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-rw-r--r--ext/psych/.gitignore1
-rw-r--r--ext/psych/depend19
-rw-r--r--ext/psych/extconf.rb93
-rw-r--r--ext/psych/extlibs11
-rw-r--r--ext/psych/lib/psych.rb13
-rw-r--r--ext/psych/lib/psych/nodes/node.rb4
-rw-r--r--ext/psych/lib/psych/scalar_scanner.rb26
-rw-r--r--ext/psych/lib/psych/versions.rb2
-rw-r--r--ext/psych/lib/psych/visitors/to_ruby.rb4
-rw-r--r--ext/psych/psych.gemspec3
-rw-r--r--ext/psych/yaml/api.c1393
-rw-r--r--ext/psych/yaml/config.h80
-rw-r--r--ext/psych/yaml/dumper.c394
-rw-r--r--ext/psych/yaml/emitter.c2358
-rw-r--r--ext/psych/yaml/loader.c544
-rw-r--r--ext/psych/yaml/parser.c1375
-rw-r--r--ext/psych/yaml/reader.c469
-rw-r--r--ext/psych/yaml/scanner.c3598
-rw-r--r--ext/psych/yaml/writer.c141
-rw-r--r--ext/psych/yaml/yaml.h1985
-rw-r--r--ext/psych/yaml/yaml_private.h688
21 files changed, 123 insertions, 13078 deletions
diff --git a/ext/psych/.gitignore b/ext/psych/.gitignore
new file mode 100644
index 0000000000..92946455b0
--- /dev/null
+++ b/ext/psych/.gitignore
@@ -0,0 +1 @@
+/yaml-[0-9]*.*.*
diff --git a/ext/psych/depend b/ext/psych/depend
index 4448663531..78bde9a53d 100644
--- a/ext/psych/depend
+++ b/ext/psych/depend
@@ -1,4 +1,16 @@
-$(OBJS): $(YAML_H)
+$(TARGET_SO): $(LIBYAML)
+
+libyaml $(LIBYAML):
+ cd libyaml && $(MAKE)
+ $(AR) $(ARFLAGS) $(LIBYAML) $(LIBYAML_OBJDIR)/*.$(OBJEXT)
+ $(RANLIB) $(LIBYAML)
+
+clean-so::
+ -cd libyaml && $(MAKE) clean
+
+distclean-so::
+ -cd libyaml && $(MAKE) distclean
+ -$(Q)$(RMDIRS) libyaml/* libyaml
# AUTOGENERATED DEPENDENCIES START
psych.o: $(RUBY_EXTCONF_H)
@@ -17,6 +29,7 @@ psych.o: $(hdrdir)/ruby/backward/2/stdarg.h
psych.o: $(hdrdir)/ruby/defines.h
psych.o: $(hdrdir)/ruby/encoding.h
psych.o: $(hdrdir)/ruby/intern.h
+psych.o: $(hdrdir)/ruby/internal/abi.h
psych.o: $(hdrdir)/ruby/internal/anyargs.h
psych.o: $(hdrdir)/ruby/internal/arithmetic.h
psych.o: $(hdrdir)/ruby/internal/arithmetic/char.h
@@ -193,6 +206,7 @@ psych_emitter.o: $(hdrdir)/ruby/backward/2/stdarg.h
psych_emitter.o: $(hdrdir)/ruby/defines.h
psych_emitter.o: $(hdrdir)/ruby/encoding.h
psych_emitter.o: $(hdrdir)/ruby/intern.h
+psych_emitter.o: $(hdrdir)/ruby/internal/abi.h
psych_emitter.o: $(hdrdir)/ruby/internal/anyargs.h
psych_emitter.o: $(hdrdir)/ruby/internal/arithmetic.h
psych_emitter.o: $(hdrdir)/ruby/internal/arithmetic/char.h
@@ -369,6 +383,7 @@ psych_parser.o: $(hdrdir)/ruby/backward/2/stdarg.h
psych_parser.o: $(hdrdir)/ruby/defines.h
psych_parser.o: $(hdrdir)/ruby/encoding.h
psych_parser.o: $(hdrdir)/ruby/intern.h
+psych_parser.o: $(hdrdir)/ruby/internal/abi.h
psych_parser.o: $(hdrdir)/ruby/internal/anyargs.h
psych_parser.o: $(hdrdir)/ruby/internal/arithmetic.h
psych_parser.o: $(hdrdir)/ruby/internal/arithmetic/char.h
@@ -545,6 +560,7 @@ psych_to_ruby.o: $(hdrdir)/ruby/backward/2/stdarg.h
psych_to_ruby.o: $(hdrdir)/ruby/defines.h
psych_to_ruby.o: $(hdrdir)/ruby/encoding.h
psych_to_ruby.o: $(hdrdir)/ruby/intern.h
+psych_to_ruby.o: $(hdrdir)/ruby/internal/abi.h
psych_to_ruby.o: $(hdrdir)/ruby/internal/anyargs.h
psych_to_ruby.o: $(hdrdir)/ruby/internal/arithmetic.h
psych_to_ruby.o: $(hdrdir)/ruby/internal/arithmetic/char.h
@@ -721,6 +737,7 @@ psych_yaml_tree.o: $(hdrdir)/ruby/backward/2/stdarg.h
psych_yaml_tree.o: $(hdrdir)/ruby/defines.h
psych_yaml_tree.o: $(hdrdir)/ruby/encoding.h
psych_yaml_tree.o: $(hdrdir)/ruby/intern.h
+psych_yaml_tree.o: $(hdrdir)/ruby/internal/abi.h
psych_yaml_tree.o: $(hdrdir)/ruby/internal/anyargs.h
psych_yaml_tree.o: $(hdrdir)/ruby/internal/arithmetic.h
psych_yaml_tree.o: $(hdrdir)/ruby/internal/arithmetic/char.h
diff --git a/ext/psych/extconf.rb b/ext/psych/extconf.rb
index 857f8e68c4..6d03870436 100644
--- a/ext/psych/extconf.rb
+++ b/ext/psych/extconf.rb
@@ -1,43 +1,78 @@
# -*- coding: us-ascii -*-
# frozen_string_literal: true
require 'mkmf'
-require 'fileutils'
-# :stopdoc:
-
-dir_config 'libyaml'
-
-if enable_config("bundled-libyaml", false) || !(find_header('yaml.h') && find_library('yaml', 'yaml_get_version'))
- # Embed libyaml since we could not find it.
-
- $VPATH << "$(srcdir)/yaml"
- $INCFLAGS << " -I$(srcdir)/yaml"
-
- $srcs = Dir.glob("#{$srcdir}/{,yaml/}*.c").map {|n| File.basename(n)}.sort
+if $mswin or $mingw or $cygwin
+ $CPPFLAGS << " -DYAML_DECLARE_STATIC"
+end
- header = 'yaml/yaml.h'
- header = "{$(VPATH)}#{header}" if $nmake
- if have_macro("_WIN32")
- $CPPFLAGS << " -DYAML_DECLARE_STATIC -DHAVE_CONFIG_H"
+yaml_source = with_config("libyaml-source-dir") || enable_config("bundled-libyaml", false)
+unless yaml_source # default to pre-installed libyaml
+ pkg_config('yaml-0.1')
+ dir_config('libyaml')
+ unless find_header('yaml.h') && find_library('yaml', 'yaml_get_version')
+ yaml_source = true # fallback to the bundled source if exists
end
+end
- have_header 'dlfcn.h'
- have_header 'inttypes.h'
- have_header 'memory.h'
- have_header 'stdint.h'
- have_header 'stdlib.h'
- have_header 'strings.h'
- have_header 'string.h'
- have_header 'sys/stat.h'
- have_header 'sys/types.h'
- have_header 'unistd.h'
+if yaml_source == true
+ # search the latest libyaml source under $srcdir
+ yaml_source = Dir.glob("#{$srcdir}/yaml{,-*}/").max_by {|n| File.basename(n).scan(/\d+/).map(&:to_i)}
+ unless yaml_source
+ download_failure = "failed to download libyaml source. Try manually installing libyaml?"
+ begin
+ require_relative '../../tool/extlibs.rb'
+ rescue LoadError
+ # When running in ruby/ruby, we use miniruby and don't have stdlib.
+ # Avoid LoadError because it aborts the whole build. Usually when
+ # stdlib extension fail to configure we skip it and continue.
+ raise download_failure
+ end
+ extlibs = ExtLibs.new(cache_dir: File.expand_path("../../tmp/download_cache", $srcdir))
+ unless extlibs.process_under($srcdir)
+ raise download_failure
+ end
+ yaml_source, = Dir.glob("#{$srcdir}/yaml-*/")
+ raise "libyaml not found" unless yaml_source
+ end
+elsif yaml_source
+ yaml_source = yaml_source.gsub(/\$\((\w+)\)|\$\{(\w+)\}/) {ENV[$1||$2]}
+end
+if yaml_source
+ yaml_source = yaml_source.chomp("/")
+ yaml_configure = "#{File.expand_path(yaml_source)}/configure"
+ unless File.exist?(yaml_configure)
+ raise "Configure script not found in #{yaml_source.quote}"
+ end
- find_header 'yaml.h'
- have_header 'config.h'
+ puts("Configuring libyaml source in #{yaml_source.quote}")
+ yaml = "libyaml"
+ Dir.mkdir(yaml) unless File.directory?(yaml)
+ shared = $enable_shared || !$static
+ args = [
+ yaml_configure,
+ "--enable-#{shared ? 'shared' : 'static'}",
+ "--host=#{RbConfig::CONFIG['host'].sub(/-unknown-/, '-')}",
+ "CC=#{RbConfig::CONFIG['CC']}",
+ *(["CFLAGS=-w"] if RbConfig::CONFIG["GCC"] == "yes"),
+ ]
+ puts(args.quote.join(' '))
+ unless system(*args, chdir: yaml)
+ raise "failed to configure libyaml"
+ end
+ inc = yaml_source.start_with?("#$srcdir/") ? "$(srcdir)#{yaml_source[$srcdir.size..-1]}" : yaml_source
+ $INCFLAGS << " -I#{yaml}/include -I#{inc}/include"
+ puts("INCFLAGS=#$INCFLAGS")
+ libyaml = "libyaml.#$LIBEXT"
+ $cleanfiles << libyaml
+ $LOCAL_LIBS.prepend("$(LIBYAML) ")
end
create_makefile 'psych' do |mk|
- mk << "YAML_H = #{header}".strip << "\n"
+ mk << "LIBYAML = #{libyaml}".strip << "\n"
+ mk << "LIBYAML_OBJDIR = libyaml/src#{shared ? '/.libs' : ''}\n"
+ mk << "OBJEXT = #$OBJEXT"
+ mk << "RANLIB = #{config_string('RANLIB') || config_string('NULLCMD')}\n"
end
# :startdoc:
diff --git a/ext/psych/extlibs b/ext/psych/extlibs
new file mode 100644
index 0000000000..108aad42af
--- /dev/null
+++ b/ext/psych/extlibs
@@ -0,0 +1,11 @@
+ver = 0.2.5
+pkg = yaml-$(ver)
+
+https://github.com/yaml/libyaml/releases/download/$(ver)/$(pkg).tar.gz \
+ rmd160:cc175ed640046722fb7790de828002633407b6b9 \
+ sha256:c642ae9b75fee120b2d96c712538bd2cf283228d2337df2cf2988e3c02678ef4 \
+ sha512:dadd7d8e0d88b5ebab005e5d521d56d541580198aa497370966b98c904586e642a1cd4f3881094eb57624f218d50db77417bbfd0ffdce50340f011e35e8c4c02 \
+ #
+
+$(pkg)/config/config.guess -> /tool/config.guess
+$(pkg)/config/config.sub -> /tool/config.sub
diff --git a/ext/psych/lib/psych.rb b/ext/psych/lib/psych.rb
index 1a95408ca0..42d79efb83 100644
--- a/ext/psych/lib/psych.rb
+++ b/ext/psych/lib/psych.rb
@@ -268,10 +268,10 @@ module Psych
# YAML documents that are supplied via user input. Instead, please use the
# load method or the safe_load method.
#
- def self.unsafe_load yaml, filename: nil, fallback: false, symbolize_names: false, freeze: false
+ def self.unsafe_load yaml, filename: nil, fallback: false, symbolize_names: false, freeze: false, strict_integer: false
result = parse(yaml, filename: filename)
return fallback unless result
- result.to_ruby(symbolize_names: symbolize_names, freeze: freeze)
+ result.to_ruby(symbolize_names: symbolize_names, freeze: freeze, strict_integer: strict_integer)
end
###
@@ -319,13 +319,13 @@ module Psych
# Psych.safe_load("---\n foo: bar") # => {"foo"=>"bar"}
# Psych.safe_load("---\n foo: bar", symbolize_names: true) # => {:foo=>"bar"}
#
- def self.safe_load yaml, permitted_classes: [], permitted_symbols: [], aliases: false, filename: nil, fallback: nil, symbolize_names: false, freeze: false
+ def self.safe_load yaml, permitted_classes: [], permitted_symbols: [], aliases: false, filename: nil, fallback: nil, symbolize_names: false, freeze: false, strict_integer: false
result = parse(yaml, filename: filename)
return fallback unless result
class_loader = ClassLoader::Restricted.new(permitted_classes.map(&:to_s),
permitted_symbols.map(&:to_s))
- scanner = ScalarScanner.new class_loader
+ scanner = ScalarScanner.new class_loader, strict_integer: strict_integer
visitor = if aliases
Visitors::ToRuby.new scanner, class_loader, symbolize_names: symbolize_names, freeze: freeze
else
@@ -365,14 +365,15 @@ module Psych
# Raises a TypeError when `yaml` parameter is NilClass. This method is
# similar to `safe_load` except that `Symbol` objects are allowed by default.
#
- def self.load yaml, permitted_classes: [Symbol], permitted_symbols: [], aliases: false, filename: nil, fallback: nil, symbolize_names: false, freeze: false
+ def self.load yaml, permitted_classes: [Symbol], permitted_symbols: [], aliases: false, filename: nil, fallback: nil, symbolize_names: false, freeze: false, strict_integer: false
safe_load yaml, permitted_classes: permitted_classes,
permitted_symbols: permitted_symbols,
aliases: aliases,
filename: filename,
fallback: fallback,
symbolize_names: symbolize_names,
- freeze: freeze
+ freeze: freeze,
+ strict_integer: strict_integer
end
###
diff --git a/ext/psych/lib/psych/nodes/node.rb b/ext/psych/lib/psych/nodes/node.rb
index 1f841625ca..f44fce5f05 100644
--- a/ext/psych/lib/psych/nodes/node.rb
+++ b/ext/psych/lib/psych/nodes/node.rb
@@ -46,8 +46,8 @@ module Psych
# Convert this node to Ruby.
#
# See also Psych::Visitors::ToRuby
- def to_ruby(symbolize_names: false, freeze: false)
- Visitors::ToRuby.create(symbolize_names: symbolize_names, freeze: freeze).accept(self)
+ def to_ruby(symbolize_names: false, freeze: false, strict_integer: false)
+ Visitors::ToRuby.create(symbolize_names: symbolize_names, freeze: freeze, strict_integer: strict_integer).accept(self)
end
alias :transform :to_ruby
diff --git a/ext/psych/lib/psych/scalar_scanner.rb b/ext/psych/lib/psych/scalar_scanner.rb
index 604cb3e399..b50667c315 100644
--- a/ext/psych/lib/psych/scalar_scanner.rb
+++ b/ext/psych/lib/psych/scalar_scanner.rb
@@ -12,24 +12,32 @@ module Psych
FLOAT = /^(?:[-+]?([0-9][0-9_,]*)?\.[0-9]*([eE][-+][0-9]+)?(?# base 10))$/x
# Taken from http://yaml.org/type/int.html
- INTEGER = /^(?:[-+]?0b[0-1_,]+ (?# base 2)
- |[-+]?0[0-7_,]+ (?# base 8)
- |[-+]?(?:0|[1-9](?:[0-9]|,[0-9]|_[0-9])*) (?# base 10)
- |[-+]?0x[0-9a-fA-F_,]+ (?# base 16))$/x
+ INTEGER_STRICT = /^(?:[-+]?0b[0-1_]+ (?# base 2)
+ |[-+]?0[0-7_]+ (?# base 8)
+ |[-+]?(0|[1-9][0-9_]*) (?# base 10)
+ |[-+]?0x[0-9a-fA-F_]+ (?# base 16))$/x
+
+ # Same as above, but allows commas.
+ # Not to YML spec, but kept for backwards compatibility
+ INTEGER_LEGACY = /^(?:[-+]?0b[0-1_,]+ (?# base 2)
+ |[-+]?0[0-7_,]+ (?# base 8)
+ |[-+]?(?:0|[1-9](?:[0-9]|,[0-9]|_[0-9])*) (?# base 10)
+ |[-+]?0x[0-9a-fA-F_,]+ (?# base 16))$/x
attr_reader :class_loader
# Create a new scanner
- def initialize class_loader
+ def initialize class_loader, strict_integer: false
@symbol_cache = {}
@class_loader = class_loader
+ @strict_integer = strict_integer
end
# Tokenize +string+ returning the Ruby object
def tokenize string
return nil if string.empty?
return @symbol_cache[string] if @symbol_cache.key?(string)
-
+ integer_regex = @strict_integer ? INTEGER_STRICT : INTEGER_LEGACY
# Check for a String type, being careful not to get caught by hash keys, hex values, and
# special floats (e.g., -.inf).
if string.match?(%r{^[^\d.:-]?[[:alpha:]_\s!@#$%\^&*(){}<>|/\\~;=]+}) || string.match?(/\n/)
@@ -87,9 +95,9 @@ module Psych
if string.match?(/\A[-+]?\.\Z/)
string
else
- Float(string.gsub(/[,_]|\.([Ee]|$)/, '\1'))
+ Float(string.delete(',_').gsub(/\.([Ee]|$)/, '\1'))
end
- elsif string.match?(INTEGER)
+ elsif string.match?(integer_regex)
parse_int string
else
string
@@ -99,7 +107,7 @@ module Psych
###
# Parse and return an int from +string+
def parse_int string
- Integer(string.gsub(/[,_]/, ''))
+ Integer(string.delete(',_'))
end
###
diff --git a/ext/psych/lib/psych/versions.rb b/ext/psych/lib/psych/versions.rb
index 3cfd59e751..0fdead154c 100644
--- a/ext/psych/lib/psych/versions.rb
+++ b/ext/psych/lib/psych/versions.rb
@@ -2,7 +2,7 @@
module Psych
# The version of Psych you are using
- VERSION = '4.0.3'
+ VERSION = '5.0.0.dev'
if RUBY_ENGINE == 'jruby'
DEFAULT_SNAKEYAML_VERSION = '1.28'.freeze
diff --git a/ext/psych/lib/psych/visitors/to_ruby.rb b/ext/psych/lib/psych/visitors/to_ruby.rb
index 4c1f561070..935bc74f21 100644
--- a/ext/psych/lib/psych/visitors/to_ruby.rb
+++ b/ext/psych/lib/psych/visitors/to_ruby.rb
@@ -12,9 +12,9 @@ module Psych
###
# This class walks a YAML AST, converting each node to Ruby
class ToRuby < Psych::Visitors::Visitor
- def self.create(symbolize_names: false, freeze: false)
+ def self.create(symbolize_names: false, freeze: false, strict_integer: false)
class_loader = ClassLoader.new
- scanner = ScalarScanner.new class_loader
+ scanner = ScalarScanner.new class_loader, strict_integer: strict_integer
new(scanner, class_loader, symbolize_names: symbolize_names, freeze: freeze)
end
diff --git a/ext/psych/psych.gemspec b/ext/psych/psych.gemspec
index 65dd7156cb..5f5168ddb0 100644
--- a/ext/psych/psych.gemspec
+++ b/ext/psych/psych.gemspec
@@ -27,9 +27,6 @@ DESCRIPTION
"bin/setup", "ext/psych/depend", "ext/psych/extconf.rb", "ext/psych/psych.c", "ext/psych/psych.h",
"ext/psych/psych_emitter.c", "ext/psych/psych_emitter.h", "ext/psych/psych_parser.c", "ext/psych/psych_parser.h",
"ext/psych/psych_to_ruby.c", "ext/psych/psych_to_ruby.h", "ext/psych/psych_yaml_tree.c", "ext/psych/psych_yaml_tree.h",
- "ext/psych/yaml/LICENSE", "ext/psych/yaml/api.c", "ext/psych/yaml/config.h", "ext/psych/yaml/dumper.c",
- "ext/psych/yaml/emitter.c", "ext/psych/yaml/loader.c", "ext/psych/yaml/parser.c", "ext/psych/yaml/reader.c",
- "ext/psych/yaml/scanner.c", "ext/psych/yaml/writer.c", "ext/psych/yaml/yaml.h", "ext/psych/yaml/yaml_private.h",
"lib/psych.rb", "lib/psych/class_loader.rb", "lib/psych/coder.rb", "lib/psych/core_ext.rb", "lib/psych/exception.rb",
"lib/psych/handler.rb", "lib/psych/handlers/document_stream.rb", "lib/psych/handlers/recorder.rb",
"lib/psych/json/ruby_events.rb", "lib/psych/json/stream.rb", "lib/psych/json/tree_builder.rb",
diff --git a/ext/psych/yaml/api.c b/ext/psych/yaml/api.c
deleted file mode 100644
index 6add8b2661..0000000000
--- a/ext/psych/yaml/api.c
+++ /dev/null
@@ -1,1393 +0,0 @@
-
-#include "yaml_private.h"
-
-/*
- * Get the library version.
- */
-
-YAML_DECLARE(const char *)
-yaml_get_version_string(void)
-{
- return YAML_VERSION_STRING;
-}
-
-/*
- * Get the library version numbers.
- */
-
-YAML_DECLARE(void)
-yaml_get_version(int *major, int *minor, int *patch)
-{
- *major = YAML_VERSION_MAJOR;
- *minor = YAML_VERSION_MINOR;
- *patch = YAML_VERSION_PATCH;
-}
-
-/*
- * Allocate a dynamic memory block.
- */
-
-YAML_DECLARE(void *)
-yaml_malloc(size_t size)
-{
- return malloc(size ? size : 1);
-}
-
-/*
- * Reallocate a dynamic memory block.
- */
-
-YAML_DECLARE(void *)
-yaml_realloc(void *ptr, size_t size)
-{
- return ptr ? realloc(ptr, size ? size : 1) : malloc(size ? size : 1);
-}
-
-/*
- * Free a dynamic memory block.
- */
-
-YAML_DECLARE(void)
-yaml_free(void *ptr)
-{
- if (ptr) free(ptr);
-}
-
-/*
- * Duplicate a string.
- */
-
-YAML_DECLARE(yaml_char_t *)
-yaml_strdup(const yaml_char_t *str)
-{
- if (!str)
- return NULL;
-
- return (yaml_char_t *)strdup((char *)str);
-}
-
-/*
- * Extend a string.
- */
-
-YAML_DECLARE(int)
-yaml_string_extend(yaml_char_t **start,
- yaml_char_t **pointer, yaml_char_t **end)
-{
- yaml_char_t *new_start = (yaml_char_t *)yaml_realloc((void*)*start, (*end - *start)*2);
-
- if (!new_start) return 0;
-
- memset(new_start + (*end - *start), 0, *end - *start);
-
- *pointer = new_start + (*pointer - *start);
- *end = new_start + (*end - *start)*2;
- *start = new_start;
-
- return 1;
-}
-
-/*
- * Append a string B to a string A.
- */
-
-YAML_DECLARE(int)
-yaml_string_join(
- yaml_char_t **a_start, yaml_char_t **a_pointer, yaml_char_t **a_end,
- yaml_char_t **b_start, yaml_char_t **b_pointer, SHIM(yaml_char_t **b_end))
-{
- UNUSED_PARAM(b_end)
- if (*b_start == *b_pointer)
- return 1;
-
- while (*a_end - *a_pointer <= *b_pointer - *b_start) {
- if (!yaml_string_extend(a_start, a_pointer, a_end))
- return 0;
- }
-
- memcpy(*a_pointer, *b_start, *b_pointer - *b_start);
- *a_pointer += *b_pointer - *b_start;
-
- return 1;
-}
-
-/*
- * Extend a stack.
- */
-
-YAML_DECLARE(int)
-yaml_stack_extend(void **start, void **top, void **end)
-{
- void *new_start;
-
- if ((char *)*end - (char *)*start >= INT_MAX / 2)
- return 0;
-
- new_start = yaml_realloc(*start, ((char *)*end - (char *)*start)*2);
-
- if (!new_start) return 0;
-
- *top = (char *)new_start + ((char *)*top - (char *)*start);
- *end = (char *)new_start + ((char *)*end - (char *)*start)*2;
- *start = new_start;
-
- return 1;
-}
-
-/*
- * Extend or move a queue.
- */
-
-YAML_DECLARE(int)
-yaml_queue_extend(void **start, void **head, void **tail, void **end)
-{
- /* Check if we need to resize the queue. */
-
- if (*start == *head && *tail == *end) {
- void *new_start = yaml_realloc(*start,
- ((char *)*end - (char *)*start)*2);
-
- if (!new_start) return 0;
-
- *head = (char *)new_start + ((char *)*head - (char *)*start);
- *tail = (char *)new_start + ((char *)*tail - (char *)*start);
- *end = (char *)new_start + ((char *)*end - (char *)*start)*2;
- *start = new_start;
- }
-
- /* Check if we need to move the queue at the beginning of the buffer. */
-
- if (*tail == *end) {
- if (*head != *tail) {
- memmove(*start, *head, (char *)*tail - (char *)*head);
- }
- *tail = (char *)*tail - (char *)*head + (char *)*start;
- *head = *start;
- }
-
- return 1;
-}
-
-
-/*
- * Create a new parser object.
- */
-
-YAML_DECLARE(int)
-yaml_parser_initialize(yaml_parser_t *parser)
-{
- assert(parser); /* Non-NULL parser object expected. */
-
- memset(parser, 0, sizeof(yaml_parser_t));
- if (!BUFFER_INIT(parser, parser->raw_buffer, INPUT_RAW_BUFFER_SIZE))
- goto error;
- if (!BUFFER_INIT(parser, parser->buffer, INPUT_BUFFER_SIZE))
- goto error;
- if (!QUEUE_INIT(parser, parser->tokens, INITIAL_QUEUE_SIZE, yaml_token_t*))
- goto error;
- if (!STACK_INIT(parser, parser->indents, int*))
- goto error;
- if (!STACK_INIT(parser, parser->simple_keys, yaml_simple_key_t*))
- goto error;
- if (!STACK_INIT(parser, parser->states, yaml_parser_state_t*))
- goto error;
- if (!STACK_INIT(parser, parser->marks, yaml_mark_t*))
- goto error;
- if (!STACK_INIT(parser, parser->tag_directives, yaml_tag_directive_t*))
- goto error;
-
- return 1;
-
-error:
-
- BUFFER_DEL(parser, parser->raw_buffer);
- BUFFER_DEL(parser, parser->buffer);
- QUEUE_DEL(parser, parser->tokens);
- STACK_DEL(parser, parser->indents);
- STACK_DEL(parser, parser->simple_keys);
- STACK_DEL(parser, parser->states);
- STACK_DEL(parser, parser->marks);
- STACK_DEL(parser, parser->tag_directives);
-
- return 0;
-}
-
-/*
- * Destroy a parser object.
- */
-
-YAML_DECLARE(void)
-yaml_parser_delete(yaml_parser_t *parser)
-{
- assert(parser); /* Non-NULL parser object expected. */
-
- BUFFER_DEL(parser, parser->raw_buffer);
- BUFFER_DEL(parser, parser->buffer);
- while (!QUEUE_EMPTY(parser, parser->tokens)) {
- yaml_token_delete(&DEQUEUE(parser, parser->tokens));
- }
- QUEUE_DEL(parser, parser->tokens);
- STACK_DEL(parser, parser->indents);
- STACK_DEL(parser, parser->simple_keys);
- STACK_DEL(parser, parser->states);
- STACK_DEL(parser, parser->marks);
- while (!STACK_EMPTY(parser, parser->tag_directives)) {
- yaml_tag_directive_t tag_directive = POP(parser, parser->tag_directives);
- yaml_free(tag_directive.handle);
- yaml_free(tag_directive.prefix);
- }
- STACK_DEL(parser, parser->tag_directives);
-
- memset(parser, 0, sizeof(yaml_parser_t));
-}
-
-/*
- * String read handler.
- */
-
-static int
-yaml_string_read_handler(void *data, unsigned char *buffer, size_t size,
- size_t *size_read)
-{
- yaml_parser_t *parser = (yaml_parser_t *)data;
-
- if (parser->input.string.current == parser->input.string.end) {
- *size_read = 0;
- return 1;
- }
-
- if (size > (size_t)(parser->input.string.end
- - parser->input.string.current)) {
- size = parser->input.string.end - parser->input.string.current;
- }
-
- memcpy(buffer, parser->input.string.current, size);
- parser->input.string.current += size;
- *size_read = size;
- return 1;
-}
-
-/*
- * File read handler.
- */
-
-static int
-yaml_file_read_handler(void *data, unsigned char *buffer, size_t size,
- size_t *size_read)
-{
- yaml_parser_t *parser = (yaml_parser_t *)data;
-
- *size_read = fread(buffer, 1, size, parser->input.file);
- return !ferror(parser->input.file);
-}
-
-/*
- * Set a string input.
- */
-
-YAML_DECLARE(void)
-yaml_parser_set_input_string(yaml_parser_t *parser,
- const unsigned char *input, size_t size)
-{
- assert(parser); /* Non-NULL parser object expected. */
- assert(!parser->read_handler); /* You can set the source only once. */
- assert(input); /* Non-NULL input string expected. */
-
- parser->read_handler = yaml_string_read_handler;
- parser->read_handler_data = parser;
-
- parser->input.string.start = input;
- parser->input.string.current = input;
- parser->input.string.end = input+size;
-}
-
-/*
- * Set a file input.
- */
-
-YAML_DECLARE(void)
-yaml_parser_set_input_file(yaml_parser_t *parser, FILE *file)
-{
- assert(parser); /* Non-NULL parser object expected. */
- assert(!parser->read_handler); /* You can set the source only once. */
- assert(file); /* Non-NULL file object expected. */
-
- parser->read_handler = yaml_file_read_handler;
- parser->read_handler_data = parser;
-
- parser->input.file = file;
-}
-
-/*
- * Set a generic input.
- */
-
-YAML_DECLARE(void)
-yaml_parser_set_input(yaml_parser_t *parser,
- yaml_read_handler_t *handler, void *data)
-{
- assert(parser); /* Non-NULL parser object expected. */
- assert(!parser->read_handler); /* You can set the source only once. */
- assert(handler); /* Non-NULL read handler expected. */
-
- parser->read_handler = handler;
- parser->read_handler_data = data;
-}
-
-/*
- * Set the source encoding.
- */
-
-YAML_DECLARE(void)
-yaml_parser_set_encoding(yaml_parser_t *parser, yaml_encoding_t encoding)
-{
- assert(parser); /* Non-NULL parser object expected. */
- assert(!parser->encoding); /* Encoding is already set or detected. */
-
- parser->encoding = encoding;
-}
-
-/*
- * Create a new emitter object.
- */
-
-YAML_DECLARE(int)
-yaml_emitter_initialize(yaml_emitter_t *emitter)
-{
- assert(emitter); /* Non-NULL emitter object expected. */
-
- memset(emitter, 0, sizeof(yaml_emitter_t));
- if (!BUFFER_INIT(emitter, emitter->buffer, OUTPUT_BUFFER_SIZE))
- goto error;
- if (!BUFFER_INIT(emitter, emitter->raw_buffer, OUTPUT_RAW_BUFFER_SIZE))
- goto error;
- if (!STACK_INIT(emitter, emitter->states, yaml_emitter_state_t*))
- goto error;
- if (!QUEUE_INIT(emitter, emitter->events, INITIAL_QUEUE_SIZE, yaml_event_t*))
- goto error;
- if (!STACK_INIT(emitter, emitter->indents, int*))
- goto error;
- if (!STACK_INIT(emitter, emitter->tag_directives, yaml_tag_directive_t*))
- goto error;
-
- return 1;
-
-error:
-
- BUFFER_DEL(emitter, emitter->buffer);
- BUFFER_DEL(emitter, emitter->raw_buffer);
- STACK_DEL(emitter, emitter->states);
- QUEUE_DEL(emitter, emitter->events);
- STACK_DEL(emitter, emitter->indents);
- STACK_DEL(emitter, emitter->tag_directives);
-
- return 0;
-}
-
-/*
- * Destroy an emitter object.
- */
-
-YAML_DECLARE(void)
-yaml_emitter_delete(yaml_emitter_t *emitter)
-{
- assert(emitter); /* Non-NULL emitter object expected. */
-
- BUFFER_DEL(emitter, emitter->buffer);
- BUFFER_DEL(emitter, emitter->raw_buffer);
- STACK_DEL(emitter, emitter->states);
- while (!QUEUE_EMPTY(emitter, emitter->events)) {
- yaml_event_delete(&DEQUEUE(emitter, emitter->events));
- }
- QUEUE_DEL(emitter, emitter->events);
- STACK_DEL(emitter, emitter->indents);
- while (!STACK_EMPTY(empty, emitter->tag_directives)) {
- yaml_tag_directive_t tag_directive = POP(emitter, emitter->tag_directives);
- yaml_free(tag_directive.handle);
- yaml_free(tag_directive.prefix);
- }
- STACK_DEL(emitter, emitter->tag_directives);
- yaml_free(emitter->anchors);
-
- memset(emitter, 0, sizeof(yaml_emitter_t));
-}
-
-/*
- * String write handler.
- */
-
-static int
-yaml_string_write_handler(void *data, unsigned char *buffer, size_t size)
-{
- yaml_emitter_t *emitter = (yaml_emitter_t *)data;
-
- if (emitter->output.string.size - *emitter->output.string.size_written
- < size) {
- memcpy(emitter->output.string.buffer
- + *emitter->output.string.size_written,
- buffer,
- emitter->output.string.size
- - *emitter->output.string.size_written);
- *emitter->output.string.size_written = emitter->output.string.size;
- return 0;
- }
-
- memcpy(emitter->output.string.buffer
- + *emitter->output.string.size_written, buffer, size);
- *emitter->output.string.size_written += size;
- return 1;
-}
-
-/*
- * File write handler.
- */
-
-static int
-yaml_file_write_handler(void *data, unsigned char *buffer, size_t size)
-{
- yaml_emitter_t *emitter = (yaml_emitter_t *)data;
-
- return (fwrite(buffer, 1, size, emitter->output.file) == size);
-}
-/*
- * Set a string output.
- */
-
-YAML_DECLARE(void)
-yaml_emitter_set_output_string(yaml_emitter_t *emitter,
- unsigned char *output, size_t size, size_t *size_written)
-{
- assert(emitter); /* Non-NULL emitter object expected. */
- assert(!emitter->write_handler); /* You can set the output only once. */
- assert(output); /* Non-NULL output string expected. */
-
- emitter->write_handler = yaml_string_write_handler;
- emitter->write_handler_data = emitter;
-
- emitter->output.string.buffer = output;
- emitter->output.string.size = size;
- emitter->output.string.size_written = size_written;
- *size_written = 0;
-}
-
-/*
- * Set a file output.
- */
-
-YAML_DECLARE(void)
-yaml_emitter_set_output_file(yaml_emitter_t *emitter, FILE *file)
-{
- assert(emitter); /* Non-NULL emitter object expected. */
- assert(!emitter->write_handler); /* You can set the output only once. */
- assert(file); /* Non-NULL file object expected. */
-
- emitter->write_handler = yaml_file_write_handler;
- emitter->write_handler_data = emitter;
-
- emitter->output.file = file;
-}
-
-/*
- * Set a generic output handler.
- */
-
-YAML_DECLARE(void)
-yaml_emitter_set_output(yaml_emitter_t *emitter,
- yaml_write_handler_t *handler, void *data)
-{
- assert(emitter); /* Non-NULL emitter object expected. */
- assert(!emitter->write_handler); /* You can set the output only once. */
- assert(handler); /* Non-NULL handler object expected. */
-
- emitter->write_handler = handler;
- emitter->write_handler_data = data;
-}
-
-/*
- * Set the output encoding.
- */
-
-YAML_DECLARE(void)
-yaml_emitter_set_encoding(yaml_emitter_t *emitter, yaml_encoding_t encoding)
-{
- assert(emitter); /* Non-NULL emitter object expected. */
- assert(!emitter->encoding); /* You can set encoding only once. */
-
- emitter->encoding = encoding;
-}
-
-/*
- * Set the canonical output style.
- */
-
-YAML_DECLARE(void)
-yaml_emitter_set_canonical(yaml_emitter_t *emitter, int canonical)
-{
- assert(emitter); /* Non-NULL emitter object expected. */
-
- emitter->canonical = (canonical != 0);
-}
-
-/*
- * Set the indentation increment.
- */
-
-YAML_DECLARE(void)
-yaml_emitter_set_indent(yaml_emitter_t *emitter, int indent)
-{
- assert(emitter); /* Non-NULL emitter object expected. */
-
- emitter->best_indent = (1 < indent && indent < 10) ? indent : 2;
-}
-
-/*
- * Set the preferred line width.
- */
-
-YAML_DECLARE(void)
-yaml_emitter_set_width(yaml_emitter_t *emitter, int width)
-{
- assert(emitter); /* Non-NULL emitter object expected. */
-
- emitter->best_width = (width >= 0) ? width : -1;
-}
-
-/*
- * Set if unescaped non-ASCII characters are allowed.
- */
-
-YAML_DECLARE(void)
-yaml_emitter_set_unicode(yaml_emitter_t *emitter, int unicode)
-{
- assert(emitter); /* Non-NULL emitter object expected. */
-
- emitter->unicode = (unicode != 0);
-}
-
-/*
- * Set the preferred line break character.
- */
-
-YAML_DECLARE(void)
-yaml_emitter_set_break(yaml_emitter_t *emitter, yaml_break_t line_break)
-{
- assert(emitter); /* Non-NULL emitter object expected. */
-
- emitter->line_break = line_break;
-}
-
-/*
- * Destroy a token object.
- */
-
-YAML_DECLARE(void)
-yaml_token_delete(yaml_token_t *token)
-{
- assert(token); /* Non-NULL token object expected. */
-
- switch (token->type)
- {
- case YAML_TAG_DIRECTIVE_TOKEN:
- yaml_free(token->data.tag_directive.handle);
- yaml_free(token->data.tag_directive.prefix);
- break;
-
- case YAML_ALIAS_TOKEN:
- yaml_free(token->data.alias.value);
- break;
-
- case YAML_ANCHOR_TOKEN:
- yaml_free(token->data.anchor.value);
- break;
-
- case YAML_TAG_TOKEN:
- yaml_free(token->data.tag.handle);
- yaml_free(token->data.tag.suffix);
- break;
-
- case YAML_SCALAR_TOKEN:
- yaml_free(token->data.scalar.value);
- break;
-
- default:
- break;
- }
-
- memset(token, 0, sizeof(yaml_token_t));
-}
-
-/*
- * Check if a string is a valid UTF-8 sequence.
- *
- * Check 'reader.c' for more details on UTF-8 encoding.
- */
-
-static int
-yaml_check_utf8(const yaml_char_t *start, size_t length)
-{
- const yaml_char_t *end = start+length;
- const yaml_char_t *pointer = start;
-
- while (pointer < end) {
- unsigned char octet;
- unsigned int width;
- unsigned int value;
- size_t k;
-
- octet = pointer[0];
- width = (octet & 0x80) == 0x00 ? 1 :
- (octet & 0xE0) == 0xC0 ? 2 :
- (octet & 0xF0) == 0xE0 ? 3 :
- (octet & 0xF8) == 0xF0 ? 4 : 0;
- value = (octet & 0x80) == 0x00 ? octet & 0x7F :
- (octet & 0xE0) == 0xC0 ? octet & 0x1F :
- (octet & 0xF0) == 0xE0 ? octet & 0x0F :
- (octet & 0xF8) == 0xF0 ? octet & 0x07 : 0;
- if (!width) return 0;
- if (pointer+width > end) return 0;
- for (k = 1; k < width; k ++) {
- octet = pointer[k];
- if ((octet & 0xC0) != 0x80) return 0;
- value = (value << 6) + (octet & 0x3F);
- }
- if (!((width == 1) ||
- (width == 2 && value >= 0x80) ||
- (width == 3 && value >= 0x800) ||
- (width == 4 && value >= 0x10000))) return 0;
-
- pointer += width;
- }
-
- return 1;
-}
-
-/*
- * Create STREAM-START.
- */
-
-YAML_DECLARE(int)
-yaml_stream_start_event_initialize(yaml_event_t *event,
- yaml_encoding_t encoding)
-{
- yaml_mark_t mark = { 0, 0, 0 };
-
- assert(event); /* Non-NULL event object is expected. */
-
- STREAM_START_EVENT_INIT(*event, encoding, mark, mark);
-
- return 1;
-}
-
-/*
- * Create STREAM-END.
- */
-
-YAML_DECLARE(int)
-yaml_stream_end_event_initialize(yaml_event_t *event)
-{
- yaml_mark_t mark = { 0, 0, 0 };
-
- assert(event); /* Non-NULL event object is expected. */
-
- STREAM_END_EVENT_INIT(*event, mark, mark);
-
- return 1;
-}
-
-/*
- * Create DOCUMENT-START.
- */
-
-YAML_DECLARE(int)
-yaml_document_start_event_initialize(yaml_event_t *event,
- yaml_version_directive_t *version_directive,
- yaml_tag_directive_t *tag_directives_start,
- yaml_tag_directive_t *tag_directives_end,
- int implicit)
-{
- struct {
- yaml_error_type_t error;
- } context;
- yaml_mark_t mark = { 0, 0, 0 };
- yaml_version_directive_t *version_directive_copy = NULL;
- struct {
- yaml_tag_directive_t *start;
- yaml_tag_directive_t *end;
- yaml_tag_directive_t *top;
- } tag_directives_copy = { NULL, NULL, NULL };
- yaml_tag_directive_t value = { NULL, NULL };
-
- assert(event); /* Non-NULL event object is expected. */
- assert((tag_directives_start && tag_directives_end) ||
- (tag_directives_start == tag_directives_end));
- /* Valid tag directives are expected. */
-
- if (version_directive) {
- version_directive_copy = YAML_MALLOC_STATIC(yaml_version_directive_t);
- if (!version_directive_copy) goto error;
- version_directive_copy->major = version_directive->major;
- version_directive_copy->minor = version_directive->minor;
- }
-
- if (tag_directives_start != tag_directives_end) {
- yaml_tag_directive_t *tag_directive;
- if (!STACK_INIT(&context, tag_directives_copy, yaml_tag_directive_t*))
- goto error;
- for (tag_directive = tag_directives_start;
- tag_directive != tag_directives_end; tag_directive ++) {
- assert(tag_directive->handle);
- assert(tag_directive->prefix);
- if (!yaml_check_utf8(tag_directive->handle,
- strlen((char *)tag_directive->handle)))
- goto error;
- if (!yaml_check_utf8(tag_directive->prefix,
- strlen((char *)tag_directive->prefix)))
- goto error;
- value.handle = yaml_strdup(tag_directive->handle);
- value.prefix = yaml_strdup(tag_directive->prefix);
- if (!value.handle || !value.prefix) goto error;
- if (!PUSH(&context, tag_directives_copy, value))
- goto error;
- value.handle = NULL;
- value.prefix = NULL;
- }
- }
-
- DOCUMENT_START_EVENT_INIT(*event, version_directive_copy,
- tag_directives_copy.start, tag_directives_copy.top,
- implicit, mark, mark);
-
- return 1;
-
-error:
- yaml_free(version_directive_copy);
- while (!STACK_EMPTY(context, tag_directives_copy)) {
- yaml_tag_directive_t value = POP(context, tag_directives_copy);
- yaml_free(value.handle);
- yaml_free(value.prefix);
- }
- STACK_DEL(context, tag_directives_copy);
- yaml_free(value.handle);
- yaml_free(value.prefix);
-
- return 0;
-}
-
-/*
- * Create DOCUMENT-END.
- */
-
-YAML_DECLARE(int)
-yaml_document_end_event_initialize(yaml_event_t *event, int implicit)
-{
- yaml_mark_t mark = { 0, 0, 0 };
-
- assert(event); /* Non-NULL emitter object is expected. */
-
- DOCUMENT_END_EVENT_INIT(*event, implicit, mark, mark);
-
- return 1;
-}
-
-/*
- * Create ALIAS.
- */
-
-YAML_DECLARE(int)
-yaml_alias_event_initialize(yaml_event_t *event, const yaml_char_t *anchor)
-{
- yaml_mark_t mark = { 0, 0, 0 };
- yaml_char_t *anchor_copy = NULL;
-
- assert(event); /* Non-NULL event object is expected. */
- assert(anchor); /* Non-NULL anchor is expected. */
-
- if (!yaml_check_utf8(anchor, strlen((char *)anchor))) return 0;
-
- anchor_copy = yaml_strdup(anchor);
- if (!anchor_copy)
- return 0;
-
- ALIAS_EVENT_INIT(*event, anchor_copy, mark, mark);
-
- return 1;
-}
-
-/*
- * Create SCALAR.
- */
-
-YAML_DECLARE(int)
-yaml_scalar_event_initialize(yaml_event_t *event,
- const yaml_char_t *anchor, const yaml_char_t *tag,
- const yaml_char_t *value, int length,
- int plain_implicit, int quoted_implicit,
- yaml_scalar_style_t style)
-{
- yaml_mark_t mark = { 0, 0, 0 };
- yaml_char_t *anchor_copy = NULL;
- yaml_char_t *tag_copy = NULL;
- yaml_char_t *value_copy = NULL;
-
- assert(event); /* Non-NULL event object is expected. */
- assert(value); /* Non-NULL anchor is expected. */
-
- if (anchor) {
- if (!yaml_check_utf8(anchor, strlen((char *)anchor))) goto error;
- anchor_copy = yaml_strdup(anchor);
- if (!anchor_copy) goto error;
- }
-
- if (tag) {
- if (!yaml_check_utf8(tag, strlen((char *)tag))) goto error;
- tag_copy = yaml_strdup(tag);
- if (!tag_copy) goto error;
- }
-
- if (length < 0) {
- length = (int)strlen((char *)value);
- }
-
- if (!yaml_check_utf8(value, length)) goto error;
- value_copy = YAML_MALLOC(length+1);
- if (!value_copy) goto error;
- memcpy(value_copy, value, length);
- value_copy[length] = '\0';
-
- SCALAR_EVENT_INIT(*event, anchor_copy, tag_copy, value_copy, length,
- plain_implicit, quoted_implicit, style, mark, mark);
-
- return 1;
-
-error:
- yaml_free(anchor_copy);
- yaml_free(tag_copy);
- yaml_free(value_copy);
-
- return 0;
-}
-
-/*
- * Create SEQUENCE-START.
- */
-
-YAML_DECLARE(int)
-yaml_sequence_start_event_initialize(yaml_event_t *event,
- const yaml_char_t *anchor, const yaml_char_t *tag, int implicit,
- yaml_sequence_style_t style)
-{
- yaml_mark_t mark = { 0, 0, 0 };
- yaml_char_t *anchor_copy = NULL;
- yaml_char_t *tag_copy = NULL;
-
- assert(event); /* Non-NULL event object is expected. */
-
- if (anchor) {
- if (!yaml_check_utf8(anchor, strlen((char *)anchor))) goto error;
- anchor_copy = yaml_strdup(anchor);
- if (!anchor_copy) goto error;
- }
-
- if (tag) {
- if (!yaml_check_utf8(tag, strlen((char *)tag))) goto error;
- tag_copy = yaml_strdup(tag);
- if (!tag_copy) goto error;
- }
-
- SEQUENCE_START_EVENT_INIT(*event, anchor_copy, tag_copy,
- implicit, style, mark, mark);
-
- return 1;
-
-error:
- yaml_free(anchor_copy);
- yaml_free(tag_copy);
-
- return 0;
-}
-
-/*
- * Create SEQUENCE-END.
- */
-
-YAML_DECLARE(int)
-yaml_sequence_end_event_initialize(yaml_event_t *event)
-{
- yaml_mark_t mark = { 0, 0, 0 };
-
- assert(event); /* Non-NULL event object is expected. */
-
- SEQUENCE_END_EVENT_INIT(*event, mark, mark);
-
- return 1;
-}
-
-/*
- * Create MAPPING-START.
- */
-
-YAML_DECLARE(int)
-yaml_mapping_start_event_initialize(yaml_event_t *event,
- const yaml_char_t *anchor, const yaml_char_t *tag, int implicit,
- yaml_mapping_style_t style)
-{
- yaml_mark_t mark = { 0, 0, 0 };
- yaml_char_t *anchor_copy = NULL;
- yaml_char_t *tag_copy = NULL;
-
- assert(event); /* Non-NULL event object is expected. */
-
- if (anchor) {
- if (!yaml_check_utf8(anchor, strlen((char *)anchor))) goto error;
- anchor_copy = yaml_strdup(anchor);
- if (!anchor_copy) goto error;
- }
-
- if (tag) {
- if (!yaml_check_utf8(tag, strlen((char *)tag))) goto error;
- tag_copy = yaml_strdup(tag);
- if (!tag_copy) goto error;
- }
-
- MAPPING_START_EVENT_INIT(*event, anchor_copy, tag_copy,
- implicit, style, mark, mark);
-
- return 1;
-
-error:
- yaml_free(anchor_copy);
- yaml_free(tag_copy);
-
- return 0;
-}
-
-/*
- * Create MAPPING-END.
- */
-
-YAML_DECLARE(int)
-yaml_mapping_end_event_initialize(yaml_event_t *event)
-{
- yaml_mark_t mark = { 0, 0, 0 };
-
- assert(event); /* Non-NULL event object is expected. */
-
- MAPPING_END_EVENT_INIT(*event, mark, mark);
-
- return 1;
-}
-
-/*
- * Destroy an event object.
- */
-
-YAML_DECLARE(void)
-yaml_event_delete(yaml_event_t *event)
-{
- yaml_tag_directive_t *tag_directive;
-
- assert(event); /* Non-NULL event object expected. */
-
- switch (event->type)
- {
- case YAML_DOCUMENT_START_EVENT:
- yaml_free(event->data.document_start.version_directive);
- for (tag_directive = event->data.document_start.tag_directives.start;
- tag_directive != event->data.document_start.tag_directives.end;
- tag_directive++) {
- yaml_free(tag_directive->handle);
- yaml_free(tag_directive->prefix);
- }
- yaml_free(event->data.document_start.tag_directives.start);
- break;
-
- case YAML_ALIAS_EVENT:
- yaml_free(event->data.alias.anchor);
- break;
-
- case YAML_SCALAR_EVENT:
- yaml_free(event->data.scalar.anchor);
- yaml_free(event->data.scalar.tag);
- yaml_free(event->data.scalar.value);
- break;
-
- case YAML_SEQUENCE_START_EVENT:
- yaml_free(event->data.sequence_start.anchor);
- yaml_free(event->data.sequence_start.tag);
- break;
-
- case YAML_MAPPING_START_EVENT:
- yaml_free(event->data.mapping_start.anchor);
- yaml_free(event->data.mapping_start.tag);
- break;
-
- default:
- break;
- }
-
- memset(event, 0, sizeof(yaml_event_t));
-}
-
-/*
- * Create a document object.
- */
-
-YAML_DECLARE(int)
-yaml_document_initialize(yaml_document_t *document,
- yaml_version_directive_t *version_directive,
- yaml_tag_directive_t *tag_directives_start,
- yaml_tag_directive_t *tag_directives_end,
- int start_implicit, int end_implicit)
-{
- struct {
- yaml_error_type_t error;
- } context;
- struct {
- yaml_node_t *start;
- yaml_node_t *end;
- yaml_node_t *top;
- } nodes = { NULL, NULL, NULL };
- yaml_version_directive_t *version_directive_copy = NULL;
- struct {
- yaml_tag_directive_t *start;
- yaml_tag_directive_t *end;
- yaml_tag_directive_t *top;
- } tag_directives_copy = { NULL, NULL, NULL };
- yaml_tag_directive_t value = { NULL, NULL };
- yaml_mark_t mark = { 0, 0, 0 };
-
- assert(document); /* Non-NULL document object is expected. */
- assert((tag_directives_start && tag_directives_end) ||
- (tag_directives_start == tag_directives_end));
- /* Valid tag directives are expected. */
-
- if (!STACK_INIT(&context, nodes, yaml_node_t*)) goto error;
-
- if (version_directive) {
- version_directive_copy = YAML_MALLOC_STATIC(yaml_version_directive_t);
- if (!version_directive_copy) goto error;
- version_directive_copy->major = version_directive->major;
- version_directive_copy->minor = version_directive->minor;
- }
-
- if (tag_directives_start != tag_directives_end) {
- yaml_tag_directive_t *tag_directive;
- if (!STACK_INIT(&context, tag_directives_copy, yaml_tag_directive_t*))
- goto error;
- for (tag_directive = tag_directives_start;
- tag_directive != tag_directives_end; tag_directive ++) {
- assert(tag_directive->handle);
- assert(tag_directive->prefix);
- if (!yaml_check_utf8(tag_directive->handle,
- strlen((char *)tag_directive->handle)))
- goto error;
- if (!yaml_check_utf8(tag_directive->prefix,
- strlen((char *)tag_directive->prefix)))
- goto error;
- value.handle = yaml_strdup(tag_directive->handle);
- value.prefix = yaml_strdup(tag_directive->prefix);
- if (!value.handle || !value.prefix) goto error;
- if (!PUSH(&context, tag_directives_copy, value))
- goto error;
- value.handle = NULL;
- value.prefix = NULL;
- }
- }
-
- DOCUMENT_INIT(*document, nodes.start, nodes.end, version_directive_copy,
- tag_directives_copy.start, tag_directives_copy.top,
- start_implicit, end_implicit, mark, mark);
-
- return 1;
-
-error:
- STACK_DEL(&context, nodes);
- yaml_free(version_directive_copy);
- while (!STACK_EMPTY(&context, tag_directives_copy)) {
- yaml_tag_directive_t value = POP(&context, tag_directives_copy);
- yaml_free(value.handle);
- yaml_free(value.prefix);
- }
- STACK_DEL(&context, tag_directives_copy);
- yaml_free(value.handle);
- yaml_free(value.prefix);
-
- return 0;
-}
-
-/*
- * Destroy a document object.
- */
-
-YAML_DECLARE(void)
-yaml_document_delete(yaml_document_t *document)
-{
- yaml_tag_directive_t *tag_directive;
-
- assert(document); /* Non-NULL document object is expected. */
-
- while (!STACK_EMPTY(&context, document->nodes)) {
- yaml_node_t node = POP(&context, document->nodes);
- yaml_free(node.tag);
- switch (node.type) {
- case YAML_SCALAR_NODE:
- yaml_free(node.data.scalar.value);
- break;
- case YAML_SEQUENCE_NODE:
- STACK_DEL(&context, node.data.sequence.items);
- break;
- case YAML_MAPPING_NODE:
- STACK_DEL(&context, node.data.mapping.pairs);
- break;
- default:
- assert(0); /* Should not happen. */
- }
- }
- STACK_DEL(&context, document->nodes);
-
- yaml_free(document->version_directive);
- for (tag_directive = document->tag_directives.start;
- tag_directive != document->tag_directives.end;
- tag_directive++) {
- yaml_free(tag_directive->handle);
- yaml_free(tag_directive->prefix);
- }
- yaml_free(document->tag_directives.start);
-
- memset(document, 0, sizeof(yaml_document_t));
-}
-
-/**
- * Get a document node.
- */
-
-YAML_DECLARE(yaml_node_t *)
-yaml_document_get_node(yaml_document_t *document, int index)
-{
- assert(document); /* Non-NULL document object is expected. */
-
- if (index > 0 && document->nodes.start + index <= document->nodes.top) {
- return document->nodes.start + index - 1;
- }
- return NULL;
-}
-
-/**
- * Get the root object.
- */
-
-YAML_DECLARE(yaml_node_t *)
-yaml_document_get_root_node(yaml_document_t *document)
-{
- assert(document); /* Non-NULL document object is expected. */
-
- if (document->nodes.top != document->nodes.start) {
- return document->nodes.start;
- }
- return NULL;
-}
-
-/*
- * Add a scalar node to a document.
- */
-
-YAML_DECLARE(int)
-yaml_document_add_scalar(yaml_document_t *document,
- const yaml_char_t *tag, const yaml_char_t *value, int length,
- yaml_scalar_style_t style)
-{
- struct {
- yaml_error_type_t error;
- } context;
- yaml_mark_t mark = { 0, 0, 0 };
- yaml_char_t *tag_copy = NULL;
- yaml_char_t *value_copy = NULL;
- yaml_node_t node;
-
- assert(document); /* Non-NULL document object is expected. */
- assert(value); /* Non-NULL value is expected. */
-
- if (!tag) {
- tag = (yaml_char_t *)YAML_DEFAULT_SCALAR_TAG;
- }
-
- if (!yaml_check_utf8(tag, strlen((char *)tag))) goto error;
- tag_copy = yaml_strdup(tag);
- if (!tag_copy) goto error;
-
- if (length < 0) {
- length = (int)strlen((char *)value);
- }
-
- if (!yaml_check_utf8(value, length)) goto error;
- value_copy = YAML_MALLOC(length+1);
- if (!value_copy) goto error;
- memcpy(value_copy, value, length);
- value_copy[length] = '\0';
-
- SCALAR_NODE_INIT(node, tag_copy, value_copy, length, style, mark, mark);
- if (!PUSH(&context, document->nodes, node)) goto error;
-
- return (int)(document->nodes.top - document->nodes.start);
-
-error:
- yaml_free(tag_copy);
- yaml_free(value_copy);
-
- return 0;
-}
-
-/*
- * Add a sequence node to a document.
- */
-
-YAML_DECLARE(int)
-yaml_document_add_sequence(yaml_document_t *document,
- const yaml_char_t *tag, yaml_sequence_style_t style)
-{
- struct {
- yaml_error_type_t error;
- } context;
- yaml_mark_t mark = { 0, 0, 0 };
- yaml_char_t *tag_copy = NULL;
- struct {
- yaml_node_item_t *start;
- yaml_node_item_t *end;
- yaml_node_item_t *top;
- } items = { NULL, NULL, NULL };
- yaml_node_t node;
-
- assert(document); /* Non-NULL document object is expected. */
-
- if (!tag) {
- tag = (yaml_char_t *)YAML_DEFAULT_SEQUENCE_TAG;
- }
-
- if (!yaml_check_utf8(tag, strlen((char *)tag))) goto error;
- tag_copy = yaml_strdup(tag);
- if (!tag_copy) goto error;
-
- if (!STACK_INIT(&context, items, yaml_node_item_t*)) goto error;
-
- SEQUENCE_NODE_INIT(node, tag_copy, items.start, items.end,
- style, mark, mark);
- if (!PUSH(&context, document->nodes, node)) goto error;
-
- return (int)(document->nodes.top - document->nodes.start);
-
-error:
- STACK_DEL(&context, items);
- yaml_free(tag_copy);
-
- return 0;
-}
-
-/*
- * Add a mapping node to a document.
- */
-
-YAML_DECLARE(int)
-yaml_document_add_mapping(yaml_document_t *document,
- const yaml_char_t *tag, yaml_mapping_style_t style)
-{
- struct {
- yaml_error_type_t error;
- } context;
- yaml_mark_t mark = { 0, 0, 0 };
- yaml_char_t *tag_copy = NULL;
- struct {
- yaml_node_pair_t *start;
- yaml_node_pair_t *end;
- yaml_node_pair_t *top;
- } pairs = { NULL, NULL, NULL };
- yaml_node_t node;
-
- assert(document); /* Non-NULL document object is expected. */
-
- if (!tag) {
- tag = (yaml_char_t *)YAML_DEFAULT_MAPPING_TAG;
- }
-
- if (!yaml_check_utf8(tag, strlen((char *)tag))) goto error;
- tag_copy = yaml_strdup(tag);
- if (!tag_copy) goto error;
-
- if (!STACK_INIT(&context, pairs, yaml_node_pair_t*)) goto error;
-
- MAPPING_NODE_INIT(node, tag_copy, pairs.start, pairs.end,
- style, mark, mark);
- if (!PUSH(&context, document->nodes, node)) goto error;
-
- return (int)(document->nodes.top - document->nodes.start);
-
-error:
- STACK_DEL(&context, pairs);
- yaml_free(tag_copy);
-
- return 0;
-}
-
-/*
- * Append an item to a sequence node.
- */
-
-YAML_DECLARE(int)
-yaml_document_append_sequence_item(yaml_document_t *document,
- int sequence, int item)
-{
- struct {
- yaml_error_type_t error;
- } context;
-
- assert(document); /* Non-NULL document is required. */
- assert(sequence > 0
- && document->nodes.start + sequence <= document->nodes.top);
- /* Valid sequence id is required. */
- assert(document->nodes.start[sequence-1].type == YAML_SEQUENCE_NODE);
- /* A sequence node is required. */
- assert(item > 0 && document->nodes.start + item <= document->nodes.top);
- /* Valid item id is required. */
-
- if (!PUSH(&context,
- document->nodes.start[sequence-1].data.sequence.items, item))
- return 0;
-
- return 1;
-}
-
-/*
- * Append a pair of a key and a value to a mapping node.
- */
-
-YAML_DECLARE(int)
-yaml_document_append_mapping_pair(yaml_document_t *document,
- int mapping, int key, int value)
-{
- struct {
- yaml_error_type_t error;
- } context;
-
- yaml_node_pair_t pair;
-
- assert(document); /* Non-NULL document is required. */
- assert(mapping > 0
- && document->nodes.start + mapping <= document->nodes.top);
- /* Valid mapping id is required. */
- assert(document->nodes.start[mapping-1].type == YAML_MAPPING_NODE);
- /* A mapping node is required. */
- assert(key > 0 && document->nodes.start + key <= document->nodes.top);
- /* Valid key id is required. */
- assert(value > 0 && document->nodes.start + value <= document->nodes.top);
- /* Valid value id is required. */
-
- pair.key = key;
- pair.value = value;
-
- if (!PUSH(&context,
- document->nodes.start[mapping-1].data.mapping.pairs, pair))
- return 0;
-
- return 1;
-}
-
-
diff --git a/ext/psych/yaml/config.h b/ext/psych/yaml/config.h
deleted file mode 100644
index 4b1150f5e4..0000000000
--- a/ext/psych/yaml/config.h
+++ /dev/null
@@ -1,80 +0,0 @@
-/* include/config.h. Generated from config.h.in by configure. */
-/* include/config.h.in. Generated from configure.ac by autoheader. */
-
-/* Define to 1 if you have the <dlfcn.h> header file. */
-#define HAVE_DLFCN_H 1
-
-/* Define to 1 if you have the <inttypes.h> header file. */
-#define HAVE_INTTYPES_H 1
-
-/* Define to 1 if you have the <memory.h> header file. */
-#define HAVE_MEMORY_H 1
-
-/* Define to 1 if you have the <stdint.h> header file. */
-#define HAVE_STDINT_H 1
-
-/* Define to 1 if you have the <stdlib.h> header file. */
-#define HAVE_STDLIB_H 1
-
-/* Define to 1 if you have the <strings.h> header file. */
-#define HAVE_STRINGS_H 1
-
-/* Define to 1 if you have the <string.h> header file. */
-#define HAVE_STRING_H 1
-
-/* Define to 1 if you have the <sys/stat.h> header file. */
-#define HAVE_SYS_STAT_H 1
-
-/* Define to 1 if you have the <sys/types.h> header file. */
-#define HAVE_SYS_TYPES_H 1
-
-/* Define to 1 if you have the <unistd.h> header file. */
-#define HAVE_UNISTD_H 1
-
-/* Define to the sub-directory where libtool stores uninstalled libraries. */
-#define LT_OBJDIR ".libs/"
-
-/* Name of package */
-#define PACKAGE "yaml"
-
-/* Define to the address where bug reports for this package should be sent. */
-#define PACKAGE_BUGREPORT "https://github.com/yaml/libyaml/issues/new"
-
-/* Define to the full name of this package. */
-#define PACKAGE_NAME "yaml"
-
-/* Define to the full name and version of this package. */
-#define PACKAGE_STRING "yaml 0.2.5"
-
-/* Define to the one symbol short name of this package. */
-#define PACKAGE_TARNAME "yaml"
-
-/* Define to the home page for this package. */
-#define PACKAGE_URL ""
-
-/* Define to the version of this package. */
-#define PACKAGE_VERSION "0.2.5"
-
-/* Define to 1 if you have the ANSI C header files. */
-#define STDC_HEADERS 1
-
-/* Version number of package */
-#define VERSION "0.2.5"
-
-/* Define the major version number. */
-#define YAML_VERSION_MAJOR 0
-
-/* Define the minor version number. */
-#define YAML_VERSION_MINOR 2
-
-/* Define the patch version number. */
-#define YAML_VERSION_PATCH 5
-
-/* Define the version string. */
-#define YAML_VERSION_STRING "0.2.5"
-
-/* Define to empty if `const' does not conform to ANSI C. */
-/* #undef const */
-
-/* Define to `unsigned int' if <sys/types.h> does not define. */
-/* #undef size_t */
diff --git a/ext/psych/yaml/dumper.c b/ext/psych/yaml/dumper.c
deleted file mode 100644
index 1fe940b674..0000000000
--- a/ext/psych/yaml/dumper.c
+++ /dev/null
@@ -1,394 +0,0 @@
-
-#include "yaml_private.h"
-
-/*
- * API functions.
- */
-
-YAML_DECLARE(int)
-yaml_emitter_open(yaml_emitter_t *emitter);
-
-YAML_DECLARE(int)
-yaml_emitter_close(yaml_emitter_t *emitter);
-
-YAML_DECLARE(int)
-yaml_emitter_dump(yaml_emitter_t *emitter, yaml_document_t *document);
-
-/*
- * Clean up functions.
- */
-
-static void
-yaml_emitter_delete_document_and_anchors(yaml_emitter_t *emitter);
-
-/*
- * Anchor functions.
- */
-
-static void
-yaml_emitter_anchor_node(yaml_emitter_t *emitter, int index);
-
-static yaml_char_t *
-yaml_emitter_generate_anchor(yaml_emitter_t *emitter, int anchor_id);
-
-
-/*
- * Serialize functions.
- */
-
-static int
-yaml_emitter_dump_node(yaml_emitter_t *emitter, int index);
-
-static int
-yaml_emitter_dump_alias(yaml_emitter_t *emitter, yaml_char_t *anchor);
-
-static int
-yaml_emitter_dump_scalar(yaml_emitter_t *emitter, yaml_node_t *node,
- yaml_char_t *anchor);
-
-static int
-yaml_emitter_dump_sequence(yaml_emitter_t *emitter, yaml_node_t *node,
- yaml_char_t *anchor);
-
-static int
-yaml_emitter_dump_mapping(yaml_emitter_t *emitter, yaml_node_t *node,
- yaml_char_t *anchor);
-
-/*
- * Issue a STREAM-START event.
- */
-
-YAML_DECLARE(int)
-yaml_emitter_open(yaml_emitter_t *emitter)
-{
- yaml_event_t event;
- yaml_mark_t mark = { 0, 0, 0 };
-
- assert(emitter); /* Non-NULL emitter object is required. */
- assert(!emitter->opened); /* Emitter should not be opened yet. */
-
- STREAM_START_EVENT_INIT(event, YAML_ANY_ENCODING, mark, mark);
-
- if (!yaml_emitter_emit(emitter, &event)) {
- return 0;
- }
-
- emitter->opened = 1;
-
- return 1;
-}
-
-/*
- * Issue a STREAM-END event.
- */
-
-YAML_DECLARE(int)
-yaml_emitter_close(yaml_emitter_t *emitter)
-{
- yaml_event_t event;
- yaml_mark_t mark = { 0, 0, 0 };
-
- assert(emitter); /* Non-NULL emitter object is required. */
- assert(emitter->opened); /* Emitter should be opened. */
-
- if (emitter->closed) return 1;
-
- STREAM_END_EVENT_INIT(event, mark, mark);
-
- if (!yaml_emitter_emit(emitter, &event)) {
- return 0;
- }
-
- emitter->closed = 1;
-
- return 1;
-}
-
-/*
- * Dump a YAML document.
- */
-
-YAML_DECLARE(int)
-yaml_emitter_dump(yaml_emitter_t *emitter, yaml_document_t *document)
-{
- yaml_event_t event;
- yaml_mark_t mark = { 0, 0, 0 };
-
- assert(emitter); /* Non-NULL emitter object is required. */
- assert(document); /* Non-NULL emitter object is expected. */
-
- emitter->document = document;
-
- if (!emitter->opened) {
- if (!yaml_emitter_open(emitter)) goto error;
- }
-
- if (STACK_EMPTY(emitter, document->nodes)) {
- if (!yaml_emitter_close(emitter)) goto error;
- yaml_emitter_delete_document_and_anchors(emitter);
- return 1;
- }
-
- assert(emitter->opened); /* Emitter should be opened. */
-
- emitter->anchors = (yaml_anchors_t*)yaml_malloc(sizeof(*(emitter->anchors))
- * (document->nodes.top - document->nodes.start));
- if (!emitter->anchors) goto error;
- memset(emitter->anchors, 0, sizeof(*(emitter->anchors))
- * (document->nodes.top - document->nodes.start));
-
- DOCUMENT_START_EVENT_INIT(event, document->version_directive,
- document->tag_directives.start, document->tag_directives.end,
- document->start_implicit, mark, mark);
- if (!yaml_emitter_emit(emitter, &event)) goto error;
-
- yaml_emitter_anchor_node(emitter, 1);
- if (!yaml_emitter_dump_node(emitter, 1)) goto error;
-
- DOCUMENT_END_EVENT_INIT(event, document->end_implicit, mark, mark);
- if (!yaml_emitter_emit(emitter, &event)) goto error;
-
- yaml_emitter_delete_document_and_anchors(emitter);
-
- return 1;
-
-error:
-
- yaml_emitter_delete_document_and_anchors(emitter);
-
- return 0;
-}
-
-/*
- * Clean up the emitter object after a document is dumped.
- */
-
-static void
-yaml_emitter_delete_document_and_anchors(yaml_emitter_t *emitter)
-{
- int index;
-
- if (!emitter->anchors) {
- yaml_document_delete(emitter->document);
- emitter->document = NULL;
- return;
- }
-
- for (index = 0; emitter->document->nodes.start + index
- < emitter->document->nodes.top; index ++) {
- yaml_node_t node = emitter->document->nodes.start[index];
- if (!emitter->anchors[index].serialized) {
- yaml_free(node.tag);
- if (node.type == YAML_SCALAR_NODE) {
- yaml_free(node.data.scalar.value);
- }
- }
- if (node.type == YAML_SEQUENCE_NODE) {
- STACK_DEL(emitter, node.data.sequence.items);
- }
- if (node.type == YAML_MAPPING_NODE) {
- STACK_DEL(emitter, node.data.mapping.pairs);
- }
- }
-
- STACK_DEL(emitter, emitter->document->nodes);
- yaml_free(emitter->anchors);
-
- emitter->anchors = NULL;
- emitter->last_anchor_id = 0;
- emitter->document = NULL;
-}
-
-/*
- * Check the references of a node and assign the anchor id if needed.
- */
-
-static void
-yaml_emitter_anchor_node(yaml_emitter_t *emitter, int index)
-{
- yaml_node_t *node = emitter->document->nodes.start + index - 1;
- yaml_node_item_t *item;
- yaml_node_pair_t *pair;
-
- emitter->anchors[index-1].references ++;
-
- if (emitter->anchors[index-1].references == 1) {
- switch (node->type) {
- case YAML_SEQUENCE_NODE:
- for (item = node->data.sequence.items.start;
- item < node->data.sequence.items.top; item ++) {
- yaml_emitter_anchor_node(emitter, *item);
- }
- break;
- case YAML_MAPPING_NODE:
- for (pair = node->data.mapping.pairs.start;
- pair < node->data.mapping.pairs.top; pair ++) {
- yaml_emitter_anchor_node(emitter, pair->key);
- yaml_emitter_anchor_node(emitter, pair->value);
- }
- break;
- default:
- break;
- }
- }
-
- else if (emitter->anchors[index-1].references == 2) {
- emitter->anchors[index-1].anchor = (++ emitter->last_anchor_id);
- }
-}
-
-/*
- * Generate a textual representation for an anchor.
- */
-
-#define ANCHOR_TEMPLATE "id%03d"
-#define ANCHOR_TEMPLATE_LENGTH 16
-
-static yaml_char_t *
-yaml_emitter_generate_anchor(SHIM(yaml_emitter_t *emitter), int anchor_id)
-{
- yaml_char_t *anchor = YAML_MALLOC(ANCHOR_TEMPLATE_LENGTH);
-
- if (!anchor) return NULL;
-
- sprintf((char *)anchor, ANCHOR_TEMPLATE, anchor_id);
-
- return anchor;
-}
-
-/*
- * Serialize a node.
- */
-
-static int
-yaml_emitter_dump_node(yaml_emitter_t *emitter, int index)
-{
- yaml_node_t *node = emitter->document->nodes.start + index - 1;
- int anchor_id = emitter->anchors[index-1].anchor;
- yaml_char_t *anchor = NULL;
-
- if (anchor_id) {
- anchor = yaml_emitter_generate_anchor(emitter, anchor_id);
- if (!anchor) return 0;
- }
-
- if (emitter->anchors[index-1].serialized) {
- return yaml_emitter_dump_alias(emitter, anchor);
- }
-
- emitter->anchors[index-1].serialized = 1;
-
- switch (node->type) {
- case YAML_SCALAR_NODE:
- return yaml_emitter_dump_scalar(emitter, node, anchor);
- case YAML_SEQUENCE_NODE:
- return yaml_emitter_dump_sequence(emitter, node, anchor);
- case YAML_MAPPING_NODE:
- return yaml_emitter_dump_mapping(emitter, node, anchor);
- default:
- assert(0); /* Could not happen. */
- break;
- }
-
- return 0; /* Could not happen. */
-}
-
-/*
- * Serialize an alias.
- */
-
-static int
-yaml_emitter_dump_alias(yaml_emitter_t *emitter, yaml_char_t *anchor)
-{
- yaml_event_t event;
- yaml_mark_t mark = { 0, 0, 0 };
-
- ALIAS_EVENT_INIT(event, anchor, mark, mark);
-
- return yaml_emitter_emit(emitter, &event);
-}
-
-/*
- * Serialize a scalar.
- */
-
-static int
-yaml_emitter_dump_scalar(yaml_emitter_t *emitter, yaml_node_t *node,
- yaml_char_t *anchor)
-{
- yaml_event_t event;
- yaml_mark_t mark = { 0, 0, 0 };
-
- int plain_implicit = (strcmp((char *)node->tag,
- YAML_DEFAULT_SCALAR_TAG) == 0);
- int quoted_implicit = (strcmp((char *)node->tag,
- YAML_DEFAULT_SCALAR_TAG) == 0);
-
- SCALAR_EVENT_INIT(event, anchor, node->tag, node->data.scalar.value,
- node->data.scalar.length, plain_implicit, quoted_implicit,
- node->data.scalar.style, mark, mark);
-
- return yaml_emitter_emit(emitter, &event);
-}
-
-/*
- * Serialize a sequence.
- */
-
-static int
-yaml_emitter_dump_sequence(yaml_emitter_t *emitter, yaml_node_t *node,
- yaml_char_t *anchor)
-{
- yaml_event_t event;
- yaml_mark_t mark = { 0, 0, 0 };
-
- int implicit = (strcmp((char *)node->tag, YAML_DEFAULT_SEQUENCE_TAG) == 0);
-
- yaml_node_item_t *item;
-
- SEQUENCE_START_EVENT_INIT(event, anchor, node->tag, implicit,
- node->data.sequence.style, mark, mark);
- if (!yaml_emitter_emit(emitter, &event)) return 0;
-
- for (item = node->data.sequence.items.start;
- item < node->data.sequence.items.top; item ++) {
- if (!yaml_emitter_dump_node(emitter, *item)) return 0;
- }
-
- SEQUENCE_END_EVENT_INIT(event, mark, mark);
- if (!yaml_emitter_emit(emitter, &event)) return 0;
-
- return 1;
-}
-
-/*
- * Serialize a mapping.
- */
-
-static int
-yaml_emitter_dump_mapping(yaml_emitter_t *emitter, yaml_node_t *node,
- yaml_char_t *anchor)
-{
- yaml_event_t event;
- yaml_mark_t mark = { 0, 0, 0 };
-
- int implicit = (strcmp((char *)node->tag, YAML_DEFAULT_MAPPING_TAG) == 0);
-
- yaml_node_pair_t *pair;
-
- MAPPING_START_EVENT_INIT(event, anchor, node->tag, implicit,
- node->data.mapping.style, mark, mark);
- if (!yaml_emitter_emit(emitter, &event)) return 0;
-
- for (pair = node->data.mapping.pairs.start;
- pair < node->data.mapping.pairs.top; pair ++) {
- if (!yaml_emitter_dump_node(emitter, pair->key)) return 0;
- if (!yaml_emitter_dump_node(emitter, pair->value)) return 0;
- }
-
- MAPPING_END_EVENT_INIT(event, mark, mark);
- if (!yaml_emitter_emit(emitter, &event)) return 0;
-
- return 1;
-}
-
diff --git a/ext/psych/yaml/emitter.c b/ext/psych/yaml/emitter.c
deleted file mode 100644
index 796294ccdf..0000000000
--- a/ext/psych/yaml/emitter.c
+++ /dev/null
@@ -1,2358 +0,0 @@
-
-#include "yaml_private.h"
-
-/*
- * Flush the buffer if needed.
- */
-
-#define FLUSH(emitter) \
- ((emitter->buffer.pointer+5 < emitter->buffer.end) \
- || yaml_emitter_flush(emitter))
-
-/*
- * Put a character to the output buffer.
- */
-
-#define PUT(emitter,value) \
- (FLUSH(emitter) \
- && (*(emitter->buffer.pointer++) = (yaml_char_t)(value), \
- emitter->column++, \
- 1))
-
-/*
- * Put a line break to the output buffer.
- */
-
-#define PUT_BREAK(emitter) \
- (FLUSH(emitter) ? \
- ((emitter->line_break == YAML_CR_BREAK ? \
- (*(emitter->buffer.pointer++) = (yaml_char_t) '\r') : \
- emitter->line_break == YAML_LN_BREAK ? \
- (*(emitter->buffer.pointer++) = (yaml_char_t) '\n') : \
- emitter->line_break == YAML_CRLN_BREAK ? \
- (*(emitter->buffer.pointer++) = (yaml_char_t) '\r', \
- *(emitter->buffer.pointer++) = (yaml_char_t) '\n') : 0), \
- emitter->column = 0, \
- emitter->line ++, \
- 1) : 0)
-
-/*
- * Copy a character from a string into buffer.
- */
-
-#define WRITE(emitter,string) \
- (FLUSH(emitter) \
- && (COPY(emitter->buffer,string), \
- emitter->column ++, \
- 1))
-
-/*
- * Copy a line break character from a string into buffer.
- */
-
-#define WRITE_BREAK(emitter,string) \
- (FLUSH(emitter) \
- && (CHECK(string,'\n') ? \
- (PUT_BREAK(emitter), \
- string.pointer ++, \
- 1) : \
- (COPY(emitter->buffer,string), \
- emitter->column = 0, \
- emitter->line ++, \
- 1)))
-
-/*
- * API functions.
- */
-
-YAML_DECLARE(int)
-yaml_emitter_emit(yaml_emitter_t *emitter, yaml_event_t *event);
-
-/*
- * Utility functions.
- */
-
-static int
-yaml_emitter_set_emitter_error(yaml_emitter_t *emitter, const char *problem);
-
-static int
-yaml_emitter_need_more_events(yaml_emitter_t *emitter);
-
-static int
-yaml_emitter_append_tag_directive(yaml_emitter_t *emitter,
- yaml_tag_directive_t value, int allow_duplicates);
-
-static int
-yaml_emitter_increase_indent(yaml_emitter_t *emitter,
- int flow, int indentless);
-
-/*
- * State functions.
- */
-
-static int
-yaml_emitter_state_machine(yaml_emitter_t *emitter, yaml_event_t *event);
-
-static int
-yaml_emitter_emit_stream_start(yaml_emitter_t *emitter,
- yaml_event_t *event);
-
-static int
-yaml_emitter_emit_document_start(yaml_emitter_t *emitter,
- yaml_event_t *event, int first);
-
-static int
-yaml_emitter_emit_document_content(yaml_emitter_t *emitter,
- yaml_event_t *event);
-
-static int
-yaml_emitter_emit_document_end(yaml_emitter_t *emitter,
- yaml_event_t *event);
-
-static int
-yaml_emitter_emit_flow_sequence_item(yaml_emitter_t *emitter,
- yaml_event_t *event, int first);
-
-static int
-yaml_emitter_emit_flow_mapping_key(yaml_emitter_t *emitter,
- yaml_event_t *event, int first);
-
-static int
-yaml_emitter_emit_flow_mapping_value(yaml_emitter_t *emitter,
- yaml_event_t *event, int simple);
-
-static int
-yaml_emitter_emit_block_sequence_item(yaml_emitter_t *emitter,
- yaml_event_t *event, int first);
-
-static int
-yaml_emitter_emit_block_mapping_key(yaml_emitter_t *emitter,
- yaml_event_t *event, int first);
-
-static int
-yaml_emitter_emit_block_mapping_value(yaml_emitter_t *emitter,
- yaml_event_t *event, int simple);
-
-static int
-yaml_emitter_emit_node(yaml_emitter_t *emitter, yaml_event_t *event,
- int root, int sequence, int mapping, int simple_key);
-
-static int
-yaml_emitter_emit_alias(yaml_emitter_t *emitter, yaml_event_t *event);
-
-static int
-yaml_emitter_emit_scalar(yaml_emitter_t *emitter, yaml_event_t *event);
-
-static int
-yaml_emitter_emit_sequence_start(yaml_emitter_t *emitter, yaml_event_t *event);
-
-static int
-yaml_emitter_emit_mapping_start(yaml_emitter_t *emitter, yaml_event_t *event);
-
-/*
- * Checkers.
- */
-
-static int
-yaml_emitter_check_empty_document(yaml_emitter_t *emitter);
-
-static int
-yaml_emitter_check_empty_sequence(yaml_emitter_t *emitter);
-
-static int
-yaml_emitter_check_empty_mapping(yaml_emitter_t *emitter);
-
-static int
-yaml_emitter_check_simple_key(yaml_emitter_t *emitter);
-
-static int
-yaml_emitter_select_scalar_style(yaml_emitter_t *emitter, yaml_event_t *event);
-
-/*
- * Processors.
- */
-
-static int
-yaml_emitter_process_anchor(yaml_emitter_t *emitter);
-
-static int
-yaml_emitter_process_tag(yaml_emitter_t *emitter);
-
-static int
-yaml_emitter_process_scalar(yaml_emitter_t *emitter);
-
-/*
- * Analyzers.
- */
-
-static int
-yaml_emitter_analyze_version_directive(yaml_emitter_t *emitter,
- yaml_version_directive_t version_directive);
-
-static int
-yaml_emitter_analyze_tag_directive(yaml_emitter_t *emitter,
- yaml_tag_directive_t tag_directive);
-
-static int
-yaml_emitter_analyze_anchor(yaml_emitter_t *emitter,
- yaml_char_t *anchor, int alias);
-
-static int
-yaml_emitter_analyze_tag(yaml_emitter_t *emitter,
- yaml_char_t *tag);
-
-static int
-yaml_emitter_analyze_scalar(yaml_emitter_t *emitter,
- yaml_char_t *value, size_t length);
-
-static int
-yaml_emitter_analyze_event(yaml_emitter_t *emitter,
- yaml_event_t *event);
-
-/*
- * Writers.
- */
-
-static int
-yaml_emitter_write_bom(yaml_emitter_t *emitter);
-
-static int
-yaml_emitter_write_indent(yaml_emitter_t *emitter);
-
-static int
-yaml_emitter_write_indicator(yaml_emitter_t *emitter,
- const char *indicator, int need_whitespace,
- int is_whitespace, int is_indention);
-
-static int
-yaml_emitter_write_anchor(yaml_emitter_t *emitter,
- yaml_char_t *value, size_t length);
-
-static int
-yaml_emitter_write_tag_handle(yaml_emitter_t *emitter,
- yaml_char_t *value, size_t length);
-
-static int
-yaml_emitter_write_tag_content(yaml_emitter_t *emitter,
- yaml_char_t *value, size_t length, int need_whitespace);
-
-static int
-yaml_emitter_write_plain_scalar(yaml_emitter_t *emitter,
- yaml_char_t *value, size_t length, int allow_breaks);
-
-static int
-yaml_emitter_write_single_quoted_scalar(yaml_emitter_t *emitter,
- yaml_char_t *value, size_t length, int allow_breaks);
-
-static int
-yaml_emitter_write_double_quoted_scalar(yaml_emitter_t *emitter,
- yaml_char_t *value, size_t length, int allow_breaks);
-
-static int
-yaml_emitter_write_block_scalar_hints(yaml_emitter_t *emitter,
- yaml_string_t string);
-
-static int
-yaml_emitter_write_literal_scalar(yaml_emitter_t *emitter,
- yaml_char_t *value, size_t length);
-
-static int
-yaml_emitter_write_folded_scalar(yaml_emitter_t *emitter,
- yaml_char_t *value, size_t length);
-
-/*
- * Set an emitter error and return 0.
- */
-
-static int
-yaml_emitter_set_emitter_error(yaml_emitter_t *emitter, const char *problem)
-{
- emitter->error = YAML_EMITTER_ERROR;
- emitter->problem = problem;
-
- return 0;
-}
-
-/*
- * Emit an event.
- */
-
-YAML_DECLARE(int)
-yaml_emitter_emit(yaml_emitter_t *emitter, yaml_event_t *event)
-{
- if (!ENQUEUE(emitter, emitter->events, *event)) {
- yaml_event_delete(event);
- return 0;
- }
-
- while (!yaml_emitter_need_more_events(emitter)) {
- if (!yaml_emitter_analyze_event(emitter, emitter->events.head))
- return 0;
- if (!yaml_emitter_state_machine(emitter, emitter->events.head))
- return 0;
- yaml_event_delete(&DEQUEUE(emitter, emitter->events));
- }
-
- return 1;
-}
-
-/*
- * Check if we need to accumulate more events before emitting.
- *
- * We accumulate extra
- * - 1 event for DOCUMENT-START
- * - 2 events for SEQUENCE-START
- * - 3 events for MAPPING-START
- */
-
-static int
-yaml_emitter_need_more_events(yaml_emitter_t *emitter)
-{
- int level = 0;
- int accumulate = 0;
- yaml_event_t *event;
-
- if (QUEUE_EMPTY(emitter, emitter->events))
- return 1;
-
- switch (emitter->events.head->type) {
- case YAML_DOCUMENT_START_EVENT:
- accumulate = 1;
- break;
- case YAML_SEQUENCE_START_EVENT:
- accumulate = 2;
- break;
- case YAML_MAPPING_START_EVENT:
- accumulate = 3;
- break;
- default:
- return 0;
- }
-
- if (emitter->events.tail - emitter->events.head > accumulate)
- return 0;
-
- for (event = emitter->events.head; event != emitter->events.tail; event ++) {
- switch (event->type) {
- case YAML_STREAM_START_EVENT:
- case YAML_DOCUMENT_START_EVENT:
- case YAML_SEQUENCE_START_EVENT:
- case YAML_MAPPING_START_EVENT:
- level += 1;
- break;
- case YAML_STREAM_END_EVENT:
- case YAML_DOCUMENT_END_EVENT:
- case YAML_SEQUENCE_END_EVENT:
- case YAML_MAPPING_END_EVENT:
- level -= 1;
- break;
- default:
- break;
- }
- if (!level)
- return 0;
- }
-
- return 1;
-}
-
-/*
- * Append a directive to the directives stack.
- */
-
-static int
-yaml_emitter_append_tag_directive(yaml_emitter_t *emitter,
- yaml_tag_directive_t value, int allow_duplicates)
-{
- yaml_tag_directive_t *tag_directive;
- yaml_tag_directive_t copy = { NULL, NULL };
-
- for (tag_directive = emitter->tag_directives.start;
- tag_directive != emitter->tag_directives.top; tag_directive ++) {
- if (strcmp((char *)value.handle, (char *)tag_directive->handle) == 0) {
- if (allow_duplicates)
- return 1;
- return yaml_emitter_set_emitter_error(emitter,
- "duplicate %TAG directive");
- }
- }
-
- copy.handle = yaml_strdup(value.handle);
- copy.prefix = yaml_strdup(value.prefix);
- if (!copy.handle || !copy.prefix) {
- emitter->error = YAML_MEMORY_ERROR;
- goto error;
- }
-
- if (!PUSH(emitter, emitter->tag_directives, copy))
- goto error;
-
- return 1;
-
-error:
- yaml_free(copy.handle);
- yaml_free(copy.prefix);
- return 0;
-}
-
-/*
- * Increase the indentation level.
- */
-
-static int
-yaml_emitter_increase_indent(yaml_emitter_t *emitter,
- int flow, int indentless)
-{
- if (!PUSH(emitter, emitter->indents, emitter->indent))
- return 0;
-
- if (emitter->indent < 0) {
- emitter->indent = flow ? emitter->best_indent : 0;
- }
- else if (!indentless) {
- emitter->indent += emitter->best_indent;
- }
-
- return 1;
-}
-
-/*
- * State dispatcher.
- */
-
-static int
-yaml_emitter_state_machine(yaml_emitter_t *emitter, yaml_event_t *event)
-{
- switch (emitter->state)
- {
- case YAML_EMIT_STREAM_START_STATE:
- return yaml_emitter_emit_stream_start(emitter, event);
-
- case YAML_EMIT_FIRST_DOCUMENT_START_STATE:
- return yaml_emitter_emit_document_start(emitter, event, 1);
-
- case YAML_EMIT_DOCUMENT_START_STATE:
- return yaml_emitter_emit_document_start(emitter, event, 0);
-
- case YAML_EMIT_DOCUMENT_CONTENT_STATE:
- return yaml_emitter_emit_document_content(emitter, event);
-
- case YAML_EMIT_DOCUMENT_END_STATE:
- return yaml_emitter_emit_document_end(emitter, event);
-
- case YAML_EMIT_FLOW_SEQUENCE_FIRST_ITEM_STATE:
- return yaml_emitter_emit_flow_sequence_item(emitter, event, 1);
-
- case YAML_EMIT_FLOW_SEQUENCE_ITEM_STATE:
- return yaml_emitter_emit_flow_sequence_item(emitter, event, 0);
-
- case YAML_EMIT_FLOW_MAPPING_FIRST_KEY_STATE:
- return yaml_emitter_emit_flow_mapping_key(emitter, event, 1);
-
- case YAML_EMIT_FLOW_MAPPING_KEY_STATE:
- return yaml_emitter_emit_flow_mapping_key(emitter, event, 0);
-
- case YAML_EMIT_FLOW_MAPPING_SIMPLE_VALUE_STATE:
- return yaml_emitter_emit_flow_mapping_value(emitter, event, 1);
-
- case YAML_EMIT_FLOW_MAPPING_VALUE_STATE:
- return yaml_emitter_emit_flow_mapping_value(emitter, event, 0);
-
- case YAML_EMIT_BLOCK_SEQUENCE_FIRST_ITEM_STATE:
- return yaml_emitter_emit_block_sequence_item(emitter, event, 1);
-
- case YAML_EMIT_BLOCK_SEQUENCE_ITEM_STATE:
- return yaml_emitter_emit_block_sequence_item(emitter, event, 0);
-
- case YAML_EMIT_BLOCK_MAPPING_FIRST_KEY_STATE:
- return yaml_emitter_emit_block_mapping_key(emitter, event, 1);
-
- case YAML_EMIT_BLOCK_MAPPING_KEY_STATE:
- return yaml_emitter_emit_block_mapping_key(emitter, event, 0);
-
- case YAML_EMIT_BLOCK_MAPPING_SIMPLE_VALUE_STATE:
- return yaml_emitter_emit_block_mapping_value(emitter, event, 1);
-
- case YAML_EMIT_BLOCK_MAPPING_VALUE_STATE:
- return yaml_emitter_emit_block_mapping_value(emitter, event, 0);
-
- case YAML_EMIT_END_STATE:
- return yaml_emitter_set_emitter_error(emitter,
- "expected nothing after STREAM-END");
-
- default:
- assert(1); /* Invalid state. */
- }
-
- return 0;
-}
-
-/*
- * Expect STREAM-START.
- */
-
-static int
-yaml_emitter_emit_stream_start(yaml_emitter_t *emitter,
- yaml_event_t *event)
-{
- emitter->open_ended = 0;
- if (event->type == YAML_STREAM_START_EVENT)
- {
- if (!emitter->encoding) {
- emitter->encoding = event->data.stream_start.encoding;
- }
-
- if (!emitter->encoding) {
- emitter->encoding = YAML_UTF8_ENCODING;
- }
-
- if (emitter->best_indent < 2 || emitter->best_indent > 9) {
- emitter->best_indent = 2;
- }
-
- if (emitter->best_width >= 0
- && emitter->best_width <= emitter->best_indent*2) {
- emitter->best_width = 80;
- }
-
- if (emitter->best_width < 0) {
- emitter->best_width = INT_MAX;
- }
-
- if (!emitter->line_break) {
- emitter->line_break = YAML_LN_BREAK;
- }
-
- emitter->indent = -1;
-
- emitter->line = 0;
- emitter->column = 0;
- emitter->whitespace = 1;
- emitter->indention = 1;
-
- if (emitter->encoding != YAML_UTF8_ENCODING) {
- if (!yaml_emitter_write_bom(emitter))
- return 0;
- }
-
- emitter->state = YAML_EMIT_FIRST_DOCUMENT_START_STATE;
-
- return 1;
- }
-
- return yaml_emitter_set_emitter_error(emitter,
- "expected STREAM-START");
-}
-
-/*
- * Expect DOCUMENT-START or STREAM-END.
- */
-
-static int
-yaml_emitter_emit_document_start(yaml_emitter_t *emitter,
- yaml_event_t *event, int first)
-{
- if (event->type == YAML_DOCUMENT_START_EVENT)
- {
- yaml_tag_directive_t default_tag_directives[] = {
- {(yaml_char_t *)"!", (yaml_char_t *)"!"},
- {(yaml_char_t *)"!!", (yaml_char_t *)"tag:yaml.org,2002:"},
- {NULL, NULL}
- };
- yaml_tag_directive_t *tag_directive;
- int implicit;
-
- if (event->data.document_start.version_directive) {
- if (!yaml_emitter_analyze_version_directive(emitter,
- *event->data.document_start.version_directive))
- return 0;
- }
-
- for (tag_directive = event->data.document_start.tag_directives.start;
- tag_directive != event->data.document_start.tag_directives.end;
- tag_directive ++) {
- if (!yaml_emitter_analyze_tag_directive(emitter, *tag_directive))
- return 0;
- if (!yaml_emitter_append_tag_directive(emitter, *tag_directive, 0))
- return 0;
- }
-
- for (tag_directive = default_tag_directives;
- tag_directive->handle; tag_directive ++) {
- if (!yaml_emitter_append_tag_directive(emitter, *tag_directive, 1))
- return 0;
- }
-
- implicit = event->data.document_start.implicit;
- if (!first || emitter->canonical) {
- implicit = 0;
- }
-
- if ((event->data.document_start.version_directive ||
- (event->data.document_start.tag_directives.start
- != event->data.document_start.tag_directives.end)) &&
- emitter->open_ended)
- {
- if (!yaml_emitter_write_indicator(emitter, "...", 1, 0, 0))
- return 0;
- if (!yaml_emitter_write_indent(emitter))
- return 0;
- }
- emitter->open_ended = 0;
-
- if (event->data.document_start.version_directive) {
- implicit = 0;
- if (!yaml_emitter_write_indicator(emitter, "%YAML", 1, 0, 0))
- return 0;
- if (event->data.document_start.version_directive->minor == 1) {
- if (!yaml_emitter_write_indicator(emitter, "1.1", 1, 0, 0))
- return 0;
- }
- else {
- if (!yaml_emitter_write_indicator(emitter, "1.2", 1, 0, 0))
- return 0;
- }
- if (!yaml_emitter_write_indent(emitter))
- return 0;
- }
-
- if (event->data.document_start.tag_directives.start
- != event->data.document_start.tag_directives.end) {
- implicit = 0;
- for (tag_directive = event->data.document_start.tag_directives.start;
- tag_directive != event->data.document_start.tag_directives.end;
- tag_directive ++) {
- if (!yaml_emitter_write_indicator(emitter, "%TAG", 1, 0, 0))
- return 0;
- if (!yaml_emitter_write_tag_handle(emitter, tag_directive->handle,
- strlen((char *)tag_directive->handle)))
- return 0;
- if (!yaml_emitter_write_tag_content(emitter, tag_directive->prefix,
- strlen((char *)tag_directive->prefix), 1))
- return 0;
- if (!yaml_emitter_write_indent(emitter))
- return 0;
- }
- }
-
- if (yaml_emitter_check_empty_document(emitter)) {
- implicit = 0;
- }
-
- if (!implicit) {
- if (!yaml_emitter_write_indent(emitter))
- return 0;
- if (!yaml_emitter_write_indicator(emitter, "---", 1, 0, 0))
- return 0;
- if (emitter->canonical) {
- if (!yaml_emitter_write_indent(emitter))
- return 0;
- }
- }
-
- emitter->state = YAML_EMIT_DOCUMENT_CONTENT_STATE;
-
- emitter->open_ended = 0;
- return 1;
- }
-
- else if (event->type == YAML_STREAM_END_EVENT)
- {
-
- /**
- * This can happen if a block scalar with trailing empty lines
- * is at the end of the stream
- */
- if (emitter->open_ended == 2)
- {
- if (!yaml_emitter_write_indicator(emitter, "...", 1, 0, 0))
- return 0;
- emitter->open_ended = 0;
- if (!yaml_emitter_write_indent(emitter))
- return 0;
- }
- if (!yaml_emitter_flush(emitter))
- return 0;
-
- emitter->state = YAML_EMIT_END_STATE;
-
- return 1;
- }
-
- return yaml_emitter_set_emitter_error(emitter,
- "expected DOCUMENT-START or STREAM-END");
-}
-
-/*
- * Expect the root node.
- */
-
-static int
-yaml_emitter_emit_document_content(yaml_emitter_t *emitter,
- yaml_event_t *event)
-{
- if (!PUSH(emitter, emitter->states, YAML_EMIT_DOCUMENT_END_STATE))
- return 0;
-
- return yaml_emitter_emit_node(emitter, event, 1, 0, 0, 0);
-}
-
-/*
- * Expect DOCUMENT-END.
- */
-
-static int
-yaml_emitter_emit_document_end(yaml_emitter_t *emitter,
- yaml_event_t *event)
-{
- if (event->type == YAML_DOCUMENT_END_EVENT)
- {
- if (!yaml_emitter_write_indent(emitter))
- return 0;
- if (!event->data.document_end.implicit) {
- if (!yaml_emitter_write_indicator(emitter, "...", 1, 0, 0))
- return 0;
- emitter->open_ended = 0;
- if (!yaml_emitter_write_indent(emitter))
- return 0;
- }
- else if (!emitter->open_ended)
- emitter->open_ended = 1;
- if (!yaml_emitter_flush(emitter))
- return 0;
-
- emitter->state = YAML_EMIT_DOCUMENT_START_STATE;
-
- while (!STACK_EMPTY(emitter, emitter->tag_directives)) {
- yaml_tag_directive_t tag_directive = POP(emitter,
- emitter->tag_directives);
- yaml_free(tag_directive.handle);
- yaml_free(tag_directive.prefix);
- }
-
- return 1;
- }
-
- return yaml_emitter_set_emitter_error(emitter,
- "expected DOCUMENT-END");
-}
-
-/*
- *
- * Expect a flow item node.
- */
-
-static int
-yaml_emitter_emit_flow_sequence_item(yaml_emitter_t *emitter,
- yaml_event_t *event, int first)
-{
- if (first)
- {
- if (!yaml_emitter_write_indicator(emitter, "[", 1, 1, 0))
- return 0;
- if (!yaml_emitter_increase_indent(emitter, 1, 0))
- return 0;
- emitter->flow_level ++;
- }
-
- if (event->type == YAML_SEQUENCE_END_EVENT)
- {
- emitter->flow_level --;
- emitter->indent = POP(emitter, emitter->indents);
- if (emitter->canonical && !first) {
- if (!yaml_emitter_write_indicator(emitter, ",", 0, 0, 0))
- return 0;
- if (!yaml_emitter_write_indent(emitter))
- return 0;
- }
- if (!yaml_emitter_write_indicator(emitter, "]", 0, 0, 0))
- return 0;
- emitter->state = POP(emitter, emitter->states);
-
- return 1;
- }
-
- if (!first) {
- if (!yaml_emitter_write_indicator(emitter, ",", 0, 0, 0))
- return 0;
- }
-
- if (emitter->canonical || emitter->column > emitter->best_width) {
- if (!yaml_emitter_write_indent(emitter))
- return 0;
- }
- if (!PUSH(emitter, emitter->states, YAML_EMIT_FLOW_SEQUENCE_ITEM_STATE))
- return 0;
-
- return yaml_emitter_emit_node(emitter, event, 0, 1, 0, 0);
-}
-
-/*
- * Expect a flow key node.
- */
-
-static int
-yaml_emitter_emit_flow_mapping_key(yaml_emitter_t *emitter,
- yaml_event_t *event, int first)
-{
- if (first)
- {
- if (!yaml_emitter_write_indicator(emitter, "{", 1, 1, 0))
- return 0;
- if (!yaml_emitter_increase_indent(emitter, 1, 0))
- return 0;
- emitter->flow_level ++;
- }
-
- if (event->type == YAML_MAPPING_END_EVENT)
- {
- emitter->flow_level --;
- emitter->indent = POP(emitter, emitter->indents);
- if (emitter->canonical && !first) {
- if (!yaml_emitter_write_indicator(emitter, ",", 0, 0, 0))
- return 0;
- if (!yaml_emitter_write_indent(emitter))
- return 0;
- }
- if (!yaml_emitter_write_indicator(emitter, "}", 0, 0, 0))
- return 0;
- emitter->state = POP(emitter, emitter->states);
-
- return 1;
- }
-
- if (!first) {
- if (!yaml_emitter_write_indicator(emitter, ",", 0, 0, 0))
- return 0;
- }
- if (emitter->canonical || emitter->column > emitter->best_width) {
- if (!yaml_emitter_write_indent(emitter))
- return 0;
- }
-
- if (!emitter->canonical && yaml_emitter_check_simple_key(emitter))
- {
- if (!PUSH(emitter, emitter->states,
- YAML_EMIT_FLOW_MAPPING_SIMPLE_VALUE_STATE))
- return 0;
-
- return yaml_emitter_emit_node(emitter, event, 0, 0, 1, 1);
- }
- else
- {
- if (!yaml_emitter_write_indicator(emitter, "?", 1, 0, 0))
- return 0;
- if (!PUSH(emitter, emitter->states,
- YAML_EMIT_FLOW_MAPPING_VALUE_STATE))
- return 0;
-
- return yaml_emitter_emit_node(emitter, event, 0, 0, 1, 0);
- }
-}
-
-/*
- * Expect a flow value node.
- */
-
-static int
-yaml_emitter_emit_flow_mapping_value(yaml_emitter_t *emitter,
- yaml_event_t *event, int simple)
-{
- if (simple) {
- if (!yaml_emitter_write_indicator(emitter, ":", 0, 0, 0))
- return 0;
- }
- else {
- if (emitter->canonical || emitter->column > emitter->best_width) {
- if (!yaml_emitter_write_indent(emitter))
- return 0;
- }
- if (!yaml_emitter_write_indicator(emitter, ":", 1, 0, 0))
- return 0;
- }
- if (!PUSH(emitter, emitter->states, YAML_EMIT_FLOW_MAPPING_KEY_STATE))
- return 0;
- return yaml_emitter_emit_node(emitter, event, 0, 0, 1, 0);
-}
-
-/*
- * Expect a block item node.
- */
-
-static int
-yaml_emitter_emit_block_sequence_item(yaml_emitter_t *emitter,
- yaml_event_t *event, int first)
-{
- if (first)
- {
- if (!yaml_emitter_increase_indent(emitter, 0,
- (emitter->mapping_context && !emitter->indention)))
- return 0;
- }
-
- if (event->type == YAML_SEQUENCE_END_EVENT)
- {
- emitter->indent = POP(emitter, emitter->indents);
- emitter->state = POP(emitter, emitter->states);
-
- return 1;
- }
-
- if (!yaml_emitter_write_indent(emitter))
- return 0;
- if (!yaml_emitter_write_indicator(emitter, "-", 1, 0, 1))
- return 0;
- if (!PUSH(emitter, emitter->states,
- YAML_EMIT_BLOCK_SEQUENCE_ITEM_STATE))
- return 0;
-
- return yaml_emitter_emit_node(emitter, event, 0, 1, 0, 0);
-}
-
-/*
- * Expect a block key node.
- */
-
-static int
-yaml_emitter_emit_block_mapping_key(yaml_emitter_t *emitter,
- yaml_event_t *event, int first)
-{
- if (first)
- {
- if (!yaml_emitter_increase_indent(emitter, 0, 0))
- return 0;
- }
-
- if (event->type == YAML_MAPPING_END_EVENT)
- {
- emitter->indent = POP(emitter, emitter->indents);
- emitter->state = POP(emitter, emitter->states);
-
- return 1;
- }
-
- if (!yaml_emitter_write_indent(emitter))
- return 0;
-
- if (yaml_emitter_check_simple_key(emitter))
- {
- if (!PUSH(emitter, emitter->states,
- YAML_EMIT_BLOCK_MAPPING_SIMPLE_VALUE_STATE))
- return 0;
-
- return yaml_emitter_emit_node(emitter, event, 0, 0, 1, 1);
- }
- else
- {
- if (!yaml_emitter_write_indicator(emitter, "?", 1, 0, 1))
- return 0;
- if (!PUSH(emitter, emitter->states,
- YAML_EMIT_BLOCK_MAPPING_VALUE_STATE))
- return 0;
-
- return yaml_emitter_emit_node(emitter, event, 0, 0, 1, 0);
- }
-}
-
-/*
- * Expect a block value node.
- */
-
-static int
-yaml_emitter_emit_block_mapping_value(yaml_emitter_t *emitter,
- yaml_event_t *event, int simple)
-{
- if (simple) {
- if (!yaml_emitter_write_indicator(emitter, ":", 0, 0, 0))
- return 0;
- }
- else {
- if (!yaml_emitter_write_indent(emitter))
- return 0;
- if (!yaml_emitter_write_indicator(emitter, ":", 1, 0, 1))
- return 0;
- }
- if (!PUSH(emitter, emitter->states,
- YAML_EMIT_BLOCK_MAPPING_KEY_STATE))
- return 0;
-
- return yaml_emitter_emit_node(emitter, event, 0, 0, 1, 0);
-}
-
-/*
- * Expect a node.
- */
-
-static int
-yaml_emitter_emit_node(yaml_emitter_t *emitter, yaml_event_t *event,
- int root, int sequence, int mapping, int simple_key)
-{
- emitter->root_context = root;
- emitter->sequence_context = sequence;
- emitter->mapping_context = mapping;
- emitter->simple_key_context = simple_key;
-
- switch (event->type)
- {
- case YAML_ALIAS_EVENT:
- return yaml_emitter_emit_alias(emitter, event);
-
- case YAML_SCALAR_EVENT:
- return yaml_emitter_emit_scalar(emitter, event);
-
- case YAML_SEQUENCE_START_EVENT:
- return yaml_emitter_emit_sequence_start(emitter, event);
-
- case YAML_MAPPING_START_EVENT:
- return yaml_emitter_emit_mapping_start(emitter, event);
-
- default:
- return yaml_emitter_set_emitter_error(emitter,
- "expected SCALAR, SEQUENCE-START, MAPPING-START, or ALIAS");
- }
-
- return 0;
-}
-
-/*
- * Expect ALIAS.
- */
-
-static int
-yaml_emitter_emit_alias(yaml_emitter_t *emitter, SHIM(yaml_event_t *event))
-{
- if (!yaml_emitter_process_anchor(emitter))
- return 0;
- if (emitter->simple_key_context)
- if (!PUT(emitter, ' ')) return 0;
- emitter->state = POP(emitter, emitter->states);
-
- return 1;
-}
-
-/*
- * Expect SCALAR.
- */
-
-static int
-yaml_emitter_emit_scalar(yaml_emitter_t *emitter, yaml_event_t *event)
-{
- if (!yaml_emitter_select_scalar_style(emitter, event))
- return 0;
- if (!yaml_emitter_process_anchor(emitter))
- return 0;
- if (!yaml_emitter_process_tag(emitter))
- return 0;
- if (!yaml_emitter_increase_indent(emitter, 1, 0))
- return 0;
- if (!yaml_emitter_process_scalar(emitter))
- return 0;
- emitter->indent = POP(emitter, emitter->indents);
- emitter->state = POP(emitter, emitter->states);
-
- return 1;
-}
-
-/*
- * Expect SEQUENCE-START.
- */
-
-static int
-yaml_emitter_emit_sequence_start(yaml_emitter_t *emitter, yaml_event_t *event)
-{
- if (!yaml_emitter_process_anchor(emitter))
- return 0;
- if (!yaml_emitter_process_tag(emitter))
- return 0;
-
- if (emitter->flow_level || emitter->canonical
- || event->data.sequence_start.style == YAML_FLOW_SEQUENCE_STYLE
- || yaml_emitter_check_empty_sequence(emitter)) {
- emitter->state = YAML_EMIT_FLOW_SEQUENCE_FIRST_ITEM_STATE;
- }
- else {
- emitter->state = YAML_EMIT_BLOCK_SEQUENCE_FIRST_ITEM_STATE;
- }
-
- return 1;
-}
-
-/*
- * Expect MAPPING-START.
- */
-
-static int
-yaml_emitter_emit_mapping_start(yaml_emitter_t *emitter, yaml_event_t *event)
-{
- if (!yaml_emitter_process_anchor(emitter))
- return 0;
- if (!yaml_emitter_process_tag(emitter))
- return 0;
-
- if (emitter->flow_level || emitter->canonical
- || event->data.mapping_start.style == YAML_FLOW_MAPPING_STYLE
- || yaml_emitter_check_empty_mapping(emitter)) {
- emitter->state = YAML_EMIT_FLOW_MAPPING_FIRST_KEY_STATE;
- }
- else {
- emitter->state = YAML_EMIT_BLOCK_MAPPING_FIRST_KEY_STATE;
- }
-
- return 1;
-}
-
-/*
- * Check if the document content is an empty scalar.
- */
-
-static int
-yaml_emitter_check_empty_document(SHIM(yaml_emitter_t *emitter))
-{
- return 0;
-}
-
-/*
- * Check if the next events represent an empty sequence.
- */
-
-static int
-yaml_emitter_check_empty_sequence(yaml_emitter_t *emitter)
-{
- if (emitter->events.tail - emitter->events.head < 2)
- return 0;
-
- return (emitter->events.head[0].type == YAML_SEQUENCE_START_EVENT
- && emitter->events.head[1].type == YAML_SEQUENCE_END_EVENT);
-}
-
-/*
- * Check if the next events represent an empty mapping.
- */
-
-static int
-yaml_emitter_check_empty_mapping(yaml_emitter_t *emitter)
-{
- if (emitter->events.tail - emitter->events.head < 2)
- return 0;
-
- return (emitter->events.head[0].type == YAML_MAPPING_START_EVENT
- && emitter->events.head[1].type == YAML_MAPPING_END_EVENT);
-}
-
-/*
- * Check if the next node can be expressed as a simple key.
- */
-
-static int
-yaml_emitter_check_simple_key(yaml_emitter_t *emitter)
-{
- yaml_event_t *event = emitter->events.head;
- size_t length = 0;
-
- switch (event->type)
- {
- case YAML_ALIAS_EVENT:
- length += emitter->anchor_data.anchor_length;
- break;
-
- case YAML_SCALAR_EVENT:
- if (emitter->scalar_data.multiline)
- return 0;
- length += emitter->anchor_data.anchor_length
- + emitter->tag_data.handle_length
- + emitter->tag_data.suffix_length
- + emitter->scalar_data.length;
- break;
-
- case YAML_SEQUENCE_START_EVENT:
- if (!yaml_emitter_check_empty_sequence(emitter))
- return 0;
- length += emitter->anchor_data.anchor_length
- + emitter->tag_data.handle_length
- + emitter->tag_data.suffix_length;
- break;
-
- case YAML_MAPPING_START_EVENT:
- if (!yaml_emitter_check_empty_mapping(emitter))
- return 0;
- length += emitter->anchor_data.anchor_length
- + emitter->tag_data.handle_length
- + emitter->tag_data.suffix_length;
- break;
-
- default:
- return 0;
- }
-
- if (length > 128)
- return 0;
-
- return 1;
-}
-
-/*
- * Determine an acceptable scalar style.
- */
-
-static int
-yaml_emitter_select_scalar_style(yaml_emitter_t *emitter, yaml_event_t *event)
-{
- yaml_scalar_style_t style = event->data.scalar.style;
- int no_tag = (!emitter->tag_data.handle && !emitter->tag_data.suffix);
-
- if (no_tag && !event->data.scalar.plain_implicit
- && !event->data.scalar.quoted_implicit) {
- return yaml_emitter_set_emitter_error(emitter,
- "neither tag nor implicit flags are specified");
- }
-
- if (style == YAML_ANY_SCALAR_STYLE)
- style = YAML_PLAIN_SCALAR_STYLE;
-
- if (emitter->canonical)
- style = YAML_DOUBLE_QUOTED_SCALAR_STYLE;
-
- if (emitter->simple_key_context && emitter->scalar_data.multiline)
- style = YAML_DOUBLE_QUOTED_SCALAR_STYLE;
-
- if (style == YAML_PLAIN_SCALAR_STYLE)
- {
- if ((emitter->flow_level && !emitter->scalar_data.flow_plain_allowed)
- || (!emitter->flow_level && !emitter->scalar_data.block_plain_allowed))
- style = YAML_SINGLE_QUOTED_SCALAR_STYLE;
- if (!emitter->scalar_data.length
- && (emitter->flow_level || emitter->simple_key_context))
- style = YAML_SINGLE_QUOTED_SCALAR_STYLE;
- if (no_tag && !event->data.scalar.plain_implicit)
- style = YAML_SINGLE_QUOTED_SCALAR_STYLE;
- }
-
- if (style == YAML_SINGLE_QUOTED_SCALAR_STYLE)
- {
- if (!emitter->scalar_data.single_quoted_allowed)
- style = YAML_DOUBLE_QUOTED_SCALAR_STYLE;
- }
-
- if (style == YAML_LITERAL_SCALAR_STYLE || style == YAML_FOLDED_SCALAR_STYLE)
- {
- if (!emitter->scalar_data.block_allowed
- || emitter->flow_level || emitter->simple_key_context)
- style = YAML_DOUBLE_QUOTED_SCALAR_STYLE;
- }
-
- if (no_tag && !event->data.scalar.quoted_implicit
- && style != YAML_PLAIN_SCALAR_STYLE)
- {
- emitter->tag_data.handle = (yaml_char_t *)"!";
- emitter->tag_data.handle_length = 1;
- }
-
- emitter->scalar_data.style = style;
-
- return 1;
-}
-
-/*
- * Write an anchor.
- */
-
-static int
-yaml_emitter_process_anchor(yaml_emitter_t *emitter)
-{
- if (!emitter->anchor_data.anchor)
- return 1;
-
- if (!yaml_emitter_write_indicator(emitter,
- (emitter->anchor_data.alias ? "*" : "&"), 1, 0, 0))
- return 0;
-
- return yaml_emitter_write_anchor(emitter,
- emitter->anchor_data.anchor, emitter->anchor_data.anchor_length);
-}
-
-/*
- * Write a tag.
- */
-
-static int
-yaml_emitter_process_tag(yaml_emitter_t *emitter)
-{
- if (!emitter->tag_data.handle && !emitter->tag_data.suffix)
- return 1;
-
- if (emitter->tag_data.handle)
- {
- if (!yaml_emitter_write_tag_handle(emitter, emitter->tag_data.handle,
- emitter->tag_data.handle_length))
- return 0;
- if (emitter->tag_data.suffix) {
- if (!yaml_emitter_write_tag_content(emitter, emitter->tag_data.suffix,
- emitter->tag_data.suffix_length, 0))
- return 0;
- }
- }
- else
- {
- if (!yaml_emitter_write_indicator(emitter, "!<", 1, 0, 0))
- return 0;
- if (!yaml_emitter_write_tag_content(emitter, emitter->tag_data.suffix,
- emitter->tag_data.suffix_length, 0))
- return 0;
- if (!yaml_emitter_write_indicator(emitter, ">", 0, 0, 0))
- return 0;
- }
-
- return 1;
-}
-
-/*
- * Write a scalar.
- */
-
-static int
-yaml_emitter_process_scalar(yaml_emitter_t *emitter)
-{
- switch (emitter->scalar_data.style)
- {
- case YAML_PLAIN_SCALAR_STYLE:
- return yaml_emitter_write_plain_scalar(emitter,
- emitter->scalar_data.value, emitter->scalar_data.length,
- !emitter->simple_key_context);
-
- case YAML_SINGLE_QUOTED_SCALAR_STYLE:
- return yaml_emitter_write_single_quoted_scalar(emitter,
- emitter->scalar_data.value, emitter->scalar_data.length,
- !emitter->simple_key_context);
-
- case YAML_DOUBLE_QUOTED_SCALAR_STYLE:
- return yaml_emitter_write_double_quoted_scalar(emitter,
- emitter->scalar_data.value, emitter->scalar_data.length,
- !emitter->simple_key_context);
-
- case YAML_LITERAL_SCALAR_STYLE:
- return yaml_emitter_write_literal_scalar(emitter,
- emitter->scalar_data.value, emitter->scalar_data.length);
-
- case YAML_FOLDED_SCALAR_STYLE:
- return yaml_emitter_write_folded_scalar(emitter,
- emitter->scalar_data.value, emitter->scalar_data.length);
-
- default:
- assert(1); /* Impossible. */
- }
-
- return 0;
-}
-
-/*
- * Check if a %YAML directive is valid.
- */
-
-static int
-yaml_emitter_analyze_version_directive(yaml_emitter_t *emitter,
- yaml_version_directive_t version_directive)
-{
- if (version_directive.major != 1 || (
- version_directive.minor != 1
- && version_directive.minor != 2
- )) {
- return yaml_emitter_set_emitter_error(emitter,
- "incompatible %YAML directive");
- }
-
- return 1;
-}
-
-/*
- * Check if a %TAG directive is valid.
- */
-
-static int
-yaml_emitter_analyze_tag_directive(yaml_emitter_t *emitter,
- yaml_tag_directive_t tag_directive)
-{
- yaml_string_t handle;
- yaml_string_t prefix;
- size_t handle_length;
- size_t prefix_length;
-
- handle_length = strlen((char *)tag_directive.handle);
- prefix_length = strlen((char *)tag_directive.prefix);
- STRING_ASSIGN(handle, tag_directive.handle, handle_length);
- STRING_ASSIGN(prefix, tag_directive.prefix, prefix_length);
-
- if (handle.start == handle.end) {
- return yaml_emitter_set_emitter_error(emitter,
- "tag handle must not be empty");
- }
-
- if (handle.start[0] != '!') {
- return yaml_emitter_set_emitter_error(emitter,
- "tag handle must start with '!'");
- }
-
- if (handle.end[-1] != '!') {
- return yaml_emitter_set_emitter_error(emitter,
- "tag handle must end with '!'");
- }
-
- handle.pointer ++;
-
- while (handle.pointer < handle.end-1) {
- if (!IS_ALPHA(handle)) {
- return yaml_emitter_set_emitter_error(emitter,
- "tag handle must contain alphanumerical characters only");
- }
- MOVE(handle);
- }
-
- if (prefix.start == prefix.end) {
- return yaml_emitter_set_emitter_error(emitter,
- "tag prefix must not be empty");
- }
-
- return 1;
-}
-
-/*
- * Check if an anchor is valid.
- */
-
-static int
-yaml_emitter_analyze_anchor(yaml_emitter_t *emitter,
- yaml_char_t *anchor, int alias)
-{
- size_t anchor_length;
- yaml_string_t string;
-
- anchor_length = strlen((char *)anchor);
- STRING_ASSIGN(string, anchor, anchor_length);
-
- if (string.start == string.end) {
- return yaml_emitter_set_emitter_error(emitter, alias ?
- "alias value must not be empty" :
- "anchor value must not be empty");
- }
-
- while (string.pointer != string.end) {
- if (!IS_ALPHA(string)) {
- return yaml_emitter_set_emitter_error(emitter, alias ?
- "alias value must contain alphanumerical characters only" :
- "anchor value must contain alphanumerical characters only");
- }
- MOVE(string);
- }
-
- emitter->anchor_data.anchor = string.start;
- emitter->anchor_data.anchor_length = string.end - string.start;
- emitter->anchor_data.alias = alias;
-
- return 1;
-}
-
-/*
- * Check if a tag is valid.
- */
-
-static int
-yaml_emitter_analyze_tag(yaml_emitter_t *emitter,
- yaml_char_t *tag)
-{
- size_t tag_length;
- yaml_string_t string;
- yaml_tag_directive_t *tag_directive;
-
- tag_length = strlen((char *)tag);
- STRING_ASSIGN(string, tag, tag_length);
-
- if (string.start == string.end) {
- return yaml_emitter_set_emitter_error(emitter,
- "tag value must not be empty");
- }
-
- for (tag_directive = emitter->tag_directives.start;
- tag_directive != emitter->tag_directives.top; tag_directive ++) {
- size_t prefix_length = strlen((char *)tag_directive->prefix);
- if (prefix_length < (size_t)(string.end - string.start)
- && strncmp((char *)tag_directive->prefix, (char *)string.start,
- prefix_length) == 0)
- {
- emitter->tag_data.handle = tag_directive->handle;
- emitter->tag_data.handle_length =
- strlen((char *)tag_directive->handle);
- emitter->tag_data.suffix = string.start + prefix_length;
- emitter->tag_data.suffix_length =
- (string.end - string.start) - prefix_length;
- return 1;
- }
- }
-
- emitter->tag_data.suffix = string.start;
- emitter->tag_data.suffix_length = string.end - string.start;
-
- return 1;
-}
-
-/*
- * Check if a scalar is valid.
- */
-
-static int
-yaml_emitter_analyze_scalar(yaml_emitter_t *emitter,
- yaml_char_t *value, size_t length)
-{
- yaml_string_t string;
-
- int block_indicators = 0;
- int flow_indicators = 0;
- int line_breaks = 0;
- int special_characters = 0;
-
- int leading_space = 0;
- int leading_break = 0;
- int trailing_space = 0;
- int trailing_break = 0;
- int break_space = 0;
- int space_break = 0;
-
- int preceded_by_whitespace = 0;
- int followed_by_whitespace = 0;
- int previous_space = 0;
- int previous_break = 0;
-
- STRING_ASSIGN(string, value, length);
-
- emitter->scalar_data.value = value;
- emitter->scalar_data.length = length;
-
- if (string.start == string.end)
- {
- emitter->scalar_data.multiline = 0;
- emitter->scalar_data.flow_plain_allowed = 0;
- emitter->scalar_data.block_plain_allowed = 1;
- emitter->scalar_data.single_quoted_allowed = 1;
- emitter->scalar_data.block_allowed = 0;
-
- return 1;
- }
-
- if ((CHECK_AT(string, '-', 0)
- && CHECK_AT(string, '-', 1)
- && CHECK_AT(string, '-', 2))
- || (CHECK_AT(string, '.', 0)
- && CHECK_AT(string, '.', 1)
- && CHECK_AT(string, '.', 2))) {
- block_indicators = 1;
- flow_indicators = 1;
- }
-
- preceded_by_whitespace = 1;
- followed_by_whitespace = IS_BLANKZ_AT(string, WIDTH(string));
-
- while (string.pointer != string.end)
- {
- if (string.start == string.pointer)
- {
- if (CHECK(string, '#') || CHECK(string, ',')
- || CHECK(string, '[') || CHECK(string, ']')
- || CHECK(string, '{') || CHECK(string, '}')
- || CHECK(string, '&') || CHECK(string, '*')
- || CHECK(string, '!') || CHECK(string, '|')
- || CHECK(string, '>') || CHECK(string, '\'')
- || CHECK(string, '"') || CHECK(string, '%')
- || CHECK(string, '@') || CHECK(string, '`')) {
- flow_indicators = 1;
- block_indicators = 1;
- }
-
- if (CHECK(string, '?') || CHECK(string, ':')) {
- flow_indicators = 1;
- if (followed_by_whitespace) {
- block_indicators = 1;
- }
- }
-
- if (CHECK(string, '-') && followed_by_whitespace) {
- flow_indicators = 1;
- block_indicators = 1;
- }
- }
- else
- {
- if (CHECK(string, ',') || CHECK(string, '?')
- || CHECK(string, '[') || CHECK(string, ']')
- || CHECK(string, '{') || CHECK(string, '}')) {
- flow_indicators = 1;
- }
-
- if (CHECK(string, ':')) {
- flow_indicators = 1;
- if (followed_by_whitespace) {
- block_indicators = 1;
- }
- }
-
- if (CHECK(string, '#') && preceded_by_whitespace) {
- flow_indicators = 1;
- block_indicators = 1;
- }
- }
-
- if (!IS_PRINTABLE(string)
- || (!IS_ASCII(string) && !emitter->unicode)) {
- special_characters = 1;
- }
-
- if (IS_BREAK(string)) {
- line_breaks = 1;
- }
-
- if (IS_SPACE(string))
- {
- if (string.start == string.pointer) {
- leading_space = 1;
- }
- if (string.pointer+WIDTH(string) == string.end) {
- trailing_space = 1;
- }
- if (previous_break) {
- break_space = 1;
- }
- previous_space = 1;
- previous_break = 0;
- }
- else if (IS_BREAK(string))
- {
- if (string.start == string.pointer) {
- leading_break = 1;
- }
- if (string.pointer+WIDTH(string) == string.end) {
- trailing_break = 1;
- }
- if (previous_space) {
- space_break = 1;
- }
- previous_space = 0;
- previous_break = 1;
- }
- else
- {
- previous_space = 0;
- previous_break = 0;
- }
-
- preceded_by_whitespace = IS_BLANKZ(string);
- MOVE(string);
- if (string.pointer != string.end) {
- followed_by_whitespace = IS_BLANKZ_AT(string, WIDTH(string));
- }
- }
-
- emitter->scalar_data.multiline = line_breaks;
-
- emitter->scalar_data.flow_plain_allowed = 1;
- emitter->scalar_data.block_plain_allowed = 1;
- emitter->scalar_data.single_quoted_allowed = 1;
- emitter->scalar_data.block_allowed = 1;
-
- if (leading_space || leading_break || trailing_space || trailing_break) {
- emitter->scalar_data.flow_plain_allowed = 0;
- emitter->scalar_data.block_plain_allowed = 0;
- }
-
- if (trailing_space) {
- emitter->scalar_data.block_allowed = 0;
- }
-
- if (break_space) {
- emitter->scalar_data.flow_plain_allowed = 0;
- emitter->scalar_data.block_plain_allowed = 0;
- emitter->scalar_data.single_quoted_allowed = 0;
- }
-
- if (space_break || special_characters) {
- emitter->scalar_data.flow_plain_allowed = 0;
- emitter->scalar_data.block_plain_allowed = 0;
- emitter->scalar_data.single_quoted_allowed = 0;
- emitter->scalar_data.block_allowed = 0;
- }
-
- if (line_breaks) {
- emitter->scalar_data.flow_plain_allowed = 0;
- emitter->scalar_data.block_plain_allowed = 0;
- }
-
- if (flow_indicators) {
- emitter->scalar_data.flow_plain_allowed = 0;
- }
-
- if (block_indicators) {
- emitter->scalar_data.block_plain_allowed = 0;
- }
-
- return 1;
-}
-
-/*
- * Check if the event data is valid.
- */
-
-static int
-yaml_emitter_analyze_event(yaml_emitter_t *emitter,
- yaml_event_t *event)
-{
- emitter->anchor_data.anchor = NULL;
- emitter->anchor_data.anchor_length = 0;
- emitter->tag_data.handle = NULL;
- emitter->tag_data.handle_length = 0;
- emitter->tag_data.suffix = NULL;
- emitter->tag_data.suffix_length = 0;
- emitter->scalar_data.value = NULL;
- emitter->scalar_data.length = 0;
-
- switch (event->type)
- {
- case YAML_ALIAS_EVENT:
- if (!yaml_emitter_analyze_anchor(emitter,
- event->data.alias.anchor, 1))
- return 0;
- return 1;
-
- case YAML_SCALAR_EVENT:
- if (event->data.scalar.anchor) {
- if (!yaml_emitter_analyze_anchor(emitter,
- event->data.scalar.anchor, 0))
- return 0;
- }
- if (event->data.scalar.tag && (emitter->canonical ||
- (!event->data.scalar.plain_implicit
- && !event->data.scalar.quoted_implicit))) {
- if (!yaml_emitter_analyze_tag(emitter, event->data.scalar.tag))
- return 0;
- }
- if (!yaml_emitter_analyze_scalar(emitter,
- event->data.scalar.value, event->data.scalar.length))
- return 0;
- return 1;
-
- case YAML_SEQUENCE_START_EVENT:
- if (event->data.sequence_start.anchor) {
- if (!yaml_emitter_analyze_anchor(emitter,
- event->data.sequence_start.anchor, 0))
- return 0;
- }
- if (event->data.sequence_start.tag && (emitter->canonical ||
- !event->data.sequence_start.implicit)) {
- if (!yaml_emitter_analyze_tag(emitter,
- event->data.sequence_start.tag))
- return 0;
- }
- return 1;
-
- case YAML_MAPPING_START_EVENT:
- if (event->data.mapping_start.anchor) {
- if (!yaml_emitter_analyze_anchor(emitter,
- event->data.mapping_start.anchor, 0))
- return 0;
- }
- if (event->data.mapping_start.tag && (emitter->canonical ||
- !event->data.mapping_start.implicit)) {
- if (!yaml_emitter_analyze_tag(emitter,
- event->data.mapping_start.tag))
- return 0;
- }
- return 1;
-
- default:
- return 1;
- }
-}
-
-/*
- * Write the BOM character.
- */
-
-static int
-yaml_emitter_write_bom(yaml_emitter_t *emitter)
-{
- if (!FLUSH(emitter)) return 0;
-
- *(emitter->buffer.pointer++) = (yaml_char_t) '\xEF';
- *(emitter->buffer.pointer++) = (yaml_char_t) '\xBB';
- *(emitter->buffer.pointer++) = (yaml_char_t) '\xBF';
-
- return 1;
-}
-
-static int
-yaml_emitter_write_indent(yaml_emitter_t *emitter)
-{
- int indent = (emitter->indent >= 0) ? emitter->indent : 0;
-
- if (!emitter->indention || emitter->column > indent
- || (emitter->column == indent && !emitter->whitespace)) {
- if (!PUT_BREAK(emitter)) return 0;
- }
-
- while (emitter->column < indent) {
- if (!PUT(emitter, ' ')) return 0;
- }
-
- emitter->whitespace = 1;
- emitter->indention = 1;
-
- return 1;
-}
-
-static int
-yaml_emitter_write_indicator(yaml_emitter_t *emitter,
- const char *indicator, int need_whitespace,
- int is_whitespace, int is_indention)
-{
- size_t indicator_length;
- yaml_string_t string;
-
- indicator_length = strlen(indicator);
- STRING_ASSIGN(string, (yaml_char_t *)indicator, indicator_length);
-
- if (need_whitespace && !emitter->whitespace) {
- if (!PUT(emitter, ' ')) return 0;
- }
-
- while (string.pointer != string.end) {
- if (!WRITE(emitter, string)) return 0;
- }
-
- emitter->whitespace = is_whitespace;
- emitter->indention = (emitter->indention && is_indention);
-
- return 1;
-}
-
-static int
-yaml_emitter_write_anchor(yaml_emitter_t *emitter,
- yaml_char_t *value, size_t length)
-{
- yaml_string_t string;
- STRING_ASSIGN(string, value, length);
-
- while (string.pointer != string.end) {
- if (!WRITE(emitter, string)) return 0;
- }
-
- emitter->whitespace = 0;
- emitter->indention = 0;
-
- return 1;
-}
-
-static int
-yaml_emitter_write_tag_handle(yaml_emitter_t *emitter,
- yaml_char_t *value, size_t length)
-{
- yaml_string_t string;
- STRING_ASSIGN(string, value, length);
-
- if (!emitter->whitespace) {
- if (!PUT(emitter, ' ')) return 0;
- }
-
- while (string.pointer != string.end) {
- if (!WRITE(emitter, string)) return 0;
- }
-
- emitter->whitespace = 0;
- emitter->indention = 0;
-
- return 1;
-}
-
-static int
-yaml_emitter_write_tag_content(yaml_emitter_t *emitter,
- yaml_char_t *value, size_t length,
- int need_whitespace)
-{
- yaml_string_t string;
- STRING_ASSIGN(string, value, length);
-
- if (need_whitespace && !emitter->whitespace) {
- if (!PUT(emitter, ' ')) return 0;
- }
-
- while (string.pointer != string.end) {
- if (IS_ALPHA(string)
- || CHECK(string, ';') || CHECK(string, '/')
- || CHECK(string, '?') || CHECK(string, ':')
- || CHECK(string, '@') || CHECK(string, '&')
- || CHECK(string, '=') || CHECK(string, '+')
- || CHECK(string, '$') || CHECK(string, ',')
- || CHECK(string, '_') || CHECK(string, '.')
- || CHECK(string, '~') || CHECK(string, '*')
- || CHECK(string, '\'') || CHECK(string, '(')
- || CHECK(string, ')') || CHECK(string, '[')
- || CHECK(string, ']')) {
- if (!WRITE(emitter, string)) return 0;
- }
- else {
- int width = WIDTH(string);
- unsigned int value;
- while (width --) {
- value = *(string.pointer++);
- if (!PUT(emitter, '%')) return 0;
- if (!PUT(emitter, (value >> 4)
- + ((value >> 4) < 10 ? '0' : 'A' - 10)))
- return 0;
- if (!PUT(emitter, (value & 0x0F)
- + ((value & 0x0F) < 10 ? '0' : 'A' - 10)))
- return 0;
- }
- }
- }
-
- emitter->whitespace = 0;
- emitter->indention = 0;
-
- return 1;
-}
-
-static int
-yaml_emitter_write_plain_scalar(yaml_emitter_t *emitter,
- yaml_char_t *value, size_t length, int allow_breaks)
-{
- yaml_string_t string;
- int spaces = 0;
- int breaks = 0;
-
- STRING_ASSIGN(string, value, length);
-
- /**
- * Avoid trailing spaces for empty values in block mode.
- * In flow mode, we still want the space to prevent ambiguous things
- * like {a:}.
- * Currently, the emitter forbids any plain empty scalar in flow mode
- * (e.g. it outputs {a: ''} instead), so emitter->flow_level will
- * never be true here.
- * But if the emitter is ever changed to allow emitting empty values,
- * the check for flow_level is already here.
- */
- if (!emitter->whitespace && (length || emitter->flow_level)) {
- if (!PUT(emitter, ' ')) return 0;
- }
-
- while (string.pointer != string.end)
- {
- if (IS_SPACE(string))
- {
- if (allow_breaks && !spaces
- && emitter->column > emitter->best_width
- && !IS_SPACE_AT(string, 1)) {
- if (!yaml_emitter_write_indent(emitter)) return 0;
- MOVE(string);
- }
- else {
- if (!WRITE(emitter, string)) return 0;
- }
- spaces = 1;
- }
- else if (IS_BREAK(string))
- {
- if (!breaks && CHECK(string, '\n')) {
- if (!PUT_BREAK(emitter)) return 0;
- }
- if (!WRITE_BREAK(emitter, string)) return 0;
- emitter->indention = 1;
- breaks = 1;
- }
- else
- {
- if (breaks) {
- if (!yaml_emitter_write_indent(emitter)) return 0;
- }
- if (!WRITE(emitter, string)) return 0;
- emitter->indention = 0;
- spaces = 0;
- breaks = 0;
- }
- }
-
- emitter->whitespace = 0;
- emitter->indention = 0;
-
- return 1;
-}
-
-static int
-yaml_emitter_write_single_quoted_scalar(yaml_emitter_t *emitter,
- yaml_char_t *value, size_t length, int allow_breaks)
-{
- yaml_string_t string;
- int spaces = 0;
- int breaks = 0;
-
- STRING_ASSIGN(string, value, length);
-
- if (!yaml_emitter_write_indicator(emitter, "'", 1, 0, 0))
- return 0;
-
- while (string.pointer != string.end)
- {
- if (IS_SPACE(string))
- {
- if (allow_breaks && !spaces
- && emitter->column > emitter->best_width
- && string.pointer != string.start
- && string.pointer != string.end - 1
- && !IS_SPACE_AT(string, 1)) {
- if (!yaml_emitter_write_indent(emitter)) return 0;
- MOVE(string);
- }
- else {
- if (!WRITE(emitter, string)) return 0;
- }
- spaces = 1;
- }
- else if (IS_BREAK(string))
- {
- if (!breaks && CHECK(string, '\n')) {
- if (!PUT_BREAK(emitter)) return 0;
- }
- if (!WRITE_BREAK(emitter, string)) return 0;
- emitter->indention = 1;
- breaks = 1;
- }
- else
- {
- if (breaks) {
- if (!yaml_emitter_write_indent(emitter)) return 0;
- }
- if (CHECK(string, '\'')) {
- if (!PUT(emitter, '\'')) return 0;
- }
- if (!WRITE(emitter, string)) return 0;
- emitter->indention = 0;
- spaces = 0;
- breaks = 0;
- }
- }
-
- if (breaks)
- if (!yaml_emitter_write_indent(emitter)) return 0;
-
- if (!yaml_emitter_write_indicator(emitter, "'", 0, 0, 0))
- return 0;
-
- emitter->whitespace = 0;
- emitter->indention = 0;
-
- return 1;
-}
-
-static int
-yaml_emitter_write_double_quoted_scalar(yaml_emitter_t *emitter,
- yaml_char_t *value, size_t length, int allow_breaks)
-{
- yaml_string_t string;
- int spaces = 0;
-
- STRING_ASSIGN(string, value, length);
-
- if (!yaml_emitter_write_indicator(emitter, "\"", 1, 0, 0))
- return 0;
-
- while (string.pointer != string.end)
- {
- if (!IS_PRINTABLE(string) || (!emitter->unicode && !IS_ASCII(string))
- || IS_BOM(string) || IS_BREAK(string)
- || CHECK(string, '"') || CHECK(string, '\\'))
- {
- unsigned char octet;
- unsigned int width;
- unsigned int value;
- int k;
-
- octet = string.pointer[0];
- width = (octet & 0x80) == 0x00 ? 1 :
- (octet & 0xE0) == 0xC0 ? 2 :
- (octet & 0xF0) == 0xE0 ? 3 :
- (octet & 0xF8) == 0xF0 ? 4 : 0;
- value = (octet & 0x80) == 0x00 ? octet & 0x7F :
- (octet & 0xE0) == 0xC0 ? octet & 0x1F :
- (octet & 0xF0) == 0xE0 ? octet & 0x0F :
- (octet & 0xF8) == 0xF0 ? octet & 0x07 : 0;
- for (k = 1; k < (int)width; k ++) {
- octet = string.pointer[k];
- value = (value << 6) + (octet & 0x3F);
- }
- string.pointer += width;
-
- if (!PUT(emitter, '\\')) return 0;
-
- switch (value)
- {
- case 0x00:
- if (!PUT(emitter, '0')) return 0;
- break;
-
- case 0x07:
- if (!PUT(emitter, 'a')) return 0;
- break;
-
- case 0x08:
- if (!PUT(emitter, 'b')) return 0;
- break;
-
- case 0x09:
- if (!PUT(emitter, 't')) return 0;
- break;
-
- case 0x0A:
- if (!PUT(emitter, 'n')) return 0;
- break;
-
- case 0x0B:
- if (!PUT(emitter, 'v')) return 0;
- break;
-
- case 0x0C:
- if (!PUT(emitter, 'f')) return 0;
- break;
-
- case 0x0D:
- if (!PUT(emitter, 'r')) return 0;
- break;
-
- case 0x1B:
- if (!PUT(emitter, 'e')) return 0;
- break;
-
- case 0x22:
- if (!PUT(emitter, '\"')) return 0;
- break;
-
- case 0x5C:
- if (!PUT(emitter, '\\')) return 0;
- break;
-
- case 0x85:
- if (!PUT(emitter, 'N')) return 0;
- break;
-
- case 0xA0:
- if (!PUT(emitter, '_')) return 0;
- break;
-
- case 0x2028:
- if (!PUT(emitter, 'L')) return 0;
- break;
-
- case 0x2029:
- if (!PUT(emitter, 'P')) return 0;
- break;
-
- default:
- if (value <= 0xFF) {
- if (!PUT(emitter, 'x')) return 0;
- width = 2;
- }
- else if (value <= 0xFFFF) {
- if (!PUT(emitter, 'u')) return 0;
- width = 4;
- }
- else {
- if (!PUT(emitter, 'U')) return 0;
- width = 8;
- }
- for (k = (width-1)*4; k >= 0; k -= 4) {
- int digit = (value >> k) & 0x0F;
- if (!PUT(emitter, digit + (digit < 10 ? '0' : 'A'-10)))
- return 0;
- }
- }
- spaces = 0;
- }
- else if (IS_SPACE(string))
- {
- if (allow_breaks && !spaces
- && emitter->column > emitter->best_width
- && string.pointer != string.start
- && string.pointer != string.end - 1) {
- if (!yaml_emitter_write_indent(emitter)) return 0;
- if (IS_SPACE_AT(string, 1)) {
- if (!PUT(emitter, '\\')) return 0;
- }
- MOVE(string);
- }
- else {
- if (!WRITE(emitter, string)) return 0;
- }
- spaces = 1;
- }
- else
- {
- if (!WRITE(emitter, string)) return 0;
- spaces = 0;
- }
- }
-
- if (!yaml_emitter_write_indicator(emitter, "\"", 0, 0, 0))
- return 0;
-
- emitter->whitespace = 0;
- emitter->indention = 0;
-
- return 1;
-}
-
-static int
-yaml_emitter_write_block_scalar_hints(yaml_emitter_t *emitter,
- yaml_string_t string)
-{
- char indent_hint[2];
- const char *chomp_hint = NULL;
-
- if (IS_SPACE(string) || IS_BREAK(string))
- {
- indent_hint[0] = '0' + (char)emitter->best_indent;
- indent_hint[1] = '\0';
- if (!yaml_emitter_write_indicator(emitter, indent_hint, 0, 0, 0))
- return 0;
- }
-
- emitter->open_ended = 0;
-
- string.pointer = string.end;
- if (string.start == string.pointer)
- {
- chomp_hint = "-";
- }
- else
- {
- do {
- string.pointer --;
- } while ((*string.pointer & 0xC0) == 0x80);
- if (!IS_BREAK(string))
- {
- chomp_hint = "-";
- }
- else if (string.start == string.pointer)
- {
- chomp_hint = "+";
- emitter->open_ended = 2;
- }
- else
- {
- do {
- string.pointer --;
- } while ((*string.pointer & 0xC0) == 0x80);
- if (IS_BREAK(string))
- {
- chomp_hint = "+";
- emitter->open_ended = 2;
- }
- }
- }
-
- if (chomp_hint)
- {
- if (!yaml_emitter_write_indicator(emitter, chomp_hint, 0, 0, 0))
- return 0;
- }
-
- return 1;
-}
-
-static int
-yaml_emitter_write_literal_scalar(yaml_emitter_t *emitter,
- yaml_char_t *value, size_t length)
-{
- yaml_string_t string;
- int breaks = 1;
-
- STRING_ASSIGN(string, value, length);
-
- if (!yaml_emitter_write_indicator(emitter, "|", 1, 0, 0))
- return 0;
- if (!yaml_emitter_write_block_scalar_hints(emitter, string))
- return 0;
- if (!PUT_BREAK(emitter)) return 0;
- emitter->indention = 1;
- emitter->whitespace = 1;
-
- while (string.pointer != string.end)
- {
- if (IS_BREAK(string))
- {
- if (!WRITE_BREAK(emitter, string)) return 0;
- emitter->indention = 1;
- breaks = 1;
- }
- else
- {
- if (breaks) {
- if (!yaml_emitter_write_indent(emitter)) return 0;
- }
- if (!WRITE(emitter, string)) return 0;
- emitter->indention = 0;
- breaks = 0;
- }
- }
-
- return 1;
-}
-
-static int
-yaml_emitter_write_folded_scalar(yaml_emitter_t *emitter,
- yaml_char_t *value, size_t length)
-{
- yaml_string_t string;
- int breaks = 1;
- int leading_spaces = 1;
-
- STRING_ASSIGN(string, value, length);
-
- if (!yaml_emitter_write_indicator(emitter, ">", 1, 0, 0))
- return 0;
- if (!yaml_emitter_write_block_scalar_hints(emitter, string))
- return 0;
- if (!PUT_BREAK(emitter)) return 0;
- emitter->indention = 1;
- emitter->whitespace = 1;
-
- while (string.pointer != string.end)
- {
- if (IS_BREAK(string))
- {
- if (!breaks && !leading_spaces && CHECK(string, '\n')) {
- int k = 0;
- while (IS_BREAK_AT(string, k)) {
- k += WIDTH_AT(string, k);
- }
- if (!IS_BLANKZ_AT(string, k)) {
- if (!PUT_BREAK(emitter)) return 0;
- }
- }
- if (!WRITE_BREAK(emitter, string)) return 0;
- emitter->indention = 1;
- breaks = 1;
- }
- else
- {
- if (breaks) {
- if (!yaml_emitter_write_indent(emitter)) return 0;
- leading_spaces = IS_BLANK(string);
- }
- if (!breaks && IS_SPACE(string) && !IS_SPACE_AT(string, 1)
- && emitter->column > emitter->best_width) {
- if (!yaml_emitter_write_indent(emitter)) return 0;
- MOVE(string);
- }
- else {
- if (!WRITE(emitter, string)) return 0;
- }
- emitter->indention = 0;
- breaks = 0;
- }
- }
-
- return 1;
-}
diff --git a/ext/psych/yaml/loader.c b/ext/psych/yaml/loader.c
deleted file mode 100644
index bcf3aee8cb..0000000000
--- a/ext/psych/yaml/loader.c
+++ /dev/null
@@ -1,544 +0,0 @@
-
-#include "yaml_private.h"
-
-/*
- * API functions.
- */
-
-YAML_DECLARE(int)
-yaml_parser_load(yaml_parser_t *parser, yaml_document_t *document);
-
-/*
- * Error handling.
- */
-
-static int
-yaml_parser_set_composer_error(yaml_parser_t *parser,
- const char *problem, yaml_mark_t problem_mark);
-
-static int
-yaml_parser_set_composer_error_context(yaml_parser_t *parser,
- const char *context, yaml_mark_t context_mark,
- const char *problem, yaml_mark_t problem_mark);
-
-
-/*
- * Alias handling.
- */
-
-static int
-yaml_parser_register_anchor(yaml_parser_t *parser,
- int index, yaml_char_t *anchor);
-
-/*
- * Clean up functions.
- */
-
-static void
-yaml_parser_delete_aliases(yaml_parser_t *parser);
-
-/*
- * Document loading context.
- */
-struct loader_ctx {
- int *start;
- int *end;
- int *top;
-};
-
-/*
- * Composer functions.
- */
-static int
-yaml_parser_load_nodes(yaml_parser_t *parser, struct loader_ctx *ctx);
-
-static int
-yaml_parser_load_document(yaml_parser_t *parser, yaml_event_t *event);
-
-static int
-yaml_parser_load_alias(yaml_parser_t *parser, yaml_event_t *event,
- struct loader_ctx *ctx);
-
-static int
-yaml_parser_load_scalar(yaml_parser_t *parser, yaml_event_t *event,
- struct loader_ctx *ctx);
-
-static int
-yaml_parser_load_sequence(yaml_parser_t *parser, yaml_event_t *event,
- struct loader_ctx *ctx);
-
-static int
-yaml_parser_load_mapping(yaml_parser_t *parser, yaml_event_t *event,
- struct loader_ctx *ctx);
-
-static int
-yaml_parser_load_sequence_end(yaml_parser_t *parser, yaml_event_t *event,
- struct loader_ctx *ctx);
-
-static int
-yaml_parser_load_mapping_end(yaml_parser_t *parser, yaml_event_t *event,
- struct loader_ctx *ctx);
-
-/*
- * Load the next document of the stream.
- */
-
-YAML_DECLARE(int)
-yaml_parser_load(yaml_parser_t *parser, yaml_document_t *document)
-{
- yaml_event_t event;
-
- assert(parser); /* Non-NULL parser object is expected. */
- assert(document); /* Non-NULL document object is expected. */
-
- memset(document, 0, sizeof(yaml_document_t));
- if (!STACK_INIT(parser, document->nodes, yaml_node_t*))
- goto error;
-
- if (!parser->stream_start_produced) {
- if (!yaml_parser_parse(parser, &event)) goto error;
- assert(event.type == YAML_STREAM_START_EVENT);
- /* STREAM-START is expected. */
- }
-
- if (parser->stream_end_produced) {
- return 1;
- }
-
- if (!yaml_parser_parse(parser, &event)) goto error;
- if (event.type == YAML_STREAM_END_EVENT) {
- return 1;
- }
-
- if (!STACK_INIT(parser, parser->aliases, yaml_alias_data_t*))
- goto error;
-
- parser->document = document;
-
- if (!yaml_parser_load_document(parser, &event)) goto error;
-
- yaml_parser_delete_aliases(parser);
- parser->document = NULL;
-
- return 1;
-
-error:
-
- yaml_parser_delete_aliases(parser);
- yaml_document_delete(document);
- parser->document = NULL;
-
- return 0;
-}
-
-/*
- * Set composer error.
- */
-
-static int
-yaml_parser_set_composer_error(yaml_parser_t *parser,
- const char *problem, yaml_mark_t problem_mark)
-{
- parser->error = YAML_COMPOSER_ERROR;
- parser->problem = problem;
- parser->problem_mark = problem_mark;
-
- return 0;
-}
-
-/*
- * Set composer error with context.
- */
-
-static int
-yaml_parser_set_composer_error_context(yaml_parser_t *parser,
- const char *context, yaml_mark_t context_mark,
- const char *problem, yaml_mark_t problem_mark)
-{
- parser->error = YAML_COMPOSER_ERROR;
- parser->context = context;
- parser->context_mark = context_mark;
- parser->problem = problem;
- parser->problem_mark = problem_mark;
-
- return 0;
-}
-
-/*
- * Delete the stack of aliases.
- */
-
-static void
-yaml_parser_delete_aliases(yaml_parser_t *parser)
-{
- while (!STACK_EMPTY(parser, parser->aliases)) {
- yaml_free(POP(parser, parser->aliases).anchor);
- }
- STACK_DEL(parser, parser->aliases);
-}
-
-/*
- * Compose a document object.
- */
-
-static int
-yaml_parser_load_document(yaml_parser_t *parser, yaml_event_t *event)
-{
- struct loader_ctx ctx = { NULL, NULL, NULL };
-
- assert(event->type == YAML_DOCUMENT_START_EVENT);
- /* DOCUMENT-START is expected. */
-
- parser->document->version_directive
- = event->data.document_start.version_directive;
- parser->document->tag_directives.start
- = event->data.document_start.tag_directives.start;
- parser->document->tag_directives.end
- = event->data.document_start.tag_directives.end;
- parser->document->start_implicit
- = event->data.document_start.implicit;
- parser->document->start_mark = event->start_mark;
-
- if (!STACK_INIT(parser, ctx, int*)) return 0;
- if (!yaml_parser_load_nodes(parser, &ctx)) {
- STACK_DEL(parser, ctx);
- return 0;
- }
- STACK_DEL(parser, ctx);
-
- return 1;
-}
-
-/*
- * Compose a node tree.
- */
-
-static int
-yaml_parser_load_nodes(yaml_parser_t *parser, struct loader_ctx *ctx)
-{
- yaml_event_t event;
-
- do {
- if (!yaml_parser_parse(parser, &event)) return 0;
-
- switch (event.type) {
- case YAML_ALIAS_EVENT:
- if (!yaml_parser_load_alias(parser, &event, ctx)) return 0;
- break;
- case YAML_SCALAR_EVENT:
- if (!yaml_parser_load_scalar(parser, &event, ctx)) return 0;
- break;
- case YAML_SEQUENCE_START_EVENT:
- if (!yaml_parser_load_sequence(parser, &event, ctx)) return 0;
- break;
- case YAML_SEQUENCE_END_EVENT:
- if (!yaml_parser_load_sequence_end(parser, &event, ctx))
- return 0;
- break;
- case YAML_MAPPING_START_EVENT:
- if (!yaml_parser_load_mapping(parser, &event, ctx)) return 0;
- break;
- case YAML_MAPPING_END_EVENT:
- if (!yaml_parser_load_mapping_end(parser, &event, ctx))
- return 0;
- break;
- default:
- assert(0); /* Could not happen. */
- return 0;
- case YAML_DOCUMENT_END_EVENT:
- break;
- }
- } while (event.type != YAML_DOCUMENT_END_EVENT);
-
- parser->document->end_implicit = event.data.document_end.implicit;
- parser->document->end_mark = event.end_mark;
-
- return 1;
-}
-
-/*
- * Add an anchor.
- */
-
-static int
-yaml_parser_register_anchor(yaml_parser_t *parser,
- int index, yaml_char_t *anchor)
-{
- yaml_alias_data_t data;
- yaml_alias_data_t *alias_data;
-
- if (!anchor) return 1;
-
- data.anchor = anchor;
- data.index = index;
- data.mark = parser->document->nodes.start[index-1].start_mark;
-
- for (alias_data = parser->aliases.start;
- alias_data != parser->aliases.top; alias_data ++) {
- if (strcmp((char *)alias_data->anchor, (char *)anchor) == 0) {
- yaml_free(anchor);
- return yaml_parser_set_composer_error_context(parser,
- "found duplicate anchor; first occurrence",
- alias_data->mark, "second occurrence", data.mark);
- }
- }
-
- if (!PUSH(parser, parser->aliases, data)) {
- yaml_free(anchor);
- return 0;
- }
-
- return 1;
-}
-
-/*
- * Compose node into its parent in the stree.
- */
-
-static int
-yaml_parser_load_node_add(yaml_parser_t *parser, struct loader_ctx *ctx,
- int index)
-{
- struct yaml_node_s *parent;
- int parent_index;
-
- if (STACK_EMPTY(parser, *ctx)) {
- /* This is the root node, there's no tree to add it to. */
- return 1;
- }
-
- parent_index = *((*ctx).top - 1);
- parent = &parser->document->nodes.start[parent_index-1];
-
- switch (parent->type) {
- case YAML_SEQUENCE_NODE:
- if (!STACK_LIMIT(parser, parent->data.sequence.items, INT_MAX-1))
- return 0;
- if (!PUSH(parser, parent->data.sequence.items, index))
- return 0;
- break;
- case YAML_MAPPING_NODE: {
- yaml_node_pair_t pair;
- if (!STACK_EMPTY(parser, parent->data.mapping.pairs)) {
- yaml_node_pair_t *p = parent->data.mapping.pairs.top - 1;
- if (p->key != 0 && p->value == 0) {
- p->value = index;
- break;
- }
- }
-
- pair.key = index;
- pair.value = 0;
- if (!STACK_LIMIT(parser, parent->data.mapping.pairs, INT_MAX-1))
- return 0;
- if (!PUSH(parser, parent->data.mapping.pairs, pair))
- return 0;
-
- break;
- }
- default:
- assert(0); /* Could not happen. */
- return 0;
- }
- return 1;
-}
-
-/*
- * Compose a node corresponding to an alias.
- */
-
-static int
-yaml_parser_load_alias(yaml_parser_t *parser, yaml_event_t *event,
- struct loader_ctx *ctx)
-{
- yaml_char_t *anchor = event->data.alias.anchor;
- yaml_alias_data_t *alias_data;
-
- for (alias_data = parser->aliases.start;
- alias_data != parser->aliases.top; alias_data ++) {
- if (strcmp((char *)alias_data->anchor, (char *)anchor) == 0) {
- yaml_free(anchor);
- return yaml_parser_load_node_add(parser, ctx, alias_data->index);
- }
- }
-
- yaml_free(anchor);
- return yaml_parser_set_composer_error(parser, "found undefined alias",
- event->start_mark);
-}
-
-/*
- * Compose a scalar node.
- */
-
-static int
-yaml_parser_load_scalar(yaml_parser_t *parser, yaml_event_t *event,
- struct loader_ctx *ctx)
-{
- yaml_node_t node;
- int index;
- yaml_char_t *tag = event->data.scalar.tag;
-
- if (!STACK_LIMIT(parser, parser->document->nodes, INT_MAX-1)) goto error;
-
- if (!tag || strcmp((char *)tag, "!") == 0) {
- yaml_free(tag);
- tag = yaml_strdup((yaml_char_t *)YAML_DEFAULT_SCALAR_TAG);
- if (!tag) goto error;
- }
-
- SCALAR_NODE_INIT(node, tag, event->data.scalar.value,
- event->data.scalar.length, event->data.scalar.style,
- event->start_mark, event->end_mark);
-
- if (!PUSH(parser, parser->document->nodes, node)) goto error;
-
- index = (int)(parser->document->nodes.top - parser->document->nodes.start);
-
- if (!yaml_parser_register_anchor(parser, index,
- event->data.scalar.anchor)) return 0;
-
- return yaml_parser_load_node_add(parser, ctx, index);
-
-error:
- yaml_free(tag);
- yaml_free(event->data.scalar.anchor);
- yaml_free(event->data.scalar.value);
- return 0;
-}
-
-/*
- * Compose a sequence node.
- */
-
-static int
-yaml_parser_load_sequence(yaml_parser_t *parser, yaml_event_t *event,
- struct loader_ctx *ctx)
-{
- yaml_node_t node;
- struct {
- yaml_node_item_t *start;
- yaml_node_item_t *end;
- yaml_node_item_t *top;
- } items = { NULL, NULL, NULL };
- int index;
- yaml_char_t *tag = event->data.sequence_start.tag;
-
- if (!STACK_LIMIT(parser, parser->document->nodes, INT_MAX-1)) goto error;
-
- if (!tag || strcmp((char *)tag, "!") == 0) {
- yaml_free(tag);
- tag = yaml_strdup((yaml_char_t *)YAML_DEFAULT_SEQUENCE_TAG);
- if (!tag) goto error;
- }
-
- if (!STACK_INIT(parser, items, yaml_node_item_t*)) goto error;
-
- SEQUENCE_NODE_INIT(node, tag, items.start, items.end,
- event->data.sequence_start.style,
- event->start_mark, event->end_mark);
-
- if (!PUSH(parser, parser->document->nodes, node)) goto error;
-
- index = (int)(parser->document->nodes.top - parser->document->nodes.start);
-
- if (!yaml_parser_register_anchor(parser, index,
- event->data.sequence_start.anchor)) return 0;
-
- if (!yaml_parser_load_node_add(parser, ctx, index)) return 0;
-
- if (!STACK_LIMIT(parser, *ctx, INT_MAX-1)) return 0;
- if (!PUSH(parser, *ctx, index)) return 0;
-
- return 1;
-
-error:
- yaml_free(tag);
- yaml_free(event->data.sequence_start.anchor);
- return 0;
-}
-
-static int
-yaml_parser_load_sequence_end(yaml_parser_t *parser, yaml_event_t *event,
- struct loader_ctx *ctx)
-{
- int index;
-
- assert(((*ctx).top - (*ctx).start) > 0);
-
- index = *((*ctx).top - 1);
- assert(parser->document->nodes.start[index-1].type == YAML_SEQUENCE_NODE);
- parser->document->nodes.start[index-1].end_mark = event->end_mark;
-
- (void)POP(parser, *ctx);
-
- return 1;
-}
-
-/*
- * Compose a mapping node.
- */
-
-static int
-yaml_parser_load_mapping(yaml_parser_t *parser, yaml_event_t *event,
- struct loader_ctx *ctx)
-{
- yaml_node_t node;
- struct {
- yaml_node_pair_t *start;
- yaml_node_pair_t *end;
- yaml_node_pair_t *top;
- } pairs = { NULL, NULL, NULL };
- int index;
- yaml_char_t *tag = event->data.mapping_start.tag;
-
- if (!STACK_LIMIT(parser, parser->document->nodes, INT_MAX-1)) goto error;
-
- if (!tag || strcmp((char *)tag, "!") == 0) {
- yaml_free(tag);
- tag = yaml_strdup((yaml_char_t *)YAML_DEFAULT_MAPPING_TAG);
- if (!tag) goto error;
- }
-
- if (!STACK_INIT(parser, pairs, yaml_node_pair_t*)) goto error;
-
- MAPPING_NODE_INIT(node, tag, pairs.start, pairs.end,
- event->data.mapping_start.style,
- event->start_mark, event->end_mark);
-
- if (!PUSH(parser, parser->document->nodes, node)) goto error;
-
- index = (int)(parser->document->nodes.top - parser->document->nodes.start);
-
- if (!yaml_parser_register_anchor(parser, index,
- event->data.mapping_start.anchor)) return 0;
-
- if (!yaml_parser_load_node_add(parser, ctx, index)) return 0;
-
- if (!STACK_LIMIT(parser, *ctx, INT_MAX-1)) return 0;
- if (!PUSH(parser, *ctx, index)) return 0;
-
- return 1;
-
-error:
- yaml_free(tag);
- yaml_free(event->data.mapping_start.anchor);
- return 0;
-}
-
-static int
-yaml_parser_load_mapping_end(yaml_parser_t *parser, yaml_event_t *event,
- struct loader_ctx *ctx)
-{
- int index;
-
- assert(((*ctx).top - (*ctx).start) > 0);
-
- index = *((*ctx).top - 1);
- assert(parser->document->nodes.start[index-1].type == YAML_MAPPING_NODE);
- parser->document->nodes.start[index-1].end_mark = event->end_mark;
-
- (void)POP(parser, *ctx);
-
- return 1;
-}
diff --git a/ext/psych/yaml/parser.c b/ext/psych/yaml/parser.c
deleted file mode 100644
index ec2f8d3e05..0000000000
--- a/ext/psych/yaml/parser.c
+++ /dev/null
@@ -1,1375 +0,0 @@
-
-/*
- * The parser implements the following grammar:
- *
- * stream ::= STREAM-START implicit_document? explicit_document* STREAM-END
- * implicit_document ::= block_node DOCUMENT-END*
- * explicit_document ::= DIRECTIVE* DOCUMENT-START block_node? DOCUMENT-END*
- * block_node_or_indentless_sequence ::=
- * ALIAS
- * | properties (block_content | indentless_block_sequence)?
- * | block_content
- * | indentless_block_sequence
- * block_node ::= ALIAS
- * | properties block_content?
- * | block_content
- * flow_node ::= ALIAS
- * | properties flow_content?
- * | flow_content
- * properties ::= TAG ANCHOR? | ANCHOR TAG?
- * block_content ::= block_collection | flow_collection | SCALAR
- * flow_content ::= flow_collection | SCALAR
- * block_collection ::= block_sequence | block_mapping
- * flow_collection ::= flow_sequence | flow_mapping
- * block_sequence ::= BLOCK-SEQUENCE-START (BLOCK-ENTRY block_node?)* BLOCK-END
- * indentless_sequence ::= (BLOCK-ENTRY block_node?)+
- * block_mapping ::= BLOCK-MAPPING_START
- * ((KEY block_node_or_indentless_sequence?)?
- * (VALUE block_node_or_indentless_sequence?)?)*
- * BLOCK-END
- * flow_sequence ::= FLOW-SEQUENCE-START
- * (flow_sequence_entry FLOW-ENTRY)*
- * flow_sequence_entry?
- * FLOW-SEQUENCE-END
- * flow_sequence_entry ::= flow_node | KEY flow_node? (VALUE flow_node?)?
- * flow_mapping ::= FLOW-MAPPING-START
- * (flow_mapping_entry FLOW-ENTRY)*
- * flow_mapping_entry?
- * FLOW-MAPPING-END
- * flow_mapping_entry ::= flow_node | KEY flow_node? (VALUE flow_node?)?
- */
-
-#include "yaml_private.h"
-
-/*
- * Peek the next token in the token queue.
- */
-
-#define PEEK_TOKEN(parser) \
- ((parser->token_available || yaml_parser_fetch_more_tokens(parser)) ? \
- parser->tokens.head : NULL)
-
-/*
- * Remove the next token from the queue (must be called after PEEK_TOKEN).
- */
-
-#define SKIP_TOKEN(parser) \
- (parser->token_available = 0, \
- parser->tokens_parsed ++, \
- parser->stream_end_produced = \
- (parser->tokens.head->type == YAML_STREAM_END_TOKEN), \
- parser->tokens.head ++)
-
-/*
- * Public API declarations.
- */
-
-YAML_DECLARE(int)
-yaml_parser_parse(yaml_parser_t *parser, yaml_event_t *event);
-
-/*
- * Error handling.
- */
-
-static int
-yaml_parser_set_parser_error(yaml_parser_t *parser,
- const char *problem, yaml_mark_t problem_mark);
-
-static int
-yaml_parser_set_parser_error_context(yaml_parser_t *parser,
- const char *context, yaml_mark_t context_mark,
- const char *problem, yaml_mark_t problem_mark);
-
-/*
- * State functions.
- */
-
-static int
-yaml_parser_state_machine(yaml_parser_t *parser, yaml_event_t *event);
-
-static int
-yaml_parser_parse_stream_start(yaml_parser_t *parser, yaml_event_t *event);
-
-static int
-yaml_parser_parse_document_start(yaml_parser_t *parser, yaml_event_t *event,
- int implicit);
-
-static int
-yaml_parser_parse_document_content(yaml_parser_t *parser, yaml_event_t *event);
-
-static int
-yaml_parser_parse_document_end(yaml_parser_t *parser, yaml_event_t *event);
-
-static int
-yaml_parser_parse_node(yaml_parser_t *parser, yaml_event_t *event,
- int block, int indentless_sequence);
-
-static int
-yaml_parser_parse_block_sequence_entry(yaml_parser_t *parser,
- yaml_event_t *event, int first);
-
-static int
-yaml_parser_parse_indentless_sequence_entry(yaml_parser_t *parser,
- yaml_event_t *event);
-
-static int
-yaml_parser_parse_block_mapping_key(yaml_parser_t *parser,
- yaml_event_t *event, int first);
-
-static int
-yaml_parser_parse_block_mapping_value(yaml_parser_t *parser,
- yaml_event_t *event);
-
-static int
-yaml_parser_parse_flow_sequence_entry(yaml_parser_t *parser,
- yaml_event_t *event, int first);
-
-static int
-yaml_parser_parse_flow_sequence_entry_mapping_key(yaml_parser_t *parser,
- yaml_event_t *event);
-
-static int
-yaml_parser_parse_flow_sequence_entry_mapping_value(yaml_parser_t *parser,
- yaml_event_t *event);
-
-static int
-yaml_parser_parse_flow_sequence_entry_mapping_end(yaml_parser_t *parser,
- yaml_event_t *event);
-
-static int
-yaml_parser_parse_flow_mapping_key(yaml_parser_t *parser,
- yaml_event_t *event, int first);
-
-static int
-yaml_parser_parse_flow_mapping_value(yaml_parser_t *parser,
- yaml_event_t *event, int empty);
-
-/*
- * Utility functions.
- */
-
-static int
-yaml_parser_process_empty_scalar(yaml_parser_t *parser,
- yaml_event_t *event, yaml_mark_t mark);
-
-static int
-yaml_parser_process_directives(yaml_parser_t *parser,
- yaml_version_directive_t **version_directive_ref,
- yaml_tag_directive_t **tag_directives_start_ref,
- yaml_tag_directive_t **tag_directives_end_ref);
-
-static int
-yaml_parser_append_tag_directive(yaml_parser_t *parser,
- yaml_tag_directive_t value, int allow_duplicates, yaml_mark_t mark);
-
-/*
- * Get the next event.
- */
-
-YAML_DECLARE(int)
-yaml_parser_parse(yaml_parser_t *parser, yaml_event_t *event)
-{
- assert(parser); /* Non-NULL parser object is expected. */
- assert(event); /* Non-NULL event object is expected. */
-
- /* Erase the event object. */
-
- memset(event, 0, sizeof(yaml_event_t));
-
- /* No events after the end of the stream or error. */
-
- if (parser->stream_end_produced || parser->error ||
- parser->state == YAML_PARSE_END_STATE) {
- return 1;
- }
-
- /* Generate the next event. */
-
- return yaml_parser_state_machine(parser, event);
-}
-
-/*
- * Set parser error.
- */
-
-static int
-yaml_parser_set_parser_error(yaml_parser_t *parser,
- const char *problem, yaml_mark_t problem_mark)
-{
- parser->error = YAML_PARSER_ERROR;
- parser->problem = problem;
- parser->problem_mark = problem_mark;
-
- return 0;
-}
-
-static int
-yaml_parser_set_parser_error_context(yaml_parser_t *parser,
- const char *context, yaml_mark_t context_mark,
- const char *problem, yaml_mark_t problem_mark)
-{
- parser->error = YAML_PARSER_ERROR;
- parser->context = context;
- parser->context_mark = context_mark;
- parser->problem = problem;
- parser->problem_mark = problem_mark;
-
- return 0;
-}
-
-
-/*
- * State dispatcher.
- */
-
-static int
-yaml_parser_state_machine(yaml_parser_t *parser, yaml_event_t *event)
-{
- switch (parser->state)
- {
- case YAML_PARSE_STREAM_START_STATE:
- return yaml_parser_parse_stream_start(parser, event);
-
- case YAML_PARSE_IMPLICIT_DOCUMENT_START_STATE:
- return yaml_parser_parse_document_start(parser, event, 1);
-
- case YAML_PARSE_DOCUMENT_START_STATE:
- return yaml_parser_parse_document_start(parser, event, 0);
-
- case YAML_PARSE_DOCUMENT_CONTENT_STATE:
- return yaml_parser_parse_document_content(parser, event);
-
- case YAML_PARSE_DOCUMENT_END_STATE:
- return yaml_parser_parse_document_end(parser, event);
-
- case YAML_PARSE_BLOCK_NODE_STATE:
- return yaml_parser_parse_node(parser, event, 1, 0);
-
- case YAML_PARSE_BLOCK_NODE_OR_INDENTLESS_SEQUENCE_STATE:
- return yaml_parser_parse_node(parser, event, 1, 1);
-
- case YAML_PARSE_FLOW_NODE_STATE:
- return yaml_parser_parse_node(parser, event, 0, 0);
-
- case YAML_PARSE_BLOCK_SEQUENCE_FIRST_ENTRY_STATE:
- return yaml_parser_parse_block_sequence_entry(parser, event, 1);
-
- case YAML_PARSE_BLOCK_SEQUENCE_ENTRY_STATE:
- return yaml_parser_parse_block_sequence_entry(parser, event, 0);
-
- case YAML_PARSE_INDENTLESS_SEQUENCE_ENTRY_STATE:
- return yaml_parser_parse_indentless_sequence_entry(parser, event);
-
- case YAML_PARSE_BLOCK_MAPPING_FIRST_KEY_STATE:
- return yaml_parser_parse_block_mapping_key(parser, event, 1);
-
- case YAML_PARSE_BLOCK_MAPPING_KEY_STATE:
- return yaml_parser_parse_block_mapping_key(parser, event, 0);
-
- case YAML_PARSE_BLOCK_MAPPING_VALUE_STATE:
- return yaml_parser_parse_block_mapping_value(parser, event);
-
- case YAML_PARSE_FLOW_SEQUENCE_FIRST_ENTRY_STATE:
- return yaml_parser_parse_flow_sequence_entry(parser, event, 1);
-
- case YAML_PARSE_FLOW_SEQUENCE_ENTRY_STATE:
- return yaml_parser_parse_flow_sequence_entry(parser, event, 0);
-
- case YAML_PARSE_FLOW_SEQUENCE_ENTRY_MAPPING_KEY_STATE:
- return yaml_parser_parse_flow_sequence_entry_mapping_key(parser, event);
-
- case YAML_PARSE_FLOW_SEQUENCE_ENTRY_MAPPING_VALUE_STATE:
- return yaml_parser_parse_flow_sequence_entry_mapping_value(parser, event);
-
- case YAML_PARSE_FLOW_SEQUENCE_ENTRY_MAPPING_END_STATE:
- return yaml_parser_parse_flow_sequence_entry_mapping_end(parser, event);
-
- case YAML_PARSE_FLOW_MAPPING_FIRST_KEY_STATE:
- return yaml_parser_parse_flow_mapping_key(parser, event, 1);
-
- case YAML_PARSE_FLOW_MAPPING_KEY_STATE:
- return yaml_parser_parse_flow_mapping_key(parser, event, 0);
-
- case YAML_PARSE_FLOW_MAPPING_VALUE_STATE:
- return yaml_parser_parse_flow_mapping_value(parser, event, 0);
-
- case YAML_PARSE_FLOW_MAPPING_EMPTY_VALUE_STATE:
- return yaml_parser_parse_flow_mapping_value(parser, event, 1);
-
- default:
- assert(1); /* Invalid state. */
- }
-
- return 0;
-}
-
-/*
- * Parse the production:
- * stream ::= STREAM-START implicit_document? explicit_document* STREAM-END
- * ************
- */
-
-static int
-yaml_parser_parse_stream_start(yaml_parser_t *parser, yaml_event_t *event)
-{
- yaml_token_t *token;
-
- token = PEEK_TOKEN(parser);
- if (!token) return 0;
-
- if (token->type != YAML_STREAM_START_TOKEN) {
- return yaml_parser_set_parser_error(parser,
- "did not find expected <stream-start>", token->start_mark);
- }
-
- parser->state = YAML_PARSE_IMPLICIT_DOCUMENT_START_STATE;
- STREAM_START_EVENT_INIT(*event, token->data.stream_start.encoding,
- token->start_mark, token->start_mark);
- SKIP_TOKEN(parser);
-
- return 1;
-}
-
-/*
- * Parse the productions:
- * implicit_document ::= block_node DOCUMENT-END*
- * *
- * explicit_document ::= DIRECTIVE* DOCUMENT-START block_node? DOCUMENT-END*
- * *************************
- */
-
-static int
-yaml_parser_parse_document_start(yaml_parser_t *parser, yaml_event_t *event,
- int implicit)
-{
- yaml_token_t *token;
- yaml_version_directive_t *version_directive = NULL;
- struct {
- yaml_tag_directive_t *start;
- yaml_tag_directive_t *end;
- } tag_directives = { NULL, NULL };
-
- token = PEEK_TOKEN(parser);
- if (!token) return 0;
-
- /* Parse extra document end indicators. */
-
- if (!implicit)
- {
- while (token->type == YAML_DOCUMENT_END_TOKEN) {
- SKIP_TOKEN(parser);
- token = PEEK_TOKEN(parser);
- if (!token) return 0;
- }
- }
-
- /* Parse an implicit document. */
-
- if (implicit && token->type != YAML_VERSION_DIRECTIVE_TOKEN &&
- token->type != YAML_TAG_DIRECTIVE_TOKEN &&
- token->type != YAML_DOCUMENT_START_TOKEN &&
- token->type != YAML_STREAM_END_TOKEN)
- {
- if (!yaml_parser_process_directives(parser, NULL, NULL, NULL))
- return 0;
- if (!PUSH(parser, parser->states, YAML_PARSE_DOCUMENT_END_STATE))
- return 0;
- parser->state = YAML_PARSE_BLOCK_NODE_STATE;
- DOCUMENT_START_EVENT_INIT(*event, NULL, NULL, NULL, 1,
- token->start_mark, token->start_mark);
- return 1;
- }
-
- /* Parse an explicit document. */
-
- else if (token->type != YAML_STREAM_END_TOKEN)
- {
- yaml_mark_t start_mark, end_mark;
- start_mark = token->start_mark;
- if (!yaml_parser_process_directives(parser, &version_directive,
- &tag_directives.start, &tag_directives.end))
- return 0;
- token = PEEK_TOKEN(parser);
- if (!token) goto error;
- if (token->type != YAML_DOCUMENT_START_TOKEN) {
- yaml_parser_set_parser_error(parser,
- "did not find expected <document start>", token->start_mark);
- goto error;
- }
- if (!PUSH(parser, parser->states, YAML_PARSE_DOCUMENT_END_STATE))
- goto error;
- parser->state = YAML_PARSE_DOCUMENT_CONTENT_STATE;
- end_mark = token->end_mark;
- DOCUMENT_START_EVENT_INIT(*event, version_directive,
- tag_directives.start, tag_directives.end, 0,
- start_mark, end_mark);
- SKIP_TOKEN(parser);
- version_directive = NULL;
- tag_directives.start = tag_directives.end = NULL;
- return 1;
- }
-
- /* Parse the stream end. */
-
- else
- {
- parser->state = YAML_PARSE_END_STATE;
- STREAM_END_EVENT_INIT(*event, token->start_mark, token->end_mark);
- SKIP_TOKEN(parser);
- return 1;
- }
-
-error:
- yaml_free(version_directive);
- while (tag_directives.start != tag_directives.end) {
- yaml_free(tag_directives.end[-1].handle);
- yaml_free(tag_directives.end[-1].prefix);
- tag_directives.end --;
- }
- yaml_free(tag_directives.start);
- return 0;
-}
-
-/*
- * Parse the productions:
- * explicit_document ::= DIRECTIVE* DOCUMENT-START block_node? DOCUMENT-END*
- * ***********
- */
-
-static int
-yaml_parser_parse_document_content(yaml_parser_t *parser, yaml_event_t *event)
-{
- yaml_token_t *token;
-
- token = PEEK_TOKEN(parser);
- if (!token) return 0;
-
- if (token->type == YAML_VERSION_DIRECTIVE_TOKEN ||
- token->type == YAML_TAG_DIRECTIVE_TOKEN ||
- token->type == YAML_DOCUMENT_START_TOKEN ||
- token->type == YAML_DOCUMENT_END_TOKEN ||
- token->type == YAML_STREAM_END_TOKEN) {
- parser->state = POP(parser, parser->states);
- return yaml_parser_process_empty_scalar(parser, event,
- token->start_mark);
- }
- else {
- return yaml_parser_parse_node(parser, event, 1, 0);
- }
-}
-
-/*
- * Parse the productions:
- * implicit_document ::= block_node DOCUMENT-END*
- * *************
- * explicit_document ::= DIRECTIVE* DOCUMENT-START block_node? DOCUMENT-END*
- * *************
- */
-
-static int
-yaml_parser_parse_document_end(yaml_parser_t *parser, yaml_event_t *event)
-{
- yaml_token_t *token;
- yaml_mark_t start_mark, end_mark;
- int implicit = 1;
-
- token = PEEK_TOKEN(parser);
- if (!token) return 0;
-
- start_mark = end_mark = token->start_mark;
-
- if (token->type == YAML_DOCUMENT_END_TOKEN) {
- end_mark = token->end_mark;
- SKIP_TOKEN(parser);
- implicit = 0;
- }
-
- while (!STACK_EMPTY(parser, parser->tag_directives)) {
- yaml_tag_directive_t tag_directive = POP(parser, parser->tag_directives);
- yaml_free(tag_directive.handle);
- yaml_free(tag_directive.prefix);
- }
-
- parser->state = YAML_PARSE_DOCUMENT_START_STATE;
- DOCUMENT_END_EVENT_INIT(*event, implicit, start_mark, end_mark);
-
- return 1;
-}
-
-/*
- * Parse the productions:
- * block_node_or_indentless_sequence ::=
- * ALIAS
- * *****
- * | properties (block_content | indentless_block_sequence)?
- * ********** *
- * | block_content | indentless_block_sequence
- * *
- * block_node ::= ALIAS
- * *****
- * | properties block_content?
- * ********** *
- * | block_content
- * *
- * flow_node ::= ALIAS
- * *****
- * | properties flow_content?
- * ********** *
- * | flow_content
- * *
- * properties ::= TAG ANCHOR? | ANCHOR TAG?
- * *************************
- * block_content ::= block_collection | flow_collection | SCALAR
- * ******
- * flow_content ::= flow_collection | SCALAR
- * ******
- */
-
-static int
-yaml_parser_parse_node(yaml_parser_t *parser, yaml_event_t *event,
- int block, int indentless_sequence)
-{
- yaml_token_t *token;
- yaml_char_t *anchor = NULL;
- yaml_char_t *tag_handle = NULL;
- yaml_char_t *tag_suffix = NULL;
- yaml_char_t *tag = NULL;
- yaml_mark_t start_mark, end_mark, tag_mark;
- int implicit;
-
- token = PEEK_TOKEN(parser);
- if (!token) return 0;
-
- if (token->type == YAML_ALIAS_TOKEN)
- {
- parser->state = POP(parser, parser->states);
- ALIAS_EVENT_INIT(*event, token->data.alias.value,
- token->start_mark, token->end_mark);
- SKIP_TOKEN(parser);
- return 1;
- }
-
- else
- {
- start_mark = end_mark = token->start_mark;
-
- if (token->type == YAML_ANCHOR_TOKEN)
- {
- anchor = token->data.anchor.value;
- start_mark = token->start_mark;
- end_mark = token->end_mark;
- SKIP_TOKEN(parser);
- token = PEEK_TOKEN(parser);
- if (!token) goto error;
- if (token->type == YAML_TAG_TOKEN)
- {
- tag_handle = token->data.tag.handle;
- tag_suffix = token->data.tag.suffix;
- tag_mark = token->start_mark;
- end_mark = token->end_mark;
- SKIP_TOKEN(parser);
- token = PEEK_TOKEN(parser);
- if (!token) goto error;
- }
- }
- else if (token->type == YAML_TAG_TOKEN)
- {
- tag_handle = token->data.tag.handle;
- tag_suffix = token->data.tag.suffix;
- start_mark = tag_mark = token->start_mark;
- end_mark = token->end_mark;
- SKIP_TOKEN(parser);
- token = PEEK_TOKEN(parser);
- if (!token) goto error;
- if (token->type == YAML_ANCHOR_TOKEN)
- {
- anchor = token->data.anchor.value;
- end_mark = token->end_mark;
- SKIP_TOKEN(parser);
- token = PEEK_TOKEN(parser);
- if (!token) goto error;
- }
- }
-
- if (tag_handle) {
- if (!*tag_handle) {
- tag = tag_suffix;
- yaml_free(tag_handle);
- tag_handle = tag_suffix = NULL;
- }
- else {
- yaml_tag_directive_t *tag_directive;
- for (tag_directive = parser->tag_directives.start;
- tag_directive != parser->tag_directives.top;
- tag_directive ++) {
- if (strcmp((char *)tag_directive->handle, (char *)tag_handle) == 0) {
- size_t prefix_len = strlen((char *)tag_directive->prefix);
- size_t suffix_len = strlen((char *)tag_suffix);
- tag = YAML_MALLOC(prefix_len+suffix_len+1);
- if (!tag) {
- parser->error = YAML_MEMORY_ERROR;
- goto error;
- }
- memcpy(tag, tag_directive->prefix, prefix_len);
- memcpy(tag+prefix_len, tag_suffix, suffix_len);
- tag[prefix_len+suffix_len] = '\0';
- yaml_free(tag_handle);
- yaml_free(tag_suffix);
- tag_handle = tag_suffix = NULL;
- break;
- }
- }
- if (!tag) {
- yaml_parser_set_parser_error_context(parser,
- "while parsing a node", start_mark,
- "found undefined tag handle", tag_mark);
- goto error;
- }
- }
- }
-
- implicit = (!tag || !*tag);
- if (indentless_sequence && token->type == YAML_BLOCK_ENTRY_TOKEN) {
- end_mark = token->end_mark;
- parser->state = YAML_PARSE_INDENTLESS_SEQUENCE_ENTRY_STATE;
- SEQUENCE_START_EVENT_INIT(*event, anchor, tag, implicit,
- YAML_BLOCK_SEQUENCE_STYLE, start_mark, end_mark);
- return 1;
- }
- else {
- if (token->type == YAML_SCALAR_TOKEN) {
- int plain_implicit = 0;
- int quoted_implicit = 0;
- end_mark = token->end_mark;
- if ((token->data.scalar.style == YAML_PLAIN_SCALAR_STYLE && !tag)
- || (tag && strcmp((char *)tag, "!") == 0)) {
- plain_implicit = 1;
- }
- else if (!tag) {
- quoted_implicit = 1;
- }
- parser->state = POP(parser, parser->states);
- SCALAR_EVENT_INIT(*event, anchor, tag,
- token->data.scalar.value, token->data.scalar.length,
- plain_implicit, quoted_implicit,
- token->data.scalar.style, start_mark, end_mark);
- SKIP_TOKEN(parser);
- return 1;
- }
- else if (token->type == YAML_FLOW_SEQUENCE_START_TOKEN) {
- end_mark = token->end_mark;
- parser->state = YAML_PARSE_FLOW_SEQUENCE_FIRST_ENTRY_STATE;
- SEQUENCE_START_EVENT_INIT(*event, anchor, tag, implicit,
- YAML_FLOW_SEQUENCE_STYLE, start_mark, end_mark);
- return 1;
- }
- else if (token->type == YAML_FLOW_MAPPING_START_TOKEN) {
- end_mark = token->end_mark;
- parser->state = YAML_PARSE_FLOW_MAPPING_FIRST_KEY_STATE;
- MAPPING_START_EVENT_INIT(*event, anchor, tag, implicit,
- YAML_FLOW_MAPPING_STYLE, start_mark, end_mark);
- return 1;
- }
- else if (block && token->type == YAML_BLOCK_SEQUENCE_START_TOKEN) {
- end_mark = token->end_mark;
- parser->state = YAML_PARSE_BLOCK_SEQUENCE_FIRST_ENTRY_STATE;
- SEQUENCE_START_EVENT_INIT(*event, anchor, tag, implicit,
- YAML_BLOCK_SEQUENCE_STYLE, start_mark, end_mark);
- return 1;
- }
- else if (block && token->type == YAML_BLOCK_MAPPING_START_TOKEN) {
- end_mark = token->end_mark;
- parser->state = YAML_PARSE_BLOCK_MAPPING_FIRST_KEY_STATE;
- MAPPING_START_EVENT_INIT(*event, anchor, tag, implicit,
- YAML_BLOCK_MAPPING_STYLE, start_mark, end_mark);
- return 1;
- }
- else if (anchor || tag) {
- yaml_char_t *value = YAML_MALLOC(1);
- if (!value) {
- parser->error = YAML_MEMORY_ERROR;
- goto error;
- }
- value[0] = '\0';
- parser->state = POP(parser, parser->states);
- SCALAR_EVENT_INIT(*event, anchor, tag, value, 0,
- implicit, 0, YAML_PLAIN_SCALAR_STYLE,
- start_mark, end_mark);
- return 1;
- }
- else {
- yaml_parser_set_parser_error_context(parser,
- (block ? "while parsing a block node"
- : "while parsing a flow node"), start_mark,
- "did not find expected node content", token->start_mark);
- goto error;
- }
- }
- }
-
-error:
- yaml_free(anchor);
- yaml_free(tag_handle);
- yaml_free(tag_suffix);
- yaml_free(tag);
-
- return 0;
-}
-
-/*
- * Parse the productions:
- * block_sequence ::= BLOCK-SEQUENCE-START (BLOCK-ENTRY block_node?)* BLOCK-END
- * ******************** *********** * *********
- */
-
-static int
-yaml_parser_parse_block_sequence_entry(yaml_parser_t *parser,
- yaml_event_t *event, int first)
-{
- yaml_token_t *token;
-
- if (first) {
- token = PEEK_TOKEN(parser);
- if (!PUSH(parser, parser->marks, token->start_mark))
- return 0;
- SKIP_TOKEN(parser);
- }
-
- token = PEEK_TOKEN(parser);
- if (!token) return 0;
-
- if (token->type == YAML_BLOCK_ENTRY_TOKEN)
- {
- yaml_mark_t mark = token->end_mark;
- SKIP_TOKEN(parser);
- token = PEEK_TOKEN(parser);
- if (!token) return 0;
- if (token->type != YAML_BLOCK_ENTRY_TOKEN &&
- token->type != YAML_BLOCK_END_TOKEN) {
- if (!PUSH(parser, parser->states,
- YAML_PARSE_BLOCK_SEQUENCE_ENTRY_STATE))
- return 0;
- return yaml_parser_parse_node(parser, event, 1, 0);
- }
- else {
- parser->state = YAML_PARSE_BLOCK_SEQUENCE_ENTRY_STATE;
- return yaml_parser_process_empty_scalar(parser, event, mark);
- }
- }
-
- else if (token->type == YAML_BLOCK_END_TOKEN)
- {
- parser->state = POP(parser, parser->states);
- (void)POP(parser, parser->marks);
- SEQUENCE_END_EVENT_INIT(*event, token->start_mark, token->end_mark);
- SKIP_TOKEN(parser);
- return 1;
- }
-
- else
- {
- return yaml_parser_set_parser_error_context(parser,
- "while parsing a block collection", POP(parser, parser->marks),
- "did not find expected '-' indicator", token->start_mark);
- }
-}
-
-/*
- * Parse the productions:
- * indentless_sequence ::= (BLOCK-ENTRY block_node?)+
- * *********** *
- */
-
-static int
-yaml_parser_parse_indentless_sequence_entry(yaml_parser_t *parser,
- yaml_event_t *event)
-{
- yaml_token_t *token;
-
- token = PEEK_TOKEN(parser);
- if (!token) return 0;
-
- if (token->type == YAML_BLOCK_ENTRY_TOKEN)
- {
- yaml_mark_t mark = token->end_mark;
- SKIP_TOKEN(parser);
- token = PEEK_TOKEN(parser);
- if (!token) return 0;
- if (token->type != YAML_BLOCK_ENTRY_TOKEN &&
- token->type != YAML_KEY_TOKEN &&
- token->type != YAML_VALUE_TOKEN &&
- token->type != YAML_BLOCK_END_TOKEN) {
- if (!PUSH(parser, parser->states,
- YAML_PARSE_INDENTLESS_SEQUENCE_ENTRY_STATE))
- return 0;
- return yaml_parser_parse_node(parser, event, 1, 0);
- }
- else {
- parser->state = YAML_PARSE_INDENTLESS_SEQUENCE_ENTRY_STATE;
- return yaml_parser_process_empty_scalar(parser, event, mark);
- }
- }
-
- else
- {
- parser->state = POP(parser, parser->states);
- SEQUENCE_END_EVENT_INIT(*event, token->start_mark, token->start_mark);
- return 1;
- }
-}
-
-/*
- * Parse the productions:
- * block_mapping ::= BLOCK-MAPPING_START
- * *******************
- * ((KEY block_node_or_indentless_sequence?)?
- * *** *
- * (VALUE block_node_or_indentless_sequence?)?)*
- *
- * BLOCK-END
- * *********
- */
-
-static int
-yaml_parser_parse_block_mapping_key(yaml_parser_t *parser,
- yaml_event_t *event, int first)
-{
- yaml_token_t *token;
-
- if (first) {
- token = PEEK_TOKEN(parser);
- if (!PUSH(parser, parser->marks, token->start_mark))
- return 0;
- SKIP_TOKEN(parser);
- }
-
- token = PEEK_TOKEN(parser);
- if (!token) return 0;
-
- if (token->type == YAML_KEY_TOKEN)
- {
- yaml_mark_t mark = token->end_mark;
- SKIP_TOKEN(parser);
- token = PEEK_TOKEN(parser);
- if (!token) return 0;
- if (token->type != YAML_KEY_TOKEN &&
- token->type != YAML_VALUE_TOKEN &&
- token->type != YAML_BLOCK_END_TOKEN) {
- if (!PUSH(parser, parser->states,
- YAML_PARSE_BLOCK_MAPPING_VALUE_STATE))
- return 0;
- return yaml_parser_parse_node(parser, event, 1, 1);
- }
- else {
- parser->state = YAML_PARSE_BLOCK_MAPPING_VALUE_STATE;
- return yaml_parser_process_empty_scalar(parser, event, mark);
- }
- }
-
- else if (token->type == YAML_BLOCK_END_TOKEN)
- {
- parser->state = POP(parser, parser->states);
- (void)POP(parser, parser->marks);
- MAPPING_END_EVENT_INIT(*event, token->start_mark, token->end_mark);
- SKIP_TOKEN(parser);
- return 1;
- }
-
- else
- {
- return yaml_parser_set_parser_error_context(parser,
- "while parsing a block mapping", POP(parser, parser->marks),
- "did not find expected key", token->start_mark);
- }
-}
-
-/*
- * Parse the productions:
- * block_mapping ::= BLOCK-MAPPING_START
- *
- * ((KEY block_node_or_indentless_sequence?)?
- *
- * (VALUE block_node_or_indentless_sequence?)?)*
- * ***** *
- * BLOCK-END
- *
- */
-
-static int
-yaml_parser_parse_block_mapping_value(yaml_parser_t *parser,
- yaml_event_t *event)
-{
- yaml_token_t *token;
-
- token = PEEK_TOKEN(parser);
- if (!token) return 0;
-
- if (token->type == YAML_VALUE_TOKEN)
- {
- yaml_mark_t mark = token->end_mark;
- SKIP_TOKEN(parser);
- token = PEEK_TOKEN(parser);
- if (!token) return 0;
- if (token->type != YAML_KEY_TOKEN &&
- token->type != YAML_VALUE_TOKEN &&
- token->type != YAML_BLOCK_END_TOKEN) {
- if (!PUSH(parser, parser->states,
- YAML_PARSE_BLOCK_MAPPING_KEY_STATE))
- return 0;
- return yaml_parser_parse_node(parser, event, 1, 1);
- }
- else {
- parser->state = YAML_PARSE_BLOCK_MAPPING_KEY_STATE;
- return yaml_parser_process_empty_scalar(parser, event, mark);
- }
- }
-
- else
- {
- parser->state = YAML_PARSE_BLOCK_MAPPING_KEY_STATE;
- return yaml_parser_process_empty_scalar(parser, event, token->start_mark);
- }
-}
-
-/*
- * Parse the productions:
- * flow_sequence ::= FLOW-SEQUENCE-START
- * *******************
- * (flow_sequence_entry FLOW-ENTRY)*
- * * **********
- * flow_sequence_entry?
- * *
- * FLOW-SEQUENCE-END
- * *****************
- * flow_sequence_entry ::= flow_node | KEY flow_node? (VALUE flow_node?)?
- * *
- */
-
-static int
-yaml_parser_parse_flow_sequence_entry(yaml_parser_t *parser,
- yaml_event_t *event, int first)
-{
- yaml_token_t *token;
-
- if (first) {
- token = PEEK_TOKEN(parser);
- if (!PUSH(parser, parser->marks, token->start_mark))
- return 0;
- SKIP_TOKEN(parser);
- }
-
- token = PEEK_TOKEN(parser);
- if (!token) return 0;
-
- if (token->type != YAML_FLOW_SEQUENCE_END_TOKEN)
- {
- if (!first) {
- if (token->type == YAML_FLOW_ENTRY_TOKEN) {
- SKIP_TOKEN(parser);
- token = PEEK_TOKEN(parser);
- if (!token) return 0;
- }
- else {
- return yaml_parser_set_parser_error_context(parser,
- "while parsing a flow sequence", POP(parser, parser->marks),
- "did not find expected ',' or ']'", token->start_mark);
- }
- }
-
- if (token->type == YAML_KEY_TOKEN) {
- parser->state = YAML_PARSE_FLOW_SEQUENCE_ENTRY_MAPPING_KEY_STATE;
- MAPPING_START_EVENT_INIT(*event, NULL, NULL,
- 1, YAML_FLOW_MAPPING_STYLE,
- token->start_mark, token->end_mark);
- SKIP_TOKEN(parser);
- return 1;
- }
-
- else if (token->type != YAML_FLOW_SEQUENCE_END_TOKEN) {
- if (!PUSH(parser, parser->states,
- YAML_PARSE_FLOW_SEQUENCE_ENTRY_STATE))
- return 0;
- return yaml_parser_parse_node(parser, event, 0, 0);
- }
- }
-
- parser->state = POP(parser, parser->states);
- (void)POP(parser, parser->marks);
- SEQUENCE_END_EVENT_INIT(*event, token->start_mark, token->end_mark);
- SKIP_TOKEN(parser);
- return 1;
-}
-
-/*
- * Parse the productions:
- * flow_sequence_entry ::= flow_node | KEY flow_node? (VALUE flow_node?)?
- * *** *
- */
-
-static int
-yaml_parser_parse_flow_sequence_entry_mapping_key(yaml_parser_t *parser,
- yaml_event_t *event)
-{
- yaml_token_t *token;
-
- token = PEEK_TOKEN(parser);
- if (!token) return 0;
-
- if (token->type != YAML_VALUE_TOKEN && token->type != YAML_FLOW_ENTRY_TOKEN
- && token->type != YAML_FLOW_SEQUENCE_END_TOKEN) {
- if (!PUSH(parser, parser->states,
- YAML_PARSE_FLOW_SEQUENCE_ENTRY_MAPPING_VALUE_STATE))
- return 0;
- return yaml_parser_parse_node(parser, event, 0, 0);
- }
- else {
- yaml_mark_t mark = token->end_mark;
- SKIP_TOKEN(parser);
- parser->state = YAML_PARSE_FLOW_SEQUENCE_ENTRY_MAPPING_VALUE_STATE;
- return yaml_parser_process_empty_scalar(parser, event, mark);
- }
-}
-
-/*
- * Parse the productions:
- * flow_sequence_entry ::= flow_node | KEY flow_node? (VALUE flow_node?)?
- * ***** *
- */
-
-static int
-yaml_parser_parse_flow_sequence_entry_mapping_value(yaml_parser_t *parser,
- yaml_event_t *event)
-{
- yaml_token_t *token;
-
- token = PEEK_TOKEN(parser);
- if (!token) return 0;
-
- if (token->type == YAML_VALUE_TOKEN) {
- SKIP_TOKEN(parser);
- token = PEEK_TOKEN(parser);
- if (!token) return 0;
- if (token->type != YAML_FLOW_ENTRY_TOKEN
- && token->type != YAML_FLOW_SEQUENCE_END_TOKEN) {
- if (!PUSH(parser, parser->states,
- YAML_PARSE_FLOW_SEQUENCE_ENTRY_MAPPING_END_STATE))
- return 0;
- return yaml_parser_parse_node(parser, event, 0, 0);
- }
- }
- parser->state = YAML_PARSE_FLOW_SEQUENCE_ENTRY_MAPPING_END_STATE;
- return yaml_parser_process_empty_scalar(parser, event, token->start_mark);
-}
-
-/*
- * Parse the productions:
- * flow_sequence_entry ::= flow_node | KEY flow_node? (VALUE flow_node?)?
- * *
- */
-
-static int
-yaml_parser_parse_flow_sequence_entry_mapping_end(yaml_parser_t *parser,
- yaml_event_t *event)
-{
- yaml_token_t *token;
-
- token = PEEK_TOKEN(parser);
- if (!token) return 0;
-
- parser->state = YAML_PARSE_FLOW_SEQUENCE_ENTRY_STATE;
-
- MAPPING_END_EVENT_INIT(*event, token->start_mark, token->start_mark);
- return 1;
-}
-
-/*
- * Parse the productions:
- * flow_mapping ::= FLOW-MAPPING-START
- * ******************
- * (flow_mapping_entry FLOW-ENTRY)*
- * * **********
- * flow_mapping_entry?
- * ******************
- * FLOW-MAPPING-END
- * ****************
- * flow_mapping_entry ::= flow_node | KEY flow_node? (VALUE flow_node?)?
- * * *** *
- */
-
-static int
-yaml_parser_parse_flow_mapping_key(yaml_parser_t *parser,
- yaml_event_t *event, int first)
-{
- yaml_token_t *token;
-
- if (first) {
- token = PEEK_TOKEN(parser);
- if (!PUSH(parser, parser->marks, token->start_mark))
- return 0;
- SKIP_TOKEN(parser);
- }
-
- token = PEEK_TOKEN(parser);
- if (!token) return 0;
-
- if (token->type != YAML_FLOW_MAPPING_END_TOKEN)
- {
- if (!first) {
- if (token->type == YAML_FLOW_ENTRY_TOKEN) {
- SKIP_TOKEN(parser);
- token = PEEK_TOKEN(parser);
- if (!token) return 0;
- }
- else {
- return yaml_parser_set_parser_error_context(parser,
- "while parsing a flow mapping", POP(parser, parser->marks),
- "did not find expected ',' or '}'", token->start_mark);
- }
- }
-
- if (token->type == YAML_KEY_TOKEN) {
- SKIP_TOKEN(parser);
- token = PEEK_TOKEN(parser);
- if (!token) return 0;
- if (token->type != YAML_VALUE_TOKEN
- && token->type != YAML_FLOW_ENTRY_TOKEN
- && token->type != YAML_FLOW_MAPPING_END_TOKEN) {
- if (!PUSH(parser, parser->states,
- YAML_PARSE_FLOW_MAPPING_VALUE_STATE))
- return 0;
- return yaml_parser_parse_node(parser, event, 0, 0);
- }
- else {
- parser->state = YAML_PARSE_FLOW_MAPPING_VALUE_STATE;
- return yaml_parser_process_empty_scalar(parser, event,
- token->start_mark);
- }
- }
- else if (token->type != YAML_FLOW_MAPPING_END_TOKEN) {
- if (!PUSH(parser, parser->states,
- YAML_PARSE_FLOW_MAPPING_EMPTY_VALUE_STATE))
- return 0;
- return yaml_parser_parse_node(parser, event, 0, 0);
- }
- }
-
- parser->state = POP(parser, parser->states);
- (void)POP(parser, parser->marks);
- MAPPING_END_EVENT_INIT(*event, token->start_mark, token->end_mark);
- SKIP_TOKEN(parser);
- return 1;
-}
-
-/*
- * Parse the productions:
- * flow_mapping_entry ::= flow_node | KEY flow_node? (VALUE flow_node?)?
- * * ***** *
- */
-
-static int
-yaml_parser_parse_flow_mapping_value(yaml_parser_t *parser,
- yaml_event_t *event, int empty)
-{
- yaml_token_t *token;
-
- token = PEEK_TOKEN(parser);
- if (!token) return 0;
-
- if (empty) {
- parser->state = YAML_PARSE_FLOW_MAPPING_KEY_STATE;
- return yaml_parser_process_empty_scalar(parser, event,
- token->start_mark);
- }
-
- if (token->type == YAML_VALUE_TOKEN) {
- SKIP_TOKEN(parser);
- token = PEEK_TOKEN(parser);
- if (!token) return 0;
- if (token->type != YAML_FLOW_ENTRY_TOKEN
- && token->type != YAML_FLOW_MAPPING_END_TOKEN) {
- if (!PUSH(parser, parser->states,
- YAML_PARSE_FLOW_MAPPING_KEY_STATE))
- return 0;
- return yaml_parser_parse_node(parser, event, 0, 0);
- }
- }
-
- parser->state = YAML_PARSE_FLOW_MAPPING_KEY_STATE;
- return yaml_parser_process_empty_scalar(parser, event, token->start_mark);
-}
-
-/*
- * Generate an empty scalar event.
- */
-
-static int
-yaml_parser_process_empty_scalar(yaml_parser_t *parser, yaml_event_t *event,
- yaml_mark_t mark)
-{
- yaml_char_t *value;
-
- value = YAML_MALLOC(1);
- if (!value) {
- parser->error = YAML_MEMORY_ERROR;
- return 0;
- }
- value[0] = '\0';
-
- SCALAR_EVENT_INIT(*event, NULL, NULL, value, 0,
- 1, 0, YAML_PLAIN_SCALAR_STYLE, mark, mark);
-
- return 1;
-}
-
-/*
- * Parse directives.
- */
-
-static int
-yaml_parser_process_directives(yaml_parser_t *parser,
- yaml_version_directive_t **version_directive_ref,
- yaml_tag_directive_t **tag_directives_start_ref,
- yaml_tag_directive_t **tag_directives_end_ref)
-{
- yaml_tag_directive_t default_tag_directives[] = {
- {(yaml_char_t *)"!", (yaml_char_t *)"!"},
- {(yaml_char_t *)"!!", (yaml_char_t *)"tag:yaml.org,2002:"},
- {NULL, NULL}
- };
- yaml_tag_directive_t *default_tag_directive;
- yaml_version_directive_t *version_directive = NULL;
- struct {
- yaml_tag_directive_t *start;
- yaml_tag_directive_t *end;
- yaml_tag_directive_t *top;
- } tag_directives = { NULL, NULL, NULL };
- yaml_token_t *token;
-
- if (!STACK_INIT(parser, tag_directives, yaml_tag_directive_t*))
- goto error;
-
- token = PEEK_TOKEN(parser);
- if (!token) goto error;
-
- while (token->type == YAML_VERSION_DIRECTIVE_TOKEN ||
- token->type == YAML_TAG_DIRECTIVE_TOKEN)
- {
- if (token->type == YAML_VERSION_DIRECTIVE_TOKEN) {
- if (version_directive) {
- yaml_parser_set_parser_error(parser,
- "found duplicate %YAML directive", token->start_mark);
- goto error;
- }
- if (token->data.version_directive.major != 1
- || (
- token->data.version_directive.minor != 1
- && token->data.version_directive.minor != 2
- )) {
- yaml_parser_set_parser_error(parser,
- "found incompatible YAML document", token->start_mark);
- goto error;
- }
- version_directive = YAML_MALLOC_STATIC(yaml_version_directive_t);
- if (!version_directive) {
- parser->error = YAML_MEMORY_ERROR;
- goto error;
- }
- version_directive->major = token->data.version_directive.major;
- version_directive->minor = token->data.version_directive.minor;
- }
-
- else if (token->type == YAML_TAG_DIRECTIVE_TOKEN) {
- yaml_tag_directive_t value;
- value.handle = token->data.tag_directive.handle;
- value.prefix = token->data.tag_directive.prefix;
-
- if (!yaml_parser_append_tag_directive(parser, value, 0,
- token->start_mark))
- goto error;
- if (!PUSH(parser, tag_directives, value))
- goto error;
- }
-
- SKIP_TOKEN(parser);
- token = PEEK_TOKEN(parser);
- if (!token) goto error;
- }
-
- for (default_tag_directive = default_tag_directives;
- default_tag_directive->handle; default_tag_directive++) {
- if (!yaml_parser_append_tag_directive(parser, *default_tag_directive, 1,
- token->start_mark))
- goto error;
- }
-
- if (version_directive_ref) {
- *version_directive_ref = version_directive;
- }
- if (tag_directives_start_ref) {
- if (STACK_EMPTY(parser, tag_directives)) {
- *tag_directives_start_ref = *tag_directives_end_ref = NULL;
- STACK_DEL(parser, tag_directives);
- }
- else {
- *tag_directives_start_ref = tag_directives.start;
- *tag_directives_end_ref = tag_directives.top;
- }
- }
- else {
- STACK_DEL(parser, tag_directives);
- }
-
- if (!version_directive_ref)
- yaml_free(version_directive);
- return 1;
-
-error:
- yaml_free(version_directive);
- while (!STACK_EMPTY(parser, tag_directives)) {
- yaml_tag_directive_t tag_directive = POP(parser, tag_directives);
- yaml_free(tag_directive.handle);
- yaml_free(tag_directive.prefix);
- }
- STACK_DEL(parser, tag_directives);
- return 0;
-}
-
-/*
- * Append a tag directive to the directives stack.
- */
-
-static int
-yaml_parser_append_tag_directive(yaml_parser_t *parser,
- yaml_tag_directive_t value, int allow_duplicates, yaml_mark_t mark)
-{
- yaml_tag_directive_t *tag_directive;
- yaml_tag_directive_t copy = { NULL, NULL };
-
- for (tag_directive = parser->tag_directives.start;
- tag_directive != parser->tag_directives.top; tag_directive ++) {
- if (strcmp((char *)value.handle, (char *)tag_directive->handle) == 0) {
- if (allow_duplicates)
- return 1;
- return yaml_parser_set_parser_error(parser,
- "found duplicate %TAG directive", mark);
- }
- }
-
- copy.handle = yaml_strdup(value.handle);
- copy.prefix = yaml_strdup(value.prefix);
- if (!copy.handle || !copy.prefix) {
- parser->error = YAML_MEMORY_ERROR;
- goto error;
- }
-
- if (!PUSH(parser, parser->tag_directives, copy))
- goto error;
-
- return 1;
-
-error:
- yaml_free(copy.handle);
- yaml_free(copy.prefix);
- return 0;
-}
-
diff --git a/ext/psych/yaml/reader.c b/ext/psych/yaml/reader.c
deleted file mode 100644
index f3ac54c251..0000000000
--- a/ext/psych/yaml/reader.c
+++ /dev/null
@@ -1,469 +0,0 @@
-
-#include "yaml_private.h"
-
-/*
- * Declarations.
- */
-
-static int
-yaml_parser_set_reader_error(yaml_parser_t *parser, const char *problem,
- size_t offset, int value);
-
-static int
-yaml_parser_update_raw_buffer(yaml_parser_t *parser);
-
-static int
-yaml_parser_determine_encoding(yaml_parser_t *parser);
-
-YAML_DECLARE(int)
-yaml_parser_update_buffer(yaml_parser_t *parser, size_t length);
-
-/*
- * Set the reader error and return 0.
- */
-
-static int
-yaml_parser_set_reader_error(yaml_parser_t *parser, const char *problem,
- size_t offset, int value)
-{
- parser->error = YAML_READER_ERROR;
- parser->problem = problem;
- parser->problem_offset = offset;
- parser->problem_value = value;
-
- return 0;
-}
-
-/*
- * Byte order marks.
- */
-
-#define BOM_UTF8 "\xef\xbb\xbf"
-#define BOM_UTF16LE "\xff\xfe"
-#define BOM_UTF16BE "\xfe\xff"
-
-/*
- * Determine the input stream encoding by checking the BOM symbol. If no BOM is
- * found, the UTF-8 encoding is assumed. Return 1 on success, 0 on failure.
- */
-
-static int
-yaml_parser_determine_encoding(yaml_parser_t *parser)
-{
- /* Ensure that we had enough bytes in the raw buffer. */
-
- while (!parser->eof
- && parser->raw_buffer.last - parser->raw_buffer.pointer < 3) {
- if (!yaml_parser_update_raw_buffer(parser)) {
- return 0;
- }
- }
-
- /* Determine the encoding. */
-
- if (parser->raw_buffer.last - parser->raw_buffer.pointer >= 2
- && !memcmp(parser->raw_buffer.pointer, BOM_UTF16LE, 2)) {
- parser->encoding = YAML_UTF16LE_ENCODING;
- parser->raw_buffer.pointer += 2;
- parser->offset += 2;
- }
- else if (parser->raw_buffer.last - parser->raw_buffer.pointer >= 2
- && !memcmp(parser->raw_buffer.pointer, BOM_UTF16BE, 2)) {
- parser->encoding = YAML_UTF16BE_ENCODING;
- parser->raw_buffer.pointer += 2;
- parser->offset += 2;
- }
- else if (parser->raw_buffer.last - parser->raw_buffer.pointer >= 3
- && !memcmp(parser->raw_buffer.pointer, BOM_UTF8, 3)) {
- parser->encoding = YAML_UTF8_ENCODING;
- parser->raw_buffer.pointer += 3;
- parser->offset += 3;
- }
- else {
- parser->encoding = YAML_UTF8_ENCODING;
- }
-
- return 1;
-}
-
-/*
- * Update the raw buffer.
- */
-
-static int
-yaml_parser_update_raw_buffer(yaml_parser_t *parser)
-{
- size_t size_read = 0;
-
- /* Return if the raw buffer is full. */
-
- if (parser->raw_buffer.start == parser->raw_buffer.pointer
- && parser->raw_buffer.last == parser->raw_buffer.end)
- return 1;
-
- /* Return on EOF. */
-
- if (parser->eof) return 1;
-
- /* Move the remaining bytes in the raw buffer to the beginning. */
-
- if (parser->raw_buffer.start < parser->raw_buffer.pointer
- && parser->raw_buffer.pointer < parser->raw_buffer.last) {
- memmove(parser->raw_buffer.start, parser->raw_buffer.pointer,
- parser->raw_buffer.last - parser->raw_buffer.pointer);
- }
- parser->raw_buffer.last -=
- parser->raw_buffer.pointer - parser->raw_buffer.start;
- parser->raw_buffer.pointer = parser->raw_buffer.start;
-
- /* Call the read handler to fill the buffer. */
-
- if (!parser->read_handler(parser->read_handler_data, parser->raw_buffer.last,
- parser->raw_buffer.end - parser->raw_buffer.last, &size_read)) {
- return yaml_parser_set_reader_error(parser, "input error",
- parser->offset, -1);
- }
- parser->raw_buffer.last += size_read;
- if (!size_read) {
- parser->eof = 1;
- }
-
- return 1;
-}
-
-/*
- * Ensure that the buffer contains at least `length` characters.
- * Return 1 on success, 0 on failure.
- *
- * The length is supposed to be significantly less that the buffer size.
- */
-
-YAML_DECLARE(int)
-yaml_parser_update_buffer(yaml_parser_t *parser, size_t length)
-{
- int first = 1;
-
- assert(parser->read_handler); /* Read handler must be set. */
-
- /* If the EOF flag is set and the raw buffer is empty, do nothing. */
-
- if (parser->eof && parser->raw_buffer.pointer == parser->raw_buffer.last)
- return 1;
-
- /* Return if the buffer contains enough characters. */
-
- if (parser->unread >= length)
- return 1;
-
- /* Determine the input encoding if it is not known yet. */
-
- if (!parser->encoding) {
- if (!yaml_parser_determine_encoding(parser))
- return 0;
- }
-
- /* Move the unread characters to the beginning of the buffer. */
-
- if (parser->buffer.start < parser->buffer.pointer
- && parser->buffer.pointer < parser->buffer.last) {
- size_t size = parser->buffer.last - parser->buffer.pointer;
- memmove(parser->buffer.start, parser->buffer.pointer, size);
- parser->buffer.pointer = parser->buffer.start;
- parser->buffer.last = parser->buffer.start + size;
- }
- else if (parser->buffer.pointer == parser->buffer.last) {
- parser->buffer.pointer = parser->buffer.start;
- parser->buffer.last = parser->buffer.start;
- }
-
- /* Fill the buffer until it has enough characters. */
-
- while (parser->unread < length)
- {
- /* Fill the raw buffer if necessary. */
-
- if (!first || parser->raw_buffer.pointer == parser->raw_buffer.last) {
- if (!yaml_parser_update_raw_buffer(parser)) return 0;
- }
- first = 0;
-
- /* Decode the raw buffer. */
-
- while (parser->raw_buffer.pointer != parser->raw_buffer.last)
- {
- unsigned int value = 0, value2 = 0;
- int incomplete = 0;
- unsigned char octet;
- unsigned int width = 0;
- int low, high;
- size_t k;
- size_t raw_unread = parser->raw_buffer.last - parser->raw_buffer.pointer;
-
- /* Decode the next character. */
-
- switch (parser->encoding)
- {
- case YAML_UTF8_ENCODING:
-
- /*
- * Decode a UTF-8 character. Check RFC 3629
- * (http://www.ietf.org/rfc/rfc3629.txt) for more details.
- *
- * The following table (taken from the RFC) is used for
- * decoding.
- *
- * Char. number range | UTF-8 octet sequence
- * (hexadecimal) | (binary)
- * --------------------+------------------------------------
- * 0000 0000-0000 007F | 0xxxxxxx
- * 0000 0080-0000 07FF | 110xxxxx 10xxxxxx
- * 0000 0800-0000 FFFF | 1110xxxx 10xxxxxx 10xxxxxx
- * 0001 0000-0010 FFFF | 11110xxx 10xxxxxx 10xxxxxx 10xxxxxx
- *
- * Additionally, the characters in the range 0xD800-0xDFFF
- * are prohibited as they are reserved for use with UTF-16
- * surrogate pairs.
- */
-
- /* Determine the length of the UTF-8 sequence. */
-
- octet = parser->raw_buffer.pointer[0];
- width = (octet & 0x80) == 0x00 ? 1 :
- (octet & 0xE0) == 0xC0 ? 2 :
- (octet & 0xF0) == 0xE0 ? 3 :
- (octet & 0xF8) == 0xF0 ? 4 : 0;
-
- /* Check if the leading octet is valid. */
-
- if (!width)
- return yaml_parser_set_reader_error(parser,
- "invalid leading UTF-8 octet",
- parser->offset, octet);
-
- /* Check if the raw buffer contains an incomplete character. */
-
- if (width > raw_unread) {
- if (parser->eof) {
- return yaml_parser_set_reader_error(parser,
- "incomplete UTF-8 octet sequence",
- parser->offset, -1);
- }
- incomplete = 1;
- break;
- }
-
- /* Decode the leading octet. */
-
- value = (octet & 0x80) == 0x00 ? octet & 0x7F :
- (octet & 0xE0) == 0xC0 ? octet & 0x1F :
- (octet & 0xF0) == 0xE0 ? octet & 0x0F :
- (octet & 0xF8) == 0xF0 ? octet & 0x07 : 0;
-
- /* Check and decode the trailing octets. */
-
- for (k = 1; k < width; k ++)
- {
- octet = parser->raw_buffer.pointer[k];
-
- /* Check if the octet is valid. */
-
- if ((octet & 0xC0) != 0x80)
- return yaml_parser_set_reader_error(parser,
- "invalid trailing UTF-8 octet",
- parser->offset+k, octet);
-
- /* Decode the octet. */
-
- value = (value << 6) + (octet & 0x3F);
- }
-
- /* Check the length of the sequence against the value. */
-
- if (!((width == 1) ||
- (width == 2 && value >= 0x80) ||
- (width == 3 && value >= 0x800) ||
- (width == 4 && value >= 0x10000)))
- return yaml_parser_set_reader_error(parser,
- "invalid length of a UTF-8 sequence",
- parser->offset, -1);
-
- /* Check the range of the value. */
-
- if ((value >= 0xD800 && value <= 0xDFFF) || value > 0x10FFFF)
- return yaml_parser_set_reader_error(parser,
- "invalid Unicode character",
- parser->offset, value);
-
- break;
-
- case YAML_UTF16LE_ENCODING:
- case YAML_UTF16BE_ENCODING:
-
- low = (parser->encoding == YAML_UTF16LE_ENCODING ? 0 : 1);
- high = (parser->encoding == YAML_UTF16LE_ENCODING ? 1 : 0);
-
- /*
- * The UTF-16 encoding is not as simple as one might
- * naively think. Check RFC 2781
- * (http://www.ietf.org/rfc/rfc2781.txt).
- *
- * Normally, two subsequent bytes describe a Unicode
- * character. However a special technique (called a
- * surrogate pair) is used for specifying character
- * values larger than 0xFFFF.
- *
- * A surrogate pair consists of two pseudo-characters:
- * high surrogate area (0xD800-0xDBFF)
- * low surrogate area (0xDC00-0xDFFF)
- *
- * The following formulas are used for decoding
- * and encoding characters using surrogate pairs:
- *
- * U = U' + 0x10000 (0x01 00 00 <= U <= 0x10 FF FF)
- * U' = yyyyyyyyyyxxxxxxxxxx (0 <= U' <= 0x0F FF FF)
- * W1 = 110110yyyyyyyyyy
- * W2 = 110111xxxxxxxxxx
- *
- * where U is the character value, W1 is the high surrogate
- * area, W2 is the low surrogate area.
- */
-
- /* Check for incomplete UTF-16 character. */
-
- if (raw_unread < 2) {
- if (parser->eof) {
- return yaml_parser_set_reader_error(parser,
- "incomplete UTF-16 character",
- parser->offset, -1);
- }
- incomplete = 1;
- break;
- }
-
- /* Get the character. */
-
- value = parser->raw_buffer.pointer[low]
- + (parser->raw_buffer.pointer[high] << 8);
-
- /* Check for unexpected low surrogate area. */
-
- if ((value & 0xFC00) == 0xDC00)
- return yaml_parser_set_reader_error(parser,
- "unexpected low surrogate area",
- parser->offset, value);
-
- /* Check for a high surrogate area. */
-
- if ((value & 0xFC00) == 0xD800) {
-
- width = 4;
-
- /* Check for incomplete surrogate pair. */
-
- if (raw_unread < 4) {
- if (parser->eof) {
- return yaml_parser_set_reader_error(parser,
- "incomplete UTF-16 surrogate pair",
- parser->offset, -1);
- }
- incomplete = 1;
- break;
- }
-
- /* Get the next character. */
-
- value2 = parser->raw_buffer.pointer[low+2]
- + (parser->raw_buffer.pointer[high+2] << 8);
-
- /* Check for a low surrogate area. */
-
- if ((value2 & 0xFC00) != 0xDC00)
- return yaml_parser_set_reader_error(parser,
- "expected low surrogate area",
- parser->offset+2, value2);
-
- /* Generate the value of the surrogate pair. */
-
- value = 0x10000 + ((value & 0x3FF) << 10) + (value2 & 0x3FF);
- }
-
- else {
- width = 2;
- }
-
- break;
-
- default:
- assert(1); /* Impossible. */
- }
-
- /* Check if the raw buffer contains enough bytes to form a character. */
-
- if (incomplete) break;
-
- /*
- * Check if the character is in the allowed range:
- * #x9 | #xA | #xD | [#x20-#x7E] (8 bit)
- * | #x85 | [#xA0-#xD7FF] | [#xE000-#xFFFD] (16 bit)
- * | [#x10000-#x10FFFF] (32 bit)
- */
-
- if (! (value == 0x09 || value == 0x0A || value == 0x0D
- || (value >= 0x20 && value <= 0x7E)
- || (value == 0x85) || (value >= 0xA0 && value <= 0xD7FF)
- || (value >= 0xE000 && value <= 0xFFFD)
- || (value >= 0x10000 && value <= 0x10FFFF)))
- return yaml_parser_set_reader_error(parser,
- "control characters are not allowed",
- parser->offset, value);
-
- /* Move the raw pointers. */
-
- parser->raw_buffer.pointer += width;
- parser->offset += width;
-
- /* Finally put the character into the buffer. */
-
- /* 0000 0000-0000 007F -> 0xxxxxxx */
- if (value <= 0x7F) {
- *(parser->buffer.last++) = value;
- }
- /* 0000 0080-0000 07FF -> 110xxxxx 10xxxxxx */
- else if (value <= 0x7FF) {
- *(parser->buffer.last++) = 0xC0 + (value >> 6);
- *(parser->buffer.last++) = 0x80 + (value & 0x3F);
- }
- /* 0000 0800-0000 FFFF -> 1110xxxx 10xxxxxx 10xxxxxx */
- else if (value <= 0xFFFF) {
- *(parser->buffer.last++) = 0xE0 + (value >> 12);
- *(parser->buffer.last++) = 0x80 + ((value >> 6) & 0x3F);
- *(parser->buffer.last++) = 0x80 + (value & 0x3F);
- }
- /* 0001 0000-0010 FFFF -> 11110xxx 10xxxxxx 10xxxxxx 10xxxxxx */
- else {
- *(parser->buffer.last++) = 0xF0 + (value >> 18);
- *(parser->buffer.last++) = 0x80 + ((value >> 12) & 0x3F);
- *(parser->buffer.last++) = 0x80 + ((value >> 6) & 0x3F);
- *(parser->buffer.last++) = 0x80 + (value & 0x3F);
- }
-
- parser->unread ++;
- }
-
- /* On EOF, put NUL into the buffer and return. */
-
- if (parser->eof) {
- *(parser->buffer.last++) = '\0';
- parser->unread ++;
- return 1;
- }
-
- }
-
- if (parser->offset >= MAX_FILE_SIZE) {
- return yaml_parser_set_reader_error(parser, "input is too long",
- parser->offset, -1);
- }
-
- return 1;
-}
diff --git a/ext/psych/yaml/scanner.c b/ext/psych/yaml/scanner.c
deleted file mode 100644
index bb5d201274..0000000000
--- a/ext/psych/yaml/scanner.c
+++ /dev/null
@@ -1,3598 +0,0 @@
-
-/*
- * Introduction
- * ************
- *
- * The following notes assume that you are familiar with the YAML specification
- * (http://yaml.org/spec/cvs/current.html). We mostly follow it, although in
- * some cases we are less restrictive that it requires.
- *
- * The process of transforming a YAML stream into a sequence of events is
- * divided on two steps: Scanning and Parsing.
- *
- * The Scanner transforms the input stream into a sequence of tokens, while the
- * parser transform the sequence of tokens produced by the Scanner into a
- * sequence of parsing events.
- *
- * The Scanner is rather clever and complicated. The Parser, on the contrary,
- * is a straightforward implementation of a recursive-descendant parser (or,
- * LL(1) parser, as it is usually called).
- *
- * Actually there are two issues of Scanning that might be called "clever", the
- * rest is quite straightforward. The issues are "block collection start" and
- * "simple keys". Both issues are explained below in details.
- *
- * Here the Scanning step is explained and implemented. We start with the list
- * of all the tokens produced by the Scanner together with short descriptions.
- *
- * Now, tokens:
- *
- * STREAM-START(encoding) # The stream start.
- * STREAM-END # The stream end.
- * VERSION-DIRECTIVE(major,minor) # The '%YAML' directive.
- * TAG-DIRECTIVE(handle,prefix) # The '%TAG' directive.
- * DOCUMENT-START # '---'
- * DOCUMENT-END # '...'
- * BLOCK-SEQUENCE-START # Indentation increase denoting a block
- * BLOCK-MAPPING-START # sequence or a block mapping.
- * BLOCK-END # Indentation decrease.
- * FLOW-SEQUENCE-START # '['
- * FLOW-SEQUENCE-END # ']'
- * FLOW-MAPPING-START # '{'
- * FLOW-MAPPING-END # '}'
- * BLOCK-ENTRY # '-'
- * FLOW-ENTRY # ','
- * KEY # '?' or nothing (simple keys).
- * VALUE # ':'
- * ALIAS(anchor) # '*anchor'
- * ANCHOR(anchor) # '&anchor'
- * TAG(handle,suffix) # '!handle!suffix'
- * SCALAR(value,style) # A scalar.
- *
- * The following two tokens are "virtual" tokens denoting the beginning and the
- * end of the stream:
- *
- * STREAM-START(encoding)
- * STREAM-END
- *
- * We pass the information about the input stream encoding with the
- * STREAM-START token.
- *
- * The next two tokens are responsible for tags:
- *
- * VERSION-DIRECTIVE(major,minor)
- * TAG-DIRECTIVE(handle,prefix)
- *
- * Example:
- *
- * %YAML 1.1
- * %TAG ! !foo
- * %TAG !yaml! tag:yaml.org,2002:
- * ---
- *
- * The corresponding sequence of tokens:
- *
- * STREAM-START(utf-8)
- * VERSION-DIRECTIVE(1,1)
- * TAG-DIRECTIVE("!","!foo")
- * TAG-DIRECTIVE("!yaml","tag:yaml.org,2002:")
- * DOCUMENT-START
- * STREAM-END
- *
- * Note that the VERSION-DIRECTIVE and TAG-DIRECTIVE tokens occupy a whole
- * line.
- *
- * The document start and end indicators are represented by:
- *
- * DOCUMENT-START
- * DOCUMENT-END
- *
- * Note that if a YAML stream contains an implicit document (without '---'
- * and '...' indicators), no DOCUMENT-START and DOCUMENT-END tokens will be
- * produced.
- *
- * In the following examples, we present whole documents together with the
- * produced tokens.
- *
- * 1. An implicit document:
- *
- * 'a scalar'
- *
- * Tokens:
- *
- * STREAM-START(utf-8)
- * SCALAR("a scalar",single-quoted)
- * STREAM-END
- *
- * 2. An explicit document:
- *
- * ---
- * 'a scalar'
- * ...
- *
- * Tokens:
- *
- * STREAM-START(utf-8)
- * DOCUMENT-START
- * SCALAR("a scalar",single-quoted)
- * DOCUMENT-END
- * STREAM-END
- *
- * 3. Several documents in a stream:
- *
- * 'a scalar'
- * ---
- * 'another scalar'
- * ---
- * 'yet another scalar'
- *
- * Tokens:
- *
- * STREAM-START(utf-8)
- * SCALAR("a scalar",single-quoted)
- * DOCUMENT-START
- * SCALAR("another scalar",single-quoted)
- * DOCUMENT-START
- * SCALAR("yet another scalar",single-quoted)
- * STREAM-END
- *
- * We have already introduced the SCALAR token above. The following tokens are
- * used to describe aliases, anchors, tag, and scalars:
- *
- * ALIAS(anchor)
- * ANCHOR(anchor)
- * TAG(handle,suffix)
- * SCALAR(value,style)
- *
- * The following series of examples illustrate the usage of these tokens:
- *
- * 1. A recursive sequence:
- *
- * &A [ *A ]
- *
- * Tokens:
- *
- * STREAM-START(utf-8)
- * ANCHOR("A")
- * FLOW-SEQUENCE-START
- * ALIAS("A")
- * FLOW-SEQUENCE-END
- * STREAM-END
- *
- * 2. A tagged scalar:
- *
- * !!float "3.14" # A good approximation.
- *
- * Tokens:
- *
- * STREAM-START(utf-8)
- * TAG("!!","float")
- * SCALAR("3.14",double-quoted)
- * STREAM-END
- *
- * 3. Various scalar styles:
- *
- * --- # Implicit empty plain scalars do not produce tokens.
- * --- a plain scalar
- * --- 'a single-quoted scalar'
- * --- "a double-quoted scalar"
- * --- |-
- * a literal scalar
- * --- >-
- * a folded
- * scalar
- *
- * Tokens:
- *
- * STREAM-START(utf-8)
- * DOCUMENT-START
- * DOCUMENT-START
- * SCALAR("a plain scalar",plain)
- * DOCUMENT-START
- * SCALAR("a single-quoted scalar",single-quoted)
- * DOCUMENT-START
- * SCALAR("a double-quoted scalar",double-quoted)
- * DOCUMENT-START
- * SCALAR("a literal scalar",literal)
- * DOCUMENT-START
- * SCALAR("a folded scalar",folded)
- * STREAM-END
- *
- * Now it's time to review collection-related tokens. We will start with
- * flow collections:
- *
- * FLOW-SEQUENCE-START
- * FLOW-SEQUENCE-END
- * FLOW-MAPPING-START
- * FLOW-MAPPING-END
- * FLOW-ENTRY
- * KEY
- * VALUE
- *
- * The tokens FLOW-SEQUENCE-START, FLOW-SEQUENCE-END, FLOW-MAPPING-START, and
- * FLOW-MAPPING-END represent the indicators '[', ']', '{', and '}'
- * correspondingly. FLOW-ENTRY represent the ',' indicator. Finally the
- * indicators '?' and ':', which are used for denoting mapping keys and values,
- * are represented by the KEY and VALUE tokens.
- *
- * The following examples show flow collections:
- *
- * 1. A flow sequence:
- *
- * [item 1, item 2, item 3]
- *
- * Tokens:
- *
- * STREAM-START(utf-8)
- * FLOW-SEQUENCE-START
- * SCALAR("item 1",plain)
- * FLOW-ENTRY
- * SCALAR("item 2",plain)
- * FLOW-ENTRY
- * SCALAR("item 3",plain)
- * FLOW-SEQUENCE-END
- * STREAM-END
- *
- * 2. A flow mapping:
- *
- * {
- * a simple key: a value, # Note that the KEY token is produced.
- * ? a complex key: another value,
- * }
- *
- * Tokens:
- *
- * STREAM-START(utf-8)
- * FLOW-MAPPING-START
- * KEY
- * SCALAR("a simple key",plain)
- * VALUE
- * SCALAR("a value",plain)
- * FLOW-ENTRY
- * KEY
- * SCALAR("a complex key",plain)
- * VALUE
- * SCALAR("another value",plain)
- * FLOW-ENTRY
- * FLOW-MAPPING-END
- * STREAM-END
- *
- * A simple key is a key which is not denoted by the '?' indicator. Note that
- * the Scanner still produce the KEY token whenever it encounters a simple key.
- *
- * For scanning block collections, the following tokens are used (note that we
- * repeat KEY and VALUE here):
- *
- * BLOCK-SEQUENCE-START
- * BLOCK-MAPPING-START
- * BLOCK-END
- * BLOCK-ENTRY
- * KEY
- * VALUE
- *
- * The tokens BLOCK-SEQUENCE-START and BLOCK-MAPPING-START denote indentation
- * increase that precedes a block collection (cf. the INDENT token in Python).
- * The token BLOCK-END denote indentation decrease that ends a block collection
- * (cf. the DEDENT token in Python). However YAML has some syntax peculiarities
- * that makes detections of these tokens more complex.
- *
- * The tokens BLOCK-ENTRY, KEY, and VALUE are used to represent the indicators
- * '-', '?', and ':' correspondingly.
- *
- * The following examples show how the tokens BLOCK-SEQUENCE-START,
- * BLOCK-MAPPING-START, and BLOCK-END are emitted by the Scanner:
- *
- * 1. Block sequences:
- *
- * - item 1
- * - item 2
- * -
- * - item 3.1
- * - item 3.2
- * -
- * key 1: value 1
- * key 2: value 2
- *
- * Tokens:
- *
- * STREAM-START(utf-8)
- * BLOCK-SEQUENCE-START
- * BLOCK-ENTRY
- * SCALAR("item 1",plain)
- * BLOCK-ENTRY
- * SCALAR("item 2",plain)
- * BLOCK-ENTRY
- * BLOCK-SEQUENCE-START
- * BLOCK-ENTRY
- * SCALAR("item 3.1",plain)
- * BLOCK-ENTRY
- * SCALAR("item 3.2",plain)
- * BLOCK-END
- * BLOCK-ENTRY
- * BLOCK-MAPPING-START
- * KEY
- * SCALAR("key 1",plain)
- * VALUE
- * SCALAR("value 1",plain)
- * KEY
- * SCALAR("key 2",plain)
- * VALUE
- * SCALAR("value 2",plain)
- * BLOCK-END
- * BLOCK-END
- * STREAM-END
- *
- * 2. Block mappings:
- *
- * a simple key: a value # The KEY token is produced here.
- * ? a complex key
- * : another value
- * a mapping:
- * key 1: value 1
- * key 2: value 2
- * a sequence:
- * - item 1
- * - item 2
- *
- * Tokens:
- *
- * STREAM-START(utf-8)
- * BLOCK-MAPPING-START
- * KEY
- * SCALAR("a simple key",plain)
- * VALUE
- * SCALAR("a value",plain)
- * KEY
- * SCALAR("a complex key",plain)
- * VALUE
- * SCALAR("another value",plain)
- * KEY
- * SCALAR("a mapping",plain)
- * VALUE
- * BLOCK-MAPPING-START
- * KEY
- * SCALAR("key 1",plain)
- * VALUE
- * SCALAR("value 1",plain)
- * KEY
- * SCALAR("key 2",plain)
- * VALUE
- * SCALAR("value 2",plain)
- * BLOCK-END
- * KEY
- * SCALAR("a sequence",plain)
- * VALUE
- * BLOCK-SEQUENCE-START
- * BLOCK-ENTRY
- * SCALAR("item 1",plain)
- * BLOCK-ENTRY
- * SCALAR("item 2",plain)
- * BLOCK-END
- * BLOCK-END
- * STREAM-END
- *
- * YAML does not always require to start a new block collection from a new
- * line. If the current line contains only '-', '?', and ':' indicators, a new
- * block collection may start at the current line. The following examples
- * illustrate this case:
- *
- * 1. Collections in a sequence:
- *
- * - - item 1
- * - item 2
- * - key 1: value 1
- * key 2: value 2
- * - ? complex key
- * : complex value
- *
- * Tokens:
- *
- * STREAM-START(utf-8)
- * BLOCK-SEQUENCE-START
- * BLOCK-ENTRY
- * BLOCK-SEQUENCE-START
- * BLOCK-ENTRY
- * SCALAR("item 1",plain)
- * BLOCK-ENTRY
- * SCALAR("item 2",plain)
- * BLOCK-END
- * BLOCK-ENTRY
- * BLOCK-MAPPING-START
- * KEY
- * SCALAR("key 1",plain)
- * VALUE
- * SCALAR("value 1",plain)
- * KEY
- * SCALAR("key 2",plain)
- * VALUE
- * SCALAR("value 2",plain)
- * BLOCK-END
- * BLOCK-ENTRY
- * BLOCK-MAPPING-START
- * KEY
- * SCALAR("complex key")
- * VALUE
- * SCALAR("complex value")
- * BLOCK-END
- * BLOCK-END
- * STREAM-END
- *
- * 2. Collections in a mapping:
- *
- * ? a sequence
- * : - item 1
- * - item 2
- * ? a mapping
- * : key 1: value 1
- * key 2: value 2
- *
- * Tokens:
- *
- * STREAM-START(utf-8)
- * BLOCK-MAPPING-START
- * KEY
- * SCALAR("a sequence",plain)
- * VALUE
- * BLOCK-SEQUENCE-START
- * BLOCK-ENTRY
- * SCALAR("item 1",plain)
- * BLOCK-ENTRY
- * SCALAR("item 2",plain)
- * BLOCK-END
- * KEY
- * SCALAR("a mapping",plain)
- * VALUE
- * BLOCK-MAPPING-START
- * KEY
- * SCALAR("key 1",plain)
- * VALUE
- * SCALAR("value 1",plain)
- * KEY
- * SCALAR("key 2",plain)
- * VALUE
- * SCALAR("value 2",plain)
- * BLOCK-END
- * BLOCK-END
- * STREAM-END
- *
- * YAML also permits non-indented sequences if they are included into a block
- * mapping. In this case, the token BLOCK-SEQUENCE-START is not produced:
- *
- * key:
- * - item 1 # BLOCK-SEQUENCE-START is NOT produced here.
- * - item 2
- *
- * Tokens:
- *
- * STREAM-START(utf-8)
- * BLOCK-MAPPING-START
- * KEY
- * SCALAR("key",plain)
- * VALUE
- * BLOCK-ENTRY
- * SCALAR("item 1",plain)
- * BLOCK-ENTRY
- * SCALAR("item 2",plain)
- * BLOCK-END
- */
-
-#include "yaml_private.h"
-
-/*
- * Ensure that the buffer contains the required number of characters.
- * Return 1 on success, 0 on failure (reader error or memory error).
- */
-
-#define CACHE(parser,length) \
- (parser->unread >= (length) \
- ? 1 \
- : yaml_parser_update_buffer(parser, (length)))
-
-/*
- * Advance the buffer pointer.
- */
-
-#define SKIP(parser) \
- (parser->mark.index ++, \
- parser->mark.column ++, \
- parser->unread --, \
- parser->buffer.pointer += WIDTH(parser->buffer))
-
-#define SKIP_LINE(parser) \
- (IS_CRLF(parser->buffer) ? \
- (parser->mark.index += 2, \
- parser->mark.column = 0, \
- parser->mark.line ++, \
- parser->unread -= 2, \
- parser->buffer.pointer += 2) : \
- IS_BREAK(parser->buffer) ? \
- (parser->mark.index ++, \
- parser->mark.column = 0, \
- parser->mark.line ++, \
- parser->unread --, \
- parser->buffer.pointer += WIDTH(parser->buffer)) : 0)
-
-/*
- * Copy a character to a string buffer and advance pointers.
- */
-
-#define READ(parser,string) \
- (STRING_EXTEND(parser,string) ? \
- (COPY(string,parser->buffer), \
- parser->mark.index ++, \
- parser->mark.column ++, \
- parser->unread --, \
- 1) : 0)
-
-/*
- * Copy a line break character to a string buffer and advance pointers.
- */
-
-#define READ_LINE(parser,string) \
- (STRING_EXTEND(parser,string) ? \
- (((CHECK_AT(parser->buffer,'\r',0) \
- && CHECK_AT(parser->buffer,'\n',1)) ? /* CR LF -> LF */ \
- (*((string).pointer++) = (yaml_char_t) '\n', \
- parser->buffer.pointer += 2, \
- parser->mark.index += 2, \
- parser->mark.column = 0, \
- parser->mark.line ++, \
- parser->unread -= 2) : \
- (CHECK_AT(parser->buffer,'\r',0) \
- || CHECK_AT(parser->buffer,'\n',0)) ? /* CR|LF -> LF */ \
- (*((string).pointer++) = (yaml_char_t) '\n', \
- parser->buffer.pointer ++, \
- parser->mark.index ++, \
- parser->mark.column = 0, \
- parser->mark.line ++, \
- parser->unread --) : \
- (CHECK_AT(parser->buffer,'\xC2',0) \
- && CHECK_AT(parser->buffer,'\x85',1)) ? /* NEL -> LF */ \
- (*((string).pointer++) = (yaml_char_t) '\n', \
- parser->buffer.pointer += 2, \
- parser->mark.index ++, \
- parser->mark.column = 0, \
- parser->mark.line ++, \
- parser->unread --) : \
- (CHECK_AT(parser->buffer,'\xE2',0) && \
- CHECK_AT(parser->buffer,'\x80',1) && \
- (CHECK_AT(parser->buffer,'\xA8',2) || \
- CHECK_AT(parser->buffer,'\xA9',2))) ? /* LS|PS -> LS|PS */ \
- (*((string).pointer++) = *(parser->buffer.pointer++), \
- *((string).pointer++) = *(parser->buffer.pointer++), \
- *((string).pointer++) = *(parser->buffer.pointer++), \
- parser->mark.index ++, \
- parser->mark.column = 0, \
- parser->mark.line ++, \
- parser->unread --) : 0), \
- 1) : 0)
-
-/*
- * Public API declarations.
- */
-
-YAML_DECLARE(int)
-yaml_parser_scan(yaml_parser_t *parser, yaml_token_t *token);
-
-/*
- * Error handling.
- */
-
-static int
-yaml_parser_set_scanner_error(yaml_parser_t *parser, const char *context,
- yaml_mark_t context_mark, const char *problem);
-
-/*
- * High-level token API.
- */
-
-YAML_DECLARE(int)
-yaml_parser_fetch_more_tokens(yaml_parser_t *parser);
-
-static int
-yaml_parser_fetch_next_token(yaml_parser_t *parser);
-
-/*
- * Potential simple keys.
- */
-
-static int
-yaml_parser_stale_simple_keys(yaml_parser_t *parser);
-
-static int
-yaml_parser_save_simple_key(yaml_parser_t *parser);
-
-static int
-yaml_parser_remove_simple_key(yaml_parser_t *parser);
-
-static int
-yaml_parser_increase_flow_level(yaml_parser_t *parser);
-
-static int
-yaml_parser_decrease_flow_level(yaml_parser_t *parser);
-
-/*
- * Indentation treatment.
- */
-
-static int
-yaml_parser_roll_indent(yaml_parser_t *parser, ptrdiff_t column,
- ptrdiff_t number, yaml_token_type_t type, yaml_mark_t mark);
-
-static int
-yaml_parser_unroll_indent(yaml_parser_t *parser, ptrdiff_t column);
-
-/*
- * Token fetchers.
- */
-
-static int
-yaml_parser_fetch_stream_start(yaml_parser_t *parser);
-
-static int
-yaml_parser_fetch_stream_end(yaml_parser_t *parser);
-
-static int
-yaml_parser_fetch_directive(yaml_parser_t *parser);
-
-static int
-yaml_parser_fetch_document_indicator(yaml_parser_t *parser,
- yaml_token_type_t type);
-
-static int
-yaml_parser_fetch_flow_collection_start(yaml_parser_t *parser,
- yaml_token_type_t type);
-
-static int
-yaml_parser_fetch_flow_collection_end(yaml_parser_t *parser,
- yaml_token_type_t type);
-
-static int
-yaml_parser_fetch_flow_entry(yaml_parser_t *parser);
-
-static int
-yaml_parser_fetch_block_entry(yaml_parser_t *parser);
-
-static int
-yaml_parser_fetch_key(yaml_parser_t *parser);
-
-static int
-yaml_parser_fetch_value(yaml_parser_t *parser);
-
-static int
-yaml_parser_fetch_anchor(yaml_parser_t *parser, yaml_token_type_t type);
-
-static int
-yaml_parser_fetch_tag(yaml_parser_t *parser);
-
-static int
-yaml_parser_fetch_block_scalar(yaml_parser_t *parser, int literal);
-
-static int
-yaml_parser_fetch_flow_scalar(yaml_parser_t *parser, int single);
-
-static int
-yaml_parser_fetch_plain_scalar(yaml_parser_t *parser);
-
-/*
- * Token scanners.
- */
-
-static int
-yaml_parser_scan_to_next_token(yaml_parser_t *parser);
-
-static int
-yaml_parser_scan_directive(yaml_parser_t *parser, yaml_token_t *token);
-
-static int
-yaml_parser_scan_directive_name(yaml_parser_t *parser,
- yaml_mark_t start_mark, yaml_char_t **name);
-
-static int
-yaml_parser_scan_version_directive_value(yaml_parser_t *parser,
- yaml_mark_t start_mark, int *major, int *minor);
-
-static int
-yaml_parser_scan_version_directive_number(yaml_parser_t *parser,
- yaml_mark_t start_mark, int *number);
-
-static int
-yaml_parser_scan_tag_directive_value(yaml_parser_t *parser,
- yaml_mark_t mark, yaml_char_t **handle, yaml_char_t **prefix);
-
-static int
-yaml_parser_scan_anchor(yaml_parser_t *parser, yaml_token_t *token,
- yaml_token_type_t type);
-
-static int
-yaml_parser_scan_tag(yaml_parser_t *parser, yaml_token_t *token);
-
-static int
-yaml_parser_scan_tag_handle(yaml_parser_t *parser, int directive,
- yaml_mark_t start_mark, yaml_char_t **handle);
-
-static int
-yaml_parser_scan_tag_uri(yaml_parser_t *parser, int uri_char, int directive,
- yaml_char_t *head, yaml_mark_t start_mark, yaml_char_t **uri);
-
-static int
-yaml_parser_scan_uri_escapes(yaml_parser_t *parser, int directive,
- yaml_mark_t start_mark, yaml_string_t *string);
-
-static int
-yaml_parser_scan_block_scalar(yaml_parser_t *parser, yaml_token_t *token,
- int literal);
-
-static int
-yaml_parser_scan_block_scalar_breaks(yaml_parser_t *parser,
- int *indent, yaml_string_t *breaks,
- yaml_mark_t start_mark, yaml_mark_t *end_mark);
-
-static int
-yaml_parser_scan_flow_scalar(yaml_parser_t *parser, yaml_token_t *token,
- int single);
-
-static int
-yaml_parser_scan_plain_scalar(yaml_parser_t *parser, yaml_token_t *token);
-
-/*
- * Get the next token.
- */
-
-YAML_DECLARE(int)
-yaml_parser_scan(yaml_parser_t *parser, yaml_token_t *token)
-{
- assert(parser); /* Non-NULL parser object is expected. */
- assert(token); /* Non-NULL token object is expected. */
-
- /* Erase the token object. */
-
- memset(token, 0, sizeof(yaml_token_t));
-
- /* No tokens after STREAM-END or error. */
-
- if (parser->stream_end_produced || parser->error) {
- return 1;
- }
-
- /* Ensure that the tokens queue contains enough tokens. */
-
- if (!parser->token_available) {
- if (!yaml_parser_fetch_more_tokens(parser))
- return 0;
- }
-
- /* Fetch the next token from the queue. */
-
- *token = DEQUEUE(parser, parser->tokens);
- parser->token_available = 0;
- parser->tokens_parsed ++;
-
- if (token->type == YAML_STREAM_END_TOKEN) {
- parser->stream_end_produced = 1;
- }
-
- return 1;
-}
-
-/*
- * Set the scanner error and return 0.
- */
-
-static int
-yaml_parser_set_scanner_error(yaml_parser_t *parser, const char *context,
- yaml_mark_t context_mark, const char *problem)
-{
- parser->error = YAML_SCANNER_ERROR;
- parser->context = context;
- parser->context_mark = context_mark;
- parser->problem = problem;
- parser->problem_mark = parser->mark;
-
- return 0;
-}
-
-/*
- * Ensure that the tokens queue contains at least one token which can be
- * returned to the Parser.
- */
-
-YAML_DECLARE(int)
-yaml_parser_fetch_more_tokens(yaml_parser_t *parser)
-{
- int need_more_tokens;
-
- /* While we need more tokens to fetch, do it. */
-
- while (1)
- {
- /*
- * Check if we really need to fetch more tokens.
- */
-
- need_more_tokens = 0;
-
- if (parser->tokens.head == parser->tokens.tail)
- {
- /* Queue is empty. */
-
- need_more_tokens = 1;
- }
- else
- {
- yaml_simple_key_t *simple_key;
-
- /* Check if any potential simple key may occupy the head position. */
-
- if (!yaml_parser_stale_simple_keys(parser))
- return 0;
-
- for (simple_key = parser->simple_keys.start;
- simple_key != parser->simple_keys.top; simple_key++) {
- if (simple_key->possible
- && simple_key->token_number == parser->tokens_parsed) {
- need_more_tokens = 1;
- break;
- }
- }
- }
-
- /* We are finished. */
-
- if (!need_more_tokens)
- break;
-
- /* Fetch the next token. */
-
- if (!yaml_parser_fetch_next_token(parser))
- return 0;
- }
-
- parser->token_available = 1;
-
- return 1;
-}
-
-/*
- * The dispatcher for token fetchers.
- */
-
-static int
-yaml_parser_fetch_next_token(yaml_parser_t *parser)
-{
- /* Ensure that the buffer is initialized. */
-
- if (!CACHE(parser, 1))
- return 0;
-
- /* Check if we just started scanning. Fetch STREAM-START then. */
-
- if (!parser->stream_start_produced)
- return yaml_parser_fetch_stream_start(parser);
-
- /* Eat whitespaces and comments until we reach the next token. */
-
- if (!yaml_parser_scan_to_next_token(parser))
- return 0;
-
- /* Remove obsolete potential simple keys. */
-
- if (!yaml_parser_stale_simple_keys(parser))
- return 0;
-
- /* Check the indentation level against the current column. */
-
- if (!yaml_parser_unroll_indent(parser, parser->mark.column))
- return 0;
-
- /*
- * Ensure that the buffer contains at least 4 characters. 4 is the length
- * of the longest indicators ('--- ' and '... ').
- */
-
- if (!CACHE(parser, 4))
- return 0;
-
- /* Is it the end of the stream? */
-
- if (IS_Z(parser->buffer))
- return yaml_parser_fetch_stream_end(parser);
-
- /* Is it a directive? */
-
- if (parser->mark.column == 0 && CHECK(parser->buffer, '%'))
- return yaml_parser_fetch_directive(parser);
-
- /* Is it the document start indicator? */
-
- if (parser->mark.column == 0
- && CHECK_AT(parser->buffer, '-', 0)
- && CHECK_AT(parser->buffer, '-', 1)
- && CHECK_AT(parser->buffer, '-', 2)
- && IS_BLANKZ_AT(parser->buffer, 3))
- return yaml_parser_fetch_document_indicator(parser,
- YAML_DOCUMENT_START_TOKEN);
-
- /* Is it the document end indicator? */
-
- if (parser->mark.column == 0
- && CHECK_AT(parser->buffer, '.', 0)
- && CHECK_AT(parser->buffer, '.', 1)
- && CHECK_AT(parser->buffer, '.', 2)
- && IS_BLANKZ_AT(parser->buffer, 3))
- return yaml_parser_fetch_document_indicator(parser,
- YAML_DOCUMENT_END_TOKEN);
-
- /* Is it the flow sequence start indicator? */
-
- if (CHECK(parser->buffer, '['))
- return yaml_parser_fetch_flow_collection_start(parser,
- YAML_FLOW_SEQUENCE_START_TOKEN);
-
- /* Is it the flow mapping start indicator? */
-
- if (CHECK(parser->buffer, '{'))
- return yaml_parser_fetch_flow_collection_start(parser,
- YAML_FLOW_MAPPING_START_TOKEN);
-
- /* Is it the flow sequence end indicator? */
-
- if (CHECK(parser->buffer, ']'))
- return yaml_parser_fetch_flow_collection_end(parser,
- YAML_FLOW_SEQUENCE_END_TOKEN);
-
- /* Is it the flow mapping end indicator? */
-
- if (CHECK(parser->buffer, '}'))
- return yaml_parser_fetch_flow_collection_end(parser,
- YAML_FLOW_MAPPING_END_TOKEN);
-
- /* Is it the flow entry indicator? */
-
- if (CHECK(parser->buffer, ','))
- return yaml_parser_fetch_flow_entry(parser);
-
- /* Is it the block entry indicator? */
-
- if (CHECK(parser->buffer, '-') && IS_BLANKZ_AT(parser->buffer, 1))
- return yaml_parser_fetch_block_entry(parser);
-
- /* Is it the key indicator? */
-
- if (CHECK(parser->buffer, '?')
- && (parser->flow_level || IS_BLANKZ_AT(parser->buffer, 1)))
- return yaml_parser_fetch_key(parser);
-
- /* Is it the value indicator? */
-
- if (CHECK(parser->buffer, ':')
- && (parser->flow_level || IS_BLANKZ_AT(parser->buffer, 1)))
- return yaml_parser_fetch_value(parser);
-
- /* Is it an alias? */
-
- if (CHECK(parser->buffer, '*'))
- return yaml_parser_fetch_anchor(parser, YAML_ALIAS_TOKEN);
-
- /* Is it an anchor? */
-
- if (CHECK(parser->buffer, '&'))
- return yaml_parser_fetch_anchor(parser, YAML_ANCHOR_TOKEN);
-
- /* Is it a tag? */
-
- if (CHECK(parser->buffer, '!'))
- return yaml_parser_fetch_tag(parser);
-
- /* Is it a literal scalar? */
-
- if (CHECK(parser->buffer, '|') && !parser->flow_level)
- return yaml_parser_fetch_block_scalar(parser, 1);
-
- /* Is it a folded scalar? */
-
- if (CHECK(parser->buffer, '>') && !parser->flow_level)
- return yaml_parser_fetch_block_scalar(parser, 0);
-
- /* Is it a single-quoted scalar? */
-
- if (CHECK(parser->buffer, '\''))
- return yaml_parser_fetch_flow_scalar(parser, 1);
-
- /* Is it a double-quoted scalar? */
-
- if (CHECK(parser->buffer, '"'))
- return yaml_parser_fetch_flow_scalar(parser, 0);
-
- /*
- * Is it a plain scalar?
- *
- * A plain scalar may start with any non-blank characters except
- *
- * '-', '?', ':', ',', '[', ']', '{', '}',
- * '#', '&', '*', '!', '|', '>', '\'', '\"',
- * '%', '@', '`'.
- *
- * In the block context (and, for the '-' indicator, in the flow context
- * too), it may also start with the characters
- *
- * '-', '?', ':'
- *
- * if it is followed by a non-space character.
- *
- * The last rule is more restrictive than the specification requires.
- */
-
- if (!(IS_BLANKZ(parser->buffer) || CHECK(parser->buffer, '-')
- || CHECK(parser->buffer, '?') || CHECK(parser->buffer, ':')
- || CHECK(parser->buffer, ',') || CHECK(parser->buffer, '[')
- || CHECK(parser->buffer, ']') || CHECK(parser->buffer, '{')
- || CHECK(parser->buffer, '}') || CHECK(parser->buffer, '#')
- || CHECK(parser->buffer, '&') || CHECK(parser->buffer, '*')
- || CHECK(parser->buffer, '!') || CHECK(parser->buffer, '|')
- || CHECK(parser->buffer, '>') || CHECK(parser->buffer, '\'')
- || CHECK(parser->buffer, '"') || CHECK(parser->buffer, '%')
- || CHECK(parser->buffer, '@') || CHECK(parser->buffer, '`')) ||
- (CHECK(parser->buffer, '-') && !IS_BLANK_AT(parser->buffer, 1)) ||
- (!parser->flow_level &&
- (CHECK(parser->buffer, '?') || CHECK(parser->buffer, ':'))
- && !IS_BLANKZ_AT(parser->buffer, 1)))
- return yaml_parser_fetch_plain_scalar(parser);
-
- /*
- * If we don't determine the token type so far, it is an error.
- */
-
- return yaml_parser_set_scanner_error(parser,
- "while scanning for the next token", parser->mark,
- "found character that cannot start any token");
-}
-
-/*
- * Check the list of potential simple keys and remove the positions that
- * cannot contain simple keys anymore.
- */
-
-static int
-yaml_parser_stale_simple_keys(yaml_parser_t *parser)
-{
- yaml_simple_key_t *simple_key;
-
- /* Check for a potential simple key for each flow level. */
-
- for (simple_key = parser->simple_keys.start;
- simple_key != parser->simple_keys.top; simple_key ++)
- {
- /*
- * The specification requires that a simple key
- *
- * - is limited to a single line,
- * - is shorter than 1024 characters.
- */
-
- if (simple_key->possible
- && (simple_key->mark.line < parser->mark.line
- || simple_key->mark.index+1024 < parser->mark.index)) {
-
- /* Check if the potential simple key to be removed is required. */
-
- if (simple_key->required) {
- return yaml_parser_set_scanner_error(parser,
- "while scanning a simple key", simple_key->mark,
- "could not find expected ':'");
- }
-
- simple_key->possible = 0;
- }
- }
-
- return 1;
-}
-
-/*
- * Check if a simple key may start at the current position and add it if
- * needed.
- */
-
-static int
-yaml_parser_save_simple_key(yaml_parser_t *parser)
-{
- /*
- * A simple key is required at the current position if the scanner is in
- * the block context and the current column coincides with the indentation
- * level.
- */
-
- int required = (!parser->flow_level
- && parser->indent == (ptrdiff_t)parser->mark.column);
-
- /*
- * If the current position may start a simple key, save it.
- */
-
- if (parser->simple_key_allowed)
- {
- yaml_simple_key_t simple_key;
- simple_key.possible = 1;
- simple_key.required = required;
- simple_key.token_number =
- parser->tokens_parsed + (parser->tokens.tail - parser->tokens.head);
- simple_key.mark = parser->mark;
-
- if (!yaml_parser_remove_simple_key(parser)) return 0;
-
- *(parser->simple_keys.top-1) = simple_key;
- }
-
- return 1;
-}
-
-/*
- * Remove a potential simple key at the current flow level.
- */
-
-static int
-yaml_parser_remove_simple_key(yaml_parser_t *parser)
-{
- yaml_simple_key_t *simple_key = parser->simple_keys.top-1;
-
- if (simple_key->possible)
- {
- /* If the key is required, it is an error. */
-
- if (simple_key->required) {
- return yaml_parser_set_scanner_error(parser,
- "while scanning a simple key", simple_key->mark,
- "could not find expected ':'");
- }
- }
-
- /* Remove the key from the stack. */
-
- simple_key->possible = 0;
-
- return 1;
-}
-
-/*
- * Increase the flow level and resize the simple key list if needed.
- */
-
-static int
-yaml_parser_increase_flow_level(yaml_parser_t *parser)
-{
- yaml_simple_key_t empty_simple_key = { 0, 0, 0, { 0, 0, 0 } };
-
- /* Reset the simple key on the next level. */
-
- if (!PUSH(parser, parser->simple_keys, empty_simple_key))
- return 0;
-
- /* Increase the flow level. */
-
- if (parser->flow_level == INT_MAX) {
- parser->error = YAML_MEMORY_ERROR;
- return 0;
- }
-
- parser->flow_level++;
-
- return 1;
-}
-
-/*
- * Decrease the flow level.
- */
-
-static int
-yaml_parser_decrease_flow_level(yaml_parser_t *parser)
-{
- if (parser->flow_level) {
- parser->flow_level --;
- (void)POP(parser, parser->simple_keys);
- }
-
- return 1;
-}
-
-/*
- * Push the current indentation level to the stack and set the new level
- * the current column is greater than the indentation level. In this case,
- * append or insert the specified token into the token queue.
- *
- */
-
-static int
-yaml_parser_roll_indent(yaml_parser_t *parser, ptrdiff_t column,
- ptrdiff_t number, yaml_token_type_t type, yaml_mark_t mark)
-{
- yaml_token_t token;
-
- /* In the flow context, do nothing. */
-
- if (parser->flow_level)
- return 1;
-
- if (parser->indent < column)
- {
- /*
- * Push the current indentation level to the stack and set the new
- * indentation level.
- */
-
- if (!PUSH(parser, parser->indents, parser->indent))
- return 0;
-
- if (column > INT_MAX) {
- parser->error = YAML_MEMORY_ERROR;
- return 0;
- }
-
- parser->indent = (int)column;
-
- /* Create a token and insert it into the queue. */
-
- TOKEN_INIT(token, type, mark, mark);
-
- if (number == -1) {
- if (!ENQUEUE(parser, parser->tokens, token))
- return 0;
- }
- else {
- if (!QUEUE_INSERT(parser,
- parser->tokens, number - parser->tokens_parsed, token))
- return 0;
- }
- }
-
- return 1;
-}
-
-/*
- * Pop indentation levels from the indents stack until the current level
- * becomes less or equal to the column. For each indentation level, append
- * the BLOCK-END token.
- */
-
-
-static int
-yaml_parser_unroll_indent(yaml_parser_t *parser, ptrdiff_t column)
-{
- yaml_token_t token;
-
- /* In the flow context, do nothing. */
-
- if (parser->flow_level)
- return 1;
-
- /* Loop through the indentation levels in the stack. */
-
- while (parser->indent > column)
- {
- /* Create a token and append it to the queue. */
-
- TOKEN_INIT(token, YAML_BLOCK_END_TOKEN, parser->mark, parser->mark);
-
- if (!ENQUEUE(parser, parser->tokens, token))
- return 0;
-
- /* Pop the indentation level. */
-
- parser->indent = POP(parser, parser->indents);
- }
-
- return 1;
-}
-
-/*
- * Initialize the scanner and produce the STREAM-START token.
- */
-
-static int
-yaml_parser_fetch_stream_start(yaml_parser_t *parser)
-{
- yaml_simple_key_t simple_key = { 0, 0, 0, { 0, 0, 0 } };
- yaml_token_t token;
-
- /* Set the initial indentation. */
-
- parser->indent = -1;
-
- /* Initialize the simple key stack. */
-
- if (!PUSH(parser, parser->simple_keys, simple_key))
- return 0;
-
- /* A simple key is allowed at the beginning of the stream. */
-
- parser->simple_key_allowed = 1;
-
- /* We have started. */
-
- parser->stream_start_produced = 1;
-
- /* Create the STREAM-START token and append it to the queue. */
-
- STREAM_START_TOKEN_INIT(token, parser->encoding,
- parser->mark, parser->mark);
-
- if (!ENQUEUE(parser, parser->tokens, token))
- return 0;
-
- return 1;
-}
-
-/*
- * Produce the STREAM-END token and shut down the scanner.
- */
-
-static int
-yaml_parser_fetch_stream_end(yaml_parser_t *parser)
-{
- yaml_token_t token;
-
- /* Force new line. */
-
- if (parser->mark.column != 0) {
- parser->mark.column = 0;
- parser->mark.line ++;
- }
-
- /* Reset the indentation level. */
-
- if (!yaml_parser_unroll_indent(parser, -1))
- return 0;
-
- /* Reset simple keys. */
-
- if (!yaml_parser_remove_simple_key(parser))
- return 0;
-
- parser->simple_key_allowed = 0;
-
- /* Create the STREAM-END token and append it to the queue. */
-
- STREAM_END_TOKEN_INIT(token, parser->mark, parser->mark);
-
- if (!ENQUEUE(parser, parser->tokens, token))
- return 0;
-
- return 1;
-}
-
-/*
- * Produce a VERSION-DIRECTIVE or TAG-DIRECTIVE token.
- */
-
-static int
-yaml_parser_fetch_directive(yaml_parser_t *parser)
-{
- yaml_token_t token;
-
- /* Reset the indentation level. */
-
- if (!yaml_parser_unroll_indent(parser, -1))
- return 0;
-
- /* Reset simple keys. */
-
- if (!yaml_parser_remove_simple_key(parser))
- return 0;
-
- parser->simple_key_allowed = 0;
-
- /* Create the YAML-DIRECTIVE or TAG-DIRECTIVE token. */
-
- if (!yaml_parser_scan_directive(parser, &token))
- return 0;
-
- /* Append the token to the queue. */
-
- if (!ENQUEUE(parser, parser->tokens, token)) {
- yaml_token_delete(&token);
- return 0;
- }
-
- return 1;
-}
-
-/*
- * Produce the DOCUMENT-START or DOCUMENT-END token.
- */
-
-static int
-yaml_parser_fetch_document_indicator(yaml_parser_t *parser,
- yaml_token_type_t type)
-{
- yaml_mark_t start_mark, end_mark;
- yaml_token_t token;
-
- /* Reset the indentation level. */
-
- if (!yaml_parser_unroll_indent(parser, -1))
- return 0;
-
- /* Reset simple keys. */
-
- if (!yaml_parser_remove_simple_key(parser))
- return 0;
-
- parser->simple_key_allowed = 0;
-
- /* Consume the token. */
-
- start_mark = parser->mark;
-
- SKIP(parser);
- SKIP(parser);
- SKIP(parser);
-
- end_mark = parser->mark;
-
- /* Create the DOCUMENT-START or DOCUMENT-END token. */
-
- TOKEN_INIT(token, type, start_mark, end_mark);
-
- /* Append the token to the queue. */
-
- if (!ENQUEUE(parser, parser->tokens, token))
- return 0;
-
- return 1;
-}
-
-/*
- * Produce the FLOW-SEQUENCE-START or FLOW-MAPPING-START token.
- */
-
-static int
-yaml_parser_fetch_flow_collection_start(yaml_parser_t *parser,
- yaml_token_type_t type)
-{
- yaml_mark_t start_mark, end_mark;
- yaml_token_t token;
-
- /* The indicators '[' and '{' may start a simple key. */
-
- if (!yaml_parser_save_simple_key(parser))
- return 0;
-
- /* Increase the flow level. */
-
- if (!yaml_parser_increase_flow_level(parser))
- return 0;
-
- /* A simple key may follow the indicators '[' and '{'. */
-
- parser->simple_key_allowed = 1;
-
- /* Consume the token. */
-
- start_mark = parser->mark;
- SKIP(parser);
- end_mark = parser->mark;
-
- /* Create the FLOW-SEQUENCE-START of FLOW-MAPPING-START token. */
-
- TOKEN_INIT(token, type, start_mark, end_mark);
-
- /* Append the token to the queue. */
-
- if (!ENQUEUE(parser, parser->tokens, token))
- return 0;
-
- return 1;
-}
-
-/*
- * Produce the FLOW-SEQUENCE-END or FLOW-MAPPING-END token.
- */
-
-static int
-yaml_parser_fetch_flow_collection_end(yaml_parser_t *parser,
- yaml_token_type_t type)
-{
- yaml_mark_t start_mark, end_mark;
- yaml_token_t token;
-
- /* Reset any potential simple key on the current flow level. */
-
- if (!yaml_parser_remove_simple_key(parser))
- return 0;
-
- /* Decrease the flow level. */
-
- if (!yaml_parser_decrease_flow_level(parser))
- return 0;
-
- /* No simple keys after the indicators ']' and '}'. */
-
- parser->simple_key_allowed = 0;
-
- /* Consume the token. */
-
- start_mark = parser->mark;
- SKIP(parser);
- end_mark = parser->mark;
-
- /* Create the FLOW-SEQUENCE-END of FLOW-MAPPING-END token. */
-
- TOKEN_INIT(token, type, start_mark, end_mark);
-
- /* Append the token to the queue. */
-
- if (!ENQUEUE(parser, parser->tokens, token))
- return 0;
-
- return 1;
-}
-
-/*
- * Produce the FLOW-ENTRY token.
- */
-
-static int
-yaml_parser_fetch_flow_entry(yaml_parser_t *parser)
-{
- yaml_mark_t start_mark, end_mark;
- yaml_token_t token;
-
- /* Reset any potential simple keys on the current flow level. */
-
- if (!yaml_parser_remove_simple_key(parser))
- return 0;
-
- /* Simple keys are allowed after ','. */
-
- parser->simple_key_allowed = 1;
-
- /* Consume the token. */
-
- start_mark = parser->mark;
- SKIP(parser);
- end_mark = parser->mark;
-
- /* Create the FLOW-ENTRY token and append it to the queue. */
-
- TOKEN_INIT(token, YAML_FLOW_ENTRY_TOKEN, start_mark, end_mark);
-
- if (!ENQUEUE(parser, parser->tokens, token))
- return 0;
-
- return 1;
-}
-
-/*
- * Produce the BLOCK-ENTRY token.
- */
-
-static int
-yaml_parser_fetch_block_entry(yaml_parser_t *parser)
-{
- yaml_mark_t start_mark, end_mark;
- yaml_token_t token;
-
- /* Check if the scanner is in the block context. */
-
- if (!parser->flow_level)
- {
- /* Check if we are allowed to start a new entry. */
-
- if (!parser->simple_key_allowed) {
- return yaml_parser_set_scanner_error(parser, NULL, parser->mark,
- "block sequence entries are not allowed in this context");
- }
-
- /* Add the BLOCK-SEQUENCE-START token if needed. */
-
- if (!yaml_parser_roll_indent(parser, parser->mark.column, -1,
- YAML_BLOCK_SEQUENCE_START_TOKEN, parser->mark))
- return 0;
- }
- else
- {
- /*
- * It is an error for the '-' indicator to occur in the flow context,
- * but we let the Parser detect and report about it because the Parser
- * is able to point to the context.
- */
- }
-
- /* Reset any potential simple keys on the current flow level. */
-
- if (!yaml_parser_remove_simple_key(parser))
- return 0;
-
- /* Simple keys are allowed after '-'. */
-
- parser->simple_key_allowed = 1;
-
- /* Consume the token. */
-
- start_mark = parser->mark;
- SKIP(parser);
- end_mark = parser->mark;
-
- /* Create the BLOCK-ENTRY token and append it to the queue. */
-
- TOKEN_INIT(token, YAML_BLOCK_ENTRY_TOKEN, start_mark, end_mark);
-
- if (!ENQUEUE(parser, parser->tokens, token))
- return 0;
-
- return 1;
-}
-
-/*
- * Produce the KEY token.
- */
-
-static int
-yaml_parser_fetch_key(yaml_parser_t *parser)
-{
- yaml_mark_t start_mark, end_mark;
- yaml_token_t token;
-
- /* In the block context, additional checks are required. */
-
- if (!parser->flow_level)
- {
- /* Check if we are allowed to start a new key (not necessary simple). */
-
- if (!parser->simple_key_allowed) {
- return yaml_parser_set_scanner_error(parser, NULL, parser->mark,
- "mapping keys are not allowed in this context");
- }
-
- /* Add the BLOCK-MAPPING-START token if needed. */
-
- if (!yaml_parser_roll_indent(parser, parser->mark.column, -1,
- YAML_BLOCK_MAPPING_START_TOKEN, parser->mark))
- return 0;
- }
-
- /* Reset any potential simple keys on the current flow level. */
-
- if (!yaml_parser_remove_simple_key(parser))
- return 0;
-
- /* Simple keys are allowed after '?' in the block context. */
-
- parser->simple_key_allowed = (!parser->flow_level);
-
- /* Consume the token. */
-
- start_mark = parser->mark;
- SKIP(parser);
- end_mark = parser->mark;
-
- /* Create the KEY token and append it to the queue. */
-
- TOKEN_INIT(token, YAML_KEY_TOKEN, start_mark, end_mark);
-
- if (!ENQUEUE(parser, parser->tokens, token))
- return 0;
-
- return 1;
-}
-
-/*
- * Produce the VALUE token.
- */
-
-static int
-yaml_parser_fetch_value(yaml_parser_t *parser)
-{
- yaml_mark_t start_mark, end_mark;
- yaml_token_t token;
- yaml_simple_key_t *simple_key = parser->simple_keys.top-1;
-
- /* Have we found a simple key? */
-
- if (simple_key->possible)
- {
-
- /* Create the KEY token and insert it into the queue. */
-
- TOKEN_INIT(token, YAML_KEY_TOKEN, simple_key->mark, simple_key->mark);
-
- if (!QUEUE_INSERT(parser, parser->tokens,
- simple_key->token_number - parser->tokens_parsed, token))
- return 0;
-
- /* In the block context, we may need to add the BLOCK-MAPPING-START token. */
-
- if (!yaml_parser_roll_indent(parser, simple_key->mark.column,
- simple_key->token_number,
- YAML_BLOCK_MAPPING_START_TOKEN, simple_key->mark))
- return 0;
-
- /* Remove the simple key. */
-
- simple_key->possible = 0;
-
- /* A simple key cannot follow another simple key. */
-
- parser->simple_key_allowed = 0;
- }
- else
- {
- /* The ':' indicator follows a complex key. */
-
- /* In the block context, extra checks are required. */
-
- if (!parser->flow_level)
- {
- /* Check if we are allowed to start a complex value. */
-
- if (!parser->simple_key_allowed) {
- return yaml_parser_set_scanner_error(parser, NULL, parser->mark,
- "mapping values are not allowed in this context");
- }
-
- /* Add the BLOCK-MAPPING-START token if needed. */
-
- if (!yaml_parser_roll_indent(parser, parser->mark.column, -1,
- YAML_BLOCK_MAPPING_START_TOKEN, parser->mark))
- return 0;
- }
-
- /* Simple keys after ':' are allowed in the block context. */
-
- parser->simple_key_allowed = (!parser->flow_level);
- }
-
- /* Consume the token. */
-
- start_mark = parser->mark;
- SKIP(parser);
- end_mark = parser->mark;
-
- /* Create the VALUE token and append it to the queue. */
-
- TOKEN_INIT(token, YAML_VALUE_TOKEN, start_mark, end_mark);
-
- if (!ENQUEUE(parser, parser->tokens, token))
- return 0;
-
- return 1;
-}
-
-/*
- * Produce the ALIAS or ANCHOR token.
- */
-
-static int
-yaml_parser_fetch_anchor(yaml_parser_t *parser, yaml_token_type_t type)
-{
- yaml_token_t token;
-
- /* An anchor or an alias could be a simple key. */
-
- if (!yaml_parser_save_simple_key(parser))
- return 0;
-
- /* A simple key cannot follow an anchor or an alias. */
-
- parser->simple_key_allowed = 0;
-
- /* Create the ALIAS or ANCHOR token and append it to the queue. */
-
- if (!yaml_parser_scan_anchor(parser, &token, type))
- return 0;
-
- if (!ENQUEUE(parser, parser->tokens, token)) {
- yaml_token_delete(&token);
- return 0;
- }
- return 1;
-}
-
-/*
- * Produce the TAG token.
- */
-
-static int
-yaml_parser_fetch_tag(yaml_parser_t *parser)
-{
- yaml_token_t token;
-
- /* A tag could be a simple key. */
-
- if (!yaml_parser_save_simple_key(parser))
- return 0;
-
- /* A simple key cannot follow a tag. */
-
- parser->simple_key_allowed = 0;
-
- /* Create the TAG token and append it to the queue. */
-
- if (!yaml_parser_scan_tag(parser, &token))
- return 0;
-
- if (!ENQUEUE(parser, parser->tokens, token)) {
- yaml_token_delete(&token);
- return 0;
- }
-
- return 1;
-}
-
-/*
- * Produce the SCALAR(...,literal) or SCALAR(...,folded) tokens.
- */
-
-static int
-yaml_parser_fetch_block_scalar(yaml_parser_t *parser, int literal)
-{
- yaml_token_t token;
-
- /* Remove any potential simple keys. */
-
- if (!yaml_parser_remove_simple_key(parser))
- return 0;
-
- /* A simple key may follow a block scalar. */
-
- parser->simple_key_allowed = 1;
-
- /* Create the SCALAR token and append it to the queue. */
-
- if (!yaml_parser_scan_block_scalar(parser, &token, literal))
- return 0;
-
- if (!ENQUEUE(parser, parser->tokens, token)) {
- yaml_token_delete(&token);
- return 0;
- }
-
- return 1;
-}
-
-/*
- * Produce the SCALAR(...,single-quoted) or SCALAR(...,double-quoted) tokens.
- */
-
-static int
-yaml_parser_fetch_flow_scalar(yaml_parser_t *parser, int single)
-{
- yaml_token_t token;
-
- /* A plain scalar could be a simple key. */
-
- if (!yaml_parser_save_simple_key(parser))
- return 0;
-
- /* A simple key cannot follow a flow scalar. */
-
- parser->simple_key_allowed = 0;
-
- /* Create the SCALAR token and append it to the queue. */
-
- if (!yaml_parser_scan_flow_scalar(parser, &token, single))
- return 0;
-
- if (!ENQUEUE(parser, parser->tokens, token)) {
- yaml_token_delete(&token);
- return 0;
- }
-
- return 1;
-}
-
-/*
- * Produce the SCALAR(...,plain) token.
- */
-
-static int
-yaml_parser_fetch_plain_scalar(yaml_parser_t *parser)
-{
- yaml_token_t token;
-
- /* A plain scalar could be a simple key. */
-
- if (!yaml_parser_save_simple_key(parser))
- return 0;
-
- /* A simple key cannot follow a flow scalar. */
-
- parser->simple_key_allowed = 0;
-
- /* Create the SCALAR token and append it to the queue. */
-
- if (!yaml_parser_scan_plain_scalar(parser, &token))
- return 0;
-
- if (!ENQUEUE(parser, parser->tokens, token)) {
- yaml_token_delete(&token);
- return 0;
- }
-
- return 1;
-}
-
-/*
- * Eat whitespaces and comments until the next token is found.
- */
-
-static int
-yaml_parser_scan_to_next_token(yaml_parser_t *parser)
-{
- /* Until the next token is not found. */
-
- while (1)
- {
- /* Allow the BOM mark to start a line. */
-
- if (!CACHE(parser, 1)) return 0;
-
- if (parser->mark.column == 0 && IS_BOM(parser->buffer))
- SKIP(parser);
-
- /*
- * Eat whitespaces.
- *
- * Tabs are allowed:
- *
- * - in the flow context;
- * - in the block context, but not at the beginning of the line or
- * after '-', '?', or ':' (complex value).
- */
-
- if (!CACHE(parser, 1)) return 0;
-
- while (CHECK(parser->buffer,' ') ||
- ((parser->flow_level || !parser->simple_key_allowed) &&
- CHECK(parser->buffer, '\t'))) {
- SKIP(parser);
- if (!CACHE(parser, 1)) return 0;
- }
-
- /* Eat a comment until a line break. */
-
- if (CHECK(parser->buffer, '#')) {
- while (!IS_BREAKZ(parser->buffer)) {
- SKIP(parser);
- if (!CACHE(parser, 1)) return 0;
- }
- }
-
- /* If it is a line break, eat it. */
-
- if (IS_BREAK(parser->buffer))
- {
- if (!CACHE(parser, 2)) return 0;
- SKIP_LINE(parser);
-
- /* In the block context, a new line may start a simple key. */
-
- if (!parser->flow_level) {
- parser->simple_key_allowed = 1;
- }
- }
- else
- {
- /* We have found a token. */
-
- break;
- }
- }
-
- return 1;
-}
-
-/*
- * Scan a YAML-DIRECTIVE or TAG-DIRECTIVE token.
- *
- * Scope:
- * %YAML 1.1 # a comment \n
- * ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
- * %TAG !yaml! tag:yaml.org,2002: \n
- * ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
- */
-
-int
-yaml_parser_scan_directive(yaml_parser_t *parser, yaml_token_t *token)
-{
- yaml_mark_t start_mark, end_mark;
- yaml_char_t *name = NULL;
- int major, minor;
- yaml_char_t *handle = NULL, *prefix = NULL;
-
- /* Eat '%'. */
-
- start_mark = parser->mark;
-
- SKIP(parser);
-
- /* Scan the directive name. */
-
- if (!yaml_parser_scan_directive_name(parser, start_mark, &name))
- goto error;
-
- /* Is it a YAML directive? */
-
- if (strcmp((char *)name, "YAML") == 0)
- {
- /* Scan the VERSION directive value. */
-
- if (!yaml_parser_scan_version_directive_value(parser, start_mark,
- &major, &minor))
- goto error;
-
- end_mark = parser->mark;
-
- /* Create a VERSION-DIRECTIVE token. */
-
- VERSION_DIRECTIVE_TOKEN_INIT(*token, major, minor,
- start_mark, end_mark);
- }
-
- /* Is it a TAG directive? */
-
- else if (strcmp((char *)name, "TAG") == 0)
- {
- /* Scan the TAG directive value. */
-
- if (!yaml_parser_scan_tag_directive_value(parser, start_mark,
- &handle, &prefix))
- goto error;
-
- end_mark = parser->mark;
-
- /* Create a TAG-DIRECTIVE token. */
-
- TAG_DIRECTIVE_TOKEN_INIT(*token, handle, prefix,
- start_mark, end_mark);
- }
-
- /* Unknown directive. */
-
- else
- {
- yaml_parser_set_scanner_error(parser, "while scanning a directive",
- start_mark, "found unknown directive name");
- goto error;
- }
-
- /* Eat the rest of the line including any comments. */
-
- if (!CACHE(parser, 1)) goto error;
-
- while (IS_BLANK(parser->buffer)) {
- SKIP(parser);
- if (!CACHE(parser, 1)) goto error;
- }
-
- if (CHECK(parser->buffer, '#')) {
- while (!IS_BREAKZ(parser->buffer)) {
- SKIP(parser);
- if (!CACHE(parser, 1)) goto error;
- }
- }
-
- /* Check if we are at the end of the line. */
-
- if (!IS_BREAKZ(parser->buffer)) {
- yaml_parser_set_scanner_error(parser, "while scanning a directive",
- start_mark, "did not find expected comment or line break");
- goto error;
- }
-
- /* Eat a line break. */
-
- if (IS_BREAK(parser->buffer)) {
- if (!CACHE(parser, 2)) goto error;
- SKIP_LINE(parser);
- }
-
- yaml_free(name);
-
- return 1;
-
-error:
- yaml_free(prefix);
- yaml_free(handle);
- yaml_free(name);
- return 0;
-}
-
-/*
- * Scan the directive name.
- *
- * Scope:
- * %YAML 1.1 # a comment \n
- * ^^^^
- * %TAG !yaml! tag:yaml.org,2002: \n
- * ^^^
- */
-
-static int
-yaml_parser_scan_directive_name(yaml_parser_t *parser,
- yaml_mark_t start_mark, yaml_char_t **name)
-{
- yaml_string_t string = NULL_STRING;
-
- if (!STRING_INIT(parser, string, INITIAL_STRING_SIZE)) goto error;
-
- /* Consume the directive name. */
-
- if (!CACHE(parser, 1)) goto error;
-
- while (IS_ALPHA(parser->buffer))
- {
- if (!READ(parser, string)) goto error;
- if (!CACHE(parser, 1)) goto error;
- }
-
- /* Check if the name is empty. */
-
- if (string.start == string.pointer) {
- yaml_parser_set_scanner_error(parser, "while scanning a directive",
- start_mark, "could not find expected directive name");
- goto error;
- }
-
- /* Check for an blank character after the name. */
-
- if (!IS_BLANKZ(parser->buffer)) {
- yaml_parser_set_scanner_error(parser, "while scanning a directive",
- start_mark, "found unexpected non-alphabetical character");
- goto error;
- }
-
- *name = string.start;
-
- return 1;
-
-error:
- STRING_DEL(parser, string);
- return 0;
-}
-
-/*
- * Scan the value of VERSION-DIRECTIVE.
- *
- * Scope:
- * %YAML 1.1 # a comment \n
- * ^^^^^^
- */
-
-static int
-yaml_parser_scan_version_directive_value(yaml_parser_t *parser,
- yaml_mark_t start_mark, int *major, int *minor)
-{
- /* Eat whitespaces. */
-
- if (!CACHE(parser, 1)) return 0;
-
- while (IS_BLANK(parser->buffer)) {
- SKIP(parser);
- if (!CACHE(parser, 1)) return 0;
- }
-
- /* Consume the major version number. */
-
- if (!yaml_parser_scan_version_directive_number(parser, start_mark, major))
- return 0;
-
- /* Eat '.'. */
-
- if (!CHECK(parser->buffer, '.')) {
- return yaml_parser_set_scanner_error(parser, "while scanning a %YAML directive",
- start_mark, "did not find expected digit or '.' character");
- }
-
- SKIP(parser);
-
- /* Consume the minor version number. */
-
- if (!yaml_parser_scan_version_directive_number(parser, start_mark, minor))
- return 0;
-
- return 1;
-}
-
-#define MAX_NUMBER_LENGTH 9
-
-/*
- * Scan the version number of VERSION-DIRECTIVE.
- *
- * Scope:
- * %YAML 1.1 # a comment \n
- * ^
- * %YAML 1.1 # a comment \n
- * ^
- */
-
-static int
-yaml_parser_scan_version_directive_number(yaml_parser_t *parser,
- yaml_mark_t start_mark, int *number)
-{
- int value = 0;
- size_t length = 0;
-
- /* Repeat while the next character is digit. */
-
- if (!CACHE(parser, 1)) return 0;
-
- while (IS_DIGIT(parser->buffer))
- {
- /* Check if the number is too long. */
-
- if (++length > MAX_NUMBER_LENGTH) {
- return yaml_parser_set_scanner_error(parser, "while scanning a %YAML directive",
- start_mark, "found extremely long version number");
- }
-
- value = value*10 + AS_DIGIT(parser->buffer);
-
- SKIP(parser);
-
- if (!CACHE(parser, 1)) return 0;
- }
-
- /* Check if the number was present. */
-
- if (!length) {
- return yaml_parser_set_scanner_error(parser, "while scanning a %YAML directive",
- start_mark, "did not find expected version number");
- }
-
- *number = value;
-
- return 1;
-}
-
-/*
- * Scan the value of a TAG-DIRECTIVE token.
- *
- * Scope:
- * %TAG !yaml! tag:yaml.org,2002: \n
- * ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
- */
-
-static int
-yaml_parser_scan_tag_directive_value(yaml_parser_t *parser,
- yaml_mark_t start_mark, yaml_char_t **handle, yaml_char_t **prefix)
-{
- yaml_char_t *handle_value = NULL;
- yaml_char_t *prefix_value = NULL;
-
- /* Eat whitespaces. */
-
- if (!CACHE(parser, 1)) goto error;
-
- while (IS_BLANK(parser->buffer)) {
- SKIP(parser);
- if (!CACHE(parser, 1)) goto error;
- }
-
- /* Scan a handle. */
-
- if (!yaml_parser_scan_tag_handle(parser, 1, start_mark, &handle_value))
- goto error;
-
- /* Expect a whitespace. */
-
- if (!CACHE(parser, 1)) goto error;
-
- if (!IS_BLANK(parser->buffer)) {
- yaml_parser_set_scanner_error(parser, "while scanning a %TAG directive",
- start_mark, "did not find expected whitespace");
- goto error;
- }
-
- /* Eat whitespaces. */
-
- while (IS_BLANK(parser->buffer)) {
- SKIP(parser);
- if (!CACHE(parser, 1)) goto error;
- }
-
- /* Scan a prefix. */
-
- if (!yaml_parser_scan_tag_uri(parser, 1, 1, NULL, start_mark, &prefix_value))
- goto error;
-
- /* Expect a whitespace or line break. */
-
- if (!CACHE(parser, 1)) goto error;
-
- if (!IS_BLANKZ(parser->buffer)) {
- yaml_parser_set_scanner_error(parser, "while scanning a %TAG directive",
- start_mark, "did not find expected whitespace or line break");
- goto error;
- }
-
- *handle = handle_value;
- *prefix = prefix_value;
-
- return 1;
-
-error:
- yaml_free(handle_value);
- yaml_free(prefix_value);
- return 0;
-}
-
-static int
-yaml_parser_scan_anchor(yaml_parser_t *parser, yaml_token_t *token,
- yaml_token_type_t type)
-{
- int length = 0;
- yaml_mark_t start_mark, end_mark;
- yaml_string_t string = NULL_STRING;
-
- if (!STRING_INIT(parser, string, INITIAL_STRING_SIZE)) goto error;
-
- /* Eat the indicator character. */
-
- start_mark = parser->mark;
-
- SKIP(parser);
-
- /* Consume the value. */
-
- if (!CACHE(parser, 1)) goto error;
-
- while (IS_ALPHA(parser->buffer)) {
- if (!READ(parser, string)) goto error;
- if (!CACHE(parser, 1)) goto error;
- length ++;
- }
-
- end_mark = parser->mark;
-
- /*
- * Check if length of the anchor is greater than 0 and it is followed by
- * a whitespace character or one of the indicators:
- *
- * '?', ':', ',', ']', '}', '%', '@', '`'.
- */
-
- if (!length || !(IS_BLANKZ(parser->buffer) || CHECK(parser->buffer, '?')
- || CHECK(parser->buffer, ':') || CHECK(parser->buffer, ',')
- || CHECK(parser->buffer, ']') || CHECK(parser->buffer, '}')
- || CHECK(parser->buffer, '%') || CHECK(parser->buffer, '@')
- || CHECK(parser->buffer, '`'))) {
- yaml_parser_set_scanner_error(parser, type == YAML_ANCHOR_TOKEN ?
- "while scanning an anchor" : "while scanning an alias", start_mark,
- "did not find expected alphabetic or numeric character");
- goto error;
- }
-
- /* Create a token. */
-
- if (type == YAML_ANCHOR_TOKEN) {
- ANCHOR_TOKEN_INIT(*token, string.start, start_mark, end_mark);
- }
- else {
- ALIAS_TOKEN_INIT(*token, string.start, start_mark, end_mark);
- }
-
- return 1;
-
-error:
- STRING_DEL(parser, string);
- return 0;
-}
-
-/*
- * Scan a TAG token.
- */
-
-static int
-yaml_parser_scan_tag(yaml_parser_t *parser, yaml_token_t *token)
-{
- yaml_char_t *handle = NULL;
- yaml_char_t *suffix = NULL;
- yaml_mark_t start_mark, end_mark;
-
- start_mark = parser->mark;
-
- /* Check if the tag is in the canonical form. */
-
- if (!CACHE(parser, 2)) goto error;
-
- if (CHECK_AT(parser->buffer, '<', 1))
- {
- /* Set the handle to '' */
-
- handle = YAML_MALLOC(1);
- if (!handle) goto error;
- handle[0] = '\0';
-
- /* Eat '!<' */
-
- SKIP(parser);
- SKIP(parser);
-
- /* Consume the tag value. */
-
- if (!yaml_parser_scan_tag_uri(parser, 1, 0, NULL, start_mark, &suffix))
- goto error;
-
- /* Check for '>' and eat it. */
-
- if (!CHECK(parser->buffer, '>')) {
- yaml_parser_set_scanner_error(parser, "while scanning a tag",
- start_mark, "did not find the expected '>'");
- goto error;
- }
-
- SKIP(parser);
- }
- else
- {
- /* The tag has either the '!suffix' or the '!handle!suffix' form. */
-
- /* First, try to scan a handle. */
-
- if (!yaml_parser_scan_tag_handle(parser, 0, start_mark, &handle))
- goto error;
-
- /* Check if it is, indeed, handle. */
-
- if (handle[0] == '!' && handle[1] != '\0' && handle[strlen((char *)handle)-1] == '!')
- {
- /* Scan the suffix now. */
-
- if (!yaml_parser_scan_tag_uri(parser, 0, 0, NULL, start_mark, &suffix))
- goto error;
- }
- else
- {
- /* It wasn't a handle after all. Scan the rest of the tag. */
-
- if (!yaml_parser_scan_tag_uri(parser, 0, 0, handle, start_mark, &suffix))
- goto error;
-
- /* Set the handle to '!'. */
-
- yaml_free(handle);
- handle = YAML_MALLOC(2);
- if (!handle) goto error;
- handle[0] = '!';
- handle[1] = '\0';
-
- /*
- * A special case: the '!' tag. Set the handle to '' and the
- * suffix to '!'.
- */
-
- if (suffix[0] == '\0') {
- yaml_char_t *tmp = handle;
- handle = suffix;
- suffix = tmp;
- }
- }
- }
-
- /* Check the character which ends the tag. */
-
- if (!CACHE(parser, 1)) goto error;
-
- if (!IS_BLANKZ(parser->buffer)) {
- if (!parser->flow_level || !CHECK(parser->buffer, ',') ) {
- yaml_parser_set_scanner_error(parser, "while scanning a tag",
- start_mark, "did not find expected whitespace or line break");
- goto error;
- }
- }
-
- end_mark = parser->mark;
-
- /* Create a token. */
-
- TAG_TOKEN_INIT(*token, handle, suffix, start_mark, end_mark);
-
- return 1;
-
-error:
- yaml_free(handle);
- yaml_free(suffix);
- return 0;
-}
-
-/*
- * Scan a tag handle.
- */
-
-static int
-yaml_parser_scan_tag_handle(yaml_parser_t *parser, int directive,
- yaml_mark_t start_mark, yaml_char_t **handle)
-{
- yaml_string_t string = NULL_STRING;
-
- if (!STRING_INIT(parser, string, INITIAL_STRING_SIZE)) goto error;
-
- /* Check the initial '!' character. */
-
- if (!CACHE(parser, 1)) goto error;
-
- if (!CHECK(parser->buffer, '!')) {
- yaml_parser_set_scanner_error(parser, directive ?
- "while scanning a tag directive" : "while scanning a tag",
- start_mark, "did not find expected '!'");
- goto error;
- }
-
- /* Copy the '!' character. */
-
- if (!READ(parser, string)) goto error;
-
- /* Copy all subsequent alphabetical and numerical characters. */
-
- if (!CACHE(parser, 1)) goto error;
-
- while (IS_ALPHA(parser->buffer))
- {
- if (!READ(parser, string)) goto error;
- if (!CACHE(parser, 1)) goto error;
- }
-
- /* Check if the trailing character is '!' and copy it. */
-
- if (CHECK(parser->buffer, '!'))
- {
- if (!READ(parser, string)) goto error;
- }
- else
- {
- /*
- * It's either the '!' tag or not really a tag handle. If it's a %TAG
- * directive, it's an error. If it's a tag token, it must be a part of
- * URI.
- */
-
- if (directive && !(string.start[0] == '!' && string.start[1] == '\0')) {
- yaml_parser_set_scanner_error(parser, "while parsing a tag directive",
- start_mark, "did not find expected '!'");
- goto error;
- }
- }
-
- *handle = string.start;
-
- return 1;
-
-error:
- STRING_DEL(parser, string);
- return 0;
-}
-
-/*
- * Scan a tag.
- */
-
-static int
-yaml_parser_scan_tag_uri(yaml_parser_t *parser, int uri_char, int directive,
- yaml_char_t *head, yaml_mark_t start_mark, yaml_char_t **uri)
-{
- size_t length = head ? strlen((char *)head) : 0;
- yaml_string_t string = NULL_STRING;
-
- if (!STRING_INIT(parser, string, INITIAL_STRING_SIZE)) goto error;
-
- /* Resize the string to include the head. */
-
- while ((size_t)(string.end - string.start) <= length) {
- if (!yaml_string_extend(&string.start, &string.pointer, &string.end)) {
- parser->error = YAML_MEMORY_ERROR;
- goto error;
- }
- }
-
- /*
- * Copy the head if needed.
- *
- * Note that we don't copy the leading '!' character.
- */
-
- if (length > 1) {
- memcpy(string.start, head+1, length-1);
- string.pointer += length-1;
- }
-
- /* Scan the tag. */
-
- if (!CACHE(parser, 1)) goto error;
-
- /*
- * The set of characters that may appear in URI is as follows:
- *
- * '0'-'9', 'A'-'Z', 'a'-'z', '_', '-', ';', '/', '?', ':', '@', '&',
- * '=', '+', '$', '.', '!', '~', '*', '\'', '(', ')', '%'.
- *
- * If we are inside a verbatim tag <...> (parameter uri_char is true)
- * then also the following flow indicators are allowed:
- * ',', '[', ']'
- */
-
- while (IS_ALPHA(parser->buffer) || CHECK(parser->buffer, ';')
- || CHECK(parser->buffer, '/') || CHECK(parser->buffer, '?')
- || CHECK(parser->buffer, ':') || CHECK(parser->buffer, '@')
- || CHECK(parser->buffer, '&') || CHECK(parser->buffer, '=')
- || CHECK(parser->buffer, '+') || CHECK(parser->buffer, '$')
- || CHECK(parser->buffer, '.') || CHECK(parser->buffer, '%')
- || CHECK(parser->buffer, '!') || CHECK(parser->buffer, '~')
- || CHECK(parser->buffer, '*') || CHECK(parser->buffer, '\'')
- || CHECK(parser->buffer, '(') || CHECK(parser->buffer, ')')
- || (uri_char && (
- CHECK(parser->buffer, ',')
- || CHECK(parser->buffer, '[') || CHECK(parser->buffer, ']')
- )
- ))
- {
- /* Check if it is a URI-escape sequence. */
-
- if (CHECK(parser->buffer, '%')) {
- if (!STRING_EXTEND(parser, string))
- goto error;
-
- if (!yaml_parser_scan_uri_escapes(parser,
- directive, start_mark, &string)) goto error;
- }
- else {
- if (!READ(parser, string)) goto error;
- }
-
- length ++;
- if (!CACHE(parser, 1)) goto error;
- }
-
- /* Check if the tag is non-empty. */
-
- if (!length) {
- if (!STRING_EXTEND(parser, string))
- goto error;
-
- yaml_parser_set_scanner_error(parser, directive ?
- "while parsing a %TAG directive" : "while parsing a tag",
- start_mark, "did not find expected tag URI");
- goto error;
- }
-
- *uri = string.start;
-
- return 1;
-
-error:
- STRING_DEL(parser, string);
- return 0;
-}
-
-/*
- * Decode an URI-escape sequence corresponding to a single UTF-8 character.
- */
-
-static int
-yaml_parser_scan_uri_escapes(yaml_parser_t *parser, int directive,
- yaml_mark_t start_mark, yaml_string_t *string)
-{
- int width = 0;
-
- /* Decode the required number of characters. */
-
- do {
-
- unsigned char octet = 0;
-
- /* Check for a URI-escaped octet. */
-
- if (!CACHE(parser, 3)) return 0;
-
- if (!(CHECK(parser->buffer, '%')
- && IS_HEX_AT(parser->buffer, 1)
- && IS_HEX_AT(parser->buffer, 2))) {
- return yaml_parser_set_scanner_error(parser, directive ?
- "while parsing a %TAG directive" : "while parsing a tag",
- start_mark, "did not find URI escaped octet");
- }
-
- /* Get the octet. */
-
- octet = (AS_HEX_AT(parser->buffer, 1) << 4) + AS_HEX_AT(parser->buffer, 2);
-
- /* If it is the leading octet, determine the length of the UTF-8 sequence. */
-
- if (!width)
- {
- width = (octet & 0x80) == 0x00 ? 1 :
- (octet & 0xE0) == 0xC0 ? 2 :
- (octet & 0xF0) == 0xE0 ? 3 :
- (octet & 0xF8) == 0xF0 ? 4 : 0;
- if (!width) {
- return yaml_parser_set_scanner_error(parser, directive ?
- "while parsing a %TAG directive" : "while parsing a tag",
- start_mark, "found an incorrect leading UTF-8 octet");
- }
- }
- else
- {
- /* Check if the trailing octet is correct. */
-
- if ((octet & 0xC0) != 0x80) {
- return yaml_parser_set_scanner_error(parser, directive ?
- "while parsing a %TAG directive" : "while parsing a tag",
- start_mark, "found an incorrect trailing UTF-8 octet");
- }
- }
-
- /* Copy the octet and move the pointers. */
-
- *(string->pointer++) = octet;
- SKIP(parser);
- SKIP(parser);
- SKIP(parser);
-
- } while (--width);
-
- return 1;
-}
-
-/*
- * Scan a block scalar.
- */
-
-static int
-yaml_parser_scan_block_scalar(yaml_parser_t *parser, yaml_token_t *token,
- int literal)
-{
- yaml_mark_t start_mark;
- yaml_mark_t end_mark;
- yaml_string_t string = NULL_STRING;
- yaml_string_t leading_break = NULL_STRING;
- yaml_string_t trailing_breaks = NULL_STRING;
- int chomping = 0;
- int increment = 0;
- int indent = 0;
- int leading_blank = 0;
- int trailing_blank = 0;
-
- if (!STRING_INIT(parser, string, INITIAL_STRING_SIZE)) goto error;
- if (!STRING_INIT(parser, leading_break, INITIAL_STRING_SIZE)) goto error;
- if (!STRING_INIT(parser, trailing_breaks, INITIAL_STRING_SIZE)) goto error;
-
- /* Eat the indicator '|' or '>'. */
-
- start_mark = parser->mark;
-
- SKIP(parser);
-
- /* Scan the additional block scalar indicators. */
-
- if (!CACHE(parser, 1)) goto error;
-
- /* Check for a chomping indicator. */
-
- if (CHECK(parser->buffer, '+') || CHECK(parser->buffer, '-'))
- {
- /* Set the chomping method and eat the indicator. */
-
- chomping = CHECK(parser->buffer, '+') ? +1 : -1;
-
- SKIP(parser);
-
- /* Check for an indentation indicator. */
-
- if (!CACHE(parser, 1)) goto error;
-
- if (IS_DIGIT(parser->buffer))
- {
- /* Check that the indentation is greater than 0. */
-
- if (CHECK(parser->buffer, '0')) {
- yaml_parser_set_scanner_error(parser, "while scanning a block scalar",
- start_mark, "found an indentation indicator equal to 0");
- goto error;
- }
-
- /* Get the indentation level and eat the indicator. */
-
- increment = AS_DIGIT(parser->buffer);
-
- SKIP(parser);
- }
- }
-
- /* Do the same as above, but in the opposite order. */
-
- else if (IS_DIGIT(parser->buffer))
- {
- if (CHECK(parser->buffer, '0')) {
- yaml_parser_set_scanner_error(parser, "while scanning a block scalar",
- start_mark, "found an indentation indicator equal to 0");
- goto error;
- }
-
- increment = AS_DIGIT(parser->buffer);
-
- SKIP(parser);
-
- if (!CACHE(parser, 1)) goto error;
-
- if (CHECK(parser->buffer, '+') || CHECK(parser->buffer, '-')) {
- chomping = CHECK(parser->buffer, '+') ? +1 : -1;
-
- SKIP(parser);
- }
- }
-
- /* Eat whitespaces and comments to the end of the line. */
-
- if (!CACHE(parser, 1)) goto error;
-
- while (IS_BLANK(parser->buffer)) {
- SKIP(parser);
- if (!CACHE(parser, 1)) goto error;
- }
-
- if (CHECK(parser->buffer, '#')) {
- while (!IS_BREAKZ(parser->buffer)) {
- SKIP(parser);
- if (!CACHE(parser, 1)) goto error;
- }
- }
-
- /* Check if we are at the end of the line. */
-
- if (!IS_BREAKZ(parser->buffer)) {
- yaml_parser_set_scanner_error(parser, "while scanning a block scalar",
- start_mark, "did not find expected comment or line break");
- goto error;
- }
-
- /* Eat a line break. */
-
- if (IS_BREAK(parser->buffer)) {
- if (!CACHE(parser, 2)) goto error;
- SKIP_LINE(parser);
- }
-
- end_mark = parser->mark;
-
- /* Set the indentation level if it was specified. */
-
- if (increment) {
- indent = parser->indent >= 0 ? parser->indent+increment : increment;
- }
-
- /* Scan the leading line breaks and determine the indentation level if needed. */
-
- if (!yaml_parser_scan_block_scalar_breaks(parser, &indent, &trailing_breaks,
- start_mark, &end_mark)) goto error;
-
- /* Scan the block scalar content. */
-
- if (!CACHE(parser, 1)) goto error;
-
- while ((int)parser->mark.column == indent && !(IS_Z(parser->buffer)))
- {
- /*
- * We are at the beginning of a non-empty line.
- */
-
- /* Is it a trailing whitespace? */
-
- trailing_blank = IS_BLANK(parser->buffer);
-
- /* Check if we need to fold the leading line break. */
-
- if (!literal && (*leading_break.start == '\n')
- && !leading_blank && !trailing_blank)
- {
- /* Do we need to join the lines by space? */
-
- if (*trailing_breaks.start == '\0') {
- if (!STRING_EXTEND(parser, string)) goto error;
- *(string.pointer ++) = ' ';
- }
-
- CLEAR(parser, leading_break);
- }
- else {
- if (!JOIN(parser, string, leading_break)) goto error;
- CLEAR(parser, leading_break);
- }
-
- /* Append the remaining line breaks. */
-
- if (!JOIN(parser, string, trailing_breaks)) goto error;
- CLEAR(parser, trailing_breaks);
-
- /* Is it a leading whitespace? */
-
- leading_blank = IS_BLANK(parser->buffer);
-
- /* Consume the current line. */
-
- while (!IS_BREAKZ(parser->buffer)) {
- if (!READ(parser, string)) goto error;
- if (!CACHE(parser, 1)) goto error;
- }
-
- /* Consume the line break. */
-
- if (!CACHE(parser, 2)) goto error;
-
- if (!READ_LINE(parser, leading_break)) goto error;
-
- /* Eat the following indentation spaces and line breaks. */
-
- if (!yaml_parser_scan_block_scalar_breaks(parser,
- &indent, &trailing_breaks, start_mark, &end_mark)) goto error;
- }
-
- /* Chomp the tail. */
-
- if (chomping != -1) {
- if (!JOIN(parser, string, leading_break)) goto error;
- }
- if (chomping == 1) {
- if (!JOIN(parser, string, trailing_breaks)) goto error;
- }
-
- /* Create a token. */
-
- SCALAR_TOKEN_INIT(*token, string.start, string.pointer-string.start,
- literal ? YAML_LITERAL_SCALAR_STYLE : YAML_FOLDED_SCALAR_STYLE,
- start_mark, end_mark);
-
- STRING_DEL(parser, leading_break);
- STRING_DEL(parser, trailing_breaks);
-
- return 1;
-
-error:
- STRING_DEL(parser, string);
- STRING_DEL(parser, leading_break);
- STRING_DEL(parser, trailing_breaks);
-
- return 0;
-}
-
-/*
- * Scan indentation spaces and line breaks for a block scalar. Determine the
- * indentation level if needed.
- */
-
-static int
-yaml_parser_scan_block_scalar_breaks(yaml_parser_t *parser,
- int *indent, yaml_string_t *breaks,
- yaml_mark_t start_mark, yaml_mark_t *end_mark)
-{
- int max_indent = 0;
-
- *end_mark = parser->mark;
-
- /* Eat the indentation spaces and line breaks. */
-
- while (1)
- {
- /* Eat the indentation spaces. */
-
- if (!CACHE(parser, 1)) return 0;
-
- while ((!*indent || (int)parser->mark.column < *indent)
- && IS_SPACE(parser->buffer)) {
- SKIP(parser);
- if (!CACHE(parser, 1)) return 0;
- }
-
- if ((int)parser->mark.column > max_indent)
- max_indent = (int)parser->mark.column;
-
- /* Check for a tab character messing the indentation. */
-
- if ((!*indent || (int)parser->mark.column < *indent)
- && IS_TAB(parser->buffer)) {
- return yaml_parser_set_scanner_error(parser, "while scanning a block scalar",
- start_mark, "found a tab character where an indentation space is expected");
- }
-
- /* Have we found a non-empty line? */
-
- if (!IS_BREAK(parser->buffer)) break;
-
- /* Consume the line break. */
-
- if (!CACHE(parser, 2)) return 0;
- if (!READ_LINE(parser, *breaks)) return 0;
- *end_mark = parser->mark;
- }
-
- /* Determine the indentation level if needed. */
-
- if (!*indent) {
- *indent = max_indent;
- if (*indent < parser->indent + 1)
- *indent = parser->indent + 1;
- if (*indent < 1)
- *indent = 1;
- }
-
- return 1;
-}
-
-/*
- * Scan a quoted scalar.
- */
-
-static int
-yaml_parser_scan_flow_scalar(yaml_parser_t *parser, yaml_token_t *token,
- int single)
-{
- yaml_mark_t start_mark;
- yaml_mark_t end_mark;
- yaml_string_t string = NULL_STRING;
- yaml_string_t leading_break = NULL_STRING;
- yaml_string_t trailing_breaks = NULL_STRING;
- yaml_string_t whitespaces = NULL_STRING;
- int leading_blanks;
-
- if (!STRING_INIT(parser, string, INITIAL_STRING_SIZE)) goto error;
- if (!STRING_INIT(parser, leading_break, INITIAL_STRING_SIZE)) goto error;
- if (!STRING_INIT(parser, trailing_breaks, INITIAL_STRING_SIZE)) goto error;
- if (!STRING_INIT(parser, whitespaces, INITIAL_STRING_SIZE)) goto error;
-
- /* Eat the left quote. */
-
- start_mark = parser->mark;
-
- SKIP(parser);
-
- /* Consume the content of the quoted scalar. */
-
- while (1)
- {
- /* Check that there are no document indicators at the beginning of the line. */
-
- if (!CACHE(parser, 4)) goto error;
-
- if (parser->mark.column == 0 &&
- ((CHECK_AT(parser->buffer, '-', 0) &&
- CHECK_AT(parser->buffer, '-', 1) &&
- CHECK_AT(parser->buffer, '-', 2)) ||
- (CHECK_AT(parser->buffer, '.', 0) &&
- CHECK_AT(parser->buffer, '.', 1) &&
- CHECK_AT(parser->buffer, '.', 2))) &&
- IS_BLANKZ_AT(parser->buffer, 3))
- {
- yaml_parser_set_scanner_error(parser, "while scanning a quoted scalar",
- start_mark, "found unexpected document indicator");
- goto error;
- }
-
- /* Check for EOF. */
-
- if (IS_Z(parser->buffer)) {
- yaml_parser_set_scanner_error(parser, "while scanning a quoted scalar",
- start_mark, "found unexpected end of stream");
- goto error;
- }
-
- /* Consume non-blank characters. */
-
- if (!CACHE(parser, 2)) goto error;
-
- leading_blanks = 0;
-
- while (!IS_BLANKZ(parser->buffer))
- {
- /* Check for an escaped single quote. */
-
- if (single && CHECK_AT(parser->buffer, '\'', 0)
- && CHECK_AT(parser->buffer, '\'', 1))
- {
- if (!STRING_EXTEND(parser, string)) goto error;
- *(string.pointer++) = '\'';
- SKIP(parser);
- SKIP(parser);
- }
-
- /* Check for the right quote. */
-
- else if (CHECK(parser->buffer, single ? '\'' : '"'))
- {
- break;
- }
-
- /* Check for an escaped line break. */
-
- else if (!single && CHECK(parser->buffer, '\\')
- && IS_BREAK_AT(parser->buffer, 1))
- {
- if (!CACHE(parser, 3)) goto error;
- SKIP(parser);
- SKIP_LINE(parser);
- leading_blanks = 1;
- break;
- }
-
- /* Check for an escape sequence. */
-
- else if (!single && CHECK(parser->buffer, '\\'))
- {
- size_t code_length = 0;
-
- if (!STRING_EXTEND(parser, string)) goto error;
-
- /* Check the escape character. */
-
- switch (parser->buffer.pointer[1])
- {
- case '0':
- *(string.pointer++) = '\0';
- break;
-
- case 'a':
- *(string.pointer++) = '\x07';
- break;
-
- case 'b':
- *(string.pointer++) = '\x08';
- break;
-
- case 't':
- case '\t':
- *(string.pointer++) = '\x09';
- break;
-
- case 'n':
- *(string.pointer++) = '\x0A';
- break;
-
- case 'v':
- *(string.pointer++) = '\x0B';
- break;
-
- case 'f':
- *(string.pointer++) = '\x0C';
- break;
-
- case 'r':
- *(string.pointer++) = '\x0D';
- break;
-
- case 'e':
- *(string.pointer++) = '\x1B';
- break;
-
- case ' ':
- *(string.pointer++) = '\x20';
- break;
-
- case '"':
- *(string.pointer++) = '"';
- break;
-
- case '/':
- *(string.pointer++) = '/';
- break;
-
- case '\\':
- *(string.pointer++) = '\\';
- break;
-
- case 'N': /* NEL (#x85) */
- *(string.pointer++) = '\xC2';
- *(string.pointer++) = '\x85';
- break;
-
- case '_': /* #xA0 */
- *(string.pointer++) = '\xC2';
- *(string.pointer++) = '\xA0';
- break;
-
- case 'L': /* LS (#x2028) */
- *(string.pointer++) = '\xE2';
- *(string.pointer++) = '\x80';
- *(string.pointer++) = '\xA8';
- break;
-
- case 'P': /* PS (#x2029) */
- *(string.pointer++) = '\xE2';
- *(string.pointer++) = '\x80';
- *(string.pointer++) = '\xA9';
- break;
-
- case 'x':
- code_length = 2;
- break;
-
- case 'u':
- code_length = 4;
- break;
-
- case 'U':
- code_length = 8;
- break;
-
- default:
- yaml_parser_set_scanner_error(parser, "while parsing a quoted scalar",
- start_mark, "found unknown escape character");
- goto error;
- }
-
- SKIP(parser);
- SKIP(parser);
-
- /* Consume an arbitrary escape code. */
-
- if (code_length)
- {
- unsigned int value = 0;
- size_t k;
-
- /* Scan the character value. */
-
- if (!CACHE(parser, code_length)) goto error;
-
- for (k = 0; k < code_length; k ++) {
- if (!IS_HEX_AT(parser->buffer, k)) {
- yaml_parser_set_scanner_error(parser, "while parsing a quoted scalar",
- start_mark, "did not find expected hexdecimal number");
- goto error;
- }
- value = (value << 4) + AS_HEX_AT(parser->buffer, k);
- }
-
- /* Check the value and write the character. */
-
- if ((value >= 0xD800 && value <= 0xDFFF) || value > 0x10FFFF) {
- yaml_parser_set_scanner_error(parser, "while parsing a quoted scalar",
- start_mark, "found invalid Unicode character escape code");
- goto error;
- }
-
- if (value <= 0x7F) {
- *(string.pointer++) = value;
- }
- else if (value <= 0x7FF) {
- *(string.pointer++) = 0xC0 + (value >> 6);
- *(string.pointer++) = 0x80 + (value & 0x3F);
- }
- else if (value <= 0xFFFF) {
- *(string.pointer++) = 0xE0 + (value >> 12);
- *(string.pointer++) = 0x80 + ((value >> 6) & 0x3F);
- *(string.pointer++) = 0x80 + (value & 0x3F);
- }
- else {
- *(string.pointer++) = 0xF0 + (value >> 18);
- *(string.pointer++) = 0x80 + ((value >> 12) & 0x3F);
- *(string.pointer++) = 0x80 + ((value >> 6) & 0x3F);
- *(string.pointer++) = 0x80 + (value & 0x3F);
- }
-
- /* Advance the pointer. */
-
- for (k = 0; k < code_length; k ++) {
- SKIP(parser);
- }
- }
- }
-
- else
- {
- /* It is a non-escaped non-blank character. */
-
- if (!READ(parser, string)) goto error;
- }
-
- if (!CACHE(parser, 2)) goto error;
- }
-
- /* Check if we are at the end of the scalar. */
-
- /* Fix for crash uninitialized value crash
- * Credit for the bug and input is to OSS Fuzz
- * Credit for the fix to Alex Gaynor
- */
- if (!CACHE(parser, 1)) goto error;
- if (CHECK(parser->buffer, single ? '\'' : '"'))
- break;
-
- /* Consume blank characters. */
-
- if (!CACHE(parser, 1)) goto error;
-
- while (IS_BLANK(parser->buffer) || IS_BREAK(parser->buffer))
- {
- if (IS_BLANK(parser->buffer))
- {
- /* Consume a space or a tab character. */
-
- if (!leading_blanks) {
- if (!READ(parser, whitespaces)) goto error;
- }
- else {
- SKIP(parser);
- }
- }
- else
- {
- if (!CACHE(parser, 2)) goto error;
-
- /* Check if it is a first line break. */
-
- if (!leading_blanks)
- {
- CLEAR(parser, whitespaces);
- if (!READ_LINE(parser, leading_break)) goto error;
- leading_blanks = 1;
- }
- else
- {
- if (!READ_LINE(parser, trailing_breaks)) goto error;
- }
- }
- if (!CACHE(parser, 1)) goto error;
- }
-
- /* Join the whitespaces or fold line breaks. */
-
- if (leading_blanks)
- {
- /* Do we need to fold line breaks? */
-
- if (leading_break.start[0] == '\n') {
- if (trailing_breaks.start[0] == '\0') {
- if (!STRING_EXTEND(parser, string)) goto error;
- *(string.pointer++) = ' ';
- }
- else {
- if (!JOIN(parser, string, trailing_breaks)) goto error;
- CLEAR(parser, trailing_breaks);
- }
- CLEAR(parser, leading_break);
- }
- else {
- if (!JOIN(parser, string, leading_break)) goto error;
- if (!JOIN(parser, string, trailing_breaks)) goto error;
- CLEAR(parser, leading_break);
- CLEAR(parser, trailing_breaks);
- }
- }
- else
- {
- if (!JOIN(parser, string, whitespaces)) goto error;
- CLEAR(parser, whitespaces);
- }
- }
-
- /* Eat the right quote. */
-
- SKIP(parser);
-
- end_mark = parser->mark;
-
- /* Create a token. */
-
- SCALAR_TOKEN_INIT(*token, string.start, string.pointer-string.start,
- single ? YAML_SINGLE_QUOTED_SCALAR_STYLE : YAML_DOUBLE_QUOTED_SCALAR_STYLE,
- start_mark, end_mark);
-
- STRING_DEL(parser, leading_break);
- STRING_DEL(parser, trailing_breaks);
- STRING_DEL(parser, whitespaces);
-
- return 1;
-
-error:
- STRING_DEL(parser, string);
- STRING_DEL(parser, leading_break);
- STRING_DEL(parser, trailing_breaks);
- STRING_DEL(parser, whitespaces);
-
- return 0;
-}
-
-/*
- * Scan a plain scalar.
- */
-
-static int
-yaml_parser_scan_plain_scalar(yaml_parser_t *parser, yaml_token_t *token)
-{
- yaml_mark_t start_mark;
- yaml_mark_t end_mark;
- yaml_string_t string = NULL_STRING;
- yaml_string_t leading_break = NULL_STRING;
- yaml_string_t trailing_breaks = NULL_STRING;
- yaml_string_t whitespaces = NULL_STRING;
- int leading_blanks = 0;
- int indent = parser->indent+1;
-
- if (!STRING_INIT(parser, string, INITIAL_STRING_SIZE)) goto error;
- if (!STRING_INIT(parser, leading_break, INITIAL_STRING_SIZE)) goto error;
- if (!STRING_INIT(parser, trailing_breaks, INITIAL_STRING_SIZE)) goto error;
- if (!STRING_INIT(parser, whitespaces, INITIAL_STRING_SIZE)) goto error;
-
- start_mark = end_mark = parser->mark;
-
- /* Consume the content of the plain scalar. */
-
- while (1)
- {
- /* Check for a document indicator. */
-
- if (!CACHE(parser, 4)) goto error;
-
- if (parser->mark.column == 0 &&
- ((CHECK_AT(parser->buffer, '-', 0) &&
- CHECK_AT(parser->buffer, '-', 1) &&
- CHECK_AT(parser->buffer, '-', 2)) ||
- (CHECK_AT(parser->buffer, '.', 0) &&
- CHECK_AT(parser->buffer, '.', 1) &&
- CHECK_AT(parser->buffer, '.', 2))) &&
- IS_BLANKZ_AT(parser->buffer, 3)) break;
-
- /* Check for a comment. */
-
- if (CHECK(parser->buffer, '#'))
- break;
-
- /* Consume non-blank characters. */
-
- while (!IS_BLANKZ(parser->buffer))
- {
- /* Check for "x:" + one of ',?[]{}' in the flow context. TODO: Fix the test "spec-08-13".
- * This is not completely according to the spec
- * See http://yaml.org/spec/1.1/#id907281 9.1.3. Plain
- */
-
- if (parser->flow_level
- && CHECK(parser->buffer, ':')
- && (
- CHECK_AT(parser->buffer, ',', 1)
- || CHECK_AT(parser->buffer, '?', 1)
- || CHECK_AT(parser->buffer, '[', 1)
- || CHECK_AT(parser->buffer, ']', 1)
- || CHECK_AT(parser->buffer, '{', 1)
- || CHECK_AT(parser->buffer, '}', 1)
- )
- ) {
- yaml_parser_set_scanner_error(parser, "while scanning a plain scalar",
- start_mark, "found unexpected ':'");
- goto error;
- }
-
- /* Check for indicators that may end a plain scalar. */
-
- if ((CHECK(parser->buffer, ':') && IS_BLANKZ_AT(parser->buffer, 1))
- || (parser->flow_level &&
- (CHECK(parser->buffer, ',')
- || CHECK(parser->buffer, '[')
- || CHECK(parser->buffer, ']') || CHECK(parser->buffer, '{')
- || CHECK(parser->buffer, '}'))))
- break;
-
- /* Check if we need to join whitespaces and breaks. */
-
- if (leading_blanks || whitespaces.start != whitespaces.pointer)
- {
- if (leading_blanks)
- {
- /* Do we need to fold line breaks? */
-
- if (leading_break.start[0] == '\n') {
- if (trailing_breaks.start[0] == '\0') {
- if (!STRING_EXTEND(parser, string)) goto error;
- *(string.pointer++) = ' ';
- }
- else {
- if (!JOIN(parser, string, trailing_breaks)) goto error;
- CLEAR(parser, trailing_breaks);
- }
- CLEAR(parser, leading_break);
- }
- else {
- if (!JOIN(parser, string, leading_break)) goto error;
- if (!JOIN(parser, string, trailing_breaks)) goto error;
- CLEAR(parser, leading_break);
- CLEAR(parser, trailing_breaks);
- }
-
- leading_blanks = 0;
- }
- else
- {
- if (!JOIN(parser, string, whitespaces)) goto error;
- CLEAR(parser, whitespaces);
- }
- }
-
- /* Copy the character. */
-
- if (!READ(parser, string)) goto error;
-
- end_mark = parser->mark;
-
- if (!CACHE(parser, 2)) goto error;
- }
-
- /* Is it the end? */
-
- if (!(IS_BLANK(parser->buffer) || IS_BREAK(parser->buffer)))
- break;
-
- /* Consume blank characters. */
-
- if (!CACHE(parser, 1)) goto error;
-
- while (IS_BLANK(parser->buffer) || IS_BREAK(parser->buffer))
- {
- if (IS_BLANK(parser->buffer))
- {
- /* Check for tab characters that abuse indentation. */
-
- if (leading_blanks && (int)parser->mark.column < indent
- && IS_TAB(parser->buffer)) {
- yaml_parser_set_scanner_error(parser, "while scanning a plain scalar",
- start_mark, "found a tab character that violates indentation");
- goto error;
- }
-
- /* Consume a space or a tab character. */
-
- if (!leading_blanks) {
- if (!READ(parser, whitespaces)) goto error;
- }
- else {
- SKIP(parser);
- }
- }
- else
- {
- if (!CACHE(parser, 2)) goto error;
-
- /* Check if it is a first line break. */
-
- if (!leading_blanks)
- {
- CLEAR(parser, whitespaces);
- if (!READ_LINE(parser, leading_break)) goto error;
- leading_blanks = 1;
- }
- else
- {
- if (!READ_LINE(parser, trailing_breaks)) goto error;
- }
- }
- if (!CACHE(parser, 1)) goto error;
- }
-
- /* Check indentation level. */
-
- if (!parser->flow_level && (int)parser->mark.column < indent)
- break;
- }
-
- /* Create a token. */
-
- SCALAR_TOKEN_INIT(*token, string.start, string.pointer-string.start,
- YAML_PLAIN_SCALAR_STYLE, start_mark, end_mark);
-
- /* Note that we change the 'simple_key_allowed' flag. */
-
- if (leading_blanks) {
- parser->simple_key_allowed = 1;
- }
-
- STRING_DEL(parser, leading_break);
- STRING_DEL(parser, trailing_breaks);
- STRING_DEL(parser, whitespaces);
-
- return 1;
-
-error:
- STRING_DEL(parser, string);
- STRING_DEL(parser, leading_break);
- STRING_DEL(parser, trailing_breaks);
- STRING_DEL(parser, whitespaces);
-
- return 0;
-}
diff --git a/ext/psych/yaml/writer.c b/ext/psych/yaml/writer.c
deleted file mode 100644
index 5d57f392f1..0000000000
--- a/ext/psych/yaml/writer.c
+++ /dev/null
@@ -1,141 +0,0 @@
-
-#include "yaml_private.h"
-
-/*
- * Declarations.
- */
-
-static int
-yaml_emitter_set_writer_error(yaml_emitter_t *emitter, const char *problem);
-
-YAML_DECLARE(int)
-yaml_emitter_flush(yaml_emitter_t *emitter);
-
-/*
- * Set the writer error and return 0.
- */
-
-static int
-yaml_emitter_set_writer_error(yaml_emitter_t *emitter, const char *problem)
-{
- emitter->error = YAML_WRITER_ERROR;
- emitter->problem = problem;
-
- return 0;
-}
-
-/*
- * Flush the output buffer.
- */
-
-YAML_DECLARE(int)
-yaml_emitter_flush(yaml_emitter_t *emitter)
-{
- int low, high;
-
- assert(emitter); /* Non-NULL emitter object is expected. */
- assert(emitter->write_handler); /* Write handler must be set. */
- assert(emitter->encoding); /* Output encoding must be set. */
-
- emitter->buffer.last = emitter->buffer.pointer;
- emitter->buffer.pointer = emitter->buffer.start;
-
- /* Check if the buffer is empty. */
-
- if (emitter->buffer.start == emitter->buffer.last) {
- return 1;
- }
-
- /* If the output encoding is UTF-8, we don't need to recode the buffer. */
-
- if (emitter->encoding == YAML_UTF8_ENCODING)
- {
- if (emitter->write_handler(emitter->write_handler_data,
- emitter->buffer.start,
- emitter->buffer.last - emitter->buffer.start)) {
- emitter->buffer.last = emitter->buffer.start;
- emitter->buffer.pointer = emitter->buffer.start;
- return 1;
- }
- else {
- return yaml_emitter_set_writer_error(emitter, "write error");
- }
- }
-
- /* Recode the buffer into the raw buffer. */
-
- low = (emitter->encoding == YAML_UTF16LE_ENCODING ? 0 : 1);
- high = (emitter->encoding == YAML_UTF16LE_ENCODING ? 1 : 0);
-
- while (emitter->buffer.pointer != emitter->buffer.last)
- {
- unsigned char octet;
- unsigned int width;
- unsigned int value;
- size_t k;
-
- /*
- * See the "reader.c" code for more details on UTF-8 encoding. Note
- * that we assume that the buffer contains a valid UTF-8 sequence.
- */
-
- /* Read the next UTF-8 character. */
-
- octet = emitter->buffer.pointer[0];
-
- width = (octet & 0x80) == 0x00 ? 1 :
- (octet & 0xE0) == 0xC0 ? 2 :
- (octet & 0xF0) == 0xE0 ? 3 :
- (octet & 0xF8) == 0xF0 ? 4 : 0;
-
- value = (octet & 0x80) == 0x00 ? octet & 0x7F :
- (octet & 0xE0) == 0xC0 ? octet & 0x1F :
- (octet & 0xF0) == 0xE0 ? octet & 0x0F :
- (octet & 0xF8) == 0xF0 ? octet & 0x07 : 0;
-
- for (k = 1; k < width; k ++) {
- octet = emitter->buffer.pointer[k];
- value = (value << 6) + (octet & 0x3F);
- }
-
- emitter->buffer.pointer += width;
-
- /* Write the character. */
-
- if (value < 0x10000)
- {
- emitter->raw_buffer.last[high] = value >> 8;
- emitter->raw_buffer.last[low] = value & 0xFF;
-
- emitter->raw_buffer.last += 2;
- }
- else
- {
- /* Write the character using a surrogate pair (check "reader.c"). */
-
- value -= 0x10000;
- emitter->raw_buffer.last[high] = 0xD8 + (value >> 18);
- emitter->raw_buffer.last[low] = (value >> 10) & 0xFF;
- emitter->raw_buffer.last[high+2] = 0xDC + ((value >> 8) & 0xFF);
- emitter->raw_buffer.last[low+2] = value & 0xFF;
-
- emitter->raw_buffer.last += 4;
- }
- }
-
- /* Write the raw buffer. */
-
- if (emitter->write_handler(emitter->write_handler_data,
- emitter->raw_buffer.start,
- emitter->raw_buffer.last - emitter->raw_buffer.start)) {
- emitter->buffer.last = emitter->buffer.start;
- emitter->buffer.pointer = emitter->buffer.start;
- emitter->raw_buffer.last = emitter->raw_buffer.start;
- emitter->raw_buffer.pointer = emitter->raw_buffer.start;
- return 1;
- }
- else {
- return yaml_emitter_set_writer_error(emitter, "write error");
- }
-}
-
diff --git a/ext/psych/yaml/yaml.h b/ext/psych/yaml/yaml.h
deleted file mode 100644
index f1b7bfde20..0000000000
--- a/ext/psych/yaml/yaml.h
+++ /dev/null
@@ -1,1985 +0,0 @@
-/**
- * @file yaml.h
- * @brief Public interface for libyaml.
- *
- * Include the header file with the code:
- * @code
- * #include <yaml.h>
- * @endcode
- */
-
-#ifndef YAML_H
-#define YAML_H
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-#include <stdlib.h>
-#include <stdio.h>
-#include <string.h>
-
-/**
- * @defgroup export Export Definitions
- * @{
- */
-
-/** The public API declaration. */
-
-#if defined(__MINGW32__)
-# define YAML_DECLARE(type) type
-#elif defined(_WIN32)
-# if defined(YAML_DECLARE_STATIC)
-# define YAML_DECLARE(type) type
-# elif defined(YAML_DECLARE_EXPORT)
-# define YAML_DECLARE(type) __declspec(dllexport) type
-# else
-# define YAML_DECLARE(type) __declspec(dllimport) type
-# endif
-#else
-# define YAML_DECLARE(type) type
-#endif
-
-/** @} */
-
-/**
- * @defgroup version Version Information
- * @{
- */
-
-/**
- * Get the library version as a string.
- *
- * @returns The function returns the pointer to a static string of the form
- * @c "X.Y.Z", where @c X is the major version number, @c Y is a minor version
- * number, and @c Z is the patch version number.
- */
-
-YAML_DECLARE(const char *)
-yaml_get_version_string(void);
-
-/**
- * Get the library version numbers.
- *
- * @param[out] major Major version number.
- * @param[out] minor Minor version number.
- * @param[out] patch Patch version number.
- */
-
-YAML_DECLARE(void)
-yaml_get_version(int *major, int *minor, int *patch);
-
-/** @} */
-
-/**
- * @defgroup basic Basic Types
- * @{
- */
-
-/** The character type (UTF-8 octet). */
-typedef unsigned char yaml_char_t;
-
-/** The version directive data. */
-typedef struct yaml_version_directive_s {
- /** The major version number. */
- int major;
- /** The minor version number. */
- int minor;
-} yaml_version_directive_t;
-
-/** The tag directive data. */
-typedef struct yaml_tag_directive_s {
- /** The tag handle. */
- yaml_char_t *handle;
- /** The tag prefix. */
- yaml_char_t *prefix;
-} yaml_tag_directive_t;
-
-/** The stream encoding. */
-typedef enum yaml_encoding_e {
- /** Let the parser choose the encoding. */
- YAML_ANY_ENCODING,
- /** The default UTF-8 encoding. */
- YAML_UTF8_ENCODING,
- /** The UTF-16-LE encoding with BOM. */
- YAML_UTF16LE_ENCODING,
- /** The UTF-16-BE encoding with BOM. */
- YAML_UTF16BE_ENCODING
-} yaml_encoding_t;
-
-/** Line break types. */
-
-typedef enum yaml_break_e {
- /** Let the parser choose the break type. */
- YAML_ANY_BREAK,
- /** Use CR for line breaks (Mac style). */
- YAML_CR_BREAK,
- /** Use LN for line breaks (Unix style). */
- YAML_LN_BREAK,
- /** Use CR LN for line breaks (DOS style). */
- YAML_CRLN_BREAK
-} yaml_break_t;
-
-/** Many bad things could happen with the parser and emitter. */
-typedef enum yaml_error_type_e {
- /** No error is produced. */
- YAML_NO_ERROR,
-
- /** Cannot allocate or reallocate a block of memory. */
- YAML_MEMORY_ERROR,
-
- /** Cannot read or decode the input stream. */
- YAML_READER_ERROR,
- /** Cannot scan the input stream. */
- YAML_SCANNER_ERROR,
- /** Cannot parse the input stream. */
- YAML_PARSER_ERROR,
- /** Cannot compose a YAML document. */
- YAML_COMPOSER_ERROR,
-
- /** Cannot write to the output stream. */
- YAML_WRITER_ERROR,
- /** Cannot emit a YAML stream. */
- YAML_EMITTER_ERROR
-} yaml_error_type_t;
-
-/** The pointer position. */
-typedef struct yaml_mark_s {
- /** The position index. */
- size_t index;
-
- /** The position line. */
- size_t line;
-
- /** The position column. */
- size_t column;
-} yaml_mark_t;
-
-/** @} */
-
-/**
- * @defgroup styles Node Styles
- * @{
- */
-
-/** Scalar styles. */
-typedef enum yaml_scalar_style_e {
- /** Let the emitter choose the style. */
- YAML_ANY_SCALAR_STYLE,
-
- /** The plain scalar style. */
- YAML_PLAIN_SCALAR_STYLE,
-
- /** The single-quoted scalar style. */
- YAML_SINGLE_QUOTED_SCALAR_STYLE,
- /** The double-quoted scalar style. */
- YAML_DOUBLE_QUOTED_SCALAR_STYLE,
-
- /** The literal scalar style. */
- YAML_LITERAL_SCALAR_STYLE,
- /** The folded scalar style. */
- YAML_FOLDED_SCALAR_STYLE
-} yaml_scalar_style_t;
-
-/** Sequence styles. */
-typedef enum yaml_sequence_style_e {
- /** Let the emitter choose the style. */
- YAML_ANY_SEQUENCE_STYLE,
-
- /** The block sequence style. */
- YAML_BLOCK_SEQUENCE_STYLE,
- /** The flow sequence style. */
- YAML_FLOW_SEQUENCE_STYLE
-} yaml_sequence_style_t;
-
-/** Mapping styles. */
-typedef enum yaml_mapping_style_e {
- /** Let the emitter choose the style. */
- YAML_ANY_MAPPING_STYLE,
-
- /** The block mapping style. */
- YAML_BLOCK_MAPPING_STYLE,
- /** The flow mapping style. */
- YAML_FLOW_MAPPING_STYLE
-/* YAML_FLOW_SET_MAPPING_STYLE */
-} yaml_mapping_style_t;
-
-/** @} */
-
-/**
- * @defgroup tokens Tokens
- * @{
- */
-
-/** Token types. */
-typedef enum yaml_token_type_e {
- /** An empty token. */
- YAML_NO_TOKEN,
-
- /** A STREAM-START token. */
- YAML_STREAM_START_TOKEN,
- /** A STREAM-END token. */
- YAML_STREAM_END_TOKEN,
-
- /** A VERSION-DIRECTIVE token. */
- YAML_VERSION_DIRECTIVE_TOKEN,
- /** A TAG-DIRECTIVE token. */
- YAML_TAG_DIRECTIVE_TOKEN,
- /** A DOCUMENT-START token. */
- YAML_DOCUMENT_START_TOKEN,
- /** A DOCUMENT-END token. */
- YAML_DOCUMENT_END_TOKEN,
-
- /** A BLOCK-SEQUENCE-START token. */
- YAML_BLOCK_SEQUENCE_START_TOKEN,
- /** A BLOCK-MAPPING-START token. */
- YAML_BLOCK_MAPPING_START_TOKEN,
- /** A BLOCK-END token. */
- YAML_BLOCK_END_TOKEN,
-
- /** A FLOW-SEQUENCE-START token. */
- YAML_FLOW_SEQUENCE_START_TOKEN,
- /** A FLOW-SEQUENCE-END token. */
- YAML_FLOW_SEQUENCE_END_TOKEN,
- /** A FLOW-MAPPING-START token. */
- YAML_FLOW_MAPPING_START_TOKEN,
- /** A FLOW-MAPPING-END token. */
- YAML_FLOW_MAPPING_END_TOKEN,
-
- /** A BLOCK-ENTRY token. */
- YAML_BLOCK_ENTRY_TOKEN,
- /** A FLOW-ENTRY token. */
- YAML_FLOW_ENTRY_TOKEN,
- /** A KEY token. */
- YAML_KEY_TOKEN,
- /** A VALUE token. */
- YAML_VALUE_TOKEN,
-
- /** An ALIAS token. */
- YAML_ALIAS_TOKEN,
- /** An ANCHOR token. */
- YAML_ANCHOR_TOKEN,
- /** A TAG token. */
- YAML_TAG_TOKEN,
- /** A SCALAR token. */
- YAML_SCALAR_TOKEN
-} yaml_token_type_t;
-
-/** The token structure. */
-typedef struct yaml_token_s {
-
- /** The token type. */
- yaml_token_type_t type;
-
- /** The token data. */
- union {
-
- /** The stream start (for @c YAML_STREAM_START_TOKEN). */
- struct {
- /** The stream encoding. */
- yaml_encoding_t encoding;
- } stream_start;
-
- /** The alias (for @c YAML_ALIAS_TOKEN). */
- struct {
- /** The alias value. */
- yaml_char_t *value;
- } alias;
-
- /** The anchor (for @c YAML_ANCHOR_TOKEN). */
- struct {
- /** The anchor value. */
- yaml_char_t *value;
- } anchor;
-
- /** The tag (for @c YAML_TAG_TOKEN). */
- struct {
- /** The tag handle. */
- yaml_char_t *handle;
- /** The tag suffix. */
- yaml_char_t *suffix;
- } tag;
-
- /** The scalar value (for @c YAML_SCALAR_TOKEN). */
- struct {
- /** The scalar value. */
- yaml_char_t *value;
- /** The length of the scalar value. */
- size_t length;
- /** The scalar style. */
- yaml_scalar_style_t style;
- } scalar;
-
- /** The version directive (for @c YAML_VERSION_DIRECTIVE_TOKEN). */
- struct {
- /** The major version number. */
- int major;
- /** The minor version number. */
- int minor;
- } version_directive;
-
- /** The tag directive (for @c YAML_TAG_DIRECTIVE_TOKEN). */
- struct {
- /** The tag handle. */
- yaml_char_t *handle;
- /** The tag prefix. */
- yaml_char_t *prefix;
- } tag_directive;
-
- } data;
-
- /** The beginning of the token. */
- yaml_mark_t start_mark;
- /** The end of the token. */
- yaml_mark_t end_mark;
-
-} yaml_token_t;
-
-/**
- * Free any memory allocated for a token object.
- *
- * @param[in,out] token A token object.
- */
-
-YAML_DECLARE(void)
-yaml_token_delete(yaml_token_t *token);
-
-/** @} */
-
-/**
- * @defgroup events Events
- * @{
- */
-
-/** Event types. */
-typedef enum yaml_event_type_e {
- /** An empty event. */
- YAML_NO_EVENT,
-
- /** A STREAM-START event. */
- YAML_STREAM_START_EVENT,
- /** A STREAM-END event. */
- YAML_STREAM_END_EVENT,
-
- /** A DOCUMENT-START event. */
- YAML_DOCUMENT_START_EVENT,
- /** A DOCUMENT-END event. */
- YAML_DOCUMENT_END_EVENT,
-
- /** An ALIAS event. */
- YAML_ALIAS_EVENT,
- /** A SCALAR event. */
- YAML_SCALAR_EVENT,
-
- /** A SEQUENCE-START event. */
- YAML_SEQUENCE_START_EVENT,
- /** A SEQUENCE-END event. */
- YAML_SEQUENCE_END_EVENT,
-
- /** A MAPPING-START event. */
- YAML_MAPPING_START_EVENT,
- /** A MAPPING-END event. */
- YAML_MAPPING_END_EVENT
-} yaml_event_type_t;
-
-/** The event structure. */
-typedef struct yaml_event_s {
-
- /** The event type. */
- yaml_event_type_t type;
-
- /** The event data. */
- union {
-
- /** The stream parameters (for @c YAML_STREAM_START_EVENT). */
- struct {
- /** The document encoding. */
- yaml_encoding_t encoding;
- } stream_start;
-
- /** The document parameters (for @c YAML_DOCUMENT_START_EVENT). */
- struct {
- /** The version directive. */
- yaml_version_directive_t *version_directive;
-
- /** The list of tag directives. */
- struct {
- /** The beginning of the tag directives list. */
- yaml_tag_directive_t *start;
- /** The end of the tag directives list. */
- yaml_tag_directive_t *end;
- } tag_directives;
-
- /** Is the document indicator implicit? */
- int implicit;
- } document_start;
-
- /** The document end parameters (for @c YAML_DOCUMENT_END_EVENT). */
- struct {
- /** Is the document end indicator implicit? */
- int implicit;
- } document_end;
-
- /** The alias parameters (for @c YAML_ALIAS_EVENT). */
- struct {
- /** The anchor. */
- yaml_char_t *anchor;
- } alias;
-
- /** The scalar parameters (for @c YAML_SCALAR_EVENT). */
- struct {
- /** The anchor. */
- yaml_char_t *anchor;
- /** The tag. */
- yaml_char_t *tag;
- /** The scalar value. */
- yaml_char_t *value;
- /** The length of the scalar value. */
- size_t length;
- /** Is the tag optional for the plain style? */
- int plain_implicit;
- /** Is the tag optional for any non-plain style? */
- int quoted_implicit;
- /** The scalar style. */
- yaml_scalar_style_t style;
- } scalar;
-
- /** The sequence parameters (for @c YAML_SEQUENCE_START_EVENT). */
- struct {
- /** The anchor. */
- yaml_char_t *anchor;
- /** The tag. */
- yaml_char_t *tag;
- /** Is the tag optional? */
- int implicit;
- /** The sequence style. */
- yaml_sequence_style_t style;
- } sequence_start;
-
- /** The mapping parameters (for @c YAML_MAPPING_START_EVENT). */
- struct {
- /** The anchor. */
- yaml_char_t *anchor;
- /** The tag. */
- yaml_char_t *tag;
- /** Is the tag optional? */
- int implicit;
- /** The mapping style. */
- yaml_mapping_style_t style;
- } mapping_start;
-
- } data;
-
- /** The beginning of the event. */
- yaml_mark_t start_mark;
- /** The end of the event. */
- yaml_mark_t end_mark;
-
-} yaml_event_t;
-
-/**
- * Create the STREAM-START event.
- *
- * @param[out] event An empty event object.
- * @param[in] encoding The stream encoding.
- *
- * @returns @c 1 if the function succeeded, @c 0 on error.
- */
-
-YAML_DECLARE(int)
-yaml_stream_start_event_initialize(yaml_event_t *event,
- yaml_encoding_t encoding);
-
-/**
- * Create the STREAM-END event.
- *
- * @param[out] event An empty event object.
- *
- * @returns @c 1 if the function succeeded, @c 0 on error.
- */
-
-YAML_DECLARE(int)
-yaml_stream_end_event_initialize(yaml_event_t *event);
-
-/**
- * Create the DOCUMENT-START event.
- *
- * The @a implicit argument is considered as a stylistic parameter and may be
- * ignored by the emitter.
- *
- * @param[out] event An empty event object.
- * @param[in] version_directive The %YAML directive value or
- * @c NULL.
- * @param[in] tag_directives_start The beginning of the %TAG
- * directives list.
- * @param[in] tag_directives_end The end of the %TAG directives
- * list.
- * @param[in] implicit If the document start indicator is
- * implicit.
- *
- * @returns @c 1 if the function succeeded, @c 0 on error.
- */
-
-YAML_DECLARE(int)
-yaml_document_start_event_initialize(yaml_event_t *event,
- yaml_version_directive_t *version_directive,
- yaml_tag_directive_t *tag_directives_start,
- yaml_tag_directive_t *tag_directives_end,
- int implicit);
-
-/**
- * Create the DOCUMENT-END event.
- *
- * The @a implicit argument is considered as a stylistic parameter and may be
- * ignored by the emitter.
- *
- * @param[out] event An empty event object.
- * @param[in] implicit If the document end indicator is implicit.
- *
- * @returns @c 1 if the function succeeded, @c 0 on error.
- */
-
-YAML_DECLARE(int)
-yaml_document_end_event_initialize(yaml_event_t *event, int implicit);
-
-/**
- * Create an ALIAS event.
- *
- * @param[out] event An empty event object.
- * @param[in] anchor The anchor value.
- *
- * @returns @c 1 if the function succeeded, @c 0 on error.
- */
-
-YAML_DECLARE(int)
-yaml_alias_event_initialize(yaml_event_t *event, const yaml_char_t *anchor);
-
-/**
- * Create a SCALAR event.
- *
- * The @a style argument may be ignored by the emitter.
- *
- * Either the @a tag attribute or one of the @a plain_implicit and
- * @a quoted_implicit flags must be set.
- *
- * @param[out] event An empty event object.
- * @param[in] anchor The scalar anchor or @c NULL.
- * @param[in] tag The scalar tag or @c NULL.
- * @param[in] value The scalar value.
- * @param[in] length The length of the scalar value.
- * @param[in] plain_implicit If the tag may be omitted for the plain
- * style.
- * @param[in] quoted_implicit If the tag may be omitted for any
- * non-plain style.
- * @param[in] style The scalar style.
- *
- * @returns @c 1 if the function succeeded, @c 0 on error.
- */
-
-YAML_DECLARE(int)
-yaml_scalar_event_initialize(yaml_event_t *event,
- const yaml_char_t *anchor, const yaml_char_t *tag,
- const yaml_char_t *value, int length,
- int plain_implicit, int quoted_implicit,
- yaml_scalar_style_t style);
-
-/**
- * Create a SEQUENCE-START event.
- *
- * The @a style argument may be ignored by the emitter.
- *
- * Either the @a tag attribute or the @a implicit flag must be set.
- *
- * @param[out] event An empty event object.
- * @param[in] anchor The sequence anchor or @c NULL.
- * @param[in] tag The sequence tag or @c NULL.
- * @param[in] implicit If the tag may be omitted.
- * @param[in] style The sequence style.
- *
- * @returns @c 1 if the function succeeded, @c 0 on error.
- */
-
-YAML_DECLARE(int)
-yaml_sequence_start_event_initialize(yaml_event_t *event,
- const yaml_char_t *anchor, const yaml_char_t *tag, int implicit,
- yaml_sequence_style_t style);
-
-/**
- * Create a SEQUENCE-END event.
- *
- * @param[out] event An empty event object.
- *
- * @returns @c 1 if the function succeeded, @c 0 on error.
- */
-
-YAML_DECLARE(int)
-yaml_sequence_end_event_initialize(yaml_event_t *event);
-
-/**
- * Create a MAPPING-START event.
- *
- * The @a style argument may be ignored by the emitter.
- *
- * Either the @a tag attribute or the @a implicit flag must be set.
- *
- * @param[out] event An empty event object.
- * @param[in] anchor The mapping anchor or @c NULL.
- * @param[in] tag The mapping tag or @c NULL.
- * @param[in] implicit If the tag may be omitted.
- * @param[in] style The mapping style.
- *
- * @returns @c 1 if the function succeeded, @c 0 on error.
- */
-
-YAML_DECLARE(int)
-yaml_mapping_start_event_initialize(yaml_event_t *event,
- const yaml_char_t *anchor, const yaml_char_t *tag, int implicit,
- yaml_mapping_style_t style);
-
-/**
- * Create a MAPPING-END event.
- *
- * @param[out] event An empty event object.
- *
- * @returns @c 1 if the function succeeded, @c 0 on error.
- */
-
-YAML_DECLARE(int)
-yaml_mapping_end_event_initialize(yaml_event_t *event);
-
-/**
- * Free any memory allocated for an event object.
- *
- * @param[in,out] event An event object.
- */
-
-YAML_DECLARE(void)
-yaml_event_delete(yaml_event_t *event);
-
-/** @} */
-
-/**
- * @defgroup nodes Nodes
- * @{
- */
-
-/** The tag @c !!null with the only possible value: @c null. */
-#define YAML_NULL_TAG "tag:yaml.org,2002:null"
-/** The tag @c !!bool with the values: @c true and @c false. */
-#define YAML_BOOL_TAG "tag:yaml.org,2002:bool"
-/** The tag @c !!str for string values. */
-#define YAML_STR_TAG "tag:yaml.org,2002:str"
-/** The tag @c !!int for integer values. */
-#define YAML_INT_TAG "tag:yaml.org,2002:int"
-/** The tag @c !!float for float values. */
-#define YAML_FLOAT_TAG "tag:yaml.org,2002:float"
-/** The tag @c !!timestamp for date and time values. */
-#define YAML_TIMESTAMP_TAG "tag:yaml.org,2002:timestamp"
-
-/** The tag @c !!seq is used to denote sequences. */
-#define YAML_SEQ_TAG "tag:yaml.org,2002:seq"
-/** The tag @c !!map is used to denote mapping. */
-#define YAML_MAP_TAG "tag:yaml.org,2002:map"
-
-/** The default scalar tag is @c !!str. */
-#define YAML_DEFAULT_SCALAR_TAG YAML_STR_TAG
-/** The default sequence tag is @c !!seq. */
-#define YAML_DEFAULT_SEQUENCE_TAG YAML_SEQ_TAG
-/** The default mapping tag is @c !!map. */
-#define YAML_DEFAULT_MAPPING_TAG YAML_MAP_TAG
-
-/** Node types. */
-typedef enum yaml_node_type_e {
- /** An empty node. */
- YAML_NO_NODE,
-
- /** A scalar node. */
- YAML_SCALAR_NODE,
- /** A sequence node. */
- YAML_SEQUENCE_NODE,
- /** A mapping node. */
- YAML_MAPPING_NODE
-} yaml_node_type_t;
-
-/** The forward definition of a document node structure. */
-typedef struct yaml_node_s yaml_node_t;
-
-/** An element of a sequence node. */
-typedef int yaml_node_item_t;
-
-/** An element of a mapping node. */
-typedef struct yaml_node_pair_s {
- /** The key of the element. */
- int key;
- /** The value of the element. */
- int value;
-} yaml_node_pair_t;
-
-/** The node structure. */
-struct yaml_node_s {
-
- /** The node type. */
- yaml_node_type_t type;
-
- /** The node tag. */
- yaml_char_t *tag;
-
- /** The node data. */
- union {
-
- /** The scalar parameters (for @c YAML_SCALAR_NODE). */
- struct {
- /** The scalar value. */
- yaml_char_t *value;
- /** The length of the scalar value. */
- size_t length;
- /** The scalar style. */
- yaml_scalar_style_t style;
- } scalar;
-
- /** The sequence parameters (for @c YAML_SEQUENCE_NODE). */
- struct {
- /** The stack of sequence items. */
- struct {
- /** The beginning of the stack. */
- yaml_node_item_t *start;
- /** The end of the stack. */
- yaml_node_item_t *end;
- /** The top of the stack. */
- yaml_node_item_t *top;
- } items;
- /** The sequence style. */
- yaml_sequence_style_t style;
- } sequence;
-
- /** The mapping parameters (for @c YAML_MAPPING_NODE). */
- struct {
- /** The stack of mapping pairs (key, value). */
- struct {
- /** The beginning of the stack. */
- yaml_node_pair_t *start;
- /** The end of the stack. */
- yaml_node_pair_t *end;
- /** The top of the stack. */
- yaml_node_pair_t *top;
- } pairs;
- /** The mapping style. */
- yaml_mapping_style_t style;
- } mapping;
-
- } data;
-
- /** The beginning of the node. */
- yaml_mark_t start_mark;
- /** The end of the node. */
- yaml_mark_t end_mark;
-
-};
-
-/** The document structure. */
-typedef struct yaml_document_s {
-
- /** The document nodes. */
- struct {
- /** The beginning of the stack. */
- yaml_node_t *start;
- /** The end of the stack. */
- yaml_node_t *end;
- /** The top of the stack. */
- yaml_node_t *top;
- } nodes;
-
- /** The version directive. */
- yaml_version_directive_t *version_directive;
-
- /** The list of tag directives. */
- struct {
- /** The beginning of the tag directives list. */
- yaml_tag_directive_t *start;
- /** The end of the tag directives list. */
- yaml_tag_directive_t *end;
- } tag_directives;
-
- /** Is the document start indicator implicit? */
- int start_implicit;
- /** Is the document end indicator implicit? */
- int end_implicit;
-
- /** The beginning of the document. */
- yaml_mark_t start_mark;
- /** The end of the document. */
- yaml_mark_t end_mark;
-
-} yaml_document_t;
-
-/**
- * Create a YAML document.
- *
- * @param[out] document An empty document object.
- * @param[in] version_directive The %YAML directive value or
- * @c NULL.
- * @param[in] tag_directives_start The beginning of the %TAG
- * directives list.
- * @param[in] tag_directives_end The end of the %TAG directives
- * list.
- * @param[in] start_implicit If the document start indicator is
- * implicit.
- * @param[in] end_implicit If the document end indicator is
- * implicit.
- *
- * @returns @c 1 if the function succeeded, @c 0 on error.
- */
-
-YAML_DECLARE(int)
-yaml_document_initialize(yaml_document_t *document,
- yaml_version_directive_t *version_directive,
- yaml_tag_directive_t *tag_directives_start,
- yaml_tag_directive_t *tag_directives_end,
- int start_implicit, int end_implicit);
-
-/**
- * Delete a YAML document and all its nodes.
- *
- * @param[in,out] document A document object.
- */
-
-YAML_DECLARE(void)
-yaml_document_delete(yaml_document_t *document);
-
-/**
- * Get a node of a YAML document.
- *
- * The pointer returned by this function is valid until any of the functions
- * modifying the documents are called.
- *
- * @param[in] document A document object.
- * @param[in] index The node id.
- *
- * @returns the node objct or @c NULL if @c node_id is out of range.
- */
-
-YAML_DECLARE(yaml_node_t *)
-yaml_document_get_node(yaml_document_t *document, int index);
-
-/**
- * Get the root of a YAML document node.
- *
- * The root object is the first object added to the document.
- *
- * The pointer returned by this function is valid until any of the functions
- * modifying the documents are called.
- *
- * An empty document produced by the parser signifies the end of a YAML
- * stream.
- *
- * @param[in] document A document object.
- *
- * @returns the node object or @c NULL if the document is empty.
- */
-
-YAML_DECLARE(yaml_node_t *)
-yaml_document_get_root_node(yaml_document_t *document);
-
-/**
- * Create a SCALAR node and attach it to the document.
- *
- * The @a style argument may be ignored by the emitter.
- *
- * @param[in,out] document A document object.
- * @param[in] tag The scalar tag.
- * @param[in] value The scalar value.
- * @param[in] length The length of the scalar value.
- * @param[in] style The scalar style.
- *
- * @returns the node id or @c 0 on error.
- */
-
-YAML_DECLARE(int)
-yaml_document_add_scalar(yaml_document_t *document,
- const yaml_char_t *tag, const yaml_char_t *value, int length,
- yaml_scalar_style_t style);
-
-/**
- * Create a SEQUENCE node and attach it to the document.
- *
- * The @a style argument may be ignored by the emitter.
- *
- * @param[in,out] document A document object.
- * @param[in] tag The sequence tag.
- * @param[in] style The sequence style.
- *
- * @returns the node id or @c 0 on error.
- */
-
-YAML_DECLARE(int)
-yaml_document_add_sequence(yaml_document_t *document,
- const yaml_char_t *tag, yaml_sequence_style_t style);
-
-/**
- * Create a MAPPING node and attach it to the document.
- *
- * The @a style argument may be ignored by the emitter.
- *
- * @param[in,out] document A document object.
- * @param[in] tag The sequence tag.
- * @param[in] style The sequence style.
- *
- * @returns the node id or @c 0 on error.
- */
-
-YAML_DECLARE(int)
-yaml_document_add_mapping(yaml_document_t *document,
- const yaml_char_t *tag, yaml_mapping_style_t style);
-
-/**
- * Add an item to a SEQUENCE node.
- *
- * @param[in,out] document A document object.
- * @param[in] sequence The sequence node id.
- * @param[in] item The item node id.
- *
- * @returns @c 1 if the function succeeded, @c 0 on error.
- */
-
-YAML_DECLARE(int)
-yaml_document_append_sequence_item(yaml_document_t *document,
- int sequence, int item);
-
-/**
- * Add a pair of a key and a value to a MAPPING node.
- *
- * @param[in,out] document A document object.
- * @param[in] mapping The mapping node id.
- * @param[in] key The key node id.
- * @param[in] value The value node id.
- *
- * @returns @c 1 if the function succeeded, @c 0 on error.
- */
-
-YAML_DECLARE(int)
-yaml_document_append_mapping_pair(yaml_document_t *document,
- int mapping, int key, int value);
-
-/** @} */
-
-/**
- * @defgroup parser Parser Definitions
- * @{
- */
-
-/**
- * The prototype of a read handler.
- *
- * The read handler is called when the parser needs to read more bytes from the
- * source. The handler should write not more than @a size bytes to the @a
- * buffer. The number of written bytes should be set to the @a length variable.
- *
- * @param[in,out] data A pointer to an application data specified by
- * yaml_parser_set_input().
- * @param[out] buffer The buffer to write the data from the source.
- * @param[in] size The size of the buffer.
- * @param[out] size_read The actual number of bytes read from the source.
- *
- * @returns On success, the handler should return @c 1. If the handler failed,
- * the returned value should be @c 0. On EOF, the handler should set the
- * @a size_read to @c 0 and return @c 1.
- */
-
-typedef int yaml_read_handler_t(void *data, unsigned char *buffer, size_t size,
- size_t *size_read);
-
-/**
- * This structure holds information about a potential simple key.
- */
-
-typedef struct yaml_simple_key_s {
- /** Is a simple key possible? */
- int possible;
-
- /** Is a simple key required? */
- int required;
-
- /** The number of the token. */
- size_t token_number;
-
- /** The position mark. */
- yaml_mark_t mark;
-} yaml_simple_key_t;
-
-/**
- * The states of the parser.
- */
-typedef enum yaml_parser_state_e {
- /** Expect STREAM-START. */
- YAML_PARSE_STREAM_START_STATE,
- /** Expect the beginning of an implicit document. */
- YAML_PARSE_IMPLICIT_DOCUMENT_START_STATE,
- /** Expect DOCUMENT-START. */
- YAML_PARSE_DOCUMENT_START_STATE,
- /** Expect the content of a document. */
- YAML_PARSE_DOCUMENT_CONTENT_STATE,
- /** Expect DOCUMENT-END. */
- YAML_PARSE_DOCUMENT_END_STATE,
-
- /** Expect a block node. */
- YAML_PARSE_BLOCK_NODE_STATE,
- /** Expect a block node or indentless sequence. */
- YAML_PARSE_BLOCK_NODE_OR_INDENTLESS_SEQUENCE_STATE,
- /** Expect a flow node. */
- YAML_PARSE_FLOW_NODE_STATE,
- /** Expect the first entry of a block sequence. */
- YAML_PARSE_BLOCK_SEQUENCE_FIRST_ENTRY_STATE,
- /** Expect an entry of a block sequence. */
- YAML_PARSE_BLOCK_SEQUENCE_ENTRY_STATE,
-
- /** Expect an entry of an indentless sequence. */
- YAML_PARSE_INDENTLESS_SEQUENCE_ENTRY_STATE,
- /** Expect the first key of a block mapping. */
- YAML_PARSE_BLOCK_MAPPING_FIRST_KEY_STATE,
- /** Expect a block mapping key. */
- YAML_PARSE_BLOCK_MAPPING_KEY_STATE,
- /** Expect a block mapping value. */
- YAML_PARSE_BLOCK_MAPPING_VALUE_STATE,
- /** Expect the first entry of a flow sequence. */
- YAML_PARSE_FLOW_SEQUENCE_FIRST_ENTRY_STATE,
-
- /** Expect an entry of a flow sequence. */
- YAML_PARSE_FLOW_SEQUENCE_ENTRY_STATE,
- /** Expect a key of an ordered mapping. */
- YAML_PARSE_FLOW_SEQUENCE_ENTRY_MAPPING_KEY_STATE,
- /** Expect a value of an ordered mapping. */
- YAML_PARSE_FLOW_SEQUENCE_ENTRY_MAPPING_VALUE_STATE,
- /** Expect the and of an ordered mapping entry. */
- YAML_PARSE_FLOW_SEQUENCE_ENTRY_MAPPING_END_STATE,
- /** Expect the first key of a flow mapping. */
- YAML_PARSE_FLOW_MAPPING_FIRST_KEY_STATE,
- /** Expect a key of a flow mapping. */
-
- YAML_PARSE_FLOW_MAPPING_KEY_STATE,
- /** Expect a value of a flow mapping. */
- YAML_PARSE_FLOW_MAPPING_VALUE_STATE,
- /** Expect an empty value of a flow mapping. */
- YAML_PARSE_FLOW_MAPPING_EMPTY_VALUE_STATE,
- /** Expect nothing. */
- YAML_PARSE_END_STATE
-} yaml_parser_state_t;
-
-/**
- * This structure holds aliases data.
- */
-
-typedef struct yaml_alias_data_s {
- /** The anchor. */
- yaml_char_t *anchor;
- /** The node id. */
- int index;
- /** The anchor mark. */
- yaml_mark_t mark;
-} yaml_alias_data_t;
-
-/**
- * The parser structure.
- *
- * All members are internal. Manage the structure using the @c yaml_parser_
- * family of functions.
- */
-
-typedef struct yaml_parser_s {
-
- /**
- * @name Error handling
- * @{
- */
-
- /** Error type. */
- yaml_error_type_t error;
- /** Error description. */
- const char *problem;
- /** The byte about which the problem occurred. */
- size_t problem_offset;
- /** The problematic value (@c -1 is none). */
- int problem_value;
- /** The problem position. */
- yaml_mark_t problem_mark;
- /** The error context. */
- const char *context;
- /** The context position. */
- yaml_mark_t context_mark;
-
- /**
- * @}
- */
-
- /**
- * @name Reader stuff
- * @{
- */
-
- /** Read handler. */
- yaml_read_handler_t *read_handler;
-
- /** A pointer for passing to the read handler. */
- void *read_handler_data;
-
- /** Standard (string or file) input data. */
- union {
- /** String input data. */
- struct {
- /** The string start pointer. */
- const unsigned char *start;
- /** The string end pointer. */
- const unsigned char *end;
- /** The string current position. */
- const unsigned char *current;
- } string;
-
- /** File input data. */
- FILE *file;
- } input;
-
- /** EOF flag */
- int eof;
-
- /** The working buffer. */
- struct {
- /** The beginning of the buffer. */
- yaml_char_t *start;
- /** The end of the buffer. */
- yaml_char_t *end;
- /** The current position of the buffer. */
- yaml_char_t *pointer;
- /** The last filled position of the buffer. */
- yaml_char_t *last;
- } buffer;
-
- /* The number of unread characters in the buffer. */
- size_t unread;
-
- /** The raw buffer. */
- struct {
- /** The beginning of the buffer. */
- unsigned char *start;
- /** The end of the buffer. */
- unsigned char *end;
- /** The current position of the buffer. */
- unsigned char *pointer;
- /** The last filled position of the buffer. */
- unsigned char *last;
- } raw_buffer;
-
- /** The input encoding. */
- yaml_encoding_t encoding;
-
- /** The offset of the current position (in bytes). */
- size_t offset;
-
- /** The mark of the current position. */
- yaml_mark_t mark;
-
- /**
- * @}
- */
-
- /**
- * @name Scanner stuff
- * @{
- */
-
- /** Have we started to scan the input stream? */
- int stream_start_produced;
-
- /** Have we reached the end of the input stream? */
- int stream_end_produced;
-
- /** The number of unclosed '[' and '{' indicators. */
- int flow_level;
-
- /** The tokens queue. */
- struct {
- /** The beginning of the tokens queue. */
- yaml_token_t *start;
- /** The end of the tokens queue. */
- yaml_token_t *end;
- /** The head of the tokens queue. */
- yaml_token_t *head;
- /** The tail of the tokens queue. */
- yaml_token_t *tail;
- } tokens;
-
- /** The number of tokens fetched from the queue. */
- size_t tokens_parsed;
-
- /** Does the tokens queue contain a token ready for dequeueing. */
- int token_available;
-
- /** The indentation levels stack. */
- struct {
- /** The beginning of the stack. */
- int *start;
- /** The end of the stack. */
- int *end;
- /** The top of the stack. */
- int *top;
- } indents;
-
- /** The current indentation level. */
- int indent;
-
- /** May a simple key occur at the current position? */
- int simple_key_allowed;
-
- /** The stack of simple keys. */
- struct {
- /** The beginning of the stack. */
- yaml_simple_key_t *start;
- /** The end of the stack. */
- yaml_simple_key_t *end;
- /** The top of the stack. */
- yaml_simple_key_t *top;
- } simple_keys;
-
- /**
- * @}
- */
-
- /**
- * @name Parser stuff
- * @{
- */
-
- /** The parser states stack. */
- struct {
- /** The beginning of the stack. */
- yaml_parser_state_t *start;
- /** The end of the stack. */
- yaml_parser_state_t *end;
- /** The top of the stack. */
- yaml_parser_state_t *top;
- } states;
-
- /** The current parser state. */
- yaml_parser_state_t state;
-
- /** The stack of marks. */
- struct {
- /** The beginning of the stack. */
- yaml_mark_t *start;
- /** The end of the stack. */
- yaml_mark_t *end;
- /** The top of the stack. */
- yaml_mark_t *top;
- } marks;
-
- /** The list of TAG directives. */
- struct {
- /** The beginning of the list. */
- yaml_tag_directive_t *start;
- /** The end of the list. */
- yaml_tag_directive_t *end;
- /** The top of the list. */
- yaml_tag_directive_t *top;
- } tag_directives;
-
- /**
- * @}
- */
-
- /**
- * @name Dumper stuff
- * @{
- */
-
- /** The alias data. */
- struct {
- /** The beginning of the list. */
- yaml_alias_data_t *start;
- /** The end of the list. */
- yaml_alias_data_t *end;
- /** The top of the list. */
- yaml_alias_data_t *top;
- } aliases;
-
- /** The currently parsed document. */
- yaml_document_t *document;
-
- /**
- * @}
- */
-
-} yaml_parser_t;
-
-/**
- * Initialize a parser.
- *
- * This function creates a new parser object. An application is responsible
- * for destroying the object using the yaml_parser_delete() function.
- *
- * @param[out] parser An empty parser object.
- *
- * @returns @c 1 if the function succeeded, @c 0 on error.
- */
-
-YAML_DECLARE(int)
-yaml_parser_initialize(yaml_parser_t *parser);
-
-/**
- * Destroy a parser.
- *
- * @param[in,out] parser A parser object.
- */
-
-YAML_DECLARE(void)
-yaml_parser_delete(yaml_parser_t *parser);
-
-/**
- * Set a string input.
- *
- * Note that the @a input pointer must be valid while the @a parser object
- * exists. The application is responsible for destroying @a input after
- * destroying the @a parser.
- *
- * @param[in,out] parser A parser object.
- * @param[in] input A source data.
- * @param[in] size The length of the source data in bytes.
- */
-
-YAML_DECLARE(void)
-yaml_parser_set_input_string(yaml_parser_t *parser,
- const unsigned char *input, size_t size);
-
-/**
- * Set a file input.
- *
- * @a file should be a file object open for reading. The application is
- * responsible for closing the @a file.
- *
- * @param[in,out] parser A parser object.
- * @param[in] file An open file.
- */
-
-YAML_DECLARE(void)
-yaml_parser_set_input_file(yaml_parser_t *parser, FILE *file);
-
-/**
- * Set a generic input handler.
- *
- * @param[in,out] parser A parser object.
- * @param[in] handler A read handler.
- * @param[in] data Any application data for passing to the read
- * handler.
- */
-
-YAML_DECLARE(void)
-yaml_parser_set_input(yaml_parser_t *parser,
- yaml_read_handler_t *handler, void *data);
-
-/**
- * Set the source encoding.
- *
- * @param[in,out] parser A parser object.
- * @param[in] encoding The source encoding.
- */
-
-YAML_DECLARE(void)
-yaml_parser_set_encoding(yaml_parser_t *parser, yaml_encoding_t encoding);
-
-/**
- * Scan the input stream and produce the next token.
- *
- * Call the function subsequently to produce a sequence of tokens corresponding
- * to the input stream. The initial token has the type
- * @c YAML_STREAM_START_TOKEN while the ending token has the type
- * @c YAML_STREAM_END_TOKEN.
- *
- * An application is responsible for freeing any buffers associated with the
- * produced token object using the @c yaml_token_delete function.
- *
- * An application must not alternate the calls of yaml_parser_scan() with the
- * calls of yaml_parser_parse() or yaml_parser_load(). Doing this will break
- * the parser.
- *
- * @param[in,out] parser A parser object.
- * @param[out] token An empty token object.
- *
- * @returns @c 1 if the function succeeded, @c 0 on error.
- */
-
-YAML_DECLARE(int)
-yaml_parser_scan(yaml_parser_t *parser, yaml_token_t *token);
-
-/**
- * Parse the input stream and produce the next parsing event.
- *
- * Call the function subsequently to produce a sequence of events corresponding
- * to the input stream. The initial event has the type
- * @c YAML_STREAM_START_EVENT while the ending event has the type
- * @c YAML_STREAM_END_EVENT.
- *
- * An application is responsible for freeing any buffers associated with the
- * produced event object using the yaml_event_delete() function.
- *
- * An application must not alternate the calls of yaml_parser_parse() with the
- * calls of yaml_parser_scan() or yaml_parser_load(). Doing this will break the
- * parser.
- *
- * @param[in,out] parser A parser object.
- * @param[out] event An empty event object.
- *
- * @returns @c 1 if the function succeeded, @c 0 on error.
- */
-
-YAML_DECLARE(int)
-yaml_parser_parse(yaml_parser_t *parser, yaml_event_t *event);
-
-/**
- * Parse the input stream and produce the next YAML document.
- *
- * Call this function subsequently to produce a sequence of documents
- * constituting the input stream.
- *
- * If the produced document has no root node, it means that the document
- * end has been reached.
- *
- * An application is responsible for freeing any data associated with the
- * produced document object using the yaml_document_delete() function.
- *
- * An application must not alternate the calls of yaml_parser_load() with the
- * calls of yaml_parser_scan() or yaml_parser_parse(). Doing this will break
- * the parser.
- *
- * @param[in,out] parser A parser object.
- * @param[out] document An empty document object.
- *
- * @returns @c 1 if the function succeeded, @c 0 on error.
- */
-
-YAML_DECLARE(int)
-yaml_parser_load(yaml_parser_t *parser, yaml_document_t *document);
-
-/** @} */
-
-/**
- * @defgroup emitter Emitter Definitions
- * @{
- */
-
-/**
- * The prototype of a write handler.
- *
- * The write handler is called when the emitter needs to flush the accumulated
- * characters to the output. The handler should write @a size bytes of the
- * @a buffer to the output.
- *
- * @param[in,out] data A pointer to an application data specified by
- * yaml_emitter_set_output().
- * @param[in] buffer The buffer with bytes to be written.
- * @param[in] size The size of the buffer.
- *
- * @returns On success, the handler should return @c 1. If the handler failed,
- * the returned value should be @c 0.
- */
-
-typedef int yaml_write_handler_t(void *data, unsigned char *buffer, size_t size);
-
-/** The emitter states. */
-typedef enum yaml_emitter_state_e {
- /** Expect STREAM-START. */
- YAML_EMIT_STREAM_START_STATE,
- /** Expect the first DOCUMENT-START or STREAM-END. */
- YAML_EMIT_FIRST_DOCUMENT_START_STATE,
- /** Expect DOCUMENT-START or STREAM-END. */
- YAML_EMIT_DOCUMENT_START_STATE,
- /** Expect the content of a document. */
- YAML_EMIT_DOCUMENT_CONTENT_STATE,
- /** Expect DOCUMENT-END. */
- YAML_EMIT_DOCUMENT_END_STATE,
-
- /** Expect the first item of a flow sequence. */
- YAML_EMIT_FLOW_SEQUENCE_FIRST_ITEM_STATE,
- /** Expect an item of a flow sequence. */
- YAML_EMIT_FLOW_SEQUENCE_ITEM_STATE,
- /** Expect the first key of a flow mapping. */
- YAML_EMIT_FLOW_MAPPING_FIRST_KEY_STATE,
- /** Expect a key of a flow mapping. */
- YAML_EMIT_FLOW_MAPPING_KEY_STATE,
- /** Expect a value for a simple key of a flow mapping. */
- YAML_EMIT_FLOW_MAPPING_SIMPLE_VALUE_STATE,
-
- /** Expect a value of a flow mapping. */
- YAML_EMIT_FLOW_MAPPING_VALUE_STATE,
- /** Expect the first item of a block sequence. */
- YAML_EMIT_BLOCK_SEQUENCE_FIRST_ITEM_STATE,
- /** Expect an item of a block sequence. */
- YAML_EMIT_BLOCK_SEQUENCE_ITEM_STATE,
- /** Expect the first key of a block mapping. */
- YAML_EMIT_BLOCK_MAPPING_FIRST_KEY_STATE,
- /** Expect the key of a block mapping. */
- YAML_EMIT_BLOCK_MAPPING_KEY_STATE,
-
- /** Expect a value for a simple key of a block mapping. */
- YAML_EMIT_BLOCK_MAPPING_SIMPLE_VALUE_STATE,
- /** Expect a value of a block mapping. */
- YAML_EMIT_BLOCK_MAPPING_VALUE_STATE,
- /** Expect nothing. */
- YAML_EMIT_END_STATE
-} yaml_emitter_state_t;
-
-
-/* This is needed for C++ */
-
-typedef struct yaml_anchors_s {
- /** The number of references. */
- int references;
- /** The anchor id. */
- int anchor;
- /** If the node has been emitted? */
- int serialized;
-} yaml_anchors_t;
-
-/**
- * The emitter structure.
- *
- * All members are internal. Manage the structure using the @c yaml_emitter_
- * family of functions.
- */
-
-typedef struct yaml_emitter_s {
-
- /**
- * @name Error handling
- * @{
- */
-
- /** Error type. */
- yaml_error_type_t error;
- /** Error description. */
- const char *problem;
-
- /**
- * @}
- */
-
- /**
- * @name Writer stuff
- * @{
- */
-
- /** Write handler. */
- yaml_write_handler_t *write_handler;
-
- /** A pointer for passing to the write handler. */
- void *write_handler_data;
-
- /** Standard (string or file) output data. */
- union {
- /** String output data. */
- struct {
- /** The buffer pointer. */
- unsigned char *buffer;
- /** The buffer size. */
- size_t size;
- /** The number of written bytes. */
- size_t *size_written;
- } string;
-
- /** File output data. */
- FILE *file;
- } output;
-
- /** The working buffer. */
- struct {
- /** The beginning of the buffer. */
- yaml_char_t *start;
- /** The end of the buffer. */
- yaml_char_t *end;
- /** The current position of the buffer. */
- yaml_char_t *pointer;
- /** The last filled position of the buffer. */
- yaml_char_t *last;
- } buffer;
-
- /** The raw buffer. */
- struct {
- /** The beginning of the buffer. */
- unsigned char *start;
- /** The end of the buffer. */
- unsigned char *end;
- /** The current position of the buffer. */
- unsigned char *pointer;
- /** The last filled position of the buffer. */
- unsigned char *last;
- } raw_buffer;
-
- /** The stream encoding. */
- yaml_encoding_t encoding;
-
- /**
- * @}
- */
-
- /**
- * @name Emitter stuff
- * @{
- */
-
- /** If the output is in the canonical style? */
- int canonical;
- /** The number of indentation spaces. */
- int best_indent;
- /** The preferred width of the output lines. */
- int best_width;
- /** Allow unescaped non-ASCII characters? */
- int unicode;
- /** The preferred line break. */
- yaml_break_t line_break;
-
- /** The stack of states. */
- struct {
- /** The beginning of the stack. */
- yaml_emitter_state_t *start;
- /** The end of the stack. */
- yaml_emitter_state_t *end;
- /** The top of the stack. */
- yaml_emitter_state_t *top;
- } states;
-
- /** The current emitter state. */
- yaml_emitter_state_t state;
-
- /** The event queue. */
- struct {
- /** The beginning of the event queue. */
- yaml_event_t *start;
- /** The end of the event queue. */
- yaml_event_t *end;
- /** The head of the event queue. */
- yaml_event_t *head;
- /** The tail of the event queue. */
- yaml_event_t *tail;
- } events;
-
- /** The stack of indentation levels. */
- struct {
- /** The beginning of the stack. */
- int *start;
- /** The end of the stack. */
- int *end;
- /** The top of the stack. */
- int *top;
- } indents;
-
- /** The list of tag directives. */
- struct {
- /** The beginning of the list. */
- yaml_tag_directive_t *start;
- /** The end of the list. */
- yaml_tag_directive_t *end;
- /** The top of the list. */
- yaml_tag_directive_t *top;
- } tag_directives;
-
- /** The current indentation level. */
- int indent;
-
- /** The current flow level. */
- int flow_level;
-
- /** Is it the document root context? */
- int root_context;
- /** Is it a sequence context? */
- int sequence_context;
- /** Is it a mapping context? */
- int mapping_context;
- /** Is it a simple mapping key context? */
- int simple_key_context;
-
- /** The current line. */
- int line;
- /** The current column. */
- int column;
- /** If the last character was a whitespace? */
- int whitespace;
- /** If the last character was an indentation character (' ', '-', '?', ':')? */
- int indention;
- /** If an explicit document end is required? */
- int open_ended;
-
- /** Anchor analysis. */
- struct {
- /** The anchor value. */
- yaml_char_t *anchor;
- /** The anchor length. */
- size_t anchor_length;
- /** Is it an alias? */
- int alias;
- } anchor_data;
-
- /** Tag analysis. */
- struct {
- /** The tag handle. */
- yaml_char_t *handle;
- /** The tag handle length. */
- size_t handle_length;
- /** The tag suffix. */
- yaml_char_t *suffix;
- /** The tag suffix length. */
- size_t suffix_length;
- } tag_data;
-
- /** Scalar analysis. */
- struct {
- /** The scalar value. */
- yaml_char_t *value;
- /** The scalar length. */
- size_t length;
- /** Does the scalar contain line breaks? */
- int multiline;
- /** Can the scalar be expressed in the flow plain style? */
- int flow_plain_allowed;
- /** Can the scalar be expressed in the block plain style? */
- int block_plain_allowed;
- /** Can the scalar be expressed in the single quoted style? */
- int single_quoted_allowed;
- /** Can the scalar be expressed in the literal or folded styles? */
- int block_allowed;
- /** The output style. */
- yaml_scalar_style_t style;
- } scalar_data;
-
- /**
- * @}
- */
-
- /**
- * @name Dumper stuff
- * @{
- */
-
- /** If the stream was already opened? */
- int opened;
- /** If the stream was already closed? */
- int closed;
-
- /** The information associated with the document nodes. */
- yaml_anchors_t *anchors;
-
- /** The last assigned anchor id. */
- int last_anchor_id;
-
- /** The currently emitted document. */
- yaml_document_t *document;
-
- /**
- * @}
- */
-
-} yaml_emitter_t;
-
-/**
- * Initialize an emitter.
- *
- * This function creates a new emitter object. An application is responsible
- * for destroying the object using the yaml_emitter_delete() function.
- *
- * @param[out] emitter An empty parser object.
- *
- * @returns @c 1 if the function succeeded, @c 0 on error.
- */
-
-YAML_DECLARE(int)
-yaml_emitter_initialize(yaml_emitter_t *emitter);
-
-/**
- * Destroy an emitter.
- *
- * @param[in,out] emitter An emitter object.
- */
-
-YAML_DECLARE(void)
-yaml_emitter_delete(yaml_emitter_t *emitter);
-
-/**
- * Set a string output.
- *
- * The emitter will write the output characters to the @a output buffer of the
- * size @a size. The emitter will set @a size_written to the number of written
- * bytes. If the buffer is smaller than required, the emitter produces the
- * YAML_WRITE_ERROR error.
- *
- * @param[in,out] emitter An emitter object.
- * @param[in] output An output buffer.
- * @param[in] size The buffer size.
- * @param[in] size_written The pointer to save the number of written
- * bytes.
- */
-
-YAML_DECLARE(void)
-yaml_emitter_set_output_string(yaml_emitter_t *emitter,
- unsigned char *output, size_t size, size_t *size_written);
-
-/**
- * Set a file output.
- *
- * @a file should be a file object open for writing. The application is
- * responsible for closing the @a file.
- *
- * @param[in,out] emitter An emitter object.
- * @param[in] file An open file.
- */
-
-YAML_DECLARE(void)
-yaml_emitter_set_output_file(yaml_emitter_t *emitter, FILE *file);
-
-/**
- * Set a generic output handler.
- *
- * @param[in,out] emitter An emitter object.
- * @param[in] handler A write handler.
- * @param[in] data Any application data for passing to the write
- * handler.
- */
-
-YAML_DECLARE(void)
-yaml_emitter_set_output(yaml_emitter_t *emitter,
- yaml_write_handler_t *handler, void *data);
-
-/**
- * Set the output encoding.
- *
- * @param[in,out] emitter An emitter object.
- * @param[in] encoding The output encoding.
- */
-
-YAML_DECLARE(void)
-yaml_emitter_set_encoding(yaml_emitter_t *emitter, yaml_encoding_t encoding);
-
-/**
- * Set if the output should be in the "canonical" format as in the YAML
- * specification.
- *
- * @param[in,out] emitter An emitter object.
- * @param[in] canonical If the output is canonical.
- */
-
-YAML_DECLARE(void)
-yaml_emitter_set_canonical(yaml_emitter_t *emitter, int canonical);
-
-/**
- * Set the indentation increment.
- *
- * @param[in,out] emitter An emitter object.
- * @param[in] indent The indentation increment (1 < . < 10).
- */
-
-YAML_DECLARE(void)
-yaml_emitter_set_indent(yaml_emitter_t *emitter, int indent);
-
-/**
- * Set the preferred line width. @c -1 means unlimited.
- *
- * @param[in,out] emitter An emitter object.
- * @param[in] width The preferred line width.
- */
-
-YAML_DECLARE(void)
-yaml_emitter_set_width(yaml_emitter_t *emitter, int width);
-
-/**
- * Set if unescaped non-ASCII characters are allowed.
- *
- * @param[in,out] emitter An emitter object.
- * @param[in] unicode If unescaped Unicode characters are allowed.
- */
-
-YAML_DECLARE(void)
-yaml_emitter_set_unicode(yaml_emitter_t *emitter, int unicode);
-
-/**
- * Set the preferred line break.
- *
- * @param[in,out] emitter An emitter object.
- * @param[in] line_break The preferred line break.
- */
-
-YAML_DECLARE(void)
-yaml_emitter_set_break(yaml_emitter_t *emitter, yaml_break_t line_break);
-
-/**
- * Emit an event.
- *
- * The event object may be generated using the yaml_parser_parse() function.
- * The emitter takes the responsibility for the event object and destroys its
- * content after it is emitted. The event object is destroyed even if the
- * function fails.
- *
- * @param[in,out] emitter An emitter object.
- * @param[in,out] event An event object.
- *
- * @returns @c 1 if the function succeeded, @c 0 on error.
- */
-
-YAML_DECLARE(int)
-yaml_emitter_emit(yaml_emitter_t *emitter, yaml_event_t *event);
-
-/**
- * Start a YAML stream.
- *
- * This function should be used before yaml_emitter_dump() is called.
- *
- * @param[in,out] emitter An emitter object.
- *
- * @returns @c 1 if the function succeeded, @c 0 on error.
- */
-
-YAML_DECLARE(int)
-yaml_emitter_open(yaml_emitter_t *emitter);
-
-/**
- * Finish a YAML stream.
- *
- * This function should be used after yaml_emitter_dump() is called.
- *
- * @param[in,out] emitter An emitter object.
- *
- * @returns @c 1 if the function succeeded, @c 0 on error.
- */
-
-YAML_DECLARE(int)
-yaml_emitter_close(yaml_emitter_t *emitter);
-
-/**
- * Emit a YAML document.
- *
- * The document object may be generated using the yaml_parser_load() function
- * or the yaml_document_initialize() function. The emitter takes the
- * responsibility for the document object and destroys its content after
- * it is emitted. The document object is destroyed even if the function fails.
- *
- * @param[in,out] emitter An emitter object.
- * @param[in,out] document A document object.
- *
- * @returns @c 1 if the function succeeded, @c 0 on error.
- */
-
-YAML_DECLARE(int)
-yaml_emitter_dump(yaml_emitter_t *emitter, yaml_document_t *document);
-
-/**
- * Flush the accumulated characters to the output.
- *
- * @param[in,out] emitter An emitter object.
- *
- * @returns @c 1 if the function succeeded, @c 0 on error.
- */
-
-YAML_DECLARE(int)
-yaml_emitter_flush(yaml_emitter_t *emitter);
-
-/** @} */
-
-#ifdef __cplusplus
-}
-#endif
-
-#endif /* #ifndef YAML_H */
-
diff --git a/ext/psych/yaml/yaml_private.h b/ext/psych/yaml/yaml_private.h
deleted file mode 100644
index 266a6bd3a7..0000000000
--- a/ext/psych/yaml/yaml_private.h
+++ /dev/null
@@ -1,688 +0,0 @@
-#ifdef RUBY_EXTCONF_H
-#include RUBY_EXTCONF_H
-#endif
-
-#ifdef HAVE_CONFIG_H
-#include "config.h"
-#endif
-
-#include <yaml.h>
-
-#include <assert.h>
-#include <limits.h>
-#include <stddef.h>
-
-/*
- * Memory management.
- */
-
-YAML_DECLARE(void *)
-yaml_malloc(size_t size);
-
-YAML_DECLARE(void *)
-yaml_realloc(void *ptr, size_t size);
-
-YAML_DECLARE(void)
-yaml_free(void *ptr);
-
-YAML_DECLARE(yaml_char_t *)
-yaml_strdup(const yaml_char_t *);
-
-/*
- * Reader: Ensure that the buffer contains at least `length` characters.
- */
-
-YAML_DECLARE(int)
-yaml_parser_update_buffer(yaml_parser_t *parser, size_t length);
-
-/*
- * Scanner: Ensure that the token stack contains at least one token ready.
- */
-
-YAML_DECLARE(int)
-yaml_parser_fetch_more_tokens(yaml_parser_t *parser);
-
-/*
- * The size of the input raw buffer.
- */
-
-#define INPUT_RAW_BUFFER_SIZE 16384
-
-/*
- * The size of the input buffer.
- *
- * It should be possible to decode the whole raw buffer.
- */
-
-#define INPUT_BUFFER_SIZE (INPUT_RAW_BUFFER_SIZE*3)
-
-/*
- * The size of the output buffer.
- */
-
-#define OUTPUT_BUFFER_SIZE 16384
-
-/*
- * The size of the output raw buffer.
- *
- * It should be possible to encode the whole output buffer.
- */
-
-#define OUTPUT_RAW_BUFFER_SIZE (OUTPUT_BUFFER_SIZE*2+2)
-
-/*
- * The maximum size of a YAML input file.
- * This used to be PTRDIFF_MAX, but that's not entirely portable
- * because stdint.h isn't available on all platforms.
- * It is not entirely clear why this isn't the maximum value
- * that can fit into the parser->offset field.
- */
-
-#define MAX_FILE_SIZE (~(size_t)0 / 2)
-
-
-/*
- * The size of other stacks and queues.
- */
-
-#define INITIAL_STACK_SIZE 16
-#define INITIAL_QUEUE_SIZE 16
-#define INITIAL_STRING_SIZE 16
-
-/*
- * Buffer management.
- */
-
-#define BUFFER_INIT(context,buffer,size) \
- (((buffer).start = (yaml_char_t *)yaml_malloc(size)) ? \
- ((buffer).last = (buffer).pointer = (buffer).start, \
- (buffer).end = (buffer).start+(size), \
- 1) : \
- ((context)->error = YAML_MEMORY_ERROR, \
- 0))
-
-#define BUFFER_DEL(context,buffer) \
- (yaml_free((buffer).start), \
- (buffer).start = (buffer).pointer = (buffer).end = 0)
-
-/*
- * String management.
- */
-
-typedef struct {
- yaml_char_t *start;
- yaml_char_t *end;
- yaml_char_t *pointer;
-} yaml_string_t;
-
-YAML_DECLARE(int)
-yaml_string_extend(yaml_char_t **start,
- yaml_char_t **pointer, yaml_char_t **end);
-
-YAML_DECLARE(int)
-yaml_string_join(
- yaml_char_t **a_start, yaml_char_t **a_pointer, yaml_char_t **a_end,
- yaml_char_t **b_start, yaml_char_t **b_pointer, yaml_char_t **b_end);
-
-#define NULL_STRING { NULL, NULL, NULL }
-
-#define STRING(string,length) { (string), (string)+(length), (string) }
-
-#define STRING_ASSIGN(value,string,length) \
- ((value).start = (string), \
- (value).end = (string)+(length), \
- (value).pointer = (string))
-
-#define STRING_INIT(context,string,size) \
- (((string).start = YAML_MALLOC(size)) ? \
- ((string).pointer = (string).start, \
- (string).end = (string).start+(size), \
- memset((string).start, 0, (size)), \
- 1) : \
- ((context)->error = YAML_MEMORY_ERROR, \
- 0))
-
-#define STRING_DEL(context,string) \
- (yaml_free((string).start), \
- (string).start = (string).pointer = (string).end = 0)
-
-#define STRING_EXTEND(context,string) \
- ((((string).pointer+5 < (string).end) \
- || yaml_string_extend(&(string).start, \
- &(string).pointer, &(string).end)) ? \
- 1 : \
- ((context)->error = YAML_MEMORY_ERROR, \
- 0))
-
-#define CLEAR(context,string) \
- ((string).pointer = (string).start, \
- memset((string).start, 0, (string).end-(string).start))
-
-#define JOIN(context,string_a,string_b) \
- ((yaml_string_join(&(string_a).start, &(string_a).pointer, \
- &(string_a).end, &(string_b).start, \
- &(string_b).pointer, &(string_b).end)) ? \
- ((string_b).pointer = (string_b).start, \
- 1) : \
- ((context)->error = YAML_MEMORY_ERROR, \
- 0))
-
-/*
- * String check operations.
- */
-
-/*
- * Check the octet at the specified position.
- */
-
-#define CHECK_AT(string,octet,offset) \
- ((string).pointer[offset] == (yaml_char_t)(octet))
-
-/*
- * Check the current octet in the buffer.
- */
-
-#define CHECK(string,octet) (CHECK_AT((string),(octet),0))
-
-/*
- * Check if the character at the specified position is an alphabetical
- * character, a digit, '_', or '-'.
- */
-
-#define IS_ALPHA_AT(string,offset) \
- (((string).pointer[offset] >= (yaml_char_t) '0' && \
- (string).pointer[offset] <= (yaml_char_t) '9') || \
- ((string).pointer[offset] >= (yaml_char_t) 'A' && \
- (string).pointer[offset] <= (yaml_char_t) 'Z') || \
- ((string).pointer[offset] >= (yaml_char_t) 'a' && \
- (string).pointer[offset] <= (yaml_char_t) 'z') || \
- (string).pointer[offset] == '_' || \
- (string).pointer[offset] == '-')
-
-#define IS_ALPHA(string) IS_ALPHA_AT((string),0)
-
-/*
- * Check if the character at the specified position is a digit.
- */
-
-#define IS_DIGIT_AT(string,offset) \
- (((string).pointer[offset] >= (yaml_char_t) '0' && \
- (string).pointer[offset] <= (yaml_char_t) '9'))
-
-#define IS_DIGIT(string) IS_DIGIT_AT((string),0)
-
-/*
- * Get the value of a digit.
- */
-
-#define AS_DIGIT_AT(string,offset) \
- ((string).pointer[offset] - (yaml_char_t) '0')
-
-#define AS_DIGIT(string) AS_DIGIT_AT((string),0)
-
-/*
- * Check if the character at the specified position is a hex-digit.
- */
-
-#define IS_HEX_AT(string,offset) \
- (((string).pointer[offset] >= (yaml_char_t) '0' && \
- (string).pointer[offset] <= (yaml_char_t) '9') || \
- ((string).pointer[offset] >= (yaml_char_t) 'A' && \
- (string).pointer[offset] <= (yaml_char_t) 'F') || \
- ((string).pointer[offset] >= (yaml_char_t) 'a' && \
- (string).pointer[offset] <= (yaml_char_t) 'f'))
-
-#define IS_HEX(string) IS_HEX_AT((string),0)
-
-/*
- * Get the value of a hex-digit.
- */
-
-#define AS_HEX_AT(string,offset) \
- (((string).pointer[offset] >= (yaml_char_t) 'A' && \
- (string).pointer[offset] <= (yaml_char_t) 'F') ? \
- ((string).pointer[offset] - (yaml_char_t) 'A' + 10) : \
- ((string).pointer[offset] >= (yaml_char_t) 'a' && \
- (string).pointer[offset] <= (yaml_char_t) 'f') ? \
- ((string).pointer[offset] - (yaml_char_t) 'a' + 10) : \
- ((string).pointer[offset] - (yaml_char_t) '0'))
-
-#define AS_HEX(string) AS_HEX_AT((string),0)
-
-/*
- * Check if the character is ASCII.
- */
-
-#define IS_ASCII_AT(string,offset) \
- ((string).pointer[offset] <= (yaml_char_t) '\x7F')
-
-#define IS_ASCII(string) IS_ASCII_AT((string),0)
-
-/*
- * Check if the character can be printed unescaped.
- */
-
-#define IS_PRINTABLE_AT(string,offset) \
- (((string).pointer[offset] == 0x0A) /* . == #x0A */ \
- || ((string).pointer[offset] >= 0x20 /* #x20 <= . <= #x7E */ \
- && (string).pointer[offset] <= 0x7E) \
- || ((string).pointer[offset] == 0xC2 /* #0xA0 <= . <= #xD7FF */ \
- && (string).pointer[offset+1] >= 0xA0) \
- || ((string).pointer[offset] > 0xC2 \
- && (string).pointer[offset] < 0xED) \
- || ((string).pointer[offset] == 0xED \
- && (string).pointer[offset+1] < 0xA0) \
- || ((string).pointer[offset] == 0xEE) \
- || ((string).pointer[offset] == 0xEF /* #xE000 <= . <= #xFFFD */ \
- && !((string).pointer[offset+1] == 0xBB /* && . != #xFEFF */ \
- && (string).pointer[offset+2] == 0xBF) \
- && !((string).pointer[offset+1] == 0xBF \
- && ((string).pointer[offset+2] == 0xBE \
- || (string).pointer[offset+2] == 0xBF))))
-
-#define IS_PRINTABLE(string) IS_PRINTABLE_AT((string),0)
-
-/*
- * Check if the character at the specified position is NUL.
- */
-
-#define IS_Z_AT(string,offset) CHECK_AT((string),'\0',(offset))
-
-#define IS_Z(string) IS_Z_AT((string),0)
-
-/*
- * Check if the character at the specified position is BOM.
- */
-
-#define IS_BOM_AT(string,offset) \
- (CHECK_AT((string),'\xEF',(offset)) \
- && CHECK_AT((string),'\xBB',(offset)+1) \
- && CHECK_AT((string),'\xBF',(offset)+2)) /* BOM (#xFEFF) */
-
-#define IS_BOM(string) IS_BOM_AT(string,0)
-
-/*
- * Check if the character at the specified position is space.
- */
-
-#define IS_SPACE_AT(string,offset) CHECK_AT((string),' ',(offset))
-
-#define IS_SPACE(string) IS_SPACE_AT((string),0)
-
-/*
- * Check if the character at the specified position is tab.
- */
-
-#define IS_TAB_AT(string,offset) CHECK_AT((string),'\t',(offset))
-
-#define IS_TAB(string) IS_TAB_AT((string),0)
-
-/*
- * Check if the character at the specified position is blank (space or tab).
- */
-
-#define IS_BLANK_AT(string,offset) \
- (IS_SPACE_AT((string),(offset)) || IS_TAB_AT((string),(offset)))
-
-#define IS_BLANK(string) IS_BLANK_AT((string),0)
-
-/*
- * Check if the character at the specified position is a line break.
- */
-
-#define IS_BREAK_AT(string,offset) \
- (CHECK_AT((string),'\r',(offset)) /* CR (#xD)*/ \
- || CHECK_AT((string),'\n',(offset)) /* LF (#xA) */ \
- || (CHECK_AT((string),'\xC2',(offset)) \
- && CHECK_AT((string),'\x85',(offset)+1)) /* NEL (#x85) */ \
- || (CHECK_AT((string),'\xE2',(offset)) \
- && CHECK_AT((string),'\x80',(offset)+1) \
- && CHECK_AT((string),'\xA8',(offset)+2)) /* LS (#x2028) */ \
- || (CHECK_AT((string),'\xE2',(offset)) \
- && CHECK_AT((string),'\x80',(offset)+1) \
- && CHECK_AT((string),'\xA9',(offset)+2))) /* PS (#x2029) */
-
-#define IS_BREAK(string) IS_BREAK_AT((string),0)
-
-#define IS_CRLF_AT(string,offset) \
- (CHECK_AT((string),'\r',(offset)) && CHECK_AT((string),'\n',(offset)+1))
-
-#define IS_CRLF(string) IS_CRLF_AT((string),0)
-
-/*
- * Check if the character is a line break or NUL.
- */
-
-#define IS_BREAKZ_AT(string,offset) \
- (IS_BREAK_AT((string),(offset)) || IS_Z_AT((string),(offset)))
-
-#define IS_BREAKZ(string) IS_BREAKZ_AT((string),0)
-
-/*
- * Check if the character is a line break, space, or NUL.
- */
-
-#define IS_SPACEZ_AT(string,offset) \
- (IS_SPACE_AT((string),(offset)) || IS_BREAKZ_AT((string),(offset)))
-
-#define IS_SPACEZ(string) IS_SPACEZ_AT((string),0)
-
-/*
- * Check if the character is a line break, space, tab, or NUL.
- */
-
-#define IS_BLANKZ_AT(string,offset) \
- (IS_BLANK_AT((string),(offset)) || IS_BREAKZ_AT((string),(offset)))
-
-#define IS_BLANKZ(string) IS_BLANKZ_AT((string),0)
-
-/*
- * Determine the width of the character.
- */
-
-#define WIDTH_AT(string,offset) \
- (((string).pointer[offset] & 0x80) == 0x00 ? 1 : \
- ((string).pointer[offset] & 0xE0) == 0xC0 ? 2 : \
- ((string).pointer[offset] & 0xF0) == 0xE0 ? 3 : \
- ((string).pointer[offset] & 0xF8) == 0xF0 ? 4 : 0)
-
-#define WIDTH(string) WIDTH_AT((string),0)
-
-/*
- * Move the string pointer to the next character.
- */
-
-#define MOVE(string) ((string).pointer += WIDTH((string)))
-
-/*
- * Copy a character and move the pointers of both strings.
- */
-
-#define COPY(string_a,string_b) \
- ((*(string_b).pointer & 0x80) == 0x00 ? \
- (*((string_a).pointer++) = *((string_b).pointer++)) : \
- (*(string_b).pointer & 0xE0) == 0xC0 ? \
- (*((string_a).pointer++) = *((string_b).pointer++), \
- *((string_a).pointer++) = *((string_b).pointer++)) : \
- (*(string_b).pointer & 0xF0) == 0xE0 ? \
- (*((string_a).pointer++) = *((string_b).pointer++), \
- *((string_a).pointer++) = *((string_b).pointer++), \
- *((string_a).pointer++) = *((string_b).pointer++)) : \
- (*(string_b).pointer & 0xF8) == 0xF0 ? \
- (*((string_a).pointer++) = *((string_b).pointer++), \
- *((string_a).pointer++) = *((string_b).pointer++), \
- *((string_a).pointer++) = *((string_b).pointer++), \
- *((string_a).pointer++) = *((string_b).pointer++)) : 0)
-
-/*
- * Stack and queue management.
- */
-
-YAML_DECLARE(int)
-yaml_stack_extend(void **start, void **top, void **end);
-
-YAML_DECLARE(int)
-yaml_queue_extend(void **start, void **head, void **tail, void **end);
-
-#define STACK_INIT(context,stack,type) \
- (((stack).start = (type)yaml_malloc(INITIAL_STACK_SIZE*sizeof(*(stack).start))) ? \
- ((stack).top = (stack).start, \
- (stack).end = (stack).start+INITIAL_STACK_SIZE, \
- 1) : \
- ((context)->error = YAML_MEMORY_ERROR, \
- 0))
-
-#define STACK_DEL(context,stack) \
- (yaml_free((stack).start), \
- (stack).start = (stack).top = (stack).end = 0)
-
-#define STACK_EMPTY(context,stack) \
- ((stack).start == (stack).top)
-
-#define STACK_LIMIT(context,stack,size) \
- ((stack).top - (stack).start < (size) ? \
- 1 : \
- ((context)->error = YAML_MEMORY_ERROR, \
- 0))
-
-#define PUSH(context,stack,value) \
- (((stack).top != (stack).end \
- || yaml_stack_extend((void **)&(stack).start, \
- (void **)&(stack).top, (void **)&(stack).end)) ? \
- (*((stack).top++) = value, \
- 1) : \
- ((context)->error = YAML_MEMORY_ERROR, \
- 0))
-
-#define POP(context,stack) \
- (*(--(stack).top))
-
-#define QUEUE_INIT(context,queue,size,type) \
- (((queue).start = (type)yaml_malloc((size)*sizeof(*(queue).start))) ? \
- ((queue).head = (queue).tail = (queue).start, \
- (queue).end = (queue).start+(size), \
- 1) : \
- ((context)->error = YAML_MEMORY_ERROR, \
- 0))
-
-#define QUEUE_DEL(context,queue) \
- (yaml_free((queue).start), \
- (queue).start = (queue).head = (queue).tail = (queue).end = 0)
-
-#define QUEUE_EMPTY(context,queue) \
- ((queue).head == (queue).tail)
-
-#define ENQUEUE(context,queue,value) \
- (((queue).tail != (queue).end \
- || yaml_queue_extend((void **)&(queue).start, (void **)&(queue).head, \
- (void **)&(queue).tail, (void **)&(queue).end)) ? \
- (*((queue).tail++) = value, \
- 1) : \
- ((context)->error = YAML_MEMORY_ERROR, \
- 0))
-
-#define DEQUEUE(context,queue) \
- (*((queue).head++))
-
-#define QUEUE_INSERT(context,queue,index,value) \
- (((queue).tail != (queue).end \
- || yaml_queue_extend((void **)&(queue).start, (void **)&(queue).head, \
- (void **)&(queue).tail, (void **)&(queue).end)) ? \
- (memmove((queue).head+(index)+1,(queue).head+(index), \
- ((queue).tail-(queue).head-(index))*sizeof(*(queue).start)), \
- *((queue).head+(index)) = value, \
- (queue).tail++, \
- 1) : \
- ((context)->error = YAML_MEMORY_ERROR, \
- 0))
-
-/*
- * Token initializers.
- */
-
-#define TOKEN_INIT(token,token_type,token_start_mark,token_end_mark) \
- (memset(&(token), 0, sizeof(yaml_token_t)), \
- (token).type = (token_type), \
- (token).start_mark = (token_start_mark), \
- (token).end_mark = (token_end_mark))
-
-#define STREAM_START_TOKEN_INIT(token,token_encoding,start_mark,end_mark) \
- (TOKEN_INIT((token),YAML_STREAM_START_TOKEN,(start_mark),(end_mark)), \
- (token).data.stream_start.encoding = (token_encoding))
-
-#define STREAM_END_TOKEN_INIT(token,start_mark,end_mark) \
- (TOKEN_INIT((token),YAML_STREAM_END_TOKEN,(start_mark),(end_mark)))
-
-#define ALIAS_TOKEN_INIT(token,token_value,start_mark,end_mark) \
- (TOKEN_INIT((token),YAML_ALIAS_TOKEN,(start_mark),(end_mark)), \
- (token).data.alias.value = (token_value))
-
-#define ANCHOR_TOKEN_INIT(token,token_value,start_mark,end_mark) \
- (TOKEN_INIT((token),YAML_ANCHOR_TOKEN,(start_mark),(end_mark)), \
- (token).data.anchor.value = (token_value))
-
-#define TAG_TOKEN_INIT(token,token_handle,token_suffix,start_mark,end_mark) \
- (TOKEN_INIT((token),YAML_TAG_TOKEN,(start_mark),(end_mark)), \
- (token).data.tag.handle = (token_handle), \
- (token).data.tag.suffix = (token_suffix))
-
-#define SCALAR_TOKEN_INIT(token,token_value,token_length,token_style,start_mark,end_mark) \
- (TOKEN_INIT((token),YAML_SCALAR_TOKEN,(start_mark),(end_mark)), \
- (token).data.scalar.value = (token_value), \
- (token).data.scalar.length = (token_length), \
- (token).data.scalar.style = (token_style))
-
-#define VERSION_DIRECTIVE_TOKEN_INIT(token,token_major,token_minor,start_mark,end_mark) \
- (TOKEN_INIT((token),YAML_VERSION_DIRECTIVE_TOKEN,(start_mark),(end_mark)), \
- (token).data.version_directive.major = (token_major), \
- (token).data.version_directive.minor = (token_minor))
-
-#define TAG_DIRECTIVE_TOKEN_INIT(token,token_handle,token_prefix,start_mark,end_mark) \
- (TOKEN_INIT((token),YAML_TAG_DIRECTIVE_TOKEN,(start_mark),(end_mark)), \
- (token).data.tag_directive.handle = (token_handle), \
- (token).data.tag_directive.prefix = (token_prefix))
-
-/*
- * Event initializers.
- */
-
-#define EVENT_INIT(event,event_type,event_start_mark,event_end_mark) \
- (memset(&(event), 0, sizeof(yaml_event_t)), \
- (event).type = (event_type), \
- (event).start_mark = (event_start_mark), \
- (event).end_mark = (event_end_mark))
-
-#define STREAM_START_EVENT_INIT(event,event_encoding,start_mark,end_mark) \
- (EVENT_INIT((event),YAML_STREAM_START_EVENT,(start_mark),(end_mark)), \
- (event).data.stream_start.encoding = (event_encoding))
-
-#define STREAM_END_EVENT_INIT(event,start_mark,end_mark) \
- (EVENT_INIT((event),YAML_STREAM_END_EVENT,(start_mark),(end_mark)))
-
-#define DOCUMENT_START_EVENT_INIT(event,event_version_directive, \
- event_tag_directives_start,event_tag_directives_end,event_implicit,start_mark,end_mark) \
- (EVENT_INIT((event),YAML_DOCUMENT_START_EVENT,(start_mark),(end_mark)), \
- (event).data.document_start.version_directive = (event_version_directive), \
- (event).data.document_start.tag_directives.start = (event_tag_directives_start), \
- (event).data.document_start.tag_directives.end = (event_tag_directives_end), \
- (event).data.document_start.implicit = (event_implicit))
-
-#define DOCUMENT_END_EVENT_INIT(event,event_implicit,start_mark,end_mark) \
- (EVENT_INIT((event),YAML_DOCUMENT_END_EVENT,(start_mark),(end_mark)), \
- (event).data.document_end.implicit = (event_implicit))
-
-#define ALIAS_EVENT_INIT(event,event_anchor,start_mark,end_mark) \
- (EVENT_INIT((event),YAML_ALIAS_EVENT,(start_mark),(end_mark)), \
- (event).data.alias.anchor = (event_anchor))
-
-#define SCALAR_EVENT_INIT(event,event_anchor,event_tag,event_value,event_length, \
- event_plain_implicit, event_quoted_implicit,event_style,start_mark,end_mark) \
- (EVENT_INIT((event),YAML_SCALAR_EVENT,(start_mark),(end_mark)), \
- (event).data.scalar.anchor = (event_anchor), \
- (event).data.scalar.tag = (event_tag), \
- (event).data.scalar.value = (event_value), \
- (event).data.scalar.length = (event_length), \
- (event).data.scalar.plain_implicit = (event_plain_implicit), \
- (event).data.scalar.quoted_implicit = (event_quoted_implicit), \
- (event).data.scalar.style = (event_style))
-
-#define SEQUENCE_START_EVENT_INIT(event,event_anchor,event_tag, \
- event_implicit,event_style,start_mark,end_mark) \
- (EVENT_INIT((event),YAML_SEQUENCE_START_EVENT,(start_mark),(end_mark)), \
- (event).data.sequence_start.anchor = (event_anchor), \
- (event).data.sequence_start.tag = (event_tag), \
- (event).data.sequence_start.implicit = (event_implicit), \
- (event).data.sequence_start.style = (event_style))
-
-#define SEQUENCE_END_EVENT_INIT(event,start_mark,end_mark) \
- (EVENT_INIT((event),YAML_SEQUENCE_END_EVENT,(start_mark),(end_mark)))
-
-#define MAPPING_START_EVENT_INIT(event,event_anchor,event_tag, \
- event_implicit,event_style,start_mark,end_mark) \
- (EVENT_INIT((event),YAML_MAPPING_START_EVENT,(start_mark),(end_mark)), \
- (event).data.mapping_start.anchor = (event_anchor), \
- (event).data.mapping_start.tag = (event_tag), \
- (event).data.mapping_start.implicit = (event_implicit), \
- (event).data.mapping_start.style = (event_style))
-
-#define MAPPING_END_EVENT_INIT(event,start_mark,end_mark) \
- (EVENT_INIT((event),YAML_MAPPING_END_EVENT,(start_mark),(end_mark)))
-
-/*
- * Document initializer.
- */
-
-#define DOCUMENT_INIT(document,document_nodes_start,document_nodes_end, \
- document_version_directive,document_tag_directives_start, \
- document_tag_directives_end,document_start_implicit, \
- document_end_implicit,document_start_mark,document_end_mark) \
- (memset(&(document), 0, sizeof(yaml_document_t)), \
- (document).nodes.start = (document_nodes_start), \
- (document).nodes.end = (document_nodes_end), \
- (document).nodes.top = (document_nodes_start), \
- (document).version_directive = (document_version_directive), \
- (document).tag_directives.start = (document_tag_directives_start), \
- (document).tag_directives.end = (document_tag_directives_end), \
- (document).start_implicit = (document_start_implicit), \
- (document).end_implicit = (document_end_implicit), \
- (document).start_mark = (document_start_mark), \
- (document).end_mark = (document_end_mark))
-
-/*
- * Node initializers.
- */
-
-#define NODE_INIT(node,node_type,node_tag,node_start_mark,node_end_mark) \
- (memset(&(node), 0, sizeof(yaml_node_t)), \
- (node).type = (node_type), \
- (node).tag = (node_tag), \
- (node).start_mark = (node_start_mark), \
- (node).end_mark = (node_end_mark))
-
-#define SCALAR_NODE_INIT(node,node_tag,node_value,node_length, \
- node_style,start_mark,end_mark) \
- (NODE_INIT((node),YAML_SCALAR_NODE,(node_tag),(start_mark),(end_mark)), \
- (node).data.scalar.value = (node_value), \
- (node).data.scalar.length = (node_length), \
- (node).data.scalar.style = (node_style))
-
-#define SEQUENCE_NODE_INIT(node,node_tag,node_items_start,node_items_end, \
- node_style,start_mark,end_mark) \
- (NODE_INIT((node),YAML_SEQUENCE_NODE,(node_tag),(start_mark),(end_mark)), \
- (node).data.sequence.items.start = (node_items_start), \
- (node).data.sequence.items.end = (node_items_end), \
- (node).data.sequence.items.top = (node_items_start), \
- (node).data.sequence.style = (node_style))
-
-#define MAPPING_NODE_INIT(node,node_tag,node_pairs_start,node_pairs_end, \
- node_style,start_mark,end_mark) \
- (NODE_INIT((node),YAML_MAPPING_NODE,(node_tag),(start_mark),(end_mark)), \
- (node).data.mapping.pairs.start = (node_pairs_start), \
- (node).data.mapping.pairs.end = (node_pairs_end), \
- (node).data.mapping.pairs.top = (node_pairs_start), \
- (node).data.mapping.style = (node_style))
-
-/* Strict C compiler warning helpers */
-
-#if defined(__clang__) || defined(__GNUC__)
-# define HASATTRIBUTE_UNUSED
-#endif
-#ifdef HASATTRIBUTE_UNUSED
-# define __attribute__unused__ __attribute__((__unused__))
-#else
-# define __attribute__unused__
-#endif
-
-/* Shim arguments are arguments that must be included in your function,
- * but serve no purpose inside. Silence compiler warnings. */
-#define SHIM(a) /*@unused@*/ a __attribute__unused__
-
-/* UNUSED_PARAM() marks a shim argument in the body to silence compiler warnings */
-#ifdef __clang__
-# define UNUSED_PARAM(a) (void)(a);
-#else
-# define UNUSED_PARAM(a) /*@-noeffect*/if (0) (void)(a)/*@=noeffect*/;
-#endif
-
-#define YAML_MALLOC_STATIC(type) (type*)yaml_malloc(sizeof(type))
-#define YAML_MALLOC(size) (yaml_char_t *)yaml_malloc(size)