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-rw-r--r--ext/json/lib/json/common.rb123
1 files changed, 83 insertions, 40 deletions
diff --git a/ext/json/lib/json/common.rb b/ext/json/lib/json/common.rb
index b816a66cf1b..244634b7a1d 100644
--- a/ext/json/lib/json/common.rb
+++ b/ext/json/lib/json/common.rb
@@ -1,4 +1,5 @@
require 'json/version'
+require 'iconv'
module JSON
class << self
@@ -32,12 +33,16 @@ module JSON
# level (absolute namespace path?). If there doesn't exist a constant at
# the given path, an ArgumentError is raised.
def deep_const_get(path) # :nodoc:
- path = path.to_s
- path.split(/::/).inject(Object) do |p, c|
+ path.to_s.split(/::/).inject(Object) do |p, c|
case
when c.empty? then p
when p.const_defined?(c) then p.const_get(c)
- else raise ArgumentError, "can't find const #{path}"
+ else
+ begin
+ p.const_missing(c)
+ rescue NameError
+ raise ArgumentError, "can't find const #{path}"
+ end
end
end
end
@@ -58,6 +63,20 @@ module JSON
end
self.state = generator::State
const_set :State, self.state
+ const_set :SAFE_STATE_PROTOTYPE, State.new.freeze
+ const_set :FAST_STATE_PROTOTYPE, State.new(
+ :indent => '',
+ :space => '',
+ :object_nl => "",
+ :array_nl => "",
+ :max_nesting => false
+ ).freeze
+ const_set :PRETTY_STATE_PROTOTYPE, State.new(
+ :indent => ' ',
+ :space => ' ',
+ :object_nl => "\n",
+ :array_nl => "\n"
+ ).freeze
end
# Returns the JSON generator modul, that is used by JSON. This might be
@@ -90,22 +109,22 @@ module JSON
# deep.
class NestingError < ParserError; end
+ # :stopdoc:
+ class CircularDatastructure < NestingError; end
+ # :startdoc:
+
# This exception is raised, if a generator or unparser error occurs.
class GeneratorError < JSONError; end
# For backwards compatibility
UnparserError = GeneratorError
- # If a circular data structure is encountered while unparsing
- # this exception is raised.
- class CircularDatastructure < GeneratorError; end
-
# This exception is raised, if the required unicode support is missing on the
# system. Usually this means, that the iconv library is not installed.
class MissingUnicodeSupport < JSONError; end
module_function
- # Parse the JSON string _source_ into a Ruby data structure and return it.
+ # Parse the JSON document _source_ into a Ruby data structure and return it.
#
# _opts_ can have the following
# keys:
@@ -115,16 +134,21 @@ module JSON
# * *allow_nan*: If set to true, allow NaN, Infinity and -Infinity in
# defiance of RFC 4627 to be parsed by the Parser. This option defaults
# to false.
+ # * *symbolize_names*: If set to true, returns symbols for the names
+ # (keys) in a JSON object. Otherwise strings are returned, which is also
+ # the default.
# * *create_additions*: If set to false, the Parser doesn't create
# additions even if a matchin class and create_id was found. This option
# defaults to true.
+ # * *object_class*: Defaults to Hash
+ # * *array_class*: Defaults to Array
def parse(source, opts = {})
- JSON.parser.new(source, opts).parse
+ Parser.new(source, opts).parse
end
- # Parse the JSON string _source_ into a Ruby data structure and return it.
+ # Parse the JSON document _source_ into a Ruby data structure and return it.
# The bang version of the parse method, defaults to the more dangerous values
- # for the _opts_ hash, so be sure only to parse trusted _source_ strings.
+ # for the _opts_ hash, so be sure only to parse trusted _source_ documents.
#
# _opts_ can have the following keys:
# * *max_nesting*: The maximum depth of nesting allowed in the parsed data
@@ -139,15 +163,14 @@ module JSON
# defaults to true.
def parse!(source, opts = {})
opts = {
- :max_nesting => false,
- :allow_nan => true
+ :max_nesting => false,
+ :allow_nan => true
}.update(opts)
- JSON.parser.new(source, opts).parse
+ Parser.new(source, opts).parse
end
- # Unparse the Ruby data structure _obj_ into a single line JSON string and
- # return it. _state_ is
- # * a JSON::State object,
+ # Generate a JSON document from the Ruby data structure _obj_ and return
+ # it. _state_ is * a JSON::State object,
# * or a Hash like object (responding to to_hash),
# * an object convertible into a hash by a to_h method,
# that is used as or to configure a State object.
@@ -160,10 +183,8 @@ module JSON
# * *indent*: a string used to indent levels (default: ''),
# * *space*: a string that is put after, a : or , delimiter (default: ''),
# * *space_before*: a string that is put before a : pair delimiter (default: ''),
- # * *object_nl*: a string that is put at the end of a JSON object (default: ''),
+ # * *object_nl*: a string that is put at the end of a JSON object (default: ''),
# * *array_nl*: a string that is put at the end of a JSON array (default: ''),
- # * *check_circular*: true if checking for circular data structures
- # should be done (the default), false otherwise.
# * *allow_nan*: true if NaN, Infinity, and -Infinity should be
# generated, otherwise an exception is thrown, if these values are
# encountered. This options defaults to false.
@@ -174,13 +195,21 @@ module JSON
# See also the fast_generate for the fastest creation method with the least
# amount of sanity checks, and the pretty_generate method for some
# defaults for a pretty output.
- def generate(obj, state = nil)
- if state
- state = State.from_state(state)
+ def generate(obj, opts = nil)
+ if opts
+ if opts.respond_to? :to_hash
+ opts = opts.to_hash
+ elsif opts.respond_to? :to_h
+ opts = opts.to_h
+ else
+ raise TypeError, "can't convert #{opts.class} into Hash"
+ end
+ state = SAFE_STATE_PROTOTYPE.dup
+ state = state.configure(opts)
else
- state = State.new
+ state = SAFE_STATE_PROTOTYPE
end
- obj.to_json(state)
+ state.generate(obj)
end
# :stopdoc:
@@ -190,14 +219,26 @@ module JSON
module_function :unparse
# :startdoc:
- # Unparse the Ruby data structure _obj_ into a single line JSON string and
- # return it. This method disables the checks for circles in Ruby objects, and
- # also generates NaN, Infinity, and, -Infinity float values.
+ # Generate a JSON document from the Ruby data structure _obj_ and return it.
+ # This method disables the checks for circles in Ruby objects.
#
# *WARNING*: Be careful not to pass any Ruby data structures with circles as
# _obj_ argument, because this will cause JSON to go into an infinite loop.
- def fast_generate(obj)
- obj.to_json(nil)
+ def fast_generate(obj, opts = nil)
+ if opts
+ if opts.respond_to? :to_hash
+ opts = opts.to_hash
+ elsif opts.respond_to? :to_h
+ opts = opts.to_h
+ else
+ raise TypeError, "can't convert #{opts.class} into Hash"
+ end
+ state = FAST_STATE_PROTOTYPE.dup
+ state.configure(opts)
+ else
+ state = FAST_STATE_PROTOTYPE
+ end
+ state.generate(obj)
end
# :stopdoc:
@@ -206,19 +247,13 @@ module JSON
module_function :fast_unparse
# :startdoc:
- # Unparse the Ruby data structure _obj_ into a JSON string and return it. The
- # returned string is a prettier form of the string returned by #unparse.
+ # Generate a JSON document from the Ruby data structure _obj_ and return it.
+ # The returned document is a prettier form of the document returned by
+ # #unparse.
#
# The _opts_ argument can be used to configure the generator, see the
# generate method for a more detailed explanation.
def pretty_generate(obj, opts = nil)
- state = JSON.state.new(
- :indent => ' ',
- :space => ' ',
- :object_nl => "\n",
- :array_nl => "\n",
- :check_circular => true
- )
if opts
if opts.respond_to? :to_hash
opts = opts.to_hash
@@ -227,9 +262,12 @@ module JSON
else
raise TypeError, "can't convert #{opts.class} into Hash"
end
+ state = PRETTY_STATE_PROTOTYPE.dup
state.configure(opts)
+ else
+ state = PRETTY_STATE_PROTOTYPE
end
- obj.to_json(state)
+ state.generate(obj)
end
# :stopdoc:
@@ -305,6 +343,11 @@ module JSON
rescue JSON::NestingError
raise ArgumentError, "exceed depth limit"
end
+
+ # Shortuct for iconv.
+ def self.iconv(to, from, string)
+ Iconv.iconv(to, from, string).first
+ end
end
module ::Kernel