diff options
Diffstat (limited to 'trunk/ext/ripper/lib/ripper')
| -rw-r--r-- | trunk/ext/ripper/lib/ripper/core.rb | 70 | ||||
| -rw-r--r-- | trunk/ext/ripper/lib/ripper/filter.rb | 70 | ||||
| -rw-r--r-- | trunk/ext/ripper/lib/ripper/lexer.rb | 179 | ||||
| -rw-r--r-- | trunk/ext/ripper/lib/ripper/sexp.rb | 99 |
4 files changed, 0 insertions, 418 deletions
diff --git a/trunk/ext/ripper/lib/ripper/core.rb b/trunk/ext/ripper/lib/ripper/core.rb deleted file mode 100644 index 35aa54d090..0000000000 --- a/trunk/ext/ripper/lib/ripper/core.rb +++ /dev/null @@ -1,70 +0,0 @@ -# -# $Id$ -# -# Copyright (c) 2003-2005 Minero Aoki -# -# This program is free software. -# You can distribute and/or modify this program under the Ruby License. -# For details of Ruby License, see ruby/COPYING. -# - -require 'ripper.so' - -class Ripper - - # Parses Ruby program read from _src_. - # _src_ must be a String or a IO or a object which has #gets method. - def Ripper.parse(src, filename = '(ripper)', lineno = 1) - new(src, filename, lineno).parse - end - - # This array contains name of parser events. - PARSER_EVENTS = PARSER_EVENT_TABLE.keys - - # This array contains name of scanner events. - SCANNER_EVENTS = SCANNER_EVENT_TABLE.keys - - # This array contains name of all ripper events. - EVENTS = PARSER_EVENTS + SCANNER_EVENTS - - private - - # - # Parser Events - # - - PARSER_EVENT_TABLE.each do |id, arity| - module_eval(<<-End, __FILE__, __LINE__ + 1) - def on_#{id}(#{ ('a'..'z').to_a[0, arity].join(', ') }) - #{arity == 0 ? 'nil' : 'a'} - end - End - end - - # This method is called when weak warning is produced by the parser. - # _fmt_ and _args_ is printf style. - def warn(fmt, *args) - end - - # This method is called when strong warning is produced by the parser. - # _fmt_ and _args_ is printf style. - def warning(fmt, *args) - end - - # This method is called when the parser found syntax error. - def compile_error(msg) - end - - # - # Scanner Events - # - - SCANNER_EVENTS.each do |id| - module_eval(<<-End, __FILE__, __LINE__ + 1) - def on_#{id}(token) - token - end - End - end - -end diff --git a/trunk/ext/ripper/lib/ripper/filter.rb b/trunk/ext/ripper/lib/ripper/filter.rb deleted file mode 100644 index 898501b23c..0000000000 --- a/trunk/ext/ripper/lib/ripper/filter.rb +++ /dev/null @@ -1,70 +0,0 @@ -# -# $Id$ -# -# Copyright (c) 2004,2005 Minero Aoki -# -# This program is free software. -# You can distribute and/or modify this program under the Ruby License. -# For details of Ruby License, see ruby/COPYING. -# - -require 'ripper/lexer' - -class Ripper - - # This class handles only scanner events, - # and they are dispatched in the `right' order (same with input). - class Filter - - def initialize(src, filename = '-', lineno = 1) - @__lexer = Lexer.new(src, filename, lineno) - @__line = nil - @__col = nil - end - - # The file name of the input. - def filename - @__lexer.filename - end - - # The line number of the current token. - # This value starts from 1. - # This method is valid only in event handlers. - def lineno - @__line - end - - # The column number of the current token. - # This value starts from 0. - # This method is valid only in event handlers. - def column - @__col - end - - # Starts parsing. _init_ is a data accumulator. - # It is passed to the next event handler (as of Enumerable#inject). - def parse(init = nil) - data = init - @__lexer.lex.each do |pos, event, tok| - @__line, @__col = *pos - data = if respond_to?(event, true) - then __send__(event, tok, data) - else on_default(event, tok, data) - end - end - data - end - - private - - # This method is called when some event handler have not defined. - # _event_ is :on_XXX, _token_ is scanned token, _data_ is a data - # accumulator. The return value of this method is passed to the - # next event handler (as of Enumerable#inject). - def on_default(event, token, data) - data - end - - end - -end diff --git a/trunk/ext/ripper/lib/ripper/lexer.rb b/trunk/ext/ripper/lib/ripper/lexer.rb deleted file mode 100644 index 14ef99f034..0000000000 --- a/trunk/ext/ripper/lib/ripper/lexer.rb +++ /dev/null @@ -1,179 +0,0 @@ -# -# $Id$ -# -# Copyright (c) 2004,2005 Minero Aoki -# -# This program is free software. -# You can distribute and/or modify this program under the Ruby License. -# For details of Ruby License, see ruby/COPYING. -# - -require 'ripper/core' - -class Ripper - - # Tokenizes Ruby program and returns an Array of String. - def Ripper.tokenize(src, filename = '-', lineno = 1) - Lexer.new(src, filename, lineno).tokenize - end - - # Tokenizes Ruby program and returns an Array of Array, - # which is formatted like [[lineno, column], type, token]. - # - # require 'ripper' - # require 'pp' - # - # p Ripper.lex("def m(a) nil end") - # #=> [[[1, 0], :on_kw, "def"], - # [[1, 3], :on_sp, " " ], - # [[1, 4], :on_ident, "m" ], - # [[1, 5], :on_lparen, "(" ], - # [[1, 6], :on_ident, "a" ], - # [[1, 7], :on_rparen, ")" ], - # [[1, 8], :on_sp, " " ], - # [[1, 9], :on_kw, "nil"], - # [[1, 12], :on_sp, " " ], - # [[1, 13], :on_kw, "end"]] - # - def Ripper.lex(src, filename = '-', lineno = 1) - Lexer.new(src, filename, lineno).lex - end - - class Lexer < ::Ripper #:nodoc: internal use only - def tokenize - lex().map {|pos, event, tok| tok } - end - - def lex - parse().sort_by {|pos, event, tok| pos } - end - - def parse - @buf = [] - super - @buf - end - - private - - SCANNER_EVENTS.each do |event| - module_eval(<<-End, __FILE__+'/module_eval', __LINE__ + 1) - def on_#{event}(tok) - @buf.push [[lineno(), column()], :on_#{event}, tok] - end - End - end - end - - # [EXPERIMENTAL] - # Parses +src+ and return a string which was matched to +pattern+. - # +pattern+ should be described as Regexp. - # - # require 'ripper' - # - # p Ripper.slice('def m(a) nil end', 'ident') #=> "m" - # p Ripper.slice('def m(a) nil end', '[ident lparen rparen]+') #=> "m(a)" - # p Ripper.slice("<<EOS\nstring\nEOS", - # 'heredoc_beg nl $(tstring_content*) heredoc_end', 1) - # #=> "string\n" - # - def Ripper.slice(src, pattern, n = 0) - if m = token_match(src, pattern) - then m.string(n) - else nil - end - end - - def Ripper.token_match(src, pattern) #:nodoc: - TokenPattern.compile(pattern).match(src) - end - - class TokenPattern #:nodoc: - - class Error < ::StandardError; end - class CompileError < Error; end - class MatchError < Error; end - - class << self - alias compile new - end - - def initialize(pattern) - @source = pattern - @re = compile(pattern) - end - - def match(str) - match_list(::Ripper.lex(str)) - end - - def match_list(tokens) - if m = @re.match(map_tokens(tokens)) - then MatchData.new(tokens, m) - else nil - end - end - - private - - def compile(pattern) - if m = /[^\w\s$()\[\]{}?*+\.]/.match(pattern) - raise CompileError, "invalid char in pattern: #{m[0].inspect}" - end - buf = '' - pattern.scan(/(?:\w+|\$\(|[()\[\]\{\}?*+\.]+)/) do |tok| - case tok - when /\w/ - buf.concat map_token(tok) - when '$(' - buf.concat '(' - when '(' - buf.concat '(?:' - when /[?*\[\])\.]/ - buf.concat tok - else - raise 'must not happen' - end - end - Regexp.compile(buf) - rescue RegexpError => err - raise CompileError, err.message - end - - def map_tokens(tokens) - tokens.map {|pos,type,str| map_token(type.to_s.sub(/\Aon_/,'')) }.join - end - - MAP = {} - seed = ('a'..'z').to_a + ('A'..'Z').to_a + ('0'..'9').to_a - SCANNER_EVENT_TABLE.each do |ev, | - raise CompileError, "[RIPPER FATAL] too many system token" if seed.empty? - MAP[ev.to_s.sub(/\Aon_/,'')] = seed.shift - end - - def map_token(tok) - MAP[tok] or raise CompileError, "unknown token: #{tok}" - end - - class MatchData - def initialize(tokens, match) - @tokens = tokens - @match = match - end - - def string(n = 0) - return nil unless @match - match(n).join - end - - private - - def match(n = 0) - return [] unless @match - @tokens[@match.begin(n)...@match.end(n)].map {|pos,type,str| str } - end - end - - end - -end diff --git a/trunk/ext/ripper/lib/ripper/sexp.rb b/trunk/ext/ripper/lib/ripper/sexp.rb deleted file mode 100644 index f2260fe8dd..0000000000 --- a/trunk/ext/ripper/lib/ripper/sexp.rb +++ /dev/null @@ -1,99 +0,0 @@ -# -# $Id$ -# -# Copyright (c) 2004,2005 Minero Aoki -# -# This program is free software. -# You can distribute and/or modify this program under the Ruby License. -# For details of Ruby License, see ruby/COPYING. -# - -require 'ripper/core' - -class Ripper - - # [EXPERIMENTAL] - # Parses +src+ and create S-exp tree. - # This method is for mainly developper use. - # - # require 'ripper' - # require 'pp - # - # pp Ripper.sexp("def m(a) nil end") - # #=> [:program, - # [:stmts_add, - # [:stmts_new], - # [:def, - # [:@ident, "m", [1, 4]], - # [:paren, [:params, [[:@ident, "a", [1, 6]]], nil, nil, nil]], - # [:bodystmt, - # [:stmts_add, [:stmts_new], [:var_ref, [:@kw, "nil", [1, 9]]]], - # nil, - # nil, - # nil]]]] - # - def Ripper.sexp(src, filename = '-', lineno = 1) - SexpBuilderPP.new(src, filename, lineno).parse - end - - def Ripper.sexp_raw(src, filename = '-', lineno = 1) - SexpBuilder.new(src, filename, lineno).parse - end - - class SexpBuilderPP < ::Ripper #:nodoc: - private - - PARSER_EVENT_TABLE.each do |event, arity| - if /_new\z/ =~ event.to_s and arity == 0 - module_eval(<<-End, __FILE__, __LINE__ + 1) - def on_#{event} - [] - end - End - elsif /_add\z/ =~ event.to_s - module_eval(<<-End, __FILE__, __LINE__ + 1) - def on_#{event}(list, item) - list.push item - list - end - End - else - module_eval(<<-End, __FILE__, __LINE__ + 1) - def on_#{event}(*args) - [:#{event}, *args] - end - End - end - end - - SCANNER_EVENTS.each do |event| - module_eval(<<-End, __FILE__, __LINE__ + 1) - def on_#{event}(tok) - [:@#{event}, tok, [lineno(), column()]] - end - End - end - end - - class SexpBuilder < ::Ripper #:nodoc: - private - - PARSER_EVENTS.each do |event| - module_eval(<<-End, __FILE__, __LINE__ + 1) - def on_#{event}(*args) - args.unshift :#{event} - args - end - End - end - - SCANNER_EVENTS.each do |event| - module_eval(<<-End, __FILE__, __LINE__ + 1) - def on_#{event}(tok) - [:@#{event}, tok, [lineno(), column()]] - end - End - end - end - -end |