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Diffstat (limited to 'trunk/ext/ripper/lib/ripper/filter.rb')
| -rw-r--r-- | trunk/ext/ripper/lib/ripper/filter.rb | 70 |
1 files changed, 0 insertions, 70 deletions
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 |