diff options
Diffstat (limited to 'actionpack/lib/action_dispatch/vendor/rack-mount-0.6.6.pre/rack/mount/strexp/tokenizer.rb')
-rw-r--r-- | actionpack/lib/action_dispatch/vendor/rack-mount-0.6.6.pre/rack/mount/strexp/tokenizer.rb | 83 |
1 files changed, 83 insertions, 0 deletions
diff --git a/actionpack/lib/action_dispatch/vendor/rack-mount-0.6.6.pre/rack/mount/strexp/tokenizer.rb b/actionpack/lib/action_dispatch/vendor/rack-mount-0.6.6.pre/rack/mount/strexp/tokenizer.rb new file mode 100644 index 0000000000..0ff7f67661 --- /dev/null +++ b/actionpack/lib/action_dispatch/vendor/rack-mount-0.6.6.pre/rack/mount/strexp/tokenizer.rb @@ -0,0 +1,83 @@ +#-- +# DO NOT MODIFY!!!! +# This file is automatically generated by rex 1.0.5.beta1 +# from lexical definition file "lib/rack/mount/strexp/tokenizer.rex". +#++ + +require 'racc/parser' +class Rack::Mount::StrexpParser < Racc::Parser + require 'strscan' + + class ScanError < StandardError ; end + + attr_reader :lineno + attr_reader :filename + attr_accessor :state + + def scan_setup(str) + @ss = StringScanner.new(str) + @lineno = 1 + @state = nil + end + + def action + yield + end + + def scan_str(str) + scan_setup(str) + do_parse + end + alias :scan :scan_str + + def load_file( filename ) + @filename = filename + open(filename, "r") do |f| + scan_setup(f.read) + end + end + + def scan_file( filename ) + load_file(filename) + do_parse + end + + + def next_token + return if @ss.eos? + + text = @ss.peek(1) + @lineno += 1 if text == "\n" + token = case @state + when nil + case + when (text = @ss.scan(/\\(\(|\)|:|\*)/)) + action { [:CHAR, @ss[1]] } + + when (text = @ss.scan(/\:([a-zA-Z_]\w*)/)) + action { [:PARAM, @ss[1]] } + + when (text = @ss.scan(/\*([a-zA-Z_]\w*)/)) + action { [:GLOB, @ss[1]] } + + when (text = @ss.scan(/\(/)) + action { [:LPAREN, text] } + + when (text = @ss.scan(/\)/)) + action { [:RPAREN, text] } + + when (text = @ss.scan(/./)) + action { [:CHAR, text] } + + else + text = @ss.string[@ss.pos .. -1] + raise ScanError, "can not match: '" + text + "'" + end # if + + else + raise ScanError, "undefined state: '" + state.to_s + "'" + end # case state + token + end # def next_token + +end # class |