Project

General

Profile

Actions

Bug #4544

closed

Ripperで「:"a \n b \n c"」を正常にパースできない

Added by exkazuu (Kazunori SAKAMOTO) about 11 years ago. Updated almost 11 years ago.

Status:
Closed
Priority:
Normal
Assignee:
-
Target version:
-
ruby -v:
-
Backport:
[ruby-dev:<unknown>]

Description

=begin
Ripper::SexpBuilder.new(%Q!:"a \n b \n c"!).parse にて、on_tstring_content メソッドが二回連続で呼び出されます。

検証済みバージョン

  • ruby 1.9.3dev (2011-03-31 trunk 31223) [i686-linux]
  • ruby 1.9.2p180 (2011-02-18 revision 30909) [i686-linux]
  • ruby 1.9.1p431 (2011-02-18 revision 30908) [i686-linux]

検証用スクリプト
require 'ripper'

class Parser < Ripper::SexpBuilder
ms = Ripper::SexpBuilder.new('').methods
defs = ms.map { |s| s.to_s }
.select { |s| s.start_with?('on_') }
.map { |s| %Q{
def #{s}(*args)
print '#{s}: '
p args
end
}}.join
eval(defs)
end

def parse(src)
puts "" + src.inspect + ""
Parser.new(src).parse
puts
end

parse(%Q!:"a \n b \n c"!)
parse(%Q!:"a \n b c"!)
parse(%Q!:"a b c"!)

実行結果
----":"a \n b \n c""----
on_symbeg: [":""]
on_tstring_content: ["a \n b \n"]
on_tstring_content: [" c"]
on_xstring_new: []
on_xstring_add: ], [" c"
on_tstring_end: ["""]
on_dyna_symbol: [], [" c"]
on_stmts_new: []
on_stmts_add: ], [[[], [" c"]]
on_program: [], [[[], [" c"]]]

----":"a \n b c""----
on_symbeg: [":""]
on_tstring_content: ["a \n"]
on_tstring_content: [" b c"]
on_xstring_new: []
on_xstring_add: ], [" b c"
on_tstring_end: ["""]
on_dyna_symbol: [], [" b c"]
on_stmts_new: []
on_stmts_add: ], [[[], [" b c"]]
on_program: [], [[[], [" b c"]]]

----":"a b c""----
on_symbeg: [":""]
on_tstring_content: ["a b c"]
on_xstring_new: []
on_xstring_add: ], ["a b c"
on_tstring_end: ["""]
on_dyna_symbol: [], ["a b c"]
on_stmts_new: []
on_stmts_add: ], [[[], ["a b c"]]
on_program: [], [[[], ["a b c"]]]
=end

Actions

Also available in: Atom PDF