/usr/lib/ruby/1.9.1/ripper/sexp.rb is in libruby1.9.1 1.9.3.484-2ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 | #
# $Id: sexp.rb 31342 2011-04-25 02:28:49Z naruse $
#
# 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.
# Returns more readable tree rather than Ripper.sexp_raw.
# This method is for mainly developper use.
#
# require 'ripper'
# require 'pp'
#
# pp Ripper.sexp("def m(a) nil end")
# #=> [:program,
# [[:def,
# [:@ident, "m", [1, 4]],
# [:paren, [:params, [[:@ident, "a", [1, 6]]], nil, nil, nil, nil]],
# [:bodystmt, [[:var_ref, [:@kw, "nil", [1, 9]]]], nil, nil, nil]]]]
#
def Ripper.sexp(src, filename = '-', lineno = 1)
SexpBuilderPP.new(src, filename, lineno).parse
end
# [EXPERIMENTAL]
# Parses +src+ and create S-exp tree.
# This method is for mainly developper use.
#
# require 'ripper'
# require 'pp'
#
# pp Ripper.sexp_raw("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_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
|