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#
# ripper/sexp.rb
#
# 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)
SexpBuilder.new(src, filename, lineno).parse
end
class SexpBuilder < ::Ripper #:nodoc:
private
PARSER_EVENTS.each do |event|
module_eval(<<-End)
def on_#{event}(*list)
list.unshift :#{event}
list
end
End
end
SCANNER_EVENTS.each do |event|
module_eval(<<-End)
def on_#{event}(tok)
[:@#{event}, tok, [lineno(), column()]]
end
End
end
end
end
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