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Diffstat (limited to 'tool/ruby_vm/models/c_expr.rb')
-rw-r--r-- | tool/ruby_vm/models/c_expr.rb | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/tool/ruby_vm/models/c_expr.rb b/tool/ruby_vm/models/c_expr.rb new file mode 100644 index 0000000000..b19dd8bb48 --- /dev/null +++ b/tool/ruby_vm/models/c_expr.rb @@ -0,0 +1,41 @@ +#! /your/favourite/path/to/ruby +# -*- mode: ruby; coding: utf-8; indent-tabs-mode: nil; ruby-indent-level: 2 -*- +# -*- frozen_string_literal: true; -*- +# -*- warn_indent: true; -*- +# +# Copyright (c) 2017 Urabe, Shyouhei. All rights reserved. +# +# This file is a part of the programming language Ruby. Permission is hereby +# granted, to either redistribute and/or modify this file, provided that the +# conditions mentioned in the file COPYING are met. Consult the file for +# details. + +require_relative '../helpers/c_escape.rb' + +class RubyVM::CExpr + include RubyVM::CEscape + + attr_reader :__FILE__, :__LINE__, :expr + + def initialize location:, expr: + @__FILE__ = location[0] + @__LINE__ = location[1] + @expr = expr + end + + # blank, in sense of C program. + RE = %r'\A{\g<s>*}\z|\A(?<s>\s|/[*][^*]*[*]+([^*/][^*]*[*]+)*/)*\z' + if RUBY_VERSION > '2.4' then + def blank? + RE.match? @expr + end + else + def blank? + RE =~ @expr + end + end + + def inspect + sprintf "#<%s:%d %s>", @__FILE__, @__LINE__, @expr + end +end |