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f6ea376317
Previous commit changed insns.def format. Now is the time for its generators. In doing so I chose to modernize the system, not just patch. My attempt includes - extensive use of Onigumo regular expressions - split from one big file (instruction.rb) into separated MVC - partial view Also, let me take this opportunity to kill old unused features such as - stack caching - minsns / yasmdata which are never seriously used - yarvarch document generation (moved to doc/) - vast majority of unused arguments to insns2vm.rb This commit generates VM source codes that cleanly compile, and the generated binary passes tests. At least for me. git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@61784 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
49 lines
1.2 KiB
Ruby
49 lines
1.2 KiB
Ruby
#! /your/favourite/path/to/ruby
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# -*- mode: ruby; coding: utf-8; indent-tabs-mode: nil; ruby-indent-level: 2 -*-
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# -*- frozen_string_literal: true; -*-
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# -*- warn_indent: true; -*-
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#
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# Copyright (c) 2017 Urabe, Shyouhei. All rights reserved.
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#
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# This file is a part of the programming language Ruby. Permission is hereby
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# granted, to either redistribute and/or modify this file, provided that the
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# conditions mentioned in the file COPYING are met. Consult the file for
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# details.
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require 'pathname'
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require 'strscan'
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class RubyVM::Scanner
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attr_reader :__FILE__
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attr_reader :__LINE__
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def initialize path
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src = Pathname.new __dir__
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src += path
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@__LINE__ = 1
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@__FILE__ = src.realpath.to_path
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str = src.read mode: 'rt:utf-8:utf-8'
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@scanner = StringScanner.new str
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end
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def eos?
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@scanner.eos?
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end
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def scan re
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ret = @__LINE__
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match = @scanner.scan re
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return unless match
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@__LINE__ += match.count "\n"
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return ret
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end
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def scan! re
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scan re or raise sprintf "parse error at %s:%d near:\n %s...", \
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@__FILE__, @__LINE__, @scanner.peek(32)
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end
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def [] key
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return @scanner[key]
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end
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end
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