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26 lines
636 B
Ruby
Executable file
26 lines
636 B
Ruby
Executable file
#! /usr/bin/ruby -p
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# -*- coding: us-ascii -*-
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# Used to build the Ruby parsing code in common.mk and Ripper.
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BEGIN {
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require 'optparse'
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require_relative 'lib/vpath'
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vpath = VPath.new
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header = nil
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opt = OptionParser.new do |o|
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vpath.def_options(o)
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header = o.order!(ARGV).shift
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end or abort opt.opt_s
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TOKENS = {}
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h = vpath.read(header) rescue abort("#{header} not found in #{vpath.inspect}")
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h.scan(/^#define\s+RUBY_TOKEN_(\w+)\s+(\d+)/) do |token, id|
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TOKENS[token] = id
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end
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TOKENS_RE = /\bRUBY_TOKEN\((#{TOKENS.keys.join('|')})\)\s*(?=\s)/
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}
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$_.gsub!(TOKENS_RE) {TOKENS[$1]} if /^%token/ =~ $_
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