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#! /your/favourite/path/to/ruby
# -*- Ruby -*-
# -*- 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 'optparse'
require_relative '../controllers/application_controller.rb'
module RubyVM::Insns2VM
def self.router argv
options = { destdir: nil, basedir: nil }
targets = generate_parser(options).parse argv
return targets.map do |i|
next ApplicationController.new.generate i, options[:destdir], options[:basedir]
end
end
def self.generate_parser(options)
OptionParser.new do |this|
this.on "-I", "--srcdir=DIR", <<-'end'
Historically this option has been passed to the script. This is
supposedly because at the beginning the script was placed
outside of the ruby source tree. Decades passed since the merge
of YARV, now I can safely assume this feature is obsolescent.
Just ignore the passed value here.
end
this.on "-L", "--vpath=SPEC", <<-'end'
Likewise, this option is no longer supported.
end
this.on "--path-separator=SEP", /\A(?:\W\z|\.(\W).+)/, <<-'end'
Old script says this option is a "separator for vpath". I am
confident we no longer need this option.
end
this.on "-Dname", "--enable=name[,name...]", Array, <<-'end'
This option was used to override VM option that is defined in
vm_opts.h. Now it is officially unsupported because vm_opts.h to
remain mismatched with this option must break things. Just edit
vm_opts.h directly.
end
this.on "-Uname", "--disable=name[,name...]", Array, <<-'end'
This option was used to override VM option that is defined in
vm_opts.h. Now it is officially unsupported because vm_opts.h to
remain mismatched with this option must break things. Just edit
vm_opts.h directly.
end
this.on "-i", "--insnsdef=FILE", "--instructions-def", <<-'end'
This option was used to specify alternative path to insns.def. For
the same reason to ignore -I, we no longer support this.
end
this.on "-o", "--opt-operanddef=FILE", "--opt-operand-def", <<-'end'
This option was used to specify alternative path to opt_operand.def.
For the same reason to ignore -I, we no longer support this.
end
this.on "-u", "--opt-insnunifdef=FILE", "--opt-insn-unif-def", <<-'end'
This option was used to specify alternative path to
opt_insn_unif.def. For the same reason to ignore -I, we no
longer support this.
end
this.on "-C", "--[no-]use-const", <<-'end'
We use const whenever possible now so this option is ignored.
The author believes that C compilers can constant-fold.
end
this.on "-d", "--destdir", "--output-directory=DIR", <<-'begin' do |dir|
THIS IS THE ONLY OPTION THAT WORKS today. Change destination
directory from the current working directory to the given path.
begin
raise "directory was not found in '#{dir}'" unless Dir.exist?(dir)
options[:destdir] = dir
end
this.on "--basedir=DIR", <<-'begin' do |dir|
Change the base directory from the current working directory
to the given path. Used for searching the source template.
begin
raise "directory was not found in '#{dir}'" unless Dir.exist?(dir)
options[:basedir] = dir
end
this.on "-V", "--[no-]verbose", <<-'end'
Please let us ignore this and be modest.
end
end
end
private_class_method :generate_parser
end
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