74 lines
1.7 KiB
Ruby
Executable File
74 lines
1.7 KiB
Ruby
Executable File
#!/usr/bin/env ruby
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# frozen_string_literal: true
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# Emit AST from parsed Ruby code by RuboCop.
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#
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# This is an alternative to `ruby-parser` shipped with `parser` gem.
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#
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# Usage:
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# rubocop-parse -e 'puts "hello"'
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# (send nil :puts
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# (str "hello"))
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#
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# rubocop-parse -e 'puts "hello"' -v 3.0
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# (send nil :puts
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# (str "hello"))
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#
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# rubocop-parse app/models/project.rb
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# (begin
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# (send nil :require
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# (str "carrierwave/orm/activerecord"))
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# (class
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# (const nil :Project)
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# (const nil :ApplicationRecord)
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# (begin
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# (send nil :include
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# ...
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require_relative '../config/bundler_setup'
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require 'rubocop'
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require 'optparse'
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def print_ast(file, source, version)
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version ||= RuboCop::ConfigStore.new.for_file(file).target_ruby_version
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puts RuboCop::AST::ProcessedSource.new(source, version).ast.to_s
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end
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options = Struct.new(:eval, :ruby_version, :print_help, keyword_init: true).new
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parser = OptionParser.new do |opts|
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opts.banner = "Usage: #{$0} [-e code] [FILE...]"
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opts.on('-e FRAGMENT', '--eval FRAGMENT', 'Process a fragment of Ruby code') do |code|
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options.eval = code
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end
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opts.on('-v RUBY_VERSION', '--ruby-version RUBY_VERSION',
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'Parse as Ruby would. Defaults to RuboCop TargetRubyVersion setting.') do |ruby_version|
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options.ruby_version = Float(ruby_version)
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end
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opts.on('-h', '--help') do
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options.print_help = true
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end
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end
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args = parser.parse!
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if options.print_help
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puts parser
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exit
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end
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print_ast('', options.eval, options.ruby_version) if options.eval
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args.each do |arg|
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if File.file?(arg)
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source = File.read(arg)
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print_ast(arg, source, options.ruby_version)
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else
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warn "Skipping non-file #{arg.inspect}"
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end
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end
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