Class: Mirah::Util::ArgumentProcessor

Inherits:
Object
  • Object
show all
Defined in:
lib/mirah/util/argument_processor.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(state, args) ⇒ ArgumentProcessor

Returns a new instance of ArgumentProcessor.



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# File 'lib/mirah/util/argument_processor.rb', line 23

def initialize(state, args)
  @state = state
  @args = args
end

Instance Attribute Details

#args ⇒ Object

Returns the value of attribute args.



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# File 'lib/mirah/util/argument_processor.rb', line 28

def args
  @args
end

#exit_status_code ⇒ Object Also known as: exit?

Returns the value of attribute exit_status_code.



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# File 'lib/mirah/util/argument_processor.rb', line 28

def exit_status_code
  @exit_status_code
end

#state ⇒ Object

Returns the value of attribute state.



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# File 'lib/mirah/util/argument_processor.rb', line 28

def state
  @state
end

Instance Method Details

#help_message ⇒ Object 



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# File 'lib/mirah/util/argument_processor.rb', line 121

def help_message
  "#{$0} [flags] <files or -e SCRIPT>
  -c, --classpath PATH\tAdd PATH to the Java classpath for compilation
  --bootclasspath PATH\tSet the Java bootclasspath to PATH for compilation
  --cd DIR\t\tSwitch to the specified DIR before compilation
  -d, --dest DIR\t\tUse DIR as the dir to place the generated class files
  -e CODE\t\tCompile or run the inline script following -e
  \t\t\t  (the class will be named \"DashE\")
  --explicit-packages\tRequire explicit 'package' lines in source
  -h, --help\t\tPrint this help message
  -I DIR\t\tAdd DIR to the Ruby load path before running
  --jvm VERSION\t\tEmit JVM bytecode targeting specified JVM
  \t\t\t  version (1.4, 1.5, 1.6, 1.7)
  --no-save-extensions\tDon't write macro classes to files
  --no-color\t\tDon't use color when writing logs
  -N, --new-backend\tUse the new backend
  -T, --new-types\tUse the new type system
  -p, --plugin PLUGIN\trequire 'mirah/plugin/PLUGIN' before running
  -v, --version\t\tPrint the version of Mirah to the console
  -V, --verbose\t\tVerbose logging
  --vmodule logger.name=LEVEL[,...]\t\tSet the Level for the specified Java loggers"
end

#print_help ⇒ Object 



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# File 'lib/mirah/util/argument_processor.rb', line 116

def print_help
  puts help_message
  state.help_printed = true
end

#print_version ⇒ Object 



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# File 'lib/mirah/util/argument_processor.rb', line 144

def print_version
  puts "Mirah v#{Mirah::VERSION}"
  state.version_printed = true
end

#process ⇒ Object 



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# File 'lib/mirah/util/argument_processor.rb', line 32

def process
  state.args = args
  while args.length > 0 && args[0] =~ /^-/
    case args[0]
    when '--classpath', '-c'
      args.shift
      state.classpath = args.shift
    when '--bootclasspath'
      args.shift
      state.bootclasspath = args.shift
    when '--cd'
      args.shift
      Dir.chdir(args.shift)
    when '--dest', '-d'
      args.shift
      state.destination = File.join(File.expand_path(args.shift), '')
    when '-e'
      break
    when '--explicit-packages'
      args.shift
      Mirah::AST::Script.explicit_packages = true
    when '--help', '-h'
      args.shift
      print_help

      self.exit_status_code = 0
      break
    when '--jvm'
      args.shift
      state.set_jvm_version(args.shift)
    when '-I'
      args.shift
      $: << args.shift
    when '--plugin', '-p'
      args.shift
      plugin = args.shift
      require "mirah/plugin/#{plugin}"
    when '--verbose', '-V'
      Mirah::Logging::MirahLogger.level = Mirah::Logging::Level::FINE
      state.verbose = true
      args.shift
    when '--vmodule'
      args.shift
      spec = args.shift
      spec.split(',').each do |item|
        logger, level = item.split("=")
        logger = java.util.logging.Logger.getLogger(logger)
        (state.loggers ||= []) << logger
        level = java.util.logging.Level.parse(level)
        logger.setLevel(level)
      end
    when '--no-color'
      args.shift
      Mirah::Logging::MirahHandler.formatter = Mirah::Logging::LogFormatter.new(false)
    when '--version', '-v'
      args.shift
      print_version

      self.exit_status_code = 0 if args.empty?
      break
    when '--no-save-extensions'
      args.shift
      state.save_extensions = false
    when '--new-backend', '-N'
      args.shift
      state.compiler_class = Mirah::JVM::Compiler::Backend
    when '--new-types', '-T'
      args.shift
      java_import 'org.mirah.jvm.mirrors.MirrorTypeSystem'
      state.type_system = MirrorTypeSystem.new
    else
      $stderr.puts "unrecognized flag: " + args[0]

      self.exit_status_code = 1
      break
    end
  end

  return if exit?

  state.destination ||= File.join(File.expand_path('.'), '')
  state.compiler_class ||= Mirah::JVM::Compiler::JVMBytecode
end