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 19

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 24

def args
  @args
end

#state ⇒ Object

Returns the value of attribute state.



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# File 'lib/mirah/util/argument_processor.rb', line 24

def state
  @state
end

Instance Method Details



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# File 'lib/mirah/util/argument_processor.rb', line 89

def print_help
  puts "#{$0} [flags] <files or -e SCRIPT>
  -c, --classpath PATH\tAdd PATH to the Java classpath for compilation
  --cd DIR\t\tSwitch to the specified DIR befor compilation
  -d, --dir DIR\t\tUse DIR as the base dir for compilation, packages
  -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
  -j, --java\t\tOutput .java source (compile mode [mirahc] only)
  --jvm VERSION\t\tEmit JVM bytecode targeting specified JVM
  \t\t\t  version (1.4, 1.5, 1.6, 1.7)
  -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"
  state.help_printed = true
end

#print_version ⇒ Object 



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# File 'lib/mirah/util/argument_processor.rb', line 108

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 26

def process
  state.args = args
  while args.length > 0 && args[0] =~ /^-/
    case args[0]
    when '--classpath', '-c'
      args.shift
      Mirah::Env.decode_paths(args.shift, $CLASSPATH)
    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'
      print_help
      throw :exit
    when '--java', '-j'
      if state.command == :compile
        require 'mirah/jvm/compiler/java_source'
        state.compiler_class = Mirah::JVM::Compiler::JavaSource
        args.shift
      else
        puts "-j/--java flag only applies to \"compile\" mode."
        print_help
        throw :exit
      end
    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::Typer.verbose = true
      Mirah::AST.verbose = true
      Mirah::JVM::Compiler::JVMBytecode.verbose = true
      state.verbose = true
      args.shift
    when '--version', '-v'
      args.shift
      print_version
    when '--no-save-extensions'
      args.shift
      state.save_extensions = false
    else
      puts "unrecognized flag: " + args[0]
      print_help
      throw :exit
    end
  end
  state.destination ||= File.join(File.expand_path('.'), '')
  state.compiler_class ||= Mirah::JVM::Compiler::JVMBytecode
end