Module: CoffeeWithoutNodejs::CoffeeCompiler

Defined in:
lib/coffee_without_nodejs/compiler.rb

Class Attribute Summary collapse

Class Method Summary collapse

Class Attribute Details

.source ⇒ Object 



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# File 'lib/coffee_without_nodejs/compiler.rb', line 12

def source
  @source ||= File.read(File.expand_path('../compiler/coffee-script.js', __FILE__))
end

Class Method Details

.compile(script, bare = true) ⇒ Object 



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# File 'lib/coffee_without_nodejs/compiler.rb', line 36

def compile(script, bare=true)
  compiler.call(wrapper, script, bare: bare)
rescue ExecJS::RuntimeError
  puts $!.message
end

.compile_file(file, bare = true, create_target_jsfile = false) ⇒ Object 



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# File 'lib/coffee_without_nodejs/compiler.rb', line 42

def compile_file(file, bare=true, create_target_jsfile=false)
  root_dir = Pathname(Dir.pwd)
  file_path = Pathname(File.expand_path(file))
  source_code = file_path.read

  target_js_content = compiler.call(wrapper, source_code, bare: bare)

  if create_target_jsfile
    js_path, map_path = create_js_path_from(file_path)
    source_files = file_path.relative_path_from(js_path.dirname).to_s
    generated_file = js_path.relative_path_from(js_path.dirname).to_s
    relative_map_path = map_path.relative_path_from(js_path.dirname).to_s

    File.open(js_path, 'wb') do |f|
      f.print "#{ENV['JS_SHEBANG']}\n\n" if ENV['JS_SHEBANG']
      f.print target_js_content, "\n//# sourceMappingURL=#{relative_map_path}"
    end

    File.open(map_path, 'wb') do |f|
      f.print compiler.call(wrapper, source_code,
                            sourceMap: true,
                            sourceFiles: [source_files],
                            generatedFile: generated_file)['v3SourceMap']
    end

    puts "==> #{js_path.relative_path_from(root_dir)}"
    js_path
  else
    puts "==> #{file_path}" if $stdout.tty?
    target_js_content
  end
rescue ExecJS::RuntimeError
  error_msg = "[#{file_path.relative_path_from(root_dir)}]: #{$!.message}"
  `notify-send "#{error_msg}" -t 5000` if system 'which notify-send &>/dev/null'
  puts error_msg
end

.compiler ⇒ Object 



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# File 'lib/coffee_without_nodejs/compiler.rb', line 32

def compiler
  @coffee ||= ExecJS.compile(source)
end

.create_js_path_from(path) ⇒ Object 



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# File 'lib/coffee_without_nodejs/compiler.rb', line 79

def create_js_path_from(path)
  # if in coffee directory, will create same level js directory.
  path.descend do |x|
    if x.basename.to_s == 'coffee'
      js_path = path.sub('/coffee/', '/js/').sub(/\.js\.coffee$|\.coffee$/, '.js')
      map_path = path.sub('/coffee/', '/.map/').sub(/\.js\.coffee$|\.coffee$/, '.js.map')

      js_dir = js_path.dirname
      map_dir = map_path.dirname

      js_dir.mkpath unless js_dir.exist?
      map_dir.mkpath unless map_dir.exist?

      return [js_path, map_path]
    end
  end
  # if not in coffee directory, rename it.
  js_path = path.sub(/\.js\.coffee$|\.coffee$/, '.js')
  map_path = js_path.sub_ext('.js.map').sub(/\/([^\/]+)$/, '/.\1')

  if path == js_path
    warn 'filename extension is .coffee or .js.coffee?'
    exit
  end
  [js_path, map_path]
end

.wrapper ⇒ Object 



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# File 'lib/coffee_without_nodejs/compiler.rb', line 16

def wrapper
  "(function(script, options) {\n    try {\n  return CoffeeScript.compile(script, options);\n    } catch (err) {\n  if (err instanceof SyntaxError && err.location) {\n      throw new SyntaxError([options.filename, err.location.first_line + 1, err.location.first_column + 1].join(\":\") + \": \" + err.message)\n  } else {\n      throw err;\n  }\n    }\n})\n"
end