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75 lines
2.3 KiB
CoffeeScript
75 lines
2.3 KiB
CoffeeScript
# The Narwhal-compatibility wrapper for CoffeeScript.
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# Require external dependencies.
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OS: require 'os'
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File: require 'file'
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Readline: require 'readline'
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# The path to the CoffeeScript Compiler.
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coffeePath: File.path(module.path).dirname().dirname().dirname().dirname().join('bin', 'coffee')
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# Our general-purpose error handler.
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checkForErrors: (coffeeProcess) ->
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return true if coffeeProcess.wait() is 0
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system.stderr.print coffeeProcess.stderr.read()
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throw new Error "CoffeeScript compile error"
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# Run a simple REPL, round-tripping to the CoffeeScript compiler for every
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# command.
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exports.run: (args) ->
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if args.length
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for path, i in args
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exports.evalCS File.read path
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delete args[i]
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return true
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while true
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try
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system.stdout.write('coffee> ').flush()
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result: exports.evalCS Readline.readline(), ['--globals']
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print result if result isnt undefined
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catch e
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print e
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# Compile a given CoffeeScript file into JavaScript.
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exports.compileFile: (path) ->
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coffee: OS.popen [coffeePath, "--print", "--no-wrap", path]
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checkForErrors coffee
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coffee.stdout.read()
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# Compile a string of CoffeeScript into JavaScript.
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exports.compile: (source, flags) ->
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coffee: OS.popen [coffeePath, "--eval", "--no-wrap"].concat flags or []
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coffee.stdin.write(source).flush().close()
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checkForErrors coffee
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coffee.stdout.read()
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# Evaluating a string of CoffeeScript first compiles it externally.
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exports.evalCS: (source, flags) ->
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eval exports.compile source, flags
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# Make a factory for the CoffeeScript environment.
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exports.makeNarwhalFactory: (path) ->
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code: exports.compileFile path
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factoryText: "function(require,exports,module,system,print){" + code + "/**/\n}"
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if system.engine is "rhino"
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Packages.org.mozilla.javascript.Context.getCurrentContext().compileFunction(global, factoryText, path, 0, null)
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else
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# eval requires parentheses, but parentheses break compileFunction.
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eval "(" + factoryText + ")"
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# The Narwhal loader for '.coffee' files.
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factories: {}
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loader: {}
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# Reload the coffee-script environment from source.
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loader.reload: (topId, path) ->
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factories[topId]: ->
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exports.makeNarwhalFactory path
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# Ensure that the coffee-script environment is loaded.
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loader.load: (topId, path) ->
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factories[topId] ||= this.reload topId, path
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require.loader.loaders.unshift [".coffee", loader]
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