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33 lines
1.0 KiB
CoffeeScript
33 lines
1.0 KiB
CoffeeScript
# A very simple Read-Eval-Print-Loop. Compiles one line at a time to JavaScript
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# and evaluates it. Good for simple tests, or poking around the **Node.js** API.
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# Using it looks like this:
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#
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# coffee> puts "$num bottles of beer" for num in [99..1]
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# Require the **coffee-script** module to get access to the compiler.
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CoffeeScript: require './coffee-script'
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helpers: require('./helpers').helpers
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# Our prompt.
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prompt: 'coffee> '
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# Quick alias for quitting the REPL.
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helpers.extend global, {
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quit: -> process.exit(0)
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}
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# The main REPL function. **run** is called every time a line of code is entered.
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# Attempt to evaluate the command. If there's an exception, print it out instead
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# of exiting.
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run: (code) ->
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try
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val: CoffeeScript.run code, {no_wrap: true, globals: true, source: 'repl'}
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p val if val isnt undefined
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catch err
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puts err.stack or err.toString()
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print prompt
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# Start up the REPL by opening **stdio** and listening for input.
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process.stdio.addListener 'data', run
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process.stdio.open()
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print prompt |