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majorly cleaned up the CoffeeScript that defines the Narwhal integration

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This commit is contained in:
Jeremy Ashkenas
2009-12-24 23:28:01 -08:00
parent 2d57ee693b
commit 7a0de52c96
4 changed files with 83 additions and 90 deletions
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51
lib-js/coffee-script.js
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@@ -1,6 +1,22 @@
(function(){
var File = require('file');
// This (javascript) file is generated from lib/coffee_script/narwhal/coffee-script.cs Executes the `coffee-script` Ruby program to convert from CoffeeScript
// to Javascript. Eventually this will hopefully happen entirely within JS. Require external dependencies.
var OS = require('os');
var File = require('file');
var Readline = require('readline');
// The path to the CoffeeScript Compiler.
var coffeePath = File.path(module.path).dirname().dirname().join('bin', 'coffee-script');
// Our general-purpose error handler.
var checkForErrors = function(coffeeProcess) {
if (coffeeProcess.wait() === 0) {
return true;
}
system.stderr.print(coffeeProcess.stderr.read());
throw new Error("coffee-script compile error");
};
// Run a simple REPL, round-tripping to the CoffeeScript compiler for every
// command.
exports.run = function(args) {
args.shift();
if (args.length) {
@@ -9,7 +25,7 @@
while (true) {
try {
system.stdout.write('cs> ').flush();
var result = exports.cs_eval(require('readline').readline());
var result = exports.evalCS(Readline.readline());
if (result !== undefined) {
print(result);
}
@@ -18,34 +34,25 @@
}
}
};
// executes the coffee-script Ruby program to convert from CoffeeScript to Objective-J.
// eventually this will hopefully be replaced by a JavaScript program.
var coffeePath = File.path(module.path).dirname().dirname().join('bin', 'coffee-script');
// Compile a given CoffeeScript file into JavaScript.
exports.compileFile = function(path) {
var coffee = OS.popen([coffeePath, "--print", "--no-wrap", path]);
if (coffee.wait() !== 0) {
system.stderr.print(coffee.stderr.read());
throw new Error("coffee-script compile error");
}
checkForErrors(coffee);
return coffee.stdout.read();
};
// Compile a string of CoffeeScript into JavaScript.
exports.compile = function(source) {
var coffee = OS.popen([coffeePath, "--eval", "--no-wrap"]);
coffee.stdin.write(source).flush().close();
if (coffee.wait() !== 0) {
system.stderr.print(coffee.stderr.read());
throw new Error("coffee-script compile error");
}
checkForErrors(coffee);
return coffee.stdout.read();
};
// these two functions are equivalent to objective-j's objj_eval/make_narwhal_factory.
// implemented as a call to coffee and objj_eval/make_narwhal_factory
exports.cs_eval = function(source) {
init();
// Evaluating a string of CoffeeScript first compiles it externally.
exports.evalCS = function(source) {
return eval(exports.compile(source));
};
exports.make_narwhal_factory = function(path) {
init();
// Make a factory for the CoffeeScript environment.
exports.makeNarwhalFactory = function(path) {
var code = exports.compileFile(path);
var factoryText = "function(require,exports,module,system,print){" + code + "/**/\n}";
if (system.engine === "rhino") {
@@ -55,10 +62,4 @@
return eval("(" + factoryText + ")");
}
};
var init = function() {
// make sure it's only done once
init = function() {
};
return init;
};
})();