85 lines
2.1 KiB
JavaScript
85 lines
2.1 KiB
JavaScript
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// Entry point for Node.
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var fs = require('fs');
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var glob = require('glob');
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var path = require('path');
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var traceur = require('traceur');
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exports.RUNTIME_PATH = traceur.RUNTIME_PATH;
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var TRACEUR_PATH = traceur.RUNTIME_PATH.replace('traceur-runtime.js', 'traceur.js');
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var SELF_SOURCE_REGEX = /js2dart\/src/;
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var SELF_COMPILE_OPTIONS = {
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modules: 'register',
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moduleName: true,
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script: false // parse as a module
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};
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var needsReload = true;
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// TODO(vojta): call this if sources changed
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exports.sourcesChanged = function() {
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needsReload = true;
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};
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exports.compile = function compile(options, paths, source) {
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if (needsReload) {
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reloadCompiler();
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needsReload = false;
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}
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var inputPath, outputPath, moduleName;
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if (typeof paths === 'string') {
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inputPath = outputPath = paths;
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} else {
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inputPath = paths.inputPath;
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outputPath = paths.inputPath;
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moduleName = paths.moduleName;
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}
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outputPath = outputPath || inputPath;
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moduleName = moduleName || inputPath;
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moduleName = moduleName.replace(/\.\w*$/, '');
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var localOptions = extend(options, {
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moduleName: moduleName
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});
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var CompilerCls = System.get('js2dart/src/compiler').Compiler;
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return (new CompilerCls(localOptions)).compile(source, inputPath, outputPath);
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};
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// Transpile and evaluate the code in `src`.
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// Use existing traceur to compile our sources.
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function reloadCompiler() {
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loadModule(TRACEUR_PATH, false);
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glob.sync(__dirname + '/src/**/*.js').forEach(function(fileName) {
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loadModule(fileName, true);
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});
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}
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function loadModule(filepath, transpile) {
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var data = fs.readFileSync(filepath, 'utf8');
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if (!data) {
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throw new Error('Failed to import ' + filepath);
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}
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if (transpile) {
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var moduleName = filepath
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.replace(__dirname, 'js2dart')
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.replace(/\.\w*$/, '');
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data = (new traceur.NodeCompiler(
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extend(SELF_COMPILE_OPTIONS, { moduleName: moduleName } )
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)).compile(data, filepath, filepath);
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}
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('global', eval)(data);
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}
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function extend(source, props) {
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var res = {};
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for (var prop in source) {
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res[prop] = source[prop];
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}
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for (var prop in props) {
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res[prop] = props[prop];
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}
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return res;
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}
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