150 lines
3.8 KiB
JavaScript
150 lines
3.8 KiB
JavaScript
(function() {
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var ACCESSOR, CoffeeScript, Module, REPL_PROMPT, REPL_PROMPT_CONTINUATION, SIMPLEVAR, Script, autocomplete, backlog, completeAttribute, completeVariable, enableColours, error, getCompletions, inspect, readline, repl, run, stdin, stdout;
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CoffeeScript = require('./coffee-script');
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readline = require('readline');
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inspect = require('util').inspect;
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Script = require('vm').Script;
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Module = require('module');
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REPL_PROMPT = 'coffee> ';
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REPL_PROMPT_CONTINUATION = '......> ';
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enableColours = false;
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if (process.platform !== 'win32') {
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enableColours = !process.env.NODE_DISABLE_COLORS;
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}
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stdin = process.openStdin();
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stdout = process.stdout;
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error = function(err) {
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return stdout.write((err.stack || err.toString()) + '\n');
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};
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backlog = '';
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run = function(buffer) {
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var code, returnValue, _;
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if (!buffer.toString().trim() && !backlog) {
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repl.prompt();
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return;
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}
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code = backlog += buffer;
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if (code[code.length - 1] === '\\') {
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backlog = "" + backlog.slice(0, -1) + "\n";
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repl.setPrompt(REPL_PROMPT_CONTINUATION);
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repl.prompt();
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return;
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}
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repl.setPrompt(REPL_PROMPT);
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backlog = '';
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try {
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_ = global._;
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returnValue = CoffeeScript.eval("_=(" + code + "\n)", {
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filename: 'repl',
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modulename: 'repl'
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});
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if (returnValue === void 0) global._ = _;
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process.stdout.write(inspect(returnValue, false, 2, enableColours) + '\n');
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} catch (err) {
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error(err);
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}
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return repl.prompt();
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};
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ACCESSOR = /\s*([\w\.]+)(?:\.(\w*))$/;
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SIMPLEVAR = /\s*(\w*)$/i;
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autocomplete = function(text) {
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return completeAttribute(text) || completeVariable(text) || [[], text];
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};
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completeAttribute = function(text) {
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var all, completions, match, obj, prefix, val;
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if (match = text.match(ACCESSOR)) {
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all = match[0], obj = match[1], prefix = match[2];
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try {
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val = Script.runInThisContext(obj);
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} catch (error) {
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return;
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}
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completions = getCompletions(prefix, Object.getOwnPropertyNames(val));
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return [completions, prefix];
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}
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};
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completeVariable = function(text) {
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var completions, free, keywords, possibilities, r, vars, _ref;
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free = (_ref = text.match(SIMPLEVAR)) != null ? _ref[1] : void 0;
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if (free != null) {
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vars = Script.runInThisContext('Object.getOwnPropertyNames(this)');
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keywords = (function() {
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var _i, _len, _ref2, _results;
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_ref2 = CoffeeScript.RESERVED;
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_results = [];
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for (_i = 0, _len = _ref2.length; _i < _len; _i++) {
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r = _ref2[_i];
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if (r.slice(0, 2) !== '__') _results.push(r);
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}
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return _results;
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})();
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possibilities = vars.concat(keywords);
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completions = getCompletions(free, possibilities);
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return [completions, free];
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}
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};
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getCompletions = function(prefix, candidates) {
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var el, _i, _len, _results;
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_results = [];
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for (_i = 0, _len = candidates.length; _i < _len; _i++) {
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el = candidates[_i];
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if (el.indexOf(prefix) === 0) _results.push(el);
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}
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return _results;
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};
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process.on('uncaughtException', error);
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if (readline.createInterface.length < 3) {
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repl = readline.createInterface(stdin, autocomplete);
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stdin.on('data', function(buffer) {
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return repl.write(buffer);
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});
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} else {
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repl = readline.createInterface(stdin, stdout, autocomplete);
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}
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repl.on('attemptClose', function() {
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if (backlog) {
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backlog = '';
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process.stdout.write('\n');
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repl.setPrompt(REPL_PROMPT);
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return repl.prompt();
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} else {
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return repl.close();
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}
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});
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repl.on('close', function() {
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process.stdout.write('\n');
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return stdin.destroy();
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});
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repl.on('line', run);
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repl.setPrompt(REPL_PROMPT);
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repl.prompt();
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}).call(this);
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