96 lines
2.9 KiB
JavaScript
96 lines
2.9 KiB
JavaScript
(function() {
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var ACCESSOR, CoffeeScript, SIMPLEVAR, Script, autocomplete, backlog, completeAttribute, completeVariable, error, getCompletions, getPropertyNames, readline, repl, run, stdin, stdout;
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var __hasProp = Object.prototype.hasOwnProperty;
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CoffeeScript = require('./coffee-script');
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readline = require('readline');
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Script = process.binding('evals').Script;
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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\n');
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};
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backlog = '';
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run = function(buffer) {
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var code, val;
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code = backlog += '\n' + buffer.toString();
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if (code[code.length - 1] === '\\') {
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return backlog = backlog.slice(0, backlog.length - 1);
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}
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backlog = '';
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try {
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val = CoffeeScript.eval(code, {
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bare: true,
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globals: true,
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filename: 'repl'
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});
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if (val !== void 0) {
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process.stdout.write(val + '\n');
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}
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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 [[], text];
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}
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completions = getCompletions(prefix, getPropertyNames(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, scope, _ref;
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if (free = (_ref = text.match(SIMPLEVAR)) != null ? _ref[1] : void 0) {
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scope = Script.runInThisContext('this');
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completions = getCompletions(free, CoffeeScript.RESERVED.concat(getPropertyNames(scope)));
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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) {
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_results.push(el);
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}
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}
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return _results;
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};
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getPropertyNames = function(obj) {
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var name, _results;
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_results = [];
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for (name in obj) {
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if (!__hasProp.call(obj, name)) continue;
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_results.push(name);
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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.setPrompt('coffee> ');
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repl.on('close', function() {
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return stdin.destroy();
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});
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repl.on('line', run);
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repl.prompt();
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}).call(this);
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