mirror of
https://github.com/jashkenas/coffeescript.git
synced 2026-05-03 03:00:14 -04:00
Initial commit of REPL based on node's REPLServer
This commit is contained in:
Alon Salant
@@ -67,7 +67,7 @@
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loadRequires();
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}
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if (opts.interactive) {
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return require('./repl');
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return require('./repl').start();
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}
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if (opts.watch && !fs.watch) {
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return printWarn("The --watch feature depends on Node v0.6.0+. You are running " + process.version + ".");
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@@ -79,7 +79,7 @@
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return compileScript(null, sources[0]);
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}
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if (!sources.length) {
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return require('./repl');
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return require('./repl').start();
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}
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literals = opts.run ? sources.splice(1) : [];
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process.argv = process.argv.slice(0, 2).concat(literals);
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@@ -1,276 +1,37 @@
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// Generated by CoffeeScript 1.5.0-pre
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(function() {
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var ACCESSOR, CoffeeScript, Module, REPL_PROMPT, REPL_PROMPT_CONTINUATION, REPL_PROMPT_MULTILINE, SIMPLEVAR, Script, autocomplete, backlog, completeAttribute, completeVariable, enableColours, error, getCompletions, inspect, multilineMode, pipedInput, readline, repl, run, stdin, stdout,
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__indexOf = [].indexOf || function(item) { for (var i = 0, l = this.length; i < l; i++) { if (i in this && this[i] === item) return i; } return -1; };
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var CoffeeScript, merge, repl, replDefaults, vm;
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stdin = process.openStdin();
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vm = require('vm');
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stdout = process.stdout;
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repl = require('repl');
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CoffeeScript = require('./coffee-script');
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readline = require('readline');
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merge = require('./helpers').merge;
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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_MULTILINE = '------> ';
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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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error = function(err) {
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return stdout.write((err.stack || err.toString()) + '\n');
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};
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ACCESSOR = /\s*([\w\.]+)(?:\.(\w*))$/;
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SIMPLEVAR = /(\w+)$/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, candidates, completions, key, match, obj, prefix, _i, _len, _ref;
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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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replDefaults = {
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prompt: "coffee> ",
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"eval": function(code, context, file, cb) {
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try {
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obj = Script.runInThisContext(obj);
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} catch (e) {
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return;
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code = CoffeeScript.compile(code, {
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filename: file,
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bare: true
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});
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return cb(null, vm.runInContext(code, context, file));
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} catch (err) {
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return cb(err);
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}
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if (obj == null) {
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return;
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}
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obj = Object(obj);
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candidates = Object.getOwnPropertyNames(obj);
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while (obj = Object.getPrototypeOf(obj)) {
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_ref = Object.getOwnPropertyNames(obj);
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for (_i = 0, _len = _ref.length; _i < _len; _i++) {
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key = _ref[_i];
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if (__indexOf.call(candidates, key) < 0) {
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candidates.push(key);
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}
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}
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}
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completions = getCompletions(prefix, candidates);
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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 candidates, completions, free, key, keywords, r, vars, _i, _len, _ref;
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free = (_ref = text.match(SIMPLEVAR)) != null ? _ref[1] : void 0;
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if (text === "") {
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free = "";
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}
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if (free != null) {
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vars = Script.runInThisContext('Object.getOwnPropertyNames(Object(this))');
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keywords = (function() {
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var _i, _len, _ref1, _results;
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_ref1 = CoffeeScript.RESERVED;
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_results = [];
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for (_i = 0, _len = _ref1.length; _i < _len; _i++) {
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r = _ref1[_i];
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if (r.slice(0, 2) !== '__') {
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_results.push(r);
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}
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}
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return _results;
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})();
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candidates = vars;
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for (_i = 0, _len = keywords.length; _i < _len; _i++) {
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key = keywords[_i];
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if (__indexOf.call(candidates, key) < 0) {
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candidates.push(key);
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}
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module.exports = {
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start: function(opts) {
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if (opts == null) {
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opts = {};
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}
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completions = getCompletions(free, candidates);
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return [completions, free];
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return repl.start(merge(replDefaults, opts));
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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 (0 === el.indexOf(prefix)) {
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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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process.on('uncaughtException', error);
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backlog = '';
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run = function(buffer) {
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var code, returnValue, _;
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buffer = buffer.replace(/(^|[\r\n]+)(\s*)##?(?:[^#\r\n][^\r\n]*|)($|[\r\n])/, "$1$2$3");
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buffer = buffer.replace(/[\r\n]+$/, "");
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if (multilineMode) {
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backlog += "" + buffer + "\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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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) {
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global._ = _;
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}
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repl.output.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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if (stdin.readable && stdin.isRaw) {
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pipedInput = '';
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repl = {
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prompt: function() {
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return stdout.write(this._prompt);
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},
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setPrompt: function(p) {
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return this._prompt = p;
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},
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input: stdin,
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output: stdout,
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on: function() {}
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};
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stdin.on('data', function(chunk) {
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var line, lines, _i, _len, _ref;
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pipedInput += chunk;
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if (!/\n/.test(pipedInput)) {
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return;
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}
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lines = pipedInput.split("\n");
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pipedInput = lines[lines.length - 1];
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_ref = lines.slice(0, -1);
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for (_i = 0, _len = _ref.length; _i < _len; _i++) {
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line = _ref[_i];
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if (!(line)) {
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continue;
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}
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stdout.write("" + line + "\n");
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run(line);
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}
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});
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stdin.on('end', function() {
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var line, _i, _len, _ref;
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_ref = pipedInput.trim().split("\n");
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for (_i = 0, _len = _ref.length; _i < _len; _i++) {
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line = _ref[_i];
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if (!(line)) {
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continue;
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}
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stdout.write("" + line + "\n");
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run(line);
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}
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stdout.write('\n');
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return process.exit(0);
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});
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} else {
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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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}
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multilineMode = false;
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repl.input.on('keypress', function(char, key) {
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var cursorPos, newPrompt;
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if (!(key && key.ctrl && !key.meta && !key.shift && key.name === 'v')) {
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return;
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}
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cursorPos = repl.cursor;
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repl.output.cursorTo(0);
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repl.output.clearLine(1);
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multilineMode = !multilineMode;
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if (!multilineMode && backlog) {
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repl._line();
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}
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backlog = '';
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repl.setPrompt((newPrompt = multilineMode ? REPL_PROMPT_MULTILINE : REPL_PROMPT));
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repl.prompt();
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return repl.output.cursorTo(newPrompt.length + (repl.cursor = cursorPos));
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});
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repl.input.on('keypress', function(char, key) {
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if (!(multilineMode && repl.line)) {
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return;
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}
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if (!(key && key.ctrl && !key.meta && !key.shift && key.name === 'd')) {
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return;
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}
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multilineMode = false;
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return repl._line();
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});
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repl.on('attemptClose', function() {
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if (multilineMode) {
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multilineMode = false;
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repl.output.cursorTo(0);
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repl.output.clearLine(1);
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repl._onLine(repl.line);
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return;
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}
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if (backlog || repl.line) {
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backlog = '';
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repl.historyIndex = -1;
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repl.setPrompt(REPL_PROMPT);
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repl.output.write('\n(^C again to quit)');
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return repl._line((repl.line = ''));
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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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repl.output.write('\n');
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return repl.input.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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@@ -68,12 +68,12 @@ exports.run = ->
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return usage() if opts.help
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return version() if opts.version
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loadRequires() if opts.require
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return require './repl' if opts.interactive
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return require('./repl').start() if opts.interactive
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if opts.watch and !fs.watch
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return printWarn "The --watch feature depends on Node v0.6.0+. You are running #{process.version}."
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return compileStdio() if opts.stdio
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return compileScript null, sources[0] if opts.eval
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return require './repl' unless sources.length
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return require('./repl').start() unless sources.length
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literals = if opts.run then sources.splice 1 else []
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process.argv = process.argv[0..1].concat literals
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process.argv[0] = 'coffee'
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208
src/repl.coffee
208
src/repl.coffee
@@ -1,197 +1,17 @@
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# 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> console.log "#{num} bottles of beer" for num in [99..1]
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# Start by opening up `stdin` and `stdout`.
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stdin = process.openStdin()
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stdout = process.stdout
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# Require the **coffee-script** module to get access to the compiler.
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vm = require 'vm'
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repl = require 'repl'
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CoffeeScript = require './coffee-script'
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readline = require 'readline'
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{inspect} = require 'util'
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{Script} = require 'vm'
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Module = require 'module'
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{merge} = require './helpers'
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# REPL Setup
|
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replDefaults =
|
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prompt: "coffee> ",
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eval: (code, context, file, cb) ->
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try
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code = CoffeeScript.compile(code, {filename: file, bare: true})
|
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cb(null, vm.runInContext(code, context, file))
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catch err
|
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cb(err)
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# Config
|
||||
REPL_PROMPT = 'coffee> '
|
||||
REPL_PROMPT_MULTILINE = '------> '
|
||||
REPL_PROMPT_CONTINUATION = '......> '
|
||||
enableColours = no
|
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unless process.platform is 'win32'
|
||||
enableColours = not process.env.NODE_DISABLE_COLORS
|
||||
|
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# Log an error.
|
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error = (err) ->
|
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stdout.write (err.stack or err.toString()) + '\n'
|
||||
|
||||
## Autocompletion
|
||||
|
||||
# Regexes to match complete-able bits of text.
|
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ACCESSOR = /\s*([\w\.]+)(?:\.(\w*))$/
|
||||
SIMPLEVAR = /(\w+)$/i
|
||||
|
||||
# Returns a list of completions, and the completed text.
|
||||
autocomplete = (text) ->
|
||||
completeAttribute(text) or completeVariable(text) or [[], text]
|
||||
|
||||
# Attempt to autocomplete a chained dotted attribute: `one.two.three`.
|
||||
completeAttribute = (text) ->
|
||||
if match = text.match ACCESSOR
|
||||
[all, obj, prefix] = match
|
||||
try obj = Script.runInThisContext obj
|
||||
catch e
|
||||
return
|
||||
return unless obj?
|
||||
obj = Object obj
|
||||
candidates = Object.getOwnPropertyNames obj
|
||||
while obj = Object.getPrototypeOf obj
|
||||
for key in Object.getOwnPropertyNames obj when key not in candidates
|
||||
candidates.push key
|
||||
completions = getCompletions prefix, candidates
|
||||
[completions, prefix]
|
||||
|
||||
# Attempt to autocomplete an in-scope free variable: `one`.
|
||||
completeVariable = (text) ->
|
||||
free = text.match(SIMPLEVAR)?[1]
|
||||
free = "" if text is ""
|
||||
if free?
|
||||
vars = Script.runInThisContext 'Object.getOwnPropertyNames(Object(this))'
|
||||
keywords = (r for r in CoffeeScript.RESERVED when r[..1] isnt '__')
|
||||
candidates = vars
|
||||
for key in keywords when key not in candidates
|
||||
candidates.push key
|
||||
completions = getCompletions free, candidates
|
||||
[completions, free]
|
||||
|
||||
# Return elements of candidates for which `prefix` is a prefix.
|
||||
getCompletions = (prefix, candidates) ->
|
||||
el for el in candidates when 0 is el.indexOf prefix
|
||||
|
||||
# Make sure that uncaught exceptions don't kill the REPL.
|
||||
process.on 'uncaughtException', error
|
||||
|
||||
# The current backlog of multi-line code.
|
||||
backlog = ''
|
||||
|
||||
# The main REPL function. **run** is called every time a line of code is entered.
|
||||
# Attempt to evaluate the command. If there's an exception, print it out instead
|
||||
# of exiting.
|
||||
run = (buffer) ->
|
||||
# remove single-line comments
|
||||
buffer = buffer.replace /(^|[\r\n]+)(\s*)##?(?:[^#\r\n][^\r\n]*|)($|[\r\n])/, "$1$2$3"
|
||||
# remove trailing newlines
|
||||
buffer = buffer.replace /[\r\n]+$/, ""
|
||||
if multilineMode
|
||||
backlog += "#{buffer}\n"
|
||||
repl.setPrompt REPL_PROMPT_CONTINUATION
|
||||
repl.prompt()
|
||||
return
|
||||
if !buffer.toString().trim() and !backlog
|
||||
repl.prompt()
|
||||
return
|
||||
code = backlog += buffer
|
||||
if code[code.length - 1] is '\\'
|
||||
backlog = "#{backlog[...-1]}\n"
|
||||
repl.setPrompt REPL_PROMPT_CONTINUATION
|
||||
repl.prompt()
|
||||
return
|
||||
repl.setPrompt REPL_PROMPT
|
||||
backlog = ''
|
||||
try
|
||||
_ = global._
|
||||
returnValue = CoffeeScript.eval "_=(#{code}\n)", {
|
||||
filename: 'repl'
|
||||
modulename: 'repl'
|
||||
}
|
||||
if returnValue is undefined
|
||||
global._ = _
|
||||
repl.output.write "#{inspect returnValue, no, 2, enableColours}\n"
|
||||
catch err
|
||||
error err
|
||||
repl.prompt()
|
||||
|
||||
if stdin.readable and stdin.isRaw
|
||||
# handle piped input
|
||||
pipedInput = ''
|
||||
repl =
|
||||
prompt: -> stdout.write @_prompt
|
||||
setPrompt: (p) -> @_prompt = p
|
||||
input: stdin
|
||||
output: stdout
|
||||
on: ->
|
||||
stdin.on 'data', (chunk) ->
|
||||
pipedInput += chunk
|
||||
return unless /\n/.test pipedInput
|
||||
lines = pipedInput.split "\n"
|
||||
pipedInput = lines[lines.length - 1]
|
||||
for line in lines[...-1] when line
|
||||
stdout.write "#{line}\n"
|
||||
run line
|
||||
return
|
||||
stdin.on 'end', ->
|
||||
for line in pipedInput.trim().split "\n" when line
|
||||
stdout.write "#{line}\n"
|
||||
run line
|
||||
stdout.write '\n'
|
||||
process.exit 0
|
||||
else
|
||||
# Create the REPL by listening to **stdin**.
|
||||
if readline.createInterface.length < 3
|
||||
repl = readline.createInterface stdin, autocomplete
|
||||
stdin.on 'data', (buffer) -> repl.write buffer
|
||||
else
|
||||
repl = readline.createInterface stdin, stdout, autocomplete
|
||||
|
||||
multilineMode = off
|
||||
|
||||
# Handle multi-line mode switch
|
||||
repl.input.on 'keypress', (char, key) ->
|
||||
# test for Ctrl-v
|
||||
return unless key and key.ctrl and not key.meta and not key.shift and key.name is 'v'
|
||||
cursorPos = repl.cursor
|
||||
repl.output.cursorTo 0
|
||||
repl.output.clearLine 1
|
||||
multilineMode = not multilineMode
|
||||
repl._line() if not multilineMode and backlog
|
||||
backlog = ''
|
||||
repl.setPrompt (newPrompt = if multilineMode then REPL_PROMPT_MULTILINE else REPL_PROMPT)
|
||||
repl.prompt()
|
||||
repl.output.cursorTo newPrompt.length + (repl.cursor = cursorPos)
|
||||
|
||||
# Handle Ctrl-d press at end of last line in multiline mode
|
||||
repl.input.on 'keypress', (char, key) ->
|
||||
return unless multilineMode and repl.line
|
||||
# test for Ctrl-d
|
||||
return unless key and key.ctrl and not key.meta and not key.shift and key.name is 'd'
|
||||
multilineMode = off
|
||||
repl._line()
|
||||
|
||||
repl.on 'attemptClose', ->
|
||||
if multilineMode
|
||||
multilineMode = off
|
||||
repl.output.cursorTo 0
|
||||
repl.output.clearLine 1
|
||||
repl._onLine repl.line
|
||||
return
|
||||
if backlog or repl.line
|
||||
backlog = ''
|
||||
repl.historyIndex = -1
|
||||
repl.setPrompt REPL_PROMPT
|
||||
repl.output.write '\n(^C again to quit)'
|
||||
repl._line (repl.line = '')
|
||||
else
|
||||
repl.close()
|
||||
|
||||
repl.on 'close', ->
|
||||
repl.output.write '\n'
|
||||
repl.input.destroy()
|
||||
|
||||
repl.on 'line', run
|
||||
|
||||
repl.setPrompt REPL_PROMPT
|
||||
repl.prompt()
|
||||
module.exports =
|
||||
start: (opts = {}) ->
|
||||
repl.start merge(replDefaults, opts)
|
||||
|
||||
Reference in New Issue
Block a user