mirror of
https://github.com/nodejs/node.git
synced 2024-11-29 23:16:30 +01:00
1620 lines
37 KiB
JavaScript
1620 lines
37 KiB
JavaScript
// Copyright Joyent, Inc. and other Node contributors.
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//
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// Permission is hereby granted, free of charge, to any person obtaining a
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// copy of this software and associated documentation files (the
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// "Software"), to deal in the Software without restriction, including
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// without limitation the rights to use, copy, modify, merge, publish,
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// distribute, sublicense, and/or sell copies of the Software, and to permit
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// persons to whom the Software is furnished to do so, subject to the
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// following conditions:
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//
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// The above copyright notice and this permission notice shall be included
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// in all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
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// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
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// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
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// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
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// USE OR OTHER DEALINGS IN THE SOFTWARE.
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var util = require('util'),
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path = require('path'),
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net = require('net'),
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vm = require('vm'),
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repl = require('repl'),
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inherits = util.inherits,
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spawn = require('child_process').spawn;
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exports.start = function(argv, stdin, stdout) {
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argv || (argv = process.argv.slice(2));
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if (argv.length < 1) {
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console.error('Usage: node debug script.js');
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process.exit(1);
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}
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// Setup input/output streams
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stdin = stdin || process.openStdin();
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stdout = stdout || process.stdout;
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var args = ['--debug-brk'].concat(argv),
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interface = new Interface(stdin, stdout, args);
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stdin.resume();
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process.on('uncaughtException', function(e) {
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console.error("There was an internal error in Node's debugger. " +
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'Please report this bug.');
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console.error(e.message);
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console.error(e.stack);
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if (interface.child) interface.child.kill();
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process.exit(1);
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});
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};
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exports.port = 5858;
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//
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// Parser/Serializer for V8 debugger protocol
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// http://code.google.com/p/v8/wiki/DebuggerProtocol
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//
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// Usage:
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// p = new Protocol();
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//
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// p.onResponse = function(res) {
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// // do stuff with response from V8
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// };
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//
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// socket.setEncoding('utf8');
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// socket.on('data', function(s) {
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// // Pass strings into the protocol
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// p.execute(s);
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// });
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//
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//
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function Protocol() {
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this._newRes();
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}
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exports.Protocol = Protocol;
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Protocol.prototype._newRes = function(raw) {
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this.res = { raw: raw || '', headers: {} };
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this.state = 'headers';
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this.reqSeq = 1;
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this.execute('');
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};
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Protocol.prototype.execute = function(d) {
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var res = this.res;
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res.raw += d;
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switch (this.state) {
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case 'headers':
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var endHeaderIndex = res.raw.indexOf('\r\n\r\n');
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if (endHeaderIndex < 0) break;
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var rawHeader = res.raw.slice(0, endHeaderIndex);
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var endHeaderByteIndex = Buffer.byteLength(rawHeader, 'utf8');
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var lines = rawHeader.split('\r\n');
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for (var i = 0; i < lines.length; i++) {
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var kv = lines[i].split(/: +/);
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res.headers[kv[0]] = kv[1];
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}
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this.contentLength = +res.headers['Content-Length'];
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this.bodyStartByteIndex = endHeaderByteIndex + 4;
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this.state = 'body';
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if (Buffer.byteLength(res.raw, 'utf8') - this.bodyStartByteIndex
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< this.contentLength) {
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break;
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}
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// pass thru
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case 'body':
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var resRawByteLength = Buffer.byteLength(res.raw, 'utf8');
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if (resRawByteLength - this.bodyStartByteIndex >= this.contentLength) {
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var buf = new Buffer(resRawByteLength);
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buf.write(res.raw, 0, resRawByteLength, 'utf8');
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res.body =
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buf.slice(this.bodyStartByteIndex,
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this.bodyStartByteIndex
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+ this.contentLength).toString('utf8');
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// JSON parse body?
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res.body = res.body.length ? JSON.parse(res.body) : {};
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// Done!
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this.onResponse(res);
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this._newRes(buf.slice(this.bodyStartByteIndex
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+ this.contentLength).toString('utf8'));
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}
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break;
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default:
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throw new Error('Unknown state');
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break;
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}
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};
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Protocol.prototype.serialize = function(req) {
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req.type = 'request';
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req.seq = this.reqSeq++;
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var json = JSON.stringify(req);
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return 'Content-Length: ' + Buffer.byteLength(json,'utf8') + '\r\n\r\n'
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+ json;
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};
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var NO_FRAME = -1;
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function Client() {
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net.Stream.call(this);
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var protocol = this.protocol = new Protocol(this);
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this._reqCallbacks = [];
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var socket = this;
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this.currentFrame = NO_FRAME;
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this.currentSourceLine = -1;
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this.currentSource = null;
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this.handles = {};
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this.scripts = {};
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this.breakpoints = [];
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// Note that 'Protocol' requires strings instead of Buffers.
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socket.setEncoding('utf8');
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socket.on('data', function(d) {
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protocol.execute(d);
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});
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protocol.onResponse = this._onResponse.bind(this);
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}
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inherits(Client, net.Stream);
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exports.Client = Client;
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Client.prototype._addHandle = function(desc) {
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if (typeof desc != 'object' || typeof desc.handle != 'number') {
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return;
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}
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this.handles[desc.handle] = desc;
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if (desc.type == 'script') {
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this._addScript(desc);
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}
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};
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var natives = process.binding('natives');
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Client.prototype._addScript = function(desc) {
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this.scripts[desc.id] = desc;
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if (desc.name) {
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desc.isNative = (desc.name.replace('.js', '') in natives) ||
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desc.name == 'node.js';
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}
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};
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Client.prototype._removeScript = function(desc) {
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this.scripts[desc.id] = undefined;
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};
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Client.prototype._onResponse = function(res) {
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var cb,
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index = -1;
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this._reqCallbacks.some(function(fn, i) {
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if (fn.request_seq == res.body.request_seq) {
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cb = fn;
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index = i;
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return true;
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}
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});
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var self = this;
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var handled = false;
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if (res.headers.Type == 'connect') {
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// Request a list of scripts for our own storage.
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self.reqScripts();
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self.emit('ready');
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handled = true;
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} else if (res.body && res.body.event == 'break') {
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this.emit('break', res.body);
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handled = true;
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} else if (res.body && res.body.event == 'afterCompile') {
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this._addHandle(res.body.body.script);
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handled = true;
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} else if (res.body && res.body.event == 'scriptCollected') {
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// ???
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this._removeScript(res.body.body.script);
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handled = true;
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}
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if (cb) {
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this._reqCallbacks.splice(index, 1);
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handled = true;
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var err = res.success === false && (res.message || true) ||
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res.body.success === false && (res.body.message || true);
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cb(err, res.body && res.body.body || res.body, res);
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}
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if (!handled) this.emit('unhandledResponse', res.body);
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};
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Client.prototype.req = function(req, cb) {
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this.write(this.protocol.serialize(req));
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cb.request_seq = req.seq;
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this._reqCallbacks.push(cb);
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};
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Client.prototype.reqVersion = function(cb) {
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cb = cb || function() {};
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this.req({ command: 'version' } , function(err, body, res) {
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if (err) return cb(err);
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cb(null, res.body.body.V8Version, res.body.running);
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});
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};
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Client.prototype.reqLookup = function(refs, cb) {
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var self = this;
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// TODO: We have a cache of handle's we've already seen in this.handles
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// This can be used if we're careful.
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var req = {
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command: 'lookup',
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arguments: {
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handles: refs
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}
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};
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cb = cb || function() {};
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this.req(req, function(err, res) {
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if (err) return cb(err);
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for (var ref in res) {
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if (typeof res[ref] == 'object') {
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self._addHandle(res[ref]);
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}
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}
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cb(null, res);
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});
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};
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Client.prototype.reqScopes = function(cb) {
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var self = this,
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req = {
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command: 'scopes',
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arguments: {}
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};
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cb = cb || function() {};
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this.req(req, function(err, res) {
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if (err) return cb(err);
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var refs = res.scopes.map(function(scope) {
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return scope.object.ref;
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});
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self.reqLookup(refs, function(err, res) {
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if (err) return cb(err);
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var globals = Object.keys(res).map(function(key) {
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return res[key].properties.map(function(prop) {
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return prop.name;
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});
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});
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cb(null, globals.reverse());
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});
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});
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};
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// This is like reqEval, except it will look up the expression in each of the
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// scopes associated with the current frame.
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Client.prototype.reqEval = function(expression, cb) {
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var self = this;
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if (this.currentFrame == NO_FRAME) {
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// Only need to eval in global scope.
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this.reqFrameEval(expression, NO_FRAME, cb);
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return;
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}
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cb = cb || function() {};
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// Otherwise we need to get the current frame to see which scopes it has.
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this.reqBacktrace(function(err, bt) {
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if (err || !bt.frames) {
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// ??
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return cb(null, {});
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}
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var frame = bt.frames[self.currentFrame];
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var evalFrames = frame.scopes.map(function(s) {
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if (!s) return;
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var x = bt.frames[s.index];
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if (!x) return;
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return x.index;
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});
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self._reqFramesEval(expression, evalFrames, cb);
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});
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};
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// Finds the first scope in the array in which the epxression evals.
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Client.prototype._reqFramesEval = function(expression, evalFrames, cb) {
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if (evalFrames.length == 0) {
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// Just eval in global scope.
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this.reqFrameEval(expression, NO_FRAME, cb);
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return;
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}
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var self = this;
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var i = evalFrames.shift();
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cb = cb || function() {};
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this.reqFrameEval(expression, i, function(err, res) {
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if (!err) return cb(null, res);
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self._reqFramesEval(expression, evalFrames, cb);
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});
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};
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Client.prototype.reqFrameEval = function(expression, frame, cb) {
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var self = this;
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var req = {
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command: 'evaluate',
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arguments: { expression: expression }
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};
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if (frame == NO_FRAME) {
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req.arguments.global = true;
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} else {
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req.arguments.frame = frame;
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}
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cb = cb || function() {};
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this.req(req, function(err, res) {
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if (!err) self._addHandle(res);
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cb(err, res);
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});
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};
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// reqBacktrace(cb)
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// TODO: from, to, bottom
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Client.prototype.reqBacktrace = function(cb) {
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this.req({ command: 'backtrace' } , cb);
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};
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// Returns an array of objects like this:
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//
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// { handle: 11,
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// type: 'script',
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// name: 'node.js',
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// id: 14,
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// lineOffset: 0,
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// columnOffset: 0,
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// lineCount: 562,
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// sourceStart: '(function(process) {\n\n ',
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// sourceLength: 15939,
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// scriptType: 2,
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// compilationType: 0,
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// context: { ref: 10 },
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// text: 'node.js (lines: 562)' }
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//
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Client.prototype.reqScripts = function(cb) {
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var self = this;
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cb = cb || function() {};
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this.req({ command: 'scripts' } , function(err, res) {
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if (err) return cb(err);
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for (var i = 0; i < res.length; i++) {
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self._addHandle(res[i]);
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}
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cb(null);
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});
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};
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Client.prototype.reqContinue = function(cb) {
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this.currentFrame = NO_FRAME;
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this.req({ command: 'continue' }, cb);
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};
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Client.prototype.listbreakpoints = function(cb) {
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this.req({ command: 'listbreakpoints' }, cb);
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};
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Client.prototype.setBreakpoint = function(req, cb) {
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req = {
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command: 'setbreakpoint',
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arguments: req
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};
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this.req(req, cb);
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};
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Client.prototype.clearBreakpoint = function(req, cb) {
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var req = {
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command: 'clearbreakpoint',
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arguments: req
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};
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this.req(req, cb);
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};
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Client.prototype.reqSource = function(from, to, cb) {
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var req = {
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command: 'source',
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fromLine: from,
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toLine: to
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};
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this.req(req, cb);
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};
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// client.next(1, cb);
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Client.prototype.step = function(action, count, cb) {
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var req = {
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command: 'continue',
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arguments: { stepaction: action, stepcount: count }
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};
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this.currentFrame = NO_FRAME;
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this.req(req, cb);
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};
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Client.prototype.mirrorObject = function(handle, depth, cb) {
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var self = this;
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var val;
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if (handle.type == 'object') {
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// The handle looks something like this:
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// { handle: 8,
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// type: 'object',
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// className: 'Object',
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// constructorFunction: { ref: 9 },
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// protoObject: { ref: 4 },
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// prototypeObject: { ref: 2 },
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// properties: [ { name: 'hello', propertyType: 1, ref: 10 } ],
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// text: '#<an Object>' }
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// For now ignore the className and constructor and prototype.
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// TJ's method of object inspection would probably be good for this:
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// https://groups.google.com/forum/?pli=1#!topic/nodejs-dev/4gkWBOimiOg
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var propertyRefs = handle.properties.map(function(p) {
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return p.ref;
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});
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cb = cb || function() {};
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this.reqLookup(propertyRefs, function(err, res) {
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if (err) {
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console.error('problem with reqLookup');
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cb(null, handle);
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return;
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}
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var mirror,
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waiting = 1;
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if (handle.className == 'Array') {
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mirror = [];
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} else {
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mirror = {};
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}
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var keyValues = [];
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handle.properties.forEach(function(prop, i) {
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var value = res[prop.ref];
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var mirrorValue;
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if (value) {
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mirrorValue = value.value ? value.value : value.text;
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} else {
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mirrorValue = '[?]';
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}
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if (Array.isArray(mirror) &&
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typeof prop.name != 'number') {
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// Skip the 'length' property.
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return;
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}
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keyValues[i] = {
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name: prop.name,
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value: mirrorValue
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};
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if (value && value.handle && depth > 0) {
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waiting++;
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self.mirrorObject(value, depth - 1, function(err, result) {
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if (!err) keyValues[i].value = result;
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waitForOthers();
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});
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}
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});
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waitForOthers();
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function waitForOthers() {
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if (--waiting === 0 && cb) {
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keyValues.forEach(function(kv) {
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mirror[kv.name] = kv.value;
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});
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cb(null, mirror);
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}
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};
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});
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return;
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} else if (handle.type === 'function') {
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val = function() {};
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} else if (handle.type === 'null') {
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val = null;
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} else if (handle.value !== undefined) {
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val = handle.value;
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} else if (handle.type === 'undefined') {
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val = undefined;
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} else {
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val = handle;
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|
}
|
|
process.nextTick(function() {
|
|
cb(null, val);
|
|
});
|
|
};
|
|
|
|
|
|
Client.prototype.fullTrace = function(cb) {
|
|
var self = this;
|
|
|
|
cb = cb || function() {};
|
|
this.reqBacktrace(function(err, trace) {
|
|
if (err) return cb(err);
|
|
if (trace.totalFrames <= 0) return cb(Error('No frames'));
|
|
|
|
var refs = [];
|
|
|
|
for (var i = 0; i < trace.frames.length; i++) {
|
|
var frame = trace.frames[i];
|
|
// looks like this:
|
|
// { type: 'frame',
|
|
// index: 0,
|
|
// receiver: { ref: 1 },
|
|
// func: { ref: 0 },
|
|
// script: { ref: 7 },
|
|
// constructCall: false,
|
|
// atReturn: false,
|
|
// debuggerFrame: false,
|
|
// arguments: [],
|
|
// locals: [],
|
|
// position: 160,
|
|
// line: 7,
|
|
// column: 2,
|
|
// sourceLineText: ' debugger;',
|
|
// scopes: [ { type: 1, index: 0 }, { type: 0, index: 1 } ],
|
|
// text: '#00 blah() /home/ryan/projects/node/test-debug.js l...' }
|
|
refs.push(frame.script.ref);
|
|
refs.push(frame.func.ref);
|
|
refs.push(frame.receiver.ref);
|
|
}
|
|
|
|
self.reqLookup(refs, function(err, res) {
|
|
if (err) return cb(err);
|
|
|
|
for (var i = 0; i < trace.frames.length; i++) {
|
|
var frame = trace.frames[i];
|
|
frame.script = res[frame.script.ref];
|
|
frame.func = res[frame.func.ref];
|
|
frame.receiver = res[frame.receiver.ref];
|
|
}
|
|
|
|
cb(null, trace);
|
|
});
|
|
});
|
|
};
|
|
|
|
|
|
|
|
|
|
|
|
|
|
var commands = [
|
|
[
|
|
'run (r)',
|
|
'cont (c)',
|
|
'next (n)',
|
|
'step (s)',
|
|
'out (o)',
|
|
'backtrace (bt)',
|
|
'setBreakpoint (sb)',
|
|
'clearBreakpoint (cb)'
|
|
],
|
|
[
|
|
'watch',
|
|
'unwatch',
|
|
'watchers',
|
|
'repl',
|
|
'restart',
|
|
'kill',
|
|
'list',
|
|
'scripts',
|
|
'breakpoints',
|
|
'version'
|
|
]
|
|
];
|
|
|
|
|
|
var helpMessage = 'Commands: ' + commands.map(function(group) {
|
|
return group.join(', ');
|
|
}).join(',\n');
|
|
|
|
|
|
function SourceUnderline(sourceText, position, tty) {
|
|
if (!sourceText) return '';
|
|
|
|
var head = sourceText.slice(0, position),
|
|
tail = sourceText.slice(position);
|
|
|
|
// Colourize char if stdout supports colours
|
|
if (tty && !repl.disableColors) {
|
|
tail = tail.replace(/(.+?)([^\w]|$)/, '\033[32m$1\033[39m$2');
|
|
}
|
|
|
|
// Return source line with coloured char at `position`
|
|
return [
|
|
head,
|
|
tail
|
|
].join('');
|
|
}
|
|
|
|
|
|
function SourceInfo(body) {
|
|
var result = 'break in ';
|
|
|
|
if (body.script) {
|
|
if (body.script.name) {
|
|
var name = body.script.name,
|
|
dir = path.resolve() + '/';
|
|
|
|
// Change path to relative, if possible
|
|
if (name.indexOf(dir) === 0) {
|
|
name = name.slice(dir.length);
|
|
}
|
|
|
|
result += name;
|
|
} else {
|
|
result += '[unnamed]';
|
|
}
|
|
}
|
|
result += ':';
|
|
result += body.sourceLine + 1;
|
|
|
|
return result;
|
|
}
|
|
|
|
// This class is the repl-enabled debugger interface which is invoked on
|
|
// "node debug"
|
|
function Interface(stdin, stdout, args) {
|
|
var self = this,
|
|
child;
|
|
|
|
this.stdin = stdin;
|
|
this.stdout = stdout;
|
|
this.args = args;
|
|
|
|
var streams = {
|
|
stdin: stdin,
|
|
stdout: stdout
|
|
};
|
|
|
|
// Two eval modes are available: controlEval and debugEval
|
|
// But controlEval is used by default
|
|
this.repl = new repl.REPLServer('debug> ', streams,
|
|
this.controlEval.bind(this), false, true);
|
|
|
|
// Kill child process when repl closed or main process is dead
|
|
this.repl.rli.addListener('close', function() {
|
|
self.killed = true;
|
|
self.killChild();
|
|
});
|
|
|
|
process.on('exit', function() {
|
|
self.killChild();
|
|
});
|
|
|
|
|
|
var proto = Interface.prototype,
|
|
ignored = ['pause', 'resume', 'exitRepl', 'handleBreak',
|
|
'requireConnection', 'killChild', 'trySpawn',
|
|
'controlEval', 'debugEval', 'print', 'childPrint',
|
|
'clearline'],
|
|
shortcut = {
|
|
'run': 'r',
|
|
'cont': 'c',
|
|
'next': 'n',
|
|
'step': 's',
|
|
'out': 'o',
|
|
'backtrace': 'bt',
|
|
'setBreakpoint': 'sb',
|
|
'clearBreakpoint': 'cb'
|
|
};
|
|
|
|
function defineProperty(key, protoKey) {
|
|
// Check arity
|
|
var fn = proto[protoKey].bind(self);
|
|
|
|
if (proto[protoKey].length === 0) {
|
|
Object.defineProperty(self.repl.context, key, {
|
|
get: fn,
|
|
enumerable: true,
|
|
configurable: false
|
|
});
|
|
} else {
|
|
self.repl.context[key] = fn;
|
|
}
|
|
};
|
|
|
|
// Copy all prototype methods in repl context
|
|
// Setup them as getters if possible
|
|
for (var i in proto) {
|
|
if (Object.prototype.hasOwnProperty.call(proto, i) &&
|
|
ignored.indexOf(i) === -1) {
|
|
defineProperty(i, i);
|
|
if (shortcut[i]) defineProperty(shortcut[i], i);
|
|
}
|
|
}
|
|
|
|
this.killed = false;
|
|
this.waiting = null;
|
|
this.paused = 0;
|
|
this.context = this.repl.context;
|
|
this.history = {
|
|
debug: [],
|
|
control: []
|
|
};
|
|
this.breakpoints = [];
|
|
this._watchers = [];
|
|
|
|
// Run script automatically
|
|
this.pause();
|
|
|
|
// XXX Need to figure out why we need this delay
|
|
setTimeout(function() {
|
|
|
|
self.run(function() {
|
|
self.resume();
|
|
});
|
|
}, 10);
|
|
}
|
|
|
|
|
|
// Stream control
|
|
|
|
|
|
Interface.prototype.pause = function() {
|
|
if (this.killed || this.paused++ > 0) return false;
|
|
this.repl.rli.pause();
|
|
this.stdin.pause();
|
|
};
|
|
|
|
Interface.prototype.resume = function(silent) {
|
|
if (this.killed || this.paused === 0 || --this.paused !== 0) return false;
|
|
this.repl.rli.resume();
|
|
if (silent !== true) {
|
|
this.repl.displayPrompt();
|
|
}
|
|
this.stdin.resume();
|
|
|
|
if (this.waiting) {
|
|
this.waiting();
|
|
this.waiting = null;
|
|
}
|
|
};
|
|
|
|
|
|
// Clear current line
|
|
Interface.prototype.clearline = function() {
|
|
if (this.stdout.isTTY) {
|
|
this.stdout.cursorTo(0);
|
|
this.stdout.clearLine(1);
|
|
} else {
|
|
this.stdout.write('\b');
|
|
}
|
|
};
|
|
|
|
// Print text to output stream
|
|
Interface.prototype.print = function(text, oneline) {
|
|
if (this.killed) return;
|
|
this.clearline();
|
|
|
|
this.stdout.write(typeof text === 'string' ? text : util.inspect(text));
|
|
|
|
if (oneline !== true) {
|
|
this.stdout.write('\n');
|
|
}
|
|
};
|
|
|
|
// Format and print text from child process
|
|
Interface.prototype.childPrint = function(text) {
|
|
this.print(text.toString().split(/\r\n|\r|\n/g).filter(function(chunk) {
|
|
return chunk;
|
|
}).map(function(chunk) {
|
|
return '< ' + chunk;
|
|
}).join('\n'));
|
|
this.repl.displayPrompt();
|
|
};
|
|
|
|
// Errors formatting
|
|
Interface.prototype.error = function(text) {
|
|
this.print(text);
|
|
this.resume();
|
|
};
|
|
|
|
|
|
// Debugger's `break` event handler
|
|
Interface.prototype.handleBreak = function(r) {
|
|
var self = this;
|
|
|
|
this.pause();
|
|
|
|
// Save execution context's data
|
|
this.client.currentSourceLine = r.sourceLine;
|
|
this.client.currentSourceLineText = r.sourceLineText;
|
|
this.client.currentSourceColumn = r.sourceColumn;
|
|
this.client.currentFrame = 0;
|
|
this.client.currentScript = r.script && r.script.name;
|
|
|
|
// Print break data
|
|
this.print(SourceInfo(r));
|
|
|
|
// Show watchers' values
|
|
this.watchers(true, function(err) {
|
|
if (err) return self.error(err);
|
|
|
|
// And list source
|
|
self.list(2);
|
|
|
|
self.resume(true);
|
|
});
|
|
};
|
|
|
|
|
|
// Internal method for checking connection state
|
|
Interface.prototype.requireConnection = function() {
|
|
if (!this.client) {
|
|
this.error('App isn\'t running... Try `run` instead');
|
|
return false;
|
|
}
|
|
return true;
|
|
};
|
|
|
|
|
|
// Evals
|
|
|
|
// Used for debugger's commands evaluation and execution
|
|
Interface.prototype.controlEval = function(code, context, filename, callback) {
|
|
try {
|
|
// Repeat last command if empty line are going to be evaluated
|
|
if (this.repl.rli.history && this.repl.rli.history.length > 0) {
|
|
if (code === '(undefined\n)') {
|
|
code = '(' + this.repl.rli.history[0] + '\n)';
|
|
}
|
|
}
|
|
|
|
var result = vm.runInContext(code, context, filename);
|
|
|
|
// Repl should not ask for next command
|
|
// if current one was asynchronous.
|
|
if (this.paused === 0) return callback(null, result);
|
|
|
|
// Add a callback for asynchronous command
|
|
// (it will be automatically invoked by .resume() method
|
|
this.waiting = function() {
|
|
callback(null, result);
|
|
};
|
|
} catch (e) {
|
|
callback(e);
|
|
}
|
|
};
|
|
|
|
// Used for debugger's remote evaluation (`repl`) commands
|
|
Interface.prototype.debugEval = function(code, context, filename, callback) {
|
|
if (!this.requireConnection()) return;
|
|
|
|
var self = this,
|
|
client = this.client;
|
|
|
|
// Repl asked for scope variables
|
|
if (code === '.scope') {
|
|
client.reqScopes(callback);
|
|
return;
|
|
}
|
|
|
|
var frame = client.currentFrame === NO_FRAME ? frame : undefined;
|
|
|
|
self.pause();
|
|
|
|
// Request remote evaluation globally or in current frame
|
|
client.reqFrameEval(code, frame, function(err, res) {
|
|
if (err) {
|
|
callback(err);
|
|
self.resume(true);
|
|
return;
|
|
}
|
|
|
|
// Request object by handles (and it's sub-properties)
|
|
client.mirrorObject(res, 3, function(err, mirror) {
|
|
callback(null, mirror);
|
|
self.resume(true);
|
|
});
|
|
});
|
|
};
|
|
|
|
|
|
// Utils
|
|
|
|
// Returns number of digits (+1)
|
|
function intChars(n) {
|
|
// TODO dumb:
|
|
if (n < 50) {
|
|
return 3;
|
|
} else if (n < 950) {
|
|
return 4;
|
|
} else if (n < 9950) {
|
|
return 5;
|
|
} else {
|
|
return 6;
|
|
}
|
|
}
|
|
|
|
// Adds spaces and prefix to number
|
|
function leftPad(n, prefix) {
|
|
var s = n.toString(),
|
|
nchars = intChars(n),
|
|
nspaces = nchars - s.length - 1;
|
|
|
|
prefix || (prefix = ' ');
|
|
|
|
for (var i = 0; i < nspaces; i++) {
|
|
prefix += ' ';
|
|
}
|
|
|
|
return prefix + s;
|
|
}
|
|
|
|
|
|
// Commands
|
|
|
|
|
|
// Print help message
|
|
Interface.prototype.help = function() {
|
|
this.print(helpMessage);
|
|
};
|
|
|
|
|
|
// Run script
|
|
Interface.prototype.run = function() {
|
|
var callback = arguments[0];
|
|
|
|
if (this.child) {
|
|
this.error('App is already running... Try `restart` instead');
|
|
callback && callback(true);
|
|
} else {
|
|
this.trySpawn(callback);
|
|
}
|
|
};
|
|
|
|
|
|
// Restart script
|
|
Interface.prototype.restart = function() {
|
|
if (!this.requireConnection()) return;
|
|
|
|
var self = this;
|
|
|
|
self.pause();
|
|
self.killChild();
|
|
|
|
// XXX need to wait a little bit for the restart to work?
|
|
setTimeout(function() {
|
|
self.trySpawn();
|
|
self.resume();
|
|
}, 1000);
|
|
};
|
|
|
|
|
|
// Print version
|
|
Interface.prototype.version = function() {
|
|
if (!this.requireConnection()) return;
|
|
|
|
var self = this;
|
|
|
|
this.pause();
|
|
this.client.reqVersion(function(err, v) {
|
|
if (err) {
|
|
self.error(err);
|
|
} else {
|
|
self.print(v);
|
|
}
|
|
self.resume();
|
|
});
|
|
};
|
|
|
|
// List source code
|
|
Interface.prototype.list = function(delta) {
|
|
if (!this.requireConnection()) return;
|
|
|
|
delta || (delta = 5);
|
|
|
|
var self = this,
|
|
client = this.client,
|
|
from = client.currentSourceLine - delta + 1,
|
|
to = client.currentSourceLine + delta + 1;
|
|
|
|
self.pause();
|
|
client.reqSource(from, to, function(err, res) {
|
|
if (err || !res) {
|
|
self.error('You can\'t list source code right now');
|
|
self.resume();
|
|
return;
|
|
}
|
|
|
|
var lines = res.source.split('\n');
|
|
for (var i = 0; i < lines.length; i++) {
|
|
var lineno = res.fromLine + i + 1;
|
|
if (lineno < from || lineno > to) continue;
|
|
|
|
var current = lineno == 1 + client.currentSourceLine,
|
|
breakpoint = client.breakpoints.some(function(bp) {
|
|
return bp.script === client.currentScript &&
|
|
bp.line == lineno;
|
|
});
|
|
|
|
if (lineno == 1) {
|
|
// The first line needs to have the module wrapper filtered out of
|
|
// it.
|
|
var wrapper = require('module').wrapper[0];
|
|
lines[i] = lines[i].slice(wrapper.length);
|
|
|
|
client.currentSourceColumn -= wrapper.length;
|
|
}
|
|
|
|
// Highlight executing statement
|
|
var line;
|
|
if (current) {
|
|
line = SourceUnderline(lines[i],
|
|
client.currentSourceColumn,
|
|
self.stdout.isTTY);
|
|
} else {
|
|
line = lines[i];
|
|
}
|
|
|
|
self.print(leftPad(lineno, breakpoint && '*') + ' ' + line);
|
|
}
|
|
self.resume();
|
|
});
|
|
};
|
|
|
|
// Print backtrace
|
|
Interface.prototype.backtrace = function() {
|
|
if (!this.requireConnection()) return;
|
|
|
|
var self = this,
|
|
client = this.client;
|
|
|
|
self.pause();
|
|
client.fullTrace(function(err, bt) {
|
|
if (err) {
|
|
self.error('Can\'t request backtrace now');
|
|
self.resume();
|
|
return;
|
|
}
|
|
|
|
if (bt.totalFrames == 0) {
|
|
self.print('(empty stack)');
|
|
} else {
|
|
var trace = [],
|
|
firstFrameNative = bt.frames[0].script.isNative;
|
|
|
|
for (var i = 0; i < bt.frames.length; i++) {
|
|
var frame = bt.frames[i];
|
|
if (!firstFrameNative && frame.script.isNative) break;
|
|
|
|
var text = '#' + i + ' ';
|
|
if (frame.func.inferredName && frame.func.inferredName.length > 0) {
|
|
text += frame.func.inferredName + ' ';
|
|
}
|
|
text += path.basename(frame.script.name) + ':';
|
|
text += (frame.line + 1) + ':' + (frame.column + 1);
|
|
|
|
trace.push(text);
|
|
}
|
|
|
|
self.print(trace.join('\n'));
|
|
}
|
|
|
|
self.resume();
|
|
});
|
|
};
|
|
|
|
|
|
// First argument tells if it should display internal node scripts or not
|
|
// (available only for internal debugger's functions)
|
|
Interface.prototype.scripts = function() {
|
|
if (!this.requireConnection()) return;
|
|
|
|
var client = this.client,
|
|
displayNatives = arguments[0] || false,
|
|
scripts = [];
|
|
|
|
this.pause();
|
|
for (var id in client.scripts) {
|
|
var script = client.scripts[id];
|
|
if (typeof script == 'object' && script.name) {
|
|
if (displayNatives ||
|
|
script.name == client.currentScript ||
|
|
!script.isNative) {
|
|
scripts.push(
|
|
(script.name == client.currentScript ? '* ' : ' ') +
|
|
id + ': ' +
|
|
path.basename(script.name)
|
|
);
|
|
}
|
|
}
|
|
}
|
|
this.print(scripts.join('\n'));
|
|
this.resume();
|
|
};
|
|
|
|
|
|
// Continue execution of script
|
|
Interface.prototype.cont = function() {
|
|
if (!this.requireConnection()) return;
|
|
this.pause();
|
|
|
|
var self = this;
|
|
this.client.reqContinue(function(err) {
|
|
if (err) self.error(err);
|
|
self.resume();
|
|
});
|
|
};
|
|
|
|
|
|
// Step commands generator
|
|
Interface.stepGenerator = function(type, count) {
|
|
return function() {
|
|
if (!this.requireConnection()) return;
|
|
|
|
var self = this;
|
|
|
|
self.pause();
|
|
self.client.step(type, count, function(err, res) {
|
|
if (err) self.error(err);
|
|
self.resume();
|
|
});
|
|
};
|
|
};
|
|
|
|
|
|
// Jump to next command
|
|
Interface.prototype.next = Interface.stepGenerator('next', 1);
|
|
|
|
|
|
// Step in
|
|
Interface.prototype.step = Interface.stepGenerator('in', 1);
|
|
|
|
|
|
// Step out
|
|
Interface.prototype.out = Interface.stepGenerator('out', 1);
|
|
|
|
|
|
// Watch
|
|
Interface.prototype.watch = function(expr) {
|
|
this._watchers.push(expr);
|
|
};
|
|
|
|
// Unwatch
|
|
Interface.prototype.unwatch = function(expr) {
|
|
var index = this._watchers.indexOf(expr);
|
|
|
|
// Unwatch by expression
|
|
// or
|
|
// Unwatch by watcher number
|
|
this._watchers.splice(index !== -1 ? index : +expr, 1);
|
|
};
|
|
|
|
// List watchers
|
|
Interface.prototype.watchers = function() {
|
|
var self = this,
|
|
verbose = arguments[0] || false,
|
|
callback = arguments[1] || function() {},
|
|
waiting = this._watchers.length,
|
|
values = [];
|
|
|
|
this.pause();
|
|
|
|
if (!waiting) {
|
|
this.resume();
|
|
|
|
return callback();
|
|
}
|
|
|
|
this._watchers.forEach(function(watcher, i) {
|
|
self.debugEval(watcher, null, null, function(err, value) {
|
|
values[i] = err ? '<error>' : value;
|
|
wait();
|
|
});
|
|
});
|
|
|
|
function wait() {
|
|
if (--waiting === 0) {
|
|
if (verbose) self.print('Watchers:');
|
|
|
|
self._watchers.forEach(function(watcher, i) {
|
|
self.print(leftPad(i, ' ') + ': ' + watcher + ' = ' +
|
|
JSON.stringify(values[i]));
|
|
});
|
|
|
|
if (verbose) self.print('');
|
|
|
|
self.resume();
|
|
|
|
callback(null);
|
|
}
|
|
}
|
|
};
|
|
|
|
// Add breakpoint
|
|
Interface.prototype.setBreakpoint = function(script, line,
|
|
condition, silent) {
|
|
if (!this.requireConnection()) return;
|
|
|
|
var self = this,
|
|
scriptId,
|
|
ambiguous;
|
|
|
|
// setBreakpoint() should insert breakpoint on current line
|
|
if (script === undefined) {
|
|
script = this.client.currentScript;
|
|
line = this.client.currentSourceLine + 1;
|
|
}
|
|
|
|
if (/\(\)$/.test(script)) {
|
|
// setBreakpoint('functionname()');
|
|
var req = {
|
|
type: 'function',
|
|
target: script.replace(/\(\)$/, ''),
|
|
condition: condition
|
|
};
|
|
} else {
|
|
// setBreakpoint('scriptname')
|
|
if (script != +script && !this.client.scripts[script]) {
|
|
var scripts = this.client.scripts;
|
|
Object.keys(scripts).forEach(function(id) {
|
|
if (scripts[id] && scripts[id].name.indexOf(script) !== -1) {
|
|
if (scriptId) {
|
|
ambiguous = true;
|
|
}
|
|
scriptId = id;
|
|
}
|
|
});
|
|
} else {
|
|
scriptId = script;
|
|
}
|
|
|
|
if (!scriptId) return this.error('Script : ' + script + ' not found');
|
|
if (ambiguous) return this.error('Script name is ambiguous');
|
|
if (line <= 0) return this.error('Line should be a positive value');
|
|
|
|
var req = {
|
|
type: 'scriptId',
|
|
target: scriptId,
|
|
line: line - 1,
|
|
condition: condition
|
|
};
|
|
}
|
|
|
|
self.pause();
|
|
self.client.setBreakpoint(req, function(err, res) {
|
|
if (err) {
|
|
if (!silent) {
|
|
self.error(err);
|
|
}
|
|
} else {
|
|
if (!silent) {
|
|
self.list(5);
|
|
}
|
|
|
|
// Try load scriptId and line from response
|
|
if (!scriptId) {
|
|
scriptId = res.script_id;
|
|
line = res.line;
|
|
}
|
|
|
|
// If we finally have one - remember this breakpoint
|
|
if (scriptId) {
|
|
self.client.breakpoints.push({
|
|
id: res.breakpoint,
|
|
scriptId: scriptId,
|
|
script: (self.client.scripts[scriptId] || {}).name,
|
|
line: line,
|
|
condition: condition
|
|
});
|
|
}
|
|
|
|
}
|
|
self.resume();
|
|
});
|
|
};
|
|
|
|
// Clear breakpoint
|
|
Interface.prototype.clearBreakpoint = function(script, line) {
|
|
if (!this.requireConnection()) return;
|
|
|
|
var ambiguous,
|
|
breakpoint,
|
|
index;
|
|
|
|
this.client.breakpoints.some(function(bp, i) {
|
|
if (bp.scriptId === script || bp.script.indexOf(script) !== -1) {
|
|
if (index !== undefined) {
|
|
ambiguous = true;
|
|
}
|
|
if (bp.line === line) {
|
|
index = i;
|
|
breakpoint = bp.id;
|
|
return true;
|
|
}
|
|
}
|
|
});
|
|
|
|
if (ambiguous) return this.error('Script name is ambiguous');
|
|
|
|
if (breakpoint === undefined) {
|
|
return this.error('Script : ' + script + ' not found');
|
|
}
|
|
|
|
var self = this,
|
|
req = {
|
|
breakpoint: breakpoint
|
|
};
|
|
|
|
self.pause();
|
|
self.client.clearBreakpoint(req, function(err, res) {
|
|
if (err) {
|
|
self.error(err);
|
|
} else {
|
|
self.client.breakpoints.splice(index, 1);
|
|
self.list(5);
|
|
}
|
|
self.resume();
|
|
});
|
|
};
|
|
|
|
|
|
// Show breakpoints
|
|
Interface.prototype.breakpoints = function() {
|
|
if (!this.requireConnection()) return;
|
|
|
|
this.pause();
|
|
var self = this;
|
|
this.client.listbreakpoints(function(err, res) {
|
|
if (err) {
|
|
self.error(err);
|
|
} else {
|
|
self.print(res);
|
|
self.resume();
|
|
}
|
|
});
|
|
};
|
|
|
|
|
|
// Kill child process
|
|
Interface.prototype.kill = function() {
|
|
if (!this.child) return;
|
|
this.killChild();
|
|
};
|
|
|
|
|
|
// Activate debug repl
|
|
Interface.prototype.repl = function() {
|
|
if (!this.requireConnection()) return;
|
|
|
|
var self = this;
|
|
|
|
self.print('Press Ctrl + C to leave debug repl');
|
|
|
|
// Don't display any default messages
|
|
var listeners = this.repl.rli.listeners('SIGINT');
|
|
this.repl.rli.removeAllListeners('SIGINT');
|
|
|
|
// Exit debug repl on Ctrl + C
|
|
this.repl.rli.once('SIGINT', function() {
|
|
// Restore all listeners
|
|
process.nextTick(function() {
|
|
listeners.forEach(function(listener) {
|
|
self.repl.rli.on('SIGINT', listener);
|
|
});
|
|
});
|
|
|
|
// Exit debug repl
|
|
self.exitRepl();
|
|
});
|
|
|
|
// Set new
|
|
this.repl.eval = this.debugEval.bind(this);
|
|
this.repl.context = {};
|
|
|
|
// Swap history
|
|
this.history.control = this.repl.rli.history;
|
|
this.repl.rli.history = this.history.debug;
|
|
|
|
this.repl.prompt = '> ';
|
|
this.repl.rli.setPrompt('> ');
|
|
this.repl.displayPrompt();
|
|
};
|
|
|
|
|
|
// Exit debug repl
|
|
Interface.prototype.exitRepl = function() {
|
|
// Restore eval
|
|
this.repl.eval = this.controlEval.bind(this);
|
|
|
|
// Swap history
|
|
this.history.debug = this.repl.rli.history;
|
|
this.repl.rli.history = this.history.control;
|
|
|
|
this.repl.context = this.context;
|
|
this.repl.prompt = 'debug> ';
|
|
this.repl.rli.setPrompt('debug> ');
|
|
this.repl.displayPrompt();
|
|
};
|
|
|
|
|
|
// Quit
|
|
Interface.prototype.quit = function() {
|
|
this.killChild();
|
|
process.exit(0);
|
|
};
|
|
|
|
|
|
// Kills child process
|
|
Interface.prototype.killChild = function() {
|
|
if (this.child) {
|
|
this.child.kill();
|
|
this.child = null;
|
|
}
|
|
|
|
if (this.client) {
|
|
// Save breakpoints
|
|
this.breakpoints = this.client.breakpoints;
|
|
|
|
this.client.destroy();
|
|
this.client = null;
|
|
}
|
|
};
|
|
|
|
|
|
// Spawns child process (and restores breakpoints)
|
|
Interface.prototype.trySpawn = function(cb) {
|
|
var self = this,
|
|
breakpoints = this.breakpoints || [],
|
|
port = exports.port,
|
|
host = 'localhost';
|
|
|
|
this.killChild();
|
|
|
|
// Connecting to remote debugger
|
|
// `node debug localhost:5858`
|
|
if (this.args.length === 2) {
|
|
var match = this.args[1].match(/^([^:]+):(\d+)$/);
|
|
if (match) {
|
|
host = match[1];
|
|
port = parseInt(match[2], 10);
|
|
this.child = {
|
|
kill: function() {
|
|
// TODO Do we really need to handle it?
|
|
}
|
|
};
|
|
}
|
|
} else if (this.args.length === 3) {
|
|
// `node debug -p pid`
|
|
if (this.args[1] === '-p' && /^\d+$/.test(this.args[2])) {
|
|
this.child = {
|
|
kill: function() {
|
|
// TODO Do we really need to handle it?
|
|
}
|
|
};
|
|
process._debugProcess(parseInt(this.args[2], 10));
|
|
}
|
|
}
|
|
|
|
if (!this.child) {
|
|
this.child = spawn(process.execPath, this.args);
|
|
|
|
this.child.stdout.on('data', this.childPrint.bind(this));
|
|
this.child.stderr.on('data', this.childPrint.bind(this));
|
|
}
|
|
|
|
this.pause();
|
|
|
|
var client = self.client = new Client(),
|
|
connectionAttempts = 0;
|
|
|
|
client.once('ready', function() {
|
|
self.stdout.write(' ok\n');
|
|
|
|
// Restore breakpoints
|
|
breakpoints.forEach(function(bp) {
|
|
self.setBreakpoint(bp.scriptId, bp.line, bp.condition, true);
|
|
});
|
|
|
|
if (cb) cb();
|
|
|
|
self.resume();
|
|
|
|
client.on('close', function() {
|
|
self.pause();
|
|
self.print('program terminated');
|
|
self.resume();
|
|
self.client = null;
|
|
self.killChild();
|
|
});
|
|
});
|
|
|
|
client.on('unhandledResponse', function(res) {
|
|
self.pause();
|
|
self.print('\nunhandled res:' + JSON.stringify(res));
|
|
self.resume();
|
|
});
|
|
|
|
client.on('break', function(res) {
|
|
self.handleBreak(res.body);
|
|
});
|
|
|
|
client.on('error', connectError);
|
|
function connectError() {
|
|
// If it's failed to connect 4 times then don't catch the next error
|
|
if (connectionAttempts >= 10) {
|
|
client.removeListener('error', connectError);
|
|
}
|
|
setTimeout(attemptConnect, 500);
|
|
}
|
|
|
|
function attemptConnect() {
|
|
++connectionAttempts;
|
|
self.stdout.write('.');
|
|
client.connect(port, host);
|
|
}
|
|
|
|
setTimeout(function() {
|
|
self.print('connecting..', true);
|
|
attemptConnect();
|
|
}, 50);
|
|
};
|