JezK
Edit File: debug-backtrace-text.js
// Copyright 2008 the V8 project authors. All rights reserved. // Redistribution and use in source and binary forms, with or without // modification, are permitted provided that the following conditions are // met: // // * Redistributions of source code must retain the above copyright // notice, this list of conditions and the following disclaimer. // * Redistributions in binary form must reproduce the above // copyright notice, this list of conditions and the following // disclaimer in the documentation and/or other materials provided // with the distribution. // * Neither the name of Google Inc. nor the names of its // contributors may be used to endorse or promote products derived // from this software without specific prior written permission. // // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. // Flags: --expose-debug-as debug // The functions used for testing backtraces. function Point(x, y) { this.x = x; this.y = y; }; Point.prototype.distanceTo = function(p) { debugger; return Math.sqrt(Math.pow(Math.abs(this.x - p.x), 2) + Math.pow(Math.abs(this.y - p.y), 2)) } p1 = new Point(1,1); p2 = new Point(2,2); p1.distanceTo = function(p) { return p.distanceTo(this); } function distance(p, q) { return p.distanceTo(q); } function createPoint(x, y) { return new Point(x, y); } a=[1,2,distance]; // Get the Debug object exposed from the debug context global object. Debug = debug.Debug testConstructor = false; // Flag to control which part of the test is run. listenerCalled = false; exception = false; function safeEval(code) { try { return eval('(' + code + ')'); } catch (e) { return undefined; } } function listener(event, exec_state, event_data, data) { try { if (event == Debug.DebugEvent.Break) { if (!testConstructor) { // The expected backtrace is // 0: Call distance on Point where distance is a property on the prototype // 1: Call distance on Point where distance is a direct property // 2: Call on function an array element 2 // 3: [anonymous] assertEquals("#<Point>.distanceTo(p=#<Point>)", exec_state.frame(0).invocationText()); assertEquals("#<Point>.distanceTo(p=#<Point>)", exec_state.frame(1).invocationText()); assertEquals("#<Array>[2](aka distance)(p=#<Point>, q=#<Point>)", exec_state.frame(2).invocationText()); assertEquals("[anonymous]()", exec_state.frame(3).invocationText()); listenerCalled = true; } else { // The expected backtrace is // 0: Call Point constructor // 1: Call on global function createPoint // 2: [anonymous] assertEquals("new Point(x=0, y=0)", exec_state.frame(0).invocationText()); assertEquals("createPoint(x=0, y=0)", exec_state.frame(1).invocationText()); assertEquals("[anonymous]()", exec_state.frame(2).invocationText()); listenerCalled = true; } } } catch (e) { exception = e }; }; // Add the debug event listener. Debug.setListener(listener); // Set a break point and call to invoke the debug event listener. a[2](p1, p2) // Make sure that the debug event listener vas invoked. assertTrue(listenerCalled); assertFalse(exception, "exception in listener") // Set a break point and call to invoke the debug event listener. listenerCalled = false; testConstructor = true; Debug.setBreakPoint(Point, 0, 0); createPoint(0, 0); // Make sure that the debug event listener vas invoked (again). assertTrue(listenerCalled); assertFalse(exception, "exception in listener")