| // Copyright 2012 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 |
| |
| // Test stepping into callbacks passed to builtin functions. |
| |
| Debug = debug.Debug |
| |
| var exception = false; |
| |
| function array_listener(event, exec_state, event_data, data) { |
| try { |
| if (event == Debug.DebugEvent.Break) { |
| if (breaks == 0) { |
| exec_state.prepareStep(Debug.StepAction.StepIn, 2); |
| breaks = 1; |
| } else if (breaks <= 3) { |
| breaks++; |
| // Check whether we break at the expected line. |
| print(event_data.sourceLineText()); |
| assertTrue(event_data.sourceLineText().indexOf("Expected to step") > 0); |
| exec_state.prepareStep(Debug.StepAction.StepIn, 3); |
| } |
| } |
| } catch (e) { |
| exception = true; |
| } |
| }; |
| |
| function cb_false(num) { |
| print("element " + num); // Expected to step to this point. |
| return false; |
| } |
| |
| function cb_true(num) { |
| print("element " + num); // Expected to step to this point. |
| return true; |
| } |
| |
| function cb_reduce(a, b) { |
| print("elements " + a + " and " + b); // Expected to step to this point. |
| return a + b; |
| } |
| |
| var a = [1, 2, 3, 4]; |
| |
| Debug.setListener(array_listener); |
| |
| var breaks = 0; |
| debugger; |
| a.forEach(cb_true); |
| assertFalse(exception); |
| assertEquals(4, breaks); |
| |
| breaks = 0; |
| debugger; |
| a.some(cb_false); |
| assertFalse(exception); |
| assertEquals(4, breaks); |
| |
| breaks = 0; |
| debugger; |
| a.every(cb_true); |
| assertEquals(4, breaks); |
| assertFalse(exception); |
| |
| breaks = 0; |
| debugger; |
| a.map(cb_true); |
| assertFalse(exception); |
| assertEquals(4, breaks); |
| |
| breaks = 0; |
| debugger; |
| a.filter(cb_true); |
| assertFalse(exception); |
| assertEquals(4, breaks); |
| |
| breaks = 0; |
| debugger; |
| a.reduce(cb_reduce); |
| assertFalse(exception); |
| assertEquals(4, breaks); |
| |
| breaks = 0; |
| debugger; |
| a.reduceRight(cb_reduce); |
| assertFalse(exception); |
| assertEquals(4, breaks); |
| |
| Debug.setListener(null); |
| |
| |
| // Test two levels of builtin callbacks: |
| // Array.forEach calls a callback function, which by itself uses |
| // Array.forEach with another callback function. |
| |
| function second_level_listener(event, exec_state, event_data, data) { |
| try { |
| if (event == Debug.DebugEvent.Break) { |
| if (breaks == 0) { |
| exec_state.prepareStep(Debug.StepAction.StepIn, 3); |
| breaks = 1; |
| } else if (breaks <= 16) { |
| breaks++; |
| // Check whether we break at the expected line. |
| assertTrue(event_data.sourceLineText().indexOf("Expected to step") > 0); |
| // Step two steps further every four breaks to skip the |
| // forEach call in the first level of recurision. |
| var step = (breaks % 4 == 1) ? 6 : 3; |
| exec_state.prepareStep(Debug.StepAction.StepIn, step); |
| } |
| } |
| } catch (e) { |
| exception = true; |
| } |
| }; |
| |
| function cb_foreach(num) { |
| a.forEach(cb_true); |
| print("back to the first level of recursion."); |
| } |
| |
| Debug.setListener(second_level_listener); |
| |
| breaks = 0; |
| debugger; |
| a.forEach(cb_foreach); |
| assertFalse(exception); |
| assertEquals(17, breaks); |
| |
| Debug.setListener(null); |