| // Copyright 2014 the V8 project authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| // |
| // Flags: --expose-debug-as debug |
| |
| Debug = debug.Debug |
| |
| var exception = false; |
| |
| function 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_set(num) { |
| print("element " + num); // Expected to step to this point. |
| return true; |
| } |
| |
| function cb_map(key, val) { |
| print("key " + key + ", value " + val); // Expected to step to this point. |
| return true; |
| } |
| |
| var s = new Set(); |
| s.add(1); |
| s.add(2); |
| s.add(3); |
| s.add(4); |
| |
| var m = new Map(); |
| m.set('foo', 1); |
| m.set('bar', 2); |
| m.set('baz', 3); |
| m.set('bat', 4); |
| |
| Debug.setListener(listener); |
| |
| var breaks = 0; |
| debugger; |
| s.forEach(cb_set); |
| assertFalse(exception); |
| assertEquals(4, breaks); |
| |
| breaks = 0; |
| debugger; |
| m.forEach(cb_map); |
| 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_set_foreach(num) { |
| s.forEach(cb_set); |
| print("back to the first level of recursion."); |
| } |
| |
| function cb_map_foreach(key, val) { |
| m.forEach(cb_set); |
| print("back to the first level of recursion."); |
| } |
| |
| Debug.setListener(second_level_listener); |
| |
| breaks = 0; |
| debugger; |
| s.forEach(cb_set_foreach); |
| assertFalse(exception); |
| assertEquals(17, breaks); |
| |
| breaks = 0; |
| debugger; |
| m.forEach(cb_map_foreach); |
| assertFalse(exception); |
| assertEquals(17, breaks); |
| |
| Debug.setListener(null); |