Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1 | // Copyright 2008 the V8 project authors. All rights reserved. |
| 2 | // Redistribution and use in source and binary forms, with or without |
| 3 | // modification, are permitted provided that the following conditions are |
| 4 | // met: |
| 5 | // |
| 6 | // * Redistributions of source code must retain the above copyright |
| 7 | // notice, this list of conditions and the following disclaimer. |
| 8 | // * Redistributions in binary form must reproduce the above |
| 9 | // copyright notice, this list of conditions and the following |
| 10 | // disclaimer in the documentation and/or other materials provided |
| 11 | // with the distribution. |
| 12 | // * Neither the name of Google Inc. nor the names of its |
| 13 | // contributors may be used to endorse or promote products derived |
| 14 | // from this software without specific prior written permission. |
| 15 | // |
| 16 | // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| 17 | // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| 18 | // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| 19 | // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| 20 | // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| 21 | // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| 22 | // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| 23 | // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| 24 | // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 25 | // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| 26 | // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 27 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 28 | // Flags: --expose-debug-as debug --debug-eval-readonly-locals |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 29 | // Get the Debug object exposed from the debug context global object. |
| 30 | Debug = debug.Debug |
| 31 | |
| 32 | listenerComplete = false; |
| 33 | exception = false; |
| 34 | |
| 35 | |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 36 | function h() { |
| 37 | var a = 1; |
| 38 | var b = 2; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 39 | var eval = 5; // Overriding eval should not break anything. |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 40 | debugger; // Breakpoint. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 41 | return a; |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 42 | } |
| 43 | |
| 44 | function checkFrame0(frame) { |
| 45 | // Frame 0 (h) has normal variables a and b. |
| 46 | var count = frame.localCount(); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 47 | assertEquals(3, count); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 48 | for (var i = 0; i < count; ++i) { |
| 49 | var name = frame.localName(i); |
| 50 | var value = frame.localValue(i).value(); |
| 51 | if (name == 'a') { |
| 52 | assertEquals(1, value); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 53 | } else if (name !='eval') { |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 54 | assertEquals('b', name); |
| 55 | assertEquals(2, value); |
| 56 | } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 57 | } |
| 58 | } |
| 59 | |
| 60 | |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 61 | function g() { |
| 62 | var a = 3; |
| 63 | eval("var b = 4;"); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 64 | return h() + a; |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 65 | } |
| 66 | |
| 67 | function checkFrame1(frame) { |
| 68 | // Frame 1 (g) has normal variable a (and arguments). |
| 69 | var count = frame.localCount(); |
| 70 | assertEquals(2, count); |
| 71 | for (var i = 0; i < count; ++i) { |
| 72 | var name = frame.localName(i); |
| 73 | var value = frame.localValue(i).value(); |
| 74 | if (name == 'a') { |
| 75 | assertEquals(3, value); |
| 76 | } else { |
| 77 | assertEquals('arguments', name); |
| 78 | } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 79 | } |
| 80 | } |
| 81 | |
| 82 | |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 83 | function f() { |
| 84 | var a = 5; |
| 85 | var b = 0; |
| 86 | with ({b:6}) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 87 | return g(); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 88 | } |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 89 | } |
| 90 | |
| 91 | function checkFrame2(frame) { |
| 92 | // Frame 2 (f) has normal variables a and b (and arguments). |
| 93 | var count = frame.localCount(); |
| 94 | assertEquals(3, count); |
| 95 | for (var i = 0; i < count; ++i) { |
| 96 | var name = frame.localName(i); |
| 97 | var value = frame.localValue(i).value(); |
| 98 | if (name == 'a') { |
| 99 | assertEquals(5, value); |
| 100 | } else if (name == 'b') { |
| 101 | assertEquals(0, value); |
| 102 | } else { |
| 103 | assertEquals('arguments', name); |
| 104 | } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 105 | } |
| 106 | } |
| 107 | |
| 108 | |
| 109 | function listener(event, exec_state, event_data, data) { |
| 110 | try { |
| 111 | if (event == Debug.DebugEvent.Break) |
| 112 | { |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 113 | checkFrame0(exec_state.frame(0)); |
| 114 | checkFrame1(exec_state.frame(1)); |
| 115 | checkFrame2(exec_state.frame(2)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 116 | |
| 117 | // Evaluating a and b on frames 0, 1 and 2 produces 1, 2, 3, 4, 5 and 6. |
| 118 | assertEquals(1, exec_state.frame(0).evaluate('a').value()); |
| 119 | assertEquals(2, exec_state.frame(0).evaluate('b').value()); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 120 | assertEquals(5, exec_state.frame(0).evaluate('eval').value()); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 121 | assertEquals(3, exec_state.frame(1).evaluate('a').value()); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 122 | // Reference error because g does not reference b. |
| 123 | assertThrows(() => exec_state.frame(1).evaluate('b'), ReferenceError); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 124 | assertEquals("function", |
| 125 | typeof exec_state.frame(1).evaluate('eval').value()); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 126 | assertEquals(5, exec_state.frame(2).evaluate('a').value()); |
| 127 | assertEquals(6, exec_state.frame(2).evaluate('b').value()); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 128 | assertEquals("function", |
| 129 | typeof exec_state.frame(2).evaluate('eval').value()); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 130 | // Assignments to local variables only have temporary effect. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 131 | assertEquals("foo", |
| 132 | exec_state.frame(0).evaluate('a = "foo"').value()); |
| 133 | assertEquals("bar", |
| 134 | exec_state.frame(1).evaluate('a = "bar"').value()); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 135 | // Indicate that all was processed. |
| 136 | listenerComplete = true; |
| 137 | } |
| 138 | } catch (e) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 139 | exception = e; |
| 140 | print("Caught something. " + e + " " + e.stack); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 141 | }; |
| 142 | }; |
| 143 | |
| 144 | // Add the debug event listener. |
| 145 | Debug.setListener(listener); |
| 146 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 147 | var f_result = f(); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 148 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 149 | assertEquals(4, f_result); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 150 | |
| 151 | // Make sure that the debug event listener was invoked. |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 152 | assertFalse(exception, "exception in listener") |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 153 | assertTrue(listenerComplete); |