1 // Copyright 2014 the V8 project authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 // Flags: --expose-debug-as debug --harmony 6 7 Debug = debug.Debug; 8 var break_count = 0 9 var exception = null; 10 var log = [] 11 12 var s = 0; 13 var a = [1, 2, 3]; 14 var b = [1, 2, 3, 4]; 15 var null_value = null; 16 var i = 0; 17 18 function f() { 19 "use strict"; 20 debugger; // Break a 21 var j; // Break b 22 23 for (var i in null_value) { // Break c 24 s += a[i]; 25 } 26 27 for (j in null_value) { // Break d 28 s += a[j]; 29 } 30 31 for (var i in a) { // Break e 32 s += a[i]; // Break E 33 } 34 35 for (j in a) { // Break f 36 s += a[j]; // Break F 37 } 38 39 for (let i in a) { // Break g 40 s += a[i]; // Break G 41 } 42 43 for (var i of a) { // Break h 44 s += i; // Break H 45 } 46 47 for (j of a) { // Break i 48 s += j; // Break I 49 } 50 51 for (let i of a) { // Break j 52 s += i; // Break J 53 } 54 55 for (var i = 0; i < 3; i++) { // Break k 56 s += a[i]; // Break K 57 } 58 59 for (j = 0; j < 3; j++) { // Break l 60 s += a[j]; // Break L 61 } 62 63 for (let i = 0; i < 3; i++) { // Break m 64 s += a[i]; // Break M 65 } 66 67 for (let i of a) {} // Break n 68 69 [1, ...a] // Break o 70 71 } // Break y 72 73 function listener(event, exec_state, event_data, data) { 74 if (event != Debug.DebugEvent.Break) return; 75 try { 76 var line = exec_state.frame(0).sourceLineText(); 77 var col = exec_state.frame(0).sourceColumn(); 78 print(line); 79 var match = line.match(/\/\/ Break (\w)$/); 80 assertEquals(2, match.length); 81 log.push(match[1] + col); 82 exec_state.prepareStep(Debug.StepAction.StepNext); 83 break_count++; 84 } catch (e) { 85 exception = e; 86 } 87 } 88 89 Debug.setListener(listener); 90 f(); 91 Debug.setListener(null); // Break z 92 93 print("log:\n"+ JSON.stringify(log)); 94 // The let declaration differs from var in that the loop variable 95 // is declared in every iteration. 96 // TODO(verwaest): For-of has hacky position numbers for Symbol.iterator and 97 // .next. Restore to proper positions once the CallPrinter can disambiguate 98 // based on other values. 99 var expected = [ 100 // Entry 101 "a2", 102 // Empty for-in-var: get enumerable 103 "c16", 104 // Empty for-in: get enumerable 105 "d12", 106 // For-in-var: get enumerable, assign, body, assign, body, ... 107 "e16","e11","E4","e11","E4","e11","E4","e11", 108 // For-in: get enumerable, assign, body, assign, body, ... 109 "f12","f7","F4","f7","F4","f7","F4","f7", 110 // For-in-let: get enumerable, next, body, next, ... 111 "g16","g11","G4","g11","G4","g11","G4","g11", 112 // For-of-var: [Symbol.iterator](), next(), body, next(), body, ... 113 "h16","h13","H4","h13","H4","h13","H4","h13", 114 // For-of: [Symbol.iterator](), next(), body, next(), body, ... 115 "i12","i9","I4","i9","I4","i9","I4","i9", 116 // For-of-let: [Symbol.iterator](), next(), body, next(), ... 117 "j18","j14","J4","j14","J4","j14","J4","j14", 118 // For-var: init, condition, body, next, condition, body, ... 119 "k15","k20","K4","k26","k20","K4","k26","k20","K4","k26","k20", 120 // For: init, condition, body, next, condition, body, ... 121 "l7","l16","L4","l22","l16","L4","l22","l16","L4","l22","l16", 122 // For-let: init, condition, body, next, condition, body, ... 123 "m15","m20","M4","m26","m20","M4","m26","m20","M4","m26","m20", 124 // For-of, empty: [Symbol.iterator](), next() once 125 "n16", "n13", 126 // Spread: expression statement, spread 127 "o2", "o9", 128 // Exit. 129 "y0","z0", 130 ] 131 print("expected:\n"+ JSON.stringify(expected)); 132 133 assertArrayEquals(expected, log); 134 assertEquals(54, s); 135 assertNull(exception); 136
