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 6 7var Debug = debug.Debug; 8 9function RunTest(name, formals_and_body, args, handler, continuation) { 10 var handler_called = false; 11 var exception = null; 12 13 function listener(event, exec_state, event_data, data) { 14 try { 15 if (event == Debug.DebugEvent.Break) { 16 handler_called = true; 17 handler(exec_state); 18 } 19 } catch (e) { 20 exception = e; 21 } 22 } 23 24 function run(thunk) { 25 handler_called = false; 26 exception = null; 27 28 var res = thunk(); 29 if (continuation) 30 continuation(res); 31 32 assertTrue(handler_called, "listener not called for " + name); 33 assertNull(exception, name + " / " + exception); 34 } 35 36 var fun = Function.apply(null, formals_and_body); 37 var gen = (function*(){}).constructor.apply(null, formals_and_body); 38 39 Debug.setListener(listener); 40 41 run(function () { return fun.apply(null, args) }); 42 run(function () { return gen.apply(null, args).next().value }); 43 44 // TODO(wingo): Uncomment after bug 2838 is fixed. 45 // Debug.setListener(null); 46} 47 48// Check that two scope are the same. 49function assertScopeMirrorEquals(scope1, scope2) { 50 assertEquals(scope1.scopeType(), scope2.scopeType()); 51 assertEquals(scope1.frameIndex(), scope2.frameIndex()); 52 assertEquals(scope1.scopeIndex(), scope2.scopeIndex()); 53 assertPropertiesEqual(scope1.scopeObject().value(), scope2.scopeObject().value()); 54} 55 56function CheckFastAllScopes(scopes, exec_state) { 57 var fast_all_scopes = exec_state.frame().allScopes(true); 58 var length = fast_all_scopes.length; 59 assertTrue(scopes.length >= length); 60 for (var i = 0; i < scopes.length && i < length; i++) { 61 var scope = fast_all_scopes[length - i - 1]; 62 assertTrue(scope.isScope()); 63 assertEquals(scopes[scopes.length - i - 1], scope.scopeType()); 64 } 65} 66 67// Check that the scope chain contains the expected types of scopes. 68function CheckScopeChain(scopes, exec_state) { 69 var all_scopes = exec_state.frame().allScopes(); 70 assertEquals(scopes.length, exec_state.frame().scopeCount()); 71 assertEquals(scopes.length, all_scopes.length, "FrameMirror.allScopes length"); 72 for (var i = 0; i < scopes.length; i++) { 73 var scope = exec_state.frame().scope(i); 74 assertTrue(scope.isScope()); 75 assertEquals(scopes[i], scope.scopeType()); 76 assertScopeMirrorEquals(all_scopes[i], scope); 77 78 // Check the global object when hitting the global scope. 79 if (scopes[i] == debug.ScopeType.Global) { 80 // Objects don't have same class (one is "global", other is "Object", 81 // so just check the properties directly. 82 assertPropertiesEqual(this, scope.scopeObject().value()); 83 } 84 } 85 CheckFastAllScopes(scopes, exec_state); 86 87 // Get the debug command processor. 88 var dcp = exec_state.debugCommandProcessor("unspecified_running_state"); 89 90 // Send a scopes request and check the result. 91 var json; 92 var request_json = '{"seq":0,"type":"request","command":"scopes"}'; 93 var response_json = dcp.processDebugJSONRequest(request_json); 94 var response = JSON.parse(response_json); 95 assertEquals(scopes.length, response.body.scopes.length); 96 for (var i = 0; i < scopes.length; i++) { 97 assertEquals(i, response.body.scopes[i].index); 98 assertEquals(scopes[i], response.body.scopes[i].type); 99 if (scopes[i] == debug.ScopeType.Local || 100 scopes[i] == debug.ScopeType.Closure) { 101 assertTrue(response.body.scopes[i].object.ref < 0); 102 } else { 103 assertTrue(response.body.scopes[i].object.ref >= 0); 104 } 105 var found = false; 106 for (var j = 0; j < response.refs.length && !found; j++) { 107 found = response.refs[j].handle == response.body.scopes[i].object.ref; 108 } 109 assertTrue(found, "Scope object " + response.body.scopes[i].object.ref + " not found"); 110 } 111} 112 113// Check that the content of the scope is as expected. For functions just check 114// that there is a function. 115function CheckScopeContent(content, number, exec_state) { 116 var scope = exec_state.frame().scope(number); 117 var count = 0; 118 for (var p in content) { 119 var property_mirror = scope.scopeObject().property(p); 120 assertFalse(property_mirror.isUndefined(), 'property ' + p + ' not found in scope'); 121 if (typeof(content[p]) === 'function') { 122 assertTrue(property_mirror.value().isFunction()); 123 } else { 124 assertEquals(content[p], property_mirror.value().value(), 'property ' + p + ' has unexpected value'); 125 } 126 count++; 127 } 128 129 // 'arguments' and might be exposed in the local and closure scope. Just 130 // ignore this. 131 var scope_size = scope.scopeObject().properties().length; 132 if (!scope.scopeObject().property('arguments').isUndefined()) { 133 scope_size--; 134 } 135 // Skip property with empty name. 136 if (!scope.scopeObject().property('').isUndefined()) { 137 scope_size--; 138 } 139 140 if (count != scope_size) { 141 print('Names found in scope:'); 142 var names = scope.scopeObject().propertyNames(); 143 for (var i = 0; i < names.length; i++) { 144 print(names[i]); 145 } 146 } 147 assertEquals(count, scope_size); 148 149 // Get the debug command processor. 150 var dcp = exec_state.debugCommandProcessor("unspecified_running_state"); 151 152 // Send a scope request for information on a single scope and check the 153 // result. 154 var request_json = '{"seq":0,"type":"request","command":"scope","arguments":{"number":'; 155 request_json += scope.scopeIndex(); 156 request_json += '}}'; 157 var response_json = dcp.processDebugJSONRequest(request_json); 158 var response = JSON.parse(response_json); 159 assertEquals(scope.scopeType(), response.body.type); 160 assertEquals(number, response.body.index); 161 if (scope.scopeType() == debug.ScopeType.Local || 162 scope.scopeType() == debug.ScopeType.Closure) { 163 assertTrue(response.body.object.ref < 0); 164 } else { 165 assertTrue(response.body.object.ref >= 0); 166 } 167 var found = false; 168 for (var i = 0; i < response.refs.length && !found; i++) { 169 found = response.refs[i].handle == response.body.object.ref; 170 } 171 assertTrue(found, "Scope object " + response.body.object.ref + " not found"); 172} 173 174 175// Simple empty local scope. 176RunTest("Local 1", 177 ['debugger;'], 178 [], 179 function (exec_state) { 180 CheckScopeChain([debug.ScopeType.Local, 181 debug.ScopeType.Global], exec_state); 182 CheckScopeContent({}, 0, exec_state); 183 }); 184 185// Local scope with a parameter. 186RunTest("Local 2", 187 ['a', 'debugger;'], 188 [1], 189 function (exec_state) { 190 CheckScopeChain([debug.ScopeType.Local, 191 debug.ScopeType.Global], exec_state); 192 CheckScopeContent({a:1}, 0, exec_state); 193 }); 194 195// Local scope with a parameter and a local variable. 196RunTest("Local 3", 197 ['a', 'var x = 3; debugger;'], 198 [1], 199 function (exec_state) { 200 CheckScopeChain([debug.ScopeType.Local, 201 debug.ScopeType.Global], exec_state); 202 CheckScopeContent({a:1,x:3}, 0, exec_state); 203 }); 204 205// Local scope with parameters and local variables. 206RunTest("Local 4", 207 ['a', 'b', 'var x = 3; var y = 4; debugger;'], 208 [1, 2], 209 function (exec_state) { 210 CheckScopeChain([debug.ScopeType.Local, 211 debug.ScopeType.Global], exec_state); 212 CheckScopeContent({a:1,b:2,x:3,y:4}, 0, exec_state); 213 }); 214 215// Empty local scope with use of eval. 216RunTest("Local 5", 217 ['eval(""); debugger;'], 218 [], 219 function (exec_state) { 220 CheckScopeChain([debug.ScopeType.Local, 221 debug.ScopeType.Global], exec_state); 222 CheckScopeContent({}, 0, exec_state); 223 }); 224 225// Local introducing local variable using eval. 226RunTest("Local 6", 227 ['eval("var i = 5"); debugger;'], 228 [], 229 function (exec_state) { 230 CheckScopeChain([debug.ScopeType.Local, 231 debug.ScopeType.Global], exec_state); 232 CheckScopeContent({i:5}, 0, exec_state); 233 }); 234 235// Local scope with parameters, local variables and local variable introduced 236// using eval. 237RunTest("Local 7", 238 ['a', 'b', 239 "var x = 3; var y = 4;\n" 240 + "eval('var i = 5'); eval ('var j = 6');\n" 241 + "debugger;"], 242 [1, 2], 243 function (exec_state) { 244 CheckScopeChain([debug.ScopeType.Local, 245 debug.ScopeType.Global], exec_state); 246 CheckScopeContent({a:1,b:2,x:3,y:4,i:5,j:6}, 0, exec_state); 247 }); 248 249// Nested empty with blocks. 250RunTest("With", 251 ["with ({}) { with ({}) { debugger; } }"], 252 [], 253 function (exec_state) { 254 CheckScopeChain([debug.ScopeType.With, 255 debug.ScopeType.With, 256 debug.ScopeType.Local, 257 debug.ScopeType.Global], exec_state); 258 CheckScopeContent({}, 0, exec_state); 259 CheckScopeContent({}, 1, exec_state); 260 }); 261 262// Simple closure formed by returning an inner function referering the outer 263// functions arguments. 264RunTest("Closure 1", 265 ['a', 'return function() { debugger; return a; }'], 266 [1], 267 function (exec_state) { 268 CheckScopeChain([debug.ScopeType.Local, 269 debug.ScopeType.Closure, 270 debug.ScopeType.Global], exec_state); 271 CheckScopeContent({a:1}, 1, exec_state); 272 }, 273 function (result) { result() }); 274 275RunTest("The full monty", 276 ['a', 'b', 277 "var x = 3;\n" + 278 "var y = 4;\n" + 279 "eval('var i = 5');\n" + 280 "eval('var j = 6');\n" + 281 "function f(a, b) {\n" + 282 " var x = 9;\n" + 283 " var y = 10;\n" + 284 " eval('var i = 11');\n" + 285 " eval('var j = 12');\n" + 286 " with ({j:13}){\n" + 287 " return function() {\n" + 288 " var x = 14;\n" + 289 " with ({a:15}) {\n" + 290 " with ({b:16}) {\n" + 291 " debugger;\n" + 292 " some_global = a;\n" + 293 " return f;\n" + 294 " }\n" + 295 " }\n" + 296 " };\n" + 297 " }\n" + 298 "}\n" + 299 "return f(a, b);"], 300 [1, 2], 301 function (exec_state) { 302 CheckScopeChain([debug.ScopeType.With, 303 debug.ScopeType.With, 304 debug.ScopeType.Local, 305 debug.ScopeType.With, 306 debug.ScopeType.Closure, 307 debug.ScopeType.Closure, 308 debug.ScopeType.Global], exec_state); 309 CheckScopeContent({b:16}, 0, exec_state); 310 CheckScopeContent({a:15}, 1, exec_state); 311 CheckScopeContent({x:14}, 2, exec_state); 312 CheckScopeContent({j:13}, 3, exec_state); 313 CheckScopeContent({a:1,b:2,x:9,y:10,i:11,j:12}, 4, exec_state); 314 CheckScopeContent({a:1,b:2,x:3,y:4,i:5,j:6,f:function(){}}, 5, exec_state); 315 }, 316 function (result) { result() }); 317 318RunTest("Catch block 1", 319 ["try { throw 'Exception'; } catch (e) { debugger; }"], 320 [], 321 function (exec_state) { 322 CheckScopeChain([debug.ScopeType.Catch, 323 debug.ScopeType.Local, 324 debug.ScopeType.Global], exec_state); 325 CheckScopeContent({e:'Exception'}, 0, exec_state); 326 }); 327