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| 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-generators |
| 6 |
| 7 var Debug = debug.Debug; |
| 8 |
| 9 function 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. |
| 49 function 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 |
| 56 function 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. |
| 68 function 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 + " n
ot 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. |
| 115 function 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. |
| 176 RunTest("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. |
| 186 RunTest("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. |
| 196 RunTest("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. |
| 206 RunTest("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. |
| 216 RunTest("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. |
| 226 RunTest("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. |
| 237 RunTest("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. |
| 250 RunTest("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. |
| 264 RunTest("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 |
| 275 RunTest("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_st
ate); |
| 315 }, |
| 316 function (result) { result() }); |
| 317 |
| 318 RunTest("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 }); |
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