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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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