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qv4argumentsobject.cpp

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1/****************************************************************************-
2**-
3** Copyright (C) 2016 The Qt Company Ltd.-
4** Contact: https://www.qt.io/licensing/-
5**-
6** This file is part of the QtQml module of the Qt Toolkit.-
7**-
8** $QT_BEGIN_LICENSE:LGPL$-
9** Commercial License Usage-
10** Licensees holding valid commercial Qt licenses may use this file in-
11** accordance with the commercial license agreement provided with the-
12** Software or, alternatively, in accordance with the terms contained in-
13** a written agreement between you and The Qt Company. For licensing terms-
14** and conditions see https://www.qt.io/terms-conditions. For further-
15** information use the contact form at https://www.qt.io/contact-us.-
16**-
17** GNU Lesser General Public License Usage-
18** Alternatively, this file may be used under the terms of the GNU Lesser-
19** General Public License version 3 as published by the Free Software-
20** Foundation and appearing in the file LICENSE.LGPL3 included in the-
21** packaging of this file. Please review the following information to-
22** ensure the GNU Lesser General Public License version 3 requirements-
23** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.-
24**-
25** GNU General Public License Usage-
26** Alternatively, this file may be used under the terms of the GNU-
27** General Public License version 2.0 or (at your option) the GNU General-
28** Public license version 3 or any later version approved by the KDE Free-
29** Qt Foundation. The licenses are as published by the Free Software-
30** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3-
31** included in the packaging of this file. Please review the following-
32** information to ensure the GNU General Public License requirements will-
33** be met: https://www.gnu.org/licenses/gpl-2.0.html and-
34** https://www.gnu.org/licenses/gpl-3.0.html.-
35**-
36** $QT_END_LICENSE$-
37**-
38****************************************************************************/-
39#include <qv4argumentsobject_p.h>-
40#include <qv4arrayobject_p.h>-
41#include <qv4alloca_p.h>-
42#include <qv4scopedvalue_p.h>-
43#include <qv4string_p.h>-
44#include <qv4function_p.h>-
45#include <qv4jscall_p.h>-
46#include <qv4symbol_p.h>-
47-
48using namespace QV4;-
49-
50DEFINE_OBJECT_VTABLE(ArgumentsObject);-
51DEFINE_OBJECT_VTABLE(StrictArgumentsObject);-
52-
53void Heap::ArgumentsObject::init(QV4::CppStackFrame *frame)-
54{-
55 ExecutionEngine *v4 = internalClass->engine;-
56-
57 int nFormals = frame->v4Function->nFormals;-
58 QV4::CallContext *context = static_cast<QV4::CallContext *>(frame->context());-
59-
60 Object::init();-
61 fullyCreated = false;-
62 this->nFormals = nFormals;-
63 this->context.set(v4, context->d());-
64 Q_ASSERT(vtable() == QV4::ArgumentsObject::staticVTable());-
65-
66 Q_ASSERT(CalleePropertyIndex == internalClass->find(v4->id_callee()->propertyKey()));-
67 setProperty(v4, CalleePropertyIndex, context->d()->function);-
68 Q_ASSERT(LengthPropertyIndex == internalClass->find(v4->id_length()->propertyKey()));-
69 setProperty(v4, LengthPropertyIndex, Primitive::fromInt32(context->argc()));-
70 Q_ASSERT(SymbolIteratorPropertyIndex == internalClass->find(v4->symbol_iterator()->propertyKey()));-
71 setProperty(v4, SymbolIteratorPropertyIndex, *v4->arrayProtoValues());-
72}
executed 4487 times by 11 tests: end of block
Executed by:
  • tst_ecmascripttests
  • tst_qjsengine
  • tst_qjsvalue
  • tst_qmlcachegen
  • tst_qqmlecmascript
  • tst_qqmllistmodelworkerscript
  • tst_qqmlmetatype
  • tst_qqmlqt
  • tst_qquicklayouts
  • tst_qquickworkerscript
  • tst_quicktestmainwithsetup
4487
73-
74void Heap::StrictArgumentsObject::init(QV4::CppStackFrame *frame)-
75{-
76 Q_ASSERT(vtable() == QV4::StrictArgumentsObject::staticVTable());-
77 ExecutionEngine *v4 = internalClass->engine;-
78-
79 Object::init();-
80-
81 Q_ASSERT(CalleePropertyIndex == internalClass->find(v4->id_callee()->propertyKey()));-
82 Q_ASSERT(SymbolIteratorPropertyIndex == internalClass->find(v4->symbol_iterator()->propertyKey()));-
83 setProperty(v4, SymbolIteratorPropertyIndex, *v4->arrayProtoValues());-
84 setProperty(v4, CalleePropertyIndex + QV4::Object::GetterOffset, *v4->thrower());-
85 setProperty(v4, CalleePropertyIndex + QV4::Object::SetterOffset, *v4->thrower());-
86-
87 Scope scope(v4);-
88 Scoped<QV4::StrictArgumentsObject> args(scope, this);-
89 args->arrayReserve(frame->originalArgumentsCount);-
90 args->arrayPut(0, frame->originalArguments, frame->originalArgumentsCount);-
91-
92 Q_ASSERT(LengthPropertyIndex == args->internalClass()->find(v4->id_length()->propertyKey()));-
93 setProperty(v4, LengthPropertyIndex, Primitive::fromInt32(frame->originalArgumentsCount));-
94}
executed 3836 times by 2 tests: end of block
Executed by:
  • tst_ecmascripttests
  • tst_qjsengine
3836
95-
96void ArgumentsObject::fullyCreate()-
97{-
98 if (fullyCreated())
fullyCreated()Description
TRUEevaluated 1101 times by 1 test
Evaluated by:
  • tst_ecmascripttests
FALSEevaluated 446 times by 1 test
Evaluated by:
  • tst_ecmascripttests
446-1101
99 return;
executed 1101 times by 1 test: return;
Executed by:
  • tst_ecmascripttests
1101
100-
101 Scope scope(engine());-
102-
103 int argCount = context()->argc();-
104 uint numAccessors = qMin(d()->nFormals, argCount);-
105 ArrayData::realloc(this, Heap::ArrayData::Sparse, argCount, true);-
106 scope.engine->requireArgumentsAccessors(numAccessors);-
107-
108 Scoped<MemberData> md(scope, d()->mappedArguments);-
109 if (numAccessors) {
numAccessorsDescription
TRUEevaluated 200 times by 1 test
Evaluated by:
  • tst_ecmascripttests
FALSEevaluated 252 times by 1 test
Evaluated by:
  • tst_ecmascripttests
200-252
110 d()->mappedArguments.set(scope.engine, md->allocate(scope.engine, numAccessors));-
111 for (uint i = 0; i < numAccessors; ++i) {
i < numAccessorsDescription
TRUEevaluated 403 times by 1 test
Evaluated by:
  • tst_ecmascripttests
FALSEevaluated 198 times by 1 test
Evaluated by:
  • tst_ecmascripttests
198-403
112 d()->mappedArguments->values.set(scope.engine, i, context()->args()[i]);-
113 arraySet(i, scope.engine->argumentsAccessors + i, Attr_Accessor);-
114 }
executed 403 times by 1 test: end of block
Executed by:
  • tst_ecmascripttests
403
115 }
executed 199 times by 1 test: end of block
Executed by:
  • tst_ecmascripttests
199
116 arrayPut(numAccessors, context()->args() + numAccessors, argCount - numAccessors);-
117 for (int i = int(numAccessors); i < argCount; ++i)
i < argCountDescription
TRUEevaluated 334 times by 1 test
Evaluated by:
  • tst_ecmascripttests
FALSEevaluated 451 times by 1 test
Evaluated by:
  • tst_ecmascripttests
334-451
118 setArrayAttributes(i, Attr_Data);
executed 334 times by 1 test: setArrayAttributes(i, Attr_Data);
Executed by:
  • tst_ecmascripttests
334
119-
120 d()->fullyCreated = true;-
121}
executed 450 times by 1 test: end of block
Executed by:
  • tst_ecmascripttests
450
122-
123bool ArgumentsObject::virtualDefineOwnProperty(Managed *m, PropertyKey id, const Property *desc, PropertyAttributes attrs)-
124{-
125 if (!id.isArrayIndex())
!id.isArrayIndex()Description
TRUEevaluated 188 times by 1 test
Evaluated by:
  • tst_ecmascripttests
FALSEevaluated 399 times by 1 test
Evaluated by:
  • tst_ecmascripttests
188-399
126 return Object::virtualDefineOwnProperty(m, id, desc, attrs);
executed 188 times by 1 test: return Object::virtualDefineOwnProperty(m, id, desc, attrs);
Executed by:
  • tst_ecmascripttests
188
127-
128 ArgumentsObject *a = static_cast<ArgumentsObject *>(m);-
129 a->fullyCreate();-
130-
131 uint index = id.asArrayIndex();-
132 Scope scope(m);-
133 ScopedProperty map(scope);-
134 PropertyAttributes mapAttrs;-
135 uint numAccessors = qMin(a->d()->nFormals, a->context()->argc());-
136 bool isMapped = false;-
137 if (a->arrayData() && index < numAccessors &&
a->arrayData()Description
TRUEevaluated 401 times by 1 test
Evaluated by:
  • tst_ecmascripttests
FALSEnever evaluated
index < numAccessorsDescription
TRUEevaluated 225 times by 1 test
Evaluated by:
  • tst_ecmascripttests
FALSEevaluated 176 times by 1 test
Evaluated by:
  • tst_ecmascripttests
0-401
138 a->arrayData()->attributes(index).isAccessor() &&
a->arrayData()...).isAccessor()Description
TRUEevaluated 144 times by 1 test
Evaluated by:
  • tst_ecmascripttests
FALSEevaluated 80 times by 1 test
Evaluated by:
  • tst_ecmascripttests
80-144
139 a->arrayData()->get(index) == scope.engine->argumentsAccessors[index].getter()->asReturnedValue())
a->arrayData()...eturnedValue()Description
TRUEevaluated 124 times by 1 test
Evaluated by:
  • tst_ecmascripttests
FALSEevaluated 20 times by 1 test
Evaluated by:
  • tst_ecmascripttests
20-124
140 isMapped = true;
executed 124 times by 1 test: isMapped = true;
Executed by:
  • tst_ecmascripttests
124
141-
142 if (isMapped) {
isMappedDescription
TRUEevaluated 124 times by 1 test
Evaluated by:
  • tst_ecmascripttests
FALSEevaluated 276 times by 1 test
Evaluated by:
  • tst_ecmascripttests
124-276
143 Q_ASSERT(a->arrayData());-
144 mapAttrs = a->arrayData()->attributes(index);-
145 a->arrayData()->getProperty(index, map, &mapAttrs);-
146 a->setArrayAttributes(index, Attr_Data);-
147 PropertyIndex arrayIndex{ a->arrayData(), a->arrayData()->values.values + a->arrayData()->mappedIndex(index) };-
148 arrayIndex.set(scope.engine, a->d()->mappedArguments->values[index]);-
149 }
executed 126 times by 1 test: end of block
Executed by:
  • tst_ecmascripttests
126
150-
151 bool result = Object::virtualDefineOwnProperty(m, id, desc, attrs);-
152 if (!result)
!resultDescription
TRUEevaluated 88 times by 1 test
Evaluated by:
  • tst_ecmascripttests
FALSEevaluated 312 times by 1 test
Evaluated by:
  • tst_ecmascripttests
88-312
153 return false;
executed 88 times by 1 test: return false;
Executed by:
  • tst_ecmascripttests
88
154-
155 if (isMapped && attrs.isData()) {
isMappedDescription
TRUEevaluated 125 times by 1 test
Evaluated by:
  • tst_ecmascripttests
FALSEevaluated 188 times by 1 test
Evaluated by:
  • tst_ecmascripttests
attrs.isData()Description
TRUEevaluated 52 times by 1 test
Evaluated by:
  • tst_ecmascripttests
FALSEevaluated 74 times by 1 test
Evaluated by:
  • tst_ecmascripttests
52-188
156 Q_ASSERT(a->arrayData());-
157 ScopedFunctionObject setter(scope, map->setter());-
158 JSCallData jsCallData(scope, 1);-
159 *jsCallData->thisObject = a->asReturnedValue();-
160 jsCallData->args[0] = desc->value;-
161 setter->call(jsCallData);-
162-
163 if (attrs.isWritable()) {
attrs.isWritable()Description
TRUEevaluated 2 times by 1 test
Evaluated by:
  • tst_ecmascripttests
FALSEevaluated 49 times by 1 test
Evaluated by:
  • tst_ecmascripttests
2-49
164 a->setArrayAttributes(index, mapAttrs);-
165 a->arrayData()->setProperty(m->engine(), index, map);-
166 }
executed 2 times by 1 test: end of block
Executed by:
  • tst_ecmascripttests
2
167 }
executed 51 times by 1 test: end of block
Executed by:
  • tst_ecmascripttests
51
168-
169 return result;
executed 313 times by 1 test: return result;
Executed by:
  • tst_ecmascripttests
313
170}-
171-
172ReturnedValue ArgumentsObject::virtualGet(const Managed *m, PropertyKey id, const Value *receiver, bool *hasProperty)-
173{-
174 const ArgumentsObject *args = static_cast<const ArgumentsObject *>(m);-
175 if (id.isArrayIndex() && !args->fullyCreated()) {
id.isArrayIndex()Description
TRUEevaluated 1601 times by 4 tests
Evaluated by:
  • tst_ecmascripttests
  • tst_qjsengine
  • tst_qjsvalue
  • tst_qqmlecmascript
FALSEevaluated 1291 times by 5 tests
Evaluated by:
  • tst_ecmascripttests
  • tst_qjsengine
  • tst_qqmlecmascript
  • tst_qquicklayouts
  • tst_quicktestmainwithsetup
!args->fullyCreated()Description
TRUEevaluated 1075 times by 4 tests
Evaluated by:
  • tst_ecmascripttests
  • tst_qjsengine
  • tst_qjsvalue
  • tst_qqmlecmascript
FALSEevaluated 525 times by 1 test
Evaluated by:
  • tst_ecmascripttests
525-1601
176 uint index = id.asArrayIndex();-
177 if (index < static_cast<uint>(args->context()->argc())) {
index < static...ext()->argc())Description
TRUEevaluated 1047 times by 4 tests
Evaluated by:
  • tst_ecmascripttests
  • tst_qjsengine
  • tst_qjsvalue
  • tst_qqmlecmascript
FALSEevaluated 28 times by 2 tests
Evaluated by:
  • tst_ecmascripttests
  • tst_qjsvalue
28-1047
178 if (hasProperty)
hasPropertyDescription
TRUEevaluated 222 times by 1 test
Evaluated by:
  • tst_ecmascripttests
FALSEevaluated 825 times by 4 tests
Evaluated by:
  • tst_ecmascripttests
  • tst_qjsengine
  • tst_qjsvalue
  • tst_qqmlecmascript
222-825
179 *hasProperty = true;
executed 222 times by 1 test: *hasProperty = true;
Executed by:
  • tst_ecmascripttests
222
180 return args->context()->args()[index].asReturnedValue();
executed 1046 times by 4 tests: return args->context()->args()[index].asReturnedValue();
Executed by:
  • tst_ecmascripttests
  • tst_qjsengine
  • tst_qjsvalue
  • tst_qqmlecmascript
1046
181 }-
182 }
executed 28 times by 2 tests: end of block
Executed by:
  • tst_ecmascripttests
  • tst_qjsvalue
28
183 return Object::virtualGet(m, id, receiver, hasProperty);
executed 1844 times by 6 tests: return Object::virtualGet(m, id, receiver, hasProperty);
Executed by:
  • tst_ecmascripttests
  • tst_qjsengine
  • tst_qjsvalue
  • tst_qqmlecmascript
  • tst_qquicklayouts
  • tst_quicktestmainwithsetup
1844
184}-
185-
186bool ArgumentsObject::virtualPut(Managed *m, PropertyKey id, const Value &value, Value *receiver)-
187{-
188 ArgumentsObject *args = static_cast<ArgumentsObject *>(m);-
189 if (id.isArrayIndex()) {
id.isArrayIndex()Description
TRUEevaluated 237 times by 1 test
Evaluated by:
  • tst_ecmascripttests
FALSEevaluated 327 times by 1 test
Evaluated by:
  • tst_ecmascripttests
237-327
190 uint index = id.asArrayIndex();-
191 if (!args->fullyCreated() && index >= static_cast<uint>(args->context()->argc()))
!args->fullyCreated()Description
TRUEevaluated 46 times by 1 test
Evaluated by:
  • tst_ecmascripttests
FALSEevaluated 191 times by 1 test
Evaluated by:
  • tst_ecmascripttests
index >= stati...ext()->argc())Description
TRUEevaluated 30 times by 1 test
Evaluated by:
  • tst_ecmascripttests
FALSEevaluated 16 times by 1 test
Evaluated by:
  • tst_ecmascripttests
16-191
192 args->fullyCreate();
executed 30 times by 1 test: args->fullyCreate();
Executed by:
  • tst_ecmascripttests
30
193-
194 if (!args->fullyCreated()) {
!args->fullyCreated()Description
TRUEevaluated 16 times by 1 test
Evaluated by:
  • tst_ecmascripttests
FALSEevaluated 221 times by 1 test
Evaluated by:
  • tst_ecmascripttests
16-221
195 args->context()->setArg(index, value);-
196 return true;
executed 16 times by 1 test: return true;
Executed by:
  • tst_ecmascripttests
16
197 }-
198 }
executed 221 times by 1 test: end of block
Executed by:
  • tst_ecmascripttests
221
199 return Object::virtualPut(m, id, value, receiver);
executed 549 times by 1 test: return Object::virtualPut(m, id, value, receiver);
Executed by:
  • tst_ecmascripttests
549
200}-
201-
202bool ArgumentsObject::virtualDeleteProperty(Managed *m, PropertyKey id)-
203{-
204 ArgumentsObject *args = static_cast<ArgumentsObject *>(m);-
205 if (!args->fullyCreated())
!args->fullyCreated()Description
TRUEevaluated 54 times by 1 test
Evaluated by:
  • tst_ecmascripttests
FALSEevaluated 287 times by 1 test
Evaluated by:
  • tst_ecmascripttests
54-287
206 args->fullyCreate();
executed 53 times by 1 test: args->fullyCreate();
Executed by:
  • tst_ecmascripttests
53
207 return Object::virtualDeleteProperty(m, id);
executed 342 times by 1 test: return Object::virtualDeleteProperty(m, id);
Executed by:
  • tst_ecmascripttests
342
208}-
209-
210PropertyAttributes ArgumentsObject::virtualGetOwnProperty(Managed *m, PropertyKey id, Property *p)-
211{-
212 const ArgumentsObject *args = static_cast<const ArgumentsObject *>(m);-
213 if (!id.isArrayIndex() || args->fullyCreated())
!id.isArrayIndex()Description
TRUEevaluated 801 times by 1 test
Evaluated by:
  • tst_ecmascripttests
FALSEevaluated 974 times by 1 test
Evaluated by:
  • tst_ecmascripttests
args->fullyCreated()Description
TRUEevaluated 978 times by 1 test
Evaluated by:
  • tst_ecmascripttests
FALSEevaluated 2 times by 1 test
Evaluated by:
  • tst_ecmascripttests
2-978
214 return Object::virtualGetOwnProperty(m, id, p);
executed 1778 times by 1 test: return Object::virtualGetOwnProperty(m, id, p);
Executed by:
  • tst_ecmascripttests
1778
215-
216 uint index = id.asArrayIndex();-
217 uint argCount = args->context()->argc();-
218 if (index >= argCount)
index >= argCountDescription
TRUEevaluated 2 times by 1 test
Evaluated by:
  • tst_ecmascripttests
FALSEnever evaluated
0-2
219 return PropertyAttributes();
executed 2 times by 1 test: return PropertyAttributes();
Executed by:
  • tst_ecmascripttests
2
220 if (p)
pDescription
TRUEnever evaluated
FALSEnever evaluated
0
221 p->value = args->context()->args()[index];
never executed: p->value = args->context()->args()[index];
0
222 return Attr_Data;
never executed: return Attr_Data;
0
223}-
224-
225DEFINE_OBJECT_VTABLE(ArgumentsGetterFunction);-
226-
227ReturnedValue ArgumentsGetterFunction::virtualCall(const FunctionObject *getter, const Value *thisObject, const Value *, int)-
228{-
229 ExecutionEngine *v4 = getter->engine();-
230 Scope scope(v4);-
231 const ArgumentsGetterFunction *g = static_cast<const ArgumentsGetterFunction *>(getter);-
232 Scoped<ArgumentsObject> o(scope, thisObject->as<ArgumentsObject>());-
233 if (!o)
!oDescription
TRUEnever evaluated
FALSEevaluated 48 times by 1 test
Evaluated by:
  • tst_ecmascripttests
0-48
234 return v4->throwTypeError();
never executed: return v4->throwTypeError();
0
235-
236 Q_ASSERT(g->index() < static_cast<unsigned>(o->context()->argc()));-
237 return o->context()->args()[g->index()].asReturnedValue();
executed 48 times by 1 test: return o->context()->args()[g->index()].asReturnedValue();
Executed by:
  • tst_ecmascripttests
48
238}-
239-
240DEFINE_OBJECT_VTABLE(ArgumentsSetterFunction);-
241-
242ReturnedValue ArgumentsSetterFunction::virtualCall(const FunctionObject *setter, const Value *thisObject, const Value *argv, int argc)-
243{-
244 ExecutionEngine *v4 = setter->engine();-
245 Scope scope(v4);-
246 const ArgumentsSetterFunction *s = static_cast<const ArgumentsSetterFunction *>(setter);-
247 Scoped<ArgumentsObject> o(scope, thisObject->as<ArgumentsObject>());-
248 if (!o)
!oDescription
TRUEnever evaluated
FALSEevaluated 51 times by 1 test
Evaluated by:
  • tst_ecmascripttests
0-51
249 return v4->throwTypeError();
never executed: return v4->throwTypeError();
0
250-
251 Q_ASSERT(s->index() < static_cast<unsigned>(o->context()->argc()));-
252 o->context()->setArg(s->index(), argc ? argv[0] : Primitive::undefinedValue());-
253 return Encode::undefined();
executed 51 times by 1 test: return Encode::undefined();
Executed by:
  • tst_ecmascripttests
51
254}-
255-
256qint64 ArgumentsObject::virtualGetLength(const Managed *m)-
257{-
258 const ArgumentsObject *a = static_cast<const ArgumentsObject *>(m);-
259 return a->propertyData(Heap::ArgumentsObject::LengthPropertyIndex)->toLength();
executed 208 times by 1 test: return a->propertyData(Heap::ArgumentsObject::LengthPropertyIndex)->toLength();
Executed by:
  • tst_ecmascripttests
208
260}-
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