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qv4lookup_p.h

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1 /**************************************************************************** -

2 ** -

4 ** Contact: https://www.qt.io/licensing/ -

5 ** -

6 ** This file is part of the QtQml module of the Qt Toolkit. -

7 ** -

8 ** $QT_BEGIN_LICENSE:LGPL$ -

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21 ** packaging of this file. Please review the following information to -

22 ** ensure the GNU Lesser General Public License version 3 requirements -

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25 ** GNU General Public License Usage -

26 ** Alternatively, this file may be used under the terms of the GNU -

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28 ** Public license version 3 or any later version approved by the KDE Free -

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36 ** $QT_END_LICENSE$ -

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38 ****************************************************************************/ -

39 #ifndef QV4LOOKUP_H -

40 #define QV4LOOKUP_H -

41 -

42 // -

43 // W A R N I N G -

44 // ------------- -

45 // -

46 // This file is not part of the Qt API. It exists purely as an -

47 // implementation detail. This header file may change from version to -

48 // version without notice, or even be removed. -

49 // -

50 // We mean it. -

51 // -

52 -

53 #include "qv4global_p.h" -

54 #include "qv4runtime_p.h" -

55 #include "qv4engine_p.h" -

56 #include "qv4context_p.h" -

57 -

58 #if !defined(V4_BOOTSTRAP) -

59 #include "qv4object_p.h" -

60 #include "qv4internalclass_p.h" -

61 #endif -

62 -

63 QT_BEGIN_NAMESPACE -

64 -

65 namespace QV4 { -

66 -

67 struct Lookup { -

68 union { -

69 ReturnedValue (*getter)(Lookup *l, ExecutionEngine *engine, const Value &object); -

70 ReturnedValue (*globalGetter)(Lookup *l, ExecutionEngine *engine); -

71 bool (*setter)(Lookup *l, ExecutionEngine *engine, Value &object, const Value &v); -

72 }; -

73 union { -

74 struct { -

75 Heap::Base *h1; -

76 Heap::Base *h2; -

77 quintptr unused; -

78 quintptr unused2; -

79 } markDef; -

80 struct { -

81 Heap::InternalClass *ic; -

82 quintptr _unused; -

83 int offset; -

84 } objectLookup; -

85 struct { -

86 quintptr protoId; -

87 quintptr _unused; -

88 const Value *data; -

89 } protoLookup; -

90 struct { -

91 Heap::InternalClass *ic; -

92 Heap::InternalClass *ic2; -

93 int offset; -

94 int offset2; -

95 } objectLookupTwoClasses; -

96 struct { -

97 quintptr protoId; -

98 quintptr protoId2; -

99 const Value *data; -

100 const Value *data2; -

101 } protoLookupTwoClasses; -

102 struct { -

103 // Make sure the next two values are in sync with protoLookup -

104 quintptr protoId; -

105 Heap::Object *proto; -

106 const Value *data; -

107 quintptr type; -

108 } primitiveLookup; -

109 struct { -

110 Heap::InternalClass *newClass; -

111 quintptr protoId; -

112 int offset; -

113 } insertionLookup; -

114 struct { -

115 quintptr _unused; -

116 quintptr _unused2; -

117 uint index; -

118 } indexedLookup; -

119 }; -

120 uint nameIndex; -

121 -

122 ReturnedValue resolveGetter(ExecutionEngine *engine, const Object *object); -

123 ReturnedValue resolvePrimitiveGetter(ExecutionEngine *engine, const Value &object); -

124 ReturnedValue resolveGlobalGetter(ExecutionEngine *engine); -

125 void resolveProtoGetter(PropertyKey name, const Heap::Object *proto); -

126 -

127 static ReturnedValue getterGeneric(Lookup *l, ExecutionEngine *engine, const Value &object); -

128 static ReturnedValue getterTwoClasses(Lookup *l, ExecutionEngine *engine, const Value &object); -

129 static ReturnedValue getterFallback(Lookup *l, ExecutionEngine *engine, const Value &object); -

130 -

131 static ReturnedValue getter0MemberData(Lookup *l, ExecutionEngine *engine, const Value &object); -

132 static ReturnedValue getter0Inline(Lookup *l, ExecutionEngine *engine, const Value &object); -

133 static ReturnedValue getterProto(Lookup *l, ExecutionEngine *engine, const Value &object); -

134 static ReturnedValue getter0Inlinegetter0Inline(Lookup *l, ExecutionEngine *engine, const Value &object); -

135 static ReturnedValue getter0Inlinegetter0MemberData(Lookup *l, ExecutionEngine *engine, const Value &object); -

136 static ReturnedValue getter0MemberDatagetter0MemberData(Lookup *l, ExecutionEngine *engine, const Value &object); -

137 static ReturnedValue getterProtoTwoClasses(Lookup *l, ExecutionEngine *engine, const Value &object); -

138 static ReturnedValue getterAccessor(Lookup *l, ExecutionEngine *engine, const Value &object); -

139 static ReturnedValue getterProtoAccessor(Lookup *l, ExecutionEngine *engine, const Value &object); -

140 static ReturnedValue getterProtoAccessorTwoClasses(Lookup *l, ExecutionEngine *engine, const Value &object); -

141 static ReturnedValue getterIndexed(Lookup *l, ExecutionEngine *engine, const Value &object); -

142 -

143 static ReturnedValue primitiveGetterProto(Lookup *l, ExecutionEngine *engine, const Value &object); -

144 static ReturnedValue primitiveGetterAccessor(Lookup *l, ExecutionEngine *engine, const Value &object); -

145 static ReturnedValue stringLengthGetter(Lookup *l, ExecutionEngine *engine, const Value &object); -

146 -

147 static ReturnedValue globalGetterGeneric(Lookup *l, ExecutionEngine *engine); -

148 static ReturnedValue globalGetterProto(Lookup *l, ExecutionEngine *engine); -

149 static ReturnedValue globalGetterProtoAccessor(Lookup *l, ExecutionEngine *engine); -

150 -

151 bool resolveSetter(ExecutionEngine *engine, Object *object, const Value &value); -

152 static bool setterGeneric(Lookup *l, ExecutionEngine *engine, Value &object, const Value &value); -

153 static bool setterTwoClasses(Lookup *l, ExecutionEngine *engine, Value &object, const Value &value); -

154 static bool setterFallback(Lookup *l, ExecutionEngine *engine, Value &object, const Value &value); -

155 static bool setter0(Lookup *l, ExecutionEngine *engine, Value &object, const Value &value); -

156 static bool setter0Inline(Lookup *l, ExecutionEngine *engine, Value &object, const Value &value); -

157 static bool setter0setter0(Lookup *l, ExecutionEngine *engine, Value &object, const Value &value); -

158 static bool setterInsert(Lookup *l, ExecutionEngine *engine, Value &object, const Value &value); -

159 static bool arrayLengthSetter(Lookup *l, ExecutionEngine *engine, Value &object, const Value &value); -

160 -

161 void markObjects(MarkStack *stack) { -

162

if (markDef.h1 && !(reinterpret_cast<quintptr>(markDef.h1) & 1))

markDef.h1	Description
TRUE	evaluated 329030 times by 1 test Evaluated by: tst_ecmascripttests
FALSE	evaluated 406304 times by 1 test Evaluated by: tst_ecmascripttests

!(reinterpret_...rkDef.h1) & 1)	Description
TRUE	evaluated 73155 times by 1 test Evaluated by: tst_ecmascripttests
FALSE	evaluated 255884 times by 1 test Evaluated by: tst_ecmascripttests

73155-406304

163

markDef.h1->mark(stack);

executed 73155 times by 1 test: markDef.h1->mark(stack);

Executed by:

tst_ecmascripttests

73155

164

if (markDef.h2 && !(reinterpret_cast<quintptr>(markDef.h2) & 1))

markDef.h2	Description
TRUE	evaluated 49216 times by 1 test Evaluated by: tst_ecmascripttests
FALSE	evaluated 686079 times by 1 test Evaluated by: tst_ecmascripttests

!(reinterpret_...rkDef.h2) & 1)	Description
TRUE	evaluated 8116 times by 1 test Evaluated by: tst_ecmascripttests
FALSE	evaluated 41100 times by 1 test Evaluated by: tst_ecmascripttests

8116-686079

165

markDef.h2->mark(stack);

executed 8116 times by 1 test: markDef.h2->mark(stack);

Executed by:

tst_ecmascripttests

8116

166

}

executed 735288 times by 1 test: end of block

Executed by:

tst_ecmascripttests

735288

167 -

168 void clear() { -

169 memset(&markDef, 0, sizeof(markDef)); -

170

}

never executed: end of block

171 }; -

172 -

173 Q_STATIC_ASSERT(std::is_standard_layout<Lookup>::value); -

174 // Ensure that these offsets are always at this point to keep generated code compatible -

175 // across 32-bit and 64-bit (matters when cross-compiling). -

176 Q_STATIC_ASSERT(offsetof(Lookup, getter) == 0); -

177 -

178 } -

179 -

180 QT_END_NAMESPACE -

181 -

182 #endif -

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