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39 | #ifndef QV4ARRAYBUFFER_H |
40 | #define QV4ARRAYBUFFER_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 "qv4object_p.h" |
54 | #include "qv4functionobject_p.h" |
55 | |
56 | QT_BEGIN_NAMESPACE |
57 | |
58 | namespace QV4 { |
59 | |
60 | namespace Heap { |
61 | |
62 | struct SharedArrayBufferCtor : FunctionObject { |
63 | void init(QV4::ExecutionContext *scope); |
64 | }; |
65 | |
66 | struct ArrayBufferCtor : SharedArrayBufferCtor { |
67 | void init(QV4::ExecutionContext *scope); |
68 | }; |
69 | |
70 | struct Q_QML_PRIVATE_EXPORT SharedArrayBuffer : Object { |
71 | void init(size_t length); |
72 | void init(const QByteArray& array); |
73 | void destroy(); |
74 | QTypedArrayData<char> *data; |
75 | bool isShared; |
76 | |
77 | uint byteLength() const { return data ? data->size : 0; } |
78 | |
79 | bool isDetachedBuffer() const { return !data; } |
80 | bool isSharedArrayBuffer() const { return isShared; } |
81 | }; |
82 | |
83 | struct Q_QML_PRIVATE_EXPORT ArrayBuffer : SharedArrayBuffer { |
84 | void init(size_t length) { |
85 | SharedArrayBuffer::init(length); |
86 | isShared = false; |
87 | } |
88 | void init(const QByteArray& array) { |
89 | SharedArrayBuffer::init(array); |
90 | isShared = false; |
91 | } |
92 | void detachArrayBuffer() { |
93 | if (data && !data->ref.deref()) |
94 | QTypedArrayData<char>::deallocate(data); |
95 | data = nullptr; |
96 | } |
97 | }; |
98 | |
99 | |
100 | } |
101 | |
102 | struct SharedArrayBufferCtor : FunctionObject |
103 | { |
104 | V4_OBJECT2(SharedArrayBufferCtor, FunctionObject) |
105 | |
106 | static ReturnedValue virtualCallAsConstructor(const FunctionObject *f, const Value *argv, int argc, const Value *); |
107 | static ReturnedValue virtualCall(const FunctionObject *f, const Value *thisObject, const Value *argv, int argc); |
108 | }; |
109 | |
110 | struct ArrayBufferCtor : SharedArrayBufferCtor |
111 | { |
112 | V4_OBJECT2(ArrayBufferCtor, SharedArrayBufferCtor) |
113 | |
114 | static ReturnedValue virtualCallAsConstructor(const FunctionObject *f, const Value *argv, int argc, const Value *); |
115 | |
116 | static ReturnedValue method_isView(const FunctionObject *, const Value *thisObject, const Value *argv, int argc); |
117 | }; |
118 | |
119 | struct Q_QML_PRIVATE_EXPORT SharedArrayBuffer : Object |
120 | { |
121 | V4_OBJECT2(SharedArrayBuffer, Object) |
122 | V4_NEEDS_DESTROY |
123 | V4_PROTOTYPE(sharedArrayBufferPrototype) |
124 | |
125 | QByteArray asByteArray() const; |
126 | uint byteLength() const { return d()->byteLength(); } |
127 | char *data() { Q_ASSERT(d()->data); return d()->data->data(); } |
128 | const char *constData() { Q_ASSERT(d()->data); return d()->data->data(); } |
129 | |
130 | bool isShared() { return d()->data->ref.isShared(); } |
131 | bool isDetachedBuffer() const { return !d()->data; } |
132 | bool isSharedArrayBuffer() const { return d()->isShared; } |
133 | }; |
134 | |
135 | struct Q_QML_PRIVATE_EXPORT ArrayBuffer : SharedArrayBuffer |
136 | { |
137 | V4_OBJECT2(ArrayBuffer, SharedArrayBuffer) |
138 | V4_NEEDS_DESTROY |
139 | V4_PROTOTYPE(arrayBufferPrototype) |
140 | |
141 | QByteArray asByteArray() const; |
142 | uint byteLength() const { return d()->byteLength(); } |
143 | char *data() { detach(); return d()->data ? d()->data->data() : nullptr; } |
144 | // ### is that detach needed? |
145 | const char *constData() { detach(); return d()->data ? d()->data->data() : nullptr; } |
146 | |
147 | bool isShared() { return d()->data && d()->data->ref.isShared(); } |
148 | void detach(); |
149 | void detachArrayBuffer() { d()->detachArrayBuffer(); } |
150 | }; |
151 | |
152 | struct SharedArrayBufferPrototype : Object |
153 | { |
154 | void init(ExecutionEngine *engine, Object *ctor); |
155 | |
156 | static ReturnedValue method_get_byteLength(const FunctionObject *, const Value *thisObject, const Value *argv, int argc); |
157 | static ReturnedValue method_slice(const FunctionObject *, const Value *thisObject, const Value *argv, int argc); |
158 | |
159 | static ReturnedValue slice(const FunctionObject *b, const Value *thisObject, const Value *argv, int argc, bool shared); |
160 | }; |
161 | |
162 | struct ArrayBufferPrototype : SharedArrayBufferPrototype |
163 | { |
164 | void init(ExecutionEngine *engine, Object *ctor); |
165 | |
166 | static ReturnedValue method_get_byteLength(const FunctionObject *, const Value *thisObject, const Value *argv, int argc); |
167 | static ReturnedValue method_slice(const FunctionObject *, const Value *thisObject, const Value *argv, int argc); |
168 | static ReturnedValue method_toString(const FunctionObject *, const Value *thisObject, const Value *argv, int argc); |
169 | }; |
170 | |
171 | |
172 | } // namespace QV4 |
173 | |
174 | QT_END_NAMESPACE |
175 | |
176 | #endif |
177 | |