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39
40#ifndef QQMLJSFIXEDPOOLARRAY_P_H
41#define QQMLJSFIXEDPOOLARRAY_P_H
42
43//
44// W A R N I N G
45// -------------
46//
47// This file is not part of the Qt API. It exists purely as an
48// implementation detail. This header file may change from version to
49// version without notice, or even be removed.
50//
51// We mean it.
52//
53
54#include <QtCore/qglobal.h>
55#include <private/qqmljsmemorypool_p.h>
56
57QT_BEGIN_NAMESPACE
58
59namespace QQmlJS {
60
61template <typename T>
62class FixedPoolArray
63{
64 T *data;
65 int count = 0;
66
67public:
68 FixedPoolArray()
69 : data(nullptr)
70 {}
71
72 FixedPoolArray(MemoryPool *pool, int size)
73 { allocate(pool, size); }
74
75 void allocate(MemoryPool *pool, int size)
76 {
77 count = size;
78 data = reinterpret_cast<T*>(pool->allocate(size: count * sizeof(T)));
79 }
80
81 void allocate(MemoryPool *pool, const QVector<T> &vector)
82 {
83 count = vector.count();
84 data = reinterpret_cast<T*>(pool->allocate(size: count * sizeof(T)));
85
86 if (QTypeInfo<T>::isComplex) {
87 for (int i = 0; i < count; ++i)
88 new (data + i) T(vector.at(i));
89 } else if (count) {
90 memcpy(data, static_cast<const void*>(vector.constData()), count * sizeof(T));
91 }
92 }
93
94 template <typename Container>
95 void allocate(MemoryPool *pool, const Container &container)
96 {
97 count = container.count();
98 data = reinterpret_cast<T*>(pool->allocate(size: count * sizeof(T)));
99 typename Container::ConstIterator it = container.constBegin();
100 for (int i = 0; i < count; ++i)
101 new (data + i) T(*it++);
102 }
103
104 int size() const
105 { return count; }
106
107 const T &at(int index) const {
108 Q_ASSERT(index >= 0 && index < count);
109 return data[index];
110 }
111
112 T &at(int index) {
113 Q_ASSERT(index >= 0 && index < count);
114 return data[index];
115 }
116
117 T &operator[](int index) {
118 return at(index);
119 }
120
121
122 int indexOf(const T &value) const {
123 for (int i = 0; i < count; ++i)
124 if (data[i] == value)
125 return i;
126 return -1;
127 }
128
129 const T *begin() const { return data; }
130 const T *end() const { return data + count; }
131
132 T *begin() { return data; }
133 T *end() { return data + count; }
134};
135
136} // namespace QQmlJS
137
138QT_END_NAMESPACE
139
140#endif // QQMLJSFIXEDPOOLARRAY_P_H
141

source code of qtdeclarative/src/qml/common/qqmljsfixedpoolarray_p.h