1 // Copyright 2014 The Chromium 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 #ifndef TerminatedArrayBuilder_h
5 #define TerminatedArrayBuilder_h
7 #include "wtf/OwnPtr.h"
11 template<typename T, template <typename> class ArrayType = TerminatedArray>
12 class TerminatedArrayBuilder {
13 DISALLOW_ALLOCATION();
14 WTF_MAKE_NONCOPYABLE(TerminatedArrayBuilder);
16 explicit TerminatedArrayBuilder(typename ArrayType<T>::Allocator::PassPtr array)
23 m_capacity = m_count = m_array->size();
26 void grow(size_t count)
33 m_array = ArrayType<T>::Allocator::create(m_capacity);
37 m_array = ArrayType<T>::Allocator::resize(m_array.release(), m_capacity);
38 m_array->at(m_count - 1).setLastInArray(false);
41 void append(const T& item)
43 RELEASE_ASSERT(m_count < m_capacity);
44 ASSERT(!item.isLastInArray());
45 m_array->at(m_count++) = item;
48 typename ArrayType<T>::Allocator::PassPtr release()
50 RELEASE_ASSERT(m_count == m_capacity);
52 m_array->at(m_count - 1).setLastInArray(true);
54 return m_array.release();
61 for (size_t i = 0; i < m_count; ++i) {
62 bool isLastInArray = (i + 1 == m_count);
63 ASSERT(m_array->at(i).isLastInArray() == isLastInArray);
67 void assertValid() { }
70 typename ArrayType<T>::Allocator::Ptr m_array;
77 using WTF::TerminatedArrayBuilder;
79 #endif // TerminatedArrayBuilder_h