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// Copyright (c) 2010 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef BASE_SCOPED_VECTOR_H_
#define BASE_SCOPED_VECTOR_H_
#pragma once
#include <vector>
#include "base/basictypes.h"
#include "base/stl_util-inl.h"
// ScopedVector wraps a vector deleting the elements from its
// destructor.
template <class T>
class ScopedVector {
public:
typedef typename std::vector<T*>::iterator iterator;
typedef typename std::vector<T*>::const_iterator const_iterator;
typedef typename std::vector<T*>::reverse_iterator reverse_iterator;
typedef typename std::vector<T*>::const_reverse_iterator
const_reverse_iterator;
ScopedVector() {}
~ScopedVector() { reset(); }
std::vector<T*>* operator->() { return &v; }
const std::vector<T*>* operator->() const { return &v; }
T*& operator[](size_t i) { return v[i]; }
const T* operator[](size_t i) const { return v[i]; }
bool empty() const { return v.empty(); }
size_t size() const { return v.size(); }
reverse_iterator rbegin() { return v.rbegin(); }
const_reverse_iterator rbegin() const { return v.rbegin(); }
reverse_iterator rend() { return v.rend(); }
const_reverse_iterator rend() const { return v.rend(); }
iterator begin() { return v.begin(); }
const_iterator begin() const { return v.begin(); }
iterator end() { return v.end(); }
const_iterator end() const { return v.end(); }
void push_back(T* elem) { v.push_back(elem); }
std::vector<T*>& get() { return v; }
const std::vector<T*>& get() const { return v; }
void swap(ScopedVector<T>& other) { v.swap(other.v); }
void release(std::vector<T*>* out) {
out->swap(v);
v.clear();
}
void reset() { STLDeleteElements(&v); }
void reserve(size_t capacity) { v.reserve(capacity); }
void resize(size_t new_size) { v.resize(new_size); }
// Lets the ScopedVector take ownership of |x|.
iterator insert(iterator position, T* x) {
return v.insert(position, x);
}
iterator erase(iterator position) {
delete *position;
return v.erase(position);
}
iterator erase(iterator first, iterator last) {
STLDeleteContainerPointers(first, last);
return v.erase(first, last);
}
// Like |erase()|, but doesn't delete the element at |position|.
iterator weak_erase(iterator position) {
return v.erase(position);
}
// Like |erase()|, but doesn't delete the elements in [first, last).
iterator weak_erase(iterator first, iterator last) {
return v.erase(first, last);
}
private:
std::vector<T*> v;
DISALLOW_COPY_AND_ASSIGN(ScopedVector);
};
#endif // BASE_SCOPED_VECTOR_H_
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