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// Copyright 2013 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 MOJO_PUBLIC_CPP_BINDINGS_ARRAY_H_
#define MOJO_PUBLIC_CPP_BINDINGS_ARRAY_H_
#include <string.h>
#include <algorithm>
#include <string>
#include <vector>
#include "mojo/public/cpp/bindings/lib/array_internal.h"
#include "mojo/public/cpp/bindings/lib/template_util.h"
#include "mojo/public/cpp/bindings/type_converter.h"
namespace mojo {
// Provides read-only access to array data.
template <typename T>
class Array {
MOJO_MOVE_ONLY_TYPE_FOR_CPP_03(Array, RValue)
public:
typedef internal::ArrayTraits<T, internal::IsMoveOnlyType<T>::value>
Traits;
typedef typename Traits::ConstRefType ConstRefType;
typedef typename Traits::RefType RefType;
typedef typename Traits::StorageType StorageType;
typedef typename Traits::ForwardType ForwardType;
typedef internal::Array_Data<typename internal::WrapperTraits<T>::DataType>
Data_;
Array() : is_null_(true) {}
explicit Array(size_t size) : vec_(size), is_null_(false) {
Traits::Initialize(&vec_);
}
~Array() { Traits::Finalize(&vec_); }
Array(RValue other) : is_null_(true) { Take(other.object); }
Array& operator=(RValue other) {
Take(other.object);
return *this;
}
static Array New(size_t size) {
return Array(size).Pass();
}
template <typename U>
static Array From(const U& other) {
return TypeConverter<Array, U>::ConvertFrom(other);
}
template <typename U>
U To() const {
return TypeConverter<Array, U>::ConvertTo(*this);
}
void reset() {
if (!vec_.empty()) {
Traits::Finalize(&vec_);
vec_.clear();
}
is_null_ = true;
}
bool is_null() const { return is_null_; }
size_t size() const { return vec_.size(); }
ConstRefType at(size_t offset) const { return Traits::at(&vec_, offset); }
ConstRefType operator[](size_t offset) const { return at(offset); }
RefType at(size_t offset) { return Traits::at(&vec_, offset); }
RefType operator[](size_t offset) { return at(offset); }
void push_back(ForwardType value) {
is_null_ = false;
Traits::PushBack(&vec_, value);
}
void resize(size_t size) {
is_null_ = false;
Traits::Resize(&vec_, size);
}
const std::vector<StorageType>& storage() const {
return vec_;
}
operator const std::vector<StorageType>&() const {
return vec_;
}
void Swap(Array* other) {
std::swap(is_null_, other->is_null_);
vec_.swap(other->vec_);
}
void Swap(std::vector<StorageType>* other) {
is_null_ = false;
vec_.swap(*other);
}
private:
typedef std::vector<StorageType> Array::*Testable;
public:
operator Testable() const { return is_null_ ? 0 : &Array::vec_; }
private:
void Take(Array* other) {
reset();
Swap(other);
}
std::vector<StorageType> vec_;
bool is_null_;
};
template <typename T, typename E>
class TypeConverter<Array<T>, std::vector<E> > {
public:
static Array<T> ConvertFrom(const std::vector<E>& input) {
Array<T> result(input.size());
for (size_t i = 0; i < input.size(); ++i)
result[i] = TypeConverter<T, E>::ConvertFrom(input[i]);
return result.Pass();
}
static std::vector<E> ConvertTo(const Array<T>& input) {
std::vector<E> result;
if (!input.is_null()) {
result.resize(input.size());
for (size_t i = 0; i < input.size(); ++i)
result[i] = TypeConverter<T, E>::ConvertTo(input[i]);
}
return result;
}
};
} // namespace mojo
#endif // MOJO_PUBLIC_CPP_BINDINGS_ARRAY_H_
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