src/dawn/common/ityp_stack_vec.h

// Copyright 2020 The Dawn Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

#ifndef SRC_DAWN_COMMON_ITYP_STACK_VEC_H_
#define SRC_DAWN_COMMON_ITYP_STACK_VEC_H_

#include <limits>
#include <vector>

#include "dawn/common/Assert.h"
#include "dawn/common/StackContainer.h"
#include "dawn/common/UnderlyingType.h"

namespace ityp {

template <typename Index, typename Value, size_t StaticCapacity>
class stack_vec : private StackVector<Value, StaticCapacity> {
    using I = UnderlyingType<Index>;
    using Base = StackVector<Value, StaticCapacity>;
    using VectorBase = std::vector<Value, StackAllocator<Value, StaticCapacity>>;
    static_assert(StaticCapacity <= std::numeric_limits<I>::max());

  public:
    stack_vec() : Base() {}
    explicit stack_vec(Index size) : Base() { this->container().resize(static_cast<I>(size)); }

    Value& operator[](Index i) {
        ASSERT(i < size());
        return Base::operator[](static_cast<I>(i));
    }

    constexpr const Value& operator[](Index i) const {
        ASSERT(i < size());
        return Base::operator[](static_cast<I>(i));
    }

    void resize(Index size) { this->container().resize(static_cast<I>(size)); }

    void reserve(Index size) { this->container().reserve(static_cast<I>(size)); }

    Value* data() { return this->container().data(); }

    const Value* data() const { return this->container().data(); }

    typename VectorBase::iterator begin() noexcept { return this->container().begin(); }

    typename VectorBase::const_iterator begin() const noexcept { return this->container().begin(); }

    typename VectorBase::iterator end() noexcept { return this->container().end(); }

    typename VectorBase::const_iterator end() const noexcept { return this->container().end(); }

    typename VectorBase::reference front() { return this->container().front(); }

    typename VectorBase::const_reference front() const { return this->container().front(); }

    typename VectorBase::reference back() { return this->container().back(); }

    typename VectorBase::const_reference back() const { return this->container().back(); }

    Index size() const { return Index(static_cast<I>(this->container().size())); }
};

}  // namespace ityp

#endif  // SRC_DAWN_COMMON_ITYP_STACK_VEC_H_