mirror of
https://github.com/encounter/dawn-cmake.git
synced 2025-06-25 07:53:32 +00:00
7a4685f448
This CL adds a TypedInteger helper which provides additional type
safety in Dawn. It is a compile-time restriction that prevents integers
of different types from being used interchangably in Debug builds.
It also adds ityp::{array,bitset,span} as helper classes to wrap std::
versions (not span). These accept a template paramter as the Index type
so that typed integers, or enum classes, may be used as a type-safe
index.
For now, bind group layout binding indices use TypedInteger. Future
CLs will convert other indices to be type-safe as well.
Bug: dawn:442
Change-Id: I5b63b1e4f6154322db0227a7788a4e9b8303410e
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/19902
Reviewed-by: Austin Eng <enga@chromium.org>
Commit-Queue: Austin Eng <enga@chromium.org>
52 lines
1.8 KiB
C++
52 lines
1.8 KiB
C++
// 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 COMMON_UNDERLYINGTYPE_H_
|
|
#define COMMON_UNDERLYINGTYPE_H_
|
|
|
|
#include <type_traits>
|
|
|
|
// UnderlyingType is similar to std::underlying_type_t. It is a passthrough for already
|
|
// integer types which simplifies getting the underlying primitive type for an arbitrary
|
|
// template parameter. It includes a specialization for detail::TypedIntegerImpl which yields
|
|
// the wrapped integer type.
|
|
namespace detail {
|
|
template <typename T, typename Enable = void>
|
|
struct UnderlyingTypeImpl;
|
|
|
|
template <typename I>
|
|
struct UnderlyingTypeImpl<I, typename std::enable_if_t<std::is_integral<I>::value>> {
|
|
using type = I;
|
|
};
|
|
|
|
template <typename E>
|
|
struct UnderlyingTypeImpl<E, typename std::enable_if_t<std::is_enum<E>::value>> {
|
|
using type = std::underlying_type_t<E>;
|
|
};
|
|
|
|
// Forward declare the TypedInteger impl.
|
|
template <typename Tag, typename T>
|
|
class TypedIntegerImpl;
|
|
|
|
template <typename Tag, typename I>
|
|
struct UnderlyingTypeImpl<TypedIntegerImpl<Tag, I>> {
|
|
using type = typename UnderlyingTypeImpl<I>::type;
|
|
};
|
|
} // namespace detail
|
|
|
|
template <typename T>
|
|
using UnderlyingType = typename detail::UnderlyingTypeImpl<T>::type;
|
|
|
|
#endif // COMMON_UNDERLYINGTYPE_H_
|