mirror of
https://github.com/encounter/dawn-cmake.git
synced 2025-08-31 07:50:24 +00:00
fbec46fba9
Currently untestable as nothing currently calls Type(const ast::Type* ty). Bug: tint:724 Change-Id: I92dd772acd758b0960a7e9a19f15c91414ab505c Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/49527 Commit-Queue: Ben Clayton <bclayton@google.com> Reviewed-by: Antonio Maiorano <amaiorano@google.com>
100 lines
3.1 KiB
C++
100 lines
3.1 KiB
C++
// Copyright 2021 The Tint 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_SEM_INFO_H_
|
|
#define SRC_SEM_INFO_H_
|
|
|
|
#include <type_traits>
|
|
#include <unordered_map>
|
|
|
|
#include "src/debug.h"
|
|
#include "src/sem/node.h"
|
|
#include "src/sem/type_mappings.h"
|
|
|
|
namespace tint {
|
|
namespace sem {
|
|
|
|
/// Info holds all the resolved semantic information for a Program.
|
|
class Info {
|
|
/// Placeholder type used by Get() to provide a default value for EXPLICIT_SEM
|
|
using InferFromAST = std::nullptr_t;
|
|
|
|
public:
|
|
/// Constructor
|
|
Info();
|
|
|
|
/// Move constructor
|
|
Info(Info&&);
|
|
|
|
/// Destructor
|
|
~Info();
|
|
|
|
/// Move assignment operator
|
|
/// @param rhs the Program to move
|
|
/// @return this Program
|
|
Info& operator=(Info&& rhs);
|
|
|
|
/// Get looks up the semantic information for the AST or type node `node`.
|
|
/// @param node the AST or type node
|
|
/// @returns a pointer to the semantic node if found, otherwise nullptr
|
|
template <typename SEM = InferFromAST,
|
|
typename AST_OR_TYPE = CastableBase,
|
|
typename RESULT =
|
|
std::conditional_t<std::is_same<SEM, InferFromAST>::value,
|
|
SemanticNodeTypeFor<AST_OR_TYPE>,
|
|
SEM>>
|
|
const RESULT* Get(const AST_OR_TYPE* node) const {
|
|
auto it = map.find(node);
|
|
if (it == map.end()) {
|
|
return nullptr;
|
|
}
|
|
return As<RESULT>(it->second);
|
|
}
|
|
|
|
/// Add registers the semantic node `sem_node` for the AST or type node
|
|
/// `node`.
|
|
/// @param node the AST or type node
|
|
/// @param sem_node the semantic node
|
|
template <typename AST_OR_TYPE>
|
|
void Add(const AST_OR_TYPE* node,
|
|
const SemanticNodeTypeFor<AST_OR_TYPE>* sem_node) {
|
|
// Check there's no semantic info already existing for the node
|
|
TINT_ASSERT(Get(node) == nullptr);
|
|
map.emplace(node, sem_node);
|
|
}
|
|
|
|
/// Wrap returns a new Info created with the contents of `inner`.
|
|
/// The Info returned by Wrap is intended to temporarily extend the contents
|
|
/// of an existing immutable Info.
|
|
/// As the copied contents are owned by `inner`, `inner` must not be
|
|
/// destructed or assigned while using the returned Info.
|
|
/// @param inner the immutable Info to extend
|
|
/// @return the Info that wraps `inner`
|
|
static Info Wrap(const Info& inner) {
|
|
Info out;
|
|
out.map = inner.map;
|
|
return out;
|
|
}
|
|
|
|
private:
|
|
// TODO(crbug.com/tint/724): Once finished, this map should be:
|
|
// std::unordered_map<const ast::Node*, const sem::Node*>
|
|
std::unordered_map<const CastableBase*, const CastableBase*> map;
|
|
};
|
|
|
|
} // namespace sem
|
|
} // namespace tint
|
|
|
|
#endif // SRC_SEM_INFO_H_
|