object-introspection/oi/type_graph/TypeGraph.h
Alastair Robertson 03429f3da9 TypeGraph: Remove NodeTracker from the TypeGraph class
The TypeGraph class should only be responsible for storing Type nodes.
Traversing the graph and tracking which nodes have been visited should
not be included there.

Passes now take a NodeTrackerHolder as an input parameter, which
provides access to a zeroed-out NodeTracker.
2023-08-24 15:01:45 +01:00

92 lines
2.7 KiB
C++

/*
* Copyright (c) Meta Platforms, Inc. and affiliates.
*
* 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.
*/
#pragma once
#include <functional>
#include <memory>
#include <vector>
#include "Types.h"
namespace oi::detail::type_graph {
/*
* TypeGraph
*
* Holds the nodes and metadata which form a type graph.
*/
class TypeGraph {
public:
size_t size() const noexcept {
return types_.size();
}
// TODO provide iterator instead of direct vector access?
std::vector<std::reference_wrapper<Type>>& rootTypes() {
return rootTypes_;
}
const std::vector<std::reference_wrapper<Type>>& rootTypes() const {
return rootTypes_;
}
void addRoot(Type& type) {
rootTypes_.push_back(type);
}
// Override of the generic makeType function that returns singleton Primitive
// objects
template <typename T>
Primitive& makeType(Primitive::Kind kind);
template <typename T, typename... Args>
T& makeType(NodeId id, Args&&... args) {
static_assert(T::has_node_id, "Unnecessary node ID provided");
next_id_ = std::max(next_id_, id + 1);
auto type_unique_ptr = std::make_unique<T>(id, std::forward<Args>(args)...);
auto type_raw_ptr = type_unique_ptr.get();
types_.push_back(std::move(type_unique_ptr));
return *type_raw_ptr;
}
template <typename T, typename... Args>
T& makeType(Args&&... args) {
static_assert(!std::is_same_v<T, Primitive>,
"Primitive singleton override should be used");
if constexpr (T::has_node_id) {
// Node ID required
return makeType<T>(next_id_++, std::forward<Args>(args)...);
} else {
// No Node ID
auto type_unique_ptr = std::make_unique<T>(std::forward<Args>(args)...);
auto type_raw_ptr = type_unique_ptr.get();
types_.push_back(std::move(type_unique_ptr));
return *type_raw_ptr;
}
}
// TODO dodgy (use a getter instead to allow returning a const vector):
std::vector<std::reference_wrapper<Type>> finalTypes;
private:
std::vector<std::reference_wrapper<Type>> rootTypes_;
// Store all type objects in vectors for ownership. Order is not significant.
std::vector<std::unique_ptr<Type>> types_;
NodeId next_id_ = 0;
};
} // namespace oi::detail::type_graph