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https://github.com/JakeHillion/object-introspection.git
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688d483c0c
We previously moved container identification later in CodeGen in order to preserve information for AlignmentCalc. However, Flattener needs to know if a class is a container in order to apply its special handling for this case. This new approach moves container identification in front of Flattener, but has Container own a type node, representing its layout. This underlying type node can be used for calculating a container's alignment in a later pass.
55 lines
1.4 KiB
C++
55 lines
1.4 KiB
C++
/*
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* Copyright (c) Meta Platforms, Inc. and affiliates.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#pragma once
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#include <string>
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#include <vector>
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#include "NodeTracker.h"
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#include "PassManager.h"
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#include "Types.h"
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#include "Visitor.h"
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namespace oi::detail::type_graph {
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/*
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* Flattener
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*
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* Flattens classes by removing parents and adding their attributes directly
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* into derived classes.
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*/
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class Flattener : public RecursiveVisitor {
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public:
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static Pass createPass();
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Flattener(NodeTracker& tracker) : tracker_(tracker) {
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}
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using RecursiveVisitor::accept;
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void accept(Type& type) override;
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void visit(Class& c) override;
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static const inline std::string ParentPrefix = "__oi_parent";
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private:
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NodeTracker& tracker_;
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std::vector<Member> flattened_members_;
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std::vector<uint64_t> offset_stack_;
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};
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} // namespace oi::detail::type_graph
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