mirror of
https://github.com/JakeHillion/object-introspection.git
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63 lines
1.7 KiB
C++
63 lines
1.7 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 <unordered_set>
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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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class TypeGraph;
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/*
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* AddPadding
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*
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* Adds members to classes to represent padding. This is necessary until we have
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* complete alignment information from DWARF, otherwise our classes may be
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* undersized.
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*/
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class AddPadding final : public RecursiveVisitor {
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public:
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static Pass createPass();
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explicit AddPadding(TypeGraph& typeGraph) : typeGraph_(typeGraph) {
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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 MemberPrefix = "__oi_padding";
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private:
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std::unordered_set<Type*> visited_;
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TypeGraph& typeGraph_;
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void addPadding(const Member& prevMember,
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uint64_t paddingEndBits,
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std::vector<Member>& paddedMembers);
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void addPadding(uint64_t paddingStartBits,
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uint64_t paddingEndBits,
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std::vector<Member>& paddedMembers);
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};
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} // namespace oi::detail::type_graph
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