forked from OSchip/llvm-project
112 lines
3.4 KiB
C++
112 lines
3.4 KiB
C++
//===- PDBSymbolFunc.cpp - --------------------------------------*- C++ -*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/DebugInfo/PDB/PDBSymbolFunc.h"
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#include "llvm/DebugInfo/PDB/ConcreteSymbolEnumerator.h"
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#include "llvm/DebugInfo/PDB/IPDBEnumChildren.h"
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#include "llvm/DebugInfo/PDB/IPDBSession.h"
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#include "llvm/DebugInfo/PDB/PDBSymDumper.h"
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#include "llvm/DebugInfo/PDB/PDBSymbolData.h"
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#include "llvm/DebugInfo/PDB/PDBSymbolTypeFunctionSig.h"
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#include "llvm/DebugInfo/PDB/PDBTypes.h"
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#include <unordered_set>
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#include <utility>
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#include <vector>
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using namespace llvm;
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using namespace llvm::pdb;
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namespace {
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class FunctionArgEnumerator : public IPDBEnumChildren<PDBSymbolData> {
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public:
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typedef ConcreteSymbolEnumerator<PDBSymbolData> ArgEnumeratorType;
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FunctionArgEnumerator(const IPDBSession &PDBSession,
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const PDBSymbolFunc &PDBFunc)
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: Session(PDBSession), Func(PDBFunc) {
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// Arguments can appear multiple times if they have live range
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// information, so we only take the first occurrence.
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std::unordered_set<std::string> SeenNames;
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auto DataChildren = Func.findAllChildren<PDBSymbolData>();
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while (auto Child = DataChildren->getNext()) {
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if (Child->getDataKind() == PDB_DataKind::Param) {
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std::string Name = Child->getName();
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if (SeenNames.find(Name) != SeenNames.end())
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continue;
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Args.push_back(std::move(Child));
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SeenNames.insert(Name);
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}
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}
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reset();
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}
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uint32_t getChildCount() const override { return Args.size(); }
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std::unique_ptr<PDBSymbolData>
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getChildAtIndex(uint32_t Index) const override {
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if (Index >= Args.size())
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return nullptr;
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return Session.getConcreteSymbolById<PDBSymbolData>(
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Args[Index]->getSymIndexId());
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}
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std::unique_ptr<PDBSymbolData> getNext() override {
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if (CurIter == Args.end())
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return nullptr;
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const auto &Result = **CurIter;
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++CurIter;
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return Session.getConcreteSymbolById<PDBSymbolData>(Result.getSymIndexId());
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}
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void reset() override { CurIter = Args.empty() ? Args.end() : Args.begin(); }
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private:
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typedef std::vector<std::unique_ptr<PDBSymbolData>> ArgListType;
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const IPDBSession &Session;
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const PDBSymbolFunc &Func;
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ArgListType Args;
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ArgListType::const_iterator CurIter;
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};
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}
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std::unique_ptr<IPDBEnumChildren<PDBSymbolData>>
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PDBSymbolFunc::getArguments() const {
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return std::make_unique<FunctionArgEnumerator>(Session, *this);
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}
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void PDBSymbolFunc::dump(PDBSymDumper &Dumper) const { Dumper.dump(*this); }
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bool PDBSymbolFunc::isDestructor() const {
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std::string Name = getName();
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if (Name.empty())
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return false;
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if (Name[0] == '~')
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return true;
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if (Name == "__vecDelDtor")
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return true;
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return false;
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}
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std::unique_ptr<IPDBEnumLineNumbers> PDBSymbolFunc::getLineNumbers() const {
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auto Len = RawSymbol->getLength();
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return Session.findLineNumbersByAddress(RawSymbol->getVirtualAddress(),
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Len ? Len : 1);
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}
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uint32_t PDBSymbolFunc::getCompilandId() const {
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if (auto Lines = getLineNumbers()) {
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if (auto FirstLine = Lines->getNext()) {
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return FirstLine->getCompilandId();
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}
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}
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return 0;
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}
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