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to reflect the new license. We understand that people may be surprised that we're moving the header entirely to discuss the new license. We checked this carefully with the Foundation's lawyer and we believe this is the correct approach. Essentially, all code in the project is now made available by the LLVM project under our new license, so you will see that the license headers include that license only. Some of our contributors have contributed code under our old license, and accordingly, we have retained a copy of our old license notice in the top-level files in each project and repository. llvm-svn: 351636
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 llvm::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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