forked from OSchip/llvm-project
103 lines
3.3 KiB
C++
103 lines
3.3 KiB
C++
//===- PDBSymbolFunc.cpp - --------------------------------------*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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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/PDBSymbolData.h"
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#include "llvm/DebugInfo/PDB/PDBSymbolTypeFunctionSig.h"
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#include "llvm/DebugInfo/PDB/PDBSymbolTypeUDT.h"
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#include "llvm/DebugInfo/PDB/PDBSymDumper.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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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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FunctionArgEnumerator *clone() const override {
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return new FunctionArgEnumerator(Session, Func);
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}
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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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PDBSymbolFunc::PDBSymbolFunc(const IPDBSession &PDBSession,
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std::unique_ptr<IPDBRawSymbol> Symbol)
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: PDBSymbol(PDBSession, std::move(Symbol)) {}
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std::unique_ptr<PDBSymbolTypeFunctionSig> PDBSymbolFunc::getSignature() const {
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return Session.getConcreteSymbolById<PDBSymbolTypeFunctionSig>(getTypeId());
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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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std::unique_ptr<PDBSymbolTypeUDT> PDBSymbolFunc::getClassParent() const {
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return Session.getConcreteSymbolById<PDBSymbolTypeUDT>(getClassParentId());
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}
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void PDBSymbolFunc::dump(PDBSymDumper &Dumper) const { Dumper.dump(*this); }
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