1 //===- PDBSymbolFunc.cpp - --------------------------------------*- C++ -*-===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 #include "llvm/DebugInfo/PDB/PDBSymbolFunc.h"
12 #include "llvm/DebugInfo/PDB/ConcreteSymbolEnumerator.h"
13 #include "llvm/DebugInfo/PDB/IPDBEnumChildren.h"
14 #include "llvm/DebugInfo/PDB/IPDBSession.h"
15 #include "llvm/DebugInfo/PDB/PDBSymbolData.h"
16 #include "llvm/DebugInfo/PDB/PDBSymbolTypeFunctionSig.h"
17 #include "llvm/DebugInfo/PDB/PDBSymbolTypeUDT.h"
18 #include "llvm/DebugInfo/PDB/PDBSymDumper.h"
19 #include "llvm/DebugInfo/PDB/PDBTypes.h"
21 #include <unordered_set>
26 using namespace llvm::pdb;
29 class FunctionArgEnumerator : public IPDBEnumChildren<PDBSymbolData> {
31 typedef ConcreteSymbolEnumerator<PDBSymbolData> ArgEnumeratorType;
33 FunctionArgEnumerator(const IPDBSession &PDBSession,
34 const PDBSymbolFunc &PDBFunc)
35 : Session(PDBSession), Func(PDBFunc) {
36 // Arguments can appear multiple times if they have live range
37 // information, so we only take the first occurrence.
38 std::unordered_set<std::string> SeenNames;
39 auto DataChildren = Func.findAllChildren<PDBSymbolData>();
40 while (auto Child = DataChildren->getNext()) {
41 if (Child->getDataKind() == PDB_DataKind::Param) {
42 std::string Name = Child->getName();
43 if (SeenNames.find(Name) != SeenNames.end())
45 Args.push_back(std::move(Child));
46 SeenNames.insert(Name);
52 uint32_t getChildCount() const override { return Args.size(); }
54 std::unique_ptr<PDBSymbolData>
55 getChildAtIndex(uint32_t Index) const override {
56 if (Index >= Args.size())
59 return Session.getConcreteSymbolById<PDBSymbolData>(
60 Args[Index]->getSymIndexId());
63 std::unique_ptr<PDBSymbolData> getNext() override {
64 if (CurIter == Args.end())
66 const auto &Result = **CurIter;
68 return Session.getConcreteSymbolById<PDBSymbolData>(Result.getSymIndexId());
71 void reset() override { CurIter = Args.empty() ? Args.end() : Args.begin(); }
73 FunctionArgEnumerator *clone() const override {
74 return new FunctionArgEnumerator(Session, Func);
78 typedef std::vector<std::unique_ptr<PDBSymbolData>> ArgListType;
79 const IPDBSession &Session;
80 const PDBSymbolFunc &Func;
82 ArgListType::const_iterator CurIter;
86 PDBSymbolFunc::PDBSymbolFunc(const IPDBSession &PDBSession,
87 std::unique_ptr<IPDBRawSymbol> Symbol)
88 : PDBSymbol(PDBSession, std::move(Symbol)) {
89 assert(RawSymbol->getSymTag() == PDB_SymType::Function);
92 std::unique_ptr<IPDBEnumChildren<PDBSymbolData>>
93 PDBSymbolFunc::getArguments() const {
94 return llvm::make_unique<FunctionArgEnumerator>(Session, *this);
97 void PDBSymbolFunc::dump(PDBSymDumper &Dumper) const { Dumper.dump(*this); }
99 bool PDBSymbolFunc::isDestructor() const {
100 std::string Name = getName();
105 if (Name == "__vecDelDtor")