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/PDBSymDumper.h"
16 #include "llvm/DebugInfo/PDB/PDBSymbolData.h"
17 #include "llvm/DebugInfo/PDB/PDBSymbolTypeFunctionSig.h"
18 #include "llvm/DebugInfo/PDB/PDBTypes.h"
20 #include <unordered_set>
25 using namespace llvm::pdb;
28 class FunctionArgEnumerator : public IPDBEnumChildren<PDBSymbolData> {
30 typedef ConcreteSymbolEnumerator<PDBSymbolData> ArgEnumeratorType;
32 FunctionArgEnumerator(const IPDBSession &PDBSession,
33 const PDBSymbolFunc &PDBFunc)
34 : Session(PDBSession), Func(PDBFunc) {
35 // Arguments can appear multiple times if they have live range
36 // information, so we only take the first occurrence.
37 std::unordered_set<std::string> SeenNames;
38 auto DataChildren = Func.findAllChildren<PDBSymbolData>();
39 while (auto Child = DataChildren->getNext()) {
40 if (Child->getDataKind() == PDB_DataKind::Param) {
41 std::string Name = Child->getName();
42 if (SeenNames.find(Name) != SeenNames.end())
44 Args.push_back(std::move(Child));
45 SeenNames.insert(Name);
51 uint32_t getChildCount() const override { return Args.size(); }
53 std::unique_ptr<PDBSymbolData>
54 getChildAtIndex(uint32_t Index) const override {
55 if (Index >= Args.size())
58 return Session.getConcreteSymbolById<PDBSymbolData>(
59 Args[Index]->getSymIndexId());
62 std::unique_ptr<PDBSymbolData> getNext() override {
63 if (CurIter == Args.end())
65 const auto &Result = **CurIter;
67 return Session.getConcreteSymbolById<PDBSymbolData>(Result.getSymIndexId());
70 void reset() override { CurIter = Args.empty() ? Args.end() : Args.begin(); }
72 FunctionArgEnumerator *clone() const override {
73 return new FunctionArgEnumerator(Session, Func);
77 typedef std::vector<std::unique_ptr<PDBSymbolData>> ArgListType;
78 const IPDBSession &Session;
79 const PDBSymbolFunc &Func;
81 ArgListType::const_iterator CurIter;
85 PDBSymbolFunc::PDBSymbolFunc(const IPDBSession &PDBSession,
86 std::unique_ptr<IPDBRawSymbol> Symbol)
87 : PDBSymbol(PDBSession, std::move(Symbol)) {
88 assert(RawSymbol->getSymTag() == PDB_SymType::Function);
91 std::unique_ptr<IPDBEnumChildren<PDBSymbolData>>
92 PDBSymbolFunc::getArguments() const {
93 return llvm::make_unique<FunctionArgEnumerator>(Session, *this);
96 void PDBSymbolFunc::dump(PDBSymDumper &Dumper) const { Dumper.dump(*this); }
98 bool PDBSymbolFunc::isDestructor() const {
99 std::string Name = getName();
104 if (Name == "__vecDelDtor")