LLVM  3.7.0
PDBSymbolFunc.cpp
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1 //===- PDBSymbolFunc.cpp - --------------------------------------*- C++ -*-===//
2 //
3 // The LLVM Compiler Infrastructure
4 //
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9 
11 
20 
21 #include <unordered_set>
22 #include <utility>
23 #include <vector>
24 
25 using namespace llvm;
26 
27 namespace {
28 class FunctionArgEnumerator : public IPDBEnumChildren<PDBSymbolData> {
29 public:
30  typedef ConcreteSymbolEnumerator<PDBSymbolData> ArgEnumeratorType;
31 
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())
43  continue;
44  Args.push_back(std::move(Child));
45  SeenNames.insert(Name);
46  }
47  }
48  reset();
49  }
50 
51  uint32_t getChildCount() const override { return Args.size(); }
52 
53  std::unique_ptr<PDBSymbolData>
54  getChildAtIndex(uint32_t Index) const override {
55  if (Index >= Args.size())
56  return nullptr;
57 
58  return Session.getConcreteSymbolById<PDBSymbolData>(
59  Args[Index]->getSymIndexId());
60  }
61 
62  std::unique_ptr<PDBSymbolData> getNext() override {
63  if (CurIter == Args.end())
64  return nullptr;
65  const auto &Result = **CurIter;
66  ++CurIter;
67  return Session.getConcreteSymbolById<PDBSymbolData>(Result.getSymIndexId());
68  }
69 
70  void reset() override { CurIter = Args.empty() ? Args.end() : Args.begin(); }
71 
72  FunctionArgEnumerator *clone() const override {
73  return new FunctionArgEnumerator(Session, Func);
74  }
75 
76 private:
77  typedef std::vector<std::unique_ptr<PDBSymbolData>> ArgListType;
78  const IPDBSession &Session;
79  const PDBSymbolFunc &Func;
80  ArgListType Args;
81  ArgListType::const_iterator CurIter;
82 };
83 }
84 
86  std::unique_ptr<IPDBRawSymbol> Symbol)
87  : PDBSymbol(PDBSession, std::move(Symbol)) {}
88 
89 std::unique_ptr<PDBSymbolTypeFunctionSig> PDBSymbolFunc::getSignature() const {
91 }
92 
93 std::unique_ptr<IPDBEnumChildren<PDBSymbolData>>
95  return llvm::make_unique<FunctionArgEnumerator>(Session, *this);
96 }
97 
98 std::unique_ptr<PDBSymbolTypeUDT> PDBSymbolFunc::getClassParent() const {
99  return Session.getConcreteSymbolById<PDBSymbolTypeUDT>(getClassParentId());
100 }
101 
102 void PDBSymbolFunc::dump(PDBSymDumper &Dumper) const { Dumper.dump(*this); }
std::unique_ptr< PDBSymbolTypeUDT > getClassParent() const
PDBSymbolFunc(const IPDBSession &PDBSession, std::unique_ptr< IPDBRawSymbol > FuncSymbol)
virtual void dump(const PDBSymbolAnnotation &Symbol)
PDBSymbol defines the base of the inheritance hierarchy for concrete symbol types (e...
Definition: PDBSymbol.h:42
std::unique_ptr< PDBSymbolTypeFunctionSig > getSignature() const
std::unique_ptr< IPDBEnumChildren< PDBSymbolData > > getArguments() const
void dump(PDBSymDumper &Dumper) const override
Dumps the contents of a symbol a raw_ostream.
const IPDBSession & Session
Definition: PDBSymbol.h:91
IPDBSession defines an interface used to provide a context for querying debug information from a debu...
Definition: IPDBSession.h:24
std::unique_ptr< T > getConcreteSymbolById(uint32_t SymbolId) const
Definition: IPDBSession.h:34