PDBSymbolTypeFunctionSig.cpp revision 284734 
1//===- PDBSymbolTypeFunctionSig.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
10#include "llvm/DebugInfo/PDB/PDBSymbolTypeFunctionSig.h"
11
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/PDBSymbol.h"
16#include "llvm/DebugInfo/PDB/PDBSymbolTypeFunctionArg.h"
17#include "llvm/DebugInfo/PDB/PDBSymDumper.h"
18
19#include <utility>
20
21using namespace llvm;
22
23namespace {
24class FunctionArgEnumerator : public IPDBEnumSymbols {
25public:
26  typedef ConcreteSymbolEnumerator<PDBSymbolTypeFunctionArg> ArgEnumeratorType;
27
28  FunctionArgEnumerator(const IPDBSession &PDBSession,
29                        const PDBSymbolTypeFunctionSig &Sig)
30      : Session(PDBSession),
31        Enumerator(Sig.findAllChildren<PDBSymbolTypeFunctionArg>()) {}
32
33  FunctionArgEnumerator(const IPDBSession &PDBSession,
34                        std::unique_ptr<ArgEnumeratorType> ArgEnumerator)
35      : Session(PDBSession), Enumerator(std::move(ArgEnumerator)) {}
36
37  uint32_t getChildCount() const override {
38    return Enumerator->getChildCount();
39  }
40
41  std::unique_ptr<PDBSymbol> getChildAtIndex(uint32_t Index) const override {
42    auto FunctionArgSymbol = Enumerator->getChildAtIndex(Index);
43    if (!FunctionArgSymbol)
44      return nullptr;
45    return Session.getSymbolById(FunctionArgSymbol->getTypeId());
46  }
47
48  std::unique_ptr<PDBSymbol> getNext() override {
49    auto FunctionArgSymbol = Enumerator->getNext();
50    if (!FunctionArgSymbol)
51      return nullptr;
52    return Session.getSymbolById(FunctionArgSymbol->getTypeId());
53  }
54
55  void reset() override { Enumerator->reset(); }
56
57  MyType *clone() const override {
58    std::unique_ptr<ArgEnumeratorType> Clone(Enumerator->clone());
59    return new FunctionArgEnumerator(Session, std::move(Clone));
60  }
61
62private:
63  const IPDBSession &Session;
64  std::unique_ptr<ArgEnumeratorType> Enumerator;
65};
66} // namespace
67
68PDBSymbolTypeFunctionSig::PDBSymbolTypeFunctionSig(
69    const IPDBSession &PDBSession, std::unique_ptr<IPDBRawSymbol> Symbol)
70    : PDBSymbol(PDBSession, std::move(Symbol)) {}
71
72std::unique_ptr<PDBSymbol> PDBSymbolTypeFunctionSig::getReturnType() const {
73  return Session.getSymbolById(getTypeId());
74}
75
76std::unique_ptr<IPDBEnumSymbols>
77PDBSymbolTypeFunctionSig::getArguments() const {
78  return llvm::make_unique<FunctionArgEnumerator>(Session, *this);
79}
80
81std::unique_ptr<PDBSymbol> PDBSymbolTypeFunctionSig::getClassParent() const {
82  uint32_t ClassId = getClassParentId();
83  if (ClassId == 0)
84    return nullptr;
85  return Session.getSymbolById(ClassId);
86}
87
88void PDBSymbolTypeFunctionSig::dump(PDBSymDumper &Dumper) const {
89  Dumper.dump(*this);
90}
91