contrib/llvm/lib/DebugInfo/PDB/Native/NativeSymbolEnumerator.cpp

   1 //===- NativeSymbolEnumerator.cpp - info about enumerators ------*- 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/Native/NativeSymbolEnumerator.h"
  11
  12 #include "llvm/DebugInfo/CodeView/SymbolRecord.h"
  13 #include "llvm/DebugInfo/PDB/Native/NativeTypeBuiltin.h"
  14 #include "llvm/DebugInfo/PDB/Native/NativeTypeEnum.h"
  15
  16 using namespace llvm;
  17 using namespace llvm::codeview;
  18 using namespace llvm::pdb;
  19
  20 NativeSymbolEnumerator::NativeSymbolEnumerator(
  21     NativeSession &Session, SymIndexId Id, const NativeTypeEnum &Parent,
  22     codeview::EnumeratorRecord Record)
  23     : NativeRawSymbol(Session, PDB_SymType::Data, Id), Parent(Parent),
  24       Record(std::move(Record)) {}
  25
  26 NativeSymbolEnumerator::~NativeSymbolEnumerator() {}
  27
  28 void NativeSymbolEnumerator::dump(raw_ostream &OS, int Indent,
  29                                   PdbSymbolIdField ShowIdFields,
  30                                   PdbSymbolIdField RecurseIdFields) const {
  31   NativeRawSymbol::dump(OS, Indent, ShowIdFields, RecurseIdFields);
  32   dumpSymbolIdField(OS, "classParentId", getClassParentId(), Indent, Session,
  33                     PdbSymbolIdField::ClassParent, ShowIdFields,
  34                     RecurseIdFields);
  35   dumpSymbolIdField(OS, "lexicalParentId", getLexicalParentId(), Indent,
  36                     Session, PdbSymbolIdField::LexicalParent, ShowIdFields,
  37                     RecurseIdFields);
  38   dumpSymbolField(OS, "name", getName(), Indent);
  39   dumpSymbolIdField(OS, "typeId", getTypeId(), Indent, Session,
  40                     PdbSymbolIdField::Type, ShowIdFields, RecurseIdFields);
  41   dumpSymbolField(OS, "dataKind", getDataKind(), Indent);
  42   dumpSymbolField(OS, "locationType", getLocationType(), Indent);
  43   dumpSymbolField(OS, "constType", isConstType(), Indent);
  44   dumpSymbolField(OS, "unalignedType", isUnalignedType(), Indent);
  45   dumpSymbolField(OS, "volatileType", isVolatileType(), Indent);
  46   dumpSymbolField(OS, "value", getValue(), Indent);
  47 }
  48
  49 SymIndexId NativeSymbolEnumerator::getClassParentId() const {
  50   return Parent.getSymIndexId();
  51 }
  52
  53 SymIndexId NativeSymbolEnumerator::getLexicalParentId() const { return 0; }
  54
  55 std::string NativeSymbolEnumerator::getName() const { return Record.Name; }
  56
  57 SymIndexId NativeSymbolEnumerator::getTypeId() const {
  58   return Parent.getTypeId();
  59 }
  60
  61 PDB_DataKind NativeSymbolEnumerator::getDataKind() const {
  62   return PDB_DataKind::Constant;
  63 }
  64
  65 PDB_LocType NativeSymbolEnumerator::getLocationType() const {
  66   return PDB_LocType::Constant;
  67 }
  68
  69 bool NativeSymbolEnumerator::isConstType() const { return false; }
  70
  71 bool NativeSymbolEnumerator::isVolatileType() const { return false; }
  72
  73 bool NativeSymbolEnumerator::isUnalignedType() const { return false; }
  74
  75 Variant NativeSymbolEnumerator::getValue() const {
  76   const NativeTypeBuiltin &BT = Parent.getUnderlyingBuiltinType();
  77
  78   switch (BT.getBuiltinType()) {
  79   case PDB_BuiltinType::Int:
  80   case PDB_BuiltinType::Long:
  81   case PDB_BuiltinType::Char: {
  82     assert(Record.Value.isSignedIntN(BT.getLength() * 8));
  83     int64_t N = Record.Value.getSExtValue();
  84     switch (BT.getLength()) {
  85     case 1:
  86       return Variant{static_cast<int8_t>(N)};
  87     case 2:
  88       return Variant{static_cast<int16_t>(N)};
  89     case 4:
  90       return Variant{static_cast<int32_t>(N)};
  91     case 8:
  92       return Variant{static_cast<int64_t>(N)};
  93     }
  94     break;
  95   }
  96   case PDB_BuiltinType::UInt:
  97   case PDB_BuiltinType::ULong: {
  98     assert(Record.Value.isIntN(BT.getLength() * 8));
  99     uint64_t U = Record.Value.getZExtValue();
 100     switch (BT.getLength()) {
 101     case 1:
 102       return Variant{static_cast<uint8_t>(U)};
 103     case 2:
 104       return Variant{static_cast<uint16_t>(U)};
 105     case 4:
 106       return Variant{static_cast<uint32_t>(U)};
 107     case 8:
 108       return Variant{static_cast<uint64_t>(U)};
 109     }
 110     break;
 111   }
 112   case PDB_BuiltinType::Bool: {
 113     assert(Record.Value.isIntN(BT.getLength() * 8));
 114     uint64_t U = Record.Value.getZExtValue();
 115     return Variant{static_cast<bool>(U)};
 116   }
 117   default:
 118     assert(false && "Invalid enumeration type");
 119     break;
 120   }
 121
 122   return Variant{Record.Value.getSExtValue()};
 123 }