1//===- NativeSymbolEnumerator.cpp - info about enumerators ------*- C++ -*-===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8
9#include "llvm/DebugInfo/PDB/Native/NativeSymbolEnumerator.h"
10
11#include "llvm/DebugInfo/PDB/Native/NativeSession.h"
12#include "llvm/DebugInfo/PDB/Native/NativeTypeBuiltin.h"
13#include "llvm/DebugInfo/PDB/Native/NativeTypeEnum.h"
14
15using namespace llvm;
16using namespace llvm::codeview;
17using namespace llvm::pdb;
18
19NativeSymbolEnumerator::NativeSymbolEnumerator(
20    NativeSession &Session, SymIndexId Id, const NativeTypeEnum &Parent,
21    codeview::EnumeratorRecord Record)
22    : NativeRawSymbol(Session, PDB_SymType::Data, Id), Parent(Parent),
23      Record(std::move(Record)) {}
24
25NativeSymbolEnumerator::~NativeSymbolEnumerator() = default;
26
27void NativeSymbolEnumerator::dump(raw_ostream &OS, int Indent,
28                                  PdbSymbolIdField ShowIdFields,
29                                  PdbSymbolIdField RecurseIdFields) const {
30  NativeRawSymbol::dump(OS, Indent, ShowIdFields, RecurseIdFields);
31  dumpSymbolIdField(OS, "classParentId", getClassParentId(), Indent, Session,
32                    PdbSymbolIdField::ClassParent, ShowIdFields,
33                    RecurseIdFields);
34  dumpSymbolIdField(OS, "lexicalParentId", getLexicalParentId(), Indent,
35                    Session, PdbSymbolIdField::LexicalParent, ShowIdFields,
36                    RecurseIdFields);
37  dumpSymbolField(OS, "name", getName(), Indent);
38  dumpSymbolIdField(OS, "typeId", getTypeId(), Indent, Session,
39                    PdbSymbolIdField::Type, ShowIdFields, RecurseIdFields);
40  dumpSymbolField(OS, "dataKind", getDataKind(), Indent);
41  dumpSymbolField(OS, "locationType", getLocationType(), Indent);
42  dumpSymbolField(OS, "constType", isConstType(), Indent);
43  dumpSymbolField(OS, "unalignedType", isUnalignedType(), Indent);
44  dumpSymbolField(OS, "volatileType", isVolatileType(), Indent);
45  dumpSymbolField(OS, "value", getValue(), Indent);
46}
47
48SymIndexId NativeSymbolEnumerator::getClassParentId() const {
49  return Parent.getSymIndexId();
50}
51
52SymIndexId NativeSymbolEnumerator::getLexicalParentId() const { return 0; }
53
54std::string NativeSymbolEnumerator::getName() const {
55  return std::string(Record.Name);
56}
57
58SymIndexId NativeSymbolEnumerator::getTypeId() const {
59  return Parent.getTypeId();
60}
61
62PDB_DataKind NativeSymbolEnumerator::getDataKind() const {
63  return PDB_DataKind::Constant;
64}
65
66PDB_LocType NativeSymbolEnumerator::getLocationType() const {
67  return PDB_LocType::Constant;
68}
69
70bool NativeSymbolEnumerator::isConstType() const { return false; }
71
72bool NativeSymbolEnumerator::isVolatileType() const { return false; }
73
74bool NativeSymbolEnumerator::isUnalignedType() const { return false; }
75
76Variant NativeSymbolEnumerator::getValue() const {
77  const NativeTypeBuiltin &BT = Parent.getUnderlyingBuiltinType();
78
79  switch (BT.getBuiltinType()) {
80  case PDB_BuiltinType::Int:
81  case PDB_BuiltinType::Long:
82  case PDB_BuiltinType::Char: {
83    assert(Record.Value.isSignedIntN(BT.getLength() * 8));
84    int64_t N = Record.Value.getSExtValue();
85    switch (BT.getLength()) {
86    case 1:
87      return Variant{static_cast<int8_t>(N)};
88    case 2:
89      return Variant{static_cast<int16_t>(N)};
90    case 4:
91      return Variant{static_cast<int32_t>(N)};
92    case 8:
93      return Variant{static_cast<int64_t>(N)};
94    }
95    break;
96  }
97  case PDB_BuiltinType::UInt:
98  case PDB_BuiltinType::ULong: {
99    assert(Record.Value.isIntN(BT.getLength() * 8));
100    uint64_t U = Record.Value.getZExtValue();
101    switch (BT.getLength()) {
102    case 1:
103      return Variant{static_cast<uint8_t>(U)};
104    case 2:
105      return Variant{static_cast<uint16_t>(U)};
106    case 4:
107      return Variant{static_cast<uint32_t>(U)};
108    case 8:
109      return Variant{static_cast<uint64_t>(U)};
110    }
111    break;
112  }
113  case PDB_BuiltinType::Bool: {
114    assert(Record.Value.isIntN(BT.getLength() * 8));
115    uint64_t U = Record.Value.getZExtValue();
116    return Variant{static_cast<bool>(U)};
117  }
118  default:
119    assert(false && "Invalid enumeration type");
120    break;
121  }
122
123  return Variant{Record.Value.getSExtValue()};
124}
125