llvm/lib/DebugInfo/CodeView/TypeTableCollection.cpp

   1 //===- TypeTableCollection.cpp -------------------------------- *- 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/CodeView/TypeTableCollection.h"
  10
  11 #include "llvm/DebugInfo/CodeView/CodeView.h"
  12 #include "llvm/DebugInfo/CodeView/RecordName.h"
  13 #include "llvm/DebugInfo/CodeView/TypeIndex.h"
  14 #include "llvm/Support/ErrorHandling.h"
  15
  16 using namespace llvm;
  17 using namespace llvm::codeview;
  18
  19 TypeTableCollection::TypeTableCollection(ArrayRef<ArrayRef<uint8_t>> Records)
  20     : NameStorage(Allocator), Records(Records) {
  21   Names.resize(Records.size());
  22 }
  23
  24 std::optional<TypeIndex> TypeTableCollection::getFirst() {
  25   if (empty())
  26     return std::nullopt;
  27   return TypeIndex::fromArrayIndex(0);
  28 }
  29
  30 std::optional<TypeIndex> TypeTableCollection::getNext(TypeIndex Prev) {
  31   assert(contains(Prev));
  32   ++Prev;
  33   if (Prev.toArrayIndex() == size())
  34     return std::nullopt;
  35   return Prev;
  36 }
  37
  38 CVType TypeTableCollection::getType(TypeIndex Index) {
  39   assert(Index.toArrayIndex() < Records.size());
  40   return CVType(Records[Index.toArrayIndex()]);
  41 }
  42
  43 StringRef TypeTableCollection::getTypeName(TypeIndex Index) {
  44   if (Index.isNoneType() || Index.isSimple())
  45     return TypeIndex::simpleTypeName(Index);
  46
  47   uint32_t I = Index.toArrayIndex();
  48   if (Names[I].data() == nullptr) {
  49     StringRef Result = NameStorage.save(computeTypeName(*this, Index));
  50     Names[I] = Result;
  51   }
  52   return Names[I];
  53 }
  54
  55 bool TypeTableCollection::contains(TypeIndex Index) {
  56   return Index.toArrayIndex() <= size();
  57 }
  58
  59 uint32_t TypeTableCollection::size() { return Records.size(); }
  60
  61 uint32_t TypeTableCollection::capacity() { return Records.size(); }
  62
  63 bool TypeTableCollection::replaceType(TypeIndex &Index, CVType Data,
  64                                       bool Stabilize) {
  65   llvm_unreachable("Method cannot be called");
  66 }