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//===- TypeDatabase.cpp --------------------------------------- *- C++ --*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#include "llvm/DebugInfo/CodeView/TypeDatabase.h"
using namespace llvm;
using namespace llvm::codeview;
TypeDatabase::TypeDatabase(uint32_t Capacity) : TypeNameStorage(Allocator) {
CVUDTNames.resize(Capacity);
TypeRecords.resize(Capacity);
ValidRecords.resize(Capacity);
}
TypeIndex TypeDatabase::appendType(StringRef Name, const CVType &Data) {
LargestTypeIndex = getAppendIndex();
if (LargestTypeIndex.toArrayIndex() >= capacity())
grow();
recordType(Name, LargestTypeIndex, Data);
return LargestTypeIndex;
}
void TypeDatabase::recordType(StringRef Name, TypeIndex Index,
const CVType &Data) {
LargestTypeIndex = empty() ? Index : std::max(Index, LargestTypeIndex);
if (LargestTypeIndex.toArrayIndex() >= capacity())
grow(Index);
uint32_t AI = Index.toArrayIndex();
assert(!contains(Index));
assert(AI < capacity());
CVUDTNames[AI] = Name;
TypeRecords[AI] = Data;
ValidRecords.set(AI);
++Count;
}
/// Saves the name in a StringSet and creates a stable StringRef.
StringRef TypeDatabase::saveTypeName(StringRef TypeName) {
return TypeNameStorage.save(TypeName);
}
StringRef TypeDatabase::getTypeName(TypeIndex Index) const {
if (Index.isNoneType() || Index.isSimple())
return TypeIndex::simpleTypeName(Index);
if (contains(Index))
return CVUDTNames[Index.toArrayIndex()];
return "<unknown UDT>";
}
const CVType &TypeDatabase::getTypeRecord(TypeIndex Index) const {
assert(contains(Index));
return TypeRecords[Index.toArrayIndex()];
}
CVType &TypeDatabase::getTypeRecord(TypeIndex Index) {
assert(contains(Index));
return TypeRecords[Index.toArrayIndex()];
}
bool TypeDatabase::contains(TypeIndex Index) const {
uint32_t AI = Index.toArrayIndex();
if (AI >= capacity())
return false;
return ValidRecords.test(AI);
}
uint32_t TypeDatabase::size() const { return Count; }
uint32_t TypeDatabase::capacity() const { return TypeRecords.size(); }
CVType TypeDatabase::getType(TypeIndex Index) { return getTypeRecord(Index); }
StringRef TypeDatabase::getTypeName(TypeIndex Index) {
return static_cast<const TypeDatabase *>(this)->getTypeName(Index);
}
bool TypeDatabase::contains(TypeIndex Index) {
return static_cast<const TypeDatabase *>(this)->contains(Index);
}
uint32_t TypeDatabase::size() {
return static_cast<const TypeDatabase *>(this)->size();
}
uint32_t TypeDatabase::capacity() {
return static_cast<const TypeDatabase *>(this)->capacity();
}
void TypeDatabase::grow() { grow(LargestTypeIndex + 1); }
void TypeDatabase::grow(TypeIndex NewIndex) {
uint32_t NewSize = NewIndex.toArrayIndex() + 1;
if (NewSize <= capacity())
return;
uint32_t NewCapacity = NewSize * 3 / 2;
TypeRecords.resize(NewCapacity);
CVUDTNames.resize(NewCapacity);
ValidRecords.resize(NewCapacity);
}
bool TypeDatabase::empty() const { return size() == 0; }
Optional<TypeIndex> TypeDatabase::largestTypeIndexLessThan(TypeIndex TI) const {
uint32_t AI = TI.toArrayIndex();
int N = ValidRecords.find_prev(AI);
if (N == -1)
return None;
return TypeIndex::fromArrayIndex(N);
}
TypeIndex TypeDatabase::getAppendIndex() const {
if (empty())
return TypeIndex::fromArrayIndex(0);
return LargestTypeIndex + 1;
}
Optional<TypeIndex> TypeDatabase::getFirst() {
int N = ValidRecords.find_first();
if (N == -1)
return None;
return TypeIndex::fromArrayIndex(N);
}
Optional<TypeIndex> TypeDatabase::getNext(TypeIndex Prev) {
int N = ValidRecords.find_next(Prev.toArrayIndex());
if (N == -1)
return None;
return TypeIndex::fromArrayIndex(N);
}
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