Imported Upstream version 5.18.0.246

Former-commit-id: 0c7ce5b1a7851e13f22acfd379b7f9fb304e4833

external/llvm/lib/DebugInfo/PDB/DIA/DIAEnumSymbols.cpp

@@ -0,0 +1,55 @@
+//==- DIAEnumSymbols.cpp - DIA Symbol Enumerator impl ------------*- 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/PDB/DIA/DIAEnumSymbols.h"
+#include "llvm/DebugInfo/PDB/DIA/DIARawSymbol.h"
+#include "llvm/DebugInfo/PDB/DIA/DIASession.h"
+#include "llvm/DebugInfo/PDB/PDBSymbol.h"
+
+using namespace llvm;
+using namespace llvm::pdb;
+
+DIAEnumSymbols::DIAEnumSymbols(const DIASession &PDBSession,
+                               CComPtr<IDiaEnumSymbols> DiaEnumerator)
+    : Session(PDBSession), Enumerator(DiaEnumerator) {}
+
+uint32_t DIAEnumSymbols::getChildCount() const {
+  LONG Count = 0;
+  return (S_OK == Enumerator->get_Count(&Count)) ? Count : 0;
+}
+
+std::unique_ptr<PDBSymbol>
+DIAEnumSymbols::getChildAtIndex(uint32_t Index) const {
+  CComPtr<IDiaSymbol> Item;
+  if (S_OK != Enumerator->Item(Index, &Item))
+    return nullptr;
+
+  std::unique_ptr<DIARawSymbol> RawSymbol(new DIARawSymbol(Session, Item));
+  return std::unique_ptr<PDBSymbol>(PDBSymbol::create(Session, std::move(RawSymbol)));
+}
+
+std::unique_ptr<PDBSymbol> DIAEnumSymbols::getNext() {
+  CComPtr<IDiaSymbol> Item;
+  ULONG NumFetched = 0;
+  if (S_OK != Enumerator->Next(1, &Item, &NumFetched))
+    return nullptr;
+
+  std::unique_ptr<DIARawSymbol> RawSymbol(new DIARawSymbol(Session, Item));
+  return std::unique_ptr<PDBSymbol>(
+      PDBSymbol::create(Session, std::move(RawSymbol)));
+}
+
+void DIAEnumSymbols::reset() { Enumerator->Reset(); }
+
+DIAEnumSymbols *DIAEnumSymbols::clone() const {
+  CComPtr<IDiaEnumSymbols> EnumeratorClone;
+  if (S_OK != Enumerator->Clone(&EnumeratorClone))
+    return nullptr;
+  return new DIAEnumSymbols(Session, EnumeratorClone);
+}