[DebugInfo/PDB] Adding getUndecoratedNameEx and IPDB interfaces for IDiaEnumTables and IDiaTable.

Initial changes to support debugging PE/COFF files with LLDB on Windows through DIA SDK.
There is another set of changes required on the LLDB side before this does anything.

Differential Revision: https://reviews.llvm.org/D39517

llvm-svn: 318403

1 files changed, 53 insertions, 0 deletions

diff --git a/llvm/lib/DebugInfo/PDB/DIA/DIAEnumTables.cpp b/llvm/lib/DebugInfo/PDB/DIA/DIAEnumTables.cpp
new file mode 100644
index 00000000000..511b55585eb
--- /dev/null
+++ b/llvm/lib/DebugInfo/PDB/DIA/DIAEnumTables.cpp
@@ -0,0 +1,53 @@
+//===- DIAEnumTables.cpp - DIA Table 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/DIAEnumTables.h"
+#include "llvm/DebugInfo/PDB/DIA/DIATable.h"
+
+using namespace llvm;
+using namespace llvm::pdb;
+
+DIAEnumTables::DIAEnumTables(
+  CComPtr<IDiaEnumTables> DiaEnumerator)
+  : Enumerator(DiaEnumerator) {}
+
+uint32_t DIAEnumTables::getChildCount() const {
+  LONG Count = 0;
+  return (S_OK == Enumerator->get_Count(&Count)) ? Count : 0;
+}
+
+std::unique_ptr<IPDBTable>
+DIAEnumTables::getChildAtIndex(uint32_t Index) const {
+  CComPtr<IDiaTable> Item;
+  VARIANT Var;
+  Var.vt = VT_UINT;
+  Var.uintVal = Index;
+  if (S_OK != Enumerator->Item(Var, &Item))
+    return nullptr;
+
+  return std::unique_ptr<IPDBTable>(new DIATable(Item));
+}
+
+std::unique_ptr<IPDBTable> DIAEnumTables::getNext() {
+  CComPtr<IDiaTable> Item;
+  ULONG CeltFetched = 0;
+  if (S_OK != Enumerator->Next(1, &Item, &CeltFetched))
+    return nullptr;
+
+  return std::unique_ptr<IPDBTable>(new DIATable(Item));
+}
+
+void DIAEnumTables::reset() { Enumerator->Reset(); }
+
+DIAEnumTables *DIAEnumTables::clone() const {
+  CComPtr<IDiaEnumTables> EnumeratorClone;
+  if (S_OK != Enumerator->Clone(&EnumeratorClone))
+    return nullptr;
+  return new DIAEnumTables(EnumeratorClone);
+}