1 files changed, 105 insertions, 0 deletions
diff --git a/lib/AST/ASTTypeTraits.cpp b/lib/AST/ASTTypeTraits.cpp
new file mode 100644
index 0000000..ae47ea9
--- /dev/null
+++ b/lib/AST/ASTTypeTraits.cpp
@@ -0,0 +1,105 @@
+//===--- ASTTypeTraits.cpp --------------------------------------*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+//  Provides a dynamic type identifier and a dynamically typed node container
+//  that can be used to store an AST base node at runtime in the same storage in
+//  a type safe way.
+//
+//===----------------------------------------------------------------------===//
+
+#include "clang/AST/ASTTypeTraits.h"
+#include "clang/AST/ASTContext.h"
+#include "clang/AST/DeclCXX.h"
+
+namespace clang {
+namespace ast_type_traits {
+
+const ASTNodeKind::KindInfo ASTNodeKind::AllKindInfo[] = {
+  { NKI_None, "<None>" },
+  { NKI_None, "CXXCtorInitializer" },
+  { NKI_None, "TemplateArgument" },
+  { NKI_None, "NestedNameSpecifier" },
+  { NKI_None, "NestedNameSpecifierLoc" },
+  { NKI_None, "QualType" },
+  { NKI_None, "TypeLoc" },
+  { NKI_None, "Decl" },
+#define DECL(DERIVED, BASE) { NKI_##BASE, #DERIVED "Decl" },
+#include "clang/AST/DeclNodes.inc"
+  { NKI_None, "Stmt" },
+#define STMT(DERIVED, BASE) { NKI_##BASE, #DERIVED },
+#include "clang/AST/StmtNodes.inc"
+  { NKI_None, "Type" },
+#define TYPE(DERIVED, BASE) { NKI_##BASE, #DERIVED "Type" },
+#include "clang/AST/TypeNodes.def"
+};
+
+bool ASTNodeKind::isBaseOf(ASTNodeKind Other) const {
+  return isBaseOf(KindId, Other.KindId);
+}
+
+bool ASTNodeKind::isSame(ASTNodeKind Other) const {
+  return KindId != NKI_None && KindId == Other.KindId;
+}
+
+bool ASTNodeKind::isBaseOf(NodeKindId Base, NodeKindId Derived) {
+  if (Base == NKI_None || Derived == NKI_None) return false;
+  while (Derived != Base && Derived != NKI_None)
+    Derived = AllKindInfo[Derived].ParentId;
+  return Derived == Base;
+}
+
+StringRef ASTNodeKind::asStringRef() const { return AllKindInfo[KindId].Name; }
+
+void DynTypedNode::print(llvm::raw_ostream &OS,
+                         const PrintingPolicy &PP) const {
+  if (const TemplateArgument *TA = get<TemplateArgument>())
+    TA->print(PP, OS);
+  else if (const NestedNameSpecifier *NNS = get<NestedNameSpecifier>())
+    NNS->print(OS, PP);
+  else if (const NestedNameSpecifierLoc *NNSL = get<NestedNameSpecifierLoc>())
+    NNSL->getNestedNameSpecifier()->print(OS, PP);
+  else if (const QualType *QT = get<QualType>())
+    QT->print(OS, PP);
+  else if (const TypeLoc *TL = get<TypeLoc>())
+    TL->getType().print(OS, PP);
+  else if (const Decl *D = get<Decl>())
+    D->print(OS, PP);
+  else if (const Stmt *S = get<Stmt>())
+    S->printPretty(OS, 0, PP);
+  else if (const Type *T = get<Type>())
+    QualType(T, 0).print(OS, PP);
+  else
+    OS << "Unable to print values of type " << NodeKind.asStringRef() << "\n";
+}
+
+void DynTypedNode::dump(llvm::raw_ostream &OS, SourceManager &SM) const {
+  if (const Decl *D = get<Decl>())
+    D->dump(OS);
+  else if (const Stmt *S = get<Stmt>())
+    S->dump(OS, SM);
+  else
+    OS << "Unable to dump values of type " << NodeKind.asStringRef() << "\n";
+}
+
+SourceRange DynTypedNode::getSourceRange() const {
+  if (const CXXCtorInitializer *CCI = get<CXXCtorInitializer>())
+    return CCI->getSourceRange();
+  if (const NestedNameSpecifierLoc *NNSL = get<NestedNameSpecifierLoc>())
+    return NNSL->getSourceRange();
+  if (const TypeLoc *TL = get<TypeLoc>())
+    return TL->getSourceRange();
+  if (const Decl *D = get<Decl>())
+    return D->getSourceRange();
+  if (const Stmt *S = get<Stmt>())
+    return S->getSourceRange();
+  return SourceRange();
+}
+
+} // end namespace ast_type_traits
+} // end namespace clang