Add new 'CXXConditionDeclExpr' expression node used for a 'condition' declaration, e.g: "if (int x=0) {...}".

It is a subclass of DeclRefExpr and the main difference is that CXXConditionDeclExpr owns the declaration that it references.

llvm-svn: 56033

2 files changed, 19 insertions, 0 deletions

diff --git a/clang/lib/AST/ExprCXX.cpp b/clang/lib/AST/ExprCXX.cpp
index cf85ae2d75b..2ad65451dee 100644
--- a/clang/lib/AST/ExprCXX.cpp
+++ b/clang/lib/AST/ExprCXX.cpp
@@ -14,6 +14,12 @@
 #include "clang/AST/ExprCXX.h"
 using namespace clang;
 
+void CXXConditionDeclExpr::Destroy(ASTContext& C) {

+  getVarDecl()->Destroy(C);

+  delete this;

+}

+
+
 //===----------------------------------------------------------------------===//
 //  Child Iterators for iterating over subexpressions/substatements
 //===----------------------------------------------------------------------===//
@@ -53,3 +59,11 @@ Stmt::child_iterator CXXZeroInitValueExpr::child_begin() {
 Stmt::child_iterator CXXZeroInitValueExpr::child_end() {
   return child_iterator();
 }
+
+// CXXConditionDeclExpr
+Stmt::child_iterator CXXConditionDeclExpr::child_begin() {
+  return getVarDecl();
+}
+Stmt::child_iterator CXXConditionDeclExpr::child_end() {
+  return child_iterator();
+}
diff --git a/clang/lib/AST/StmtPrinter.cpp b/clang/lib/AST/StmtPrinter.cpp
index f5806ea5dda..3c3e207a02d 100644
--- a/clang/lib/AST/StmtPrinter.cpp
+++ b/clang/lib/AST/StmtPrinter.cpp
@@ -829,6 +829,11 @@ void StmtPrinter::VisitCXXZeroInitValueExpr(CXXZeroInitValueExpr *Node) {
   OS << Node->getType().getAsString() << "()";
 }
 
+void
+StmtPrinter::VisitCXXConditionDeclExpr(CXXConditionDeclExpr *E) {
+  PrintRawDecl(E->getVarDecl());
+}
+
 // Obj-C 
 
 void StmtPrinter::VisitObjCStringLiteral(ObjCStringLiteral *Node) {