add actions for deleting expr/stmt nodes.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@41635 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/Sema/Sema.cpp b/Sema/Sema.cpp
index f783302..1a01270 100644
--- a/Sema/Sema.cpp
+++ b/Sema/Sema.cpp
@@ -38,6 +38,13 @@
KnownFunctionIDs[ id_vprintf ] = &IT.get("vprintf");
}
+void Sema::DeleteExpr(ExprTy *E) {
+ delete static_cast<Expr*>(E);
+}
+void Sema::DeleteStmt(StmtTy *S) {
+ delete static_cast<Stmt*>(S);
+}
+
//===----------------------------------------------------------------------===//
// Helper functions.
//===----------------------------------------------------------------------===//
diff --git a/Sema/Sema.h b/Sema/Sema.h
index fbf4f53..046305e 100644
--- a/Sema/Sema.h
+++ b/Sema/Sema.h
@@ -120,6 +120,9 @@
const std::string &Msg1, const std::string &Msg2,
SourceRange R1, SourceRange R2);
+ virtual void DeleteExpr(ExprTy *E);
+ virtual void DeleteStmt(StmtTy *S);
+
//===--------------------------------------------------------------------===//
// Type Analysis / Processing: SemaType.cpp.
//
diff --git a/include/clang/Parse/Action.h b/include/clang/Parse/Action.h
index cb1acf5..bc23b81 100644
--- a/include/clang/Parse/Action.h
+++ b/include/clang/Parse/Action.h
@@ -78,6 +78,12 @@
typedef ActionResult<1> StmtResult;
typedef ActionResult<2> TypeResult;
+ /// Deletion callbacks - Since the parser doesn't know the concrete types of
+ /// the AST nodes being generated, it must do callbacks to delete objects when
+ /// recovering from errors.
+ virtual void DeleteExpr(ExprTy *E) {}
+ virtual void DeleteStmt(StmtTy *E) {}
+
//===--------------------------------------------------------------------===//
// Declaration Tracking Callbacks.
//===--------------------------------------------------------------------===//