Changeset c8dfcd3 for src/Common

Timestamp:

Aug 30, 2016, 5:15:34 PM (8 years ago)

Author:

Rob Schluntz <rschlunt@…>

Branches:

ADT, aaron-thesis, arm-eh, ast-experimental, cleanup-dtors, ctor, deferred_resn, demangler, enum, forall-pointer-decay, jacob/cs343-translation, jenkins-sandbox, master, new-ast, new-ast-unique-expr, new-env, no_list, persistent-indexer, pthread-emulation, qualifiedEnum, resolv-new, with_gc

Children:

fba44f8

Parents:

fa463f1

Message:

insert implicit ctor/dtors if field is unhandled in a struct ctor/dtor

File:

• src/Common/utility.h (modified) (1 diff)

src/Common/utility.h

@@ -246 +246 @@
 }
 
+// RAII object to regulate "save and restore" behaviour, e.g.
+// void Foo::bar() {
+//   ValueGuard<int> guard(var); // var is a member of type Foo
+//   var = ...;
+// } // var's original value is restored
+template< typename T >
+struct ValueGuard {
+        T old;
+        T& ref;
+
+        ValueGuard(T& inRef) : old(inRef), ref(inRef) {}
+        ~ValueGuard() { ref = old; }
+};
+
 #endif // _UTILITY_H