Changes in src/AST/Node.hpp [8abee136:76ed81f]

File:

• src/AST/Node.hpp (modified) (3 diffs)

src/AST/Node.hpp

@@ -94 +94 @@
 std::ostream& operator<< ( std::ostream& out, const Node * node );
 
+/// Call a visitor on a possibly-null node
+template<typename node_t>
+auto maybe_accept( const node_t * n, Visitor & v ) -> decltype( n->accept(v) ) {
+        return n ? n->accept( v ) : nullptr;
+}
+
 /// Base class for the smart pointer types
 /// should never really be used.
@@ -115 +121 @@
         template<typename o_node_t>
         ptr_base & operator=( const o_node_t * node ) {
-                assign( node ? strict_dynamic_cast<const node_t *>(node) : nullptr );
+                assign(strict_dynamic_cast<const node_t *>(node));
                 return *this;
         }
@@ -140 +146 @@
         template<typename o_node_t>
         const o_node_t * as() const { return dynamic_cast<const o_node_t *>(node); }
+
+        /// Returns a mutable version of the pointer in this node.
+        node_t * get_and_mutate();
 
         /// Sets this pointer to a mutated version of a pointer (possibly) owned elsehere.