1 files changed, 41 insertions, 0 deletions
diff --git a/lib/antlr/src/ASTRefCount.cpp b/lib/antlr/src/ASTRefCount.cpp
new file mode 100644
index 00000000..0ca54df0
--- /dev/null
+++ b/lib/antlr/src/ASTRefCount.cpp
@@ -0,0 +1,41 @@
+/* ANTLR Translator Generator
+ * Project led by Terence Parr at http://www.jGuru.com
+ * Software rights: http://www.antlr.org/license.html
+ *
+ * $Id$
+ */
+#include "antlr/ASTRefCount.hpp"
+#include "antlr/AST.hpp"
+
+#ifdef ANTLR_CXX_SUPPORTS_NAMESPACE
+namespace antlr {
+#endif
+
+ASTRef::ASTRef(AST* p)
+: ptr(p), count(1)
+{
+	if (p && !p->ref)
+		p->ref = this;
+}
+
+ASTRef::~ASTRef()
+{
+	delete ptr;
+}
+
+ASTRef* ASTRef::getRef(const AST* p)
+{
+	if (p) {
+		AST* pp = const_cast<AST*>(p);
+		if (pp->ref)
+			return pp->ref->increment();
+		else
+			return new ASTRef(pp);
+	} else
+		return 0;
+}
+
+#ifdef ANTLR_CXX_SUPPORTS_NAMESPACE
+}
+#endif
+