Security-55471.tar.gz

[apple/security.git] / libsecurity_codesigning / antlr2 / src / ASTRefCount.cpp

diff --git a/libsecurity_codesigning/antlr2/src/ASTRefCount.cpp b/libsecurity_codesigning/antlr2/src/ASTRefCount.cpp
new file mode 100644 (file)
index 0000000..340005b
--- /dev/null
+++ b/libsecurity_codesigning/antlr2/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: //depot/code/org.antlr/release/antlr-2.7.7/lib/cpp/src/ASTRefCount.cpp#2 $
+ */
+#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
+