1 files changed, 52 insertions, 0 deletions
diff --git a/lib/antlr/src/NoViableAltException.cpp b/lib/antlr/src/NoViableAltException.cpp
new file mode 100644
index 00000000..94da2cc4
--- /dev/null
+++ b/lib/antlr/src/NoViableAltException.cpp
@@ -0,0 +1,52 @@
+/* ANTLR Translator Generator
+ * Project led by Terence Parr at http://www.jGuru.com
+ * Software rights: http://www.antlr.org/license.html
+ *
+ * $Id$
+ */
+
+#include "antlr/NoViableAltException.hpp"
+#include "antlr/String.hpp"
+
+#ifdef ANTLR_CXX_SUPPORTS_NAMESPACE
+namespace antlr {
+#endif
+
+ANTLR_USING_NAMESPACE(std)
+
+NoViableAltException::NoViableAltException(RefAST t)
+  : RecognitionException("NoViableAlt","<AST>",-1,-1),
+    token(0), node(t)
+{
+}
+
+NoViableAltException::NoViableAltException(
+	RefToken t,
+	const ANTLR_USE_NAMESPACE(std)string& fileName_
+) : RecognitionException("NoViableAlt",fileName_,t->getLine(),t->getColumn()),
+    token(t), node(nullASTptr)
+{
+}
+
+ANTLR_USE_NAMESPACE(std)string NoViableAltException::getMessage() const
+{
+	if (token)
+	{
+		if( token->getType() == Token::EOF_TYPE )
+			return string("unexpected end of file");
+		else if( token->getType() == Token::NULL_TREE_LOOKAHEAD )
+			return string("unexpected end of tree");
+		else
+			return string("unexpected token: ")+token->getText();
+	}
+
+	// must a tree parser error if token==null
+	if (!node)
+		return "unexpected end of subtree";
+
+	return string("unexpected AST node: ")+node->toString();
+}
+
+#ifdef ANTLR_CXX_SUPPORTS_NAMESPACE
+}
+#endif