1 files changed, 76 insertions, 0 deletions
diff --git a/framework/src/ant/apache-ant-1.9.6/src/etc/testcases/taskdefs/optional/antlr/antlr.g b/framework/src/ant/apache-ant-1.9.6/src/etc/testcases/taskdefs/optional/antlr/antlr.g
new file mode 100644
index 00000000..9f724936
--- /dev/null
+++ b/framework/src/ant/apache-ant-1.9.6/src/etc/testcases/taskdefs/optional/antlr/antlr.g
@@ -0,0 +1,76 @@
+/*
+Licensed to the Apache Software Foundation (ASF) under one or more
+contributor license agreements.  See the NOTICE file distributed with
+this work for additional information regarding copyright ownership.
+The ASF licenses this file to You under the Apache License, Version 2.0
+(the "License"); you may not use this file except in compliance with
+the License.  You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+class CalcParser extends Parser;
+options {
+	buildAST = true;	// uses CommonAST by default
+}
+
+expr
+	:	mexpr (PLUS^ mexpr)* SEMI!
+	;
+
+mexpr
+	:	atom (STAR^ atom)*
+	;
+
+atom:	INT
+	;
+
+class CalcLexer extends Lexer;
+
+WS	:	(' '
+	|	'\t'
+	|	'\n'
+	|	'\r')
+		{ _ttype = Token.SKIP; }
+	;
+
+LPAREN:	'('
+	;
+
+RPAREN:	')'
+	;
+
+STAR:	'*'
+	;
+
+PLUS:	'+'
+	;
+
+SEMI:	';'
+	;
+
+protected
+DIGIT
+	:	'0'..'9'
+	;
+
+INT	:	(DIGIT)+
+	;
+
+class CalcTreeWalker extends TreeParser;
+
+expr returns [float r]
+{
+	float a,b;
+	r=0;
+}
+	:	#(PLUS a=expr b=expr)	{r = a+b;}
+	|	#(STAR a=expr b=expr)	{r = a*b;}
+	|	i:INT			{r = (float)Integer.parseInt(i.getText());}
+	;
+