New task antlr. See www.antlr.org.

Submitted by:	Erik Meade <emeade@geekfarm.org>


git-svn-id: https://svn.apache.org/repos/asf/ant/core/trunk@268151 13f79535-47bb-0310-9956-ffa450edef68

WHATSNEW

@@ -4,7 +4,7 @@ Changes from Ant 1.2 to the current sources
 Other changes:
 --------------
 
-* New tasks: propertyfile, depend
+* New tasks: propertyfile, depend, antlr
 
 * Added output attribute to <java>.
 

build.xml

@@ -70,6 +70,7 @@
     <available property="junit.present" classname="junit.framework.TestCase" />
     <available property="ftp.present" classname="com.oroinc.net.ftp.FTPClient" />
     <available property="starteam.present" classname="com.starbase.util.Platform" />
+    <available property="antlr.present" classname="antlr.Tool" />
   </target>
 
   <!-- =================================================================== -->
@@ -106,6 +107,7 @@
       <exclude name="**/junit/*" unless="junit.present" />
       <exclude name="**/FTP*.java" unless="ftp.present" />
       <exclude name="**/AntStarTeam*.java" unless="starteam.present" />
+      <exclude name="**/ANTLR.java" unless="antlr.present" />
     </javac>
  
     <copy todir="${build.classes}">
@@ -324,6 +326,7 @@
         <pathelement location="${lib.dir}/${name}.jar" />
         <path refid="classpath" />
       </classpath>
+      <exclude name="org/apache/tools/ant/taskdefs/optional/ANTLRTest.java" unless="antlr.present" />
     </javac>
    </target>
 
@@ -332,6 +335,7 @@
   <!-- =================================================================== -->
   <target name="runtests" depends="compiletests" if="junit.present">
     <junit printsummary="no" haltonfailure="yes" fork="${junit.fork}">
+      <jvmarg value="-classic"/>
       <classpath>
         <pathelement location="${lib.dir}/${name}.jar" />
         <pathelement location="${build.tests}" />
@@ -350,6 +354,9 @@
           <!-- these depend on order -->
           <exclude name="org/apache/tools/ant/taskdefs/GUnzipTest.java" />
           <exclude name="org/apache/tools/ant/taskdefs/GzipTest.java" />
+
+          <!-- only run this test if ANTLR is installed -->
+          <exclude name="org/apache/tools/ant/taskdefs/optional/ANTLRTest.java" unless="antlr.present" />
         </fileset>
       </batchtest>
 
@@ -358,12 +365,14 @@
     </junit>
 
     <!-- clean up again -->
+    <delete dir="src/etc/testcases/taskdefs/optional/antlr/antlr.tmp" />
     <delete dir="src/etc/testcases/taskdefs/taskdefs.tmp" />
     <delete dir="src/etc/testcases/taskdefs.tmp" />
   </target>
 
   <target name="run.single.test" if="testcase" depends="compiletests">
     <junit printsummary="no" haltonfailure="yes" fork="${junit.fork}">
+      <jvmarg value="-classic"/>
       <classpath>
         <pathelement location="${lib.dir}/${name}.jar" />
         <pathelement location="${build.tests}" />

src/etc/testcases/taskdefs/optional/antlr/antlr.g

@@ -0,0 +1,60 @@
+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());}
+	;
+

src/etc/testcases/taskdefs/optional/antlr/antlr.xml

@@ -0,0 +1,51 @@
+<?xml version="1.0"?>
+
+<project name="antlr-test" basedir=".">
+
+  <property name="tmp.dir" value="antlr.tmp"/>
+
+
+  <target name="test1">
+    <antlr/>
+  </target>
+
+  <target name="test2">
+    <!-- delete the tmp directory, it may exists if a previous ANTLR test
+         failed.  This in turn will cause this test to fail, as it tests
+         the build exception when the outputdirectory is invalid. -->
+    <deltree dir="${tmp.dir}"/>
+    <antlr target="antlr.g" outputdirectory="${tmp.dir}"/>
+  </target>
+
+  <target name="test3">
+    <mkdir dir="${tmp.dir}"/>
+    <antlr target="antlr.g" outputdirectory="${tmp.dir}"/>
+  </target>
+
+  <target name="test4">
+    <deltree dir="${tmp.dir}"/>
+    <mkdir dir="${tmp.dir}"/>
+    <antlr target="java.g" outputdirectory="${tmp.dir}"/>
+    <antlr target="java.tree.g" outputdirectory="${tmp.dir}"/>
+  </target>
+
+  <target name="test5">
+    <antlr target="java.tree.g" outputdirectory="${tmp.dir}" fork="yes"/>
+  </target>
+
+  <target name="test6">
+    <deltree dir="${tmp.dir}"/>
+    <!-- This tmp.dir needs to be deleted by the build file which executes this test. -->
+    <mkdir dir="${tmp.dir}"/>
+    <antlr target="java.g" outputdirectory="${tmp.dir}" />
+    <antlr dir="${tmp.dir}"
+           target="java.tree.g"
+           outputdirectory="${tmp.dir}"
+           fork="yes"/>
+  </target>
+
+  <target name="test7">
+    <antlr target="antlr.xml"/>
+  </target>    
+
+</project>

src/etc/testcases/taskdefs/optional/antlr/java.tree.g

@@ -0,0 +1,314 @@
+/** Java 1.2 AST Recognizer Grammar
+ *
+ * Author:
+ *	Terence Parr	parrt@jguru.com
+ *
+ * Version tracking now done with following ID:
+ *
+ * $Id$
+ *
+ * This grammar is in the PUBLIC DOMAIN
+ *
+ * BUGS
+ */
+class JavaTreeParser extends TreeParser;
+
+options {
+	importVocab = Java;
+}
+
+compilationUnit
+	:	(packageDefinition)?
+		(importDefinition)*
+		(typeDefinition)*
+	;
+
+packageDefinition
+	:	#( PACKAGE_DEF identifier )
+	;
+
+importDefinition
+	:	#( IMPORT identifierStar )
+	;
+
+typeDefinition
+	:	#(CLASS_DEF modifiers IDENT extendsClause implementsClause objBlock )
+	|	#(INTERFACE_DEF modifiers IDENT extendsClause interfaceBlock )
+	;
+
+typeSpec
+	:	#(TYPE typeSpecArray)
+	;
+
+typeSpecArray
+	:	#( ARRAY_DECLARATOR typeSpecArray )
+	|	type
+	;
+
+type:	identifier
+	|	builtInType
+	;
+
+builtInType
+    :   "void"
+    |   "boolean"
+    |   "byte"
+    |   "char"
+    |   "short"
+    |   "int"
+    |   "float"
+    |   "long"
+    |   "double"
+    ;
+
+modifiers
+	:	#( MODIFIERS (modifier)* )
+	;
+
+modifier
+    :   "private"
+    |   "public"
+    |   "protected"
+    |   "static"
+    |   "transient"
+    |   "final"
+    |   "abstract"
+    |   "native"
+    |   "threadsafe"
+    |   "synchronized"
+    |   "const"
+    |   "volatile"
+    ;
+
+extendsClause
+	:	#(EXTENDS_CLAUSE (identifier)* )
+	;
+
+implementsClause
+	:	#(IMPLEMENTS_CLAUSE (identifier)* )
+	;
+
+
+interfaceBlock
+	:	#(	OBJBLOCK
+			(	methodDecl
+			|	variableDef
+			)*
+		)
+	;
+	
+objBlock
+	:	#(	OBJBLOCK
+			(	ctorDef
+			|	methodDef
+			|	variableDef
+			|	typeDefinition
+			|	#(STATIC_INIT slist)
+			|	#(INSTANCE_INIT slist)
+			)*
+		)
+	;
+
+ctorDef
+	:	#(CTOR_DEF modifiers methodHead slist)
+	;
+
+methodDecl
+	:	#(METHOD_DEF modifiers typeSpec methodHead)
+	;
+
+methodDef
+	:	#(METHOD_DEF modifiers typeSpec methodHead (slist)?)
+	;
+
+variableDef
+	:	#(VARIABLE_DEF modifiers typeSpec variableDeclarator varInitializer)
+	;
+
+parameterDef
+	:	#(PARAMETER_DEF modifiers typeSpec IDENT )
+	;
+
+objectinitializer
+	:	#(INSTANCE_INIT slist)
+	;
+
+variableDeclarator
+	:	IDENT
+	|	LBRACK variableDeclarator
+	;
+
+varInitializer
+	:	#(ASSIGN initializer)
+	|
+	;
+
+initializer
+	:	expression
+	|	arrayInitializer
+	;
+
+arrayInitializer
+	:	#(ARRAY_INIT (initializer)*)
+	;
+
+methodHead
+	:	IDENT #( PARAMETERS (parameterDef)* ) (throwsClause)?
+	;
+
+throwsClause
+	:	#( "throws" (identifier)* )
+	;
+
+identifier
+	:	IDENT
+	|	#( DOT identifier IDENT )
+	;
+
+identifierStar
+	:	IDENT
+	|	#( DOT identifier (STAR|IDENT) )
+	;
+
+slist
+	:	#( SLIST (stat)* )
+	;
+
+stat:	typeDefinition
+	|	variableDef
+	|	expression
+	|	#(LABELED_STAT IDENT stat)
+	|	#("if" expression stat (stat)? )
+	|	#(	"for"
+			#(FOR_INIT (variableDef | elist)?)
+			#(FOR_CONDITION (expression)?)
+			#(FOR_ITERATOR (elist)?)
+			stat
+		)
+	|	#("while" expression stat)
+	|	#("do" stat expression)
+	|	#("break" (IDENT)? )
+	|	#("continue" (IDENT)? )
+	|	#("return" (expression)? )
+	|	#("switch" expression (caseGroup)*)
+	|	#("throw" expression)
+	|	#("synchronized" expression stat)
+	|	tryBlock
+	|	slist // nested SLIST
+	|	EMPTY_STAT
+	;
+
+caseGroup
+	:	#(CASE_GROUP (#("case" expression) | "default")+ slist)
+	;
+
+tryBlock
+	:	#( "try" slist (handler)* (#("finally" slist))? )
+	;
+
+handler
+	:	#( "catch" parameterDef slist )
+	;
+
+elist
+	:	#( ELIST (expression)* )
+	;
+
+expression
+	:	#(EXPR expr)
+	;
+
+expr:	#(QUESTION expr expr expr)	// trinary operator
+	|	#(ASSIGN expr expr)			// binary operators...
+	|	#(PLUS_ASSIGN expr expr)
+	|	#(MINUS_ASSIGN expr expr)
+	|	#(STAR_ASSIGN expr expr)
+	|	#(DIV_ASSIGN expr expr)
+	|	#(MOD_ASSIGN expr expr)
+	|	#(SR_ASSIGN expr expr)
+	|	#(BSR_ASSIGN expr expr)
+	|	#(SL_ASSIGN expr expr)
+	|	#(BAND_ASSIGN expr expr)
+	|	#(BXOR_ASSIGN expr expr)
+	|	#(BOR_ASSIGN expr expr)
+	|	#(LOR expr expr)
+	|	#(LAND expr expr)
+	|	#(BOR expr expr)
+	|	#(BXOR expr expr)
+	|	#(BAND expr expr)
+	|	#(NOT_EQUAL expr expr)
+	|	#(EQUAL expr expr)
+	|	#(LT expr expr)
+	|	#(GT expr expr)
+	|	#(LE expr expr)
+	|	#(GE expr expr)
+	|	#(SL expr expr)
+	|	#(SR expr expr)
+	|	#(BSR expr expr)
+	|	#(PLUS expr expr)
+	|	#(MINUS expr expr)
+	|	#(DIV expr expr)
+	|	#(MOD expr expr)
+	|	#(STAR expr expr)
+	|	#(INC expr)
+	|	#(DEC expr)
+	|	#(POST_INC expr)
+	|	#(POST_DEC expr)
+	|	#(BNOT expr)
+	|	#(LNOT expr)
+	|	#("instanceof" expr expr)
+	|	#(UNARY_MINUS expr)
+	|	#(UNARY_PLUS expr)
+	|	primaryExpression
+	;
+
+primaryExpression
+    :   IDENT
+    |   #(	DOT
+			(	expr
+				(	IDENT
+				|	arrayIndex
+				|	"this"
+				|	"class"
+				|	#( "new" IDENT elist )
+				)
+			|	#(ARRAY_DECLARATOR type)
+			|	builtInType ("class")?
+			)
+		)
+	|	arrayIndex
+	|	#(METHOD_CALL primaryExpression elist)
+	|	#(TYPECAST typeSpec expr)
+	|   newExpression
+	|   constant
+    |   "super"
+    |   "true"
+    |   "false"
+    |   "this"
+    |   "null"
+	|	typeSpec // type name used with instanceof
+	;
+
+arrayIndex
+	:	#(INDEX_OP primaryExpression expression)
+	;
+
+constant
+    :   NUM_INT
+    |   CHAR_LITERAL
+    |   STRING_LITERAL
+    |   NUM_FLOAT
+    ;
+
+newExpression
+	:	#(	"new" type
+			(	newArrayDeclarator (arrayInitializer)?
+			|	elist
+			)
+		)
+			
+	;
+
+newArrayDeclarator
+	:	#( ARRAY_DECLARATOR (newArrayDeclarator)? (expression)? )
+	;

src/main/org/apache/tools/ant/taskdefs/defaults.properties

@@ -66,6 +66,7 @@ native2ascii=org.apache.tools.ant.taskdefs.optional.Native2Ascii
 perforce=org.apache.tools.ant.taskdefs.optional.perforce.P4sync
 propertyfile=org.apache.tools.ant.taskdefs.optional.PropertyFile
 depend=org.apache.tools.ant.taskdefs.optional.depend.Depend
+antlr=org.apache.tools.ant.taskdefs.optional.ANTLR
 
 # deprecated ant tasks (kept for back compatibility)
 javadoc2=org.apache.tools.ant.taskdefs.Javadoc

src/main/org/apache/tools/ant/taskdefs/optional/ANTLR.java

@@ -0,0 +1,173 @@
+/*
+ * The Apache Software License, Version 1.1
+ *
+ * Copyright (c) 2000 The Apache Software Foundation.  All rights
+ * reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. The end-user documentation included with the redistribution, if
+ *    any, must include the following acknowlegement:
+ *       "This product includes software developed by the
+ *        Apache Software Foundation (http://www.apache.org/)."
+ *    Alternately, this acknowlegement may appear in the software itself,
+ *    if and wherever such third-party acknowlegements normally appear.
+ *
+ * 4. The names "The Jakarta Project", "Tomcat", and "Apache Software
+ *    Foundation" must not be used to endorse or promote products derived
+ *    from this software without prior written permission. For written
+ *    permission, please contact apache@apache.org.
+ *
+ * 5. Products derived from this software may not be called "Apache"
+ *    nor may "Apache" appear in their names without prior written
+ *    permission of the Apache Group.
+ *
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED.  IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+ * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+ * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This software consists of voluntary contributions made by many
+ * individuals on behalf of the Apache Software Foundation.  For more
+ * information on the Apache Software Foundation, please see
+ * <http://www.apache.org/>.
+ */
+
+package org.apache.tools.ant.taskdefs.optional;
+
+import java.io.*;
+import org.apache.tools.ant.*;
+import org.apache.tools.ant.taskdefs.*;
+import org.apache.tools.ant.types.*;
+/**
+ * @author Erik Meade, emeade@geekfarm.org
+ */
+public class ANTLR extends Task {
+
+    private CommandlineJava commandline = new CommandlineJava();
+    private File target;
+    private File outputDirectory;
+    private boolean fork = false;
+    private File dir;
+
+    public ANTLR() {
+        commandline.setVm("java");
+        commandline.setClassname("antlr.Tool");
+    }
+
+    public void setTarget(File target) {
+        log("Setting target to: " + target.toString(), Project.MSG_VERBOSE);
+        this.target = target;
+    }
+
+    public void setOutputdirectory(File outputDirectory) {
+        log("Setting output directory to: " + outputDirectory.toString(), Project.MSG_VERBOSE);
+        this.outputDirectory = outputDirectory;
+    }
+
+    public void setFork(boolean s) {
+        this.fork = s;
+    }
+
+    /**
+     * The working directory of the process
+     */
+    public void setDir(File d) {
+        this.dir = d;
+    }
+
+
+    public void execute() throws BuildException {
+        validateAttributes();
+
+        //TODO: use ANTLR to parse the grammer file to do this.
+        if (target.lastModified() > getGeneratedFile().lastModified()) {
+            commandline.createArgument().setValue("-o");
+            commandline.createArgument().setValue(outputDirectory.toString());
+            commandline.createArgument().setValue(target.toString());
+
+            if (fork) {
+                log("Forking " + commandline.toString(), Project.MSG_VERBOSE);
+                int err = run(commandline.getCommandline());
+                if (err == 1) {
+                    throw new BuildException("ANTLR returned: "+err, location);
+                }
+            }
+            else {
+                Execute.runCommand(this, commandline.getCommandline());
+            }
+        }
+    }
+
+    private void validateAttributes() throws BuildException{
+        if (target == null || !target.isFile()) {
+            throw new BuildException("Invalid target: " + target);
+        }
+
+        // if no output directory is specified, used the target's directory
+        if (outputDirectory == null) {
+            String fileName = target.toString();
+            setOutputdirectory(new File(target.getParent()));
+        }
+        if (!outputDirectory.isDirectory()) {
+            throw new BuildException("Invalid output directory: " + outputDirectory);
+        }
+        if (fork && (dir == null || !dir.isDirectory())) {
+            throw new BuildException("Invalid working directory: " + dir);
+        }
+    }
+
+    private File getGeneratedFile() throws BuildException {
+        String generatedFileName = null;
+        try {
+            BufferedReader in = new BufferedReader(new FileReader(target));
+            String line;
+            while ((line = in.readLine()) != null) {
+                int extendsIndex = line.indexOf(" extends ");
+                if (line.startsWith("class ") &&  extendsIndex > -1) {
+                    generatedFileName = line.substring(6, extendsIndex).trim();
+                    break;
+                }
+            }
+            in.close();
+        } catch (Exception e) {
+            throw new BuildException("Unable to determine generated class");
+        }
+        if (generatedFileName == null) {
+            throw new BuildException("Unable to determine generated class");
+        }
+        return new File(outputDirectory, generatedFileName + ".java");
+    }
+
+    private int run(String[] command) throws BuildException {
+        Execute exe = new Execute(new LogStreamHandler(this, Project.MSG_INFO,
+                                                       Project.MSG_WARN), null);
+        exe.setAntRun(project);
+        exe.setWorkingDirectory(dir);
+        exe.setCommandline(command);
+        try {
+            return exe.execute();
+        } catch (IOException e) {
+            throw new BuildException(e, location);
+        }
+    }
+}

src/testcases/org/apache/tools/ant/taskdefs/optional/ANTLRTest.java

@@ -0,0 +1,110 @@
+/*
+ * The Apache Software License, Version 1.1
+ *
+ * Copyright (c) 2000 The Apache Software Foundation.  All rights
+ * reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. The end-user documentation included with the redistribution, if
+ *    any, must include the following acknowlegement:
+ *       "This product includes software developed by the
+ *        Apache Software Foundation (http://www.apache.org/)."
+ *    Alternately, this acknowlegement may appear in the software itself,
+ *    if and wherever such third-party acknowlegements normally appear.
+ *
+ * 4. The names "The Jakarta Project", "Tomcat", and "Apache Software
+ *    Foundation" must not be used to endorse or promote products derived
+ *    from this software without prior written permission. For written
+ *    permission, please contact apache@apache.org.
+ *
+ * 5. Products derived from this software may not be called "Apache"
+ *    nor may "Apache" appear in their names without prior written
+ *    permission of the Apache Group.
+ *
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED.  IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+ * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+ * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This software consists of voluntary contributions made by many
+ * individuals on behalf of the Apache Software Foundation.  For more
+ * information on the Apache Software Foundation, please see
+ * <http://www.apache.org/>.
+ */
+
+package org.apache.tools.ant.taskdefs.optional;
+
+import java.io.*;
+import org.apache.tools.ant.taskdefs.TaskdefsTest;
+/**
+ * @author Erik Meade <emeade@geekfarm.org>
+ */
+public class ANTLRTest extends TaskdefsTest {
+
+    private final static String TASKDEFS_DIR = "src/etc/testcases/taskdefs/optional/antlr/";
+
+    public ANTLRTest(String name) {
+        super(name);
+    }
+
+    public void setUp() {
+        configureProject(TASKDEFS_DIR + "antlr.xml");
+    }
+
+    public void test1() {
+        expectBuildException("test1", "required argument, target, missing");
+    }
+
+    public void test2() {
+        expectBuildException("test2", "Invalid output directory");
+    }
+
+    public void test3() {
+        executeTarget("test3");
+        File outputDirectory = new File(TASKDEFS_DIR + "antlr.tmp");
+        String[] calcFiles = outputDirectory.list(new CalcFileFilter());
+        assert(5 == calcFiles.length);
+    }
+
+    public void test4() {
+        expectBuildException("test4", "ANTLR exited with an error code of 1 ( try forking )");
+    }
+
+    public void test5() {
+        expectBuildException("test5", "Invalid working directory");
+    }
+
+    public void test6() {
+        executeTarget("test6");
+    }
+
+    public void test7() {
+        expectBuildException("test7", "Unable to determine generated class");
+    }
+}
+
+class CalcFileFilter implements FilenameFilter {
+    public boolean accept(File dir, String name) {
+        return name.startsWith("Calc");
+    }
+}