JavaCC task.

Submitted by:	Thomas Haas <thomas.haas@softwired-inc.com>


git-svn-id: https://svn.apache.org/repos/asf/ant/core/trunk@267800 13f79535-47bb-0310-9956-ffa450edef68

src/main/org/apache/tools/ant/taskdefs/optional/javacc/JavaCC.java

@@ -0,0 +1,182 @@
+/*
+ * 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.javacc;
+
+import org.apache.tools.ant.*;
+import org.apache.tools.ant.taskdefs.*;
+import org.apache.tools.ant.types.Commandline;
+import org.apache.tools.ant.types.CommandlineJava;
+
+import java.io.File;
+import java.io.IOException;
+
+/*
+ *
+ * @author thomas.haas@softwired-inc.com
+ */
+public class JavaCC extends Task {
+
+    private Path userclasspath = new Path();
+    private File metahome = null;
+    private File metaworkingdir = null;
+    private File target = null;
+    private boolean cleanupHack = false;
+    private CommandlineJava cmdl = new CommandlineJava();
+
+
+    public void setMetamatahome(File metamatahome) {
+        this.metahome = metamatahome;
+    }
+
+    public void setWorkingdir(File workingdir) {
+        this.metaworkingdir = workingdir;
+    }
+
+    public void setTarget(File target) {
+        this.target = target;
+    }
+
+    public Path createUserclasspath() {
+        return userclasspath;
+    }
+
+
+    public void setCleanupHack(boolean value) {
+        cleanupHack = value;
+    }
+
+    public JavaCC() {
+        cmdl.setVm("java");
+        cmdl.setClassname("com.metamata.jj.MParse");
+    }
+
+
+    public void execute() throws BuildException {
+
+        if (target == null || !target.isFile()) {
+            throw new BuildException("Invalid target: " + target);
+        }
+        final File javaFile = new File(target.toString().substring(0,
+                                                                   target.toString().indexOf(".jj")) + ".java");
+        if (javaFile.exists() && target.lastModified() < javaFile.lastModified()) {
+            project.log("Target is already build - skipping (" + target + ")");
+            return;
+        }
+        cmdl.createArgument().setValue(target.getAbsolutePath());
+
+        if (metahome == null || !metahome.isDirectory()) {
+            throw new BuildException("Metamatahome not valid.");
+        }
+        if (metaworkingdir == null || !metaworkingdir.isDirectory()) {
+            throw new BuildException("Workingdir not set.");
+        }
+        if (userclasspath == null) {
+            throw new BuildException("Userclasspath not set.");
+        }
+
+        final Path classpath = cmdl.createClasspath();
+        classpath.createPathElement().setLocation(metahome.getAbsolutePath() + "/lib/metamatadebug.jar");
+        classpath.createPathElement().setLocation(metahome.getAbsolutePath() + "/lib/metamata.jar");
+        classpath.createPathElement().setLocation(metahome.getAbsolutePath() + "/lib/JavaCC.zip");
+
+        final Commandline.Argument arg = cmdl.createVmArgument();
+        arg.setValue("-mx140M");
+        arg.setValue("-Dmwp=" + metaworkingdir.getAbsolutePath());
+        arg.setValue("-Dmetamata.home=" + metahome.getAbsolutePath());
+        arg.setValue("-Dmetamata.java=java");
+        arg.setValue("-Dmetamata.java.options=-mx140M");
+        arg.setValue("-Dmetamata.java.options.classpath=-classpath");
+        arg.setValue("-Dmetamata.java.compiler=javac");
+        arg.setValue("-Dmetamata.java.compiler.options.0=-J-mx64M");
+        arg.setValue("-Dmetamata.java.compiler.options.classpath=-classpath");
+        arg.setValue("-Dmetamata.language=en");
+        arg.setValue("-Dmetamata.country=US");
+        arg.setValue("-Dmetamata.classpath=" + userclasspath);
+
+        final Execute process = new Execute(new LogStreamHandler(this,
+                                                                 Project.MSG_INFO,
+                                                                 Project.MSG_INFO), null);
+        log(cmdl.toString(), Project.MSG_VERBOSE);
+        process.setCommandline(cmdl.getCommandline());
+
+        try {
+            try {
+                if (process.execute() != 0) {
+                    throw new BuildException("JavaCC failed.");
+                }
+            } finally {
+                if (cleanupHack) {
+                    final File oo393 = new File(javaFile.getParentFile(),
+                                                "OO393.class");
+                    if (oo393.exists()) {
+                        project.log("Removing stale file: " + oo393.getName());
+                        oo393.delete();
+                    }
+                    final File sunjj = new File(javaFile.getParentFile(),
+                                                "__jj" + javaFile.getName().substring(0,
+                                                                                      javaFile.getName().indexOf(".java")) + ".sunjj");
+                    if (sunjj.exists()) {
+                        project.log("Removing stale file: " + sunjj.getName());
+                        sunjj.delete();
+                    }
+                }
+            }
+        }
+        catch (IOException e) {
+            throw new BuildException("Failed to launch JavaCC: " + e);
+        }
+    }
+
+}