/*
* 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.
*
*/
package org.apache.tools.ant.types;
import org.apache.tools.ant.BuildException;
import org.apache.tools.ant.Project;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import java.util.ListIterator;
/**
* The assertion datatype. This type describes
* assertion settings for the <java> task and others.
* One can set the system assertions, and enable/disable those in
* packages and classes.
* Assertions can only be enabled or disabled when forking Java.
*
* Example: set system assertions and all org.apache packages except
* for ant, and the class org.apache.tools.ant.Main.
* <pre>
* <assertions enableSystemAssertions="true" >
* <enable package="org.apache" />
* <disable package="org.apache.ant" />
* <enable class="org.apache.tools.ant.Main"/>
* </assertions>
*</pre>
* Disable system assertions; enable those in the anonymous package
* <pre>
* <assertions enableSystemAssertions="false" >
* <enable package="..." />
* </assertions>
* </pre>
* enable assertions in a class called Test
* <pre>
* <assertions >
* <enable class="Test" />
* </assertions>
* </pre>
* This type is a datatype, so you can declare assertions and use them later
*
* <pre>
* <assertions id="project.assertions" >
* <enable project="org.apache.test" />
* </assertions>
*
* <assertions refid="project.assertions" />
*
* </pre>
* @since Ant 1.6
*/
public class Assertions extends DataType implements Cloneable {
/**
* enable/disable sys assertions; null means undefined
*/
private Boolean enableSystemAssertions;
/**
* list of type BaseAssertion
*/
private ArrayList assertionList = new ArrayList();
/**
* enable assertions
* @param assertion an enable assertion nested element
*/
public void addEnable(EnabledAssertion assertion) {
checkChildrenAllowed();
assertionList.add(assertion);
}
/**
* disable assertions
* @param assertion a disable assertion nested element
*/
public void addDisable(DisabledAssertion assertion) {
checkChildrenAllowed();
assertionList.add(assertion);
}
/**
* enable or disable system assertions.
* Default is not set (neither -enablesystemassersions or -disablesytemassertions
* are used on the command line).
* @param enableSystemAssertions if true enable system assertions
*/
public void setEnableSystemAssertions(Boolean enableSystemAssertions) {
checkAttributesAllowed();
this.enableSystemAssertions = enableSystemAssertions;
}
/**
* Set the value of the refid attribute.
*
* <p>Subclasses may need to check whether any other attributes
* have been set as well or child elements have been created and
* thus override this method. if they do the must call
* <code>super.setRefid</code>.</p>
* @param ref the reference to use
*/
public void setRefid(Reference ref) {
if (assertionList.size() > 0 || enableSystemAssertions != null) {
throw tooManyAttributes();
}
super.setRefid(ref);
}
/**
* get whatever we are referencing to. This could be ourself.
* @return the object that contains the assertion info
*/
private Assertions getFinalReference() {
if (getRefid() == null) {
return this;
} else {
Object o = getRefid().getReferencedObject(getProject());
if (!(o instanceof Assertions)) {
throw new BuildException("reference is of wrong type");
}
return (Assertions) o;
}
}
/**
* how many assertions are made...will resolve references before returning
* @return total # of commands to make
*/
public int size() {
Assertions clause = getFinalReference();
return clause.getFinalSize();
}
/**
* what is the final size of this object
* @return
*/
private int getFinalSize() {
return assertionList.size() + (enableSystemAssertions != null ? 1 : 0);
}
/**
* add the assertions to a list in a format suitable
* for adding to a command line
* @param commandList the command line to format
*/
public void applyAssertions(List commandList) {
getProject().log("Applying assertions", Project.MSG_DEBUG);
Assertions clause = getFinalReference();
//do the system assertions
if (Boolean.TRUE.equals(clause.enableSystemAssertions)) {
getProject().log("Enabling system assertions", Project.MSG_DEBUG);
commandList.add("-enablesystemassertions");
} else if (Boolean.FALSE.equals(clause.enableSystemAssertions)) {
getProject().log("disabling system assertions", Project.MSG_DEBUG);
commandList.add("-disablesystemassertions");
}
//now any inner assertions
Iterator it = clause.assertionList.iterator();
while (it.hasNext()) {
BaseAssertion assertion = (BaseAssertion) it.next();
String arg = assertion.toCommand();
getProject().log("adding assertion " + arg, Project.MSG_DEBUG);
commandList.add(arg);
}
}
/**
* apply all the assertions to the command.
* @param command the command line to format
*/
public void applyAssertions(CommandlineJava command) {
Assertions clause = getFinalReference();
//do the system assertions
if (Boolean.TRUE.equals(clause.enableSystemAssertions)) {
addVmArgument(command, "-enablesystemassertions");
} else if (Boolean.FALSE.equals(clause.enableSystemAssertions)) {
addVmArgument(command, "-disablesystemassertions");
}
//now any inner assertions
Iterator it = clause.assertionList.iterator();
while (it.hasNext()) {
BaseAssertion assertion = (BaseAssertion) it.next();
String arg = assertion.toCommand();
addVmArgument(command, arg);
}
}
/**
* add the assertions to a list in a format suitable
* for adding to a command line
* @param commandIterator list of commands
*/
public void applyAssertions(final ListIterator commandIterator) {
getProject().log("Applying assertions", Project.MSG_DEBUG);
Assertions clause = getFinalReference();
//do the system assertions
if (Boolean.TRUE.equals(clause.enableSystemAssertions)) {
getProject().log("Enabling system assertions", Project.MSG_DEBUG);
commandIterator.add("-enablesystemassertions");
} else if (Boolean.FALSE.equals(clause.enableSystemAssertions)) {
getProject().log("disabling system assertions", Project.MSG_DEBUG);
commandIterator.add("-disablesystemassertions");
}
//now any inner assertions
Iterator it = clause.assertionList.iterator();
while (it.hasNext()) {
BaseAssertion assertion = (BaseAssertion) it.next();
String arg = assertion.toCommand();
getProject().log("adding assertion " + arg, Project.MSG_DEBUG);
commandIterator.add(arg);
}
}
/**
* helper method to add a string JVM argument to a command
* @param command
* @param arg
*/
private static void addVmArgument(CommandlineJava command, String arg) {
Commandline.Argument argument;
argument = command.createVmArgument();
argument.setValue(arg);
}
/**
* clone the objects.
* This is not a full depth clone; the list of assertions is cloned,
* but it does not clone the underlying assertions.
* @return a cli
* @throws CloneNotSupportedException if the super class does not support cloning
*/
public Object clone() throws CloneNotSupportedException {
Assertions that = (Assertions) super.clone();
that.assertionList = (ArrayList) assertionList.clone();
return that;
}
/**
* base class for our assertion elements.
*/
public abstract static class BaseAssertion {
private String packageName;
private String className;
/**
* name a class
* @param className a class name
*/
public void setClass(String className) {
this.className = className;
}
/**
* name a package
* @param packageName a package name
*/
public void setPackage(String packageName) {
this.packageName = packageName;
}
/**
* what is the class name?
* @return classname or null
* @see #setClass
*/
protected String getClassName() {
return className;
}
/**
* what is the package name?
* @return package name or null
* @see #setPackage
*/
protected String getPackageName() {
return packageName;
}
/**
* get the prefix used to begin the command; -ea or -da.
* @return prefix
*/
public abstract String getCommandPrefix();
/**
* create a full command string from this class
* @throws BuildException in case of trouble
* @return The command string
*/
public String toCommand() {
//catch invalidness
if (getPackageName() != null && getClassName() != null) {
throw new BuildException("Both package and class have been set");
}
StringBuffer command = new StringBuffer(getCommandPrefix());
//see if it is a package or a class
if (getPackageName() != null) {
//packages get a ... prefix
command.append(':');
command.append(getPackageName());
if (!command.toString().endsWith("...")) {
//append the ... suffix if not there already
command.append("...");
}
} else if (getClassName() != null) {
//classes just get the classname
command.append(':');
command.append(getClassName());
}
return command.toString();
}
}
/**
* an enabled assertion enables things
*/
public static class EnabledAssertion extends BaseAssertion {
/**
* get the prefix used to begin the command; -ea or -da.
* @return prefix
*/
public String getCommandPrefix() {
return "-ea";
}
}
/**
* A disabled assertion disables things
*/
public static class DisabledAssertion extends BaseAssertion {
/**
* get the prefix used to begin the command; -ea or -da.
* @return prefix
*/
public String getCommandPrefix() {
return "-da";
}
}
}
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