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/*
*
* Copyright 2001-2004 The Ant-Contrib project
*
* Licensed 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 net.sf.antcontrib.cpptasks.types;
import java.util.Vector;
import net.sf.antcontrib.cpptasks.CUtil;
import org.apache.tools.ant.BuildException;
import org.apache.tools.ant.types.DataType;
import org.apache.tools.ant.types.Reference;
/**
* Set of preprocessor macro defines and undefines.
*
* @author Mark A Russell <a
* href="mailto:mark_russell@csgsystems.com">mark_russell@csg_systems.com
* </a>
* @author Adam Murdoch
*/
public class DefineSet extends DataType {
private Vector defineList = new Vector();
private String ifCond = null;
private String unlessCond = null;
/**
*
* Adds a define element.
*
* @throws BuildException
* if reference
*/
public void addDefine(DefineArgument arg) throws BuildException {
if (isReference()) {
throw noChildrenAllowed();
}
defineList.addElement(arg);
}
/** Adds defines/undefines. */
private void addDefines(String[] defs, boolean isDefine) {
for (int i = 0; i < defs.length; i++) {
UndefineArgument def;
if (isDefine) {
def = new DefineArgument();
} else {
def = new UndefineArgument();
}
def.setName(defs[i]);
defineList.addElement(def);
}
}
/**
*
* Adds an undefine element.
*
* @throws BuildException
* if reference
*/
public void addUndefine(UndefineArgument arg) throws BuildException {
if (isReference()) {
throw noChildrenAllowed();
}
defineList.addElement(arg);
}
public void execute() throws org.apache.tools.ant.BuildException {
throw new org.apache.tools.ant.BuildException(
"Not an actual task, but looks like one for documentation purposes");
}
/** Returns the defines and undefines in this set. */
public UndefineArgument[] getDefines() throws BuildException {
if (isReference()) {
DefineSet defset = (DefineSet) getCheckedRef(DefineSet.class,
"DefineSet");
return defset.getDefines();
} else {
if (isActive()) {
UndefineArgument[] defs = new UndefineArgument[defineList
.size()];
defineList.copyInto(defs);
return defs;
} else {
return new UndefineArgument[0];
}
}
}
/**
* Returns true if the define's if and unless conditions (if any) are
* satisfied.
*
* @exception BuildException
* throws build exception if name is not set
*/
public final boolean isActive() throws BuildException {
return CUtil.isActive(getProject(), ifCond, unlessCond);
}
/**
* A comma-separated list of preprocessor macros to define. Use nested
* define elements to define macro values.
*
* @param defList
* comma-separated list of preprocessor macros
* @throws BuildException
* throw if defineset is a reference
*/
public void setDefine(CUtil.StringArrayBuilder defList)
throws BuildException {
if (isReference()) {
throw tooManyAttributes();
}
addDefines(defList.getValue(), true);
}
/**
* Sets a description of the current data type.
*/
public void setDescription(String desc) {
super.setDescription(desc);
}
/**
* Sets an id that can be used to reference this element.
*
* @param id
* id
*/
public void setId(String id) {
//
// this is actually accomplished by a different
// mechanism, but we can document it
//
}
/**
* Sets the property name for the 'if' condition.
*
* The define will be ignored unless the property is defined.
*
* The value of the property is insignificant, but values that would imply
* misinterpretation ("false", "no") will throw an exception when
* evaluated.
*
* @param propName
* property name
*/
public final void setIf(String propName) {
ifCond = propName;
}
/**
* Specifies that this element should behave as if the content of the
* element with the matching id attribute was inserted at this location. If
* specified, no other attributes or child content should be specified,
* other than "description".
*
*/
public void setRefid(Reference r) throws BuildException {
if (!defineList.isEmpty()) {
throw tooManyAttributes();
}
super.setRefid(r);
}
/**
* A comma-separated list of preprocessor macros to undefine.
*
* @param undefList
* comma-separated list of preprocessor macros
* @throws BuildException
* throw if defineset is a reference
*/
public void setUndefine(CUtil.StringArrayBuilder undefList)
throws BuildException {
if (isReference()) {
throw tooManyAttributes();
}
addDefines(undefList.getValue(), false);
}
/**
* Set the property name for the 'unless' condition.
*
* If named property is set, the define will be ignored.
*
* The value of the property is insignificant, but values that would imply
* misinterpretation ("false", "no") of the behavior will throw an
* exception when evaluated.
*
* @param propName
* name of property
*/
public final void setUnless(String propName) {
unlessCond = propName;
}
}
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