com.sun.tools.xjc.generator.util.WhitespaceNormalizer Maven / Gradle / Ivy
/*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
*
* Copyright (c) 1997-2011 Oracle and/or its affiliates. All rights reserved.
*
* The contents of this file are subject to the terms of either the GNU
* General Public License Version 2 only ("GPL") or the Common Development
* and Distribution License("CDDL") (collectively, the "License"). You
* may not use this file except in compliance with the License. You can
* obtain a copy of the License at
* https://glassfish.dev.java.net/public/CDDL+GPL_1_1.html
* or packager/legal/LICENSE.txt. See the License for the specific
* language governing permissions and limitations under the License.
*
* When distributing the software, include this License Header Notice in each
* file and include the License file at packager/legal/LICENSE.txt.
*
* GPL Classpath Exception:
* Oracle designates this particular file as subject to the "Classpath"
* exception as provided by Oracle in the GPL Version 2 section of the License
* file that accompanied this code.
*
* Modifications:
* If applicable, add the following below the License Header, with the fields
* enclosed by brackets [] replaced by your own identifying information:
* "Portions Copyright [year] [name of copyright owner]"
*
* Contributor(s):
* If you wish your version of this file to be governed by only the CDDL or
* only the GPL Version 2, indicate your decision by adding "[Contributor]
* elects to include this software in this distribution under the [CDDL or GPL
* Version 2] license." If you don't indicate a single choice of license, a
* recipient has the option to distribute your version of this file under
* either the CDDL, the GPL Version 2 or to extend the choice of license to
* its licensees as provided above. However, if you add GPL Version 2 code
* and therefore, elected the GPL Version 2 license, then the option applies
* only if the new code is made subject to such option by the copyright
* holder.
*/
package com.sun.tools.xjc.generator.util;
import com.sun.codemodel.JCodeModel;
import com.sun.codemodel.JExpr;
import com.sun.codemodel.JExpression;
import com.sun.codemodel.JStringLiteral;
import com.sun.xml.bind.WhiteSpaceProcessor;
/**
* Generates code that performs the whitespace normalization.
*/
public abstract class WhitespaceNormalizer
{
/**
* Generates the expression that normalizes
* the given expression (which evaluates to java.lang.String).
*
* @param codeModel
* The owner code model object under which a new expression
* will be created.
*/
public abstract JExpression generate( JCodeModel codeModel, JExpression literal );
/**
* Parses "preserve","replace" or "collapse" into
* the corresponding WhitespaceNormalizer object.
*
* @param method
* Either "preserve", "replace", or "collapse"
*
* @exception IllegalArgumentException
* when the specified method is invalid.
*/
public static WhitespaceNormalizer parse( String method ) {
if( method.equals("preserve") )
return PRESERVE;
if( method.equals("replace") )
return REPLACE;
if( method.equals("collapse") )
return COLLAPSE;
throw new IllegalArgumentException(method);
}
public static final WhitespaceNormalizer PRESERVE = new WhitespaceNormalizer() {
public JExpression generate( JCodeModel codeModel, JExpression literal ) {
return literal;
}
};
public static final WhitespaceNormalizer REPLACE = new WhitespaceNormalizer() {
public JExpression generate( JCodeModel codeModel, JExpression literal ) {
// WhitespaceProcessor.replace();
if( literal instanceof JStringLiteral )
// optimize
return JExpr.lit( WhiteSpaceProcessor.replace(((JStringLiteral)literal).str) );
else
return codeModel.ref(WhiteSpaceProcessor.class)
.staticInvoke("replace").arg(literal);
}
};
public static final WhitespaceNormalizer COLLAPSE = new WhitespaceNormalizer() {
public JExpression generate( JCodeModel codeModel, JExpression literal ) {
// WhitespaceProcessor.replace();
if( literal instanceof JStringLiteral )
// optimize
return JExpr.lit( WhiteSpaceProcessor.collapse(((JStringLiteral)literal).str) );
else
return codeModel.ref(WhiteSpaceProcessor.class)
.staticInvoke("collapse").arg(literal);
}
};
}