| /* |
| * Copyright (c) 1997, 2011, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| package com.sun.tools.internal.xjc.generator.util; |
| |
| import com.sun.codemodel.internal.JCodeModel; |
| import com.sun.codemodel.internal.JExpr; |
| import com.sun.codemodel.internal.JExpression; |
| import com.sun.codemodel.internal.JStringLiteral; |
| import com.sun.xml.internal.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(<literal>); |
| 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(<literal>); |
| if( literal instanceof JStringLiteral ) |
| // optimize |
| return JExpr.lit( WhiteSpaceProcessor.collapse(((JStringLiteral)literal).str) ); |
| else |
| return codeModel.ref(WhiteSpaceProcessor.class) |
| .staticInvoke("collapse").arg(literal); |
| } |
| }; |
| } |