blob: d7d85f103a92ac6e5d64de4f14ccf0bbc97f961e [file] [log] [blame]
/*
* @(#)$Id$
*
* The Apache Software License, Version 1.1
*
*
* Copyright (c) 2001-2003 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 acknowledgment:
* "This product includes software developed by the
* Apache Software Foundation (http://www.apache.org/)."
* Alternately, this acknowledgment may appear in the software itself,
* if and wherever such third-party acknowledgments normally appear.
*
* 4. The names "Xalan" 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 name, without prior written
* permission of the Apache Software Foundation.
*
* 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 and was
* originally based on software copyright (c) 2001, Sun
* Microsystems., http://www.sun.com. For more
* information on the Apache Software Foundation, please see
* <http://www.apache.org/>.
*
* @author Jacek Ambroziak
* @author Santiago Pericas-Geertsen
* @author Morten Jorgensen
*
*/
package org.apache.xalan.xsltc.compiler;
import java.util.Vector;
import org.apache.xalan.xsltc.compiler.util.Type;
import org.apache.bcel.generic.*;
import org.apache.xalan.xsltc.compiler.util.*;
final class Text extends Instruction {
private String _text;
private boolean _escaping = true;
private boolean _ignore = false;
private boolean _textElement = false;
/**
* Create a blank Text syntax tree node.
*/
public Text() {
_textElement = true;
}
/**
* Create text syntax tree node.
* @param text is the text to put in the node.
*/
public Text(String text) {
_text = text;
}
/**
* Returns the text wrapped inside this node
* @return The text wrapped inside this node
*/
protected String getText() {
return _text;
}
/**
* Set the text for this node. Appends the given text to any already
* existing text (using string concatenation, so use only when needed).
* @param text is the text to wrap inside this node.
*/
protected void setText(String text) {
if (_text == null)
_text = text;
else
_text = _text + text;
}
public void display(int indent) {
indent(indent);
Util.println("Text");
indent(indent + IndentIncrement);
Util.println(_text);
}
public void parseContents(Parser parser) {
final String str = getAttribute("disable-output-escaping");
if ((str != null) && (str.equals("yes"))) _escaping = false;
parseChildren(parser);
if (_text == null) {
if (_textElement) {
_text = EMPTYSTRING;
}
else {
_ignore = true;
}
}
else if (_textElement) {
if (_text.length() == 0) _ignore = true;
}
else if (getParent() instanceof LiteralElement) {
LiteralElement element = (LiteralElement)getParent();
String space = element.getAttribute("xml:space");
if ((space == null) || (!space.equals("preserve")))
if (_text.trim().length() == 0) _ignore = true;
}
else {
if (_text.trim().length() == 0) _ignore = true;
}
}
public void ignore() {
_ignore = true;
}
public boolean isTextElement() {
return _textElement;
}
protected boolean contextDependent() {
return false;
}
public void translate(ClassGenerator classGen, MethodGenerator methodGen) {
final ConstantPoolGen cpg = classGen.getConstantPool();
final InstructionList il = methodGen.getInstructionList();
if (!_ignore) {
// Turn off character escaping if so is wanted.
final int esc = cpg.addInterfaceMethodref(OUTPUT_HANDLER,
"setEscaping", "(Z)Z");
if (!_escaping) {
il.append(methodGen.loadHandler());
il.append(new PUSH(cpg, false));
il.append(new INVOKEINTERFACE(esc, 2));
}
final int characters = cpg.addInterfaceMethodref(OUTPUT_HANDLER,
"characters",
"(" + STRING_SIG + ")V");
il.append(methodGen.loadHandler());
il.append(new PUSH(cpg, _text));
il.append(new INVOKEINTERFACE(characters, 2));
// Restore character escaping setting to whatever it was.
// Note: setEscaping(bool) returns the original (old) value
if (!_escaping) {
il.append(methodGen.loadHandler());
il.append(SWAP);
il.append(new INVOKEINTERFACE(esc, 2));
il.append(POP);
}
}
translateContents(classGen, methodGen);
}
}