//--------------------------------------------------------------------------
// Copyright (c) 1998-2004, Drew Davidson and Luke Blanshard
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// Redistributions of source code must retain the above copyright notice,
// this list of conditions and the following disclaimer.
// 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.
// Neither the name of the Drew Davidson nor the names of its contributors
// may be used to endorse or promote products derived from this software
// without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS 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
// COPYRIGHT OWNER OR 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.
//--------------------------------------------------------------------------
package ognl;
import ognl.enhance.ExpressionCompiler;
import ognl.enhance.UnsupportedCompilationException;
/**
* @author Luke Blanshard (blanshlu@netscape.net)
* @author Drew Davidson (drew@ognl.org)
*/
public class ASTOr extends BooleanExpression {
public ASTOr(int id)
{
super(id);
}
public ASTOr(OgnlParser p, int id)
{
super(p, id);
}
public void jjtClose()
{
flattenTree();
}
protected Object getValueBody(OgnlContext context, Object source) throws OgnlException
{
Object result = null;
int last = _children.length - 1;
for (int i = 0; i <= last; ++i) {
result = _children[i].getValue(context, source);
if (i != last && OgnlOps.booleanValue(result))
break;
}
return result;
}
protected void setValueBody(OgnlContext context, Object target, Object value) throws OgnlException
{
int last = _children.length - 1;
for (int i = 0; i < last; ++i) {
Object v = _children[i].getValue(context, target);
if (OgnlOps.booleanValue(v))
return;
}
_children[last].setValue(context, target, value);
}
public String getExpressionOperator(int index)
{
return "||";
}
public Class getGetterClass()
{
return null;
}
public String toGetSourceString(OgnlContext context, Object target)
{
if (_children.length != 2)
throw new UnsupportedCompilationException("Can only compile boolean expressions with two children.");
String result = "(";
try {
String first = OgnlRuntime.getChildSource(context, target, _children[0]);
if (!OgnlRuntime.isBoolean(first))
first = OgnlRuntime.getCompiler().createLocalReference(context, first, context.getCurrentType());
Class firstType = context.getCurrentType();
String second = OgnlRuntime.getChildSource(context, target, _children[1]);
if (!OgnlRuntime.isBoolean(second))
second = OgnlRuntime.getCompiler().createLocalReference(context, second, context.getCurrentType());
Class secondType = context.getCurrentType();
boolean mismatched = (firstType.isPrimitive() && !secondType.isPrimitive())
|| (!firstType.isPrimitive() && secondType.isPrimitive()) ? true : false;
result += "ognl.OgnlOps.booleanValue(" + first + ")";
result += " ? ";
result += (mismatched ? " ($w) " : "") + first;
result += " : ";
result += (mismatched ? " ($w) " : "") + second;
result += ")";
context.setCurrentObject(target);
context.setCurrentType(Boolean.TYPE);
} catch (Throwable t)
{
throw OgnlOps.castToRuntime(t);
}
return result;
}
public String toSetSourceString(OgnlContext context, Object target)
{
if (_children.length != 2)
throw new UnsupportedCompilationException("Can only compile boolean expressions with two children.");
String pre = (String) context.get("_currentChain");
if (pre == null)
pre = "";
String result = "";
try {
_children[0].getValue(context, target);
String first = ExpressionCompiler.getRootExpression(_children[0], context.getRoot(), context)
+ pre + _children[0].toGetSourceString(context, target);
if (!OgnlRuntime.isBoolean(first))
first = OgnlRuntime.getCompiler().createLocalReference(context, first, Object.class);
_children[1].getValue(context, target);
String second = ExpressionCompiler.getRootExpression(_children[1], context.getRoot(), context)
+ pre + _children[1].toSetSourceString(context, target);
if (!OgnlRuntime.isBoolean(second))
second = OgnlRuntime.getCompiler().createLocalReference(context, second, context.getCurrentType());
result += "ognl.OgnlOps.booleanValue(" + first + ")";
result += " ? ";
result += first;
result += " : ";
result += second;
context.setCurrentObject(target);
context.setCurrentType(Boolean.TYPE);
} catch (Throwable t)
{
throw OgnlOps.castToRuntime(t);
}
return result;
}
}