// --------------------------------------------------------------------------
// 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.OrderedReturn;
import ognl.enhance.UnsupportedCompilationException;
/**
* @author Luke Blanshard (blanshlu@netscape.net)
* @author Drew Davidson (drew@ognl.org)
*/
public class ASTVarRef extends SimpleNode implements NodeType, OrderedReturn {
private String _name;
protected Class _getterClass;
protected String _core;
protected String _last;
public ASTVarRef(int id)
{
super(id);
}
public ASTVarRef(OgnlParser p, int id)
{
super(p, id);
}
void setName(String name)
{
this._name = name;
}
protected Object getValueBody(OgnlContext context, Object source)
throws OgnlException
{
return context.get(_name);
}
protected void setValueBody(OgnlContext context, Object target, Object value)
throws OgnlException
{
context.put(_name, value);
}
public Class getGetterClass()
{
return _getterClass;
}
public Class getSetterClass()
{
return null;
}
public String getCoreExpression()
{
return _core;
}
public String getLastExpression()
{
return _last;
}
public String toString()
{
return "#" + _name;
}
public String toGetSourceString(OgnlContext context, Object target)
{
Object value = context.get(_name);
if (value != null) {
_getterClass = value.getClass();
}
context.setCurrentType(_getterClass);
context.setCurrentAccessor(context.getClass());
context.setCurrentObject(value);
//context.setRoot(context.get(_name));
if (context.getCurrentObject() == null)
throw new UnsupportedCompilationException("Current context object is null, can't compile var reference.");
String pre = "";
String post = "";
if (context.getCurrentType() != null) {
pre = "((" + OgnlRuntime.getCompiler().getInterfaceClass(context.getCurrentType()).getName() + ")";
post = ")";
}
if (_parent != null && ASTAssign.class.isInstance(_parent)) {
_core = "$1.put(\"" + _name + "\",";
_last = pre + "$1.get(\"" + _name + "\")" + post;
return _core;
}
return pre + "$1.get(\"" + _name + "\")" + post;
}
public String toSetSourceString(OgnlContext context, Object target)
{
return toGetSourceString(context, target);
}
}