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feilong is a suite of core and expanded libraries that include utility classes, http, excel,cvs, io classes, and much much more.
// --------------------------------------------------------------------------
// 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 com.feilong.lib.ognl;
import java.math.BigDecimal;
import java.math.BigInteger;
import com.feilong.lib.ognl.enhance.UnsupportedCompilationException;
/**
* @author Luke Blanshard ([email protected])
* @author Drew Davidson ([email protected])
*/
public class ASTConst extends SimpleNode implements NodeType{
/**
*
*/
private static final long serialVersionUID = -6491929408266740070L;
private Object value;
private Class _getterClass;
public ASTConst(int id){
super(id);
}
public ASTConst(OgnlParser p, int id){
super(p, id);
}
/**
* Called from parser actions.
*
* @param value
* the Object representing the value.
*/
public void setValue(Object value){
this.value = value;
}
public Object getValue(){
return value;
}
@Override
protected Object getValueBody(OgnlContext context,Object source) throws OgnlException{
return this.value;
}
@Override
public boolean isNodeConstant(OgnlContext context) throws OgnlException{
return true;
}
@Override
public Class getGetterClass(){
if (_getterClass == null){
return null;
}
return _getterClass;
}
@Override
public Class getSetterClass(){
return null;
}
@Override
public String toString(){
String result;
if (value == null){
result = "null";
}else{
if (value instanceof String){
result = '\"' + OgnlOps.getEscapeString(value.toString()) + '\"';
}else{
if (value instanceof Character){
result = '\'' + OgnlOps.getEscapedChar(((Character) value).charValue()) + '\'';
}else{
result = value.toString();
if (value instanceof Long){
result = result + "L";
}else{
if (value instanceof BigDecimal){
result = result + "B";
}else{
if (value instanceof BigInteger){
result = result + "H";
}else{
if (value instanceof Node){
result = ":[ " + result + " ]";
}
}
}
}
}
}
}
return result;
}
@Override
public String toGetSourceString(OgnlContext context,Object target){
if (value == null && _parent != null && ExpressionNode.class.isInstance(_parent)){
context.setCurrentType(null);
return "null";
}else if (value == null){
context.setCurrentType(null);
return "";
}
_getterClass = value.getClass();
Object retval = value;
if (_parent != null && ASTProperty.class.isInstance(_parent)){
context.setCurrentObject(value);
return value.toString();
}else if (value != null && Number.class.isAssignableFrom(value.getClass())){
context.setCurrentType(OgnlRuntime.getPrimitiveWrapperClass(value.getClass()));
context.setCurrentObject(value);
return value.toString();
}else if (!(_parent != null && value != null && NumericExpression.class.isAssignableFrom(_parent.getClass()))
&& String.class.isAssignableFrom(value.getClass())){
context.setCurrentType(String.class);
retval = '\"' + OgnlOps.getEscapeString(value.toString()) + '\"';
context.setCurrentObject(retval.toString());
return retval.toString();
}else if (Character.class.isInstance(value)){
Character val = (Character) value;
context.setCurrentType(Character.class);
if (Character.isLetterOrDigit(val.charValue())){
retval = "'" + ((Character) value).charValue() + "'";
}else{
retval = "'" + OgnlOps.getEscapedChar(((Character) value).charValue()) + "'";
}
context.setCurrentObject(retval);
return retval.toString();
}
if (Boolean.class.isAssignableFrom(value.getClass())){
_getterClass = Boolean.TYPE;
context.setCurrentType(Boolean.TYPE);
context.setCurrentObject(value);
return value.toString();
}
return value.toString();
}
@Override
public String toSetSourceString(OgnlContext context,Object target){
if (_parent == null){
throw new UnsupportedCompilationException("Can't modify constant values.");
}
return toGetSourceString(context, target);
}
}