// --------------------------------------------------------------------------
// 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 java.lang.reflect.
Array;
import java.lang.reflect.
Constructor;
import java.util.
List;
/**
* @author Luke Blanshard (blanshlu@netscape.net)
* @author Drew Davidson (drew@ognl.org)
*/
public class
ASTCtor extends
SimpleNode
{
private
String className;
private boolean
isArray;
public
ASTCtor(int
id)
{
super(
id);
}
public
ASTCtor(
OgnlParser p, int
id)
{
super(
p,
id);
}
/** Called from parser action. */
void
setClassName(
String className)
{
this.
className =
className;
}
Class getCreatedClass(
OgnlContext context) throws
ClassNotFoundException {
return
OgnlRuntime.
classForName(
context,
className);
}
void
setArray(boolean
value)
{
isArray =
value;
}
public boolean
isArray()
{
return
isArray;
}
protected
Object getValueBody(
OgnlContext context,
Object source)
throws
OgnlException
{
Object result,
root =
context.
getRoot();
int
count =
jjtGetNumChildren();
Object[]
args =
OgnlRuntime.
getObjectArrayPool().
create(
count);
try {
for(int
i = 0;
i <
count; ++
i) {
args[
i] =
_children[
i].
getValue(
context,
root);
}
if (
isArray) {
if (
args.length == 1) {
try {
Class componentClass =
OgnlRuntime.
classForName(
context,
className);
List sourceList = null;
int
size;
if (
args[0] instanceof
List) {
sourceList = (
List)
args[0];
size =
sourceList.
size();
} else {
size = (int)
OgnlOps.
longValue(
args[0]);
}
result =
Array.
newInstance(
componentClass,
size);
if (
sourceList != null) {
TypeConverter converter =
context.
getTypeConverter();
for(int
i = 0,
icount =
sourceList.
size();
i <
icount;
i++) {
Object o =
sourceList.
get(
i);
if ((
o == null) ||
componentClass.
isInstance(
o)) {
Array.
set(
result,
i,
o);
} else {
Array.
set(
result,
i,
converter.
convertValue(
context, null, null, null,
o,
componentClass));
}
}
}
} catch (
ClassNotFoundException ex) {
throw new
OgnlException("array component class '" +
className + "' not found",
ex);
}
} else {
throw new
OgnlException("only expect array size or fixed initializer list");
}
} else {
result =
OgnlRuntime.
callConstructor(
context,
className,
args);
}
return
result;
} finally {
OgnlRuntime.
getObjectArrayPool().
recycle(
args);
}
}
public
String toString()
{
String result = "new " +
className;
if (
isArray) {
if (
_children[0] instanceof
ASTConst) {
result =
result + "[" +
_children[0] + "]";
} else {
result =
result + "[] " +
_children[0];
}
} else {
result =
result + "(";
if ((
_children != null) && (
_children.length > 0)) {
for(int
i = 0;
i <
_children.length;
i++) {
if (
i > 0) {
result =
result + ", ";
}
result =
result +
_children[
i];
}
}
result =
result + ")";
}
return
result;
}
public
String toGetSourceString(
OgnlContext context,
Object target)
{
String result = "new " +
className;
Class clazz = null;
Object ctorValue = null;
try {
clazz =
OgnlRuntime.
classForName(
context,
className);
ctorValue = this.
getValueBody(
context,
target);
context.
setCurrentObject(
ctorValue);
if (
clazz != null &&
ctorValue != null) {
context.
setCurrentType(
ctorValue.
getClass());
context.
setCurrentAccessor(
ctorValue.
getClass());
}
if (
isArray)
context.
put("_ctorClass",
clazz);
} catch (
Throwable t)
{
throw
OgnlOps.
castToRuntime(
t);
}
try {
if (
isArray) {
if (
_children[0] instanceof
ASTConst) {
result =
result + "[" +
_children[0].
toGetSourceString(
context,
target) + "]";
} else if (
ASTProperty.class.
isInstance(
_children[0])) {
result =
result + "["
+
ExpressionCompiler.
getRootExpression(
_children[0],
target,
context)
+
_children[0].
toGetSourceString(
context,
target)
+ "]";
} else if (
ASTChain.class.
isInstance(
_children[0])) {
result =
result + "[" +
_children[0].
toGetSourceString(
context,
target) + "]";
} else {
result =
result + "[] "+
_children[0].
toGetSourceString(
context,
target);
}
} else {
result =
result + "(";
if ((
_children != null) && (
_children.length > 0)) {
Object[]
values = new
Object[
_children.length];
String[]
expressions = new
String[
_children.length];
Class[]
types = new
Class[
_children.length];
// first populate arrays with child values
for(int
i = 0;
i <
_children.length;
i++) {
Object objValue =
_children[
i].
getValue(
context,
context.
getRoot());
String value =
_children[
i].
toGetSourceString(
context,
target);
if (!
ASTRootVarRef.class.
isInstance(
_children[
i]))
{
value =
ExpressionCompiler.
getRootExpression(
_children[
i],
target,
context) +
value;
}
String cast = "";
if (
ExpressionCompiler.
shouldCast(
_children[
i])) {
cast = (
String)
context.
remove(
ExpressionCompiler.
PRE_CAST);
}
if (
cast == null)
cast = "";
if (!
ASTConst.class.
isInstance(
_children[
i]))
value =
cast +
value;
values[
i] =
objValue;
expressions[
i] =
value;
types[
i] =
context.
getCurrentType();
}
// now try and find a matching constructor
Constructor[]
cons =
clazz.
getConstructors();
Constructor ctor = null;
Class[]
ctorParamTypes = null;
for (int
i=0;
i <
cons.length;
i++)
{
Class[]
ctorTypes =
cons[
i].
getParameterTypes();
if (
OgnlRuntime.
areArgsCompatible(
values,
ctorTypes)
&& (
ctor == null ||
OgnlRuntime.
isMoreSpecific(
ctorTypes,
ctorParamTypes))) {
ctor =
cons[
i];
ctorParamTypes =
ctorTypes;
}
}
if (
ctor == null)
ctor =
OgnlRuntime.
getConvertedConstructorAndArgs(
context,
clazz,
OgnlRuntime.
getConstructors(
clazz),
values, new
Object[
values.length]);
if (
ctor == null)
throw new
NoSuchMethodException("Unable to find constructor appropriate for arguments in class: " +
clazz);
ctorParamTypes =
ctor.
getParameterTypes();
// now loop over child values again and build up the actual source string
for(int
i = 0;
i <
_children.length;
i++) {
if (
i > 0) {
result =
result + ", ";
}
String value =
expressions[
i];
if (
types[
i].
isPrimitive()) {
String literal =
OgnlRuntime.
getNumericLiteral(
types[
i]);
if (
literal != null)
value +=
literal;
}
if (
ctorParamTypes[
i] !=
types[
i]) {
if (
values[
i] != null && !
types[
i].
isPrimitive()
&& !
values[
i].
getClass().
isArray() && !
ASTConst.class.
isInstance(
_children[
i])) {
value = "(" +
OgnlRuntime.
getCompiler().
getInterfaceClass(
values[
i].
getClass()).
getName() + ")" +
value;
} else if (!
ASTConst.class.
isInstance(
_children[
i])
|| (
ASTConst.class.
isInstance(
_children[
i]) && !
types[
i].
isPrimitive())) {
if (!
types[
i].
isArray()
&&
types[
i].
isPrimitive() && !
ctorParamTypes[
i].
isPrimitive())
value = "new " +
ExpressionCompiler.
getCastString(
OgnlRuntime.
getPrimitiveWrapperClass(
types[
i])) + "(" +
value + ")";
else
value = " ($w) " +
value;
}
}
result +=
value;
}
}
result =
result + ")";
}
context.
setCurrentType(
ctorValue != null ?
ctorValue.
getClass() :
clazz);
context.
setCurrentAccessor(
clazz);
context.
setCurrentObject(
ctorValue);
} catch (
Throwable t)
{
throw
OgnlOps.
castToRuntime(
t);
}
context.
remove("_ctorClass");
return
result;
}
public
String toSetSourceString(
OgnlContext context,
Object target)
{
return "";
}
}