//--------------------------------------------------------------------------
// 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)
*/
class
ASTAssign extends
SimpleNode
{
public
ASTAssign(int
id) {
super(
id);
}
public
ASTAssign(
OgnlParser p, int
id) {
super(
p,
id);
}
protected
Object getValueBody(
OgnlContext context,
Object source ) throws
OgnlException
{
Object result =
_children[1].
getValue(
context,
source );
_children[0].
setValue(
context,
source,
result );
return
result;
}
public
String toString()
{
return
_children[0] + " = " +
_children[1];
}
public
String toGetSourceString(
OgnlContext context,
Object target)
{
String result = "";
String first =
_children[0].
toGetSourceString(
context,
target);
String second = "";
if (
ASTProperty.class.
isInstance(
_children[1])) {
second += "((" +
OgnlRuntime.
getCompiler().
getClassName(
target.
getClass()) + ")$2).";
}
second +=
_children[1].
toGetSourceString(
context,
target);
if (
ASTSequence.class.
isAssignableFrom(
_children[1].
getClass())) {
ASTSequence seq = (
ASTSequence)
_children[1];
context.
setCurrentType(
Object.class);
String core =
seq.
getCoreExpression();
if (
core.
endsWith(";"))
core =
core.
substring(0,
core.
lastIndexOf(";"));
second =
OgnlRuntime.
getCompiler().
createLocalReference(
context,
"ognl.OgnlOps.returnValue(($w)" +
core + ", ($w) " +
seq.
getLastExpression() + ")",
Object.class);
}
if (
NodeType.class.
isInstance(
_children[1])
&& !
ASTProperty.class.
isInstance(
_children[1])
&& ((
NodeType)
_children[1]).
getGetterClass() != null && !
OrderedReturn.class.
isInstance(
_children[1])) {
second = "new " + ((
NodeType)
_children[1]).
getGetterClass().
getName() + "(" +
second + ")";
}
if (
OrderedReturn.class.
isAssignableFrom(
_children[0].
getClass())
&& ((
OrderedReturn)
_children[0]).
getCoreExpression() != null) {
context.
setCurrentType(
Object.class);
result =
first +
second + ")";
// System.out.println("building ordered ret from child[0] with result of:" + result);
result =
OgnlRuntime.
getCompiler().
createLocalReference(
context,
"ognl.OgnlOps.returnValue(($w)" +
result + ", ($w)" + ((
OrderedReturn)
_children[0]).
getLastExpression() + ")",
Object.class);
}
return
result;
}
public
String toSetSourceString(
OgnlContext context,
Object target)
{
String result = "";
result +=
_children[0].
toSetSourceString(
context,
target);
if (
ASTProperty.class.
isInstance(
_children[1])) {
result += "((" +
OgnlRuntime.
getCompiler().
getClassName(
target.
getClass()) + ")$2).";
}
String value =
_children[1].
toSetSourceString(
context,
target);
if (
value == null)
throw new
UnsupportedCompilationException("Value for assignment is null, can't enhance statement to bytecode.");
if (
ASTSequence.class.
isAssignableFrom(
_children[1].
getClass())) {
ASTSequence seq = (
ASTSequence)
_children[1];
result =
seq.
getCoreExpression() +
result;
value =
seq.
getLastExpression();
}
if (
NodeType.class.
isInstance(
_children[1])
&& !
ASTProperty.class.
isInstance(
_children[1])
&& ((
NodeType)
_children[1]).
getGetterClass() != null) {
value = "new " + ((
NodeType)
_children[1]).
getGetterClass().
getName() + "(" +
value + ")";
}
return
result +
value + ")";
}
}