/*****************************************************************************
* Licensed to the Apache Software Foundation (ASF) under one *
* or more contributor license agreements. See the NOTICE file *
* distributed with this work for additional information *
* regarding copyright ownership. The ASF licenses this file *
* to you under the Apache License, Version 2.0 (the *
* "License"); you may not use this file except in compliance *
* with the License. You may obtain a copy of the License at *
* *
* http://www.apache.org/licenses/LICENSE-2.0 *
* *
* Unless required by applicable law or agreed to in writing, *
* software distributed under the License is distributed on an *
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY *
* KIND, either express or implied. See the License for the *
* specific language governing permissions and limitations *
* under the License. *
* *
* *
* This file is part of the BeanShell Java Scripting distribution. *
* Documentation and updates may be found at http://www.beanshell.org/ *
* Patrick Niemeyer (pat@pat.net) *
* Author of Learning Java, O'Reilly & Associates *
* *
*****************************************************************************/
package bsh;
class
BSHTypedVariableDeclaration extends
SimpleNode
{
public
Modifiers modifiers;
BSHTypedVariableDeclaration(int
id) { super(
id); }
private
BSHType getTypeNode() {
return ((
BSHType)
jjtGetChild(0));
}
Class evalType(
CallStack callstack,
Interpreter interpreter )
throws
EvalError
{
BSHType typeNode =
getTypeNode();
return
typeNode.
getType(
callstack,
interpreter );
}
BSHVariableDeclarator []
getDeclarators()
{
int
n =
jjtGetNumChildren();
int
start=1;
BSHVariableDeclarator []
bvda = new
BSHVariableDeclarator[
n-
start ];
for (int
i =
start;
i <
n;
i++)
{
bvda[
i-
start] = (
BSHVariableDeclarator)
jjtGetChild(
i);
}
return
bvda;
}
/**
evaluate the type and one or more variable declarators, e.g.:
int a, b=5, c;
*/
public
Object eval(
CallStack callstack,
Interpreter interpreter)
throws
EvalError
{
try {
NameSpace namespace =
callstack.
top();
BSHType typeNode =
getTypeNode();
Class type =
typeNode.
getType(
callstack,
interpreter );
BSHVariableDeclarator []
bvda =
getDeclarators();
for (int
i = 0;
i <
bvda.length;
i++)
{
BSHVariableDeclarator dec =
bvda[
i];
// Type node is passed down the chain for array initializers
// which need it under some circumstances
Object value =
dec.
eval(
typeNode,
callstack,
interpreter);
try {
namespace.
setTypedVariable(
dec.
name,
type,
value,
modifiers );
} catch (
UtilEvalError e ) {
throw
e.
toEvalError( this,
callstack );
}
}
} catch (
EvalError e ) {
e.
reThrow( "Typed variable declaration" );
}
return
Primitive.
VOID;
}
public
String getTypeDescriptor(
CallStack callstack,
Interpreter interpreter,
String defaultPackage )
{
return
getTypeNode().
getTypeDescriptor(
callstack,
interpreter,
defaultPackage );
}
}