/*****************************************************************************
* *
* This file is part of the BeanShell Java Scripting distribution. *
* Documentation and updates may be found at http://www.beanshell.org/ *
* *
* Sun Public License Notice: *
* *
* The contents of this file are subject to the Sun Public License Version *
* 1.0 (the "License"); you may not use this file except in compliance with *
* the License. A copy of the License is available at http://www.sun.com *
* *
* The Original Code is BeanShell. The Initial Developer of the Original *
* Code is Pat Niemeyer. Portions created by Pat Niemeyer are Copyright *
* (C) 2000. All Rights Reserved. *
* *
* GNU Public License Notice: *
* *
* Alternatively, the contents of this file may be used under the terms of *
* the GNU Lesser General Public License (the "LGPL"), in which case the *
* provisions of LGPL are applicable instead of those above. If you wish to *
* allow use of your version of this file only under the terms of the LGPL *
* and not to allow others to use your version of this file under the SPL, *
* indicate your decision by deleting the provisions above and replace *
* them with the notice and other provisions required by the LGPL. If you *
* do not delete the provisions above, a recipient may use your version of *
* this file under either the SPL or the LGPL. *
* *
* Patrick Niemeyer (pat@pat.net) *
* Author of Learning Java, O'Reilly & Associates *
* http://www.pat.net/~pat/ *
* *
*****************************************************************************/
package bsh;
class
BSHFormalParameters extends
SimpleNode
{
private
String []
paramNames;
/**
For loose type parameters the paramTypes are null.
*/
// unsafe caching of types
Class []
paramTypes;
int
numArgs;
String []
typeDescriptors;
BSHFormalParameters(int
id) { super(
id); }
void
insureParsed()
{
if (
paramNames != null )
return;
this.
numArgs =
jjtGetNumChildren();
String []
paramNames = new
String[
numArgs];
for(int
i=0;
i<
numArgs;
i++)
{
BSHFormalParameter param = (
BSHFormalParameter)
jjtGetChild(
i);
paramNames[
i] =
param.
name;
}
this.
paramNames =
paramNames;
}
public
String []
getParamNames() {
insureParsed();
return
paramNames;
}
public
String []
getTypeDescriptors(
CallStack callstack,
Interpreter interpreter,
String defaultPackage )
{
if (
typeDescriptors != null )
return
typeDescriptors;
insureParsed();
String []
typeDesc = new
String[
numArgs];
for(int
i=0;
i<
numArgs;
i++)
{
BSHFormalParameter param = (
BSHFormalParameter)
jjtGetChild(
i);
typeDesc[
i] =
param.
getTypeDescriptor(
callstack,
interpreter,
defaultPackage );
}
this.
typeDescriptors =
typeDesc;
return
typeDesc;
}
/**
Evaluate the types.
Note that type resolution does not require the interpreter instance.
*/
public
Object eval(
CallStack callstack,
Interpreter interpreter )
throws
EvalError
{
if (
paramTypes != null )
return
paramTypes;
insureParsed();
Class []
paramTypes = new
Class[
numArgs];
for(int
i=0;
i<
numArgs;
i++)
{
BSHFormalParameter param = (
BSHFormalParameter)
jjtGetChild(
i);
paramTypes[
i] = (
Class)
param.
eval(
callstack,
interpreter );
}
this.
paramTypes =
paramTypes;
return
paramTypes;
}
}