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/*****************************************************************************
* *
* 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;
}
}
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