/*
* Copyright (c) 1998-2007 Caucho Technology -- all rights reserved
*
* This file is part of Resin(R) Open Source
*
* Each copy or derived work must preserve the copyright notice and this
* notice unmodified.
*
* Resin Open Source is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* Resin Open Source is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, or any warranty
* of NON-INFRINGEMENT. See the GNU General Public License for more
* details.
*
* You should have received a copy of the GNU General Public License
* along with Resin Open Source; if not, write to the
*
* Free Software Foundation, Inc.
* 59 Temple Place, Suite 330
* Boston, MA 02111-1307 USA
*
* @author Nam Nguyen
*/
package com.caucho.quercus.lib.reflection;
import com.caucho.quercus.env.Env;
import com.caucho.quercus.env.QuercusClass;
import com.caucho.quercus.env.Value;
import com.caucho.quercus.expr.RequiredExpr;
import com.caucho.quercus.function.AbstractFunction;
import com.caucho.quercus.program.Arg;
import com.caucho.util.L10N;
public class ReflectionParameter
implements Reflector
{
private static final L10N L = new L10N(ReflectionParameter.class);
private String _clsName;
private AbstractFunction _fun;
private Arg _arg;
protected ReflectionParameter(AbstractFunction fun, Arg arg)
{
_fun = fun;
_arg = arg;
}
protected ReflectionParameter(String clsName,
AbstractFunction fun,
Arg arg)
{
this(fun, arg);
_clsName = clsName;
}
@SuppressWarnings("unused")
final private void __clone()
{
}
public static ReflectionParameter __construct(Env env,
String funName,
String paramName)
{
AbstractFunction fun = env.findFunction(funName);
Arg []args = fun.getArgs();
for (int i = 0; i < args.length; i++) {
if (args[i].getName().equals(paramName))
return new ReflectionParameter(fun, args[i]);
}
throw new ReflectionException(L.l("cannot find parameter '{0}'", paramName));
}
public static String export(Env env,
Value function,
Value parameter,
boolean isReturn)
{
return null;
}
public String getName()
{
return _arg.getName();
}
public boolean isPassedByReference()
{
return _arg.isReference();
}
public ReflectionClass getDeclaringClass(Env env)
{
if (_clsName != null) {
QuercusClass cls = env.findClass(_clsName);
QuercusClass parent = cls.getParent();
if (parent == null || parent.findFunction(_fun.getName()) != _fun)
return new ReflectionClass(cls);
else
return getDeclaringClass(env, parent);
}
else
return null;
}
private ReflectionClass getDeclaringClass(Env env, QuercusClass cls)
{
if (cls == null)
return null;
ReflectionClass refClass = getDeclaringClass(env, cls.getParent());
if (refClass != null)
return refClass;
else if (cls.findFunction(_fun.getName()) != null)
return new ReflectionClass(cls);
else
return null;
}
public ReflectionClass getClass(Env env)
{
return null;
}
public boolean isArray()
{
return false;
}
public boolean allowsNull()
{
return false;
}
public boolean isOptional()
{
return ! (_arg.getDefault() instanceof RequiredExpr);
}
public boolean isDefaultValueAvailable()
{
return isOptional();
}
public Value getDefaultValue(Env env)
{
//XXX: more specific exception
if (! isOptional())
throw new ReflectionException(L.l("parameter '{0}' is not optional", _arg.getName()));
return _arg.getDefault().eval(env);
}
public String toString()
{
return "ReflectionParameter[" + _fun.getName() + "(" + _arg.getName() + ")]";
}
}