/*
* Copyright (c) 1998-2010 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 Scott Ferguson
*/
package com.caucho.quercus.env;
import com.caucho.quercus.expr.Expr;
import com.caucho.quercus.function.AbstractFunction;
import com.caucho.util.L10N;
/**
* Represents the introspected static function information.
*/
abstract public class AbstractJavaMethod extends AbstractFunction {
private static final L10N L = new L10N(AbstractJavaMethod.class);
private static final Object[] NULL_ARGS = new Object[0];
private static final Value[] NULL_VALUES = new Value[0];
/**
* Returns the minimally required number of arguments.
*/
abstract public int getMinArgLength();
/**
* Returns the maximum number of arguments allowed.
*/
abstract public int getMaxArgLength();
/**
* Returns true if the function can take in unlimited number of args.
*/
abstract public boolean getHasRestArgs();
abstract public int getMarshalingCost(Value[] args);
abstract public int getMarshalingCost(Expr[] args);
public Class getJavaDeclaringClass() {
return null;
}
public Class[] getJavaParameterTypes() {
return null;
}
/**
* Returns an overloaded java method.
*/
public AbstractJavaMethod overload(AbstractJavaMethod fun) {
// same method can occur for interfaces and overrides
if (isSameMethod(this, fun)) {
// php/5220
if (getJavaDeclaringClass().isAssignableFrom(fun.getJavaDeclaringClass())) {
return fun;
} else {
return this;
}
}
AbstractJavaMethod method = new JavaOverloadMethod(this);
method = method.overload(fun);
return method;
}
/**
* Checks for the same method, e.g. for multiple interfaces declaring
* the same method.
*/
private boolean isSameMethod(AbstractJavaMethod funA,
AbstractJavaMethod funB) {
Class[] paramTypesA = funA.getJavaParameterTypes();
Class[] paramTypesB = funB.getJavaParameterTypes();
if (paramTypesA == null || paramTypesB == null) {
return false;
}
if (paramTypesA.length != paramTypesB.length) {
return false;
}
for (int i = 0; i < paramTypesA.length; i++) {
if (!paramTypesA[i].equals(paramTypesB[i])) {
return false;
}
}
return true;
}
@Override
abstract public Value callMethod(Env env,
QuercusClass qClass,
Value qThis,
Value[] args);
/**
* Evaluates the function, returning a copy
*/
@Override
public Value callCopy(Env env, Value[] args) {
return call(env, args);
}
@Override
public Value call(Env env, Value[] args) {
return callMethod(env, getQuercusClass(), (Value) null, args);
}
@Override
public Value call(Env env) {
return callMethod(env, getQuercusClass(), (Value) null,
new Value[0]);
}
@Override
public Value call(Env env, Value a1) {
return callMethod(env, getQuercusClass(), (Value) null,
new Value[]{a1});
}
@Override
public Value call(Env env, Value a1, Value a2) {
return callMethod(env, getQuercusClass(), (Value) null,
new Value[]{a1, a2});
}
@Override
public Value call(Env env, Value a1, Value a2, Value a3) {
return callMethod(env, getQuercusClass(), (Value) null,
new Value[]{a1, a2, a3});
}
@Override
public Value call(Env env,
Value a1, Value a2, Value a3, Value a4) {
return callMethod(env, getQuercusClass(), (Value) null,
new Value[]{a1, a2, a3, a4});
}
@Override
public Value call(Env env,
Value a1, Value a2, Value a3, Value a4, Value a5) {
return callMethod(env, getQuercusClass(), (Value) null,
new Value[]{a1, a2, a3, a4, a5});
}
@Override
public Value callMethod(Env env, QuercusClass qClass, Value qThis) {
return callMethod(env, qClass, qThis, new Value[0]);
}
@Override
public Value callMethod(Env env, QuercusClass qClass, Value qThis, Value a1) {
return callMethod(env, qClass, qThis, new Value[]{a1});
}
@Override
public Value callMethod(Env env,
QuercusClass qClass,
Value qThis,
Value a1,
Value a2) {
return callMethod(env, qClass, qThis, new Value[]{a1, a2});
}
@Override
public Value callMethod(Env env,
QuercusClass qClass,
Value qThis,
Value a1,
Value a2,
Value a3) {
return callMethod(env, qClass, qThis, new Value[]{a1, a2, a3});
}
@Override
public Value callMethod(Env env, QuercusClass qClass, Value qThis,
Value a1, Value a2, Value a3, Value a4) {
return callMethod(env, qClass, qThis, new Value[]{a1, a2, a3, a4});
}
@Override
public Value callMethod(Env env, QuercusClass qClass, Value qThis,
Value a1, Value a2, Value a3, Value a4, Value a5) {
return callMethod(env, qClass, qThis,
new Value[]{a1, a2, a3, a4, a5});
}
}