pjs/ef/Runtime/System/Method.h

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C

/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*-
*
* The contents of this file are subject to the Netscape Public License
* Version 1.0 (the "NPL"); you may not use this file except in
* compliance with the NPL. You may obtain a copy of the NPL at
* http://www.mozilla.org/NPL/
*
* Software distributed under the NPL is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
* for the specific language governing rights and limitations under the
* NPL.
*
* The Initial Developer of this code under the NPL is Netscape
* Communications Corporation. Portions created by Netscape are
* Copyright (C) 1998 Netscape Communications Corporation. All Rights
* Reserved.
*/
#ifndef METHOD_H
#define METHOD_H
#include "JavaObject.h"
// Utility class for passing method signatures around.
// This struct is not related to the heavyweight Method class.
struct Signature
{
uint nArguments; // Number of method arguments (including "this" if present)
const Type **argumentTypes; // Array of nArgument Types of arguments
const Type *resultType; // Type of result; the Void primitive type if no result
bool isStatic; // True if method has no "this" argument
uint getNResults() const {return resultType->typeKind != tkVoid;}
uint nArgumentSlots() const;
uint nResultSlots() const;
};
// --- INLINES ----------------------------------------------------------------
//
// Return the number of Java environment slots that this signature's result
// would take. Void takes no slots, long and double take two slots, and all
// other types take one slot.
//
inline uint Signature::nResultSlots() const
{
assert(resultType);
return nTypeKindSlots(resultType->typeKind);
}
#endif