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git-svn-id: svn+ssh://svn.gna.org/svn/gnustep/libs/base/trunk@29615 72102866-910b-0410-8b05-ffd578937521
113 lines
3.6 KiB
Objective-C
113 lines
3.6 KiB
Objective-C
/* Interface for NSMethodSignature for GNUStep
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Copyright (C) 1995, 1998 Free Software Foundation, Inc.
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Written by: Andrew Kachites McCallum <mccallum@gnu.ai.mit.edu>
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Date: 1995
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Rewritten: Richard Frith-Macdonald <richard@brainstorm.co.uk>
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Date: 1998
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This file is part of the GNUstep Base Library.
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with this library; if not, write to the Free
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Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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Boston, MA 02111 USA.
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*/
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#ifndef __NSMethodSignature_h_GNUSTEP_BASE_INCLUDE
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#define __NSMethodSignature_h_GNUSTEP_BASE_INCLUDE
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#import <GNUstepBase/GSVersionMacros.h>
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#import <Foundation/NSObject.h>
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#if defined(__cplusplus)
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extern "C" {
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#endif
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/**
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* <p>Class encapsulating type information for method arguments and return
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* value. It is used as a component of [NSInvocation] to implement message
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* forwarding, such as within the distributed objects framework. Instances
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* can be obtained from the [NSObject] method
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* [NSObject-methodSignatureForSelector:].</p>
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*
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* <p>Basically, types are represented as Objective-C <code>@encode(...)</code>
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* compatible strings. The arguments are
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* numbered starting from 0, including the implicit arguments
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* <code><em>self</em></code> (type <code>id</code>, at position 0) and
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* <code><em>_cmd</em></code> (type <code>SEL</code>, at position 1).</p>
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*/
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@interface NSMethodSignature : NSObject
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{
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#if GS_EXPOSE(NSMethodSignature)
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@private
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const char *_methodTypes;
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NSUInteger _argFrameLength;
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NSUInteger _numArgs;
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void *_info;
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#endif
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}
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/**
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* Build a method signature directly from string description of return type and
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* argument types, using the Objective-C <code>@encode(...)</code> type codes.
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*/
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+ (NSMethodSignature*) signatureWithObjCTypes: (const char*)t;
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/**
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* Number of bytes that the full set of arguments occupies on the stack, which
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* is platform(hardware)-dependent.
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*/
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- (NSUInteger) frameLength;
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/**
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* Returns Objective-C <code>@encode(...)</code> compatible string. Arguments
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* are numbered starting from 0, including the implicit arguments
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* <code><em>self</em></code> (type <code>id</code>, at position 0) and
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* <code><em>_cmd</em></code> (type <code>SEL</code>, at position 1).<br />
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* Type strings may include leading type qualifiers.
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*/
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- (const char*) getArgumentTypeAtIndex: (NSUInteger)index;
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/**
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* Pertains to distributed objects; method is asynchronous when invoked and
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* return should not be waited for.
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*/
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- (BOOL) isOneway;
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/**
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* Number of bytes that the return value occupies on the stack, which is
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* platform(hardware)-dependent.
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*/
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- (NSUInteger) methodReturnLength;
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/**
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* Returns an Objective-C <code>@encode(...)</code> compatible string
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* describing the return type of the method. This may include type
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* qualifiers.
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*/
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- (const char*) methodReturnType;
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/**
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* Returns number of arguments to method, including the implicit
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* <code><em>self</em></code> and <code><em>_cmd</em></code>.
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*/
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- (NSUInteger) numberOfArguments;
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@end
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#if defined(__cplusplus)
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}
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#endif
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#endif /* __NSMethodSignature_h_GNUSTEP_BASE_INCLUDE */
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