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Annotation of objc/NXConstantString.m, revision 1.1

1.1     ! root        1: /*
        !             2:  * Copyright (c) 1999 Apple Computer, Inc. All rights reserved.
        !             3:  *
        !             4:  * @APPLE_LICENSE_HEADER_START@
        !             5:  * 
        !             6:  * "Portions Copyright (c) 1999 Apple Computer, Inc.  All Rights
        !             7:  * Reserved.  This file contains Original Code and/or Modifications of
        !             8:  * Original Code as defined in and that are subject to the Apple Public
        !             9:  * Source License Version 1.0 (the 'License').  You may not use this file
        !            10:  * except in compliance with the License.  Please obtain a copy of the
        !            11:  * License at http://www.apple.com/publicsource and read it before using
        !            12:  * this file.
        !            13:  * 
        !            14:  * The Original Code and all software distributed under the License are
        !            15:  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
        !            16:  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
        !            17:  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
        !            18:  * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
        !            19:  * License for the specific language governing rights and limitations
        !            20:  * under the License."
        !            21:  * 
        !            22:  * @APPLE_LICENSE_HEADER_END@
        !            23:  */
        !            24: /*
        !            25:        NXConstantString.m
        !            26:        Copyright 1991, NeXT, Inc.
        !            27:        Responsibility:
        !            28: */
        !            29: 
        !            30: #ifndef KERNEL
        !            31: #ifdef SHLIB
        !            32: #import "shlib.h"
        !            33: #endif SHLIB
        !            34: 
        !            35: #import "NXStringPrivate.h"
        !            36: 
        !            37: @implementation NXConstantString
        !            38: 
        !            39: // We allow allocFromZone:, since this what typedstreams will use when
        !            40: // unarchiving.  However, we make the designated initializer raise.
        !            41: 
        !            42: - initFromCharactersNoCopy:(unichar *)chars length:(unsigned)len
        !            43: {
        !            44:     return [self doesNotRecognize:_cmd];
        !            45: }
        !            46: 
        !            47: // Simply returns self, since NXConstantString's cannot be freed.
        !            48: // Beware that NXConstantString's will disappear when dynamically loaded
        !            49: // code is unloaded!
        !            50: 
        !            51: - copyFromZone:(NXZone *)zone
        !            52: {
        !            53:     return self;
        !            54: }
        !            55: 
        !            56: // Ignore free messages
        !            57: 
        !            58: - free
        !            59: {
        !            60:     return nil;
        !            61: }
        !            62: 
        !            63: - _reallyFree
        !            64: {
        !            65:     return [super free];
        !            66: }
        !            67: 
        !            68: // When unarchiving, replace ourselves with an NXReadOnlyString.
        !            69: 
        !            70: // Ugh.  We would rather write out an NXReadOnlyString in the first place,
        !            71: // but because of how typedstreams work this won't work at all.
        !            72: // By the time we recieve the write method, our class name has already
        !            73: // been written out.  That code should be moved to [Object write]
        !            74: // so that it only happens when [super write] is called (mself - 10/8/91).
        !            75: 
        !            76: - finishUnarchiving
        !            77: {
        !            78:     NXString *newString = [NXReadOnlyString alloc] ;
        !            79:     
        !            80:     [newString initFromCharacters:characters length:_length];
        !            81:     [self _reallyFree];
        !            82:     return newString;
        !            83: }
        !            84: 
        !            85: @end
        !            86: #endif

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