1/* 2** License Applicability. Except to the extent portions of this file are 3** made subject to an alternative license as permitted in the SGI Free 4** Software License B, Version 1.1 (the "License"), the contents of this 5** file are subject only to the provisions of the License. You may not use 6** this file except in compliance with the License. You may obtain a copy 7** of the License at Silicon Graphics, Inc., attn: Legal Services, 1600 8** Amphitheatre Parkway, Mountain View, CA 94043-1351, or at: 9** 10** http://oss.sgi.com/projects/FreeB 11** 12** Note that, as provided in the License, the Software is distributed on an 13** "AS IS" basis, with ALL EXPRESS AND IMPLIED WARRANTIES AND CONDITIONS 14** DISCLAIMED, INCLUDING, WITHOUT LIMITATION, ANY IMPLIED WARRANTIES AND 15** CONDITIONS OF MERCHANTABILITY, SATISFACTORY QUALITY, FITNESS FOR A 16** PARTICULAR PURPOSE, AND NON-INFRINGEMENT. 17** 18** Original Code. The Original Code is: OpenGL Sample Implementation, 19** Version 1.2.1, released January 26, 2000, developed by Silicon Graphics, 20** Inc. The Original Code is Copyright (c) 1991-2000 Silicon Graphics, Inc. 21** Copyright in any portions created by third parties is as indicated 22** elsewhere herein. All Rights Reserved. 23** 24** Additional Notice Provisions: The application programming interfaces 25** established by SGI in conjunction with the Original Code are The 26** OpenGL(R) Graphics System: A Specification (Version 1.2.1), released 27** April 1, 1999; The OpenGL(R) Graphics System Utility Library (Version 28** 1.3), released November 4, 1998; and OpenGL(R) Graphics with the X 29** Window System(R) (Version 1.3), released October 19, 1998. This software 30** was created using the OpenGL(R) version 1.2.1 Sample Implementation 31** published by SGI, but has not been independently verified as being 32** compliant with the OpenGL(R) version 1.2.1 Specification. 33** 34*/ 35/* 36** Author: Eric Veach, July 1994. 37** 38** $Date$ $Revision$ 39** $Header: //depot/main/gfx/lib/glu/libtess/dict.c#5 $ 40*/ 41 42#include <stddef.h> 43#include "dict-list.h" 44#include "memalloc.h" 45 46/* really __gl_dictListNewDict */ 47Dict *dictNewDict( void *frame, 48 int (*leq)(void *frame, DictKey key1, DictKey key2) ) 49{ 50 Dict *dict = (Dict *) memAlloc( sizeof( Dict )); 51 DictNode *head; 52 53 if (dict == NULL) return NULL; 54 55 head = &dict->head; 56 57 head->key = NULL; 58 head->next = head; 59 head->prev = head; 60 61 dict->frame = frame; 62 dict->leq = leq; 63 64 return dict; 65} 66 67/* really __gl_dictListDeleteDict */ 68void dictDeleteDict( Dict *dict ) 69{ 70 DictNode *node; 71 72 for( node = dict->head.next; node != &dict->head; node = node->next ) { 73 memFree( node ); 74 } 75 memFree( dict ); 76} 77 78/* really __gl_dictListInsertBefore */ 79DictNode *dictInsertBefore( Dict *dict, DictNode *node, DictKey key ) 80{ 81 DictNode *newNode; 82 83 do { 84 node = node->prev; 85 } while( node->key != NULL && ! (*dict->leq)(dict->frame, node->key, key)); 86 87 newNode = (DictNode *) memAlloc( sizeof( DictNode )); 88 if (newNode == NULL) return NULL; 89 90 newNode->key = key; 91 newNode->next = node->next; 92 node->next->prev = newNode; 93 newNode->prev = node; 94 node->next = newNode; 95 96 return newNode; 97} 98 99/* really __gl_dictListDelete */ 100void dictDelete( Dict *dict, DictNode *node ) /*ARGSUSED*/ 101{ 102 node->next->prev = node->prev; 103 node->prev->next = node->next; 104 memFree( node ); 105} 106 107/* really __gl_dictListSearch */ 108DictNode *dictSearch( Dict *dict, DictKey key ) 109{ 110 DictNode *node = &dict->head; 111 112 do { 113 node = node->next; 114 } while( node->key != NULL && ! (*dict->leq)(dict->frame, key, node->key)); 115 116 return node; 117} 118