tools/MetaMake/list.h

   1 #ifndef __MMAKE_LIST_H
   2 #define __MMAKE_LIST_H
   3
   4 /* MetaMake - A Make extension
   5    Copyright © 1995-2004, The AROS Development Team. All rights reserved.
   6
   7 This file is part of MetaMake.
   8
   9 MetaMake is free software; you can redistribute it and/or modify
  10 it under the terms of the GNU General Public License as published by
  11 the Free Software Foundation; either version 2, or (at your option)
  12 any later version.
  13
  14 MetaMake is distributed in the hope that it will be useful,
  15 but WITHOUT ANY WARRANTY; without even the implied warranty of
  16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17 GNU General Public License for more details.
  18
  19 You should have received a copy of the GNU General Public License
  20 along with GNU CC; see the file COPYING.  If not, write to
  21 the Free Software Foundation, 59 Temple Place - Suite 330,
  22 Boston, MA 02111-1307, USA.  */
  23
  24 #include <stddef.h>
  25
  26 /* This file specifies the API for the list functions */
  27
  28 #include "compiler.h"
  29
  30 /* Types */
  31 struct Node __mayalias;
  32 struct Node
  33 {
  34     struct Node * next,
  35                 * prev;
  36     char        * name;
  37 };
  38
  39 #ifndef __GNUC__
  40 struct List
  41 {
  42     struct Node * first,
  43                 * last,
  44                 * prelast;
  45 };
  46 #else
  47 struct List __mayalias;
  48 struct List
  49 {
  50     union
  51     {
  52         struct Node * first;
  53         struct Node ** _first;
  54     };
  55     struct Node * last;
  56     union
  57     {
  58         struct Node * prelast;
  59         struct List * _prelast;
  60     };
  61 };
  62 #endif
  63
  64 /* inline functions and macros */
  65 static inline void __NewList(struct List *l)
  66 {
  67 #ifndef __GNUC__
  68     l->prelast = (struct Node *)l;
  69     l->_first = (struct Node *)&l->last;
  70 #else
  71     l->_prelast = l;
  72     l->_first = &l->last;
  73 #endif
  74     l->last = 0;
  75 }
  76 #define NewList(l) __NewList((struct List *)l)
  77
  78 static inline void __AddHead(struct List *l, struct Node *n)
  79 {
  80     n->next        = l->first;
  81     n->prev        = (struct Node *)&l->first;
  82     l->first->prev = n;
  83     l->first       = n;
  84 }
  85 #define AddHead(l,n) __AddHead((struct List *)l, (struct Node *)n)
  86
  87 static inline void __AddTail(struct List *l, struct Node *n)
  88 {
  89     n->next          = (struct Node *)&l->last;
  90     n->prev          = l->prelast;
  91     l->prelast->next = n;
  92     l->prelast       = n;
  93 }
  94 #define AddTail(l,n) __AddTail((struct List *)l, (struct Node *)n)
  95
  96 static inline void __Remove(struct Node *n)
  97 {
  98     n->prev->next = n->next;
  99     n->next->prev = n->prev;
 100 }
 101 #define Remove(n) __Remove((struct Node *)n)
 102
 103 #   define GetHead(l)       (void *)(((struct List *)l)->first->next \
 104                                 ? ((struct List *)l)->first \
 105                                 : (struct Node *)0)
 106 #   define GetTail(l)       (void *)(((struct List *)l)->prelast->prev \
 107                                 ? ((struct List *)l)->prelast \
 108                                 : (struct Node *)0)
 109 #   define GetNext(n)       (void *)(((struct Node *)n)->next->next \
 110                                 ? ((struct Node *)n)->next \
 111                                 : (struct Node *)0)
 112 #   define GetPrev(n)       (void *)(((struct Node *)n)->prev->prev \
 113                                 ? ((struct Node *)n)->prev \
 114                                 : (struct Node *)0)
 115 #   define ForeachNode(l,n) \
 116         for (n=(void *)(((struct List *)(l))->first); \
 117             ((struct Node *)(n))->next; \
 118             n=(void *)(((struct Node *)(n))->next))
 119 #   define ForeachNodeSafe(l,node,nextnode) \
 120         for (node=(void *)(((struct List *)(l))->first); \
 121             ((nextnode)=(void*)((struct Node *)(node))->next); \
 122             (node)=(void *)(nextnode))
 123
 124 /* Functions */
 125 void AssignList (struct List * dest, struct List * src); /* After assignment only dest may be used !!! */
 126 void *FindNode (const struct List * l, const char * name);
 127 void printlist (struct List * l);
 128 void freelist (struct List * l);
 129 struct Node *newnode (const char * name);
 130 void *newnodesize (const char * name, size_t size);
 131 struct Node *addnodeonce (struct List * l, const char * name);
 132 void *addnodeoncesize (struct List * l, const char * name, size_t size);
 133
 134 #endif /* __MMAKE_LIST_H */