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annotate lwlib/lw_stack.h @ 25:87590f43e76d

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Started lwbasic parser; checkpoint
author lost@l-w.ca
date Mon, 24 Jan 2011 20:08:09 -0700
parents 2c24602be78f
children 00ddfdc1e1e3
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1 /*
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2 lw_stack.h
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3
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4 Copyright © 2010 William Astle
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5
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6 This file is part of LWTOOLS.
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7
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8 LWTOOLS is free software: you can redistribute it and/or modify it under the
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9 terms of the GNU General Public License as published by the Free Software
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10 Foundation, either version 3 of the License, or (at your option) any later
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11 version.
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12
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13 This program is distributed in the hope that it will be useful, but WITHOUT
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14 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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16 more details.
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17
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18 You should have received a copy of the GNU General Public License along with
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19 this program. If not, see <http://www.gnu.org/licenses/>.
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20 */
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21
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22 #ifndef ___lw_stack_h_seen___
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23 #define ___lw_stack_h_seen___
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26 #ifdef ___lw_stack_c_seen___
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28 struct lw_stack_node_priv
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29 {
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30 void *data;
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31 struct lw_stack_node_priv *next;
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32 };
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33
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34 struct lw_stack_priv
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35 {
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36 struct lw_stack_node_priv *head;
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37 void (*freefn)(void *d);
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38 };
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39
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40 typedef struct lw_stack_priv * lw_stack_t;
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41
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42 #else /* def ___lw_stack_c_seen___ */
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43
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44 typedef void * lw_stack_t;
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45 extern lw_stack_t lw_stack_create(void (*freefn)(void *d));
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46 extern void lw_stack_destroy(lw_stack_t S);
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47 extern void *lw_stack_top(lw_stack_t S);
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48 extern void *lw_stack_pop(lw_stack_t S);
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49 extern void lw_stack_push(lw_stack_t S, void *item);
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51 #endif /* def ___lw_stack_c_seen___ */
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52
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53 #endif /* ___lw_stack_h_seen___ */