ADTast-experimentalenumpthread-emulationqualifiedEnum
Last change
on this file since 4b3b352 was
f4e3419d,
checked in by Peter A. Buhr <pabuhr@…>, 7 years ago
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restructure paper documents
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-
Property mode set to
100644
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File size:
1.1 KB
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1 | #include <stdlib.h> |
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2 | #include "c-stack.h" |
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3 | |
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4 | struct stack_node { |
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5 | void* value; |
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6 | struct stack_node* next; |
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7 | }; |
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8 | |
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9 | struct stack new_stack() { return (struct stack){ NULL }; /***/ } |
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10 | |
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11 | void copy_stack(struct stack* s, const struct stack* t, void* (*copy)(const void*)) { |
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12 | struct stack_node** crnt = &s->head; |
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13 | for ( struct stack_node* next = t->head; next; next = next->next ) { |
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14 | *crnt = malloc(sizeof(struct stack_node)); /***/ |
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15 | **crnt = (struct stack_node){ copy(next->value) }; /***/ |
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16 | crnt = &(*crnt)->next; |
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17 | } |
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18 | *crnt = 0; |
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19 | } |
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20 | |
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21 | void clear_stack(struct stack* s, void (*free_el)(void*)) { |
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22 | for ( struct stack_node* next = s->head; next; ) { |
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23 | struct stack_node* crnt = next; |
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24 | next = crnt->next; |
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25 | free_el(crnt->value); |
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26 | free(crnt); |
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27 | } |
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28 | s->head = NULL; |
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29 | } |
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30 | |
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31 | _Bool stack_empty(const struct stack* s) { return s->head == NULL; } |
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32 | |
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33 | void push_stack(struct stack* s, void* value) { |
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34 | struct stack_node* n = malloc(sizeof(struct stack_node)); /***/ |
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35 | *n = (struct stack_node){ value, s->head }; /***/ |
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36 | s->head = n; |
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37 | } |
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38 | |
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39 | void* pop_stack(struct stack* s) { |
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40 | struct stack_node* n = s->head; |
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41 | s->head = n->next; |
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42 | void* x = n->value; |
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43 | free(n); |
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44 | return x; |
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45 | } |
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