ADTast-experimentalenumforall-pointer-decayjacob/cs343-translationnew-ast-unique-exprpthread-emulationqualifiedEnum
Last change
on this file since a4d098c was
4c80a75,
checked in by Peter A. Buhr <pabuhr@…>, 7 years ago
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update evaluation programs
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-
Property mode set to
100644
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File size:
1.2 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 | typedef struct node { |
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5 | void * value; |
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6 | struct node * next; |
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7 | } node; |
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8 | |
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9 | void copy_stack( stack * s, const stack * t, void * (*copy)( const void * ) ) { |
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10 | node ** cr = &s->head; |
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11 | for ( node * nx = t->head; nx; nx = nx->next ) { |
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12 | *cr = malloc( sizeof(node) ); /***/ |
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13 | (*cr)->value = copy( nx->value ); |
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14 | cr = &(*cr)->next; |
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15 | } |
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16 | *cr = NULL; |
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17 | } |
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18 | |
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19 | void clear_stack( stack * s, void (* free_el)( void * ) ) { |
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20 | for ( node * nx = s->head; nx; ) { |
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21 | node * cr = nx; |
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22 | nx = cr->next; |
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23 | free_el( cr->value ); |
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24 | free( cr ); |
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25 | } |
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26 | s->head = NULL; |
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27 | } |
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28 | |
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29 | stack new_stack() { |
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30 | return (stack){ NULL }; /***/ |
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31 | } |
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32 | |
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33 | stack * assign_stack( stack * s, const stack * t, |
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34 | void * (*copy_el)( const void * ), void (*free_el)( void * ) ) { |
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35 | if ( s->head == t->head ) return s; |
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36 | clear_stack( s, free_el ); /***/ |
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37 | copy_stack( s, t, copy_el ); /***/ |
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38 | return s; |
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39 | } |
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40 | |
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41 | _Bool stack_empty( const stack * s ) { |
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42 | return s->head == NULL; |
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43 | } |
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44 | |
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45 | void push_stack( stack * s, void * v ) { |
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46 | node * n = malloc( sizeof(node) ); /***/ |
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47 | *n = (node){ v, s->head }; /***/ |
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48 | s->head = n; |
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49 | } |
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50 | |
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51 | void * pop_stack( stack * s ) { |
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52 | node * n = s->head; |
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53 | s->head = n->next; |
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54 | void * v = n->value; |
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55 | free( n ); |
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56 | return v; |
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57 | } |
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