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#include "stack.h" |
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#include "buffer.h" |
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#include |
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#include |
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#include |
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9
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void |
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hoedown_stack_init(hoedown_stack *st, size_t initial_size) |
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{ |
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50
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assert(st); |
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14
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st->item = NULL; |
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st->size = st->asize = 0; |
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14
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50
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if (!initial_size) |
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initial_size = 8; |
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hoedown_stack_grow(st, initial_size); |
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} |
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void |
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0
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hoedown_stack_uninit(hoedown_stack *st) |
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{ |
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0
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0
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assert(st); |
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27
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28
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0
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free(st->item); |
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0
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} |
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31
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void |
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hoedown_stack_grow(hoedown_stack *st, size_t neosz) |
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{ |
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50
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assert(st); |
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36
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14
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50
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if (st->asize >= neosz) |
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return; |
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st->item = hoedown_realloc(st->item, neosz * sizeof(void *)); |
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memset(st->item + st->asize, 0x0, (neosz - st->asize) * sizeof(void *)); |
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st->asize = neosz; |
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44
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14
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50
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if (st->size > neosz) |
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0
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st->size = neosz; |
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} |
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48
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void |
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12
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hoedown_stack_push(hoedown_stack *st, void *item) |
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50
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{ |
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12
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50
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assert(st); |
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52
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53
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12
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50
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if (st->size >= st->asize) |
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0
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hoedown_stack_grow(st, st->size * 2); |
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56
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12
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st->item[st->size++] = item; |
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57
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12
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} |
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58
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59
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void * |
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60
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0
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hoedown_stack_pop(hoedown_stack *st) |
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61
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{ |
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0
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0
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assert(st); |
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63
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64
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0
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0
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if (!st->size) |
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65
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return NULL; |
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66
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67
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0
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return st->item[--st->size]; |
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68
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} |
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69
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70
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void * |
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71
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0
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hoedown_stack_top(const hoedown_stack *st) |
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72
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{ |
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73
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0
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0
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assert(st); |
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74
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75
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0
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0
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if (!st->size) |
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76
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return NULL; |
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77
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78
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0
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return st->item[st->size - 1]; |
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79
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} |