wcc/strset.c at master · CompilerProgramming/wcc · GitHub

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#include <stdlib.h>
#include <string.h>

#include "wcc.h"

StrSet *new_strset(void) {
    StrSet *ss = wmalloc(sizeof(StrSet));
    ss->strmap = new_strmap();

    return ss;
}

void free_strset(StrSet *ss) {
    free_strmap(ss->strmap);
    wfree(ss);
}

void strset_add(StrSet *ss, char *element) {
    strmap_put(ss->strmap, element, (void *) 1);
}

int strset_in(StrSet *ss, char *element) {
    return !!strmap_get(ss->strmap, element);
}

StrSet *dup_strset(StrSet *ss) {
    StrSet *result = new_strset();

    for (StrMapIterator it = strmap_iterator(ss->strmap); !strmap_iterator_finished(&it); strmap_iterator_next(&it))
        strmap_put(result->strmap, strmap_iterator_key(&it), (void *) 1);

    return result;
}

StrSet *strset_union(StrSet *ss1, StrSet *ss2) {
    StrSet *result = new_strset();

    for (StrMapIterator it = strmap_iterator(ss1->strmap); !strmap_iterator_finished(&it); strmap_iterator_next(&it))
        strmap_put(result->strmap, strmap_iterator_key(&it), (void *) 1);

    for (StrMapIterator it = strmap_iterator(ss2->strmap); !strmap_iterator_finished(&it); strmap_iterator_next(&it))
        strmap_put(result->strmap, strmap_iterator_key(&it), (void *) 1);

    return result;
}

StrSet *strset_intersection(StrSet *ss1, StrSet *ss2) {
    StrSet *result = new_strset();

    for (StrMapIterator it = strmap_iterator(ss1->strmap); !strmap_iterator_finished(&it); strmap_iterator_next(&it)) {
        char *key = strmap_iterator_key(&it);
        if (strmap_get(ss2->strmap, key)) strmap_put(result->strmap, strmap_iterator_key(&it), (void *) 1);
    }

    return result;
}

void print_strset(StrSet *s) {
    if (!s) {
        printf("{}");
        return;
    }

    int first = 1;
    printf("{");
    for (StrMapIterator it = strmap_iterator(s->strmap); !strmap_iterator_finished(&it); strmap_iterator_next(&it)) {
        char *key = strmap_iterator_key(&it);
        if (!first) { printf(", "); }
        printf("%s", key);
        first = 0;
    }
    printf("}");
}