59 lines
993 B
C
59 lines
993 B
C
#include "priv.h"
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#include <stdlib.h>
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struct Array {
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size_t n;
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size_t cap;
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VALUE* items;
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};
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Array* array_new(void)
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{
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Array* a = xcalloc(1, sizeof(Array));
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a->n = 0;
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a->cap = 1;
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a->items = xmalloc(1 * sizeof(Array));
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a->items[0] = create_value_nil();
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return a;
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}
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void array_destroy(Array* a)
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{
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free(a->items);
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free(a);
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}
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size_t array_len(Array const* a)
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{
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return a->n;
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}
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VALUE array_get(Array const* a, size_t pos)
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{
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if (pos >= a->n)
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return create_value_nil();
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return a->items[pos];
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}
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void array_set(Array* a, size_t pos, VALUE v)
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{
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// extend array
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if (pos > a->cap - 1) {
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a->cap *= 2;
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a->items = xrealloc(a->items, a->cap * sizeof(VALUE));
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for (size_t i = a->n; i < a->cap; ++i)
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a->items[i] = create_value_nil();
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}
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// set item
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a->items[pos] = v;
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if (pos + 1 > a->n)
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a->n = pos + 1;
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}
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void array_append(Array* a, VALUE v)
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{
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array_set(a, a->n, v);
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}
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