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path: root/teensy/dyn_arr.c
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#include "dyn_arr.h"

#include <stdio.h>
#include <assert.h>

void *_ty_list_create(size_t type_size, int init_cap)
{
    init_cap = init_cap < TY_LIST_MIN_CAP
        ? TY_LIST_MIN_CAP
        : init_cap;

    int *arr = (int*)ty_alloc(type_size * init_cap + sizeof(int) * 2);

    arr[0] = 0;
    arr[1] = init_cap;
    return (void*)(arr + 2);
}

void *_ty_list_append_slot(size_t type_size, void **arr)
{
    int *cap = ty_list_cap_ptr(*arr);
    int *len = ty_list_len_ptr(*arr);

    (*len)++;

    if (*len > *cap) {
        *cap *= TY_LIST_GROW_RATE;

        void* base = ty_list_base(*arr);
        base = ty_realloc(base, (type_size * *cap) + sizeof(int) * 2);
        assert(base != NULL); // Just to handle the case
        *arr = (void*)((int*)base + 2);

        len = ty_list_len_ptr(*arr);
    }

    return (char*)*arr + ((*len - 1) * type_size);
}

void ty_list_free(void *arr)
{
    void *base = ty_list_base(arr);
    ty_free(base);
}