116 lines
2.9 KiB
C
116 lines
2.9 KiB
C
#include "cig.h"
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#include <stdio.h>
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void *dyn_array_create_func(dyn_array_create_func_args_t args) {
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dyn_array_header_t *header = allocator_alloc_func(
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args.allocator,
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sizeof(dyn_array_header_t) + args.itemsize * args.initial_capacity,
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args.file,
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args.line
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);
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header->n_items = 0;
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header->capacity = args.initial_capacity;
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header->itemsize = args.itemsize;
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header->allocator = args.allocator;
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return &header->bytes;
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}
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void *dyn_array_grow_func(void *this, size_t n_new_items, const char *file, int line) {
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dyn_array_header_t *header = PTR_FROM_FIELD_PTR(dyn_array_header_t, bytes, this);
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size_t new_size = header->n_items + n_new_items;
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if (header->capacity < new_size) {
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size_t cap_times_2 = header->capacity * 2;
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size_t new_capacity =
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cap_times_2 < new_size
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? new_size
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: cap_times_2;
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header = allocator_resize_func(
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header->allocator,
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header,
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sizeof(dyn_array_header_t) + header->itemsize * new_capacity,
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file,
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line
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);
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header->capacity = new_capacity;
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}
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header->n_items = new_size;
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return &header->bytes;
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}
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void dyn_array_shrink_func(void *this, size_t n_items_to_remove, const char *file, int line) {
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if (arr_len(this) < n_items_to_remove) {
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fprintf(
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stderr,
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"%s:%d: tried to remove more items than contained in dynamic array.\n",
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file,
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line
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);
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exit(1);
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}
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dyn_array_header_t *header = PTR_FROM_FIELD_PTR(dyn_array_header_t, bytes, this);
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header->n_items -= n_items_to_remove;
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}
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size_t arr_len(void *this) {
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if (this == NULL) { return 0; }
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dyn_array_header_t *header = PTR_FROM_FIELD_PTR(dyn_array_header_t, bytes, this);
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return header->n_items;
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}
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size_t arr_cap(void *this) {
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if (this == NULL) { return 0; }
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dyn_array_header_t *header = PTR_FROM_FIELD_PTR(dyn_array_header_t, bytes, this);
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return header->capacity;
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}
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bool dyn_array_contains_func(void *this, uint8_t *value) {
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dyn_array_header_t *header = PTR_FROM_FIELD_PTR(dyn_array_header_t, bytes, this);
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for (size_t i = 0; i < header->n_items; i++) {
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bool is_equal = true;
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for (size_t off = 0; off < header->itemsize; off++) {
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if (header->bytes[i*header->itemsize+off] != value[off]) {
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is_equal = false;
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break;
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}
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}
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if (is_equal) {
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return true;
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}
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}
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return false;
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}
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bool dyn_array_contains_cmp_func(void *this, uint8_t *value, dyn_array_eq_fn eq) {
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dyn_array_header_t *header = PTR_FROM_FIELD_PTR(dyn_array_header_t, bytes, this);
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size_t itemsize = header->itemsize;
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for (size_t i = 0; i < header->n_items; i++) {
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void *element = &header->bytes[i * itemsize];
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if (eq(element, value)) {
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return true;
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}
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}
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return false;
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}
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void dyn_array_bounds_check_func(void *this, size_t index, const char *file, int line, bool print_error) {
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size_t len = arr_len(this);
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if ((index >= len)) {
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if (print_error) {
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fprintf(
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stderr,
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"%s:%d: array index %zu out of bounds (length is %zu)\n",
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file,
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line,
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index,
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len
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);
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}
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exit(1);
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}
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}
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