102 lines
2.2 KiB
C
102 lines
2.2 KiB
C
#include "vector.h"
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Vector vec_new(Destructor destructor)
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{
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Vector self;
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self.length = 0;
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self.capacity = INITIAL_CAPACITY;
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self.offset = sizeof(void *);
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self.elements = (void *)malloc(self.offset * INITIAL_CAPACITY);
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self.destroy = destructor;
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return self;
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}
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Vector vec_with_capacity(Destructor const t_destructor, size_t const t_capacity)
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{
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Vector self = vec_new(t_destructor);
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free(self.elements);
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self.elements = (void **)malloc(self.offset * t_capacity);
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self.capacity = t_capacity;
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return self;
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}
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void *vec_at(Vector const *const self, size_t const t_index)
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{
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return self->elements[t_index];
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}
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void *vec_safe_at(Vector const *const self, size_t const t_index)
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{
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return (t_index >= vec_length(self)) ? NULL : vec_at(self, t_index);
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}
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static void vec_maybe_destroy_element(Vector const *self, size_t const t_index)
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{
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void *element = vec_at(self, t_index);
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if (self->destroy) {
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self->destroy(element);
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}
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}
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void *vec_last(Vector const *const self)
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{
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return vec_at(self, vec_length(self) - 1);
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}
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size_t vec_length(Vector const *const self)
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{
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return self->length;
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}
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size_t vec_capacity(Vector const *const self)
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{
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return self->capacity;
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}
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static void vec_realloc(Vector *const self)
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{
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self->capacity *= 2;
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self->elements = realloc(self->elements, sizeof(void *) * vec_capacity(self));
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if (!self->elements) {
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PDEB("Could not reallocate Vector’s memory, aborting...", NULL);
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exit(ERR_MEM_ALLOC);
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}
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}
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void vec_push(Vector *const self, void const *const t_element)
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{
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if (vec_length(self) >= vec_capacity(self)) {
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vec_realloc(self);
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}
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self->elements[(*self).length++] = t_element;
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}
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void vec_pop(Vector *const self)
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{
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if (vec_length(self) <= 0) {
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return;
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}
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vec_maybe_destroy_element(self, vec_length(self) - 1);
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--(*self).length;
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}
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void vec_shrink_to_fit(Vector *const self)
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{
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self->capacity = self->length;
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self->elements = realloc(self->elements, sizeof(void *) * vec_capacity(self));
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if (!self->elements) {
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PDEB("Could not reallocate Vector’s memory, aborting...", NULL);
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exit(ERR_MEM_ALLOC);
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}
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}
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void vec_delete(Vector *const self)
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{
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if (self->destroy) {
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for (size_t i = 0; i < vec_length(self); ++i) {
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self->destroy(self->elements[i]);
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}
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}
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free(self->elements);
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}
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