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#ifndef ALGDS_VEC_H_
#define ALGDS_VEC_H_
#include <stdlib.h>
#include "type_alias.h"
#define VECTOR_DEF(T) \
typedef struct { \
T* buffer; \
int size; \
int cap; \
} T##Vector; \
\
void T##Vector_init(T##Vector *self); \
void T##Vector_push_back(T##Vector *self, T *elem); \
void T##Vector_insert_before(T##Vector *self, int n, T *elem); \
void T##Vector_pop(T##Vector *self); \
void T##Vector_remove(T##Vector *self, size_t n); \
size_t T##Vector_len(T##Vector *self); \
T* T##Vector_begin(T##Vector *self); \
T* T##Vector_end(T##Vector *self); \
T* T##Vector_ref(T##Vector *self, size_t n); \
void T##Vector_free(T##Vector *self);
#define VECTOR_IMPL(T) \
void T##Vector_init(T##Vector *self) { \
self->buffer = (T*)malloc(sizeof(T) * 16); \
self->cap = 16; \
self->size = 0; \
} \
\
void T##Vector_push_back(T##Vector *self, T *elem) { \
if (self->size + 1 > self->cap) { \
self->buffer = realloc(self->buffer, sizeof(T) * self->cap * 2); \
self->cap *= 2; \
} \
memmove(self->buffer + self->size, elem, sizeof(T)); \
self->size += 1; \
} \
void T##Vector_insert_before(T##Vector *self, int n, T *elem) { \
if (n < 0 || n > self->size) { \
return; \
} \
if (self->size + 1 > self->cap) { \
self->buffer = malloc(sizeof(T) * self->cap * 2); \
self->cap *= 2; \
} \
if (n != self->size) { \
memmove(self->buffer + n + 1, \
self->buffer + n, \
sizeof(T) * (self->size - n)); \
memmove(self->buffer + n, elem, sizeof(T)); \
} \
} \
void T##Vector_pop(T##Vector *self) { \
self->size -= 1; \
} \
void T##Vector_remove(T##Vector *self, size_t n) { \
if (n < 0 || n >= self->size) return; \
memmove(self->buffer + n, \
self->buffer + n + 1, \
sizeof(T) * self->size - n - 1); \
self->size -= 1; \
} \
T* T##Vector_begin(T##Vector *self) { return self->buffer; } \
T* T##Vector_end(T##Vector *self) { return self->buffer + self->size; } \
T* T##Vector_ref(T##Vector *self, size_t n) { return self->buffer + n; } \
void T##Vector_free(T##Vector *self) { free(self->buffer); }
VECTOR_DEF(Char);
VECTOR_DEF(Int);
VECTOR_DEF(Long);
VECTOR_DEF(Float);
VECTOR_DEF(Double);
#endif
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