iter.h

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#pragma once
 
 
#include <stdlib.h>
#include <stdbool.h>
#include <string.h>
#include <inttypes.h>
 
typedef struct HAC_ITER_ft HAC_ITER_ft;
struct HAC_ITER_ft{
    bool (*beginl)(void *self, HAC_ITER_ft*, void *ctr);
    bool (*endl)(void *self, HAC_ITER_ft*, void *ctr);
    bool (*beginr)(void *self, HAC_ITER_ft*, void *ctr);
    bool (*endr)(void *self, HAC_ITER_ft*, void *ctr);
    uint64_t (*position)(void *self, HAC_ITER_ft*);
    void *(*next)(void *self, HAC_ITER_ft*);
    void *(*prev)(void *self, HAC_ITER_ft*);
    void *(*step)(void *self, HAC_ITER_ft*, int64_t n);
    void *(*get)(void *self, HAC_ITER_ft*);
    void *(*get_offset)(void *self, HAC_ITER_ft*, int64_t n);
    bool (*set)(void *self, HAC_ITER_ft*, void *val);
    bool (*set_offset)(void *self, HAC_ITER_ft*, int64_t n, void *val);
    bool (*insert)(void *self, HAC_ITER_ft, void *val);
    bool (*insert_offset)(void *self, HAC_ITER_ft, int64_t n, void *val);
    void *(*remove)(void *self, HAC_ITER_ft*);
    void *(*remove_offset)(void *self, HAC_ITER_ft*, int64_t n);
    void *(*split)(void *self, HAC_ITER_ft*);
    void *(*split_offset)(void *self, HAC_ITER_ft*, int64_t n);
    bool (*copy)(void *self, HAC_ITER_ft*, void *other);
    uint64_t traits;
    void *data;
};
 
typedef enum{
    HAC_ITER_INPUT = 1ull << 0,
    HAC_ITER_OUTPUT = 1ull << 1,
    HAC_ITER_INSERT = 1ull << 2,
    HAC_ITER_REMOVE = 1ull << 3,
    HAC_ITER_SPLIT = 1ull << 4,
    HAC_ITER_FORWARD = 1ull << 5,
    HAC_ITER_REVERSE = 1ull << 6,
    HAC_ITER_POSITION = 1ull << 7,
    HAC_ITER_STEP = 1ull << 8,
    HAC_ITER_OFFSET = 1ull << 9,
    HAC_ITER_COPY = 1ull << 10
} HAC_ITER_TRAITS;