#ifndef __SPL_INTRIN_H__
#define __SPL_INTRIN_H__

#include "../stage0/include/utils.h"
#include "spl_lang_type.h"

typedef enum {
    SPL_INTRIN_NONE = 0,
    SPL_INTRIN_BITSIZEOF,
    SPL_INTRIN_SIZEOF,
    SPL_INTRIN_ALIGNOF,
    SPL_INTRIN_ASSERT,
    SPL_INTRIN_BREAKPOINT,
    SPL_INTRIN_LEN,
    SPL_INTRIN_INT_CAST,
    SPL_INTRIN_TRUNCATE,
    SPL_INTRIN_BIT_CAST,
    SPL_INTRIN_FLOAT_CAST,
    SPL_INTRIN_FLOAT2INT,
    SPL_INTRIN_INT2FLOAT,
    SPL_INTRIN_BOOL2INT,
    SPL_INTRIN_PTR2INT,
    SPL_INTRIN_INT2PTR,
    SPL_INTRIN_PTR_CAST,
    SPL_INTRIN_ENUM2INT,
    SPL_INTRIN_OFFSETOF,
    SPL_INTRIN_FIELD_COUNT,
} spl_intrin_t;

typedef enum {
    SPL_INTRIN_FORM_CALL = 1,  /* @sizeof(...)  @assert(...) */
    SPL_INTRIN_FORM_FIELD = 2, /* recv.len                   */
} spl_intrin_form_t;

typedef enum {
    SPL_INTRIN_RESULT_UNIT,
    SPL_INTRIN_RESULT_BOOL,
    SPL_INTRIN_RESULT_USIZE,
} spl_intrin_result_t;

typedef struct {
    const char *name;
    spl_intrin_t kind;
    spl_intrin_form_t form;
    int min_args; /* FIELD 形态忽略 */
    int max_args; /* -1 = variadic  */
    spl_intrin_result_t result;
} spl_intrin_info_t;

spl_intrin_t spl_intrin_lookup_call(const char *name);
spl_intrin_t spl_intrin_lookup_field(spl_lang_type_kind_t recv_kind, const char *field);
spl_intrin_t spl_intrin_lookup_cast(spl_type_t *type, spl_type_id_t ft, spl_type_id_t tt);

const spl_intrin_info_t *spl_intrin_info(spl_intrin_t kind);

/* ---- 与 IR 侧共享的类型布局约定 ---- */
#define SPL_SLICE_PTR_FIELD_IDX 0
#define SPL_SLICE_LEN_FIELD_IDX 1

#endif /* __SPL_INTRIN_H__ */