ccore/include/core/ToString.h

#ifndef CORE_TO_STRING_H
#define CORE_TO_STRING_H

#include "core/Check.h"
#include "core/Types.h"

check_format(3, 4) size_t
    coreToString(char* buffer, size_t n, const char* format, ...);
size_t coreToStringSize(const void* p, char* buffer, size_t n);
size_t coreToStringInt(const void* p, char* buffer, size_t n);
void coreStringAdd(size_t* w, char** buffer, size_t* n, size_t shift);

#define CORE_STRUCT_TO_STRING(type)                                            \
    struct Core##type##T;                                                      \
    size_t coreToString##type(const struct Core##type##T* a, char* buffer,     \
                              size_t n);

CORE_STRUCT_TO_STRING(BitArray)
CORE_STRUCT_TO_STRING(Box)

#ifdef IMPORT_CORE
#define toStringSize coreToStringSize
#define toStringInt coreToStringInt
#define stringAdd coreStringAdd
#define toStringBitArray coreToStringBitArray
#define toStringBox coreToStringBox

// clang-format off
#define CORE_PAIR(a, b) a: b
// clang-format on
#define CORE_STRUCT_PAIR(name)                                                 \
    CORE_PAIR(const struct Core##name##T*, toString##name),                    \
        CORE_PAIR(struct Core##name##T*, toString##name)

#define toString(t, ...)                                                       \
    _Generic((t),                                                              \
        char*: coreToString,                                                   \
        CORE_STRUCT_PAIR(BitArray),                                            \
        CORE_STRUCT_PAIR(Box))(t, __VA_ARGS__)
#endif

#endif