number.h

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#ifndef NUMBER
#define NUMBER
 
#include <limits.h>
 
typedef enum
{
    NT_INT1,
    NT_INT8,
    NT_INT16,
    NT_INT32,
    NT_INT64,
} NumberType;
 
static const int numberTypeByteSizes[] = {
    1, 1, 2, 4, 8,
};
 
static const int numberTypeBitSizes[] = {1, 8, 16, 32, 64};
 
static const unsigned long long int numberTypeMaxValues[] = {1, CHAR_MAX, SHRT_MAX, INT_MAX,
                                                             LONG_MAX};
 
static const char* numberTypeNames[] = {"bool", "char", "short", "int", "long"};
 
static const char* numberTypeFormatStrings[] = {"%d", "%d", "%d", "%d", "%ld"};
 
typedef struct Number {
    NumberType number_type;
    long long int value;
    int pointer_depth;
} Number;
 
#define NUMBER_BOOL(v)                                                                             \
    (Number)                                                                                       \
    {                                                                                              \
        .number_type = NT_INT1, .value = v                                                         \
    }
 
#define NUMBER_CHAR(v)                                                                             \
    (Number)                                                                                       \
    {                                                                                              \
        .number_type = NT_INT8, .value = v                                                         \
    }
 
#define NUMBER_SHORT(v)                                                                            \
    (Number)                                                                                       \
    {                                                                                              \
        .number_type = NT_INT16, .value = v                                                        \
    }
 
#define NUMBER_INT(v)                                                                              \
    (Number)                                                                                       \
    {                                                                                              \
        .number_type = NT_INT32, .value = v                                                        \
    }
 
#define NUMBER_LONG(v)                                                                             \
    (Number)                                                                                       \
    {                                                                                              \
        .number_type = NT_INT64, .value = v                                                        \
    }
 
#define NUMBER_FROM_TYPE_VAL(t, v)                                                                 \
    (Number)                                                                                       \
    {                                                                                              \
        .number_type = t, .value = v                                                               \
    }
 
#define NUMBERS_TYPEQUIV(A, B)                                                                     \
    (A.number_type == B.number_type && A.pointer_depth == B.pointer_depth)
 
NumberType token_type_to_number_type(int token_type);
int number_to_token_type(Number number);
NumberType max_numbertype_for_val(long long int value);
 
#endif /* NUMBER */