number.h File Reference

Definitions and function headers for the internal "Number" type. More...

#include <limits.h>

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Classes
struct	Number
	Container for various kinds of number data. More...

Macros
#define	NUMBER_BOOL(v)
	Generates a Number struct with type INT1. More...
#define	NUMBER_CHAR(v)
	Generates a Number struct with type INT8. More...
#define	NUMBER_SHORT(v)
	Generates a Number struct with type INT16. More...
#define	NUMBER_INT(v)
	Generates a Number struct with type INT32. More...
#define	NUMBER_LONG(v)
	Generates a Number struct with type INT64. More...
#define	NUMBER_FROM_TYPE_VAL(t, v)
	Generates a Number struct given a NumberType and a value. More...
#define	NUMBERS_TYPEQUIV(A, B)    (A.number_type == B.number_type && A.pointer_depth == B.pointer_depth)
	Determines if two Number structs have equivalent types. More...

Typedefs
typedef struct Number	Number
	Container for various kinds of number data. More...

Enumerations
enum	NumberType {   NT_INT1 , NT_INT8 , NT_INT16 , NT_INT32 ,   NT_INT64 }
	Types of numbers supported by Purple. More...

Functions
NumberType	token_type_to_number_type (int token_type)
	Convert a TokenType to a NumberType. More...
int	number_to_token_type (Number number)
NumberType	max_numbertype_for_val (long long int value)
	Finds the maximum NumberType possible for a given value. More...

Variables
static const int	numberTypeByteSizes []
	Size of each NumberType. More...
static const int	numberTypeBitSizes [] = {1, 8, 16, 32, 64}
	Bit size of each NumberType. More...
static const unsigned long long int	numberTypeMaxValues []
	Max value of each NumberType. More...
static const char *	numberTypeNames [] = {"bool", "char", "short", "int", "long"}
	Names of each NumberType. More...
static const char *	numberTypeFormatStrings [] = {"%d", "%d", "%d", "%d", "%ld"}
	Format strings for each data type. More...

Detailed Description

Definitions and function headers for the internal "Number" type.

Author

Charles Averill

Date

12-Sep-2022

Macro Definition Documentation

NUMBER_BOOL

#define NUMBER_BOOL

(

v

)

Value:

    (Number)                                                                                       \
    {                                                                                              \
        .number_type = NT_INT1, .value = v                                                         \
    }

Generates a Number struct with type INT1.

NUMBER_CHAR

#define NUMBER_CHAR

(

v

)

Value:

    (Number)                                                                                       \
    {                                                                                              \
        .number_type = NT_INT8, .value = v                                                         \
    }

Generates a Number struct with type INT8.

NUMBER_FROM_TYPE_VAL

#define NUMBER_FROM_TYPE_VAL	(		t,
			v
	)

Value:

    (Number)                                                                                       \
    {                                                                                              \
        .number_type = t, .value = v                                                               \
    }

Generates a Number struct given a NumberType and a value.

NUMBER_INT

#define NUMBER_INT

(

v

)

Value:

    (Number)                                                                                       \
    {                                                                                              \
        .number_type = NT_INT32, .value = v                                                        \
    }

Generates a Number struct with type INT32.

NUMBER_LONG

#define NUMBER_LONG

(

v

)

Value:

    (Number)                                                                                       \
    {                                                                                              \
        .number_type = NT_INT64, .value = v                                                        \
    }

Generates a Number struct with type INT64.

NUMBER_SHORT

#define NUMBER_SHORT

(

v

)

Value:

    (Number)                                                                                       \
    {                                                                                              \
        .number_type = NT_INT16, .value = v                                                        \
    }

Generates a Number struct with type INT16.

NUMBERS_TYPEQUIV

#define NUMBERS_TYPEQUIV	(		A,
			B
	)		(A.number_type == B.number_type && A.pointer_depth == B.pointer_depth)

Determines if two Number structs have equivalent types.

Typedef Documentation

Number

typedef struct Number Number

Container for various kinds of number data.

Enumeration Type Documentation

NumberType

enum NumberType

Types of numbers supported by Purple.

Enumerator
NT_INT1
NT_INT8
NT_INT16
NT_INT32
NT_INT64

Function Documentation

max_numbertype_for_val()

NumberType max_numbertype_for_val

(

long long int

value

)

Finds the maximum NumberType possible for a given value.

Parameters

value

Value to check

Returns

NumberType Corresponding NumberType, or -1 if none was found

number_to_token_type()

int number_to_token_type

(

Number

number

)

token_type_to_number_type()

NumberType token_type_to_number_type

(

int

token_type

)

Convert a TokenType to a NumberType.

Parameters

token_type

TokenType to convert

Returns

NumberType Converted TokenType

Variable Documentation

numberTypeBitSizes

const int numberTypeBitSizes[] = {1, 8, 16, 32, 64}

static

Bit size of each NumberType.

numberTypeByteSizes

const int numberTypeByteSizes[]

static

Initial value:

= {
    1, 1, 2, 4, 8,
}

Size of each NumberType.

numberTypeFormatStrings

const char* numberTypeFormatStrings[] = {"%d", "%d", "%d", "%d", "%ld"}

static

Format strings for each data type.

numberTypeMaxValues

const unsigned long long int numberTypeMaxValues[]

static

Initial value:

= {1, CHAR_MAX, SHRT_MAX, INT_MAX,
                                                             LONG_MAX}

Max value of each NumberType.

numberTypeNames

const char* numberTypeNames[] = {"bool", "char", "short", "int", "long"}

static

Names of each NumberType.