defs.h File Reference

#include <stdbool.h>
#include <stddef.h>
#include <stdint.h>

Go to the source code of this file.

Data Structures
struct	wio_closure_t
	WIO closure type. More...

Macros
#define	WIO_TRY(expr)
	WIO error handling marco. More...
#define	WIO_CALLBACK(name)   wio_status_t name(void* data, wio_status_t status, void* result)
	Shorthand for declaring a WIO callback function. More...
#define	WIO_INST_PTR(type)   &((type){})
	Create an anonymous variable on stack and return a pointer to it. More...
#define	WIO_RETURN(ret_var, ret_val)
	Check pointer and return value through pointer. More...
#define	WIO_MIN(x, y)   ((x<y)?x:y)
	Minimum value of two numbers. More...
#define	WIO_MIN3(x, y, z)   WIO_MIN(WIO_MIN(x, y), z)
	Minimum value of three numbers. More...

Typedefs
typedef uint8_t	wio_status_t
	WIO status type. More...
typedef wio_status_t(*	wio_callback_t) (void *, wio_status_t, void *)
	WIO callback type. More...

Variables
static const wio_status_t	WIO_OK = 0x00
	No error. More...
static const wio_status_t	WIO_ERR_OUT_OF_RANGE = 0x01
	Out of range. More...
static const wio_status_t	WIO_ERR_NO_MEMORY = 0x02
	No memory. More...
static const wio_status_t	WIO_ERR_ALREADY = 0x03
	Already in use. More...
static const wio_status_t	WIO_ERR_INVALID = 0x04
	Invalid parameter. More...
static const wio_status_t	WIO_ERR_EMPTY = 0x05
	Empty data structure. More...

Macro Definition Documentation

WIO_CALLBACK

#define WIO_CALLBACK

(

name

)

wio_status_t name(void* data, wio_status_t status, void* result)

Shorthand for declaring a WIO callback function.

WIO_INST_PTR

#define WIO_INST_PTR

(

type

)

&((type){})

Create an anonymous variable on stack and return a pointer to it.

WIO_MIN

#define WIO_MIN	(		x,
			y
	)		((x<y)?x:y)

Minimum value of two numbers.

WIO_MIN3

#define WIO_MIN3	(		x,
			y,
			z
	)		WIO_MIN(WIO_MIN(x, y), z)

Minimum value of three numbers.

WIO_RETURN

#define WIO_RETURN	(		ret_var,
			ret_val
	)

Value:

{ \
        if (ret_var) \
            *ret_var = ret_val; \
    }

Check pointer and return value through pointer.

WIO_TRY

#define WIO_TRY

(

expr

)

Value:

{ \
        wio_status_t __status = expr; \
        if (__status) \
            return __status; \
    }

WIO error handling marco.

The marco continues execution if expression returns WIO_OK, or immediately return from current function is expression returns something else. Its usage is similar to rust's "try!" marco.

Typedef Documentation

wio_callback_t

typedef wio_status_t(* wio_callback_t) (void *, wio_status_t, void *)

WIO callback type.

wio_status_t

typedef uint8_t wio_status_t

WIO status type.

Variable Documentation

WIO_ERR_ALREADY

const wio_status_t WIO_ERR_ALREADY = 0x03

static

Already in use.

WIO_ERR_EMPTY

const wio_status_t WIO_ERR_EMPTY = 0x05

static

Empty data structure.

WIO_ERR_INVALID

const wio_status_t WIO_ERR_INVALID = 0x04

static

Invalid parameter.

WIO_ERR_NO_MEMORY

const wio_status_t WIO_ERR_NO_MEMORY = 0x02

static

No memory.

WIO_ERR_OUT_OF_RANGE

const wio_status_t WIO_ERR_OUT_OF_RANGE = 0x01

static

Out of range.

WIO_OK

const wio_status_t WIO_OK = 0x00

static

No error.