Implicit Parameters

Functions to easily define and use implicit parameters. More...

Macros
#define	using_implicit_defer_exit(after, release_fun, local, name)
#define	using_implicit_defer(release_fun, local, name)
#define	using_implicit(local, name)
	Bind an implicit parameter. More...
#define	implicit_define(name)
	Define a new implicit parameter. More...
#define	implicit_declare(name)
	Declare a new implicit parameter. More...
#define	implicit_get(name)
	Get the value of an implicit parameter. More...

Detailed Description

Functions to easily define and use implicit parameters.

Example

implicit_define(width);

void bar() {
  printf("width is %i\n", lh_int_value(implicit_get(width)));
}

void foo() {
  {using_implicit(lh_value_int(42),width){
    bar();
  }}
}

Macro Definition Documentation

implicit_declare

#define implicit_declare

(

name

)

Declare a new implicit parameter.

This can be used in header files. There must be a corresponding implicit_define() too.

implicit_define

#define implicit_define

(

name

)

Define a new implicit parameter.

Parameters

name	The name of the implicit parameter.

implicit_get

#define implicit_get

(

name

)

Get the value of an implicit parameter.

Parameters

name	The name of a previously defined implicit parameter.

using_implicit

#define using_implicit	(		local,
			name
	)

Bind an implicit parameter.

Parameters

local	The value used for the implicit parameter.
name	The name of the implicit parameter (previously defined using implicit_define())

Example

implicit_define(width);

void bar() {
  printf("width is %i\n", lh_int_value(implicit_get(width)));
}

void foo() {
  {using_implicit(lh_value_int(42),width){
    bar();
  }}
}