loop.c File Reference

#include "consspaceobject.h"
#include "lispops.h"
#include "loop.h"

Include dependency graph for loop.c:

Go to the source code of this file.

Functions
struct cons_pointer	lisp_loop (struct stack_frame *frame, struct cons_pointer frame_pointer, struct cons_pointer env)
	Special form, not dissimilar to let.

Function Documentation

lisp_loop()

struct cons_pointer lisp_loop	(	struct stack_frame *	frame,
		struct cons_pointer	frame_pointer,
		struct cons_pointer	env
	)

Special form, not dissimilar to let.

Essentially,

1. the first arg (args) is an assoc list;
2. the second arg (body) is an expression.

Each of the vals in the assoc list is evaluated, and bound to its respective key in a new environment. The body is then evaled in that environment. If the result is an object of type LOOP, it should carry a list of values of the same arity as args. Each of the keys in args is then rebound in a new environment to the respective value from the LOOP object, and body is then re-evaled in that environment.

If the result is not a LOOP object, it is simply returned.

Definition at line 45 of file loop.c.

References c_keys().