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compiler.scm
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(export (compile))
(macro init ()
'(nop 500 >r))
(init)
(macro length (l)
(cond (((= l ()) 0)
(true (+ 1
(length
(cdr l)))))))
(macro load_inputs (many mbv)
(cond (((= many 0) ())
((= mbv 0)
'(nop r@ !
,(load_inputs (- many 1)
(+ mbv 1))))
(true
'(nop (+ r@ mbv) !
,(load_inputs (- many 1)
(+ mbv 1)))))))
(macro replace_many (pairs code)
(cond (((= pairs ()) code)
(true (replace_many
(cdr pairs)
(replace_one (car pairs)
code))))))
(macro replace_one (pair code)
(cond (((= code ()) ())
((= code (car pair)) (car (cdr pair)))
((not (is_list code)) code)
(true (cons (replace_one pair (car code))
(replace_one pair (cdr code)))))))
(macro function_internal (Vars code mbv env funs)
'(end_fun
def
,(load_inputs (length Vars) mbv)
,(replace_many (function_internal_pairs Vars mbv)
'code)))
(macro function_internal_pairs (l mbv)
(cond (((= l ()) ())
(true
(cons
(cons (car l)
(cons (@ (+ r@ mbv))
()))
(function_internal_pairs
(cdr l)
(+ mbv 1)))))))
(macro cond_internal (mbv X env funs)
(cond (((= X ()) '(()))
((= (car (car X)) true)
(cdr (car X)))
(true '(nop
,(compile2 mbv (car (car X)) env funs)
if
,(compile2 mbv (car (cdr (car X))) env funs)
else
(cond_internal mbv ,(cdr X) env funs)
then)))))
(macro =_i (A B) '(nop A B === tuck drop drop))
(macro tree_internal (T)
(cond (((= T ()) '(nil))
((is_list (car T))
'(cons ,(tree_internal (car T))
,(tree_internal (cdr T))))
(true '(cons ,(car T)
,(tree_internal (cdr T)))))))
(macro let_setup_inputs (mbv pairs env funs)
'(nop
(compile2 (+ mbv 1)
(car (cdr (car pairs)))
env
funs)
(let_setup_inputs2 (length (car (car pairs)))
mbv)))
(macro let_setup_inputs2 (many_in mbv)
(cond (((= many_in 0) ())
(true '(() (nop r@ mbv + !)
(let_setup_inputs2
(- many_in 1)
(+ mbv 1)))))))
(macro let_setup_env (mbv pairs code env funs)
(let_internal
(+ mbv (length (car (car pairs))))
(cdr pairs)
code
(let_setup_env2 env mbv (reverse (car (car pairs))))
funs))
(macro let_setup_env2 (env mbv vars)
(cond (((= vars ()) env)
(true (let_setup_env2
(lambda (internal_arg)
(cond (((= internal_arg (car vars))
(@ (+ r@ mbv)))
(true (env internal_arg)))))
(+ 1 mbv)
(cdr vars))))))
(macro let_internal (mbv pairs code env funs)
(cond (((= pairs ()) (compile2 mbv code env funs))
((is_list (car (car pairs))) ;(write '(let internal pairs two)))
'((),(let_setup_inputs mbv pairs env funs)
,(let_setup_env mbv pairs code env funs)))
; ))
(true
'((! (compile2 (+ mbv 1)
(car (cdr (car pairs)))
env
funs)
(+ r@ mbv))
,(let_internal
(+ mbv 1)
(cdr pairs)
code
(lambda (y)
(cond (((= y (car (car pairs)))
(@ (+ r@ mbv)))
(true (env y)))))
funs))))))
(macro execute_helper (fun code mbv)
(cond
(((= mbv 0)
(call code fun))
(true
'((call code fun
(>r (+ r@ mbv)))
(drop r>))))))
(macro
compile2 (mbv expr env funs)
(cond
(((is_number expr) expr)
((is_atom expr) (env expr))
((null? expr) ())
((null? (car expr))
(compile2 mbv (cdr expr) env funs))
((= let (car expr))
(let_internal mbv
(car (cdr expr))
(car (cdr (cdr expr)))
env
funs))
; ((= (car expr) quote) (cdr expr))
((= cond (car expr))
(cond_internal mbv (car (cdr expr)) env funs))
((= = (car expr))
(=_i (compile2 mbv (car (cdr expr)) env funs)
(compile2 mbv (car (cdr (cdr expr))) env funs)))
((= tree (car expr))
(tree_internal (car (cdr expr))))
((= set! (car expr))
(! (compile2 mbv (car (cdr (cdr expr))) env funs)
(compile2 mbv (car (cdr expr)) env funs)))
((funs (car expr))
(execute_helper
(@ (compile2 0 (car expr) env funs))
(compile2 0 (cons nop (cdr expr)) env funs)
mbv))
((is_atom (car expr))
(cons (env (car expr))
(compile2 mbv (cdr expr) env funs)))
((is_number (car expr))
(cons (car expr)
(compile2 mbv (cdr expr) env funs)))
((= def (car (car expr)))
((! (function_internal
(reverse (compile2
mbv
(car (cdr (cdr (car expr)))) env funs))
(compile2
(+ (length (car (cdr (cdr (car expr)))))
mbv)
; mbv
(car (cdr (cdr (cdr (car expr))))) env funs)
mbv env funs)
(compile2 mbv (car (cdr (car expr))) env funs))
(compile2
mbv
(cdr expr)
env
;update this boolean function to return 'true' if we lookup whether this variable is storing a function.
(lambda (y) (cond (((= (compile2 mbv y env funs)
(compile2 mbv (car (cdr (car expr))) env funs))
1)
(true (funs y))))))))
((is_list (car expr))
(cons (compile2 mbv (car expr) env funs)
(compile2 mbv (cdr expr) env funs)))
(true (()
,(write '(undefined syntax))
,(write (car expr)))))))
(macro compile (expr)
(compile2
0 ;how many bound variables in the current runtime environment.
expr
(lambda (x) x);
(lambda (_) 0)))
(macro test ()
'(()
,(! 5 N)
,(compile '(= 5 (@ N)))
(=_i (cons 3 nil)
,(compile '(cons 3 nil)))
(=_i 15 ,(compile '(+ (@ N) 10)))
(=_i (+ 3 6)
,(compile '(+ 4 5)))
,(compile '(= 5 (cond (((> 5 4) (@ N))
((= 1 2) 6)
(true 3)))))
(=_i (tree_internal (1 2 3 4))
,(compile '(tree (1 2 3 4))))
,(compile '((def f1 (x y z) (- x y));defining a function
(= 4 (f1 7 3 1))
(= 10 (f1 15 (f1 (f1 11 1 0) 5 0) 0))
))
,(compile '((set! A 50);global variables
(= 50 (@ A))))
,(compile '(= 21 (let ((foo 20);local variables using r-stack
(bar (- foo 2)))
((+ bar 3)))))
,(compile '((def f (x) (+ 2 (* x x)))
(= 11 (let ((a (f 1))
(b (f a)))
b))))
and and and and and and and and and and
,(compile '(= 100 (let (((a b) (car@ (cons 100 (cons 101 nil)))));binding variables to functions that have more than one output.
(a))))
,(compile '(= 102 (let (((x y z) (nop 101 102 103)))
y)))
and and
;loading variables from the stack into local variable space
,(compile '(= 23 (nop 11 12 (let (((b c) ()))
(+ b c)))))
and
,(compile '(nop 11 12 13 14 15 (let (((A B C D E) ()))
(nop 21 A E 25))))
drop drop drop drop
))
(test)