194 lines
5.3 KiB
Racket
Executable File
194 lines
5.3 KiB
Racket
Executable File
#lang eopl
|
|
(require tests/eopl/private/utils)
|
|
|
|
(require "data-structures.rkt") ; for expval constructors
|
|
(require "lang.rkt") ; for scan&parse
|
|
(require "interp.rkt") ; for value-of-program
|
|
|
|
;; run : String -> ExpVal
|
|
;; Page: 71
|
|
(define run
|
|
(lambda (string)
|
|
(value-of-program (scan&parse string))))
|
|
|
|
(define equal-answer?
|
|
(lambda (ans correct-ans)
|
|
(equal? ans (sloppy->expval correct-ans))))
|
|
|
|
(define sloppy->expval
|
|
(lambda (sloppy-val)
|
|
(cond
|
|
((number? sloppy-val) (num-val sloppy-val))
|
|
((boolean? sloppy-val) (bool-val sloppy-val))
|
|
(else
|
|
(eopl:error 'sloppy->expval
|
|
"Can't convert sloppy value to expval: ~s"
|
|
sloppy-val)))))
|
|
|
|
(define-syntax-rule (check-run (name str res) ...)
|
|
(begin
|
|
(cond [(eqv? 'res 'error)
|
|
(check-exn always? (lambda () (run str)))]
|
|
[else
|
|
(check equal-answer? (run str) 'res (symbol->string 'name))])
|
|
...))
|
|
|
|
|
|
;;;;;;;;;;;;;;;; tests ;;;;;;;;;;;;;;;;
|
|
|
|
(check-run
|
|
;; simple arithmetic
|
|
(positive-const "11" 11)
|
|
(negative-const "-33" -33)
|
|
(simple-arith-1 "-(44,33)" 11)
|
|
|
|
;; nested arithmetic
|
|
(nested-arith-left "-(-(44,33),22)" -11)
|
|
(nested-arith-right "-(55, -(22,11))" 44)
|
|
|
|
;; simple variables
|
|
(test-var-1 "x" 10)
|
|
(test-var-2 "-(x,1)" 9)
|
|
(test-var-3 "-(1,x)" -9)
|
|
|
|
;; simple unbound variables
|
|
(test-unbound-var-1 "foo" error)
|
|
(test-unbound-var-2 "-(x,foo)" error)
|
|
|
|
;; simple conditionals
|
|
(if-true "if zero?(0) then 3 else 4" 3)
|
|
(if-false "if zero?(1) then 3 else 4" 4)
|
|
|
|
;; test dynamic typechecking
|
|
(no-bool-to-diff-1 "-(zero?(0),1)" error)
|
|
(no-bool-to-diff-2 "-(1,zero?(0))" error)
|
|
(no-int-to-if "if 1 then 2 else 3" error)
|
|
|
|
;; make sure that the test and both arms get evaluated
|
|
;; properly.
|
|
(if-eval-test-true "if zero?(-(11,11)) then 3 else 4" 3)
|
|
(if-eval-test-false "if zero?(-(11, 12)) then 3 else 4" 4)
|
|
|
|
;; and make sure the other arm doesn't get evaluated.
|
|
(if-eval-test-true-2 "if zero?(-(11, 11)) then 3 else foo" 3)
|
|
(if-eval-test-false-2 "if zero?(-(11,12)) then foo else 4" 4)
|
|
|
|
;; simple let
|
|
(simple-let-1 "let x = 3 in x" 3)
|
|
|
|
;; make sure the body and rhs get evaluated
|
|
(eval-let-body "let x = 3 in -(x,1)" 2)
|
|
(eval-let-rhs "let x = -(4,1) in -(x,1)" 2)
|
|
|
|
;; check nested let and shadowing
|
|
(simple-nested-let "let x = 3 in let y = 4 in -(x,y)" -1)
|
|
(check-shadowing-in-body "let x = 3 in let x = 4 in x" 4)
|
|
(check-shadowing-in-rhs "let x = 3 in let x = -(x,1) in x" 2)
|
|
|
|
;; simple applications
|
|
(apply-proc-in-rator-pos "(proc(x) -(x,1) 30)" 29)
|
|
(apply-simple-proc "let f = proc (x) -(x,1) in (f 30)" 29)
|
|
(let-to-proc-1 "(proc(f)(f 30) proc(x)-(x,1))" 29)
|
|
|
|
|
|
(nested-procs "((proc (x) proc (y) -(x,y) 5) 6)" -1)
|
|
(nested-procs2 "let f = proc(x) proc (y) -(x,y) in ((f -(10,5)) 6)"
|
|
-1)
|
|
|
|
(y-combinator-1 "
|
|
let fix = proc (f)
|
|
let d = proc (x) proc (z) ((f (x x)) z)
|
|
in proc (n) ((f (d d)) n)
|
|
in let
|
|
t4m = proc (f) proc(x) if zero?(x) then 0 else -((f -(x,1)),-4)
|
|
in let times4 = (fix t4m)
|
|
in (times4 3)" 12)
|
|
|
|
;; simple letrecs
|
|
(simple-letrec-1 "letrec f(x) = -(x,1) in (f 33)" 32)
|
|
(simple-letrec-2
|
|
"letrec f(x) = if zero?(x) then 0 else -((f -(x,1)), -2) in (f 4)"
|
|
8)
|
|
|
|
(simple-letrec-3
|
|
"let m = -5
|
|
in letrec f(x) = if zero?(x) then 0 else -((f -(x,1)), m) in (f 4)"
|
|
20)
|
|
|
|
; (fact-of-6 "letrec
|
|
; fact(x) = if zero?(x) then 1 else *(x, (fact sub1(x)))
|
|
;in (fact 6)"
|
|
; 720)
|
|
|
|
(HO-nested-letrecs
|
|
"letrec even(odd) = proc(x) if zero?(x) then 1 else (odd -(x,1))
|
|
in letrec odd(x) = if zero?(x) then 0 else ((even odd) -(x,1))
|
|
in (odd 13)" 1)
|
|
|
|
|
|
(begin-test-1
|
|
"begin 1; 2; 3 end"
|
|
3)
|
|
|
|
(gensym-test-1
|
|
"let g = let counter = newref(0)
|
|
in proc (dummy) let d = setref(counter, -(deref(counter),-1))
|
|
in deref(counter)
|
|
in -((g 11),(g 22))"
|
|
-1)
|
|
|
|
(simple-store-test-1 "let x = newref(17) in deref(x)" 17)
|
|
|
|
(assignment-test-1 "let x = newref(17)
|
|
in begin setref(x,27); deref(x) end"
|
|
27)
|
|
|
|
(gensym-test-2
|
|
"let g = let counter = newref(0)
|
|
in proc (dummy) begin
|
|
setref(counter, -(deref(counter),-1));
|
|
deref(counter)
|
|
end
|
|
in -((g 11),(g 22))"
|
|
-1)
|
|
|
|
(even-odd-via-set-1 "
|
|
let x = newref(0)
|
|
in letrec even(d) = if zero?(deref(x))
|
|
then 1
|
|
else let d = setref(x, -(deref(x),1))
|
|
in (odd d)
|
|
odd(d) = if zero?(deref(x))
|
|
then 0
|
|
else let d = setref(x, -(deref(x),1))
|
|
in (even d)
|
|
in let d = setref(x,13) in (odd -100)" 1)
|
|
|
|
(even-odd-via-set-1 "
|
|
let x = newref(0)
|
|
in letrec even(d) = if zero?(deref(x))
|
|
then 1
|
|
else let d = setref(x, -(deref(x),1))
|
|
in (odd d)
|
|
odd(d) = if zero?(deref(x))
|
|
then 0
|
|
else let d = setref(x, -(deref(x),1))
|
|
in (even d)
|
|
in let d = setref(x,13) in (odd -100)" 1)
|
|
|
|
(show-allocation-1 "
|
|
let x = newref(22)
|
|
in let f = proc (z) let zz = newref(-(z,deref(x))) in deref(zz)
|
|
in -((f 66), (f 55))"
|
|
11)
|
|
|
|
(chains-1 "
|
|
let x = newref(newref(0))
|
|
in begin
|
|
setref(deref(x), 11);
|
|
deref(deref(x))
|
|
end"
|
|
11)
|
|
|
|
)
|