187 lines
5.0 KiB
Racket
Executable File
187 lines
5.0 KiB
Racket
Executable File
#lang eopl
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(require tests/eopl/private/utils)
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(require "data-structures.rkt") ; for expval constructors
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(require "cps-in-lang.rkt") ; for scan&parse
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(require "cps.rkt") ; for cps transformer
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(require "interp.rkt") ; for value-of-program
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(require (only-in racket pretty-print))
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(define instrument-cps (make-parameter #f))
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;; run : String -> ExpVal
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(define run
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(lambda (string)
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(let ((cpsed-pgm
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(cps-of-program (scan&parse string))))
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(when (instrument-cps) (pretty-print cpsed-pgm))
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(value-of-program cpsed-pgm))))
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(define equal-answer?
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(lambda (ans correct-ans)
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(equal? ans (sloppy->expval correct-ans))))
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(define sloppy->expval
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(lambda (sloppy-val)
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(cond
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((number? sloppy-val) (num-val sloppy-val))
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((boolean? sloppy-val) (bool-val sloppy-val))
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(else
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(eopl:error 'sloppy->expval
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"Can't convert sloppy value to expval: ~s"
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sloppy-val)))))
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(define-syntax-rule (check-run (name str res) ...)
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(begin
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(cond [(eqv? 'res 'error)
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(check-exn always? (lambda () (run str)))]
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[else
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(check equal-answer? (run str) 'res (symbol->string 'name))])
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...))
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;;;;;;;;;;;;;;;; tests ;;;;;;;;;;;;;;;;
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(check-run
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;; simple arithmetic
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(positive-const "11" 11)
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(negative-const "-33" -33)
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(simple-arith-1 "-(44,33)" 11)
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;; nested arithmetic
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(nested-arith-left "-(-(44,33),22)" -11)
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(nested-arith-right "-(55, -(22,11))" 44)
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;; simple variables
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(test-var-1 "x" 10)
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(test-var-2 "-(x,1)" 9)
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(test-var-3 "-(1,x)" -9)
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;; simple unbound variables
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(test-unbound-var-1 "foo" error)
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(test-unbound-var-2 "-(x,foo)" error)
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;; simple conditionals
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(if-true "if zero?(0) then 3 else 4" 3)
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(if-false "if zero?(1) then 3 else 4" 4)
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;; test dynamic typechecking
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(no-bool-to-diff-1 "-(zero?(0),1)" error)
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(no-bool-to-diff-2 "-(1,zero?(0))" error)
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(no-int-to-if "if 1 then 2 else 3" error)
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;; make sure that the test and both arms get evaluated
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;; properly.
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(if-eval-test-true "if zero?(-(11,11)) then 3 else 4" 3)
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(if-eval-test-false "if zero?(-(11, 12)) then 3 else 4" 4)
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;; and make sure the other arm doesn't get evaluated.
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(if-eval-test-true-2 "if zero?(-(11, 11)) then 3 else foo" 3)
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(if-eval-test-false-2 "if zero?(-(11,12)) then foo else 4" 4)
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;; simple let
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(simple-let-1 "let x = 3 in x" 3)
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;; make sure the body and rhs get evaluated
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(eval-let-body "let x = 3 in -(x,1)" 2)
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(eval-let-rhs "let x = -(4,1) in -(x,1)" 2)
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;; check nested let and shadowing
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(simple-nested-let "let x = 3 in let y = 4 in -(x,y)" -1)
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(check-shadowing-in-body "let x = 3 in let x = 4 in x" 4)
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(check-shadowing-in-rhs "let x = 3 in let x = -(x,1) in x" 2)
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;; simple applications
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(apply-proc-in-rator-pos "(proc(x) -(x,1) 30)" 29)
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(apply-simple-proc "let f = proc (x) -(x,1) in (f 30)" 29)
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(let-to-proc-1 "(proc(f)(f 30) proc(x)-(x,1))" 29)
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(nested-procs-not-in-cps "((proc (x) proc (y) -(x,y) 5) 6)" -1)
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(nested-procs-in-tf "(proc (x y) -(x,y) 5 6)" -1)
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(nested-procs2 "let f = proc(x y) -(x,y) in (f -(10,5) 6)"
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-1)
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(y-combinator-1-not-in-tf "
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let fix = proc (f)
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let d = proc (x) proc (z) ((f (x x)) z)
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in proc (n) ((f (d d)) n)
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in let
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t4m = proc (f) proc(x) if zero?(x) then 0 else -((f -(x,1)),-4)
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in let times4 = (fix t4m)
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in (times4 3)" 12)
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;; this one is not in cps
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(twice "
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(proc (twice)
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((twice proc (z) -(z,1)) 11)
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proc (f) proc (x) (f (f x)))"
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9)
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(twice-cps "
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let twice = proc(f x k)
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(f x proc (z) (f z k))
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in (twice
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proc (x k) (k -(x,1))
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11
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proc(z) z)"
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9)
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(cps-both-simple "
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let f = proc (x) -(x,1)
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in (f 27)"
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26)
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(cps-simple-rator "
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let f = proc (x) -(x,1)
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in (f (f 27))"
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25)
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(cps-simple-rand "
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let f = proc (x) proc (y) -(x,y)
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in ((f 27) 4)"
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23)
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(cps-neither-simple "
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let f = proc (x) proc (y) -(x, y)
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in let g = proc (z) -(z, 1)
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in ((f 27) (g 11))"
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17)
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(cps-serious-zero-test "
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let f = proc (x) -(x, 1)
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in if zero?((f 1)) then 11 else 22"
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11)
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(sum-test-1 "+()" 0)
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(sum-test-2 "+(2,3,4)" 9)
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(letrec-test-1 "letrec f(x) = 17 in 34" 34)
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(letrec-test-2 "letrec f(x y) = -(x,y) in -(34, 2)" 32)
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(letrec-test-3 "
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letrec even(x) = if zero?(x) then zero?(0) else (odd -(x,1))
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odd (x) = if zero?(x) then zero?(1) else (even -(x,1))
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in (even 5)"
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#f)
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(letrec-test-4 "
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letrec fib(n) = if zero?(n) then 1
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else if zero?(-(n,1)) then 1
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else -((fib -(n,1)), -(0, (fib -(n,2))))
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in (fib 5)"
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8)
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(letrec-sum-test-5 "
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letrec fib(n) = if zero?(n) then 1
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else if zero?(-(n,1)) then 1
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else -((fib -(n,1)), -(0, (fib -(n,2))))
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in +((fib 1), 12, (fib 5))"
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21)
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)
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