ikarus/src/ikarus.predicates.ss

163 lines
4.7 KiB
Scheme

(library (ikarus predicates)
(export fixnum? flonum? bignum? number? complex? real? rational?
integer? exact? eof-object? bwp-object? immediate?
boolean? char? vector? string? procedure? null? pair?
symbol? code? not weak-pair? eq? eqv? equal?)
(import
(except (ikarus) fixnum? flonum? bignum? number? complex? real?
rational? integer? exact? eof-object? bwp-object?
immediate? boolean? char? vector? string? procedure?
null? pair? weak-pair? symbol? code? not eq? eqv? equal?
port? input-port? output-port?)
(ikarus system $fx)
(ikarus system $pairs)
(ikarus system $chars)
(ikarus system $strings)
(ikarus system $vectors)
(rename (only (ikarus) fixnum? flonum? bignum? eof-object?
bwp-object? immediate? boolean? char? vector? string?
procedure? null? pair? symbol? code? eq?
port? input-port? output-port?)
(fixnum? sys:fixnum?)
(flonum? sys:flonum?)
(bignum? sys:bignum?)
(eof-object? sys:eof-object?)
(bwp-object? sys:bwp-object?)
(immediate? sys:immediate?)
(boolean? sys:boolean?)
(char? sys:char?)
(vector? sys:vector?)
(string? sys:string?)
(procedure? sys:procedure?)
(null? sys:null?)
(pair? sys:pair?)
(symbol? sys:symbol?)
(code? sys:code?)
(eq? sys:eq?)
(port? sys:port?)
(input-port? sys:input-port?)
(output-port? sys:output-port?)
))
(define fixnum?
(lambda (x) (sys:fixnum? x)))
(define bignum?
(lambda (x) (sys:bignum? x)))
(define flonum?
(lambda (x) (sys:flonum? x)))
(define number?
(lambda (x)
(or (sys:fixnum? x)
(sys:bignum? x)
(sys:flonum? x))))
(define complex?
(lambda (x) (number? x)))
(define real?
(lambda (x) (number? x)))
(define rational?
(lambda (x)
(cond
[(sys:fixnum? x) #t]
[(sys:bignum? x) #t]
[(sys:flonum? x) #f]
[else (error 'rational? "~s is not a number" x)])))
(define integer?
(lambda (x)
(cond
[(sys:fixnum? x) #t]
[(sys:bignum? x) #t]
[(sys:flonum? x) (error 'integer "dunno for ~s" x)]
[else #f])))
(define exact?
(lambda (x)
(cond
[(sys:fixnum? x) #t]
[(sys:bignum? x) #t]
[(sys:flonum? x) #f]
[else
(error 'exact? "~s is not a number" x)])))
(define eof-object? (lambda (x) (sys:eof-object? x)))
(define bwp-object? (lambda (x) (sys:bwp-object? x)))
(define immediate? (lambda (x) (sys:immediate? x)))
(define boolean? (lambda (x) (sys:boolean? x)))
(define char? (lambda (x) (sys:char? x)))
(define vector? (lambda (x) (sys:vector? x)))
(define string? (lambda (x) (sys:string? x)))
(define procedure? (lambda (x) (sys:procedure? x)))
(define null? (lambda (x) (sys:null? x)))
(define pair? (lambda (x) (sys:pair? x)))
(define symbol? (lambda (x) (sys:symbol? x)))
(define code? (lambda (x) (sys:code? x)))
(define weak-pair?
(lambda (x)
(and (pair? x)
(foreign-call "ikrt_is_weak_pair" x))))
(define not (lambda (x) (if x #f #t)))
(define eq? (lambda (x y) (sys:eq? x y)))
(define eqv?
(lambda (x y)
(or (sys:eq? x y)
(and (number? x) (number? y) (= x y)))))
(module (equal?)
(define vector-loop
(lambda (x y i n)
(or ($fx= i n)
(and (equal? ($vector-ref x i) ($vector-ref y i))
(vector-loop x y ($fxadd1 i) n)))))
(define string-loop
(lambda (x y i n)
(or ($fx= i n)
(and ($char= ($string-ref x i) ($string-ref y i))
(string-loop x y ($fxadd1 i) n)))))
(define equal?
(lambda (x y)
(cond
[(sys:eq? x y) #t]
[(pair? x)
(and (pair? y)
(equal? ($car x) ($car y))
(equal? ($cdr x) ($cdr y)))]
[(vector? x)
(and (vector? y)
(let ([n ($vector-length x)])
(and ($fx= n ($vector-length y))
(vector-loop x y 0 n))))]
[(string? x)
(and (string? y)
(let ([n ($string-length x)])
(and ($fx= n ($string-length y))
(string-loop x y 0 n))))]
[(number? x) (and (number? y) (= x y))]
[else #f]))))
(define port?
(lambda (x) (sys:port? x)))
(define input-port?
(lambda (x) (sys:input-port? x)))
(define output-port?
(lambda (x) (sys:output-port? x)))
)