327 lines
8.7 KiB
Scheme
327 lines
8.7 KiB
Scheme
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(library (ikarus core)
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(export)
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(import (scheme))
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(primitive-set! 'eof-object
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(lambda () (eof-object)))
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(primitive-set! 'void
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(lambda () (void)))
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(primitive-set! 'integer->char
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(lambda (n)
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(unless (fixnum? n)
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(error 'integer->char "~s is not a fixnum" n))
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(unless (and ($fx>= n 0)
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($fx<= n 255))
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(error 'integer->char "~s is out of range[0..255]" n))
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($fixnum->char n)))
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(primitive-set! 'char->integer
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(lambda (x)
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(unless (char? x)
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(error 'char->integer "~s is not a character" x))
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($char->fixnum x)))
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(primitive-set! 'gensym?
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(lambda (x)
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(and (symbol? x)
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(let ([s ($symbol-unique-string x)])
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(and s #t)))))
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(primitive-set! 'top-level-value
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(lambda (x)
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(unless (symbol? x)
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(error 'top-level-value "~s is not a symbol" x))
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(let ([v ($symbol-value x)])
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(when ($unbound-object? v)
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(error 'top-level-value "unbound variable ~s" x))
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v)))
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(primitive-set! 'top-level-bound?
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(lambda (x)
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(unless (symbol? x)
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(error 'top-level-bound? "~s is not a symbol" x))
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(not ($unbound-object? ($symbol-value x)))))
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(primitive-set! 'set-top-level-value!
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(lambda (x v)
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(unless (symbol? x)
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(error 'set-top-level-value! "~s is not a symbol" x))
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($set-symbol-value! x v)))
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(primitive-set! 'primitive-set!
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(lambda (x v)
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(unless (symbol? x)
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(error 'primitive-set! "~s is not a symbol" x))
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(primitive-set! x v)
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(set-top-level-value! x v)))
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(primitive-set! 'string->symbol
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(lambda (x)
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(unless (string? x)
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(error 'string->symbol "~s is not a string" x))
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(foreign-call "ikrt_string_to_symbol" x)))
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(primitive-set! 'gensym
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(case-lambda
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[() ($make-symbol #f)]
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[(s)
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(if (string? s)
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($make-symbol s)
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(if (symbol? s)
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($make-symbol ($symbol-string s))
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(error 'gensym "~s is neither a string nor a symbol" s)))]))
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(primitive-set! 'putprop
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(lambda (x k v)
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(unless (symbol? x) (error 'putprop "~s is not a symbol" x))
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(unless (symbol? k) (error 'putprop "~s is not a symbol" k))
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(let ([p ($symbol-plist x)])
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(cond
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[(assq k p) => (lambda (x) (set-cdr! x v))]
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[else
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($set-symbol-plist! x (cons (cons k v) p))]))))
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(primitive-set! 'getprop
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(lambda (x k)
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(unless (symbol? x) (error 'getprop "~s is not a symbol" x))
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(unless (symbol? k) (error 'getprop "~s is not a symbol" k))
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(let ([p ($symbol-plist x)])
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(cond
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[(assq k p) => cdr]
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[else #f]))))
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(primitive-set! 'remprop
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(lambda (x k)
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(unless (symbol? x) (error 'remprop "~s is not a symbol" x))
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(unless (symbol? k) (error 'remprop "~s is not a symbol" k))
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(let ([p ($symbol-plist x)])
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(unless (null? p)
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(let ([a ($car p)])
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(cond
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[(eq? ($car a) k) ($set-symbol-plist! x ($cdr p))]
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[else
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(let f ([q p] [p ($cdr p)])
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(unless (null? p)
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(let ([a ($car p)])
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(cond
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[(eq? ($car a) k)
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($set-cdr! q ($cdr p))]
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[else
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(f p ($cdr p))]))))]))))))
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(primitive-set! 'property-list
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(lambda (x)
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(unless (symbol? x)
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(error 'property-list "~s is not a symbol" x))
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(letrec ([f
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(lambda (ls ac)
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(cond
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[(null? ls) ac]
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[else
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(let ([a ($car ls)])
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(f ($cdr ls)
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(cons ($car a) (cons ($cdr a) ac))))]))])
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(f ($symbol-plist x) '()))))
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(primitive-set! 'apply
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(let ()
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(define (err f ls)
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(if (procedure? f)
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(error 'apply "not a list")
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(error 'apply "~s is not a procedure" f)))
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(define (fixandgo f a0 a1 ls p d)
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(cond
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[(null? ($cdr d))
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(let ([last ($car d)])
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($set-cdr! p last)
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(if (and (procedure? f) (list? last))
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($$apply f a0 a1 ls)
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(err f last)))]
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[else (fixandgo f a0 a1 ls d ($cdr d))]))
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(define apply
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(case-lambda
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[(f ls)
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(if (and (procedure? f) (list? ls))
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($$apply f ls)
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(err f ls))]
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[(f a0 ls)
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(if (and (procedure? f) (list? ls))
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($$apply f a0 ls)
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(err f ls))]
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[(f a0 a1 ls)
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(if (and (procedure? f) (list? ls))
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($$apply f a0 a1 ls)
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(err f ls))]
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[(f a0 a1 . ls)
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(fixandgo f a0 a1 ls ls ($cdr ls))]))
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apply))
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(primitive-set! 'gensym->unique-string
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(lambda (x)
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(unless (symbol? x)
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(error 'gensym->unique-string "~s is not a gensym" x))
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(let ([us ($symbol-unique-string x)])
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(cond
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[(string? us) us]
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[(not us)
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(error 'gensym->unique-string "~s is not a gensym" x)]
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[else
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(let f ([x x])
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(let ([id (uuid)])
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($set-symbol-unique-string! x id)
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(cond
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[(foreign-call "ikrt_intern_gensym" x) id]
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[else (f x)])))]))))
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(primitive-set! 'gensym-prefix
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(make-parameter
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"g"
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(lambda (x)
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(unless (string? x)
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(error 'gensym-prefix "~s is not a string" x))
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x)))
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(primitive-set! 'gensym-count
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(make-parameter
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0
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(lambda (x)
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(unless (and (fixnum? x) ($fx>= x 0))
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(error 'gensym-count "~s is not a valid count" x))
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x)))
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(primitive-set! 'print-gensym
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(make-parameter
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#t
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(lambda (x)
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(unless (or (boolean? x) (eq? x 'pretty))
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(error 'print-gensym "~s is not in #t|#f|pretty" x))
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x)))
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(primitive-set! 'pointer-value
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(lambda (x)
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(pointer-value x)))
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(primitive-set! 'date-string
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(lambda ()
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(let ([s (make-string 10)])
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(foreign-call "ikrt_strftime" s "%F")
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s)))
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(primitive-set! 'command-line-arguments
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(make-parameter ($arg-list)
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(lambda (x)
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(if (and (list? x) (andmap string? x))
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x
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(error 'command-list "invalid command-line-arguments ~s\n" x)))))
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(let ()
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(define f
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(lambda (n i j)
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(cond
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[($fxzero? n)
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(values (make-string i) j)]
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[else
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(let ([q ($fxquotient n 10)])
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(call-with-values
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(lambda () (f q ($fxadd1 i) j))
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(lambda (str j)
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(let ([r ($fx- n ($fx* q 10))])
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(string-set! str j
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($fixnum->char ($fx+ r ($char->fixnum #\0))))
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(values str ($fxadd1 j))))))])))
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(primitive-set! 'fixnum->string
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(lambda (x)
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(unless (fixnum? x) (error 'fixnum->string "~s is not a fixnum" x))
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(cond
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[($fxzero? x) "0"]
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[($fx> x 0)
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(call-with-values
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(lambda () (f x 0 0))
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(lambda (str j) str))]
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[($fx= x -536870912) "-536870912"]
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[else
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(call-with-values
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(lambda () (f ($fx- 0 x) 1 1))
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(lambda (str j)
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($string-set! str 0 #\-)
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str))]))))
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(primitive-set! 'symbol->string
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(lambda (x)
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(unless (symbol? x)
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(error 'symbol->string "~s is not a symbol" x))
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(let ([str ($symbol-string x)])
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(or str
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(let ([ct (gensym-count)])
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(let ([str (string-append (gensym-prefix) (fixnum->string ct))])
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($set-symbol-string! x str)
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(gensym-count ($fxadd1 ct))
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str))))))
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(primitive-set! 'string->number
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(lambda (x)
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(define (convert-data str len pos? idx ac)
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(cond
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[($fx= idx len) (if pos? ac (- 0 ac))]
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[else
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(let ([c ($string-ref str idx)])
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(cond
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[(and ($char<= #\0 c) ($char<= c #\9))
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(convert-data str len pos? ($fxadd1 idx)
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(+ (* ac 10)
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($fx- ($char->fixnum c) ($char->fixnum #\0))))]
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[else #f]))]))
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(define (convert-data-init str len pos? idx c)
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(cond
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[($char= c #\0)
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(if ($fx= idx len)
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0
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(convert-data-init str len pos?
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($fxadd1 idx)
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($string-ref str idx)))]
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[(and ($char<= #\1 c) ($char<= c #\9))
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(convert-data str len pos? idx
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($fx- ($char->fixnum c) ($char->fixnum #\0)))]
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[else #f]))
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(define (convert-num str len pos?)
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(cond
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[($fx> len 1)
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(convert-data-init str len pos? 2 ($string-ref str 1))]
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[else #f]))
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(define (convert-sign str len)
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(cond
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[($fx> len 0)
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(let ([c ($string-ref str 0)])
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(case c
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[(#\+) (convert-num str len #t)]
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[(#\-) (convert-num str len #f)]
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[else
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(convert-data-init str len #t 1 c)]))]
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[else #f]))
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(cond
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[(string? x)
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(convert-sign x ($string-length x))]
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[else (error 'string->number "~s is not a string" x)])))
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)
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