mirror of
https://github.com/kanaka/mal.git
synced 2024-11-10 12:47:45 +03:00
117 lines
2.9 KiB
Racket
117 lines
2.9 KiB
Racket
#lang racket
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(provide core_ns)
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(require "readline.rkt" "types.rkt" "reader.rkt" "printer.rkt")
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(define (throw exc)
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(raise (make-mal-exn "mal exception"
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(current-continuation-marks)
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exc)))
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;; Sequence functions
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(define do_apply
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(lambda a
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(let* ([f (first a)]
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[lst (_to_list (last a))]
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[args (append (take (drop a 1) (- (length a) 2)) lst)])
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(apply f args))))
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(define conj
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(lambda a
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(if (vector? (first a))
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(vector-append (first a) (list->vector (rest a)))
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(append (reverse (rest a)) (first a)))))
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(define (seq obj)
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(cond [(_nil? obj) nil]
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[(_string? obj) (if (eq? 0 (string-length obj)) nil (map string (string->list obj)))]
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[(_empty? obj) nil]
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[else (_to_list obj)]))
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;; Meta functions
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(define (meta obj)
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(cond [(malfunc? obj) (malfunc-meta obj)]
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[else nil]))
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(define (with-meta obj m)
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(cond [(malfunc? obj) (struct-copy malfunc obj [meta m])]
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[else (raise "metadata not supported on type")]))
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;; Atom functions
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(define swap!
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(lambda a
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(let* ([atm (first a)]
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[f (second a)]
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[args (cons (atom-val atm) (rest (rest a)))]
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[val (apply f args)])
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(set-atom-val! atm val)
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val)))
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(define core_ns
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(hash
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'= _equal?
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'throw throw
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'nil? _nil?
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'true? (lambda (x) (eq? x #t))
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'false? (lambda (x) (eq? x #f))
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'symbol (lambda (s) (if (symbol? s) s (string->symbol s)))
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'symbol? symbol?
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'string? _string?
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'keyword (lambda (s) (if (_keyword? s) s (_keyword s)))
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'keyword? _keyword?
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'pr-str (lambda a (pr_lst a #t " "))
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'str (lambda a (pr_lst a #f ""))
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'prn (lambda a (printf "~a~n" (pr_lst a #t " ")) nil)
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'println (lambda a (printf "~a~n" (pr_lst a #f " ")) nil)
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'read-string (lambda (s) (read_str s))
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'readline readline
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'slurp (lambda (f) (port->string (open-input-file f)))
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'< <
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'<= <=
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'> >
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'>= >=
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'+ +
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'- -
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'* *
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'/ /
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'time-ms (lambda () (round (current-inexact-milliseconds)))
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'list list
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'list? list?
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'vector vector
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'vector? vector?
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'hash-map hash
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'map? hash?
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'assoc _assoc
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'dissoc _dissoc
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'get _get
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'contains? dict-has-key?
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'keys hash-keys
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'vals hash-values
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'sequential? _sequential?
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'cons (lambda a (cons (first a) (_to_list (second a))))
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'concat (lambda a (apply append (map _to_list a)))
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'nth _nth
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'first _first
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'rest _rest
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'empty? _empty?
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'count _count
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'apply do_apply
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'map (lambda (f s) (_to_list (_map f s)))
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'conj conj
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'seq seq
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'meta meta
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'with-meta with-meta
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'atom atom
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'atom? atom?
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'deref (lambda (a) (atom-val a))
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'reset! (lambda (a v) (set-atom-val! a v) v)
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'swap! swap!))
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