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77 lines
2.3 KiB
Scheme
77 lines
2.3 KiB
Scheme
;; Copyright (C) 2015
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;; "Mu Lei" known as "NalaGinrut" <NalaGinrut@gmail.com>
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;; This file is free software: you can redistribute it and/or modify
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;; it under the terms of the GNU General Public License as published by
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;; the Free Software Foundation, either version 3 of the License, or
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;; (at your option) any later version.
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;; This file is distributed in the hope that it will be useful,
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;; but WITHOUT ANY WARRANTY; without even the implied warranty of
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;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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;; GNU General Public License for more details.
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;; You should have received a copy of the GNU General Public License
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;; along with this program. If not, see <http://www.gnu.org/licenses/>.
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(library (types)
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(export string-sub *eof* non-list?
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string->keyword _keyword?
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nil _nil?
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cond-true?
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atom atom? atom-val atom-val-set!
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make-callable callable? callable-is_macro
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callable-is_macro-set! callable-closure
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is-func? is-macro? make-func callable-apply
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hash-table-clone)
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(import (guile) (rnrs) (ice-9 regex) (ice-9 session)))
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(define (non-list? x) (not (list? x)))
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(define (string-sub str p1 p2)
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(regexp-substitute/global #f p1 str 'pre p2 'post))
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(define *eof* (call-with-input-string "" read))
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(define (string->keyword str)
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(when (not (string? str))
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(throw 'mal-error (format #f "string->keyword: '~a' is not a string" str)))
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(string-append "\u029e" str))
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(define (_keyword? k)
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(and (string? k) (if (string-match "^\u029e" k) #t #f)))
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(define nil 'nil)
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(define (_nil? obj) (eq? nil obj))
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(define (cond-true? obj)
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(and (not (_nil? obj)) obj))
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(define-record-type atom (fields (mutable val)))
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(define-record-type callable
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(fields
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(mutable is_macro)
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closure))
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(define (make-func closure) (make-callable #f closure))
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(define (callable-apply c arglst)
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(define closure (callable-closure c))
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;;(format #t "ZZZ: ~a~%" `(apply ,closure ,arglst))
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(apply closure arglst))
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(define (callable-check c b)
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(and (callable? c)
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(eq? (callable-is_macro c) b)
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c))
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(define (is-func? c) (callable-check c #f))
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(define (is-macro? c) (callable-check c #t))
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(define (hash-table-clone ht)
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(define cht (make-hash-table))
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(hash-for-each (lambda (k v) (hash-set! cht k v)) ht)
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cht)
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