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79 lines
2.0 KiB
Plaintext
79 lines
2.0 KiB
Plaintext
(defdynamic cond-internal [xs]
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(if (= (count xs) 0)
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(list)
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(if (= (count xs) 2)
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(list)
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(if (= (count xs) 1)
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(car xs)
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(list
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'if
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(car xs)
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(car (cdr xs))
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(cond-internal (cdr (cdr xs))))))))
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(defmacro cond [:rest xs]
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(cond-internal xs))
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(defmacro for [settings body] ;; settings = variable, from, to, <step>
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(list
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'let
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(array (car settings) (car (cdr settings)))
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(list
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'while
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(list 'Int.< (car settings) (car (cdr (cdr settings))))
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(list 'do
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body
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(list
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'set! (list 'ref (car settings))
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(list 'Int.+
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(car settings)
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(if (= 4 (count settings)) ;; optional arg for step
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(car (cdr (cdr (cdr settings))))
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1)))))))
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(defmacro refstr [x]
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(list 'ref
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(list 'str x)))
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(defmacro foreach [f xs]
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(list 'for ['i 0 (list 'count (list 'ref xs))]
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(list f (list 'nth (list 'ref xs) 'i))))
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(defdynamic thread-first-internal [xs]
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(if (= (count xs) 2)
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(if (list? (last xs))
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(cons (car (car (cdr xs)))
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(cons (car xs)
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(cdr (car (cdr xs)))))
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(list (car (cdr xs)) (car xs)))
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(if (list? (last xs))
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(append
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(list
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(car (last xs))
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(thread-first-internal (init xs)))
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(cdr (last xs)))
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(list (last xs) (thread-first-internal (init xs))))))
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(defdynamic thread-last-internal [xs]
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(if (= (count xs) 2)
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(if (list? (last xs))
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(cons-last (car xs) (last xs))
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(list (car (cdr xs)) (car xs)))
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(if (list? (last xs))
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(cons-last (thread-last-internal (init xs)) (last xs))
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(list (last xs) (thread-last-internal (init xs))))))
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(defmacro => [:rest forms]
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(thread-first-internal forms))
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(defmacro ==> [:rest forms]
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(thread-last-internal forms))
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(defmacro swap! [x y]
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(list 'let (array 'tmp y) (list 'do (list 'set! &y x) (list 'set! &x 'tmp))))
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(defdynamic mac-only [:rest forms]
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(if (= "darwin" (os))
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forms
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()))
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