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Lang with proper scoping

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This commit is contained in:
Nathan Braswell
2020-10-11 23:24:17 -04:00
parent 844bb0f189
commit 45ecb25bb1
1 changed files with 20 additions and 26 deletions
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46
new_kraken.kp
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@@ -68,31 +68,6 @@
true
(concat (array (vapply recurse (array (idx x 0)) de)) (vapply recurse (array (slice x 1 -1)) de))))
true x))))
tiny_grammar (array
(array (quote WS) (array "( | |
|(;[ -~]*
))+") (lambda (x) nil))
(array (quote start_symbol) (array (quote WS) * "only_str" (quote WS) *) (lambda (_ _ _) 1337))
)
standard_grammar (array
(array (quote WS) (array "( | |
|(;[ -~]*
))+") (lambda (x) nil))
(array (quote atom) (array "-?[0-9]+") (lambda (x) (read-string x)))
(array (quote atom) (array "\"([#-[]| |[]-~]|(\\\\)|(\\n)|(\\t)|(\\\\*)|(\\0)|
|[ -!]|(\\\\\"))*\"") (lambda (x) (read-string x)))
(array (quote atom) (array "-|(([a-z]|[A-Z]|_|\\*|/|\\?|\\+|!|=|&|<|>|%)([a-z]|[A-Z]|_|[0-9]|\\*|\\?|\\+|-|!|=|&|<|>|%)*)") (lambda (x) (cond (= "true" x) true
(= "false" x) false
(= "nil" x) nil
true (read-string x))))
(array (quote form) (array (quote atom)) (lambda (x) x))
(array (quote form) (array "\\(" (quote WS) * "\\)" ) (lambda (_ _ _) (array)))
(array (quote form) (array "\\(" (quote WS) * (quote form) (array (quote WS) + (quote form)) * (quote WS) * "\\)" ) (lambda (_ _ head tail _ _) (concat (array head) (map (lambda (x) (idx x 1)) tail))))
(array (quote start_symbol) (array (quote WS) * (quote form) (quote WS) *) (lambda (_ f _) f))
(array (quote start_symbol) (array (quote WS) * "#lang" (quote WS) * (quote form) "[ -~]*") (lambda (_ _ _ gram source) (read-string source (eval gram) (quote start_symbol))))
)
rep (vY (lambda (recurse) (wrap (vau de () (do (println (eval (read-string (get_line "> ") standard_grammar (quote start_symbol)) de))
(eval (array recurse) de))))))
print_through (lambda (x) (do (println x) x))
provide (vau de (& items) (array let
(flat_map (lambda (item) (array item (array quote (eval item de)))) items)))
@@ -113,7 +88,6 @@
vY
quote
quasiquote
standard_grammar
provide
)
insert_into_scope_let (lambda (scope_let name item) (array (idx scope_let 0) (concat (idx scope_let 1) (array name item))))
@@ -123,6 +97,26 @@
(array (read-string (slurp (eval lib_path de))))) root_env))
(eval (concat imported_scope_let (array code)) de)))))
scope_let (insert_into_scope_let scope_let_sans_import (quote with_import) with_import)
standard_grammar (array
(array (quote WS) (array "( | |
|(;[ -~]*
))+") (lambda (x) nil))
(array (quote atom) (array "-?[0-9]+") (lambda (x) (read-string x)))
(array (quote atom) (array "\"([#-[]| |[]-~]|(\\\\)|(\\n)|(\\t)|(\\\\*)|(\\0)|
|[ -!]|(\\\\\"))*\"") (lambda (x) (read-string x)))
(array (quote atom) (array "-|(([a-z]|[A-Z]|_|\\*|/|\\?|\\+|!|=|&|<|>|%)([a-z]|[A-Z]|_|[0-9]|\\*|\\?|\\+|-|!|=|&|<|>|%)*)") (lambda (x) (cond (= "true" x) true
(= "false" x) false
(= "nil" x) nil
true (read-string x))))
(array (quote form) (array (quote atom)) (lambda (x) x))
(array (quote form) (array "\\(" (quote WS) * "\\)" ) (lambda (_ _ _) (array)))
(array (quote form) (array "\\(" (quote WS) * (quote form) (array (quote WS) + (quote form)) * (quote WS) * "\\)" ) (lambda (_ _ head tail _ _) (concat (array head) (map (lambda (x) (idx x 1)) tail))))
(array (quote start_symbol) (array (quote WS) * (quote form) (quote WS) *) (lambda (_ f _) f))
(array (quote start_symbol) (array (quote WS) * "#lang" (quote WS) * (quote form) "[ -~]*") (lambda (_ _ _ gram source) (read-string source (eval (concat scope_let (array gram)) root_env) (quote start_symbol))))
)
rep (vY (lambda (recurse) (wrap (vau de () (do (println (eval (read-string (get_line "> ") standard_grammar (quote start_symbol)) de))
(eval (array recurse) de))))))
)
(do