зеркало из https://github.com/mozilla/gecko-dev.git
57 строки
1.5 KiB
Common Lisp
57 строки
1.5 KiB
Common Lisp
(progn
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(defparameter *tcw*
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(generate-world
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"TC"
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'((lexer throw-catch-lexer
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:lalr-1
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:main
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((:digit (#\0 #\1 #\2 #\3 #\4 #\5 #\6 #\7 #\8 #\9)
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((value $digit-value))))
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(($digit-value integer digit-value digit-char-36)))
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(%charclass :digit)
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(deftype semantic-exception integer)
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(rule :expr ((value (-> () integer)))
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(production :expr (:digit) expr-digit
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((value) (value :digit)))
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(production :expr (#\t :expr) expr-throw
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((value) (throw ((value :expr)))))
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(production :expr (#\c #\{ :expr #\} :expr) expr-catch
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((value) (catch ((value :expr 1))
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(e) (+ (* e 10) ((value :expr 2)))))))
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(rule :main ((value integer))
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(production :main (:expr) main-expr
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(value ((value :expr)))))
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(%print-actions)
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)))
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(defparameter *tcl* (world-lexer *tcw* 'throw-catch-lexer))
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(defparameter *tcg* (lexer-grammar *tcl*)))
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#|
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(depict-rtf-to-local-file
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"Test/ThrowCatchSemantics.rtf"
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"Base Example Semantics"
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#'(lambda (rtf-stream)
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(depict-world-commands rtf-stream *tcw*)))
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(depict-html-to-local-file
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"Test/ThrowCatchSemantics.html"
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"Base Example Semantics"
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t
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#'(lambda (html-stream)
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(depict-world-commands html-stream *tcw*))
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:external-link-base "")
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(lexer-pparse *tcl* "7")
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(lexer-pparse *tcl* "t3")
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(lexer-pparse *tcl* "c{t6}5")
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|#
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(length (grammar-states *tcg*))
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