552 lines
30 KiB
Common Lisp
552 lines
30 KiB
Common Lisp
;;;
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;;; JavaScript 2.0 lexer
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;;;
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;;; Waldemar Horwat (waldemar@acm.org)
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;;;
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(progn
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(defparameter *lw*
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(generate-world
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"L"
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'((lexer code-lexer
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:lalr-1
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:$next-token
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((:unicode-character (% every (:text "Any Unicode character")) () t)
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(:unicode-initial-alphabetic
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(% initial-alpha (:text "Any Unicode initial alphabetic character (includes ASCII "
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(:character-literal #\A) :nbhy (:character-literal #\Z) " and "
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(:character-literal #\a) :nbhy (:character-literal #\z) ")"))
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() t)
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(:unicode-alphanumeric
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(% alphanumeric (:text "Any Unicode alphabetic or decimal digit character (includes ASCII "
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(:character-literal #\0) :nbhy (:character-literal #\9) ", "
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(:character-literal #\A) :nbhy (:character-literal #\Z) ", and "
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(:character-literal #\a) :nbhy (:character-literal #\z) ")"))
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() t)
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(:white-space-character (++ (#?0009 #?000B #?000C #\space #?00A0)
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(#?2000 #?2001 #?2002 #?2003 #?2004 #?2005 #?2006 #?2007)
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(#?2008 #?2009 #?200A #?200B)
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(#?3000)) ())
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(:line-terminator (#?000A #?000D #?2028 #?2029) ())
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(:non-terminator (- :unicode-character :line-terminator)
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(($default-action $default-action)))
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(:non-terminator-or-slash (- :non-terminator (#\/)) ())
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(:non-terminator-or-asterisk-or-slash (- :non-terminator (#\* #\/)) ())
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(:ordinary-initial-identifier-character (+ :unicode-initial-alphabetic (#\$ #\_))
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(($default-action $default-action)))
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(:ordinary-continuing-identifier-character (+ :unicode-alphanumeric (#\$ #\_))
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(($default-action $default-action)))
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(:a-s-c-i-i-digit (#\0 #\1 #\2 #\3 #\4 #\5 #\6 #\7 #\8 #\9)
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(($default-action $default-action)
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(decimal-value $digit-value)))
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(:non-zero-digit (#\1 #\2 #\3 #\4 #\5 #\6 #\7 #\8 #\9)
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((decimal-value $digit-value)))
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(:hex-digit (#\0 #\1 #\2 #\3 #\4 #\5 #\6 #\7 #\8 #\9 #\A #\B #\C #\D #\E #\F #\a #\b #\c #\d #\e #\f)
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((hex-value $digit-value)))
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(:letter-e (#\E #\e) (($default-action $default-action)))
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(:letter-x (#\X #\x) (($default-action $default-action)))
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((:literal-string-char single) (- :unicode-character (+ (#\' #\\) :line-terminator))
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(($default-action $default-action)))
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((:literal-string-char double) (- :unicode-character (+ (#\" #\\) :line-terminator))
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(($default-action $default-action)))
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(:identity-escape (- :non-terminator :unicode-alphanumeric)
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(($default-action $default-action)))
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(:ordinary-reg-exp-char (- :non-terminator (#\\ #\/))
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(($default-action $default-action))))
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(($default-action character nil identity)
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($digit-value integer digit-value digit-char-36)))
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(rule :$next-token
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((token token))
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(production :$next-token ($unit (:next-token unit)) $next-token-unit
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(token (token :next-token)))
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(production :$next-token ($re (:next-token re)) $next-token-re
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(token (token :next-token)))
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(production :$next-token ($non-re (:next-token div)) $next-token-non-re
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(token (token :next-token))))
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(%text nil "The start symbols are: "
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(:grammar-symbol (:next-token unit)) " if the previous token was a number; "
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(:grammar-symbol (:next-token re)) " if the previous token was not a number and a "
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(:character-literal #\/) " should be interpreted as a regular expression; and "
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(:grammar-symbol (:next-token div)) " if the previous token was not a number and a "
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(:character-literal #\/) " should be interpreted as a division or division-assignment operator.")
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(deftype semantic-exception (oneof syntax-error))
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(%section "Unicode Character Classes")
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(%charclass :unicode-character)
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(%charclass :unicode-initial-alphabetic)
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(%charclass :unicode-alphanumeric)
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(%charclass :white-space-character)
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(%charclass :line-terminator)
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(%charclass :a-s-c-i-i-digit)
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(%print-actions)
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(%section "Comments")
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(production :line-comment (#\/ #\/ :line-comment-characters) line-comment)
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(production :line-comment-characters () line-comment-characters-empty)
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(production :line-comment-characters (:line-comment-characters :non-terminator) line-comment-characters-chars)
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(%charclass :non-terminator)
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(production :single-line-block-comment (#\/ #\* :block-comment-characters #\* #\/) single-line-block-comment)
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(production :block-comment-characters () block-comment-characters-empty)
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(production :block-comment-characters (:block-comment-characters :non-terminator-or-slash) block-comment-characters-chars)
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(production :block-comment-characters (:pre-slash-characters #\/) block-comment-characters-slash)
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(production :pre-slash-characters () pre-slash-characters-empty)
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(production :pre-slash-characters (:block-comment-characters :non-terminator-or-asterisk-or-slash) pre-slash-characters-chars)
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(production :pre-slash-characters (:pre-slash-characters #\/) pre-slash-characters-slash)
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(%charclass :non-terminator-or-slash)
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(%charclass :non-terminator-or-asterisk-or-slash)
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(production :multi-line-block-comment (#\/ #\* :multi-line-block-comment-characters :block-comment-characters #\* #\/) multi-line-block-comment)
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(production :multi-line-block-comment-characters (:block-comment-characters :line-terminator) multi-line-block-comment-characters-first)
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(production :multi-line-block-comment-characters (:multi-line-block-comment-characters :block-comment-characters :line-terminator)
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multi-line-block-comment-characters-rest)
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(%print-actions)
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(%section "White space")
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(production :white-space () white-space-empty)
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(production :white-space (:white-space :white-space-character) white-space-character)
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(production :white-space (:white-space :single-line-block-comment) white-space-single-line-block-comment)
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(%section "Line breaks")
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(production :line-break (:line-terminator) line-break-line-terminator)
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(production :line-break (:line-comment :line-terminator) line-break-line-comment)
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(production :line-break (:multi-line-block-comment) line-break-multi-line-block-comment)
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(production :line-breaks (:line-break) line-breaks-first)
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(production :line-breaks (:line-breaks :white-space :line-break) line-breaks-rest)
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(%section "Tokens")
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(grammar-argument :tau re div unit)
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(grammar-argument :tau_2 re div)
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(rule (:next-token :tau)
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((token token))
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(production (:next-token re) (:white-space (:token re)) next-token-re
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(token (token :token)))
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(production (:next-token div) (:white-space (:token div)) next-token-div
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(token (token :token)))
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(production (:next-token unit) ((:- :ordinary-continuing-identifier-character #\\) :white-space (:token div)) next-token-unit-normal
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(token (token :token)))
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(production (:next-token unit) ((:- #\_) :identifier-name) next-token-unit-name
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(token (oneof string (name :identifier-name))))
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(production (:next-token unit) (#\_ :identifier-name) next-token-unit-underscore-name
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(token (oneof string (name :identifier-name)))))
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(%print-actions)
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(rule (:token :tau_2)
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((token token))
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(production (:token :tau_2) (:line-breaks) token-line-breaks
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(token (oneof line-break)))
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(production (:token :tau_2) (:identifier-or-reserved-word) token-identifier-or-reserved-word
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(token (token :identifier-or-reserved-word)))
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(production (:token :tau_2) (:punctuator) token-punctuator
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(token (oneof punctuator (punctuator :punctuator))))
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(production (:token div) (:division-punctuator) token-division-punctuator
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(token (oneof punctuator (punctuator :division-punctuator))))
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(production (:token :tau_2) (:numeric-literal) token-numeric-literal
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(token (oneof number (double-value :numeric-literal))))
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(production (:token :tau_2) (:string-literal) token-string-literal
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(token (oneof string (string-value :string-literal))))
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(production (:token re) (:reg-exp-literal) token-reg-exp-literal
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(token (oneof regular-expression (r-e-value :reg-exp-literal))))
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(production (:token :tau_2) (:end-of-input) token-end
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(token (oneof end))))
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(production :end-of-input ($end) end-of-input-end)
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(production :end-of-input (:line-comment $end) end-of-input-line-comment)
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(deftype reg-exp (tuple (re-body string)
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(re-flags string)))
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(deftype quantity (tuple (amount double)
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(unit string)))
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(deftype token (oneof line-break
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(identifier string)
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(keyword string)
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(punctuator string)
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(number double)
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(string string)
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(regular-expression reg-exp)
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end))
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(%print-actions)
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(%section "Keywords and identifiers")
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(rule :identifier-name
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((name string) (contains-escapes boolean))
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(production :identifier-name (:initial-identifier-character) identifier-name-initial
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(name (vector (character-value :initial-identifier-character)))
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(contains-escapes (contains-escapes :initial-identifier-character)))
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(production :identifier-name (:identifier-name :continuing-identifier-character) identifier-name-continuing
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(name (append (name :identifier-name) (vector (character-value :continuing-identifier-character))))
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(contains-escapes (or (contains-escapes :identifier-name)
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(contains-escapes :continuing-identifier-character)))))
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(rule :initial-identifier-character
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((character-value character) (contains-escapes boolean))
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(production :initial-identifier-character (:ordinary-initial-identifier-character) initial-identifier-character-ordinary
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(character-value ($default-action :ordinary-initial-identifier-character))
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(contains-escapes false))
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(production :initial-identifier-character (#\\ :hex-escape) initial-identifier-character-escape
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(character-value (if (is-ordinary-initial-identifier-character (character-value :hex-escape))
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(character-value :hex-escape)
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(throw (oneof syntax-error))))
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(contains-escapes true)))
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(%charclass :ordinary-initial-identifier-character)
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(rule :continuing-identifier-character
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((character-value character) (contains-escapes boolean))
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(production :continuing-identifier-character (:ordinary-continuing-identifier-character) continuing-identifier-character-ordinary
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(character-value ($default-action :ordinary-continuing-identifier-character))
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(contains-escapes false))
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(production :continuing-identifier-character (#\\ :hex-escape) continuing-identifier-character-escape
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(character-value (if (is-ordinary-continuing-identifier-character (character-value :hex-escape))
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(character-value :hex-escape)
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(throw (oneof syntax-error))))
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(contains-escapes true)))
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(%charclass :ordinary-continuing-identifier-character)
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(%print-actions)
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(define reserved-words (vector string)
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(vector "abstract" "break" "case" "catch" "class" "const" "continue" "debugger" "default" "delete" "do" "else" "enum"
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"eval" "export" "extends" "false" "final" "finally" "for" "function" "goto" "if" "implements" "import" "in"
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"instanceof" "native" "new" "null" "package" "private" "protected" "public" "return" "static" "super" "switch" "synchronized"
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"this" "throw" "throws" "transient" "true" "try" "typeof" "var" "volatile" "while" "with"))
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(define non-reserved-words (vector string)
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(vector "box" "constructor" "field" "get" "language" "local" "method" "override" "set" "version"))
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(define keywords (vector string)
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(append reserved-words non-reserved-words))
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(define (member (id string) (list (vector string))) boolean
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(if (empty list)
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false
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(if (string-equal id (nth list 0))
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true
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(member id (subseq list 1)))))
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(rule :identifier-or-reserved-word
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((token token))
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(production :identifier-or-reserved-word (:identifier-name) identifier-or-reserved-word-identifier-name
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(token (let ((id string (name :identifier-name)))
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(if (and (member id keywords) (not (contains-escapes :identifier-name)))
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(oneof keyword id)
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(oneof identifier id))))))
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(%print-actions)
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(%section "Punctuators")
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(rule :punctuator ((punctuator string))
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(production :punctuator (#\!) punctuator-not (punctuator "!"))
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(production :punctuator (#\! #\=) punctuator-not-equal (punctuator "!="))
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(production :punctuator (#\! #\= #\=) punctuator-not-identical (punctuator "!=="))
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(production :punctuator (#\#) punctuator-hash (punctuator "#"))
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(production :punctuator (#\%) punctuator-modulo (punctuator "%"))
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(production :punctuator (#\% #\=) punctuator-modulo-equals (punctuator "%="))
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(production :punctuator (#\&) punctuator-and (punctuator "&"))
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(production :punctuator (#\& #\&) punctuator-logical-and (punctuator "&&"))
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(production :punctuator (#\& #\& #\=) punctuator-logical-and-equals (punctuator "&&="))
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(production :punctuator (#\& #\=) punctuator-and-equals (punctuator "&="))
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(production :punctuator (#\() punctuator-open-parenthesis (punctuator "("))
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(production :punctuator (#\)) punctuator-close-parenthesis (punctuator ")"))
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(production :punctuator (#\*) punctuator-times (punctuator "*"))
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(production :punctuator (#\* #\=) punctuator-times-equals (punctuator "*="))
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(production :punctuator (#\+) punctuator-plus (punctuator "+"))
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(production :punctuator (#\+ #\+) punctuator-increment (punctuator "++"))
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(production :punctuator (#\+ #\=) punctuator-plus-equals (punctuator "+="))
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(production :punctuator (#\,) punctuator-comma (punctuator ","))
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(production :punctuator (#\-) punctuator-minus (punctuator "-"))
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(production :punctuator (#\- #\-) punctuator-decrement (punctuator "--"))
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(production :punctuator (#\- #\=) punctuator-minus-equals (punctuator "-="))
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(production :punctuator (#\- #\>) punctuator-arrow (punctuator "->"))
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(production :punctuator (#\.) punctuator-dot (punctuator "."))
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(production :punctuator (#\. #\.) punctuator-double-dot (punctuator ".."))
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(production :punctuator (#\. #\. #\.) punctuator-triple-dot (punctuator "..."))
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(production :punctuator (#\:) punctuator-colon (punctuator ":"))
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(production :punctuator (#\: #\:) punctuator-namespace (punctuator "::"))
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(production :punctuator (#\;) punctuator-semicolon (punctuator ";"))
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(production :punctuator (#\<) punctuator-less-than (punctuator "<"))
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(production :punctuator (#\< #\<) punctuator-left-shift (punctuator "<<"))
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(production :punctuator (#\< #\< #\=) punctuator-left-shift-equals (punctuator "<<="))
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(production :punctuator (#\< #\=) punctuator-less-than-or-equal (punctuator "<="))
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(production :punctuator (#\=) punctuator-assignment (punctuator "="))
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(production :punctuator (#\= #\=) punctuator-equal (punctuator "=="))
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(production :punctuator (#\= #\= #\=) punctuator-identical (punctuator "==="))
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(production :punctuator (#\>) punctuator-greater-than (punctuator ">"))
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(production :punctuator (#\> #\=) punctuator-greater-than-or-equal (punctuator ">="))
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(production :punctuator (#\> #\>) punctuator-right-shift (punctuator ">>"))
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(production :punctuator (#\> #\> #\=) punctuator-right-shift-equals (punctuator ">>="))
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(production :punctuator (#\> #\> #\>) punctuator-logical-right-shift (punctuator ">>>"))
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(production :punctuator (#\> #\> #\> #\=) punctuator-logical-right-shift-equals (punctuator ">>>="))
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(production :punctuator (#\?) punctuator-question (punctuator "?"))
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(production :punctuator (#\@) punctuator-at (punctuator "@"))
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(production :punctuator (#\[) punctuator-open-bracket (punctuator "["))
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(production :punctuator (#\]) punctuator-close-bracket (punctuator "]"))
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(production :punctuator (#\^) punctuator-xor (punctuator "^"))
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(production :punctuator (#\^ #\=) punctuator-xor-equals (punctuator "^="))
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(production :punctuator (#\^ #\^) punctuator-logical-xor (punctuator "^^"))
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(production :punctuator (#\^ #\^ #\=) punctuator-logical-xor-equals (punctuator "^^="))
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(production :punctuator (#\{) punctuator-open-brace (punctuator "{"))
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(production :punctuator (#\|) punctuator-or (punctuator "|"))
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(production :punctuator (#\| #\=) punctuator-or-equals (punctuator "|="))
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(production :punctuator (#\| #\|) punctuator-logical-or (punctuator "||"))
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(production :punctuator (#\| #\| #\=) punctuator-logical-or-equals (punctuator "||="))
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(production :punctuator (#\}) punctuator-close-brace (punctuator "}"))
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(production :punctuator (#\~) punctuator-complement (punctuator "~")))
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(rule :division-punctuator ((punctuator string))
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(production :division-punctuator (#\/ (:- #\/ #\*)) punctuator-divide (punctuator "/"))
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(production :division-punctuator (#\/ #\=) punctuator-divide-equals (punctuator "/=")))
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(%print-actions)
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(%section "Numeric literals")
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(rule :numeric-literal ((double-value double))
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(production :numeric-literal (:decimal-literal) numeric-literal-decimal
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(double-value (rational-to-double (rational-value :decimal-literal))))
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(production :numeric-literal (:hex-integer-literal (:- :hex-digit)) numeric-literal-hex
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(double-value (rational-to-double (integer-value :hex-integer-literal)))))
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(%print-actions)
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(define (expt (base rational) (exponent integer)) rational
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(if (= exponent 0)
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1
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(if (< exponent 0)
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(rational/ 1 (expt base (neg exponent)))
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(rational* base (expt base (- exponent 1))))))
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(rule :decimal-literal ((rational-value rational))
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(production :decimal-literal (:mantissa) decimal-literal
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(rational-value (rational-value :mantissa)))
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(production :decimal-literal (:mantissa :letter-e :signed-integer) decimal-literal-exponent
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(rational-value (rational* (rational-value :mantissa) (expt 10 (integer-value :signed-integer))))))
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(%charclass :letter-e)
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(rule :mantissa ((rational-value rational))
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(production :mantissa (:decimal-integer-literal) mantissa-integer
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(rational-value (integer-value :decimal-integer-literal)))
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(production :mantissa (:decimal-integer-literal #\.) mantissa-integer-dot
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(rational-value (integer-value :decimal-integer-literal)))
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(production :mantissa (:decimal-integer-literal #\. :fraction) mantissa-integer-dot-fraction
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(rational-value (rational+ (integer-value :decimal-integer-literal)
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(rational-value :fraction))))
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(production :mantissa (#\. :fraction) mantissa-dot-fraction
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(rational-value (rational-value :fraction))))
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(rule :decimal-integer-literal ((integer-value integer))
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(production :decimal-integer-literal (#\0) decimal-integer-literal-0
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(integer-value 0))
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(production :decimal-integer-literal (:non-zero-decimal-digits) decimal-integer-literal-nonzero
|
|
(integer-value (integer-value :non-zero-decimal-digits))))
|
|
|
|
(rule :non-zero-decimal-digits ((integer-value integer))
|
|
(production :non-zero-decimal-digits (:non-zero-digit) non-zero-decimal-digits-first
|
|
(integer-value (decimal-value :non-zero-digit)))
|
|
(production :non-zero-decimal-digits (:non-zero-decimal-digits :a-s-c-i-i-digit) non-zero-decimal-digits-rest
|
|
(integer-value (+ (* 10 (integer-value :non-zero-decimal-digits)) (decimal-value :a-s-c-i-i-digit)))))
|
|
|
|
(%charclass :non-zero-digit)
|
|
|
|
(rule :fraction ((rational-value rational))
|
|
(production :fraction (:decimal-digits) fraction-decimal-digits
|
|
(rational-value (rational/ (integer-value :decimal-digits)
|
|
(expt 10 (n-digits :decimal-digits))))))
|
|
(%print-actions)
|
|
|
|
(rule :signed-integer ((integer-value integer))
|
|
(production :signed-integer (:decimal-digits) signed-integer-no-sign
|
|
(integer-value (integer-value :decimal-digits)))
|
|
(production :signed-integer (#\+ :decimal-digits) signed-integer-plus
|
|
(integer-value (integer-value :decimal-digits)))
|
|
(production :signed-integer (#\- :decimal-digits) signed-integer-minus
|
|
(integer-value (neg (integer-value :decimal-digits)))))
|
|
(%print-actions)
|
|
|
|
(rule :decimal-digits
|
|
((integer-value integer) (n-digits integer))
|
|
(production :decimal-digits (:a-s-c-i-i-digit) decimal-digits-first
|
|
(integer-value (decimal-value :a-s-c-i-i-digit))
|
|
(n-digits 1))
|
|
(production :decimal-digits (:decimal-digits :a-s-c-i-i-digit) decimal-digits-rest
|
|
(integer-value (+ (* 10 (integer-value :decimal-digits)) (decimal-value :a-s-c-i-i-digit)))
|
|
(n-digits (+ (n-digits :decimal-digits) 1))))
|
|
(%print-actions)
|
|
|
|
(rule :hex-integer-literal ((integer-value integer))
|
|
(production :hex-integer-literal (#\0 :letter-x :hex-digit) hex-integer-literal-first
|
|
(integer-value (hex-value :hex-digit)))
|
|
(production :hex-integer-literal (:hex-integer-literal :hex-digit) hex-integer-literal-rest
|
|
(integer-value (+ (* 16 (integer-value :hex-integer-literal)) (hex-value :hex-digit)))))
|
|
(%charclass :letter-x)
|
|
(%charclass :hex-digit)
|
|
(%print-actions)
|
|
|
|
(%section "String literals")
|
|
|
|
(grammar-argument :theta single double)
|
|
(rule :string-literal ((string-value string))
|
|
(production :string-literal (#\' (:string-chars single) #\') string-literal-single
|
|
(string-value (string-value :string-chars)))
|
|
(production :string-literal (#\" (:string-chars double) #\") string-literal-double
|
|
(string-value (string-value :string-chars))))
|
|
(%print-actions)
|
|
|
|
(rule (:string-chars :theta) ((string-value string))
|
|
(production (:string-chars :theta) () string-chars-none
|
|
(string-value ""))
|
|
(production (:string-chars :theta) ((:string-chars :theta) (:string-char :theta)) string-chars-some
|
|
(string-value (append (string-value :string-chars)
|
|
(vector (character-value :string-char))))))
|
|
|
|
(rule (:string-char :theta) ((character-value character))
|
|
(production (:string-char :theta) ((:literal-string-char :theta)) string-char-literal
|
|
(character-value ($default-action :literal-string-char)))
|
|
(production (:string-char :theta) (#\\ :string-escape) string-char-escape
|
|
(character-value (character-value :string-escape))))
|
|
|
|
(%charclass (:literal-string-char single))
|
|
(%charclass (:literal-string-char double))
|
|
(%print-actions)
|
|
|
|
(rule :string-escape ((character-value character))
|
|
(production :string-escape (:control-escape) string-escape-control
|
|
(character-value (character-value :control-escape)))
|
|
(production :string-escape (:zero-escape) string-escape-zero
|
|
(character-value (character-value :zero-escape)))
|
|
(production :string-escape (:hex-escape) string-escape-hex
|
|
(character-value (character-value :hex-escape)))
|
|
(production :string-escape (:identity-escape) string-escape-non-escape
|
|
(character-value ($default-action :identity-escape))))
|
|
(%charclass :identity-escape)
|
|
(%print-actions)
|
|
|
|
(rule :control-escape ((character-value character))
|
|
(production :control-escape (#\b) control-escape-backspace (character-value #?0008))
|
|
(production :control-escape (#\f) control-escape-form-feed (character-value #?000C))
|
|
(production :control-escape (#\n) control-escape-new-line (character-value #?000A))
|
|
(production :control-escape (#\r) control-escape-return (character-value #?000D))
|
|
(production :control-escape (#\t) control-escape-tab (character-value #?0009))
|
|
(production :control-escape (#\v) control-escape-vertical-tab (character-value #?000B)))
|
|
(%print-actions)
|
|
|
|
(rule :zero-escape ((character-value character))
|
|
(production :zero-escape (#\0 (:- :a-s-c-i-i-digit)) zero-escape-zero
|
|
(character-value #?0000)))
|
|
(%print-actions)
|
|
|
|
(rule :hex-escape ((character-value character))
|
|
(production :hex-escape (#\x :hex-digit :hex-digit) hex-escape-2
|
|
(character-value (code-to-character (+ (* 16 (hex-value :hex-digit 1))
|
|
(hex-value :hex-digit 2)))))
|
|
(production :hex-escape (#\u :hex-digit :hex-digit :hex-digit :hex-digit) hex-escape-4
|
|
(character-value (code-to-character (+ (+ (+ (* 4096 (hex-value :hex-digit 1))
|
|
(* 256 (hex-value :hex-digit 2)))
|
|
(* 16 (hex-value :hex-digit 3)))
|
|
(hex-value :hex-digit 4))))))
|
|
(%print-actions)
|
|
|
|
(%section "Regular expression literals")
|
|
|
|
(rule :reg-exp-literal ((r-e-value reg-exp))
|
|
(production :reg-exp-literal (:reg-exp-body :reg-exp-flags) reg-exp-literal
|
|
(r-e-value (tuple reg-exp (r-e-body :reg-exp-body) (r-e-flags :reg-exp-flags)))))
|
|
|
|
(rule :reg-exp-flags ((r-e-flags string))
|
|
(production :reg-exp-flags () reg-exp-flags-none
|
|
(r-e-flags ""))
|
|
(production :reg-exp-flags (:reg-exp-flags :continuing-identifier-character) reg-exp-flags-more
|
|
(r-e-flags (append (r-e-flags :reg-exp-flags) (vector (character-value :continuing-identifier-character))))))
|
|
|
|
(rule :reg-exp-body ((r-e-body string))
|
|
(production :reg-exp-body (#\/ (:- #\*) :reg-exp-chars #\/) reg-exp-body
|
|
(r-e-body (r-e-body :reg-exp-chars))))
|
|
|
|
(rule :reg-exp-chars ((r-e-body string))
|
|
(production :reg-exp-chars (:reg-exp-char) reg-exp-chars-one
|
|
(r-e-body (r-e-body :reg-exp-char)))
|
|
(production :reg-exp-chars (:reg-exp-chars :reg-exp-char) reg-exp-chars-more
|
|
(r-e-body (append (r-e-body :reg-exp-chars)
|
|
(r-e-body :reg-exp-char)))))
|
|
|
|
(rule :reg-exp-char ((r-e-body string))
|
|
(production :reg-exp-char (:ordinary-reg-exp-char) reg-exp-char-ordinary
|
|
(r-e-body (vector ($default-action :ordinary-reg-exp-char))))
|
|
(production :reg-exp-char (#\\ :non-terminator) reg-exp-char-escape
|
|
(r-e-body (vector #\\ ($default-action :non-terminator)))))
|
|
|
|
(%charclass :ordinary-reg-exp-char)
|
|
)))
|
|
|
|
(defparameter *ll* (world-lexer *lw* 'code-lexer))
|
|
(defparameter *lg* (lexer-grammar *ll*))
|
|
(set-up-lexer-metagrammar *ll*)
|
|
(defparameter *lm* (lexer-metagrammar *ll*)))
|
|
|
|
|
|
#|
|
|
(depict-rtf-to-local-file
|
|
"JS20/LexerCharClasses.rtf"
|
|
"JavaScript 2 Lexer Character Classes"
|
|
#'(lambda (rtf-stream)
|
|
(depict-paragraph (rtf-stream ':grammar-header)
|
|
(depict rtf-stream "Character Classes"))
|
|
(dolist (charclass (lexer-charclasses *ll*))
|
|
(depict-charclass rtf-stream charclass))
|
|
(depict-paragraph (rtf-stream ':grammar-header)
|
|
(depict rtf-stream "Grammar"))
|
|
(depict-grammar rtf-stream *lg*)))
|
|
|
|
(progn
|
|
(depict-rtf-to-local-file
|
|
"JS20/LexerGrammar.rtf"
|
|
"JavaScript 2 Lexer Grammar"
|
|
#'(lambda (rtf-stream)
|
|
(depict-world-commands rtf-stream *lw* :visible-semantics nil)))
|
|
(depict-rtf-to-local-file
|
|
"JS20/LexerSemantics.rtf"
|
|
"JavaScript 2 Lexer Semantics"
|
|
#'(lambda (rtf-stream)
|
|
(depict-world-commands rtf-stream *lw*))))
|
|
|
|
(progn
|
|
(depict-html-to-local-file
|
|
"JS20/LexerGrammar.html"
|
|
"JavaScript 2 Lexer Grammar"
|
|
t
|
|
#'(lambda (rtf-stream)
|
|
(depict-world-commands rtf-stream *lw* :visible-semantics nil))
|
|
:external-link-base "notation.html")
|
|
(depict-html-to-local-file
|
|
"JS20/LexerSemantics.html"
|
|
"JavaScript 2 Lexer Semantics"
|
|
t
|
|
#'(lambda (rtf-stream)
|
|
(depict-world-commands rtf-stream *lw*))
|
|
:external-link-base "notation.html"))
|
|
|
|
(with-local-output (s "JS20/LexerGrammar.txt") (print-lexer *ll* s) (print-grammar *lg* s))
|
|
|
|
(print-illegal-strings m)
|
|
|#
|
|
|
|
|
|
#+allegro (clean-grammar *lg*) ;Remove this line if you wish to print the grammar's state tables.
|
|
(length (grammar-states *lg*))
|