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Diffstat (limited to 'lib/coderay/scanners/scheme.rb')
| -rw-r--r-- | lib/coderay/scanners/scheme.rb | 136 |
1 files changed, 0 insertions, 136 deletions
diff --git a/lib/coderay/scanners/scheme.rb b/lib/coderay/scanners/scheme.rb deleted file mode 100644 index 59595cd..0000000 --- a/lib/coderay/scanners/scheme.rb +++ /dev/null @@ -1,136 +0,0 @@ -module CodeRay - module Scanners - - # Scheme scanner for CodeRay (by closure). - # - # Thanks to murphy for putting CodeRay into public. - class Scheme < Scanner - - # TODO: function defs - # TODO: built-in functions - - register_for :scheme - file_extension 'scm' - - CORE_FORMS = %w[ - lambda let let* letrec syntax-case define-syntax let-syntax - letrec-syntax begin define quote if or and cond case do delay - quasiquote set! cons force call-with-current-continuation call/cc - ] # :nodoc: - - IDENT_KIND = CaseIgnoringWordList.new(:ident). - add(CORE_FORMS, :keyword) # :nodoc: - - #IDENTIFIER_INITIAL = /[a-z!@\$%&\*\/\:<=>\?~_\^]/i - #IDENTIFIER_SUBSEQUENT = /#{IDENTIFIER_INITIAL}|\d|\.|\+|-/ - #IDENTIFIER = /#{IDENTIFIER_INITIAL}#{IDENTIFIER_SUBSEQUENT}*|\+|-|\.{3}/ - IDENTIFIER = /[a-zA-Z!@$%&*\/:<=>?~_^][\w!@$%&*\/:<=>?~^.+\-]*|[+-]|\.\.\./ # :nodoc: - DIGIT = /\d/ # :nodoc: - DIGIT10 = /\d/ # :nodoc: - DIGIT16 = /[0-9a-f]/i # :nodoc: - DIGIT8 = /[0-7]/ # :nodoc: - DIGIT2 = /[01]/ # :nodoc: - RADIX16 = /\#x/i # :nodoc: - RADIX8 = /\#o/i # :nodoc: - RADIX2 = /\#b/i # :nodoc: - RADIX10 = /\#d/i # :nodoc: - EXACTNESS = /#i|#e/i # :nodoc: - SIGN = /[\+-]?/ # :nodoc: - EXP_MARK = /[esfdl]/i # :nodoc: - EXP = /#{EXP_MARK}#{SIGN}#{DIGIT}+/ # :nodoc: - SUFFIX = /#{EXP}?/ # :nodoc: - PREFIX10 = /#{RADIX10}?#{EXACTNESS}?|#{EXACTNESS}?#{RADIX10}?/ # :nodoc: - PREFIX16 = /#{RADIX16}#{EXACTNESS}?|#{EXACTNESS}?#{RADIX16}/ # :nodoc: - PREFIX8 = /#{RADIX8}#{EXACTNESS}?|#{EXACTNESS}?#{RADIX8}/ # :nodoc: - PREFIX2 = /#{RADIX2}#{EXACTNESS}?|#{EXACTNESS}?#{RADIX2}/ # :nodoc: - UINT10 = /#{DIGIT10}+#*/ # :nodoc: - UINT16 = /#{DIGIT16}+#*/ # :nodoc: - UINT8 = /#{DIGIT8}+#*/ # :nodoc: - UINT2 = /#{DIGIT2}+#*/ # :nodoc: - DECIMAL = /#{DIGIT10}+#+\.#*#{SUFFIX}|#{DIGIT10}+\.#{DIGIT10}*#*#{SUFFIX}|\.#{DIGIT10}+#*#{SUFFIX}|#{UINT10}#{EXP}/ # :nodoc: - UREAL10 = /#{UINT10}\/#{UINT10}|#{DECIMAL}|#{UINT10}/ # :nodoc: - UREAL16 = /#{UINT16}\/#{UINT16}|#{UINT16}/ # :nodoc: - UREAL8 = /#{UINT8}\/#{UINT8}|#{UINT8}/ # :nodoc: - UREAL2 = /#{UINT2}\/#{UINT2}|#{UINT2}/ # :nodoc: - REAL10 = /#{SIGN}#{UREAL10}/ # :nodoc: - REAL16 = /#{SIGN}#{UREAL16}/ # :nodoc: - REAL8 = /#{SIGN}#{UREAL8}/ # :nodoc: - REAL2 = /#{SIGN}#{UREAL2}/ # :nodoc: - IMAG10 = /i|#{UREAL10}i/ # :nodoc: - IMAG16 = /i|#{UREAL16}i/ # :nodoc: - IMAG8 = /i|#{UREAL8}i/ # :nodoc: - IMAG2 = /i|#{UREAL2}i/ # :nodoc: - COMPLEX10 = /#{REAL10}@#{REAL10}|#{REAL10}\+#{IMAG10}|#{REAL10}-#{IMAG10}|\+#{IMAG10}|-#{IMAG10}|#{REAL10}/ # :nodoc: - COMPLEX16 = /#{REAL16}@#{REAL16}|#{REAL16}\+#{IMAG16}|#{REAL16}-#{IMAG16}|\+#{IMAG16}|-#{IMAG16}|#{REAL16}/ # :nodoc: - COMPLEX8 = /#{REAL8}@#{REAL8}|#{REAL8}\+#{IMAG8}|#{REAL8}-#{IMAG8}|\+#{IMAG8}|-#{IMAG8}|#{REAL8}/ # :nodoc: - COMPLEX2 = /#{REAL2}@#{REAL2}|#{REAL2}\+#{IMAG2}|#{REAL2}-#{IMAG2}|\+#{IMAG2}|-#{IMAG2}|#{REAL2}/ # :nodoc: - NUM10 = /#{PREFIX10}?#{COMPLEX10}/ # :nodoc: - NUM16 = /#{PREFIX16}#{COMPLEX16}/ # :nodoc: - NUM8 = /#{PREFIX8}#{COMPLEX8}/ # :nodoc: - NUM2 = /#{PREFIX2}#{COMPLEX2}/ # :nodoc: - NUM = /#{NUM10}|#{NUM16}|#{NUM8}|#{NUM2}/ # :nodoc: - - protected - - def scan_tokens encoder, options - - state = :initial - ident_kind = IDENT_KIND - - until eos? - - case state - when :initial - if match = scan(/ \s+ | \\\n /x) - encoder.text_token match, :space - elsif match = scan(/['\(\[\)\]]|#\(/) - encoder.text_token match, :operator - elsif match = scan(/;.*/) - encoder.text_token match, :comment - elsif match = scan(/#\\(?:newline|space|.?)/) - encoder.text_token match, :char - elsif match = scan(/#[ft]/) - encoder.text_token match, :predefined_constant - elsif match = scan(/#{IDENTIFIER}/o) - encoder.text_token match, ident_kind[matched] - elsif match = scan(/\./) - encoder.text_token match, :operator - elsif match = scan(/"/) - encoder.begin_group :string - encoder.text_token match, :delimiter - state = :string - elsif match = scan(/#{NUM}/o) and not matched.empty? - encoder.text_token match, :integer - else - encoder.text_token getch, :error - end - - when :string - if match = scan(/[^"\\]+|\\.?/) - encoder.text_token match, :content - elsif match = scan(/"/) - encoder.text_token match, :delimiter - encoder.end_group :string - state = :initial - else - raise_inspect "else case \" reached; %p not handled." % peek(1), - encoder, state - end - - else - raise 'else case reached' - - end - - end - - if state == :string - encoder.end_group state - end - - encoder - - end - end - end -end
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