Class: Rouge::Lexers::Dafny

Inherits:
RegexLexer show all
Defined in:
lib/rouge/lexers/dafny.rb

Constant Summary

Constants inherited from RegexLexer

RegexLexer::MAX_NULL_SCANS

Constants included from Token::Tokens

Token::Tokens::Num, Token::Tokens::Str

Instance Attribute Summary

Attributes inherited from Rouge::Lexer

#options

Instance Method Summary collapse

Methods inherited from RegexLexer

append, #delegate, #goto, #group, #groups, #in_state?, #pop!, prepend, #push, #recurse, replace_state, #reset!, #reset_stack, #stack, start, start_procs, state, #state, #state?, state_definitions, states, #step, #stream_tokens, #token

Methods inherited from Rouge::Lexer

aliases, all, #as_bool, #as_lexer, #as_list, #as_string, #as_token, #bool_option, continue_lex, #continue_lex, debug_enabled?, demo, demo_file, desc, detect?, detectable?, disable_debug!, enable_debug!, filenames, find, find_fancy, guess, guess_by_filename, guess_by_mimetype, guess_by_source, guesses, #hash_option, #initialize, lex, #lex, #lexer_option, #list_option, lookup_fancy, mimetypes, option, option_docs, #reset!, #stream_tokens, #string_option, tag, #tag, title, #token_option, #with

Methods included from Token::Tokens

token

Constructor Details

This class inherits a constructor from Rouge::Lexer

Instance Method Details

#root ⇒ Object

IMPORTANT: Rules are ordered, which allows later rules to be simpler than they would otherwise be



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# File 'lib/rouge/lexers/dafny.rb', line 63

state :root do
  rule %r(/\*), Comment::Multiline, :comment
  rule %r(//.*?$), Comment::Single
  rule %r(\*/), Error          # should not have closing comment in :root
                               # is an improperly nested comment

  rule %r/'#{cchar}'/, Str::Char           # standard or escape char
  rule %r/'#{uchar}'/, Str::Char           # unicode char
  rule %r/'[^'\n\r]*'/, Error              # bad any other enclosed char
  rule %r/'[^'\n\r]*$/, Error              # bad unclosed char

  rule %r/"(?:#{schar}|#{uchar})*"/, Str::Double        # valid string
  rule %r/".*"/, Error                     # anything else that is closed
  rule %r/".*$/, Error                     # bad unclosed string

  rule %r/@"([^"]|"")*"/, Str::Other     # valid verbatim string
  rule %r/@".*/m, Error             # anything else , multiline unclosed


  rule %r/#{digits}\.#{digits}(?!#{idchar})/, Num::Float
  rule %r/0b#{bin_digits}(?!#{idchar})/, Num::Bin
  rule %r/0b#{idchar}*/, Error
  rule %r/0x#{hex_digits}(?!#{idchar})/, Num::Hex
  rule %r/0x#{idchar}*/, Error
  rule %r/#{digits}(?!#{idchar})/, Num::Integer
  rule %r/_(?!#{idchar})/, Name
  rule %r/_[0-9_]+[_]?(?!#{idchar})/, Error
  rule %r/[0-9_]+_(?!#{idchar})/, Error
  rule %r/[0-9]#{idchar}+/, Error

  rule %r/#{arrayType}/, Keyword::Type
  rule %r/#{bvType}/, Keyword::Type

  rule id do |m|
    if types.include?(m[0])
      token Keyword::Type
    elsif literals.include?(m[0])
      token Keyword::Constant
    elsif textOperators.include?(m[0])
      token Operator::Word
    elsif keywords.include?(m[0])
      token Keyword::Reserved
    else
      token Name
    end
  end

  rule %r/\.\./, Operator
  rule %r/[*!%&<>\|^+=:.\/-]/, Operator
  rule %r/[\[\](){},;`]/, Punctuation

  rule %r/[^\S\n]+/, Text
  rule %r/\n/, Text
  rule %r/./, Error # Catchall
end