view vendor/gems/coderay-1.0.0/lib/coderay/scanners/groovy.rb @ 1082:997f6d7738f7 bug_531

In repo controller entry action, show the page for the file even if it's binary (so user still has access to history etc links). This makes it possible to use the entry action as the default when a file is clicked on

module CodeRay
module Scanners
  
  load :java
  
  # Scanner for Groovy.
  class Groovy < Java
    
    register_for :groovy
    
    # TODO: check list of keywords
    GROOVY_KEYWORDS = %w[
      as assert def in
    ]  # :nodoc:
    KEYWORDS_EXPECTING_VALUE = WordList.new.add %w[
      case instanceof new return throw typeof while as assert in
    ]  # :nodoc:
    GROOVY_MAGIC_VARIABLES = %w[ it ]  # :nodoc:
    
    IDENT_KIND = Java::IDENT_KIND.dup.
      add(GROOVY_KEYWORDS, :keyword).
      add(GROOVY_MAGIC_VARIABLES, :local_variable)  # :nodoc:
    
    ESCAPE = / [bfnrtv$\n\\'"] | x[a-fA-F0-9]{1,2} | [0-7]{1,3} /x  # :nodoc:
    UNICODE_ESCAPE =  / u[a-fA-F0-9]{4} /x  # :nodoc: no 4-byte unicode chars? U[a-fA-F0-9]{8}
    REGEXP_ESCAPE =  / [bfnrtv\n\\'"] | x[a-fA-F0-9]{1,2} | [0-7]{1,3} | \d | [bBdDsSwW\/] /x  # :nodoc:
    
    # TODO: interpretation inside ', ", /
    STRING_CONTENT_PATTERN = {
      "'" => /(?>\\[^\\'\n]+|[^\\'\n]+)+/,
      '"' => /[^\\$"\n]+/,
      "'''" => /(?>[^\\']+|'(?!''))+/,
      '"""' => /(?>[^\\$"]+|"(?!""))+/,
      '/' => /[^\\$\/\n]+/,
    }  # :nodoc:
    
  protected
    
    def scan_tokens encoder, options
      
      state = :initial
      inline_block_stack = []
      inline_block_paren_depth = nil
      string_delimiter = nil
      import_clause = class_name_follows = last_token = after_def = false
      value_expected = true
      
      until eos?
        
        case state
        
        when :initial
          
          if match = scan(/ \s+ | \\\n /x)
            encoder.text_token match, :space
            if match.index ?\n
              import_clause = after_def = false
              value_expected = true unless value_expected
            end
            next
          
          elsif match = scan(%r! // [^\n\\]* (?: \\. [^\n\\]* )* | /\* (?: .*? \*/ | .* ) !mx)
            value_expected = true
            after_def = false
            encoder.text_token match, :comment
          
          elsif bol? && match = scan(/ \#!.* /x)
            encoder.text_token match, :doctype
          
          elsif import_clause && match = scan(/ (?!as) #{IDENT} (?: \. #{IDENT} )* (?: \.\* )? /ox)
            after_def = value_expected = false
            encoder.text_token match, :include
          
          elsif match = scan(/ #{IDENT} | \[\] /ox)
            kind = IDENT_KIND[match]
            value_expected = (kind == :keyword) && KEYWORDS_EXPECTING_VALUE[match]
            if last_token == '.'
              kind = :ident
            elsif class_name_follows
              kind = :class
              class_name_follows = false
            elsif after_def && check(/\s*[({]/)
              kind = :method
              after_def = false
            elsif kind == :ident && last_token != '?' && check(/:/)
              kind = :key
            else
              class_name_follows = true if match == 'class' || (import_clause && match == 'as')
              import_clause = match == 'import'
              after_def = true if match == 'def'
            end
            encoder.text_token match, kind
          
          elsif match = scan(/;/)
            import_clause = after_def = false
            value_expected = true
            encoder.text_token match, :operator
          
          elsif match = scan(/\{/)
            class_name_follows = after_def = false
            value_expected = true
            encoder.text_token match, :operator
            if !inline_block_stack.empty?
              inline_block_paren_depth += 1
            end
          
          # TODO: ~'...', ~"..." and ~/.../ style regexps
          elsif match = scan(/ \.\.<? | \*?\.(?!\d)@? | \.& | \?:? | [,?:(\[] | -[->] | \+\+ |
              && | \|\| | \*\*=? | ==?~ | <=?>? | [-+*%^~&|>=!]=? | <<<?=? | >>>?=? /x)
            value_expected = true
            value_expected = :regexp if match == '~'
            after_def = false
            encoder.text_token match, :operator
          
          elsif match = scan(/ [)\]}] /x)
            value_expected = after_def = false
            if !inline_block_stack.empty? && match == '}'
              inline_block_paren_depth -= 1
              if inline_block_paren_depth == 0  # closing brace of inline block reached
                encoder.text_token match, :inline_delimiter
                encoder.end_group :inline
                state, string_delimiter, inline_block_paren_depth = inline_block_stack.pop
                next
              end
            end
            encoder.text_token match, :operator
          
          elsif check(/[\d.]/)
            after_def = value_expected = false
            if match = scan(/0[xX][0-9A-Fa-f]+/)
              encoder.text_token match, :hex
            elsif match = scan(/(?>0[0-7]+)(?![89.eEfF])/)
              encoder.text_token match, :octal
            elsif match = scan(/\d+[fFdD]|\d*\.\d+(?:[eE][+-]?\d+)?[fFdD]?|\d+[eE][+-]?\d+[fFdD]?/)
              encoder.text_token match, :float
            elsif match = scan(/\d+[lLgG]?/)
              encoder.text_token match, :integer
            end
            
          elsif match = scan(/'''|"""/)
            after_def = value_expected = false
            state = :multiline_string
            encoder.begin_group :string
            string_delimiter = match
            encoder.text_token match, :delimiter
            
          # TODO: record.'name' syntax
          elsif match = scan(/["']/)
            after_def = value_expected = false
            state = match == '/' ? :regexp : :string
            encoder.begin_group state
            string_delimiter = match
            encoder.text_token match, :delimiter
            
          elsif value_expected && match = scan(/\//)
            after_def = value_expected = false
            encoder.begin_group :regexp
            state = :regexp
            string_delimiter = '/'
            encoder.text_token match, :delimiter
            
          elsif match = scan(/ @ #{IDENT} /ox)
            after_def = value_expected = false
            encoder.text_token match, :annotation
            
          elsif match = scan(/\//)
            after_def = false
            value_expected = true
            encoder.text_token match, :operator
            
          else
            encoder.text_token getch, :error
            
          end
          
        when :string, :regexp, :multiline_string
          if match = scan(STRING_CONTENT_PATTERN[string_delimiter])
            encoder.text_token match, :content
            
          elsif match = scan(state == :multiline_string ? /'''|"""/ : /["'\/]/)
            encoder.text_token match, :delimiter
            if state == :regexp
              # TODO: regexp modifiers? s, m, x, i?
              modifiers = scan(/[ix]+/)
              encoder.text_token modifiers, :modifier if modifiers && !modifiers.empty?
            end
            state = :string if state == :multiline_string
            encoder.end_group state
            string_delimiter = nil
            after_def = value_expected = false
            state = :initial
            next
            
          elsif (state == :string || state == :multiline_string) &&
              (match = scan(/ \\ (?: #{ESCAPE} | #{UNICODE_ESCAPE} ) /mox))
            if string_delimiter[0] == ?' && !(match == "\\\\" || match == "\\'")
              encoder.text_token match, :content
            else
              encoder.text_token match, :char
            end
          elsif state == :regexp && match = scan(/ \\ (?: #{REGEXP_ESCAPE} | #{UNICODE_ESCAPE} ) /mox)
            encoder.text_token match, :char
            
          elsif match = scan(/ \$ #{IDENT} /mox)
            encoder.begin_group :inline
            encoder.text_token '$', :inline_delimiter
            match = match[1..-1]
            encoder.text_token match, IDENT_KIND[match]
            encoder.end_group :inline
            next
          elsif match = scan(/ \$ \{ /x)
            encoder.begin_group :inline
            encoder.text_token match, :inline_delimiter
            inline_block_stack << [state, string_delimiter, inline_block_paren_depth]
            inline_block_paren_depth = 1
            state = :initial
            next
            
          elsif match = scan(/ \$ /mx)
            encoder.text_token match, :content
            
          elsif match = scan(/ \\. /mx)
            encoder.text_token match, :content  # TODO: Shouldn't this be :error?
            
          elsif match = scan(/ \\ | \n /x)
            encoder.end_group state
            encoder.text_token match, :error
            after_def = value_expected = false
            state = :initial
            
          else
            raise_inspect "else case \" reached; %p not handled." % peek(1), encoder
            
          end
          
        else
          raise_inspect 'Unknown state', encoder
          
        end
        
        last_token = match unless [:space, :comment, :doctype].include? kind
        
      end
      
      if [:multiline_string, :string, :regexp].include? state
        encoder.end_group state
      end
      
      encoder
    end
    
  end
  
end
end