Class: Parser::Source::Comment

15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117

# File 'lib/parser/source/comment.rb', line 15

class Comment
  attr_reader  :text

  attr_reader  :location
  alias_method :loc, :location

  ##
  # Associate `comments` with `ast` nodes by their corresponding node.
  #
  # @param [Parser::AST::Node] ast
  # @param [Array(Comment)]    comments
  # @return [Hash(Parser::AST::Node, Array(Comment))]
  # @see Parser::Source::Comment::Associator#associate
  # @deprecated Use {associate_locations}.
  #
  def self.associate(ast, comments)
    associator = Associator.new(ast, comments)
    associator.associate
  end

  ##
  # Associate `comments` with `ast` nodes by their location in the
  # source.
  #
  # @param [Parser::AST::Node] ast
  # @param [Array(Comment)]    comments
  # @return [Hash(Parser::Source::Map, Array(Comment))]
  # @see Parser::Source::Comment::Associator#associate_locations
  #
  def self.associate_locations(ast, comments)
    associator = Associator.new(ast, comments)
    associator.associate_locations
  end

  ##
  # @param [Parser::Source::Range] range
  #
  def initialize(range)
    @location = Parser::Source::Map.new(range)
    @text     = range.source.freeze

    freeze
  end

  ##
  # Type of this comment.
  #
  #   * Inline comments correspond to `:inline`:
  #
  #         # whatever
  #
  #   * Block comments correspond to `:document`:
  #
  #         =begin
  #         hi i am a document
  #         =end
  #
  # @return [Symbol]
  #
  def type
    case text
    when /^#/
      :inline
    when /^=begin/
      :document
    end
  end

  ##
  # @see #type
  # @return [Boolean] true if this is an inline comment.
  #
  def inline?
    type == :inline
  end

  ##
  # @see #type
  # @return [Boolean] true if this is a block comment.
  #
  def document?
    type == :document
  end

  ##
  # Compares comments. Two comments are equal if they
  # correspond to the same source range.
  #
  # @param [Object] other
  # @return [Boolean]
  #
  def ==(other)
    other.is_a?(Source::Comment) &&
      @location == other.location
  end

  ##
  # @return [String] a human-readable representation of this comment
  #
  def inspect
    "#<Parser::Source::Comment #{@location.expression.to_s} #{text.inspect}>"
  end
end