Class: SyntaxTree::CHAR

Inherits:
Node
  • Object
show all
Defined in:
lib/syntax_tree/node.rb

Overview

CHAR irepresents a single codepoint in the script encoding.

?a

In the example above, the CHAR node represents the string literal “a”. You can use control characters with this as well, as in ?C-a.

Instance Attribute Summary collapse

Attributes inherited from Node

#location

Instance Method Summary collapse

Methods inherited from Node

#construct_keys, #pretty_print, #to_json

Constructor Details

#initialize(value:, location:) ⇒ CHAR

Returns a new instance of CHAR.



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# File 'lib/syntax_tree/node.rb', line 245

def initialize(value:, location:)
  @value = value
  @location = location
  @comments = []
end

Instance Attribute Details

#comments ⇒ Object (readonly)

Array[ Comment | EmbDoc ]

the comments attached to this node



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# File 'lib/syntax_tree/node.rb', line 243

def comments
  @comments
end

#value ⇒ Object (readonly)

String

the value of the character literal



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# File 'lib/syntax_tree/node.rb', line 240

def value
  @value
end

Instance Method Details

#===(other) ⇒ Object 



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# File 'lib/syntax_tree/node.rb', line 286

def ===(other)
  other.is_a?(CHAR) && value === other.value
end

#accept(visitor) ⇒ Object 



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# File 'lib/syntax_tree/node.rb', line 251

def accept(visitor)
  visitor.visit_CHAR(self)
end

#child_nodes ⇒ Object Also known as: deconstruct 



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# File 'lib/syntax_tree/node.rb', line 255

def child_nodes
  []
end

#copy(value: nil, location: nil) ⇒ Object 



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# File 'lib/syntax_tree/node.rb', line 259

def copy(value: nil, location: nil)
  node =
    CHAR.new(
      value: value || self.value,
      location: location || self.location
    )

  node.comments.concat(comments.map(&:copy))
  node
end

#deconstruct_keys(_keys) ⇒ Object 



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# File 'lib/syntax_tree/node.rb', line 272

def deconstruct_keys(_keys)
  { value: value, location: location, comments: comments }
end

#format(q) ⇒ Object 



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# File 'lib/syntax_tree/node.rb', line 276

def format(q)
  if value.length != 2
    q.text(value)
  else
    q.text(q.quote)
    q.text(value[1] == "\"" ? "\\\"" : value[1])
    q.text(q.quote)
  end
end