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

Constructor Details

#initialize(value:, location:, comments: []) ⇒ CHAR

Returns a new instance of CHAR.



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# File 'lib/syntax_tree/node.rb', line 173

def initialize(value:, location:, comments: [])
  @value = value
  @location = location
  @comments = 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 171

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 168

def value
  @value
end

Instance Method Details

#child_nodes ⇒ Object Also known as: deconstruct 



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# File 'lib/syntax_tree/node.rb', line 179

def child_nodes
  []
end

#deconstruct_keys(keys) ⇒ Object 



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# File 'lib/syntax_tree/node.rb', line 185

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 189

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

#pretty_print(q) ⇒ Object 



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# File 'lib/syntax_tree/node.rb', line 199

def pretty_print(q)
  q.group(2, "(", ")") do
    q.text("CHAR")

    q.breakable
    q.pp(value)

    q.pp(Comment::List.new(comments))
  end
end

#to_json(*opts) ⇒ Object 



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# File 'lib/syntax_tree/node.rb', line 210

def to_json(*opts)
  { type: :CHAR, value: value, loc: location, cmts: comments }.to_json(
    *opts
  )
end