Class: SyntaxTree::StringDVar

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

Overview

StringDVar represents shorthand interpolation of a variable into a string. It allows you to take an instance variable, class variable, or global variable and omit the braces when interpolating.

"#@variable"

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(variable:, location:) ⇒ StringDVar

Returns a new instance of StringDVar.



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# File 'lib/syntax_tree/node.rb', line 10057

def initialize(variable:, location:)
  @variable = variable
  @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 10055

def comments
  @comments
end

#variable ⇒ Object (readonly)

Backref | VarRef

the variable being interpolated



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# File 'lib/syntax_tree/node.rb', line 10052

def variable
  @variable
end

Instance Method Details

#===(other) ⇒ Object 



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# File 'lib/syntax_tree/node.rb', line 10094

def ===(other)
  other.is_a?(StringDVar) && variable === other.variable
end

#accept(visitor) ⇒ Object 



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# File 'lib/syntax_tree/node.rb', line 10063

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

#child_nodes ⇒ Object Also known as: deconstruct 



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# File 'lib/syntax_tree/node.rb', line 10067

def child_nodes
  [variable]
end

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



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# File 'lib/syntax_tree/node.rb', line 10071

def copy(variable: nil, location: nil)
  node =
    StringDVar.new(
      variable: variable || self.variable,
      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 10084

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

#format(q) ⇒ Object 



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# File 'lib/syntax_tree/node.rb', line 10088

def format(q)
  q.text('#{')
  q.format(variable)
  q.text("}")
end