Class: SyntaxTree::VarField

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

Overview

VarField represents a variable that is being assigned a value. As such, it is always a child of an assignment type node.

variable = value

In the example above, the VarField node represents the variable token.

Instance Attribute Summary collapse

Attributes inherited from Node

#location

Instance Method Summary collapse

Methods inherited from Node

#construct_keys, #end_char, #pretty_print, #start_char, #to_json, #to_mermaid

Constructor Details

#initialize(value:, location:) ⇒ VarField

Returns a new instance of VarField.



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# File 'lib/syntax_tree/node.rb', line 11545

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 11543

def comments
  @comments
end

#value ⇒ Object (readonly)

nil | :nil | Const | CVar | GVar | Ident | IVar

the target of this node



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# File 'lib/syntax_tree/node.rb', line 11540

def value
  @value
end

Instance Method Details

#===(other) ⇒ Object 



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# File 'lib/syntax_tree/node.rb', line 11584

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

#accept(visitor) ⇒ Object 



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# File 'lib/syntax_tree/node.rb', line 11551

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

#child_nodes ⇒ Object Also known as: deconstruct 



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# File 'lib/syntax_tree/node.rb', line 11555

def child_nodes
  value == :nil ? [] : [value]
end

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



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# File 'lib/syntax_tree/node.rb', line 11559

def copy(value: nil, location: nil)
  node =
    VarField.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 11572

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 11576

def format(q)
  if value == :nil
    q.text("nil")
  elsif value
    q.format(value)
  end
end