Class: SyntaxTree::WhileNode

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

Overview

While represents a while loop.

while predicate
end

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(predicate:, statements:, location:) ⇒ WhileNode

Returns a new instance of WhileNode.



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# File 'lib/syntax_tree/node.rb', line 11767

def initialize(predicate:, statements:, location:)
  @predicate = predicate
  @statements = statements
  @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 11765

def comments
  @comments
end

#predicate ⇒ Object (readonly)

untyped

the expression to be checked



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# File 'lib/syntax_tree/node.rb', line 11759

def predicate
  @predicate
end

#statements ⇒ Object (readonly)

Statements

the expressions to be executed



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# File 'lib/syntax_tree/node.rb', line 11762

def statements
  @statements
end

Instance Method Details

#===(other) ⇒ Object 



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# File 'lib/syntax_tree/node.rb', line 11809

def ===(other)
  other.is_a?(WhileNode) && predicate === other.predicate &&
    statements === other.statements
end

#accept(visitor) ⇒ Object 



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# File 'lib/syntax_tree/node.rb', line 11774

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

#child_nodes ⇒ Object Also known as: deconstruct 



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# File 'lib/syntax_tree/node.rb', line 11778

def child_nodes
  [predicate, statements]
end

#copy(predicate: nil, statements: nil, location: nil) ⇒ Object 



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# File 'lib/syntax_tree/node.rb', line 11782

def copy(predicate: nil, statements: nil, location: nil)
  node =
    WhileNode.new(
      predicate: predicate || self.predicate,
      statements: statements || self.statements,
      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 11796

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

#format(q) ⇒ Object 



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# File 'lib/syntax_tree/node.rb', line 11805

def format(q)
  LoopFormatter.new("while", self).format(q)
end

#modifier? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/syntax_tree/node.rb', line 11814

def modifier?
  predicate.location.start_char > statements.location.start_char
end