Class: Rubasteme::AST::LetNode

Inherits:
ListNode show all
Defined in:
lib/rubasteme/ast/branch_node.rb

Instance Method Summary collapse

Methods inherited from ListNode

#elements, #empty?, #first, #rest

Methods inherited from BranchNode

#<<, #[], #[]=, #each, #size, #to_a

Methods inherited from Node

#to_a, #to_s, #type

Constructor Details

#initialize(_ = nil) ⇒ LetNode

Returns a new instance of LetNode.



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# File 'lib/rubasteme/ast/branch_node.rb', line 468

def initialize(_ = nil)
  # @nodes = [<bindings>, <body>] or
  #          [<identifier>, <bindings>, <body>]
  super(1, _)
end

Instance Method Details

#bindings ⇒ Object 



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# File 'lib/rubasteme/ast/branch_node.rb', line 482

def bindings
  named_let? ? @nodes[1] : @nodes[0]
end

#bindings=(node) ⇒ Object 



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# File 'lib/rubasteme/ast/branch_node.rb', line 486

def bindings=(node)
  if named_let?
    @nodes[1] = node
  else
    @nodes[0] = node
  end
end

#body ⇒ Object 



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# File 'lib/rubasteme/ast/branch_node.rb', line 494

def body
  named_let? ? @nodes[2] : @nodes[1]
end

#body=(node) ⇒ Object 



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# File 'lib/rubasteme/ast/branch_node.rb', line 498

def body=(node)
  start_pos = named_let? ? 2 : 1
  @nodes[start_pos] = node
end

#identifier ⇒ Object 



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# File 'lib/rubasteme/ast/branch_node.rb', line 474

def identifier
  named_let? ? @nodes[0] : nil
end

#identifier=(node) ⇒ Object 



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# File 'lib/rubasteme/ast/branch_node.rb', line 478

def identifier=(node)
  @nodes.insert(0, node) if node.type == :ast_identifier
end