Class: Puppet::Parser::AST::Relationship

Inherits:
Branch show all
Defined in:
lib/puppet/parser/ast/relationship.rb

Constant Summary collapse

RELATIONSHIP_TYPES = 
%w{-> <- ~> <~}

Instance Attribute Summary collapse

Attributes inherited from Branch

#children, #pin

Instance Method Summary collapse

Methods inherited from Branch

#each

Constructor Details

#initialize(left, right, arrow, args = {}) ⇒ Relationship

Returns a new instance of Relationship.



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# File 'lib/puppet/parser/ast/relationship.rb', line 22

def initialize(left, right, arrow, args = {})
  super(args)
  unless RELATIONSHIP_TYPES.include?(arrow)
    raise ArgumentError, "Invalid relationship type #{arrow.inspect}; valid types are #{RELATIONSHIP_TYPES.collect { |r| r.to_s }.join(", ")}"
  end
  @left, @right, @arrow = left, right, arrow
end

Instance Attribute Details

#arrow ⇒ Object 



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# File 'lib/puppet/parser/ast/relationship.rb', line 8

def arrow
  @arrow
end

#left ⇒ Object 



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# File 'lib/puppet/parser/ast/relationship.rb', line 8

def left
  @left
end

#right ⇒ Object 



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# File 'lib/puppet/parser/ast/relationship.rb', line 8

def right
  @right
end

#type ⇒ Object 



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# File 'lib/puppet/parser/ast/relationship.rb', line 8

def type
  @type
end

Instance Method Details

#evaluate(scope) ⇒ Object

Evaluate our object, but just return a simple array of the type and name.



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# File 'lib/puppet/parser/ast/relationship.rb', line 12

def evaluate(scope)
  real_left = left.safeevaluate(scope)
  real_right = right.safeevaluate(scope)

  source, target = sides2edge(real_left, real_right)
  scope.compiler.add_relationship Puppet::Parser::Relationship.new(source, target, type)

  real_right
end

#sides2edge(left, right) ⇒ Object 



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# File 'lib/puppet/parser/ast/relationship.rb', line 34

def sides2edge(left, right)
  out_edge? ? [left, right] : [right, left]
end