Class: Dhallish::Ast::Import_Alternative

Inherits:
Object
  • Object
show all
Defined in:
lib/ast.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(lhs, rhs) ⇒ Import_Alternative

Returns a new instance of Import_Alternative.



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# File 'lib/ast.rb', line 779

def initialize(lhs, rhs)
  @lhs = lhs
  @rhs = rhs
  @lhs_succeded = false
end

Instance Attribute Details

#lhs ⇒ Object

Returns the value of attribute lhs.



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# File 'lib/ast.rb', line 776

def lhs
  @lhs
end

#rhs ⇒ Object

Returns the value of attribute rhs.



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# File 'lib/ast.rb', line 777

def rhs
  @rhs
end

Instance Method Details

#compute_type(ctx) ⇒ Object 



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# File 'lib/ast.rb', line 785

def compute_type(ctx)
  begin
    type = @lhs.compute_type ctx
    @lhs_succeded = true
    type
  rescue AssertionError, DhallError => e
    raise e
  rescue
    @rhs.compute_type ctx
  end
end

#evaluate(ctx) ⇒ Object 



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# File 'lib/ast.rb', line 797

def evaluate(ctx)
  if @lhs_succeded
    @lhs.evaluate ctx
  else
    @rhs.evaluate ctx
  end
end