Class: Operator

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

Direct Known Subclasses

BinaryOperator, UnaryOperator

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(name, arity, exec_type, force_type = nil, pre_condition = nil, post_condition = nil) ⇒ Operator 



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# File 'lib/mdarray/operators.rb', line 98

def initialize(name, arity, exec_type, force_type = nil, pre_condition = nil, 
               post_condition = nil)

  @name = name
  @arity = arity
  @exec_type = exec_type
  @helper = nil
  @force_type = force_type
  @pre_condition = pre_condition  # proc to be executed before the main loop
  @pre_condition_result = nil
  @post_condition = post_condition # proc to be executed after the main loop

end

Instance Attribute Details

#arity ⇒ Object (readonly)

number of arguments to the operator



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# File 'lib/mdarray/operators.rb', line 85

def arity
  @arity
end

#exec_type ⇒ Object (readonly)

type of operator execution, e.g., default, in_place, numeric



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# File 'lib/mdarray/operators.rb', line 86

def exec_type
  @exec_type
end

#fmap ⇒ Object (readonly)

function map for this operator



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# File 'lib/mdarray/operators.rb', line 88

def fmap
  @fmap
end

#force_type ⇒ Object (readonly)

force this type as the result type



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# File 'lib/mdarray/operators.rb', line 89

def force_type
  @force_type
end

#helper ⇒ Object (readonly)

helper method for this operator



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# File 'lib/mdarray/operators.rb', line 87

def helper
  @helper
end

#name ⇒ Object (readonly)

Returns the value of attribute name.



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# File 'lib/mdarray/operators.rb', line 83

def name
  @name
end

#other_args ⇒ Object (readonly)

list of arguments to the operator other than the operands



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# File 'lib/mdarray/operators.rb', line 92

def other_args
  @other_args
end

#post_condition ⇒ Object (readonly)

proc to be executed after the operator’s execution



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# File 'lib/mdarray/operators.rb', line 91

def post_condition
  @post_condition
end

#pre_condition ⇒ Object (readonly)

proc to be executed before the operator’s execution



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# File 'lib/mdarray/operators.rb', line 90

def pre_condition
  @pre_condition
end

#type ⇒ Object (readonly)

resulting type of the operation



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# File 'lib/mdarray/operators.rb', line 84

def type
  @type
end

Instance Method Details

#exec(*args) ⇒ Object 



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# File 'lib/mdarray/operators.rb', line 116

def exec(*args)

  @pre_condition_result = @pre_condition.call(*args) if @pre_condition
  result = method(@exec_type).call(*args)
  (@post_condition)? @post_condition.call(result, *args) : result

end