Class: Pipeline::Builder

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

Instance Method Summary collapse

Constructor Details

#initialize(&block) ⇒ Builder

Returns a new instance of Builder.



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# File 'lib/pipeline/builder.rb', line 3

def initialize(&block)
  if block_given?
    if block.arity == 1
      yield self
    else
      instance_eval(&block)
    end
  end
end

Instance Method Details

#call(env) ⇒ Object

Calls the operations in the stack

Parameters:

  • env (Object) —

    • Optional initial input to the pipeline



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# File 'lib/pipeline/builder.rb', line 24

def call(env)
  build_operation_chain(stack.dup).
    call(env.dup)
end

#inspect_stack ⇒ Object

 Returns the internal stack array for reading as a frozen object



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# File 'lib/pipeline/builder.rb', line 30

def inspect_stack
  stack.freeze
end

#use(operation, *args, &block) ⇒ Object

 Adds an operation to the internal stack

Parameters:

  • operation (Class) —

    • The operation class

  • args (Array) —

    • Arguments for the operation

  • block (Proc) —

    • Optional block for the operation



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# File 'lib/pipeline/builder.rb', line 17

def use(operation, *args, &block)
  stack << [operation, args, block]
  self
end