Class: Pipes::Pipe

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

Overview

Pipe is a mix-in which turns a class into a Pipes building block (Pipe). A Pipe can only have class methods since it can’t be instantiated.

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(ctx) ⇒ Pipe

Returns a new instance of Pipe.



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# File 'lib/codequest_pipes/pipe.rb', line 7

def initialize(ctx)
  @context = ctx
end

Dynamic Method Handling

This class handles dynamic methods through the method_missing method

#method_missing(name, *args, &block) ⇒ Object (private) 



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# File 'lib/codequest_pipes/pipe.rb', line 72

def method_missing(name, *args, &block)
  context.send(name, *args, &block)
end

Instance Attribute Details

#context ⇒ Object (readonly)

Returns the value of attribute context.



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# File 'lib/codequest_pipes/pipe.rb', line 5

def context
  @context
end

Class Method Details

.call(ctx) ⇒ Object 



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# File 'lib/codequest_pipes/pipe.rb', line 22

def self.call(ctx)
  return ctx if ctx.error
  _validate_ctx(_required_context_elements, ctx)
  new(ctx).call
  _validate_ctx(_provided_context_elements, ctx)
end

.provide_context(*args) ⇒ Object 



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# File 'lib/codequest_pipes/pipe.rb', line 33

def self.provide_context(*args)
  _provided_context_elements.push(*args)
end

.require_context(*args) ⇒ Object 



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# File 'lib/codequest_pipes/pipe.rb', line 29

def self.require_context(*args)
  _required_context_elements.push(*args)
end

.|(other) ⇒ Object 



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# File 'lib/codequest_pipes/pipe.rb', line 15

def self.|(other)
  this = self
  Class.new(Pipe) do
    _combine(this, other)
  end
end

Instance Method Details

#call ⇒ Object 



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# File 'lib/codequest_pipes/pipe.rb', line 11

def call
  fail MissingCallMethod
end