Class: Homerun::Instruction

Inherits:
Object
  • Object
show all
Includes:
Singleton
Defined in:
lib/homerun.rb

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize ⇒ Instruction

Returns a new instance of Instruction.



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# File 'lib/homerun.rb', line 13

def initialize
  super

  @steps = []
  @ctx = { _pass: true }
end

Instance Attribute Details

#ctx ⇒ Object (readonly)

Returns the value of attribute ctx.



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# File 'lib/homerun.rb', line 11

def ctx
  @ctx
end

#steps ⇒ Object (readonly)

Returns the value of attribute steps.



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# File 'lib/homerun.rb', line 11

def steps
  @steps
end

Class Method Details

.call(_ctx) ⇒ Object 



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# File 'lib/homerun.rb', line 36

def self.call(_ctx)
  instance.set_ctx(_ctx)

  cur = 0

  while cur < instance.steps.count do
    step = instance.steps[cur]

    pos = ->(_name) {
      instance.steps.index(instance.steps.find { |x| x[:name] == _name })
    }

    if step[:item].call(instance.ctx)
      if step[:success]
        cur = pos.call(step[:success])
        next
      else
        cur += 1
      end
    else
      if step[:failure]
        cur = pos.call(step[:failure])
        next
      else
        instance.set_pass(false)
        cur = instance.steps.count
      end
    end
  end

  if block_given?
    yield(instance.ctx) if instance.ctx[:_pass]
  end

  instance.ctx
end

.step(item, failure: nil, success: nil, name: nil) ⇒ Object 



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# File 'lib/homerun.rb', line 32

def self.step(item, failure: nil, success: nil, name: nil)
  instance.add_step({ item: item, failure: failure, success: success, name: name })
end

Instance Method Details

#add_step(step) ⇒ Object 



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# File 'lib/homerun.rb', line 20

def add_step(step)
  @steps << step
end

#set_ctx(_ctx) ⇒ Object 



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# File 'lib/homerun.rb', line 24

def set_ctx(_ctx)
  @ctx = { **ctx, **_ctx }
end

#set_pass(val) ⇒ Object 



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# File 'lib/homerun.rb', line 28

def set_pass(val)
  @ctx[:_pass] = val
end