Class: Ori::Promise

Inherits:
Object
  • Object
show all
Includes:
Selectable
Defined in:
lib/ori/promise.rb

Overview

: [E]

Instance Method Summary collapse

Constructor Details

#initialize ⇒ Promise

Returns a new instance of Promise.



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# File 'lib/ori/promise.rb', line 8

def initialize
  @resolved = false
  @value = nil
end

Instance Method Details

#await ⇒ Object

: () -> E



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# File 'lib/ori/promise.rb', line 32

def await
  return @value if resolved?

  Fiber.yield(self) until resolved?
  @value
end

#deconstruct ⇒ Object 



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# File 'lib/ori/promise.rb', line 26

def deconstruct
  await unless resolved?
  [@value]
end

#resolve(value) ⇒ Object

: (E value) -> void



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# File 'lib/ori/promise.rb', line 14

def resolve(value)
  raise "Promise already resolved" if resolved?

  @resolved = true
  @value = value
end

#resolved? ⇒ Boolean

: () -> bool

Returns:

  • (Boolean) 


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# File 'lib/ori/promise.rb', line 22

def resolved?
  @resolved
end