Class: BasicObject

Defined in:
opal/stdlib/await.rb

Direct Known Subclasses

Delegator, Native::Object, Object

Instance Method Summary collapse

Instance Method Details

#instance_exec_await(*args, &block) ⇒ Object

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# File 'opal/stdlib/await.rb', line 81

def instance_exec_await(*args, &block)
  ::Kernel.raise ::ArgumentError, 'no block given' unless block

  # The awaits are defined inside an x-string. Opal can't find them
  # reliably and async-ify a method. Therefore, let's make Opal know
  # this is an async method.
  nil.__await__

  %x{
    var block_self = block.$$s,
        result;

    block.$$s = null;

    if (self.$$is_a_module) {
      self.$$eval = true;
      try {
        result = await block.apply(self, args);
      }
      finally {
        self.$$eval = false;
      }
    }
    else {
      result = await block.apply(self, args);
    }

    block.$$s = block_self;

    return result;
  }
end