Class: Proc

Inherits:
Object
  • Object
show all
Defined in:
opal/opal/corelib/proc.rb

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.new(&block) ⇒ Object 



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# File 'opal/opal/corelib/proc.rb', line 5

def self.new(&block)
  unless block
    raise ArgumentError, "tried to create a Proc object without a block"
  end

  block
end

Instance Method Details

#arity ⇒ Object

FIXME: this should support the various splats and optional arguments



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# File 'opal/opal/corelib/proc.rb', line 49

def arity
  `self.length`
end

#call(*args, &block) ⇒ Object Also known as: [] 



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# File 'opal/opal/corelib/proc.rb', line 13

def call(*args, &block)
  %x{
    if (block !== nil) {
      self.$$p = block;
    }

    var result;

    if (self.$$is_lambda) {
      result = self.apply(null, args);
    }
    else {
      result = Opal.yieldX(self, args);
    }

    if (result === $breaker) {
      return $breaker.$v;
    }

    return result;
  }
end

#lambda? ⇒ Boolean

Returns:



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# File 'opal/opal/corelib/proc.rb', line 42

def lambda?
  # This method should tell the user if the proc tricks are unavailable,
  # (see Proc#lambda? on ruby docs to find out more).
  `!!self.$$is_lambda`
end

#to_proc ⇒ Object 



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# File 'opal/opal/corelib/proc.rb', line 38

def to_proc
  self
end