Class: Celluloid::Call

Inherits:
Object
  • Object
show all
Defined in:
lib/celluloid/calls.rb,
lib/celluloid/call/sync.rb,
lib/celluloid/call/async.rb,
lib/celluloid/call/block.rb

Overview

Calls represent requests to an actor

Direct Known Subclasses

Async, Sync

Defined Under Namespace

Classes: Async, Block, Sync

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(method, arguments = [], block = nil) ⇒ Call

Returns a new instance of Call.


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# File 'lib/celluloid/calls.rb', line 6

def initialize(method, arguments = [], block = nil)
  @retry = 0
  @method = method
  @arguments = arguments
  if block
    if Celluloid.exclusive?
      # FIXME: nicer exception
      raise "Cannot execute blocks on sender in exclusive mode"
    end
    @block = Proxy::Block.new(Celluloid.mailbox, self, block)
  else
    @block = nil
  end
end

Instance Attribute Details

#argumentsObject (readonly)

Returns the value of attribute arguments


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# File 'lib/celluloid/calls.rb', line 4

def arguments
  @arguments
end

#blockObject (readonly)

Returns the value of attribute block


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# File 'lib/celluloid/calls.rb', line 4

def block
  @block
end

#methodObject (readonly)

Returns the value of attribute method


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# File 'lib/celluloid/calls.rb', line 4

def method
  @method
end

Instance Method Details

#check(obj) ⇒ Object


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# File 'lib/celluloid/calls.rb', line 30

def check(obj)
  # NOTE: don't use respond_to? here
  begin
    meth = obj.method(@method)
  rescue NameError
    raise NoMethodError, "undefined method `#{@method}' for #<#{obj.class}:0x#{obj.object_id.to_s(16)}>"
  end

  arity = meth.arity

  if arity >= 0
    if @arguments.size != arity
      e = ArgumentError.new("wrong number of arguments (#{@arguments.size} for #{arity})")
      e.set_backtrace(caller << "#{meth.source_location.join(':')}: in `#{meth.name}`")
      raise e
    end
  elsif arity < -1
    mandatory_args = -arity - 1
    if arguments.size < mandatory_args
      e = ArgumentError.new("wrong number of arguments (#{@arguments.size} for #{mandatory_args}+)")
      e.set_backtrace(caller << "#{meth.source_location.join(':')}: in `#{meth.name}`")
      raise e
    end
  end
rescue => ex
  raise AbortError, ex
end

#dispatch(obj) ⇒ Object


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# File 'lib/celluloid/calls.rb', line 25

def dispatch(obj)
  check(obj)
  obj.public_send(@method, *@arguments, &(@block && @block.to_proc))
end

#execute_block_on_receiverObject


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# File 'lib/celluloid/calls.rb', line 21

def execute_block_on_receiver
  @block && @block.execution = :receiver
end