func init
	// adds using namespace
	sys.add_use('System.Collections.Generic')

	// initialize the type of element
	if(isdef('Type'))
		warning(this.name + ' - manager does not defined')
	else
		this.type = code(this.props('Type').value.props('TypeName').value)
	end

	// initialize instance
	params = this.props('Constructor').value
	if(params == 'Constructor')
		params = ''
	elseif(params == 'Constructor2')
		params = '' + d("collection")
	elseif(params == 'Constructor3')
		params = '' + d("capacity")
	end
	sys.add_object(this.codename, 'Queue<' + this.type + '>', params)

	// makes implementation methods for properties
	sys._prop_init('Count', 1, 0, 1)

	// makes implementation of methods as properties
	sys._mtd_as_prop_init('Dequeue()')
	sys._mtd_as_prop_init('GetEnumerator()')
	sys._mtd_as_prop_init('Peek()')
	sys._mtd_as_prop_init('ToArray()')
	sys._mtd_as_prop_init('Queue')

	// makes implementation of simple methods
	sys._method_init('Clear')
	sys._method_init('TrimExcess')

	if(linked("onEmpty"))
		this.setfield('ex', 'ex' + this.id)
	end
end

func doConstructor()
	blk.println(this.codename, ' = new Queue <' + this.type + '> ();')
end

func doConstructor2(collection)
	blk.println(this.codename, ' = new Queue <' + this.type + '> (', d("collection"), ');')
end

func doConstructor3(capacity)
	blk.println(this.codename, ' = new Queue <' + this.type + '> (', d("capacity"), ');')
end

func doContains(item)
	if(linked("onContains"))
		event("onContains", this.codename + '.Contains(' + d("item") + ')')
	else
		blk.println(this.codename, '.Contains(', d("item"), ');')
	end
end

func doCopyTo(array, arrayIndex)
	blk.println(this.codename, '.CopyTo(', d("array"), ', ', d("arrayIndex"), ');')
end

func doEnqueue(item)
	blk.println(this.codename, '.Enqueue(', d("item"), ');')
end

func doDequeue()
	linked("onEmpty") ? blk.println('try {').inc() : ''
	event("onDequeue", this.codename + '.Dequeue()')
	if(linked("onEmpty"))
		blk.dec().println('} catch(InvalidOperationException ', this.ex, ') {').inc()
			event("onEmpty", this.ex + '.Message')
		blk.dec().println('}')
	end
end