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

	// initialize instance
	if(linked("Result"))
		sys.add_var(this.name, 1)
	end

	// gets type of an array
	if(isdef("ElementType"))
		this.type = 'Object'
	else
		this.type = code(this.props("ElementType").value.props("TypeName").value)
		if(this.type == 'Object undefined')
			error(this.name + ' - property ' + this.props("ElementType").name + ' does not defined')
			this.type = 'Object'
		end
	end
end

func doIndexOf(array, value)
	if(linked("Result"))
		blk.println(this.codename, ' = Array.IndexOf', isdef("ElementType") ? '' : '<' + this.type + '>', '(', d("Array"), ', ', d("Value"), ');')
		event("onResult", this.codename)
	else
		event("onResult", 'Array.IndexOf' + (isdef("ElementType") ? '' : '<' + this.type + '>') + '(' + d("Array") + ', ' + d("Value") + ')')
	end
end

func doIndexOf2(array, value, startIndex)
	if(linked("Result"))
		blk.println(this.codename, ' = Array.IndexOf', isdef("ElementType") ? '' : '<' + this.type + '>', '(', d("Array"), ', ', d("Value"), ', ', d("StartIndex"), ');')
		event("onResult", this.codename)
	else
		event("onResult", 'Array.IndexOf' + (isdef("ElementType") ? '' : '<' + this.type + '>') + '(' + d("Array") + ', ' + d("Value") + ', ' + d("StartIndex") + ')')
	end
end

func doIndexOf3(array, value, startIndex, length)
	if(linked("Result"))
		blk.println(this.codename, ' = Array.IndexOf', isdef("ElementType") ? '' : '<' + this.type + '>', '(', d("Array"), ', ', d("Value"), ', ', d("StartIndex"), ', ', d("Length"), ');')
		event("onResult", this.codename)
	else
		event("onResult", 'Array.IndexOf' + (isdef("ElementType") ? '' : '<' + this.type + '>') + '(' + d("Array") + ', ' + d("Value") + ', ' + d("StartIndex") + ', ' + d("Length") + ')')
	end
end

func Result
	return(this.codename)
end