the classification of the sources of obligations contractual and non contractual in french and iranian law

one of problems of the law of obligations is the classification of the sources of obligations. in the law of the rome the obligation arose from contract and crime. in french law there is other sources and this classification has been recorded in other codes. the lawyers believe that this classification is not extensive and logical. today there is unilateral obligation and obligations by other sources. the effects of classification of the sources of obligations is in the moderns codifications. in the law of iran the examination of the classification of the sources of obligations is necessary for removal of ambiguity of civil code.