Towards a formalism to produce a programmer assistant CASE tool

A weak specification method important to the area of computer-aided software engineering (CASE) is introduced. The specification language introduced does not require the specification of control flow information. When given a specification consisting of a formula characterizing input constraints of a function and a formula characterizing output constraints, it is possible to synthesize program functions. The synthesis algorithm is guaranteed to find all functions which satisfy the specification. It is shown that when the algorithm is applied to the specifications, it is capable of producing all program structures, including sequences, selections, and iterations. Therefore, the methodology provides for a formal foundation upon which a CASE programmer assistant tool can be built