A refinement calculus for logic programs
Data(s) |
01/01/2002
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Resumo |
Existing refinement calculi provide frameworks for the stepwise development of imperative programs from specifications. This paper presents a refinement calculus for deriving logic programs. The calculus contains a wide-spectrum logic programming language, including executable constructs such as sequential conjunction, disjunction, and existential quantification, as well as specification constructs such as general predicates, assumptions and universal quantification. A declarative semantics is defined for this wide-spectrum language based on executions. Executions are partial functions from states to states, where a state is represented as a set of bindings. The semantics is used to define the meaning of programs and specifications, including parameters and recursion. To complete the calculus, a notion of correctness-preserving refinement over programs in the wide-spectrum language is defined and refinement laws for developing programs are introduced. The refinement calculus is illustrated using example derivations and prototype tool support is discussed. |
Identificador | |
Idioma(s) |
eng |
Publicador |
Cambridge University Press |
Palavras-Chave | #Refinement Calculus #Logic Programming #Computer Science, Software Engineering #Computer Science, Theory & Methods #C1 #280302 Software Engineering #700199 Computer software and services not elsewhere classified |
Tipo |
Journal Article |