Download Casl Reference Manual: The Complete Documentation of the by Bernd Krieg-Brückner, Peter D. Mosses (auth.), Peter D. PDF

By Bernd Krieg-Brückner, Peter D. Mosses (auth.), Peter D. Mosses (eds.)

CASL, the typical Algebraic Specification Language, was once designed via the contributors of CoFI, the typical Framework Initiative for algebraic specification and improvement, and is a general-purpose language for functional use in software program improvement for specifying either necessities and layout. CASL is already considered as a de facto usual, and diverse sublanguages and extensions can be found for particular tasks.

This reference handbook offers an in depth documentation of the CASL specification formalism. It experiences the most underlying suggestions, and punctiliously summarizes the meant which means of every build of CASL. The ebook officially defines either the syntax and semantics of CASL, and offers a good judgment for reasoning approximately CASL requirements. moreover, vast libraries of CASL requisites of simple facts varieties are supplied in addition to a finished annotated bibliography of CoFI publications.

As a separate, complementary publication LNCS 2900 offers an academic creation to CASL, the CASL person Manual.

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Additional info for Casl Reference Manual: The Complete Documentation of the Common Algebraic Specification Language

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The application of the predicate symbol is well-sorted when there is a declaration of the predicate name (with the argument sorts indicated by the indicated type in the case of a qualified predicate name) such that all the argument terms are well-sorted for the respective argument sorts. It then expands to an application of the qualified predicate name to the fully-qualified expansions of the argument terms for those sorts. Definedness DEFINEDNESS ::= definedness TERM A definedness formula is written: def T It is well-sorted when the term is well-sorted for some sort.

Universal quantification over a variable that does not occur free in an axiom is semantically irrelevant, due to the assumption that all carrier sets are non-empty. 1 Global Variable Declarations VAR-ITEMS ::= var-items VAR-DECL+ A list VAR-ITEMS of variable declarations is written: vars VD1 ; . . VDn ; 18 I:2 Basic Specifications Note that local variable declarations are written in a similar way, but followed directly by a bullet ‘ • ’ instead of the optional semicolon. VAR-DECL ::= var-decl VAR+ SORT VAR ::= SIMPLE-ID A variable declaration VAR-DECL is written: v1 , .

SPn , and view instantiation affects only the target of the generic view. It is required that the reduct by the specification morphism of each model of the target { SP1 and . . and SPm } then { SP1 and . . and SPn } then SP is a model of the source SP ; otherwise the semantics is undefined. VIEW-NAME ::= SIMPLE-ID A view name VIEW-NAME is normally displayed in a Small-Caps font, and input in mixed upper and lower case. 2 Fitting Views FIT-ARG ::= ... 5 Symbol Lists and Mappings 45 A reference to a non-generic fitting argument view FIT-VIEW is simply written: view VN It refers to the current global environment, and is well-formed as an argument for a parameter SPi only when the global environment includes a view definition for VN of type from SP to SP , such that the signatures of SP and of SPi are the same.

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