Object-Z is an object-oriented extension of the formal specification language Z. It adds to Z notions of classes and objects, and inheritance and polymorphism. By extending Z's semantic basis, it enables the specification of systems as collections of independent objects in which self and mutual referencing are possible.
The Object-Z Specification Language presents a comprehensive description of Object-Z including discussions of semantic issues, definitions of all language constructs, type rules and other rules of usage, specification guidelines, and a full concrete syntax. It will enable you to confidently construct Object-Z specifications and is intended as a reference manual to keep by your side as you use and learn to use Object-Z.
The Object-Z Specification Language is suitable as a textbook or as a secondary text for a graduate-level course, and as a reference for researchers and practitioners in industry.

Contenuti

1 Introduction.- 1.1 Motivation.- 1.2 Classes.- 1.3 Objects.- 1.4 Inheritance.- 1.5 Polymorphism.- 1.6 Case Study: Tetris.- 2 Semantic Basis.- 2.1 Object Identity.- 2.1.1 Types and values.- 2.1.2 Forward declaration.- 2.1.3 Self-reference.- 2.2 Objects.- 2.2.1 Objects vs. object identities.- 2.2.2 Forward declaration revisited.- 2.3 Modularity and Compositionality.- 2.3.1 Object coupling.- 2.3.2 Object aliasing.- 2.3.3 Object containment.- 3 Syntactic Constructs.- 3.1 Class Definitions.- 3.2 Visibility Lists.- 3.3 Inherited Classes.- 3.3.1 Cancellation and redefinition of features.- 3.4 Local Definitions.- 3.4.1 Basic types.- 3.4.2 Axiomatic definitions.- 3.4.3 Abbreviation definitions.- 3.4.4 Free types.- 3.5 State Schemas.- 3.6 Initial State Schemas.- 3.7 Operations.- 3.7.1 Operation schemas.- 3.7.2 Operation promotions.- 3.7.3 Operation operators.- 3.7.4 Distributed operators.- 3.7.5 Recursion.- 3.8 Predicates.- 3.8.1 Boolean-valued expressions.- 3.8.2 Promoted initial state predicates.- 3.9 Expressions.- 3.9.1 Class names.- 3.9.2 Polymorphism.- 3.9.3 Class union.- 3.9.4 Object containment.- 3.9.5 Promoted attributes.- 3.9.6 Self.- 4 Language Definition.- 4.1 Meta-Functions.- 4.2 Global Paragraphs.- 4.3 Class Paragraphs.- 4.4 Operation Expressions.- 4.5 Predicates.- 4.6 Expressions.- 5 Concurrent Systems.- 5.1 Aggregation.- 5.2 Synchronization.- 5.3 Communication.- 5.4 Nondeterminism.- 5.5 Case Study: Hearts.- 6 Concrete Syntax.- 6.1 Specifications.- 6.2 Global Paragraphs.- 6.3 Class Paragraphs.- 6.4 Operation Expressions.- 6.5 Schema Expressions.- 6.6 Declarations.- 6.7 Predicates.- 6.8 Expressions.

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