Abstract
Programs that process streams of information are commonly built by assembling reusable information-flow components. In some systems the components must be chosen from a pre-defined set of primitives; in others the programmer can create new custom components using a general-purpose programming language.
Neither approach is ideal: restricting programmers to a set of primitive components limits the expressivity of the system, while allowing programmers to define new components in a general-purpose language makes it difficult or impossible to reason about the composite system. We advocate defining information-flow components in a domain-specific language (DSL) that enables us to infer the properties of the components and of the composed system; this provides us with a good compromise between analysability and expressivity.
This paper presents DirectFlow, which comprises a DSL, a compiler and a runtime system. The language allows programmers to define objects that implement information-flow components without specifying how messages are sent and received. The compiler generates Java classes by inferring the message sends and methods, while the run-time library constructs information-flow networks by composition of DSL-defined components with standard components.
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Lin, Ck., Black, A.P. (2007). DirectFlow: A Domain-Specific Language for Information-Flow Systems. In: Ernst, E. (eds) ECOOP 2007 – Object-Oriented Programming. ECOOP 2007. Lecture Notes in Computer Science, vol 4609. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-540-73589-2_15
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DOI: https://doi.org/10.1007/978-3-540-73589-2_15
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