Information technology. Programming languages, their environments and system software interfaces. Guidelines for language bindings
Information technology. Programming languages, their environments and system software interfaces. Guidelines for language bindings
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1 Scope This Technical Report is based on experience gained in the standardization of two major areas in information processing. One area covers programming languages. The other area is composed of the services necessary to an application program to achieve its goal. The services are divided into coherent groups, each referred to as a SYSTEM FACILITY, that are accessed through a FUNCTIONAL INTERFACE. The specification of a system facility, referred to as a FUNCTIONAL SPECIFICATION, defines a collection of SYSTEM FUNCTIONS, each of which carries out some well-defined service. Since in principle there is no reason why a particular system facility should not be used by a program, regardless of the language in which it is written, it is the practice of system facility specifiers to define an ‘abstract’ functional interface that is language independent. In this way, the concepts in a particular system facility may be refined by experts in that area without regard for language peculiarities. An internally coherent view of a particular system facility is defined, relating the system functions to each other in a consistent way and relating the system functions to other layers within the system facility, including protocols for communication with other objects in the total system. However, if these two areas are standardized independently, it is not possible to guarantee that programs from one operating environment can be moved to another, even if the programs are written in a standard programming language and use only standard system facilities. A language binding of a system facility to a programming language provides language syntax that maps the system facility’s fun...
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