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[[!meta copyright="Copyright © 2002, 2003, 2007, 2008, 2010 Free Software
Foundation, Inc."]]
[[!meta license="""[[!toggle id="license" text="GFDL 1.2+"]][[!toggleable
id="license" text="Permission is granted to copy, distribute and/or modify this
document under the terms of the GNU Free Documentation License, Version 1.2 or
any later version published by the Free Software Foundation; with no Invariant
Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license
is included in the section entitled [[GNU Free Documentation
License|/fdl]]."]]"""]]
[[!meta title="IDL"]]
An *IDL* is an *interface definition language* ([[!wikipedia
Interface_description_language desc="Wikipedia article"]]). A well-known one
is CORBA. These are [[DSL]]s.
An IDL compiler takes a specification and generates stub code that hides the
transport details, and by this implements a [[RPC]] system.
In the case of [[Mach's MIG|microkernel/mach/mig]], this hides the marshalling
and unmarshalling of procedures' parameters to and from
[[microkernel/mach/message]] format, according to [[microkernel/Mach]]'s
semantics, and invoking the respective [[microkernel/mach/port]] operations.
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