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--Copyright (C) 2007, Gabriel Dos Reis.
--All rights reserved.
--
--Redistribution and use in source and binary forms, with or without
--modification, are permitted provided that the following conditions are
--met:
--
--    - Redistributions of source code must retain the above copyright
--      notice, this list of conditions and the following disclaimer.
--
--    - Redistributions in binary form must reproduce the above copyright
--      notice, this list of conditions and the following disclaimer in
--      the documentation and/or other materials provided with the
--      distribution.
--
--    - Neither the name of The Numerical Algorithms Group Ltd. nor the
--      names of its contributors may be used to endorse or promote products
--      derived from this software without specific prior written permission.
--
--THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
--IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
--TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
--PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
--OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
--EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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)abbrev domain DOMAIN Domain
++ Author: Gabriel Dos Reis
++ Date Create: October 18, 2007.
++ Date Last Updated: January 19, 2008.
++ Basic Operations: coerce, reify
++ Related Constructors: Type, Syntax, OutputForm
++ Also See: Type, ConstructorCall
Domain(): Public == Private where
  Public ==> CoercibleTo(OutputForm) with
    reify: % -> ConstructorCall
      ++ reify(d) returns the abstract syntax for the domain `x'.

    reflect: ConstructorCall -> %
      ++ reflect cc returns the domain object designated by the
      ++ ConstructorCall syntax `cc'.  The constructor implied 
      ++ by `cc' must be known to the system since it is instantiated.
   
    showSummary: % -> Void
      ++ showSummary(d) prints out implementation detail information
      ++ of domain `d'.

  Private ==> add
    coerce x ==
      outputDomainConstructor(x)$Lisp

    reify x ==
      devaluate(x)$Lisp @ ConstructorCall

    reflect cc ==
      evalDomain(cc)$Lisp @ %

    showSummary x ==
      showSummary(x)$Lisp