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// Copyright (C) 1995 The New York Group Theory Cooperative
// See magnus/doc/COPYRIGHT for the full notice.
// Contents: Declaration of parser for Maps.
//
// Principal Author: Roger Needham
//
// Status: useable
//
// Revision History:
//
#ifndef _MAP_PARSER_H_
#define _MAP_PARSER_H_
#include "WordParser.h"
#include "Map.h"
// A Map defined on generators { x, y, z } has the form
// {
// x -> w(x,y,z),
// y -> w(x,y,z),
// z -> w(x,y,z)
// }
// where the images of x, y, z need not be in order, whitespace is optional,
// and w(x,y,z) are words in the generators. Missing images default to the
// identity.
class MapParser : public WordParser {
public:
//////////////////////////////////////////////////////////////
// //
// Constructors: //
// //
//////////////////////////////////////////////////////////////
MapParser(istream &istr) : WordParser(istr) { }
// Initialize the parser with the istream from which to read.
// Destructor supplied by compiler.
//////////////////////////////////////////////////////////////
// //
// Raison d'etre: //
// //
//////////////////////////////////////////////////////////////
MapRep* parseMap(
const FGGroup& domain,
const FGGroup& range,
Chars& errMesg
);
};
#endif
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