TaQLShow.h

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00001 //# TaQLShow.h: Class to show various TaQL-related info
00002 //# Copyright (C) 2016
00003 //# Associated Universities, Inc. Washington DC, USA.
00004 //#
00005 //# This library is free software; you can redistribute it and/or modify it
00006 //# under the terms of the GNU Library General Public License as published by
00007 //# the Free Software Foundation; either version 2 of the License, or (at your
00008 //# option) any later version.
00009 //#
00010 //# This library is distributed in the hope that it will be useful, but WITHOUT
00011 //# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
00012 //# FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Library General Public
00013 //# License for more details.
00014 //#
00015 //# You should have received a copy of the GNU Library General Public License
00016 //# along with this library; if not, write to the Free Software Foundation,
00017 //# Inc., 675 Massachusetts Ave, Cambridge, MA 02139, USA.
00018 //#
00019 //# Correspondence concerning AIPS++ should be addressed as follows:
00020 //#        Internet email: aips2-request@nrao.edu.
00021 //#        Postal address: AIPS++ Project Office
00022 //#                        National Radio Astronomy Observatory
00023 //#                        520 Edgemont Road
00024 //#                        Charlottesville, VA 22903-2475 USA
00025 //#
00026 //# $Id$
00027 
00028 #ifndef TABLES_TAQLSHOW_H
00029 #define TABLES_TAQLSHOW_H
00030 
00031 //# Includes
00032 #include <casacore/casa/aips.h>
00033 #include <casacore/tables/TaQL/TaQLNodeRep.h>
00034 #include <casacore/casa/Quanta/UnitName.h>
00035 #include <casacore/casa/Arrays/Vector.h>
00036 #include <map>
00037 #include <ostream>
00038 
00039 namespace casacore { //# NAMESPACE CASACORE - BEGIN
00040 
00041 // <summary>
00042 // Class to show various TaQL-related info
00043 // </summary>
00044 
00045 // <use visibility=local>
00046 
00047 // <reviewed reviewer="" date="" tests="tTaQLNode">
00048 // </reviewed>
00049 
00050 // <prerequisite>
00051 //# Classes you should understand before using this one.
00052 //   <li> <linkto group=TableGram.h#TableGramFunctions>TableGram</linkto>
00053 //   <li> Note 199 describing
00054 //        <a href="../notes/199.html">
00055 //        TaQL</a>
00056 // </prerequisite>
00057 
00058 // <synopsis>
00059 // The result of parsing a TaQL command is stored in TaQLNode objects.
00060 // Each part of the command can have its own specialized
00061 // <linkto class=TaQLNodeRep>TaQLNodeRep</linkto> object, which forms
00062 // the letter in the TaQLNode envelope.
00063 // <br>The actual scanning/parsing of the command is done using flex/bison
00064 // as defined in the TableGram files.
00065 // </synopsis> 
00066 
00067 // <motivation>
00068 // The letter-envelope idiom (counted pointer) makes if much easier
00069 // to keep track of memory, especially in the case of exceptions.
00070 // </motivation>
00071 
00072 class TaQLShow
00073 {
00074 public:
00075   static String getInfo (const Vector<String>& parts,
00076                          const TaQLStyle& style);
00077   static String showTable (const Vector<String>& parts,
00078                            const TaQLStyle& style);
00079   static String showCommand (const String& cmd);
00080   static String showFuncs (const String& type,
00081                          const Vector<String>& parts,
00082                          const TaQLStyle& style);
00083   static void showUnitKind (std::ostream& os, const UnitVal& kind,
00084                             const std::map<String, UnitName>& units);
00085   static String showUnits (const String& type);
00086   static String showMeasTypes (const String& type);
00087 };
00088 
00089 
00090 } //# NAMESPACE CASACORE - END
00091 
00092 #endif
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