00001 //# MSObservationGram.h: Grammar for ms scan sub-expressions 00002 //# Copyright (C) 1998 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 MS_MSOBSERVATIONGRAM_H 00029 #define MS_MSOBSERVATIONGRAM_H 00030 00031 00032 //# Includes 00033 #include <casacore/casa/aips.h> 00034 #include <casacore/ms/MSSel/MSObservationParse.h> 00035 #include <casacore/casa/BasicSL/String.h> 00036 00037 namespace casacore { //# NAMESPACE CASACORE - BEGIN 00038 00039 //# Forward Declarations 00040 class MeasurementSet; 00041 class TableExprNode; 00042 00043 // <summary> 00044 // Global functions for flex/bison scanner/parser for MSObservationGram 00045 // </summary> 00046 00047 // <use visibility=local> 00048 00049 // <reviewed reviewer="" date="" tests=""> 00050 // </reviewed> 00051 00052 // <prerequisite> 00053 //# Classes you should understand before using this one. 00054 // <li> MSObservationGram.l and .y (flex and bison grammar) 00055 // </prerequisite> 00056 00057 // <synopsis> 00058 // Global functions are needed to define the input of the flex scanner 00059 // and to start the bison parser. 00060 // The input is taken from a string. 00061 // </synopsis> 00062 00063 // <motivation> 00064 // It is necessary to be able to give an image expression in ASCII. 00065 // This can be used in glish. 00066 // </motivation> 00067 // <todo asof="$DATE:$"> 00068 //# A List of bugs, limitations, extensions or planned refinements. 00069 // </todo> 00070 00071 00072 // <group name=MSObservationGramFunctions> 00073 00074 // Declare the bison parser (is implemented by bison command). 00075 TableExprNode msObservationGramParseCommand (const MeasurementSet *ms, 00076 const MSObservation& obsSubTable, 00077 const TableExprNode& colAsTEN, 00078 const String& command, 00079 Vector<Int>& idList); 00080 00081 TableExprNode baseMSObservationGramParseCommand (MSObservationParse* parser, 00082 const TableExprNode& colAsTEN, 00083 const String& command, 00084 Vector<Int>& selectedIDs); 00085 // The yyerror function for the parser. 00086 // It throws an exception with the current token. 00087 void MSObservationGramerror (const char*); 00088 00089 // Give the table expression node. 00090 //const TableExprNode *msObservationGramParseNode(); 00091 void msObservationGramParseDeleteNode(); 00092 00093 // Give the current position in the string. 00094 // This can be used when parse errors occur. 00095 Int& msObservationGramPosition(); 00096 00097 // Declare the input routine for flex/bison. 00098 int msObservationGramInput (char* buf, int max_size); 00099 00100 // A function to remove escaped characters. 00101 //String msObservationGramRemoveEscapes (const String& in); 00102 00103 // A function to remove quotes from a quoted string. 00104 //String msObservationGramRemoveQuotes (const String& in); 00105 00106 // </group> 00107 00108 } //# NAMESPACE CASACORE - END 00109 00110 #endif