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MSFieldGram.h
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1//# MSFieldGram.h: Grammar for ms field sub-expressions
2//# Copyright (C) 1998
3//# Associated Universities, Inc. Washington DC, USA.
4//#
5//# This library is free software; you can redistribute it and/or modify it
6//# under the terms of the GNU Library General Public License as published by
7//# the Free Software Foundation; either version 2 of the License, or (at your
8//# option) any later version.
9//#
10//# This library is distributed in the hope that it will be useful, but WITHOUT
11//# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12//# FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library General Public
13//# License for more details.
14//#
15//# You should have received a copy of the GNU Library General Public License
16//# along with this library; if not, write to the Free Software Foundation,
17//# Inc., 675 Massachusetts Ave, Cambridge, MA 02139, USA.
18//#
19//# Correspondence concerning AIPS++ should be addressed as follows:
20//# Internet email: aips2-request@nrao.edu.
21//# Postal address: AIPS++ Project Office
22//# National Radio Astronomy Observatory
23//# 520 Edgemont Road
24//# Charlottesville, VA 22903-2475 USA
25//#
26//# $Id$
27
28#ifndef MS_MSFIELDGRAM_H
29#define MS_MSFIELDGRAM_H
30
31
32//# Includes
33#include <casacore/casa/aips.h>
34#include <casacore/casa/BasicSL/String.h>
35#include <casacore/ms/MSSel/MSFieldParse.h>
36
37namespace casacore { //# NAMESPACE CASACORE - BEGIN
38
39//# Forward Declarations
40class MeasurementSet;
41class TableExprNode;
42
43// <summary>
44// Global functions for flex/bison scanner/parser for MSFieldGram
45// </summary>
46
47// <use visibility=local>
48
49// <reviewed reviewer="" date="" tests="">
50// </reviewed>
51
52// <prerequisite>
53//# Classes you should understand before using this one.
54// <li> MSFieldGram.l and .y (flex and bison grammar)
55// </prerequisite>
56
57// <synopsis>
58// Global functions are needed to define the input of the flex scanner
59// and to start the bison parser.
60// The input is taken from a string.
61// </synopsis>
62
63// <motivation>
64// It is necessary to be able to give an image expression in ASCII.
65// This can be used in glish.
66// </motivation>
67// <todo asof="$DATE:$">
68//# A List of bugs, limitations, extensions or planned refinements.
69// </todo>
70
71
72// <group name=MSFieldGramFunctions>
74// Declare the bison parser (is implemented by bison command).
75 // TableExprNode msFieldGramParseCommand (const MeasurementSet *ms, const String& command);
76 // TableExprNode msFieldGramParseCommand (MSSelectableTable *ms, const String& command,Vector<Int>&);
77 // TableExprNode msFieldGramParseCommand (const MeasurementSet *ms, const String& command,Vector<Int>&);
78 TableExprNode msFieldGramParseCommand (const MSField& fieldSubTable, const TableExprNode& colAsTEN,
79 const String& command,Vector<Int>&);
81
82// The yyerror function for the parser.
83// It throws an exception with the current token.
84void MSFieldGramerror (const char*);
85
86// Give the table expression node.
89
90// Give the current position in the string.
91// This can be used when parse errors occur.
93
94// Declare the input routine for flex/bison.
95int msFieldGramInput (char* buf, int max_size);
96
97// A function to remove escaped characters.
98//String msFieldGramRemoveEscapes (const String& in);
99
100// A function to remove quotes from a quoted string.
101//String msFieldGramRemoveQuotes (const String& in);
102
103// </group>
104
105} //# NAMESPACE CASACORE - END
106
107#endif
Class to hold values from field grammar parser.
String: the storage and methods of handling collections of characters.
Definition String.h:225
this file contains all the compiler specific defines
Definition mainpage.dox:28
int Int
Definition aipstype.h:50
TableExprNode msFieldGramParseCommand(const MSField &fieldSubTable, const TableExprNode &colAsTEN, const String &command, Vector< Int > &)
Declare the bison parser (is implemented by bison command).
TableExprNode baseMSFieldGramParseCommand(MSFieldParse *parser, const String &command, Vector< Int > &)
Int & msFieldGramPosition()
Give the current position in the string.
const TableExprNode * msFieldGramParseNode()
Give the table expression node.
int msFieldGramInput(char *buf, int max_size)
Declare the input routine for flex/bison.
void MSFieldGramerror(const char *)
The yyerror function for the parser.