149 lines
2.9 KiB
Plaintext
149 lines
2.9 KiB
Plaintext
/*
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* Copyright (C) 2009-2010 Julien BLACHE <jb@jblache.org>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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grammar RSP;
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options {
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output = AST;
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ASTLabelType = pANTLR3_BASE_TREE;
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language = C;
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}
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query : expr NEWLINE? EOF -> expr
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;
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expr : aexpr (OR^ aexpr)*
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;
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aexpr : crit (AND^ crit)*
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;
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crit : LPAR expr RPAR -> expr
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| strcrit
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| intcrit
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| datecrit
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;
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strcrit : FIELD strop STR -> ^(strop FIELD STR)
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| FIELD NOT strop STR -> ^(NOT ^(strop FIELD STR))
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;
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strop : EQUAL
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| INCLUDES
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| STARTSW
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| ENDSW
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;
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intcrit : FIELD intop INT -> ^(intop FIELD INT)
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| FIELD NOT intop INT -> ^(NOT ^(intop FIELD INT))
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;
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intop : EQUAL
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| LESS
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| GREATER
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| LTE
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| GTE
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;
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datecrit: FIELD dateop datespec -> ^(dateop FIELD datespec)
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;
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dateop : BEFORE
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| AFTER
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;
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datespec: dateref
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| INT dateintval dateop dateref -> ^(dateop dateref INT dateintval)
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;
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dateref : DATE
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| TODAY
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;
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dateintval
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: DAY
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| WEEK
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| MONTH
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| YEAR
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;
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QUOTE : '"';
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LPAR : '(';
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RPAR : ')';
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AND : 'and';
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OR : 'or';
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NOT : '!';
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/* Both string & int */
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EQUAL : '=';
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/* String */
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INCLUDES: 'includes';
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STARTSW : 'startswith';
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ENDSW : 'endswith';
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/* Int */
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GREATER : '>';
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LESS : '<';
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GTE : '>=';
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LTE : '<=';
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/* Date */
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BEFORE : 'before';
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AFTER : 'after';
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DAY : 'day' | 'days';
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WEEK : 'week' | 'weeks';
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MONTH : 'month' | 'months';
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YEAR : 'year' | 'years';
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TODAY : 'today';
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NEWLINE : '\r'? '\n';
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WS : (' ' | '\t') { $channel = HIDDEN; };
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FIELD : 'a'..'z' ('a'..'z' | '_')* 'a'..'z';
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INT : DIGIT19 DIGIT09*;
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/* YYYY-MM-DD */
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DATE : DIGIT19 DIGIT09 DIGIT09 DIGIT09 '-' ('0' DIGIT19 | '1' '0'..'2') '-' ('0' DIGIT19 | '1'..'2' DIGIT09 | '3' '0'..'1');
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/*
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Unescaping adapted from (ported to the C runtime)
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<http://stackoverflow.com/questions/504402/how-to-handle-escape-sequences-in-string-literals-in-antlr-3>
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*/
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STR
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@init{ pANTLR3_STRING unesc = GETTEXT()->factory->newRaw(GETTEXT()->factory); }
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: QUOTE ( reg = ~('\\' | '"') { unesc->addc(unesc, reg); }
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| esc = ESCAPED { unesc->appendS(unesc, GETTEXT()); } )+ QUOTE { SETTEXT(unesc); }
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;
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fragment
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ESCAPED : '\\'
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( '\\' { SETTEXT(GETTEXT()->factory->newStr8(GETTEXT()->factory, (pANTLR3_UINT8)"\\")); }
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| '"' { SETTEXT(GETTEXT()->factory->newStr8(GETTEXT()->factory, (pANTLR3_UINT8)"\"")); }
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)
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;
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fragment
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DIGIT09 : '0'..'9';
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fragment
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DIGIT19 : '1'..'9';
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