2009-06-02 09:51:38 -04:00
|
|
|
/*
|
2010-01-05 13:34:00 -05:00
|
|
|
* Copyright (C) 2009-2010 Julien BLACHE <jb@jblache.org>
|
2009-06-02 09:51:38 -04:00
|
|
|
*
|
|
|
|
|
* This program is free software; you can redistribute it and/or modify
|
|
|
|
|
* it under the terms of the GNU General Public License as published by
|
|
|
|
|
* the Free Software Foundation; either version 2 of the License, or
|
|
|
|
|
* (at your option) any later version.
|
|
|
|
|
*
|
|
|
|
|
* This program is distributed in the hope that it will be useful,
|
|
|
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
|
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
|
|
|
* GNU General Public License for more details.
|
|
|
|
|
*
|
|
|
|
|
* You should have received a copy of the GNU General Public License
|
|
|
|
|
* along with this program; if not, write to the Free Software
|
|
|
|
|
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
|
|
|
|
*/
|
|
|
|
|
|
|
|
|
|
grammar DAAP;
|
|
|
|
|
|
|
|
|
|
options {
|
|
|
|
|
output = AST;
|
|
|
|
|
ASTLabelType = pANTLR3_BASE_TREE;
|
|
|
|
|
language = C;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
query : expr NEWLINE? EOF -> expr
|
|
|
|
|
;
|
|
|
|
|
|
|
|
|
|
expr : aexpr (OPOR^ aexpr)*
|
|
|
|
|
;
|
|
|
|
|
|
|
|
|
|
aexpr : crit (OPAND^ crit)*
|
|
|
|
|
;
|
|
|
|
|
|
|
|
|
|
crit : LPAR expr RPAR -> expr
|
|
|
|
|
| STR
|
|
|
|
|
;
|
|
|
|
|
|
|
|
|
|
QUOTE : '\'';
|
|
|
|
|
LPAR : '(';
|
|
|
|
|
RPAR : ')';
|
|
|
|
|
|
|
|
|
|
OPAND : '+';
|
|
|
|
|
OPOR : ',';
|
|
|
|
|
|
|
|
|
|
NEWLINE : '\r'? '\n';
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
|
Unescaping adapted from (ported to the C runtime)
|
|
|
|
|
<http://stackoverflow.com/questions/504402/how-to-handle-escape-sequences-in-string-literals-in-antlr-3>
|
|
|
|
|
*/
|
|
|
|
|
STR
|
|
|
|
|
@init{ pANTLR3_STRING unesc = GETTEXT()->factory->newRaw(GETTEXT()->factory); }
|
|
|
|
|
: QUOTE ( reg = ~('\\' | '\'') { unesc->addc(unesc, reg); }
|
|
|
|
|
| esc = ESCAPED { unesc->appendS(unesc, GETTEXT()); } )+ QUOTE { SETTEXT(unesc); };
|
|
|
|
|
|
|
|
|
|
fragment
|
|
|
|
|
ESCAPED : '\\'
|
|
|
|
|
( '\\' { SETTEXT(GETTEXT()->factory->newStr8(GETTEXT()->factory, (pANTLR3_UINT8)"\\")); }
|
|
|
|
|
| '\'' { SETTEXT(GETTEXT()->factory->newStr8(GETTEXT()->factory, (pANTLR3_UINT8)"\'")); }
|
|
|
|
|
)
|
|
|
|
|
;
|
