File size: 3,239 Bytes
985c397 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 | /* SPDX-License-Identifier: LGPL-2.1-or-later */
/***************************************************************************
* Copyright (c) 2010 Jürgen Riegel <juergen.riegel@web.de> *
* *
* This library is free software; you can redistribute it and/or *
* modify it under the terms of the GNU Library General Public *
* License as published by the Free Software Foundation; either *
* version 2 of the License, or (at your option) any later version. *
* *
* This library 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 Library General Public License for more details. *
* *
* You should have received a copy of the GNU Library General Public *
* License along with this library; see the file COPYING.LIB. If not, *
* write to the Free Software Foundation, Inc., 59 Temple Place, *
* Suite 330, Boston, MA 02111-1307, USA *
* *
***************************************************************************/
/* Parser for the FreeCAD selection filter language */
/* bison -o SelectionFilter.tab.c SelectionFilter.y */
/* Represents the many different ways we can access our data */
%union {
std::string *string;
Node_Object *object;
Node_Slice *slice;
Node_Block *block;
int token;
int number;
}
/* Define our terminal symbols (tokens). This should
match our tokens.l lex file. We also define the node type
they represent.
*/
%token <string> TIDENTIFIER
%token <token> TSUB TSELECT TCOUNT TSLICE TNAMESPACE
%token <number> TNUMBER
/* Define the type of node our nonterminal symbols represent.
The types refer to the %union declaration above.
*/
%type <slice> count
%type <object> matchline
%type <string> type subname
%type <block> matchlines block
%start filter
%%
type : TSELECT TIDENTIFIER { $$ = $2; }
| TSELECT TIDENTIFIER TNAMESPACE TIDENTIFIER { $$ = StringFactory::New(*$2 + "::" + *$4); }
subname : { $$ = 0; }
| TSUB TIDENTIFIER { $$ = $2; }
count : { $$ = 0; }
| TCOUNT TNUMBER TSLICE TNUMBER { $$ = new Node_Slice($2,$4); }
| TCOUNT TNUMBER TSLICE { $$ = new Node_Slice($2); }
| TCOUNT TNUMBER { $$ = new Node_Slice($2,$2); }
matchline : type subname count { $$ = new Node_Object($1,$2,$3); }
matchlines : matchline { $$ = new Node_Block($1); }
| matchlines matchline { $$ = $1 ; $$->Objects.emplace_back($2); }
block : matchlines { $$ = $1; }
filter: block { TopBlock = $1; }
;
%%
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