| /* 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; } | |
| ; | |
| %% | |