-
-
Notifications
You must be signed in to change notification settings - Fork 3.8k
/
SelectionFilter.y
80 lines (61 loc) · 3.11 KB
/
SelectionFilter.y
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
/***************************************************************************
* 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; }
;
%%