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1 | /* This file is part of the Linux Trace Toolkit viewer |
2 | * Copyright (C) 2003-2004 Michel Dagenais |
3 | * |
4 | * This program is free software; you can redistribute it and/or modify |
5 | * it under the terms of the GNU General Public License Version 2 as |
6 | * published by the Free Software Foundation; |
7 | * |
8 | * This program is distributed in the hope that it will be useful, |
9 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
11 | * GNU General Public License for more details. |
12 | * |
13 | * You should have received a copy of the GNU General Public License |
14 | * along with this program; if not, write to the Free Software |
15 | * Foundation, Inc., 59 Temple Place - Suite 330, Boston, |
16 | * MA 02111-1307, USA. |
17 | */ |
18 | |
48f6f3c2 |
19 | |
20 | consist in AND, OR and NOT nested expressions, forming a tree with |
21 | simple relations as leaves. The simple relations test is a field |
22 | in an event is equal, not equal, smaller, smaller or equal, larger, or |
23 | larger or equal to a specified value. */ |
24 | |
25 | typedef enum _lttv_expression_op |
26 | { LTTV_FIELD_EQ, |
27 | LTTV_FIELD_NE, |
28 | LTTV_FIELD_LT, |
29 | LTTV_FIELD_LE, |
30 | LTTV_FIELD_GT, |
31 | LTTV_FIELD_GE |
32 | } lttv_expression_op; |
33 | |
34 | typedef _lttv_simple_expression |
35 | { lttv_expression_op op; |
36 | char *field_name; |
37 | char *value; |
38 | } lttv_simple_expression; |
39 | |
40 | typedef _lttv_expression_type |
41 | { LTTV_EXPRESSION, |
42 | LTTV_SIMPLE_EXPRESSION |
43 | |
44 | } |
45 | typedef struct _lttv_expression |
46 | { bool or; |
47 | bool not; |
48 | bool simple_expression; |
49 | union |
50 | { lttv_expression *e; |
51 | lttv_field_relation *se; |
52 | } e; |
53 | } lttv_expression; |
54 | |
55 | read_token |
56 | |
57 | read_expression |
58 | ( read expr ) |
59 | simple expr [ op expr ] |
60 | |
61 | read_simple_expression |
62 | read_field_path [ rel value ] |
63 | |
64 | read_field_path |
65 | read_field_component [. field path] |
66 | |
67 | read_field_component |
68 | name [ \[ value \] ] |
69 | |
70 | data struct: |
71 | and/or(left/right) |
72 | not(child) |
73 | op(left/right) |
74 | path(component...) -> field |
75 | |
76 | |