Filter: index array, sequences, implement bitwise binary operators
[lttng-tools.git] / src / lib / lttng-ctl / filter / filter-visitor-ir-check-binary-op-nesting.c
1 /*
2 * filter-visitor-ir-check-binary-op-nesting.c
3 *
4 * LTTng filter IR check binary op nesting
5 *
6 * Copyright 2012 - Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
7 *
8 * This library is free software; you can redistribute it and/or modify it
9 * under the terms of the GNU Lesser General Public License, version 2.1 only,
10 * as published by the Free Software Foundation.
11 *
12 * This library is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
16 *
17 * You should have received a copy of the GNU Lesser General Public License
18 * along with this library; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20 */
21
22 #include <stdio.h>
23 #include <unistd.h>
24 #include <string.h>
25 #include <stdlib.h>
26 #include <assert.h>
27 #include <errno.h>
28 #include <inttypes.h>
29 #include "filter-ast.h"
30 #include "filter-parser.h"
31 #include "filter-ir.h"
32
33 #include <common/macros.h>
34
35 static
36 int check_bin_op_nesting_recursive(struct ir_op *node, int nesting)
37 {
38 switch (node->op) {
39 case IR_OP_UNKNOWN:
40 default:
41 fprintf(stderr, "[error] %s: unknown op type\n", __func__);
42 return -EINVAL;
43
44 case IR_OP_ROOT:
45 return check_bin_op_nesting_recursive(node->u.root.child,
46 nesting);
47 case IR_OP_LOAD:
48 return 0;
49 case IR_OP_UNARY:
50 return check_bin_op_nesting_recursive(node->u.unary.child,
51 nesting);
52 case IR_OP_BINARY:
53 {
54 int ret;
55
56 ret = check_bin_op_nesting_recursive(node->u.binary.left,
57 nesting + 1);
58 if (ret)
59 return ret;
60 return check_bin_op_nesting_recursive(node->u.binary.right,
61 nesting + 1);
62 }
63 case IR_OP_LOGICAL:
64 {
65 int ret;
66
67 ret = check_bin_op_nesting_recursive(node->u.logical.left,
68 nesting);
69 if (ret)
70 return ret;
71 return check_bin_op_nesting_recursive(node->u.logical.right,
72 nesting);
73 }
74 }
75 }
76
77 LTTNG_HIDDEN
78 int filter_visitor_ir_check_binary_op_nesting(struct filter_parser_ctx *ctx)
79 {
80 return check_bin_op_nesting_recursive(ctx->ir_root, 0);
81 }
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