X-Git-Url: https://git.lttng.org/?a=blobdiff_plain;f=src%2Flib%2Flttng-ctl%2Ffilter-visitor-ir-check-binary-comparator.c;fp=src%2Flib%2Flttng-ctl%2Ffilter-visitor-ir-check-binary-comparator.c;h=fff9b51689b587f0df69705aae1b54990b57232c;hb=953192ba6eb2118c22bcfcb4bcd813f141b407e7;hp=0000000000000000000000000000000000000000;hpb=e74ecf5ad921a3edccacad4d79deb484cd19b1d5;p=lttng-tools.git

diff --git a/src/lib/lttng-ctl/filter-visitor-ir-check-binary-comparator.c b/src/lib/lttng-ctl/filter-visitor-ir-check-binary-comparator.c
new file mode 100644
index 000000000..fff9b5168
--- /dev/null
+++ b/src/lib/lttng-ctl/filter-visitor-ir-check-binary-comparator.c
@@ -0,0 +1,82 @@
+/*
+ * filter-visitor-ir-check-binary-comparator.c
+ *
+ * LTTng filter IR check binary comparator
+ *
+ * Copyright 2012 - Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
+ *
+ * This library is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU Lesser General Public License, version 2.1 only,
+ * as published by the Free Software Foundation.
+ *
+ * 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this library; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include <stdio.h>
+#include <unistd.h>
+#include <string.h>
+#include <stdlib.h>
+#include <assert.h>
+#include <errno.h>
+#include <inttypes.h>
+#include "filter-parser.h"
+#include "filter-ast.h"
+#include "filter-ir.h"
+
+static
+int check_bin_comparator(struct ir_op *node)
+{
+	switch (node->op) {
+	case IR_OP_UNKNOWN:
+	default:
+		fprintf(stderr, "[error] %s: unknown op type\n", __func__);
+		return -EINVAL;
+
+	case IR_OP_ROOT:
+		return check_bin_comparator(node->u.root.child);
+	case IR_OP_LOAD:
+		return 0;
+	case IR_OP_UNARY:
+		return check_bin_comparator(node->u.unary.child);
+	case IR_OP_BINARY:
+	{
+		int ret;
+
+		if (node->u.binary.left->data_type == IR_DATA_STRING
+				|| node->u.binary.right->data_type
+					== IR_DATA_STRING) {
+			if (node->u.binary.type != AST_OP_EQ
+					&& node->u.binary.type != AST_OP_NE) {
+				fprintf(stderr, "[error] Only '==' and '!=' comparators are allowed for strings\n");
+				return -EINVAL;
+			}
+		}
+
+		ret = check_bin_comparator(node->u.binary.left);
+		if (ret)
+			return ret;
+		return check_bin_comparator(node->u.binary.right);
+	}
+	case IR_OP_LOGICAL:
+	{
+		int ret;
+
+		ret = check_bin_comparator(node->u.logical.left);
+		if (ret)
+			return ret;
+		return check_bin_comparator(node->u.logical.right);
+	}
+	}
+}
+
+int filter_visitor_ir_check_binary_comparator(struct filter_parser_ctx *ctx)
+{
+	return check_bin_comparator(ctx->ir_root);
+}