Implement filter expression to bytecode compiler in liblttng-ctl

[lttng-tools.git] / src / lib / lttng-ctl / filter-ir.h

diff --git a/src/lib/lttng-ctl/filter-ir.h b/src/lib/lttng-ctl/filter-ir.h
new file mode 100644 (file)
index 0000000..2ec4cc5
--- /dev/null
+++ b/src/lib/lttng-ctl/filter-ir.h
@@ -0,0 +1,102 @@
+#ifndef _FILTER_IR_H
+#define _FILTER_IR_H
+
+/*
+ * filter-ir.h
+ *
+ * LTTng filter ir
+ *
+ * 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 "filter-ast.h"
+
+enum ir_op_signedness {
+       IR_SIGN_UNKNOWN = 0,
+       IR_SIGNED,
+       IR_UNSIGNED,
+       IR_SIGN_DYN,            /* signedness determined dynamically */
+};
+
+enum ir_data_type {
+       IR_DATA_UNKNOWN = 0,
+       IR_DATA_STRING,
+       IR_DATA_NUMERIC,        /* numeric and boolean */
+       IR_DATA_FIELD_REF,
+};
+
+enum ir_op_type {
+       IR_OP_UNKNOWN = 0,
+       IR_OP_ROOT,
+       IR_OP_LOAD,
+       IR_OP_UNARY,
+       IR_OP_BINARY,
+       IR_OP_LOGICAL,
+};
+
+/* left or right child */
+enum ir_side {
+       IR_SIDE_UNKNOWN = 0,
+       IR_LEFT,
+       IR_RIGHT,
+};
+
+struct ir_op_root {
+       struct ir_op *child;
+};
+
+struct ir_op_load {
+       union {
+               char *string;
+               int64_t num;
+               char *ref;
+       } u;
+};
+
+struct ir_op_unary {
+       enum unary_op_type type;
+       struct ir_op *child;
+};
+
+struct ir_op_binary {
+       enum op_type type;
+       struct ir_op *left;
+       struct ir_op *right;
+};
+
+struct ir_op_logical {
+       enum op_type type;
+       struct ir_op *left;
+       struct ir_op *right;
+};
+
+struct ir_op {
+       /* common to all ops */
+       enum ir_op_type op;
+       enum ir_data_type data_type;
+       enum ir_op_signedness signedness;
+       enum ir_side side;
+
+       union {
+               struct ir_op_root root;
+               struct ir_op_load load;
+               struct ir_op_unary unary;
+               struct ir_op_binary binary;
+               struct ir_op_logical logical;
+       } u;
+};
+
+#endif /* _FILTER_IR_H */