src/lib/lttng-ctl/filter/filter-ir.h

   1 #ifndef _FILTER_IR_H
   2 #define _FILTER_IR_H
   3
   4 /*
   5  * filter-ir.h
   6  *
   7  * LTTng filter ir
   8  *
   9  * Copyright 2012 - Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
  10  *
  11  * This library is free software; you can redistribute it and/or modify it
  12  * under the terms of the GNU Lesser General Public License, version 2.1 only,
  13  * as published by the Free Software Foundation.
  14  *
  15  * This library is distributed in the hope that it will be useful,
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  18  * Lesser General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU Lesser General Public License
  21  * along with this library; if not, write to the Free Software Foundation,
  22  * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  23  */
  24
  25 #include "filter-ast.h"
  26
  27 enum ir_op_signedness {
  28         IR_SIGN_UNKNOWN = 0,
  29         IR_SIGNED,
  30         IR_UNSIGNED,
  31         IR_SIGN_DYN,            /* signedness determined dynamically */
  32 };
  33
  34 enum ir_data_type {
  35         IR_DATA_UNKNOWN = 0,
  36         IR_DATA_STRING,
  37         IR_DATA_NUMERIC,        /* numeric and boolean */
  38         IR_DATA_FLOAT,
  39         IR_DATA_FIELD_REF,
  40         IR_DATA_GET_CONTEXT_REF,
  41 };
  42
  43 enum ir_op_type {
  44         IR_OP_UNKNOWN = 0,
  45         IR_OP_ROOT,
  46         IR_OP_LOAD,
  47         IR_OP_UNARY,
  48         IR_OP_BINARY,
  49         IR_OP_LOGICAL,
  50 };
  51
  52 /* left or right child */
  53 enum ir_side {
  54         IR_SIDE_UNKNOWN = 0,
  55         IR_LEFT,
  56         IR_RIGHT,
  57 };
  58
  59 struct ir_op_root {
  60         struct ir_op *child;
  61 };
  62
  63 struct ir_op_load {
  64         union {
  65                 char *string;
  66                 int64_t num;
  67                 double flt;
  68                 char *ref;
  69         } u;
  70 };
  71
  72 struct ir_op_unary {
  73         enum unary_op_type type;
  74         struct ir_op *child;
  75 };
  76
  77 struct ir_op_binary {
  78         enum op_type type;
  79         struct ir_op *left;
  80         struct ir_op *right;
  81 };
  82
  83 struct ir_op_logical {
  84         enum op_type type;
  85         struct ir_op *left;
  86         struct ir_op *right;
  87 };
  88
  89 struct ir_op {
  90         /* common to all ops */
  91         enum ir_op_type op;
  92         enum ir_data_type data_type;
  93         enum ir_op_signedness signedness;
  94         enum ir_side side;
  95
  96         union {
  97                 struct ir_op_root root;
  98                 struct ir_op_load load;
  99                 struct ir_op_unary unary;
 100                 struct ir_op_binary binary;
 101                 struct ir_op_logical logical;
 102         } u;
 103 };
 104
 105 #endif /* _FILTER_IR_H */