| 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 | * SPDX-License-Identifier: LGPL-2.1-only |
| 12 | * |
| 13 | */ |
| 14 | |
| 15 | #include "filter-ast.h" |
| 16 | |
| 17 | enum ir_op_signedness { |
| 18 | IR_SIGN_UNKNOWN = 0, |
| 19 | IR_SIGNED, |
| 20 | IR_UNSIGNED, |
| 21 | IR_SIGN_DYN, /* signedness determined dynamically */ |
| 22 | }; |
| 23 | |
| 24 | enum ir_data_type { |
| 25 | IR_DATA_UNKNOWN = 0, |
| 26 | IR_DATA_STRING, |
| 27 | IR_DATA_NUMERIC, /* numeric and boolean */ |
| 28 | IR_DATA_FLOAT, |
| 29 | IR_DATA_FIELD_REF, |
| 30 | IR_DATA_GET_CONTEXT_REF, |
| 31 | IR_DATA_EXPRESSION, |
| 32 | }; |
| 33 | |
| 34 | static inline |
| 35 | const char *ir_data_type_str(enum ir_data_type type) |
| 36 | { |
| 37 | switch (type) { |
| 38 | case IR_DATA_UNKNOWN: |
| 39 | return "IR_DATA_UNKNOWN"; |
| 40 | case IR_DATA_STRING: |
| 41 | return "IR_DATA_STRING"; |
| 42 | case IR_DATA_NUMERIC: |
| 43 | return "IR_DATA_NUMERIC"; |
| 44 | case IR_DATA_FLOAT: |
| 45 | return "IR_DATA_FLOAT"; |
| 46 | case IR_DATA_FIELD_REF: |
| 47 | return "IR_DATA_FIELD_REF"; |
| 48 | case IR_DATA_GET_CONTEXT_REF: |
| 49 | return "IR_DATA_GET_CONTEXT_REF"; |
| 50 | case IR_DATA_EXPRESSION: |
| 51 | return "IR_DATA_EXPRESSION"; |
| 52 | default: |
| 53 | abort(); |
| 54 | } |
| 55 | } |
| 56 | |
| 57 | enum ir_op_type { |
| 58 | IR_OP_UNKNOWN = 0, |
| 59 | IR_OP_ROOT, |
| 60 | IR_OP_LOAD, |
| 61 | IR_OP_UNARY, |
| 62 | IR_OP_BINARY, |
| 63 | IR_OP_LOGICAL, |
| 64 | }; |
| 65 | |
| 66 | static inline |
| 67 | const char *ir_op_type_str(enum ir_op_type type) |
| 68 | { |
| 69 | switch (type) { |
| 70 | case IR_OP_UNKNOWN: |
| 71 | return "IR_OP_UNKNOWN"; |
| 72 | case IR_OP_ROOT: |
| 73 | return "IR_OP_ROOT"; |
| 74 | case IR_OP_LOAD: |
| 75 | return "IR_OP_LOAD"; |
| 76 | case IR_OP_UNARY: |
| 77 | return "IR_OP_UNARY"; |
| 78 | case IR_OP_BINARY: |
| 79 | return "IR_OP_BINARY"; |
| 80 | case IR_OP_LOGICAL: |
| 81 | return "IR_OP_LOGICAL"; |
| 82 | default: |
| 83 | abort(); |
| 84 | } |
| 85 | } |
| 86 | |
| 87 | /* left or right child */ |
| 88 | enum ir_side { |
| 89 | IR_SIDE_UNKNOWN = 0, |
| 90 | IR_LEFT, |
| 91 | IR_RIGHT, |
| 92 | }; |
| 93 | |
| 94 | enum ir_load_string_type { |
| 95 | /* Plain, no globbing at all: `hello world`. */ |
| 96 | IR_LOAD_STRING_TYPE_PLAIN = 0, |
| 97 | |
| 98 | /* Star at the end only: `hello *`. */ |
| 99 | IR_LOAD_STRING_TYPE_GLOB_STAR_END, |
| 100 | |
| 101 | /* At least one star, anywhere, but not at the end only: `he*wor*`. */ |
| 102 | IR_LOAD_STRING_TYPE_GLOB_STAR, |
| 103 | }; |
| 104 | |
| 105 | struct ir_op_root { |
| 106 | struct ir_op *child; |
| 107 | }; |
| 108 | |
| 109 | enum ir_load_expression_type { |
| 110 | IR_LOAD_EXPRESSION_GET_CONTEXT_ROOT, |
| 111 | IR_LOAD_EXPRESSION_GET_APP_CONTEXT_ROOT, |
| 112 | IR_LOAD_EXPRESSION_GET_PAYLOAD_ROOT, |
| 113 | IR_LOAD_EXPRESSION_GET_SYMBOL, |
| 114 | IR_LOAD_EXPRESSION_GET_INDEX, |
| 115 | IR_LOAD_EXPRESSION_LOAD_FIELD, |
| 116 | }; |
| 117 | |
| 118 | static inline |
| 119 | const char *ir_load_expression_type_str(enum ir_load_expression_type type) |
| 120 | { |
| 121 | switch (type) { |
| 122 | case IR_LOAD_EXPRESSION_GET_CONTEXT_ROOT: |
| 123 | return "IR_LOAD_EXPRESSION_GET_CONTEXT_ROOT"; |
| 124 | case IR_LOAD_EXPRESSION_GET_APP_CONTEXT_ROOT: |
| 125 | return "IR_LOAD_EXPRESSION_GET_APP_CONTEXT_ROOT"; |
| 126 | case IR_LOAD_EXPRESSION_GET_PAYLOAD_ROOT: |
| 127 | return "IR_LOAD_EXPRESSION_GET_PAYLOAD_ROOT"; |
| 128 | case IR_LOAD_EXPRESSION_GET_SYMBOL: |
| 129 | return "IR_LOAD_EXPRESSION_GET_SYMBOL"; |
| 130 | case IR_LOAD_EXPRESSION_GET_INDEX: |
| 131 | return "IR_LOAD_EXPRESSION_GET_INDEX"; |
| 132 | case IR_LOAD_EXPRESSION_LOAD_FIELD: |
| 133 | return "IR_LOAD_EXPRESSION_LOAD_FIELD"; |
| 134 | default: |
| 135 | abort(); |
| 136 | } |
| 137 | } |
| 138 | |
| 139 | struct ir_load_expression_op { |
| 140 | struct ir_load_expression_op *next; |
| 141 | enum ir_load_expression_type type; |
| 142 | union { |
| 143 | char *symbol; |
| 144 | uint64_t index; |
| 145 | } u; |
| 146 | }; |
| 147 | |
| 148 | struct ir_load_expression { |
| 149 | struct ir_load_expression_op *child; |
| 150 | }; |
| 151 | |
| 152 | struct ir_op_load { |
| 153 | union { |
| 154 | struct { |
| 155 | enum ir_load_string_type type; |
| 156 | char *value; |
| 157 | } string; |
| 158 | int64_t num; |
| 159 | double flt; |
| 160 | char *ref; |
| 161 | struct ir_load_expression *expression; |
| 162 | } u; |
| 163 | }; |
| 164 | |
| 165 | struct ir_op_unary { |
| 166 | enum unary_op_type type; |
| 167 | struct ir_op *child; |
| 168 | }; |
| 169 | |
| 170 | struct ir_op_binary { |
| 171 | enum op_type type; |
| 172 | struct ir_op *left; |
| 173 | struct ir_op *right; |
| 174 | }; |
| 175 | |
| 176 | struct ir_op_logical { |
| 177 | enum op_type type; |
| 178 | struct ir_op *left; |
| 179 | struct ir_op *right; |
| 180 | }; |
| 181 | |
| 182 | struct ir_op { |
| 183 | /* common to all ops */ |
| 184 | enum ir_op_type op; |
| 185 | enum ir_data_type data_type; |
| 186 | enum ir_op_signedness signedness; |
| 187 | enum ir_side side; |
| 188 | |
| 189 | union { |
| 190 | struct ir_op_root root; |
| 191 | struct ir_op_load load; |
| 192 | struct ir_op_unary unary; |
| 193 | struct ir_op_binary binary; |
| 194 | struct ir_op_logical logical; |
| 195 | } u; |
| 196 | }; |
| 197 | |
| 198 | #endif /* _FILTER_IR_H */ |