| 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 | enum ir_op_type { |
| 35 | IR_OP_UNKNOWN = 0, |
| 36 | IR_OP_ROOT, |
| 37 | IR_OP_LOAD, |
| 38 | IR_OP_UNARY, |
| 39 | IR_OP_BINARY, |
| 40 | IR_OP_LOGICAL, |
| 41 | }; |
| 42 | |
| 43 | /* left or right child */ |
| 44 | enum ir_side { |
| 45 | IR_SIDE_UNKNOWN = 0, |
| 46 | IR_LEFT, |
| 47 | IR_RIGHT, |
| 48 | }; |
| 49 | |
| 50 | enum ir_load_string_type { |
| 51 | /* Plain, no globbing at all: `hello world`. */ |
| 52 | IR_LOAD_STRING_TYPE_PLAIN = 0, |
| 53 | |
| 54 | /* Star at the end only: `hello *`. */ |
| 55 | IR_LOAD_STRING_TYPE_GLOB_STAR_END, |
| 56 | |
| 57 | /* At least one star, anywhere, but not at the end only: `he*wor*`. */ |
| 58 | IR_LOAD_STRING_TYPE_GLOB_STAR, |
| 59 | }; |
| 60 | |
| 61 | struct ir_op_root { |
| 62 | struct ir_op *child; |
| 63 | }; |
| 64 | |
| 65 | enum ir_load_expression_type { |
| 66 | IR_LOAD_EXPRESSION_GET_CONTEXT_ROOT, |
| 67 | IR_LOAD_EXPRESSION_GET_APP_CONTEXT_ROOT, |
| 68 | IR_LOAD_EXPRESSION_GET_PAYLOAD_ROOT, |
| 69 | IR_LOAD_EXPRESSION_GET_SYMBOL, |
| 70 | IR_LOAD_EXPRESSION_GET_INDEX, |
| 71 | IR_LOAD_EXPRESSION_LOAD_FIELD, |
| 72 | }; |
| 73 | |
| 74 | struct ir_load_expression_op { |
| 75 | struct ir_load_expression_op *next; |
| 76 | enum ir_load_expression_type type; |
| 77 | union { |
| 78 | char *symbol; |
| 79 | uint64_t index; |
| 80 | } u; |
| 81 | }; |
| 82 | |
| 83 | struct ir_load_expression { |
| 84 | struct ir_load_expression_op *child; |
| 85 | }; |
| 86 | |
| 87 | struct ir_op_load { |
| 88 | union { |
| 89 | struct { |
| 90 | enum ir_load_string_type type; |
| 91 | char *value; |
| 92 | } string; |
| 93 | int64_t num; |
| 94 | double flt; |
| 95 | char *ref; |
| 96 | struct ir_load_expression *expression; |
| 97 | } u; |
| 98 | }; |
| 99 | |
| 100 | struct ir_op_unary { |
| 101 | enum unary_op_type type; |
| 102 | struct ir_op *child; |
| 103 | }; |
| 104 | |
| 105 | struct ir_op_binary { |
| 106 | enum op_type type; |
| 107 | struct ir_op *left; |
| 108 | struct ir_op *right; |
| 109 | }; |
| 110 | |
| 111 | struct ir_op_logical { |
| 112 | enum op_type type; |
| 113 | struct ir_op *left; |
| 114 | struct ir_op *right; |
| 115 | }; |
| 116 | |
| 117 | struct ir_op { |
| 118 | /* common to all ops */ |
| 119 | enum ir_op_type op; |
| 120 | enum ir_data_type data_type; |
| 121 | enum ir_op_signedness signedness; |
| 122 | enum ir_side side; |
| 123 | |
| 124 | union { |
| 125 | struct ir_op_root root; |
| 126 | struct ir_op_load load; |
| 127 | struct ir_op_unary unary; |
| 128 | struct ir_op_binary binary; |
| 129 | struct ir_op_logical logical; |
| 130 | } u; |
| 131 | }; |
| 132 | |
| 133 | #endif /* _FILTER_IR_H */ |