1 /* 2 * Copyright (C) 2021 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #ifndef SRC_PROTOZERO_FILTERING_FILTER_BYTECODE_COMMON_H_ 18 #define SRC_PROTOZERO_FILTERING_FILTER_BYTECODE_COMMON_H_ 19 20 #include <stdint.h> 21 22 namespace protozero { 23 24 enum FilterOpcode : uint32_t { 25 // The immediate value is 0 in this case. 26 kFilterOpcode_EndOfMessage = 0, 27 28 // The immediate value is the id of the allowed field. 29 kFilterOpcode_SimpleField = 1, 30 31 // The immediate value is the start of the range. The next word (without 32 // any shifting) is the length of the range. 33 kFilterOpcode_SimpleFieldRange = 2, 34 35 // The immediate value is the id of the allowed field. The next word 36 // (without any shifting) is the index of the filter that should be used to 37 // recurse into the nested message. 38 kFilterOpcode_NestedField = 3, 39 }; 40 } // namespace protozero 41 42 #endif // SRC_PROTOZERO_FILTERING_FILTER_BYTECODE_COMMON_H_ 43