| // Copyright 2017-2020 The Verible Authors. |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| |
| // This header defines constants common to all lexers and parsers. |
| |
| #ifndef VERIBLE_COMMON_TEXT_CONSTANTS_H_ |
| #define VERIBLE_COMMON_TEXT_CONSTANTS_H_ |
| |
| namespace verible { |
| |
| // This is the value of EOF token from all Flex-generated lexers. |
| // This is also the value expected by Bison-generated parsers for $end. |
| constexpr int TK_EOF = 0; |
| |
| // Language-specific tags for various nonterminals should be nonzero. |
| enum NodeEnum { |
| kUntagged = 0, |
| }; |
| |
| } // namespace verible |
| |
| #endif // VERIBLE_COMMON_TEXT_CONSTANTS_H_ |
