1 /* 2 * Copyright (C) 2018 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 LIBTEXTCLASSIFIER_UTILS_GRAMMAR_SEMANTICS_EVAL_CONTEXT_H_ 18 #define LIBTEXTCLASSIFIER_UTILS_GRAMMAR_SEMANTICS_EVAL_CONTEXT_H_ 19 20 #include <unordered_map> 21 22 #include "utils/grammar/parsing/parse-tree.h" 23 #include "utils/grammar/semantics/value.h" 24 #include "utils/grammar/text-context.h" 25 26 namespace libtextclassifier3::grammar { 27 28 // Context for the evaluation of the semantic expression of a rule parse tree. 29 // This contains data about the evaluated constituents (named parts) of a rule 30 // and it's match. 31 struct EvalContext { 32 // The input text. 33 const TextContext* text_context = nullptr; 34 35 // The syntactic parse tree that is begin evaluated. 36 const ParseTree* parse_tree = nullptr; 37 38 // A map of an id of a rule constituent (named part of a rule match) to it's 39 // evaluated semantic value. 40 std::unordered_map<int, const SemanticValue*> rule_constituents; 41 }; 42 43 } // namespace libtextclassifier3::grammar 44 45 #endif // LIBTEXTCLASSIFIER_UTILS_GRAMMAR_SEMANTICS_EVAL_CONTEXT_H_ 46