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src/parser.h
49 строк
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zufuliu
Add default virtual destructor for `Parser` class.
09 дек 2024, 13:48
09 дек 2024, 13:48
32e9958
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// Copyright 2018 Google Inc. All Rights Reserved. // // 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. #ifndef NINJA_PARSER_H_ #define NINJA_PARSER_H_ #include <string> #include "lexer.h" struct FileReader; struct State; /// Base class for parsers. struct Parser { Parser(State* state, FileReader* file_reader) : state_(state), file_reader_(file_reader) {} virtual ~Parser() {} /// Load and parse a file. bool Load(const std::string& filename, std::string* err, Lexer* parent = NULL); protected: /// If the next token is not \a expected, produce an error string /// saying "expected foo, got bar". bool ExpectToken(Lexer::Token expected, std::string* err); State* state_; FileReader* file_reader_; Lexer lexer_; private: /// Parse a file, given its contents as a string. virtual bool Parse(const std::string& filename, const std::string& input, std::string* err) = 0; }; #endif // NINJA_PARSER_H_