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author | vitalyisaev <vitalyisaev@ydb.tech> | 2023-11-30 13:26:22 +0300 |
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committer | vitalyisaev <vitalyisaev@ydb.tech> | 2023-11-30 15:44:45 +0300 |
commit | 0a98fece5a9b54f16afeb3a94b3eb3105e9c3962 (patch) | |
tree | 291d72dbd7e9865399f668c84d11ed86fb190bbf /contrib/libs/antlr4_cpp_runtime/src/BailErrorStrategy.h | |
parent | cb2c8d75065e5b3c47094067cb4aa407d4813298 (diff) | |
download | ydb-0a98fece5a9b54f16afeb3a94b3eb3105e9c3962.tar.gz |
YQ Connector:Use docker-compose in integrational tests
Diffstat (limited to 'contrib/libs/antlr4_cpp_runtime/src/BailErrorStrategy.h')
-rw-r--r-- | contrib/libs/antlr4_cpp_runtime/src/BailErrorStrategy.h | 59 |
1 files changed, 59 insertions, 0 deletions
diff --git a/contrib/libs/antlr4_cpp_runtime/src/BailErrorStrategy.h b/contrib/libs/antlr4_cpp_runtime/src/BailErrorStrategy.h new file mode 100644 index 0000000000..598f993022 --- /dev/null +++ b/contrib/libs/antlr4_cpp_runtime/src/BailErrorStrategy.h @@ -0,0 +1,59 @@ +/* Copyright (c) 2012-2017 The ANTLR Project. All rights reserved. + * Use of this file is governed by the BSD 3-clause license that + * can be found in the LICENSE.txt file in the project root. + */ + +#pragma once + +#include "DefaultErrorStrategy.h" + +namespace antlr4 { + + /** + * This implementation of {@link ANTLRErrorStrategy} responds to syntax errors + * by immediately canceling the parse operation with a + * {@link ParseCancellationException}. The implementation ensures that the + * {@link ParserRuleContext#exception} field is set for all parse tree nodes + * that were not completed prior to encountering the error. + * + * <p> + * This error strategy is useful in the following scenarios.</p> + * + * <ul> + * <li><strong>Two-stage parsing:</strong> This error strategy allows the first + * stage of two-stage parsing to immediately terminate if an error is + * encountered, and immediately fall back to the second stage. In addition to + * avoiding wasted work by attempting to recover from errors here, the empty + * implementation of {@link BailErrorStrategy#sync} improves the performance of + * the first stage.</li> + * <li><strong>Silent validation:</strong> When syntax errors are not being + * reported or logged, and the parse result is simply ignored if errors occur, + * the {@link BailErrorStrategy} avoids wasting work on recovering from errors + * when the result will be ignored either way.</li> + * </ul> + * + * <p> + * {@code myparser.setErrorHandler(new BailErrorStrategy());}</p> + * + * @see Parser#setErrorHandler(ANTLRErrorStrategy) + */ + class ANTLR4CPP_PUBLIC BailErrorStrategy : public DefaultErrorStrategy { + /// <summary> + /// Instead of recovering from exception {@code e}, re-throw it wrapped + /// in a <seealso cref="ParseCancellationException"/> so it is not caught by the + /// rule function catches. Use <seealso cref="Exception#getCause()"/> to get the + /// original <seealso cref="RecognitionException"/>. + /// </summary> + public: + virtual void recover(Parser *recognizer, std::exception_ptr e) override; + + /// Make sure we don't attempt to recover inline; if the parser + /// successfully recovers, it won't throw an exception. + virtual Token* recoverInline(Parser *recognizer) override; + + /// <summary> + /// Make sure we don't attempt to recover from problems in subrules. </summary> + virtual void sync(Parser *recognizer) override; + }; + +} // namespace antlr4 |