aboutsummaryrefslogtreecommitdiffstats
path: root/contrib/libs/antlr4_cpp_runtime/src/BailErrorStrategy.h
diff options
context:
space:
mode:
authorvitalyisaev <vitalyisaev@ydb.tech>2023-11-30 13:26:22 +0300
committervitalyisaev <vitalyisaev@ydb.tech>2023-11-30 15:44:45 +0300
commit0a98fece5a9b54f16afeb3a94b3eb3105e9c3962 (patch)
tree291d72dbd7e9865399f668c84d11ed86fb190bbf /contrib/libs/antlr4_cpp_runtime/src/BailErrorStrategy.h
parentcb2c8d75065e5b3c47094067cb4aa407d4813298 (diff)
downloadydb-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.h59
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