diff options
| author | vitalyisaev <[email protected]> | 2023-11-30 13:26:22 +0300 |
|---|---|---|
| committer | vitalyisaev <[email protected]> | 2023-11-30 15:44:45 +0300 |
| commit | 0a98fece5a9b54f16afeb3a94b3eb3105e9c3962 (patch) | |
| tree | 291d72dbd7e9865399f668c84d11ed86fb190bbf /contrib/libs/antlr4_cpp_runtime/src/Token.h | |
| parent | cb2c8d75065e5b3c47094067cb4aa407d4813298 (diff) | |
YQ Connector:Use docker-compose in integrational tests
Diffstat (limited to 'contrib/libs/antlr4_cpp_runtime/src/Token.h')
| -rw-r--r-- | contrib/libs/antlr4_cpp_runtime/src/Token.h | 92 |
1 files changed, 92 insertions, 0 deletions
diff --git a/contrib/libs/antlr4_cpp_runtime/src/Token.h b/contrib/libs/antlr4_cpp_runtime/src/Token.h new file mode 100644 index 00000000000..832db740b35 --- /dev/null +++ b/contrib/libs/antlr4_cpp_runtime/src/Token.h @@ -0,0 +1,92 @@ +/* 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 "IntStream.h" + +namespace antlr4 { + + /// A token has properties: text, type, line, character position in the line + /// (so we can ignore tabs), token channel, index, and source from which + /// we obtained this token. + class ANTLR4CPP_PUBLIC Token { + public: + static constexpr size_t INVALID_TYPE = 0; + + /// During lookahead operations, this "token" signifies we hit rule end ATN state + /// and did not follow it despite needing to. + static constexpr size_t EPSILON = std::numeric_limits<size_t>::max() - 1; + static constexpr size_t MIN_USER_TOKEN_TYPE = 1; + static constexpr size_t EOF = IntStream::EOF; + + virtual ~Token(); + + /// All tokens go to the parser (unless skip() is called in that rule) + /// on a particular "channel". The parser tunes to a particular channel + /// so that whitespace etc... can go to the parser on a "hidden" channel. + static constexpr size_t DEFAULT_CHANNEL = 0; + + /// Anything on different channel than DEFAULT_CHANNEL is not parsed + /// by parser. + static constexpr size_t HIDDEN_CHANNEL = 1; + + /** + * This is the minimum constant value which can be assigned to a + * user-defined token channel. + * + * <p> + * The non-negative numbers less than {@link #MIN_USER_CHANNEL_VALUE} are + * assigned to the predefined channels {@link #DEFAULT_CHANNEL} and + * {@link #HIDDEN_CHANNEL}.</p> + * + * @see Token#getChannel() + */ + static constexpr size_t MIN_USER_CHANNEL_VALUE = 2; + + /// Get the text of the token. + virtual std::string getText() const = 0; + + /// Get the token type of the token + virtual size_t getType() const = 0; + + /// The line number on which the 1st character of this token was matched, line=1..n + virtual size_t getLine() const = 0; + + /// The index of the first character of this token relative to the + /// beginning of the line at which it occurs, 0..n-1 + virtual size_t getCharPositionInLine() const = 0; + + /// Return the channel this token. Each token can arrive at the parser + /// on a different channel, but the parser only "tunes" to a single channel. + /// The parser ignores everything not on DEFAULT_CHANNEL. + virtual size_t getChannel() const = 0; + + /// An index from 0..n-1 of the token object in the input stream. + /// This must be valid in order to print token streams and + /// use TokenRewriteStream. + /// + /// Return INVALID_INDEX to indicate that this token was conjured up since + /// it doesn't have a valid index. + virtual size_t getTokenIndex() const = 0; + + /// The starting character index of the token + /// This method is optional; return INVALID_INDEX if not implemented. + virtual size_t getStartIndex() const = 0; + + /// The last character index of the token. + /// This method is optional; return INVALID_INDEX if not implemented. + virtual size_t getStopIndex() const = 0; + + /// Gets the <seealso cref="TokenSource"/> which created this token. + virtual TokenSource *getTokenSource() const = 0; + + /// Gets the <seealso cref="CharStream"/> from which this token was derived. + virtual CharStream *getInputStream() const = 0; + + virtual std::string toString() const = 0; + }; + +} // namespace antlr4 |
