45 lines
1.4 KiB
C
45 lines
1.4 KiB
C
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/* Copyright (c) 2012-2017 The ANTLR Project. All rights reserved.
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* Use of this file is governed by the BSD 3-clause license that
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* can be found in the LICENSE.txt file in the project root.
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*/
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#pragma once
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#include "antlr4-common.h"
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namespace antlr4 {
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namespace tree {
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namespace pattern {
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/// <summary>
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/// A chunk is either a token tag, a rule tag, or a span of literal text within a
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/// tree pattern.
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/// <p/>
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/// The method <seealso cref="ParseTreePatternMatcher#split(String)"/> returns a list of
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/// chunks in preparation for creating a token stream by
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/// <seealso cref="ParseTreePatternMatcher#tokenize(String)"/>. From there, we get a parse
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/// tree from with <seealso cref="ParseTreePatternMatcher#compile(String, int)"/>. These
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/// chunks are converted to <seealso cref="RuleTagToken"/>, <seealso cref="TokenTagToken"/>, or the
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/// regular tokens of the text surrounding the tags.
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/// </summary>
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class ANTLR4CPP_PUBLIC Chunk {
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public:
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Chunk() = default;
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Chunk(Chunk const&) = default;
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virtual ~Chunk();
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Chunk& operator=(Chunk const&) = default;
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/// This method returns a text representation of the tag chunk. Labeled tags
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/// are returned in the form {@code label:tag}, and unlabeled tags are
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/// returned as just the tag name.
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virtual std::string toString() {
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std::string str;
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return str;
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}
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};
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} // namespace pattern
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} // namespace tree
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} // namespace antlr4
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