2022-11-02 20:38:03 +00:00
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## This parser is unsupported
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We keep it in this repository for your curiosity. But this is not the parser of ClickHouse.
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2021-01-15 16:57:44 +00:00
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## How to generate source code files from grammar
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Grammar is located inside `ClickHouseLexer.g4` and `ClickHouseParser.g4` files.
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To generate source code you need to install locally the `antlr4` binary:
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```
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cd src/Parsers/New
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antlr4 -no-listener -visitor -package DB -Dlanguage=Cpp ClickHouseLexer.g4 # if you have changes in a lexer part of grammar
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antlr4 -no-listener -visitor -package DB -Dlanguage=Cpp ClickHouseParser.g4
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```
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Commit only git-tracked generated files - not all of the generated content is required.
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