mirror of https://github.com/milvus-io/milvus.git
24 lines
729 B
Markdown
24 lines
729 B
Markdown
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# Generate Parser with Antlr4
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## Install Antlr4
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Please follow [install antlr4](https://github.com/antlr/antlr4/blob/master/doc/go-target.md) to install the antlr tool.
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The version of antlr tool: `4.9`.
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## Code Generate
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After you install the antlr4, you can generate the parser code in golang with:
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```shell
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export CLASSPATH=".:${PWD}/antlr-4.9-complete.jar:$CLASSPATH"
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alias antlr4='java -Xmx500M -cp "${PWD}/antlr-4.9-complete.jar:$CLASSPATH" org.antlr.v4.Tool'
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alias grun='java -Xmx500M -cp "${PWD}/antlr-4.9-complete.jar:$CLASSPATH" org.antlr.v4.gui.TestRig'
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```
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```shell
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antlr4 -Dlanguage=Go -package planparserv2 -o generated -no-listener -visitor Plan.g4
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```
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All generated code will be under directory `generated`.
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