8000 Rust Grammar file · Issue #95 · antlr/antlr4-lab · GitHub
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Rust Grammar file #95

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jalexcole opened this issue Jan 16, 2025 · 1 comment
Open

Rust Grammar file #95

jalexcole opened this issue Jan 16, 2025 · 1 comment

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@jalexcole
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Rust grammar file is missing
@kaby76
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kaby76 commented Jan 16, 2025

You cannot use the rust grammar from grammars-v4 in antlr-lab. It's impossible because the website uses the "interpreter" form of the parser engine. The rust grammar contains target language specific files. These have to be compiled for the target.

The grammars-v4 repo contains grammars.json. This file is used by antlr-lab when the HTML server starts up. It very carefully weeds out all grammars that contain any target-specific code by finding any action in any of the .g4's.

You must either:

  • generate the parser for Java, compile with the .java files from Java/, and use "TestRig" (alias grun='java -cp "c:/Users/Kenne/.m2/antlr4-4.12.0-complete.jar;." org.antlr.v4.gui.TestRig').
  • generate a driver for the parser. Trash does this. For the CSharp target, the toolkit has a multitude of tree display options. TestRig is really limited.

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