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I am using the ANTLR4 IntelliJ plug-in, and I am using a the Antlr-4.5.1 Jar.
When I Generate Antlr Recognizer in Lexer and Parser can't resolve symbols RuntimeMetaData and Vocabulary.
If I use the command line to compile and run my .g4 file it works fine but gives errors in IntelliJ.
I can swap in the command line compiled Lexer and Parser Java files for the error ones and it runs fine.
I'm on Mac OS X 10.11 using IntelliJ 15.
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ANTLR v4 is a powerful tool used for building new programming languages and processing/translating structured text or binary files. ANTLR uses a grammar you create to generate a parser which can build and traverse a parse tree (or abstract syntax tree, AST).
ANTLR (ANother Tool for Language Recognition) is a tool for processing structured text. It does this by giving us access to language processing primitives like lexers, grammars, and parsers as well as the runtime to process text against them. It's often used to build tools and frameworks.
What is ANTLR? ANTLR (ANother Tool for Language Recognition) is a powerful parser generator for reading, processing, executing, or translating structured text or binary files. Terence Parr is a tech lead at Google and until 2022 was a professor of data science / computer science at Univ.
The latest version of ANTLR is 4.10. 1, released April 15, 2022.
You might have an older antlr4-runtime-x.y.z.jar on your compile classpath. I had the same issue when upgrading the antlr4-maven-plugin to 4.5.1, but forgetting to do the same for the antlr4-runtime dependency.
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