Parsers generated with 4.10 or not compatible with previous versions of the runtime. The key point here is that we changed the version number stored inside the serialization format and so, in order to use this new version of ANTLR, you must regenerate all of your lexers and parsers using the 4.10 tool and then use the new runtime. ![]() This serialization format was changed for 4.10 to remove a size limit on the supported ATNs. 4.10-generated parsers incompatible with previous runtimesĪNTLR not only generates recursive-descent parsers it generates a state machine called an augmented transition network (ATN) in serialized form as a bunch of integers stored in the generated parser and lexer files. Github's pull request process enforces the sig and gives instructions on how to fix any commits that lack the sig. Įach commit in pull requests must have a "signature", which is simple as using -s (not -S) on the git commit command: $ git commit -s -m 'This is my commit message' It is simpler than the original contributors license agreement, which required programmers to sign the contributors.txt file, which has now moved to file historical-contributors-agreement.txt. In order to bring ANTLR more in line with current standard standards for contribution processes, as of 4.10, ANTLR uses the Linux Foundation's Developer Certificate of Origin, DCO, version 1.1. Targets such as Go that pull directly from the repository can use the default master branch but can also pull from the active dev branch: :::bash The dev branch is merged back into master to cut a release and the release state is tagged (e.g., with 4.10-rc.1 or 4.10.) Visually our process looks roughly like this: We now do development work in branch dev between releases and all pull requests should be derived from that branch. The default branch for this repo remains master and it is the latest stable release with tags for the various releases e.g., see release tag 4.9.3. ![]() We have changed the branching structure of the repository. This is true of all targets (except probably javascript). You must regenerate all of your code from grammars to use the new runtime. WARNING: Generated 4.10 lexers and parsers are incompatible with code generated by previous versions of ANTLR. There have been many valuable contributions, but I welcome and as recent "official" major ANTLR contributors. This is a very major release with a number of important changes.
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