Converting YACC/LEX to MPS?

I'm interested in taking the PHP language definition and creating an MPS language/textgen for it.  Are there any existing tools that will do that?


An experimental work on an antlr4 importer is to be found at


That's good to know, but it doesn't help me here.  I was thinking of using it to create a PHP language, based on the PHP .y and .l files, which aren't antlr.



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