I finished a tree-sitter based parser plugin which can be found here https://github.com/kvaneesh/tree-sitter-gtags-parser . For now, the project only supports C language. But other languages can be easily added by including queries for those. Language-specific queries can be found in the tree-sitter repo. Forex: cpp can be found here https://github.com/tree-sitter/tree-sitter-cpp/blob/master/queries/tags.scm
-aneesh
