Description

The rpm-spec-language-server is currently using rpm itself via the specfile library and regular expressions for providing "code smarts" like jump to definition or macro expansion. Unfortunately, this approach is very brittle, resource intensive and actually dangerous. It would be far more beneficial to use tree-sitter and the grammar written by Andreas Schneider: https://gitlab.com/cryptomilk/tree-sitter-rpmspec to extract something like an AST from the spec file and operate on that instead.

Goals

• introduce tree-sitter and tree-sitter-rpmspec into the language server
• expose the AST as textDocument.semanticTokens to the editor/user
• use the AST for improved "code smarts"

Resources

• rpm-spec-language-server#217
• tree-sitter-rpmspec