Hey all, As per the GSoC announcement, @jansvoboda11 is working on Integration of libSyntax with the compiler pipeline with @rintaro as his mentor. I'd like to provide more details on what the project entails and what changes you should expect to see coming to the Swift repo...

Instead of creating the AST directly in the parser (and libSyntax or SwiftSyntax via SyntaxParsingContext), make Parser to explicitly create a tree of ParsedSyntaxNodes. Their OpaqueSyntaxNodes can...