Squeak deserves to have an excellent scanner, parser, AST and compiler. The compilo project aims at providing this.
Problem
The current parser, scanner, and compiler are not really adapted. The AST nodes are hardcoding the pretty printer information and they lack information such as the parent node to help AST walkers.
Proposal
Provide an alternative to the current compiler set by proposing to have
a scanner generated by SmaCC
a parser generated by SmaCC
an good AST (the one of RB, with the information such as parent in node)
a visitor for byte code emition and pretty printing
the closure compiler
the various fixes made by marcus denker
Note that SmaCC should not be part of this but a tool that can be used.
Ongoing Actions and Next Steps
collect all the changesets so that we are able to load them with one script
identify next steps
Backwards Compatibility
Leave old compiler in as well. If people are uncomfortable with the
SmaCC license they can remove it and use the old compiler.
Known issues
We should check the licensing issues about the AST of RB.
