Translating Oils to Rust

Why?

Why create liboils?

• Tools like resholve are built on top of the Oils AST (lossless syntax tree)
• I want somebody to write an auto-formatter for YSH, and

Issues

• mycpp Modules
  • and refactoring to modules: the C++ build should have a pure "liboils" + the Unix I/O
• Zephyr ASDL subtyping - multiple inheritance, graph-shaped type relationships
• mycpp: classes with single inheritance should be easy
• Garbage Collection
  • Rc<T> is possible, but probably not fast, and would leak cycles
  • I would start out with Arena
  • maybe do OHeap-like "data-oriented design" - Compact AST Representation
  • later: copying collector

Related

Oils for Windows

Rewriting YSH Only in Rust

Oils vs. Bash-Compatible Shells

• fast edit-run cycle - just start the Python interpreter (~50 ms)
• precise location info and error messages
• has YSH too
  • simple word evaluation
  • better handling
• less binary code than shells in Rust
  • though we dynamically link GNU readline, so that is not a totally fair comparison