roadmap.md

Roadmap:

1. Fix duplicate constant storage in bytecode.
2. NaN boxing (cancelled)
3. Refactor VM to use TCO?
4. Add || or && operator support.
5. Add else statement support.
6. Add while statement support.
7. Add support for undefined variable declarations.
8. Add static-size & heap strings with interning.
9. Add simple data objects.
10. Add custom natives: console, clock objects!
11. Add larger strings under ObjectBase<Value>, StringBase for string literals.
12. Make banana.js work.
13. Add anonymous functions as expressions.
14. Add support for this in functions & objects.
15. Add Arrays:
16. Add mark and sweep GC.
17. Add break and continue.
18. Parse function decls differently: function name() {} is like var name = function() {...}.
19. Hoist var decls per scope.
20. Add support for scoped symbol resolution in bytecode generation. - FIX GC to track DEAD CAPTURE OBJECTS!!
21. Add support for Property Descriptors.
22. Add an Object.method API:
23. Update Object and Array built-ins to be more conformant:
24. Add typeof and void operators.
25. Add implicit ret opcode on omitted returns- it yields a this reference on ctor-mode calls, discarding any regular expr result.
26. Add array.length with side-effects!
27. Make String a constructor function & add some methods.
28. Refactor bytecode gen to Dep. Inj. modules for generating each expr / stmt.
29. Add prefix increment & decrement operator.
30. Support Polyfills.
31. Add exceptions (see codegen.md).
32. Add for loops.
33. Function.prototype should be a dud function (return undefined & length = 0).
34. Improve operations for objects: - DELAYED: Improve as_string method of object-base... Pretty print object literal / [object <class name> ... ]
35. Add x instanceof y operator.
36. Add rest parameters by ES6.
37. Add delete operator.
38. Add postfix ++ and -- operators.
39. Add more statement support:

• Empty statement
• return; semantics
• do {} while (cond); semantics
• Allow any statement in if/else, while, for...

40. Add whitespace escapes and hex ASCII escapes in string literals.

Ongoing:

1. Improve runtime errors: WIP
   • ReferenceError on bad property accesses.
   • SyntaxError on bad syntax evaluation / Function ctor calls.
2. Add __proto__ AKA [[prototype]] support:
   • Add __proto__ to parsing.
   • Add __proto__ support to bytecode & compiler.
   • Add __proto__ support to Value & VM.
   • Add __proto__ test cases.
3. Add more support for built-in methods:
   • String methods: concat, split
   • Object methods: keys, seal, isFrozen, isSealed, isConfigurable, hasOwnProperty
   • Date methods: instance getters & setters, toString?? toDateString??
   • Math methods: E, LOG, PI constants, pow, cos, sin, tan, log, logn, floor, ceil
   • Array methods: some, reduce, shift, unshift, splice, sort