PROGRESS.md

Rustic++ Progress

Phase 0 — Foundations & Proof ✅

• trilang-poc verified working

Phase 1 — Lexer, Parser, AST ✅

• Design core syntax
• Write lexer
• Write parser
• Pretty-printer for AST

Definition of Done:

• A .rcpp file with functions, structs, if/else, loops, and expressions parses into an AST
• Parser gives useful line/column error messages on malformed input
• 20+ example programs in examples/phase1/ all parse without crashing

Phase 2 — Tree-Walking Interpreter ✅

• Implement interpreter with eval_expr and eval_stmt
• Support for functions, if/else, loops, expressions
• Assignment expressions work correctly
• 15+ example programs execute correctly
• Deep recursion causes stack overflow (known limitation)

Phase 3 — Type System & Semantic Analysis (in progress)

• Basic type checker implemented
• Support for Int, Float, Bool, String types
• Type checking for binary/unary operators
• Function type checking
• Struct type checking
• Type inference for local variables
• Better error messages with source locations

Phase 4 — C Interop (pending)

Phase 5 — Native Codegen Backend (pending)

Phase 6 — C++ Interop (pending)

Phase 7 — Rust Interop (pending)

Phase 8 — Memory Model & Garbage Collector (pending)

Phase 9 — Tooling (pending)

Phase 10 — Flagship Demo & v1.0 (pending)