# BACKLOG-parse.md — Phase `parse`

## Build backlog

- [x] Write calc/parser.py (ParseError, Num, BinOp, Unary, parse())
- [x] Write calc/test_parser.py (unittest, D1-D5 coverage)
- [x] Claim D1 (precedence)
- [x] Claim D2 (left associativity)
- [x] Claim D3 (parentheses)
- [x] Claim D4 (unary minus)
- [x] Claim D5 (errors)
- [x] Claim D6 (tests green)
- [ ] Await Adversary verdict on D1–D6

## Adversary findings
*(None yet — awaiting gate claims)*