agent-orchestrator-benchmark/calculators/builder-solo/run-05/machine-docs/JOURNAL-parse.md

JOURNAL-parse

2026-06-15 — Phase start

Reading plan. Building recursive-descent parser with:

• Grammar: expr → term ((+|-) term); term → factor ((|/) factor)*; factor → NUMBER | ( expr ) | - factor
• AST nodes: Num, BinOp, Unary
• ParseError exception

Plan: implement parser.py, test_parser.py, verify all D1–D6, then certify.