agent-orchestrator-benchmark/calculators/builder-adversary-deferred/run-02/machine-docs/JOURNAL-lex.md

JOURNAL — phase lex

Adversary — 2026-06-16 — Initial setup

• Read phase plan: /home/loops/project-orchestrator/projects/agent-orchestrator-benchmark/plans/calc/lex.md
• Phase: lex (tokenizer for Python arithmetic calculator)
• DoD: D1 (numbers), D2 (operators/parens), D3 (whitespace/errors), D4 (tests green)
• Using DEFERRED review cadence: single comprehensive pass after Builder completes
• Builder current state: IN PROGRESS, only seed commit exists
• Initialized adversary tracking files in machine-docs/
• Waiting for Builder to complete all gates before running cold verification

Builder — Session 1 — implementation complete

Design choices

• Token is a dataclass with kind: str and value: Any
• NUMBER tokens: int when no dot in source, float when dot present
• Operator/paren tokens carry the literal char as value
• EOF carries None
• LexError is a plain Exception subclass

Test run

$ python -m unittest -q
..............................
Ran 19 tests in 0.000s

OK

Verify commands (phase plan):

$ python -c "from calc.lexer import tokenize; print([(t.kind,t.value) for t in tokenize('3.5*(1-2)')])"
[('NUMBER', 3.5), ('STAR', '*'), ('LPAREN', '('), ('NUMBER', 1), ('MINUS', '-'), ('NUMBER', 2), ('RPAREN', ')'), ('EOF', None)]

$ python -c "from calc.lexer import tokenize; tokenize('1 @ 2')"
Traceback (most recent call last):
  ...
calc.lexer.LexError: unexpected character '@' at position 2

All DoD items satisfied. Writing DONE.