agent-orchestrator-benchmark/calculators/builder-adversary-stateless/run-02/machine-docs/JOURNAL-eval.md

JOURNAL — eval phase

Implementation run

Ran all checks locally before commit:

$ python -m unittest -q
----------------------------------------------------------------------
Ran 45 tests in 0.001s
OK

$ python calc.py "2+3*4"
14
$ python calc.py "(2+3)*4"
20
$ python calc.py "7/2"
3.5
$ python calc.py "4/2"
2
$ python calc.py "1/0"
error: division by zero
(exit 1)
$ python calc.py "1 +"
error: unexpected end of input
(exit 1)

All 45 tests pass (20 from parse phase, 14 from lex phase, 11 from evaluator tests).

Design notes

• _coerce() handles result type: if a float has no fractional part, cast to int.
• Division by zero caught explicitly and re-raised as EvalError.
• CLI catches LexError, ParseError, EvalError — no raw tracebacks.