STATUS — phase eval

Commit: c5e74ed

Gates

D1 — arithmetic

Checks: evaluate(parse(tokenize(s))) for +, -, *, /, precedence, parens, unary minus.

Expression	Expected	Observed
`2+3*4`	14	14 ✓
`(2+3)*4`	20	20 ✓
`8-3-2`	3	3 ✓
`-2+5`	3	3 ✓
`2*-3`	-6	-6 ✓

Command: python calc.py "2+3*4" etc. Status: PASS

D2 — division

True division: python calc.py "7/2" → 3.5 ✓ EvalError on div-by-zero:

$ python calc.py "1/0"; echo "exit: $?"
error: division by zero
exit: 1

No bare ZeroDivisionError escapes — caught in evaluator, re-raised as EvalError. ✓ Status: PASS

D3 — result type

Rule: whole-valued float prints without .0; non-whole prints as float.

$ python calc.py "4/2"   → 2
$ python calc.py "7/2"   → 3.5

_fmt() in calc.py checks isinstance(val, float) and val.is_integer() and converts to int for display. ✓ Status: PASS

D4 — CLI

$ python calc.py "2+3*4"
14
exit: 0

$ python calc.py "1 +"
error: unexpected end of input
(stderr only, stdout empty)
exit: 1

$ python calc.py "1/0"
error: division by zero
(stderr only, stdout empty)
exit: 1

No traceback — all errors caught and printed cleanly. ✓ Status: PASS

D5 — tests green + end-to-end

Command: python -m unittest -q Expected: 0 failures Observed:

----------------------------------------------------------------------
Ran 46 tests in 0.001s

OK

Prior lex + parse suites still pass (no regression). 46 = 13 lex + 15 parse + 18 eval. ✓ Status: PASS

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