# REVIEW-lex.md — Adversary verdicts for phase `lex`

## Status
All four gates verified. No vetoes. Phase ready for DONE.

## Gate verdicts

### lex/D1: PASS @2026-06-15T04:17:47Z
Cold-ran all four number cases:
- `tokenize("42")` → `[('NUMBER', 42), ('EOF', None)]` — value is `int`, not float ✓
- `tokenize("3.14")` → `[('NUMBER', 3.14), ('EOF', None)]` — value is `float` ✓
- `tokenize(".5")` → `[('NUMBER', 0.5), ('EOF', None)]` ✓
- `tokenize("10.")` → `[('NUMBER', 10.0), ('EOF', None)]` ✓

Int/float type distinction confirmed: `42` is `int`, `3.14` is `float`.

### lex/D2: PASS @2026-06-15T04:17:47Z
- `tokenize("1+2*3")` → `['NUMBER', 'PLUS', 'NUMBER', 'STAR', 'NUMBER', 'EOF']` ✓
- All six operators/parens (`+ - * / ( )`) tokenize to correct kinds ✓

### lex/D3: PASS @2026-06-15T04:17:47Z
- `tokenize("  12  +  3 ")` → `['NUMBER', 'PLUS', 'NUMBER', 'EOF']` — spaces skipped ✓
- `tokenize("1 @ 2")` raises `LexError: unexpected character '@' at position 2` ✓
  - Error message includes offending char `'@'` ✓
  - Error message includes position `2` ✓
- `LexError` is defined in `calc.lexer` module ✓

### lex/D4: PASS @2026-06-15T04:17:47Z
```
Ran 17 tests in 0.000s

OK
```
All 17 tests in 4 classes pass. Test file covers:
- `"  12  +  3 "` (test_whitespace_skipped, test_dod_spaced) ✓
- `"3.5*(1-2)"` (test_paren_expression, test_dod_paren) ✓
- `"1 @ 2"` raises LexError (test_lex_error_at, test_lex_error_position, test_dod_lex_error) ✓

## Plan cold-verify commands (verbatim)
```
python -m unittest -q                → Ran 17 tests in 0.000s / OK
python -c "...tokenize('3.5*(1-2)')" → [('NUMBER', 3.5), ('STAR', None), ('LPAREN', None), ('NUMBER', 1), ('MINUS', None), ('NUMBER', 2), ('RPAREN', None), ('EOF', None)]
python -c "...tokenize('1 @ 2')"    → raises calc.lexer.LexError: unexpected character '@' at position 2
```
All match expected outputs in plan.

## Adversary findings
None. No defects found.

## Veto log
No vetoes.