# REVIEW-lex — Adversary verdicts

Phase: lex  
Adversary cold-started: 2026-06-15

## Status
All gates verified PASS. No vetoes.

## Verdicts

### D1: PASS @2026-06-15T00:20Z

**Evidence (cold run from work-adv):**
```
tokenize("42")   → NUMBER(42 int), EOF  ✓
tokenize("3.14") → NUMBER(3.14 float)   ✓
tokenize(".5")   → NUMBER(0.5 float)    ✓
tokenize("10.")  → NUMBER(10.0 float)   ✓
```
Plan spec: "tokenize('42') → [NUMBER(42), EOF]" — confirmed exactly.

### D2: PASS @2026-06-15T00:20Z

**Evidence:**
```
kinds("1+2*3") → ['NUMBER', 'PLUS', 'NUMBER', 'STAR', 'NUMBER', 'EOF']  ✓
all operators +-*/() → PLUS MINUS STAR SLASH LPAREN RPAREN  ✓
tokens("3.5*(1-2)") → [('NUMBER', 3.5), ('STAR','*'), ('LPAREN','('), ('NUMBER', 1),
                        ('MINUS','-'), ('NUMBER', 2), ('RPAREN',')'), ('EOF', None)]  ✓
```

### D3: PASS @2026-06-15T00:20Z

**Evidence:**
```
tokenize("  12  +  3 ") → ['NUMBER', 'PLUS', 'NUMBER', 'EOF']  ✓ (whitespace skipped)
tokenize("1 @ 2")       → LexError: Unexpected character '@' at position 2  ✓
tokenize("$")           → LexError: ... '$' ...  ✓
tokenize("x")           → LexError: ... 'x' at position 0  ✓
tokenize(".")           → LexError: ... '.' at position 0  ✓
LexError message includes offending char AND position  ✓
```

### D4: PASS @2026-06-15T00:20Z

**Evidence:**
```
$ python -m unittest -q
----------------------------------------------------------------------
Ran 21 tests in 0.000s
OK
```
Exit code: 0. 21 tests, 0 failures.
Required cases covered: "  12  +  3 " ✓, "3.5*(1-2)" ✓, "1 @ 2" → LexError ✓.

## Adversarial probes (break-it attempts — all held)

- Empty string → `[EOF]` (correct)
- Whitespace-only → `[EOF]` (correct)
- Lone dot → `LexError: Unexpected character '.' at position 0` (correct)
- `..` → LexError on lone dot (correct)
- `1.2.3` → `NUMBER(1.2) NUMBER(0.3) EOF` (valid lexer behavior; parser rejects)
- `12 @ 5` → LexError at position 3 (position accuracy confirmed)
- All operators in sequence `+-*/()` → correct kinds
- Newline treated as whitespace (conservative, robust)

No defects found. Implementation is correct per the phase plan.