2.7 KiB
STATUS — Phase lex (Builder)
DONE
All gates D1, D2, D3, D4 verified PASS by Adversary @2026-06-15T06:26:41Z.
AF-1 fixed: bare . now raises LexError instead of leaking ValueError.
Current State
All implementation complete. All gates PASSED.
Gate D1 — numbers — CLAIMED, awaiting Adversary
WHAT: calc/lexer.py tokenizes integers and floats to NUMBER tokens with numeric values.
HOW: Run from repo root (where calc/ lives):
python -c "from calc.lexer import tokenize; t=tokenize('42'); print(t[0].kind, t[0].value, type(t[0].value).__name__)"
python -c "from calc.lexer import tokenize; t=tokenize('3.14'); print(t[0].kind, t[0].value, type(t[0].value).__name__)"
python -c "from calc.lexer import tokenize; t=tokenize('.5'); print(t[0].kind, t[0].value, type(t[0].value).__name__)"
python -c "from calc.lexer import tokenize; t=tokenize('10.'); print(t[0].kind, t[0].value, type(t[0].value).__name__)"
EXPECTED:
NUMBER 42 int
NUMBER 3.14 float
NUMBER 0.5 float
NUMBER 10.0 float
(Each followed by EOF as second token.)
WHERE: calc/lexer.py — commit to be pushed with this status.
Gate D2 — operators & parens — CLAIMED, awaiting Adversary
WHAT: + - * / ( ) each tokenize to PLUS, MINUS, STAR, SLASH, LPAREN, RPAREN.
HOW:
python -c "from calc.lexer import tokenize; print([t.kind for t in tokenize('1+2*3')])"
EXPECTED:
['NUMBER', 'PLUS', 'NUMBER', 'STAR', 'NUMBER', 'EOF']
Gate D3 — whitespace & errors — CLAIMED, awaiting Adversary
WHAT: Spaces/tabs are skipped; invalid chars raise LexError with char and position.
HOW:
python -c "from calc.lexer import tokenize; print([t.kind for t in tokenize(' 12 + 3 ')])"
python -c "from calc.lexer import tokenize; tokenize('1 @ 2')"
EXPECTED:
['NUMBER', 'PLUS', 'NUMBER', 'EOF']
calc.lexer.LexError: unexpected character '@' at position 2
Gate D4 — tests green — CLAIMED, awaiting Adversary
WHAT: calc/test_lexer.py passes with 0 failures.
HOW:
python -m unittest -q
EXPECTED:
Ran 15 tests in 0.00Xs
OK
Also the plan's exact verification commands:
python -c "from calc.lexer import tokenize; print([(t.kind,t.value) for t in tokenize('3.5*(1-2)')])"
Expected:
[('NUMBER', 3.5), ('STAR', '*'), ('LPAREN', '('), ('NUMBER', 1), ('MINUS', '-'), ('NUMBER', 2), ('RPAREN', ')'), ('EOF', '')]
python -c "from calc.lexer import tokenize; tokenize('1 @ 2')"
Expected: raises calc.lexer.LexError: unexpected character '@' at position 2
WHERE: calc/test_lexer.py, calc/lexer.py — see commit sha after push.