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rose-ash/lib/datalog/scoreboard.md
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datalog: parser accepts negative integer literals (248/248)
Bug: `n(-1).` failed to parse — the tokenizer produced op `-`
followed by number `1`, and dl-pp-parse-arg expected a term after
seeing `-` as an op (and a `(` for a compound) but found a bare
number. Users had to write `(- 0 1)` or compute via `is`.

Fix: dl-pp-parse-arg detects op `-` directly followed by a number
token (no intervening `(`) and consumes both as a single negative
number literal. Subtraction (`is(Y, -(X, 2))`) and compound
arithmetic via the operator form are unaffected — they use the
`-(` lookahead path.

2 new parser tests: negative integer literal and subtraction
compound preserved.
2026-05-10 20:55:42 +00:00

18 lines
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Markdown

# datalog scoreboard
**248 / 248 passing** (0 failure(s)).
| Suite | Passed | Total | Status |
|-------|--------|-------|--------|
| tokenize | 26 | 26 | ok |
| parse | 22 | 22 | ok |
| unify | 28 | 28 | ok |
| eval | 36 | 36 | ok |
| builtins | 23 | 23 | ok |
| semi_naive | 8 | 8 | ok |
| negation | 10 | 10 | ok |
| aggregates | 20 | 20 | ok |
| api | 20 | 20 | ok |
| magic | 34 | 34 | ok |
| demo | 21 | 21 | ok |