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Quoted atoms with uppercase- or underscore-leading names were
misclassified as variables. `p('Hello World').` flowed through the
tokenizer's "atom" branch and through the parser's string->symbol,
producing a symbol named "Hello World". dl-var? inspects the first
character — "H" is uppercase, so the fact was rejected as non-ground
("expected ground literal").
Tokenizer now emits "string" for any '...' quoted form. Quoted atoms
become opaque string constants — matching how Datalog idiomatically
treats them, and avoiding a per-symbol "quoted" marker that would
have rippled through unification and dl-var?. The trade-off is that
'a' and a are no longer the same value (string vs symbol); for
Datalog this is the safer default.
Updated the existing "quoted atom" tokenize test, added a regression
case for an uppercase-named quoted atom, and a parse-level test that
verifies the AST. Conformance 269/269.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
421 B
421 B
datalog scoreboard
269 / 269 passing (0 failure(s)).
| Suite | Passed | Total | Status |
|---|---|---|---|
| tokenize | 31 | 31 | ok |
| parse | 23 | 23 | ok |
| unify | 29 | 29 | ok |
| eval | 40 | 40 | ok |
| builtins | 26 | 26 | ok |
| semi_naive | 8 | 8 | ok |
| negation | 10 | 10 | ok |
| aggregates | 23 | 23 | ok |
| api | 22 | 22 | ok |
| magic | 36 | 36 | ok |
| demo | 21 | 21 | ok |