Lean 4 fork for HoTT-compatible kernel extensions (Path types, transport, HITs). Maintained against upstream leanprover/lean4.
d95a2ee35e
This PR introduces a structure called `FormatConfig`, which provides additional configuration options for `GenericFormat`, such as whether leap seconds should be allowed during parsing. By default, this option is set to `false`. This PR also fixes certain flaws to make the implementation less permissive by: - Disallowing the final leap second, such as `2016-12-31T23:59:60Z`, when `allowLeapSeconds = false`. - Disallowing invalid leap seconds, such as `2017-06-30T23:59:60Z`, when `allowLeapSeconds = false`. - Disallowing leap-minute time zones, such as `2016-12-31T00:00:00+2360`, and out-of-range time zones, such as `2016-12-31T00:00:00+2490`. These changes ensure that Lean aligns with TypeScript's behavior, as outlined in this table: https://github.com/cedar-policy/cedar-spec/pull/519#issuecomment-2613547897. |
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