codeql

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Asger F cbe4c81ca6 Unified: add tuple_pattern and sequence_condition; refine if-let/guard mapping

ast_types.yml additions:
- tuple_pattern { element*: pattern } in the pattern supertype.
- sequence_condition { stmt*: stmt, condition: condition } in the
  condition supertype.

swift.rs:
- Map Swift tuple destructuring (e.g. `let (a, b) = pair`) to the new
  tuple_pattern instead of synthesizing an apply_pattern.
- if-let / guard-let: explicitly match the value_binding_pattern
  (the `let` keyword) and bind the source expression as the next
  condition child, so `let` no longer leaks into the output.

2026-05-13 10:35:29 +02:00