Hamish Knight 2e1c37f1ab [ASTScope] Allow try in unfolded sequence to cover following elements ...

Rather than fixing-up in the parser, adjust the ASTScope logic such
that a `try` element in a SequenceExpr is considered as covering all
elements to the right of it. Cases where this isn't true are invalid,
and will be diagnosed during sequence folding. e.g:

```
0 * try foo() + bar()
_ = try foo() ~~~ bar() // Assuming `~~~` has lower precedence than `=`
```

This ensures we correctly handle `try` in assignment sequences, and
allows ASTGen to get the behavior for free.

rdar://132872235

2025-04-02 12:46:21 +01:00

53 KiB

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