Do not perform full expansion of #expect() when try or await is present.
#790
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… present. For reasons that have been documented at length (see #162), we aren't able to correctly expand conditions on `#expect()` or `#require()` that have effects (`try` or `await`.) We aren't currently detecting all possible patterns that expand incorrectly. This PR causes us to back out of the full expansion if the `try` or `await` keyword is present _anywhere_ inside an expectation condition expression. Resolves #783.
grynspan
requested review from
SeanROlszewski,
briancroom,
dennisweissmann,
stmontgomery and
suzannaratcliff
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grynspan
commented
Oct 30, 2024
| /// | ||
| /// - Returns: An instance of ``Condition`` describing `expr`. | ||
| private func _parseCondition(from expr: ExprSyntax, for macro: some FreestandingMacroExpansionSyntax, in context: some MacroExpansionContext) -> Condition { | ||
| // Handle closures with a single expression in them (e.g. { $0.foo() }) |
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Moved this up so that closure "expansion" (not really but sure why not) still happens. If we ever actually start doing fun things with closures, we'll probably need to move this back down?
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@swift-ci test Windows |
briancroom
reviewed
Nov 4, 2024
briancroom
approved these changes
Nov 5, 2024
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For reasons that have been documented at length (see #162), we aren't able to correctly expand conditions on
#expect()or#require()that have effects (tryorawait.) We aren't currently detecting all possible patterns that expand incorrectly. This PR causes us to back out of the full expansion if thetryorawaitkeyword is present anywhere inside an expectation condition expression.Resolves #783.
Checklist: