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a9073b0922
Adds three refactorings intended to help users migrate their existing code to use the new async language features: 1. Convert call to use async alternative 2. Convert function to async 3. Add async alternative function A function is considered to have an async alternative if it has a void return type and has a void returning closure as its last parameter. A method to explicitly mark functions as having an async alternative may be added to make this more accurate in the future (required for eg. a warning about a call to the non-async version of a function in an async context). (1) converts a call to use the new `await` async language syntax. If the async alternative throws, it will also add `try`. The closure itself is hoisted out of the call, see the comments on `AsyncConversionStringBuilder` for specifics. (2) converts a whole function to `async`, using (1) to convert any calls in the function to their async alternatives. (3) is similar to (2), but instead *adds* a function and replaces calls to its completion/handler/callback closure parameter with `return` or `throws`. Resolves rdar://68254700
20 lines
667 B
Swift
20 lines
667 B
Swift
func simple(completion: (String?, Error?) -> Void) { }
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func mismatches() {
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// RUN: not %refactor -convert-call-to-async-alternative -dump-text -source-filename %s -pos=%(line+1):3
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simple()
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// RUN: not %refactor -convert-call-to-async-alternative -dump-text -source-filename %s -pos=%(line+1):3
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simple(10) { res, err in
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print("call mismatch")
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}
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// RUN: not %refactor -convert-call-to-async-alternative -dump-text -source-filename %s -pos=%(line+1):3
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simple { res in
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print("closure mismatch")
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}
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}
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// RUN: not %refactor -add-async-alternative -dump-text -source-filename %s -pos=%(line+1):1
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func missingBody(complete: (Int?, Error?) -> Void)
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