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| 1 | +// |
| 2 | +// Function+Effects.swift |
| 3 | +// SyntaxKit |
| 4 | +// |
| 5 | +// Created by Leo Dion. |
| 6 | +// Copyright © 2025 BrightDigit. |
| 7 | +// |
| 8 | +// Permission is hereby granted, free of charge, to any person |
| 9 | +// obtaining a copy of this software and associated documentation |
| 10 | +// files (the “Software”), to deal in the Software without |
| 11 | +// restriction, including without limitation the rights to use, |
| 12 | +// copy, modify, merge, publish, distribute, sublicense, and/or |
| 13 | +// sell copies of the Software, and to permit persons to whom the |
| 14 | +// Software is furnished to do so, subject to the following |
| 15 | +// conditions: |
| 16 | +// |
| 17 | +// The above copyright notice and this permission notice shall be |
| 18 | +// included in all copies or substantial portions of the Software. |
| 19 | +// |
| 20 | +// THE SOFTWARE IS PROVIDED “AS IS”, WITHOUT WARRANTY OF ANY KIND, |
| 21 | +// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES |
| 22 | +// OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND |
| 23 | +// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT |
| 24 | +// HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, |
| 25 | +// WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING |
| 26 | +// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR |
| 27 | +// OTHER DEALINGS IN THE SOFTWARE. |
| 28 | +// |
| 29 | + |
| 30 | +import SwiftSyntax |
| 31 | + |
| 32 | +extension Function { |
| 33 | + /// Function effect specifiers (async/throws combinations) |
| 34 | + internal enum Effect { |
| 35 | + case none |
| 36 | + /// synchronous effect specifier: throws or rethrows |
| 37 | + case `throws`(isRethrows: Bool) |
| 38 | + case async |
| 39 | + /// combined async and throws/rethrows |
| 40 | + case asyncThrows(isRethrows: Bool) |
| 41 | + } |
| 42 | + |
| 43 | + /// Marks the function as `throws` or `rethrows`. |
| 44 | + /// - Parameter rethrows: Pass `true` to emit `rethrows` instead of `throws`. |
| 45 | + public func `throws`(isRethrows: Bool = false) -> Self { |
| 46 | + var copy = self |
| 47 | + copy.effect = .throws(isRethrows: isRethrows) |
| 48 | + return copy |
| 49 | + } |
| 50 | + |
| 51 | + /// Marks the function as `async`. |
| 52 | + public func async() -> Self { |
| 53 | + var copy = self |
| 54 | + copy.effect = .async |
| 55 | + return copy |
| 56 | + } |
| 57 | + |
| 58 | + /// Marks the function as `async throws` or `async rethrows`. |
| 59 | + /// - Parameter rethrows: Pass `true` to emit `async rethrows`. |
| 60 | + public func asyncThrows(isRethrows: Bool = false) -> Self { |
| 61 | + var copy = self |
| 62 | + copy.effect = .asyncThrows(isRethrows: isRethrows) |
| 63 | + return copy |
| 64 | + } |
| 65 | +} |
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