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//
// This source file is part of the Swift.org open source project
//
// Copyright (c) 2025 Apple Inc. and the Swift project authors
// Licensed under Apache License v2.0 with Runtime Library Exception
//
// See https://swift.org/LICENSE.txt for license information
// See https://swift.org/CONTRIBUTORS.txt for Swift project authors
//
import SwiftParser
public import SwiftSyntax
import SwiftSyntaxBuilder
public import SwiftSyntaxMacros
/// The implementation of the `#__capturedValue()` macro when the value conforms
/// to the necessary protocols.
///
/// This type is used to implement the `#__capturedValue()` macro. Do not use it
/// directly.
public struct ExitTestCapturedValueMacro: ExpressionMacro, Sendable {
public static func expansion(
of macro: some FreestandingMacroExpansionSyntax,
in context: some MacroExpansionContext
) throws -> ExprSyntax {
let arguments = Array(macro.arguments)
let expr = arguments[0].expression
// No additional processing is required as this expression's type meets our
// requirements.
return expr
}
}
/// The implementation of the `#__capturedValue()` macro when the value does
/// _not_ conform to the necessary protocols.
///
/// This type is used to implement the `#__capturedValue()` macro. Do not use it
/// directly.
public struct ExitTestBadCapturedValueMacro: ExpressionMacro, Sendable {
public static func expansion(
of macro: some FreestandingMacroExpansionSyntax,
in context: some MacroExpansionContext
) throws -> ExprSyntax {
let arguments = Array(macro.arguments)
let expr = arguments[0].expression
let nameExpr = arguments[1].expression.cast(StringLiteralExprSyntax.self)
// Diagnose that the type of 'expr' is invalid.
context.diagnose(.capturedValueMustBeSendableAndCodable(expr, name: nameExpr))
return #"Swift.fatalError("Unsupported")"#
}
}
/// The implementation of the `#__capturedValue()` macro when the type we
/// inferred for the value was incorrect.
///
/// This type is used to implement the `#__capturedValue()` macro. Do not use it
/// directly.
public struct ExitTestIncorrectlyCapturedValueMacro: ExpressionMacro, Sendable {
public static func expansion(
of macro: some FreestandingMacroExpansionSyntax,
in context: some MacroExpansionContext
) throws -> ExprSyntax {
let arguments = Array(macro.arguments)
let expr = arguments[0].expression
let nameExpr = arguments[1].expression.cast(StringLiteralExprSyntax.self)
// Diagnose that the type of 'expr' is invalid.
let name = nameExpr.representedLiteralValue ?? expr.trimmedDescription
let capture = ClosureCaptureSyntax(name: .identifier(name))
context.diagnose(.typeOfCaptureIsAmbiguous(capture))
return expr
}
}
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