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import SwiftSyntax
import SwiftSyntaxBuilder
import SwiftSyntaxMacros
public struct StringifyMacro: ExpressionMacro {
public static func expansion(
of macro: some FreestandingMacroExpansionSyntax,
in context: some MacroExpansionContext
) -> ExprSyntax {
guard let argument = macro.argumentList.first?.expression else {
fatalError("Boom")
}
return "(\(argument), \(StringLiteralExprSyntax(content: argument.description)))"
}
}
public struct MyWrapperMacro: AccessorMacro {
public static func expansion(
of node: AttributeSyntax,
providingAccessorsOf declaration: some DeclSyntaxProtocol,
in context: some MacroExpansionContext
) throws -> [AccessorDeclSyntax] {
return []
}
}
public struct WrapAllProperties: MemberAttributeMacro {
public static func expansion(
of node: AttributeSyntax,
attachedTo parent: some DeclGroupSyntax,
providingAttributesFor member: some DeclSyntaxProtocol,
in context: some MacroExpansionContext
) throws -> [AttributeSyntax] {
return []
}
}
public struct ArbitraryMembersMacro: MemberMacro {
public static func expansion(
of node: AttributeSyntax,
providingMembersOf decl: some DeclGroupSyntax,
in context: some MacroExpansionContext
) throws -> [DeclSyntax] {
return [
"""
init(coding: String) {
fatalError("boom")
}
"""
]
}
}
public struct SendableMacro: ExtensionMacro {
public static func expansion(
of node: AttributeSyntax,
attachedTo: some DeclGroupSyntax,
providingExtensionsOf type: some TypeSyntaxProtocol,
conformingTo protocols: [TypeSyntax],
in context: some MacroExpansionContext
) throws -> [ExtensionDeclSyntax] {
if (protocols.isEmpty) {
return []
}
let sendableExtension: DeclSyntax =
"""
extension \(type.trimmed): Sendable {}
"""
guard let extensionDecl = sendableExtension.as(ExtensionDeclSyntax.self) else {
return []
}
return [extensionDecl]
}
}
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