Isolate override closures on main actor (#134)

Author: ra1028

Sources/Atoms/AtomRoot.swift

@@ -128,7 +128,7 @@ public struct AtomRoot<Content: View>: View {
     ///   - value: A value to be used instead of the atom's value.
     ///
     /// - Returns: The self instance.
-    public func override<Node: Atom>(_ atom: Node, with value: @escaping @Sendable (Node) -> Node.Produced) -> Self {
+    public func override<Node: Atom>(_ atom: Node, with value: @escaping @MainActor @Sendable (Node) -> Node.Produced) -> Self {
         mutating(self) { $0.overrides[OverrideKey(atom)] = Override(isScoped: false, getValue: value) }
     }
 
@@ -144,7 +144,7 @@ public struct AtomRoot<Content: View>: View {
     ///   - value: A value to be used instead of the atom's value.
     ///
     /// - Returns: The self instance.
-    public func override<Node: Atom>(_ atomType: Node.Type, with value: @escaping @Sendable (Node) -> Node.Produced) -> Self {
+    public func override<Node: Atom>(_ atomType: Node.Type, with value: @escaping @MainActor @Sendable (Node) -> Node.Produced) -> Self {
         mutating(self) { $0.overrides[OverrideKey(atomType)] = Override(isScoped: false, getValue: value) }
     }
 }

Sources/Atoms/AtomScope.swift

@@ -129,7 +129,7 @@ public struct AtomScope<Content: View>: View {
     ///   - value: A value to be used instead of the atom's value.
     ///
     /// - Returns: The self instance.
-    public func scopedOverride<Node: Atom>(_ atom: Node, with value: @escaping @Sendable (Node) -> Node.Produced) -> Self {
+    public func scopedOverride<Node: Atom>(_ atom: Node, with value: @escaping @MainActor @Sendable (Node) -> Node.Produced) -> Self {
         mutating(self) { $0.overrides[OverrideKey(atom)] = Override(isScoped: true, getValue: value) }
     }
 
@@ -147,7 +147,7 @@ public struct AtomScope<Content: View>: View {
     ///   - value: A value to be used instead of the atom's value.
     ///
     /// - Returns: The self instance.
-    public func scopedOverride<Node: Atom>(_ atomType: Node.Type, with value: @escaping @Sendable (Node) -> Node.Produced) -> Self {
+    public func scopedOverride<Node: Atom>(_ atomType: Node.Type, with value: @escaping @MainActor @Sendable (Node) -> Node.Produced) -> Self {
         mutating(self) { $0.overrides[OverrideKey(atomType)] = Override(isScoped: true, getValue: value) }
     }
 }

Sources/Atoms/Core/Override.swift

@@ -3,18 +3,18 @@ internal protocol OverrideProtocol: Sendable {
     associatedtype Node: Atom
 
     var isScoped: Bool { get }
-    var getValue: @Sendable (Node) -> Node.Produced { get }
+    var getValue: @MainActor @Sendable (Node) -> Node.Produced { get }
 }
 
 @usableFromInline
 internal struct Override<Node: Atom>: OverrideProtocol {
     @usableFromInline
     let isScoped: Bool
     @usableFromInline
-    let getValue: @Sendable (Node) -> Node.Produced
+    let getValue: @MainActor @Sendable (Node) -> Node.Produced
 
     @usableFromInline
-    init(isScoped: Bool, getValue: @escaping @Sendable (Node) -> Node.Produced) {
+    init(isScoped: Bool, getValue: @escaping @MainActor @Sendable (Node) -> Node.Produced) {
         self.isScoped = isScoped
         self.getValue = getValue
     }

Sources/Atoms/Deprecated.swift

@@ -59,12 +59,12 @@ public extension AtomScope {
     }
 
     @available(*, deprecated, renamed: "scopedOverride(_:with:)")
-    func override<Node: Atom>(_ atom: Node, with value: @escaping @Sendable (Node) -> Node.Produced) -> Self {
+    func override<Node: Atom>(_ atom: Node, with value: @escaping @MainActor @Sendable (Node) -> Node.Produced) -> Self {
         scopedOverride(atom, with: value)
     }
 
     @available(*, deprecated, renamed: "scopedOverride(_:with:)")
-    func override<Node: Atom>(_ atomType: Node.Type, with value: @escaping @Sendable (Node) -> Node.Produced) -> Self {
+    func override<Node: Atom>(_ atomType: Node.Type, with value: @escaping @MainActor @Sendable (Node) -> Node.Produced) -> Self {
         scopedOverride(atomType, with: value)
     }
 }