Merge pull request #12 from PureSwift/feature/macros

Add Macros

Author: colemancda

.github/workflows/swift.yml

@@ -1,44 +1,37 @@
 name: Swift
-
 on: [push]
-
 jobs:
-  build:
-    name: Build
-    strategy:
-      matrix:
-        swift: [6.0.3]
-        os: [ubuntu-20.04, macos-latest]
-    runs-on: ${{ matrix.os }}
+
+  macos:
+    name: macOS
+    runs-on: macos-15
     steps:
-    - name: Install Swift
-      uses: slashmo/[email protected]
-      with:
-        version: ${{ matrix.swift }}
     - name: Checkout
-      uses: actions/checkout@v2
+      uses: actions/checkout@v4
     - name: Swift Version
       run: swift --version
     - name: Build (Debug)
       run: swift build -c debug
     - name: Build (Release)
       run: swift build -c release
-
-  test:
-    name: Test
+    - name: Test (Debug)
+      run: swift test -c debug
+  
+  linux:
+    name: Linux
     strategy:
       matrix:
-        swift: [6.0.3]
-        os: [ubuntu-20.04, macos-latest]
-    runs-on: ${{ matrix.os }}
+        container: ["swift:6.0.3", "swiftlang/swift:nightly"]
+    runs-on: ubuntu-latest
+    container: ${{ matrix.container }}-jammy
     steps:
-    - name: Install Swift
-      uses: slashmo/[email protected]
-      with:
-        version: ${{ matrix.swift }}
     - name: Checkout
-      uses: actions/checkout@v2
+      uses: actions/checkout@v4
     - name: Swift Version
       run: swift --version
+    - name: Build (Debug)
+      run: swift build -c debug
+    - name: Build (Release)
+      run: swift build -c release
     - name: Test (Debug)
-      run: swift test --configuration debug
+      run: swift test -c debug

Package.swift

@@ -1,5 +1,6 @@
 // swift-tools-version:6.0
 import PackageDescription
+import CompilerPluginSupport
 
 let package = Package(
     name: "CoreModel",
@@ -23,9 +24,18 @@ let package = Package(
             ]
         )
     ],
+    dependencies: [
+        .package(
+            url: "https://github.com/apple/swift-syntax.git",
+            from: "600.0.1"
+        )
+    ],
     targets: [
         .target(
-            name: "CoreModel"
+            name: "CoreModel",
+            dependencies: [
+                "CoreModelMacros"
+            ]
         ),
         .target(
             name: "CoreDataModel",
@@ -36,10 +46,24 @@ let package = Package(
                 .swiftLanguageMode(.v5)
             ]
         ),
+        .macro(
+          name: "CoreModelMacros",
+          dependencies: [
+              .product(
+                  name: "SwiftSyntaxMacros",
+                  package: "swift-syntax"
+              ),
+              .product(
+                  name: "SwiftCompilerPlugin",
+                  package: "swift-syntax"
+              )
+          ]
+        ),
         .testTarget(
             name: "CoreModelTests",
             dependencies: [
                 "CoreModel",
+                "CoreModelMacros",
                 .byName(
                     name: "CoreDataModel",
                     condition: .when(platforms: [.macOS, .iOS, .macCatalyst, .watchOS, .tvOS, .visionOS])

Sources/CoreModel/Macros.swift

@@ -0,0 +1,24 @@
+//
+//  Macros.swift
+//  CoreModel
+//
+//  Created by Alsey Coleman Miller on 6/17/25.
+//
+
+@attached(member, names: arbitrary)
+public macro Entity(_ name: String? = nil) = #externalMacro(
+    module: "CoreModelMacros",
+    type: "EntityMacro"
+)
+
+@attached(peer)
+public macro Attribute(_ type: AttributeType? = nil) = #externalMacro(
+    module: "CoreModelMacros",
+    type: "AttributeMacro"
+)
+
+@attached(peer)
+public macro Relationship<T: CoreModel.Entity>(destination: T.Type, inverse: T.CodingKeys) = #externalMacro(
+    module: "CoreModelMacros",
+    type: "RelationshipMacro"
+)

Sources/CoreModelMacros/Attribute.swift

@@ -0,0 +1,42 @@
+//
+//  Attribute.swift
+//  CoreModel
+//
+//  Created by Alsey Coleman Miller on 6/17/25.
+//
+
+import Foundation
+import SwiftSyntax
+import SwiftSyntaxBuilder
+import SwiftSyntaxMacros
+
+public struct AttributeMacro: PeerMacro {
+    public static func expansion(
+        of node: AttributeSyntax,
+        providingPeersOf declaration: some DeclSyntaxProtocol,
+        in context: some MacroExpansionContext
+    ) throws -> [DeclSyntax] {
+
+        // Tag only, logic handled in EntityMacro
+        return []
+    }
+}
+
+internal func inferAttributeType(from type: String) -> String? {
+    switch type {
+        case "String": return ".string"
+        case "Data": return ".data"
+        case "Bool": return ".bool"
+        case "Int16": return ".int16"
+        case "Int32": return ".int32"
+        case "Int64": return ".int64"
+        case "Int": return ".int64"
+        case "Float": return ".float"
+        case "Double": return ".double"
+        case "Date": return ".date"
+        case "UUID": return ".uuid"
+        case "URL": return ".url"
+        case "Decimal": return ".decimal"
+        default: return nil
+    }
+}