Refactor Swift package structure. (#2851)

Summary:
Pull Request resolved: #2851

.

Reviewed By: digantdesai

Differential Revision: D55762167

fbshipit-source-id: 24550d4f549f0467894e546c6d3aa669af4545b5

Author: shoumikhin

Package.swift

@@ -9,95 +9,70 @@
 
 import PackageDescription
 
-let url = "https://ossci-ios.s3.amazonaws.com/executorch"
 let version = "0.1.0"
-let coreml_sha256 = "78d853d87be478696e56e658aa4ff17d47ae185a9a6a36316c821fa8b2d3aacd"
-let custom_sha256 = "f059f6716298403dff89a952a70e323c54911be140d05f2467bd5cc61aaefae3"
-let executorch_sha256 = "ba9a0c2b061afaedbc3c5454040a598b1371170bd9d9a30b7163c20e23339841"
-let mps_sha256 = "39542a8671cca1aa627102aa47785d0f6e2dfe9a40e2c22288a755057b00fbfa"
-let optimized_sha256 = "1d84fa16197bb6f0dec01aaa29d2a140c0e14d8e5e92630a7b4dd6f48012506d"
-let portable_sha256 = "4993904f89ecb4476677ff3c072ed1a314a608170f10d364cfd23947851ccbf3"
-let quantized_sha256 = "8d35ee0e7ca77c19782eaea07a1888f576cda679f8a4a5edb03d80ebe858047e"
-let xnnpack_sha256 = "380e5185c4c48ede7cc0d0f0657ffb26df83cd9f55813d78593aea8a93942caf"
-
-struct Framework {
-  let name: String
-  let checksum: String
-  var frameworks: [String] = []
-  var libraries: [String] = []
-
-  func target() -> Target {
-    .binaryTarget(
-      name: name,
-      url: "\(url)/\(name)-\(version).zip",
-      checksum: checksum
-    )
-  }
-
-  func dependencies() -> Target {
-    .target(
-      name: "\(name)_dependencies",
-      dependencies: [.target(name: name)],
-      path: ".swift/\(name)",
-      linkerSettings:
-          frameworks.map { .linkedFramework($0) } +
-          libraries.map { .linkedLibrary($0) }
-    )
-  }
-}
-
-let frameworks = [
-  Framework(
-    name: "coreml_backend",
-    checksum: coreml_sha256,
-    frameworks: [
+let url = "https://ossci-ios.s3.amazonaws.com/executorch/"
+let deliverables = [
+  "coreml_backend": [
+    "sha256": "78d853d87be478696e56e658aa4ff17d47ae185a9a6a36316c821fa8b2d3aacd",
+    "frameworks": [
       "Accelerate",
       "CoreML",
     ],
-    libraries: [
+    "libraries": [
       "sqlite3",
-    ]
-  ),
-  Framework(
-    name: "custom_backend",
-    checksum: custom_sha256
-  ),
-  Framework(
-    name: "executorch",
-    checksum: executorch_sha256
-  ),
-  Framework(
-    name: "mps_backend",
-    checksum: mps_sha256,
-    frameworks: [
+    ],
+  ],
+  "custom_backend": [
+    "sha256": "f059f6716298403dff89a952a70e323c54911be140d05f2467bd5cc61aaefae3",
+  ],
+  "executorch": [
+    "sha256": "ba9a0c2b061afaedbc3c5454040a598b1371170bd9d9a30b7163c20e23339841",
+  ],
+  "mps_backend": [
+    "sha256": "39542a8671cca1aa627102aa47785d0f6e2dfe9a40e2c22288a755057b00fbfa",
+    "frameworks": [
       "Metal",
       "MetalPerformanceShaders",
       "MetalPerformanceShadersGraph",
-    ]
-  ),
-  Framework(
-    name: "optimized_backend",
-    checksum: optimized_sha256
-  ),
-  Framework(
-    name: "portable_backend",
-    checksum: portable_sha256
-  ),
-  Framework(
-    name: "quantized_backend",
-    checksum: quantized_sha256
-  ),
-  Framework(
-    name: "xnnpack_backend",
-    checksum: xnnpack_sha256
-  )
+    ],
+  ],
+  "optimized_backend": [
+    "sha256": "1d84fa16197bb6f0dec01aaa29d2a140c0e14d8e5e92630a7b4dd6f48012506d",
+  ],
+  "portable_backend": [
+    "sha256": "4993904f89ecb4476677ff3c072ed1a314a608170f10d364cfd23947851ccbf3",
+  ],
+  "quantized_backend": [
+    "sha256": "8d35ee0e7ca77c19782eaea07a1888f576cda679f8a4a5edb03d80ebe858047e",
+  ],
+  "xnnpack_backend": [
+    "sha256": "380e5185c4c48ede7cc0d0f0657ffb26df83cd9f55813d78593aea8a93942caf",
+  ],
 ]
 
 let package = Package(
   name: "executorch",
   platforms: [
     .iOS(.v15),
   ],
-  products: frameworks.map { .library(name: $0.name, targets: ["\($0.name)_dependencies"]) },
-  targets: frameworks.flatMap { [$0.target(), $0.dependencies()] }
+  products: deliverables.keys.map { key in
+    .library(name: key, targets: ["\(key)_dependencies"])
+  }.sorted { $0.name < $1.name },
+  targets: deliverables.flatMap { key, value -> [Target] in
+    [
+      .binaryTarget(
+        name: key,
+        url: "\(url)\(key)-\(version).zip",
+        checksum: value["sha256"] as? String ?? ""
+      ),
+      .target(
+        name: "\(key)_dependencies",
+        dependencies: [.target(name: key)],
+        path: ".swift/\(key)",
+        linkerSettings:
+          (value["frameworks"] as? [String] ?? []).map { .linkedFramework($0) } +
+          (value["libraries"] as? [String] ?? []).map { .linkedLibrary($0) }
+      ),
+    ]
+  }
 )