Initial commit

Author: NeedleInAJayStack

.gitignore

@@ -0,0 +1,8 @@
+.DS_Store
+/.build
+/Packages
+xcuserdata/
+DerivedData/
+.swiftpm/configuration/registries.json
+.swiftpm/xcode/package.xcworkspace/contents.xcworkspacedata
+.netrc

Package.swift

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+// swift-tools-version: 6.2
+// The swift-tools-version declares the minimum version of Swift required to build this package.
+
+import PackageDescription
+
+let package = Package(
+    name: "graphql-generator",
+    products: [
+        // Products can be used to vend plugins, making them visible to other packages.
+        .plugin(
+            name: "graphql-generator",
+            targets: ["graphql-generator"]
+        ),
+    ],
+    targets: [
+        // Targets are the basic building blocks of a package, defining a module or a test suite.
+        // Targets can depend on other targets in this package and products from dependencies.
+        .plugin(
+            name: "graphql-generator",
+            capability: .buildTool()
+        ),
+    ]
+)

Plugins/graphql-generator.swift

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+import PackagePlugin
+import struct Foundation.URL
+
+@main
+struct graphql_generator: BuildToolPlugin {
+    /// Entry point for creating build commands for targets in Swift packages.
+    func createBuildCommands(context: PluginContext, target: Target) async throws -> [Command] {
+        // This plugin only runs for package targets that can have source files.
+        guard let sourceFiles = target.sourceModule?.sourceFiles else { return [] }
+
+        // Find the code generator tool to run (replace this with the actual one).
+        let generatorTool = try context.tool(named: "my-code-generator")
+
+        // Construct a build command for each source file with a particular suffix.
+        return sourceFiles.map(\.url).compactMap {
+            createBuildCommand(for: $0, in: context.pluginWorkDirectoryURL, with: generatorTool.url)
+        }
+    }
+}
+
+#if canImport(XcodeProjectPlugin)
+import XcodeProjectPlugin
+
+extension graphql_generator: XcodeBuildToolPlugin {
+    // Entry point for creating build commands for targets in Xcode projects.
+    func createBuildCommands(context: XcodePluginContext, target: XcodeTarget) throws -> [Command] {
+        // Find the code generator tool to run (replace this with the actual one).
+        let generatorTool = try context.tool(named: "my-code-generator")
+
+        // Construct a build command for each source file with a particular suffix.
+        return target.inputFiles.map(\.url).compactMap {
+            createBuildCommand(for: $0, in: context.pluginWorkDirectoryURL, with: generatorTool.url)
+        }
+    }
+}
+
+#endif
+
+extension graphql_generator {
+    /// Shared function that returns a configured build command if the input files is one that should be processed.
+    func createBuildCommand(for inputPath: URL, in outputDirectoryPath: URL, with generatorToolPath: URL) -> Command? {
+        // Skip any file that doesn't have the extension we're looking for (replace this with the actual one).
+        guard inputPath.pathExtension == "my-input-suffix" else { return .none }
+        
+        // Return a command that will run during the build to generate the output file.
+        let inputName = inputPath.lastPathComponent
+        let outputName = inputPath.deletingPathExtension().lastPathComponent + ".swift"
+        let outputPath = outputDirectoryPath.appendingPathComponent(outputName)
+        return .buildCommand(
+            displayName: "Generating \(outputName) from \(inputName)",
+            executable: generatorToolPath,
+            arguments: ["\(inputPath)", "-o", "\(outputPath)"],
+            inputFiles: [inputPath],
+            outputFiles: [outputPath]
+        )
+    }
+}