Programmatic model generation sketch

Sources/Cadova/Concrete Layer/Generator.swift

@@ -0,0 +1,42 @@
+import Foundation
+
+public struct Generator {
+    private let evaluationContext = EvaluationContext()
+
+    public init() {}
+
+    public func build(
+        named name: String? = nil,
+        options: ModelOptions...,
+        @ModelContentBuilder content: @Sendable @escaping () -> [BuildDirective]
+    ) async throws -> Product {
+        let directives = content()
+        let options = ModelOptions(options).adding(modelName: name, directives: directives)
+        let environment = EnvironmentValues.defaultEnvironment.adding(directives: directives, modelOptions: options)
+
+        let (dataProvider, warnings) = try await directives.build(with: options, in: environment, context: evaluationContext)
+        return Product(dataProvider: dataProvider, evaluationContext: evaluationContext, buildWarnings: warnings)
+    }
+}
+
+public struct Product {
+    private let dataProvider: OutputDataProvider
+    private let evaluationContext: EvaluationContext
+    public let buildWarnings: [BuildWarning]
+
+    public var fileExtension: String { dataProvider.fileExtension }
+
+    internal init(dataProvider: OutputDataProvider, evaluationContext: EvaluationContext, buildWarnings: [BuildWarning]) {
+        self.dataProvider = dataProvider
+        self.evaluationContext = evaluationContext
+        self.buildWarnings = buildWarnings
+    }
+
+    public func data() async throws -> Data {
+        try await dataProvider.generateOutput(context: evaluationContext)
+    }
+
+    public func write(to fileURL: URL) async throws {
+        try await dataProvider.writeOutput(to: fileURL, context: evaluationContext)
+    }
+}