ATLExecutionContext

@MainActor final class ATLExecutionContext

Overview

The ATL execution context serves as the main coordination layer for ATL transformations, delegating heavy computational operations to the underlying ECoreExecutionEngine while managing ATL-specific state such as helpers, rules, and trace links on the MainActor.

Architecture

Following the established swift-ecore pattern:

• Coordination: Handled on @MainActor for UI integration and command compatibility

• Computation: Delegated to ECoreExecutionEngine actor for performance

• Commands: Integrated with EMF command framework for undo/redo support

Integration with ECore

The context bridges ATL concepts to ECore fundamentals:

• ATL expressions → ECore expressions via ATLECoreBridge

• ATL models → ECore IModel interface via ATLModelAdapters

• ATL operations → ECoreExecutionEngine delegated calls

• ATL helpers → Runtime behavior injection

Example Usage

let context = ATLExecutionContext(
    module: atlModule,
    sources: ["IN": sourceModel],
    targets: ["OUT": targetModel],
    executionEngine: engine
)

let result = try await context.evaluateHelper("myHelper", arguments: [value])