An ActionScript 3 runtime and bytecode-to-IL compiler for .NET, implemented in C#.

This project targets .NET Standard 2.1, which is compatible with .NET Core 3.0, Mono 6.4 and some other platforms.

.NET Framework is not supported.

The runtime dynamically compiles ActionScript 3 bytecode into IL, so it will not work on AOT-only platforms (such as iOS).

Sample usage code is available here.

• Full implementation of the ActionScript Virtual Machine 2 specification.
• Run-time performance of AS3 code is comparable to equivalent C# code when everything is statically typed (no untyped variables or dynamic property access).
• Attribute based API for exposing .NET classes to AS3.
• Supports all ActionScript 3 top-level classes and functions.
• Full support for E4X (ECMAScript for XML).
• Supports AVM2 global memory instructions (used by code compiled with Alchemy/CrossBridge).

API documentation can be generated using the generateApiDocs.py Python script. This requires docfx to be installed.

• Mariana.AVM2: ActionScript 3 runtime and bytecode compiler.
• Mariana.CodeGen: IL code generation library used by the AS3 compiler.
• Mariana.Common: Reusable components.

Build with dotnet build -c config where config is either Debug (for debug build) or Release (for release build).

Run dotnet test when in a test project directory.

To run specific test classes or methods, pass a --filter argument.

Caution: Some tests are long running