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Programming language: Scheme
License: GNU General Public License v3.0 or later
Tags: Compiler    
Latest version: v1.0.239

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README

IronScheme

IronScheme aims to be a R6RS conforming Scheme-like implementation for all .NET implementations and platforms.

IronScheme implements over 99% of the R6RS specification and specified behavior.

IronScheme's macro system is based on psyntax, and thus behaves similar to other implementations using psyntax, ie Icarus, Vicare, Chez.

Build status

Building

  1. Open the IronSchemeCore.sln file in VS2019/2022
  2. Set startup project as IronScheme.Console

Alternatively, using the build.cmd batchfile in the IronScheme directory.

Note: the VS solution is for an already bootstrapped configuration. It can behave differently to the IronScheme.dll in the release package. This is mostly to just provide debugging and advanced usage of IronScheme.

Running on Windows

Run the IronScheme.Console.exe for the runtime and bitness you want to target.

V2 requires .NET3.5. V4 requires requires .NET4.0 or higher. Pretty much any running Windows should have one or both of those.

You can also run it with .NET Core, which has no persisted compilation functionality. It may load precompiled libraries, but if it fails to load, it will fallback to runtime compilation. A warning will be display in that case.

By default, it will run on the lowest supported .NET Core runtime installed.

To Run it on a specific .NET Core version, use the --fx-version option with dotnet.

Example to run on .NET 6.0 when you have multiple framework versions installed:

dotnet --fx-version 6.0.0 IronScheme.ConsoleCore.dll <args...>

or

IronScheme.ConsoleCore.exe --fx-version 6.0.0 <args...>

To run on the latest installed .NET Core version:

IronScheme.ConsoleCore.exe --roll-forward LatestMajor <args...>

Running on Linux/MacOS

The preferred way to run on non-Windows OS is to use .NET Core. You can also run IronScheme on Mono, but your mileage may vary.

# get .NET Core if you dont have it already
wget https://dot.net/v1/dotnet-install.sh
chmod +x dotnet-install.sh
dotnet-install.sh --channel Current --runtime dotnet # v2.1+
export -p PATH="$HOME/.dotnet:$PATH"
# Download 
wget https://github.com/IronScheme/IronScheme/releases/download/<latest release>.zip
unzip <latest release>.zip
cd IronScheme
alias ironscheme="dotnet IronScheme.ConsoleCore.dll"
# if you prefer Mono
# alias ironscheme="mono IronScheme.Console-v4.exe"

ironscheme

Library usage

Reference IronScheme.dll from your project.

using IronScheme;

class Program
{
    static void Main(string[] args)
    {
        "(display 'hello-world)".Eval();
    }
} 

Or with C# 9 and later as:

using IronScheme;

"(display 'hello-world)".Eval();

Running tests

After building, you can use NUnit to run IronScheme.Tests.dll in the IronScheme.Console bin folder.

There is also a batch file in the IronScheme directory called test.cmd. You can pass the /verbose to the batch file to see complete output in case of failures.

Note

Make sure that peverify is in your PATH. The test fixtures are designed to execute in a specfic order. The tests will not take less than 6 minutes to complete.

Nuget feed

On Nuget.org and CI-builds on https://ci.appveyor.com/nuget/ironscheme

Issues/PR

Please @leppie in your issues/PR's, else I will probably not know about it. I do not actively monitor Github. If I still dont answer, nag me on Twitter, also @leppie.