8000 How to run a script using CompilationDependencyResolver? · Issue #515 · dotnet-script/dotnet-script · GitHub
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8000 dfkeenan opened this issue Feb 22, 2020 · 2 comments
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How to run a script using CompilationDependencyResolver? #515

dfkeenan opened this issue Feb 22, 2020 · 2 comments

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@dfkeenan
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Hi,

I am trying to using the CompilationDependencyResolver for my own script runner but the scripts don't compile due to it not knowing what System.Object or System.Void is.

I naively tried:

Dotnet.Script.DependencyModel.Logging.LogFactory logFactory = (t) => (l, m, e) => Log.WriteLine(m);
dependencyResolver = new CompilationDependencyResolver(logFactory);
//...
using var file = File.Open(scriptFileName, FileMode.Open, FileAccess.Read, FileShare.ReadWrite);
using var loader = new InteractiveAssemblyLoader();
var dependencies = dependencyResolver.GetDependencies(path, new[] { scriptFileName }, true, "netcoreapp3.1");

var assemblyReferences = dependencies
                            .SelectMany(d => d.AssemblyPaths)
                            .ToArray();

var scriptOptions = ScriptOptions.Default
    .WithFilePath(scriptFileName)
    .WithMetadataResolver(new NuGetMetadataReferenceResolver(ScriptOptions.Default.MetadataResolver))
    .WithReferences(assemblyReferences)
    //.WithReferences(AssemblyReferences) - I was manually adding assemblies in the past
    .WithEmitDebugInformation(enableDebugging);

var script = CSharpScript.Create<SkiaPadScript>(file, scriptOptions, assemblyLoader:loader);

ScriptState<SkiaPadScript> result = await script.RunAsync();

My application targets netcoreapp3.1.

The script I am testing with is:

#! "netcoreapp3.1"
#r "nuget: SkiaPad.Scripting,1.0.0"
#r "nuget: Newtonsoft.Json,12.0.3"

using System;
using SkiaSharp;
using SkiaPad.Scripting;
using SkiaPad.Scripting.Mathematics;
using Newtonsoft.Json;
var paint = new SKPaint();

paint.Color = SKColors.Purple;

public void Start(ScriptContext context, SKCanvas canvas, SKRect bounds)
{    
    Console.WriteLine(JsonConvert.SerializeObject(paint));
}

public void Draw(ScriptContext context, SKCanvas canvas, SKRect bounds)
{
    canvas.Clear(SKColors.Yellow);
    
}

public void Dispose()
{

}

Any help would be greatly appreciated.

Thanks,
Daniel
@dfkeenan dfkeenan changed the title How to run a script using CompilationDependencyResolver How to run a script using CompilationDependencyResolver? Feb 22, 2020
@dfkeenan
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I am not sure if it is the correct way to do it. But doing this has made it work.

var loaded = AppDomain.CurrentDomain.GetAssemblies()
    .Where(a => !a.IsDynamic)
    .Select(a => a.Location)
    .ToDictionary(l => Path.GetFileName(l));

var dependencies = dependencyResolver.GetDependencies(path, new[] { scriptFileName }, true, "netcoreapp3.1");

var assemblyReferences = dependencies
                            .SelectMany(d => d.AssemblyPaths)
                            .Select(l => loaded.TryGetValue(Path.GetFileName(l), out var e) ? e : l)
                            .ToArray();

@seesharper
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Compilation dependencies are used by OmniSharp to provide language services like Intellisense. It is the runtime dependencies you need to compile and run a script

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@seesharper @dfkeenan
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