public async Task <IEnumerable <JitResult> > Update(Jitter jitter)
{
if (doc == null)
{
return(empty);
}
var offset = doc.Editor.CaretOffset;
var proj = doc.Project;
if (proj == null)
{
return(empty);
}
var roslynDoc = doc.AnalysisDocument;
if (roslynDoc == null)
{
return(empty);
}
cancellationTokenSource.Cancel();
cancellationTokenSource = new CancellationTokenSource();
var token = cancellationTokenSource.Token;
return(await Task.Run(async() =>
{
var sm = await roslynDoc.GetSemanticModelAsync(token);
// member
var memberSymbol = sm.GetEnclosingSymbol(offset, token);
if (memberSymbol == null)
{
return empty;
}
string[] parameterTypeNames = Array.Empty <string>();
if (memberSymbol is IMethodSymbol methodSymbol)
{
parameterTypeNames = methodSymbol.Parameters.Select(x => x.Type.ToDisplayString(SymbolDisplayFormat.MinimallyQualifiedFormat)).ToArray();
}
else if (!(memberSymbol is IPropertySymbol))
{
return empty;
}
var compilation = await roslynDoc.Project.GetCompilationAsync(token);
var tempFile = Path.GetTempFileName();
try
{
using (var stream = File.OpenWrite(tempFile))
{
var emitResult = compilation.Emit(stream, options: new Microsoft.CodeAnalysis.Emit.EmitOptions() cancellationToken: token);
}
if (!emitResult.Success)
{
return Enumerable.Repeat(JitResult.Error, 1);
}
var result = new CompileResult(tempFile);
// type
var typeName = memberSymbol.ContainingType.ToDisplayString(format);
return jitter.Jit(result, new MethodDescription(typeName, memberSymbol.MetadataName, parameterTypeNames));
}
finally
{
File.Delete(tempFile);
}
}, token));
}
