File: CompilationFailedException.cs
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Project: src\src\Mvc\Mvc.Razor.RuntimeCompilation\src\Microsoft.AspNetCore.Mvc.Razor.RuntimeCompilation.csproj (Microsoft.AspNetCore.Mvc.Razor.RuntimeCompilation)
// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
 
using System.Linq;
using Microsoft.AspNetCore.Diagnostics;
 
namespace Microsoft.AspNetCore.Mvc.Razor.RuntimeCompilation;
 
internal sealed class CompilationFailedException : Exception, ICompilationException
{
    public CompilationFailedException(
            IEnumerable<CompilationFailure> compilationFailures)
        : base(FormatMessage(compilationFailures))
    {
        ArgumentNullException.ThrowIfNull(compilationFailures);
 
        CompilationFailures = compilationFailures;
    }
 
    public IEnumerable<CompilationFailure> CompilationFailures { get; }
 
    private static string FormatMessage(IEnumerable<CompilationFailure> compilationFailures)
    {
        return Resources.CompilationFailed + Environment.NewLine +
            string.Join(
                Environment.NewLine,
                compilationFailures.SelectMany(f => f.Messages!).Select(message => message!.FormattedMessage));
    }
}