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EventExtensions.cs
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EventExtensions.cs
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// Copyright (c) .NET Foundation and contributors. All rights reserved.
// Licensed under the MIT license. See LICENSE file in the project root for full license information.
using System.Collections.Generic;
using System.Collections.Immutable;
using System.Linq;
using Microsoft.CodeAnalysis.Text;
using Microsoft.DotNet.Interactive.Commands;
using Microsoft.DotNet.Interactive.Events;
using Microsoft.DotNet.Interactive.Parsing;
namespace Microsoft.DotNet.Interactive.Extensions
{
internal static class EventExtensions
{
public static LinePositionSpan CalculateLineOffsetFromParentCommand(this KernelEvent @event, LinePositionSpan initialRange)
{
if (initialRange is null)
{
return null;
}
var requestCommand = @event.Command as LanguageServiceCommand;
if (requestCommand?.Parent is LanguageServiceCommand parentRequest)
{
var requestPosition = requestCommand.LinePosition;
var lineOffset = parentRequest.LinePosition.Line - requestPosition.Line;
return new LinePositionSpan(
new LinePosition(initialRange.Start.Line + lineOffset, initialRange.Start.Character),
new LinePosition(initialRange.End.Line + lineOffset, initialRange.End.Character));
}
return initialRange;
}
public static IReadOnlyCollection<Diagnostic> RemapDiagnosticsFromRequestingCommand(this KernelEvent @event, IReadOnlyCollection<Diagnostic> diagnostics)
{
return @event.Command switch
{
SubmitCode submitCode
when submitCode.LanguageNode is { } => submitCode.LanguageNode.RemapDiagnosticsFromLanguageNode(diagnostics),
RequestDiagnostics requestDiagnostics
when requestDiagnostics.LanguageNode is { } => requestDiagnostics.LanguageNode.RemapDiagnosticsFromLanguageNode(diagnostics),
_ => diagnostics // no meaningful remapping can occur
};
}
private static IReadOnlyCollection<Diagnostic> RemapDiagnosticsFromLanguageNode(this LanguageNode languageNode, IReadOnlyCollection<Diagnostic> diagnostics)
{
var root = languageNode.SyntaxTree.GetRoot();
var initialSpan = languageNode.Span;
var sourceText = SourceText.From(root.Text);
var codePosition = sourceText.Lines.GetLinePositionSpan(initialSpan);
return diagnostics.Select(d => d.WithLinePositionSpan(
new LinePositionSpan(
new LinePosition(d.LinePositionSpan.Start.Line + codePosition.Start.Line, d.LinePositionSpan.Start.Character),
new LinePosition(d.LinePositionSpan.End.Line + codePosition.Start.Line, d.LinePositionSpan.End.Character))
)
).ToImmutableList();
}
}
}