forked from OmniSharp/omnisharp-roslyn
/
GoToDefinitionHelpers.cs
46 lines (41 loc) · 1.85 KB
/
GoToDefinitionHelpers.cs
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#nullable enable
using Microsoft.CodeAnalysis;
using Microsoft.CodeAnalysis.FindSymbols;
using OmniSharp.Extensions;
using System.Threading;
using System.Threading.Tasks;
namespace OmniSharp.Roslyn.CSharp.Services.Navigation
{
internal static class GoToDefinitionHelpers
{
internal static async Task<ISymbol?> GetDefinitionSymbol(Document document, int line, int column, CancellationToken cancellationToken)
{
var sourceText = await document.GetTextAsync(cancellationToken);
var position = sourceText.GetPositionFromLineAndOffset(line, column);
var symbol = await SymbolFinder.FindSymbolAtPositionAsync(document, position, cancellationToken);
return symbol switch
{
INamespaceSymbol => null,
// Always prefer the partial implementation over the definition
IMethodSymbol { IsPartialDefinition: true, PartialImplementationPart: var impl } => impl,
// Don't return property getters/settings/initers
IMethodSymbol { AssociatedSymbol: IPropertySymbol } => null,
_ => symbol
};
}
internal static async Task<FileLinePositionSpan?> GetMetadataMappedSpan(
Document document,
ISymbol symbol,
IExternalSourceService externalSourceService,
CancellationToken cancellationToken)
{
var (metadataDocument, _) = await externalSourceService.GetAndAddExternalSymbolDocument(document.Project, symbol, cancellationToken);
if (metadataDocument != null)
{
var metadataLocation = await externalSourceService.GetExternalSymbolLocation(symbol, metadataDocument, cancellationToken);
return metadataLocation.GetMappedLineSpan();
}
return null;
}
}
}