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// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
// See the LICENSE file in the project root for more information.
#nullable disable
using System.Collections.Generic;
using System.Collections.Immutable;
using System.Linq;
using System.Threading;
using System.Threading.Tasks;
using Microsoft.CodeAnalysis.Host;
using Microsoft.CodeAnalysis.Options;
using Microsoft.CodeAnalysis.Rename;
using Microsoft.CodeAnalysis.Rename.ConflictEngine;
using Microsoft.CodeAnalysis.Text;
using Roslyn.Utilities;
namespace Microsoft.CodeAnalysis.Editor
{
internal readonly struct InlineRenameLocation
{
public Document Document { get; }
public TextSpan TextSpan { get; }
public InlineRenameLocation(Document document, TextSpan textSpan) : this()
{
this.Document = document;
this.TextSpan = textSpan;
}
}
internal enum InlineRenameReplacementKind
{
NoConflict,
ResolvedReferenceConflict,
ResolvedNonReferenceConflict,
UnresolvedConflict,
Complexified,
}
internal enum InlineRenameFileRenameInfo
{
/// <summary>
/// This operation is not allowed
/// on the symbol being renamed
/// </summary>
NotAllowed,
/// <summary>
/// The type being renamed has multiple definition
/// locations which is not supported.
/// </summary>
TypeWithMultipleLocations,
/// <summary>
/// The type being renamed doesn't match the file
/// name prior to renaming
/// </summary>
TypeDoesNotMatchFileName,
/// <summary>
/// File rename is allowed
/// </summary>
Allowed
}
internal readonly struct InlineRenameReplacement
{
public InlineRenameReplacementKind Kind { get; }
public TextSpan OriginalSpan { get; }
public TextSpan NewSpan { get; }
public InlineRenameReplacement(InlineRenameReplacementKind kind, TextSpan originalSpan, TextSpan newSpan) : this()
{
this.Kind = kind;
this.OriginalSpan = originalSpan;
this.NewSpan = newSpan;
}
internal InlineRenameReplacement(RelatedLocation location, TextSpan newSpan)
: this(GetReplacementKind(location), location.ConflictCheckSpan, newSpan)
{
}
private static InlineRenameReplacementKind GetReplacementKind(RelatedLocation location)
{
switch (location.Type)
{
case RelatedLocationType.NoConflict:
return InlineRenameReplacementKind.NoConflict;
case RelatedLocationType.ResolvedReferenceConflict:
return InlineRenameReplacementKind.ResolvedReferenceConflict;
case RelatedLocationType.ResolvedNonReferenceConflict:
return InlineRenameReplacementKind.ResolvedNonReferenceConflict;
case RelatedLocationType.UnresolvableConflict:
case RelatedLocationType.UnresolvedConflict:
return InlineRenameReplacementKind.UnresolvedConflict;
default:
case RelatedLocationType.PossiblyResolvableConflict:
throw ExceptionUtilities.UnexpectedValue(location.Type);
}
}
}
internal interface IInlineRenameReplacementInfo
{
/// <summary>
/// The solution obtained after resolving all conflicts.
/// </summary>
Solution NewSolution { get; }
/// <summary>
/// Whether or not the replacement text entered by the user is valid.
/// </summary>
bool ReplacementTextValid { get; }
/// <summary>
/// The documents that need to be updated.
/// </summary>
IEnumerable<DocumentId> DocumentIds { get; }
/// <summary>
/// Returns all the replacements that need to be performed for the specified document.
/// </summary>
IEnumerable<InlineRenameReplacement> GetReplacements(DocumentId documentId);
}
internal static class InlineRenameReplacementInfoExtensions
{
public static IEnumerable<InlineRenameReplacementKind> GetAllReplacementKinds(this IInlineRenameReplacementInfo info)
{
var replacements = info.DocumentIds.SelectMany(info.GetReplacements);
return replacements.Select(r => r.Kind);
}
}
internal interface IInlineRenameLocationSet
{
/// <summary>
/// The set of locations that need to be updated with the replacement text that the user
/// has entered in the inline rename session. These are the locations are all relative
/// to the solution when the inline rename session began.
/// </summary>
IList<InlineRenameLocation> Locations { get; }
/// <summary>
/// Returns the set of replacements and their possible resolutions if the user enters the
/// provided replacement text and options. Replacements are keyed by their document id
/// and TextSpan in the original solution, and specify their new span and possible conflict
/// resolution.
/// </summary>
Task<IInlineRenameReplacementInfo> GetReplacementsAsync(string replacementText, SymbolRenameOptions options, CancellationToken cancellationToken);
}
internal interface IInlineRenameInfo
{
/// <summary>
/// Whether or not the entity at the selected location can be renamed.
/// </summary>
bool CanRename { get; }
/// <summary>
/// Provides the reason that can be displayed to the user if the entity at the selected
/// location cannot be renamed.
/// </summary>
string LocalizedErrorMessage { get; }
/// <summary>
/// The span of the entity that is being renamed.
/// </summary>
TextSpan TriggerSpan { get; }
/// <summary>
/// Whether or not this entity has overloads that can also be renamed if the user wants.
/// </summary>
bool HasOverloads { get; }
/// <summary>
/// True if overloads must be renamed (the user is not given a choice). Used if rename is invoked from within a nameof expression.
/// </summary>
bool MustRenameOverloads { get; }
/// <summary>
/// The short name of the symbol being renamed, for use in displaying information to the user.
/// </summary>
string DisplayName { get; }
/// <summary>
/// The full name of the symbol being renamed, for use in displaying information to the user.
/// </summary>
string FullDisplayName { get; }
/// <summary>
/// The glyph for the symbol being renamed, for use in displaying information to the user.
/// </summary>
Glyph Glyph { get; }
/// <summary>
/// The locations of the potential rename candidates for the symbol.
/// </summary>
ImmutableArray<DocumentSpan> DefinitionLocations { get; }
/// <summary>
/// Gets the final name of the symbol if the user has typed the provided replacement text
/// in the editor. Normally, the final name will be same as the replacement text. However,
/// that may not always be the same. For example, when renaming an attribute the replacement
/// text may be "NewName" while the final symbol name might be "NewNameAttribute".
/// </summary>
string GetFinalSymbolName(string replacementText);
/// <summary>
/// Returns the actual span that should be edited in the buffer for a given rename reference
/// location.
/// </summary>
TextSpan GetReferenceEditSpan(InlineRenameLocation location, string triggerText, CancellationToken cancellationToken);
/// <summary>
/// Returns the actual span that should be edited in the buffer for a given rename conflict
/// location.
/// </summary>
TextSpan? GetConflictEditSpan(InlineRenameLocation location, string triggerText, string replacementText, CancellationToken cancellationToken);
/// <summary>
/// Determine the set of locations to rename given the provided options. May be called
/// multiple times. For example, this can be called one time for the initial set of
/// locations to rename, as well as any time the rename options are changed by the user.
/// </summary>
Task<IInlineRenameLocationSet> FindRenameLocationsAsync(SymbolRenameOptions options, CancellationToken cancellationToken);
/// <summary>
/// Called before the rename is applied to the specified documents in the workspace. Return
/// <see langword="true"/> if rename should proceed, or <see langword="false"/> if it should be canceled.
/// </summary>
bool TryOnBeforeGlobalSymbolRenamed(Workspace workspace, IEnumerable<DocumentId> changedDocumentIDs, string replacementText);
/// <summary>
/// Called after the rename is applied to the specified documents in the workspace. Return
/// <see langword="true"/> if this operation succeeded, or <see langword="false"/> if it failed.
/// </summary>
bool TryOnAfterGlobalSymbolRenamed(Workspace workspace, IEnumerable<DocumentId> changedDocumentIDs, string replacementText);
/// <summary>
/// Returns information about the file rename capabilities of
/// an inline rename
/// </summary>
InlineRenameFileRenameInfo GetFileRenameInfo();
}
#nullable enable
/// <summary>
/// Language service that allows a language to participate in the editor's inline rename feature.
/// </summary>
internal interface IEditorInlineRenameService : ILanguageService
{
Task<IInlineRenameInfo> GetRenameInfoAsync(Document document, int position, CancellationToken cancellationToken);
}
}
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