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Intellisense hover handler
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@MarkMpn
MarkMpn committed Dec 2, 2022
1 parent 1387cd6 commit 432c742
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Showing 2 changed files with 71 additions and 97 deletions.
1 change: 1 addition & 0 deletions MarkMpn.Sql4Cds.LanguageServer/Autocomplete.cs
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Expand Up @@ -10,6 +10,7 @@
using Microsoft.Crm.Sdk.Messages;
using Microsoft.Xrm.Sdk;
using Microsoft.Xrm.Sdk.Metadata;
using OmniSharp.Extensions.LanguageServer.Protocol.Models;
using static MarkMpn.Sql4Cds.FunctionMetadata;

namespace MarkMpn.Sql4Cds
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167 changes: 70 additions & 97 deletions MarkMpn.Sql4Cds.LanguageServer/AutocompleteHandler.cs
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Expand Up @@ -3,14 +3,16 @@
using System.Diagnostics;
using System.Linq;
using System.Text;
using System.Text.RegularExpressions;
using System.Threading;
using System.Threading.Tasks;
using MediatR;
using OmniSharp.Extensions.JsonRpc;
using OmniSharp.Extensions.LanguageServer.Protocol.Models;

namespace MarkMpn.Sql4Cds.LanguageServer
{
class AutocompleteHandler : IRequestHandler<TextDocumentPosition, CompletionItem[]>, IJsonRpcHandler
class AutocompleteHandler : IRequestHandler<TextDocumentPosition, CompletionItem[]>, IRequestHandler<TextDocumentPositionHover, Hover>, IJsonRpcHandler
{
private readonly TextDocumentManager _doc;
private readonly ConnectionManager _con;
Expand All @@ -24,6 +26,8 @@ public AutocompleteHandler(TextDocumentManager doc, ConnectionManager con)
public Task<CompletionItem[]> Handle(TextDocumentPosition request, CancellationToken cancellationToken)
{
var doc = _doc.GetContent(request.TextDocument.Uri);
var lines = doc.Split('\n');
var pos = lines.Take(request.Position.Line).Sum(line => line.Length + 1) + request.Position.Character - 1;
var con = _con.GetConnection(request.TextDocument.Uri);
EntityCache.TryGetEntities(con.DataSource.Connection, out var entities);
var ac = new Autocomplete(new Dictionary<string, AutocompleteDataSource>
Expand All @@ -37,8 +41,6 @@ public Task<CompletionItem[]> Handle(TextDocumentPosition request, CancellationT
}
},
con.DataSource.Name);
var lines = doc.Split('\n');
var pos = lines.Take(request.Position.Line - 1).Sum(line => line.Length) + request.Position.Character - 1;
var suggestions = ac.GetSuggestions(doc, pos);
return Task.FromResult(suggestions.Select(s => new CompletionItem
{
Expand All @@ -49,6 +51,71 @@ public Task<CompletionItem[]> Handle(TextDocumentPosition request, CancellationT
Kind = s.ImageIndex
}).ToArray());
}

public Task<Hover> Handle(TextDocumentPositionHover request, CancellationToken cancellationToken)
{
var doc = _doc.GetContent(request.TextDocument.Uri);
var lines = doc.Split('\n');
var pos = lines.Take(request.Position.Line).Sum(line => line.Length + 1) + request.Position.Character - 1;
var wordEnd = new Regex("\\b").Match(doc, pos);

if (!wordEnd.Success)
return Task.FromResult<Hover>(null);

var con = _con.GetConnection(request.TextDocument.Uri);
EntityCache.TryGetEntities(con.DataSource.Connection, out var entities);
var ac = new Autocomplete(new Dictionary<string, AutocompleteDataSource>
{
[con.DataSource.Name] = new AutocompleteDataSource
{
Name = con.DataSource.Name,
Entities = entities,
Metadata = con.DataSource.Metadata,
Messages = con.DataSource.MessageCache
}
},
con.DataSource.Name);
var suggestions = ac.GetSuggestions(doc, pos);
var exactSuggestions = suggestions.Where(suggestion => suggestion.Text.Length <= wordEnd.Index && doc.Substring(wordEnd.Index - suggestion.CompareText.Length, suggestion.CompareText.Length).Equals(suggestion.CompareText, StringComparison.OrdinalIgnoreCase)).ToList();

if (exactSuggestions.Count != 1)
return Task.FromResult<Hover>(null);

return Task.FromResult(new Hover
{
Range = new OmniSharp.Extensions.LanguageServer.Protocol.Models.Range
{
Start = new OmniSharp.Extensions.LanguageServer.Protocol.Models.Position
{
Line = request.Position.Line,
Character = request.Position.Character + wordEnd.Index - pos - exactSuggestions[0].Text.Length
},
End = new OmniSharp.Extensions.LanguageServer.Protocol.Models.Position
{
Line = request.Position.Line,
Character = request.Position.Character + wordEnd.Index - pos
}
},
Contents = new MarkedStringsOrMarkupContent(
new OmniSharp.Extensions.LanguageServer.Protocol.Models.MarkedString("**" + exactSuggestions[0].ToolTipTitle + "**"),
new OmniSharp.Extensions.LanguageServer.Protocol.Models.MarkedString(exactSuggestions[0].ToolTipText))
});
}
}

[Method("textDocument/hover", Direction.ClientToServer)]
[Serial]
class TextDocumentPositionHover : IRequest<Hover>
{
/// <summary>
/// Gets or sets the document identifier.
/// </summary>
public TextDocumentIdentifier TextDocument { get; set; }

/// <summary>
/// Gets or sets the position in the document.
/// </summary>
public Position Position { get; set; }
}

[Method("textDocument/completion", Direction.ClientToServer)]
Expand Down Expand Up @@ -79,100 +146,6 @@ public class TextDocumentIdentifier
public string Uri { get; set; }
}

[DebuggerDisplay("Kind = {Kind.ToString()}, Label = {Label}, Detail = {Detail}")]
public class CompletionItem
{
public string Label { get; set; }

public CompletionItemKind? Kind { get; set; }

public string Detail { get; set; }

/// <summary>
/// Gets or sets the documentation string for the completion item.
/// </summary>
public string Documentation { get; set; }

public string SortText { get; set; }

public string FilterText { get; set; }

public string InsertText { get; set; }

public TextEdit TextEdit { get; set; }

/// <summary>
/// Gets or sets a custom data field that allows the server to mark
/// each completion item with an identifier that will help correlate
/// the item to the previous completion request during a completion
/// resolve request.
/// </summary>
public object Data { get; set; }

/// <summary>
/// Exposing a command field for a completion item for passing telemetry
/// </summary>
public Command Command { get; set; }

/// <summary>
/// Whether this completion item is preselected or not
/// </summary>
public bool? Preselect { get; set; }
}

[DebuggerDisplay("NewText = {NewText}, Range = {Range.Start.Line}:{Range.Start.Character} - {Range.End.Line}:{Range.End.Character}")]
public class TextEdit
{
public Range Range { get; set; }

public string NewText { get; set; }
}

public enum CompletionItemKind
{
Text = 1,
Method = 2,
Function = 3,
Constructor = 4,
Field = 5,
Variable = 6,
Class = 7,
Interface = 8,
Module = 9,
Property = 10,
Unit = 11,
Value = 12,
Enum = 13,
Keyword = 14,
Snippet = 15,
Color = 16,
File = 17,
Reference = 18
}

public class Command
{
/// <summary>
/// Title of the command.
/// </summary>
public string Title { get; set; }

/// <summary>
/// The identifier of the actual command handler, like `vsintellicode.completionItemSelected`.
/// </summary>
public string command { get; set; }

/// <summary>
/// A tooltip for the command, when represented in the UI.
/// </summary>
public string Tooltip { get; set; }

/// <summary>
/// Arguments that the command handler should be invoked with.
/// </summary>
public object[] Arguments { get; set; }
}

[DebuggerDisplay("Position = {Line}:{Character}")]
public class Position
{
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