Implemented "Go to Implementation". Closes dotnet#37

CHANGELOG.md

@@ -1,3 +1,9 @@
+## 1.8.0 _(Not Yet Released)_
+
+#### Go to Implementation
+
+* Added support for "Go to Implementation" and "Peek Implementation" introduced in Visual Studio Code 1.9. ([#37](https://github.com/OmniSharp/omnisharp-vscode/issues/37)) _(Contributed by [@ivanz](https://github.com/ivanz))_
+
 ## 1.7.0 (February 8, 2017)
 
 #### Syntax Hightlighting
@@ -83,15 +89,15 @@
     * Brings support for running all supported distros on top of Linux Kernel >= 4.6
 * Enable debugger support for Arch Linux ([#564](https://github.com/OmniSharp/omnisharp-vscode/issues/564))
 * Improve debugger install errors for macOS without openSSL symlinks ([#986](https://github.com/OmniSharp/omnisharp-vscode/pull/986)), and x86 Windows ([#998](https://github.com/OmniSharp/omnisharp-vscode/pull/998)).
-* Improve debugger performance using precompiled debugger binaries  ([#896](https://github.com/OmniSharp/omnisharp-vscode/issues/896))([#971](https://github.com/OmniSharp/omnisharp-vscode/issues/971)). 
+* Improve debugger performance using precompiled debugger binaries  ([#896](https://github.com/OmniSharp/omnisharp-vscode/issues/896))([#971](https://github.com/OmniSharp/omnisharp-vscode/issues/971)).
 
 #### Syntax Highlighting
 
 * Tons of great syntax highlighting fixes and support! _(All contributed by [@ivanz](https://github.com/ivanz))_
     * Fix for field declarations. ([#757](https://github.com/OmniSharp/omnisharp-vscode/issues/757))
     * Fix for generic types with multiple type parameters. ([#960](https://github.com/OmniSharp/omnisharp-vscode/issues/960))
     * Proper support for interpolated strings (verbatim and non-verbatim). ([#852](https://github.com/OmniSharp/omnisharp-vscode/issues/852))
-    * Fix for multi-line properties. ([#854](https://github.com/OmniSharp/omnisharp-vscode/issues/854)) 
+    * Fix for multi-line properties. ([#854](https://github.com/OmniSharp/omnisharp-vscode/issues/854))
     * Fixes for events, nested type references (e.g. `Root.IInterface<Something.Nested>`), variable declarations, nested classes, and fields spanning multiple lines
 
 #### Hover Tooltips
@@ -117,7 +123,7 @@
 * Ensure diagnostics are cleared in files when they are no longer needed. ([#858](https://github.com/OmniSharp/omnisharp-vscode/issues/858))
 * Enqueue requests for diagnostics in visible editors when the extension starts up. ([#843](https://github.com/OmniSharp/omnisharp-vscode/issues/843))
 * Provide fallback URLs for debugger downloads. ([#930](https://github.com/OmniSharp/omnisharp-vscode/issues/930))
-* Properly require .NET Framework 4.6 in the OmniSharp.exe.config file to ensure that the user is displayed a dialog on Windows machines that don't have .NET Framework 4.6 installed. ([#937](https://github.com/OmniSharp/omnisharp-vscode/issues/937))  
+* Properly require .NET Framework 4.6 in the OmniSharp.exe.config file to ensure that the user is displayed a dialog on Windows machines that don't have .NET Framework 4.6 installed. ([#937](https://github.com/OmniSharp/omnisharp-vscode/issues/937))
 * Fix issue with installing on non-English installations of Windows. ([#938](https://github.com/OmniSharp/omnisharp-vscode/issues/938))
 * Display platform information when acquiring runtime dependencies. ([#948](https://github.com/OmniSharp/omnisharp-vscode/issues/948))
 
@@ -165,7 +171,7 @@ Several new settings have been added:
 
 #### Performance
 
-* Major improvements have been made to editor performance. The communication with the OmniSharp server has been rewritten to allow long-running operations (such as gathering all errors and warnings) to queue while high priority operations (such as text buffer changes) run serially. ([#902](https://github.com/OmniSharp/omnisharp-vscode/pull/902)) _(Thanks to [@david-driscoll](https://github.com/david-driscoll) for his help with this change!)_ 
+* Major improvements have been made to editor performance. The communication with the OmniSharp server has been rewritten to allow long-running operations (such as gathering all errors and warnings) to queue while high priority operations (such as text buffer changes) run serially. ([#902](https://github.com/OmniSharp/omnisharp-vscode/pull/902)) _(Thanks to [@david-driscoll](https://github.com/david-driscoll) for his help with this change!)_
 
 #### Other Improvements
 

package.json

@@ -61,7 +61,7 @@
     "tslint-microsoft-contrib": "^2.0.12",
     "typescript": "^2.0.3",
     "vsce": "^1.7.0",
-    "vscode": "^1.0.0"
+    "vscode": "^1.0.3"
   },
   "runtimeDependencies": [
     {
@@ -300,7 +300,7 @@
     }
   ],
   "engines": {
-    "vscode": "^1.5.0"
+    "vscode": "^1.9.0"
   },
   "activationEvents": [
     "onLanguage:csharp",

src/features/implementationProvider.ts

@@ -0,0 +1,26 @@
+/*---------------------------------------------------------------------------------------------
+ *  Copyright (c) Microsoft Corporation. All rights reserved.
+ *  Licensed under the MIT License. See License.txt in the project root for license information.
+ *--------------------------------------------------------------------------------------------*/
+
+'use strict';
+
+import AbstractSupport from './abstractProvider';
+import { FindImplementationsRequest } from '../omnisharp/protocol';
+import * as serverUtils from '../omnisharp/utils';
+import { createRequest, toLocation } from '../omnisharp/typeConvertion';
+import { TextDocument, Position, CancellationToken, ImplementationProvider, ProviderResult, Definition } from 'vscode';
+
+export default class CSharpImplementationProvider extends AbstractSupport implements ImplementationProvider {
+    public provideImplementation(document: TextDocument, position: Position, token: CancellationToken): ProviderResult<Definition> {
+        const request = <FindImplementationsRequest>createRequest(document, position);
+
+        return serverUtils.findImplementations(this._server, request, token).then(response => {
+            if (!response || !response.QuickFixes) {
+                return;
+            }
+
+            return response.QuickFixes.map(fix => toLocation(fix));
+        });
+    }
+}

src/omnisharp/extension.ts

@@ -7,6 +7,7 @@ import * as vscode from 'vscode';
 import TelemetryReporter from 'vscode-extension-telemetry';
 
 import DefinitionProvider from '../features/definitionProvider';
+import ImplementationProvider from '../features/implementationProvider';
 import CodeLensProvider from '../features/codeLensProvider';
 import DefinitionMetadataDocumentProvider from '../features/definitionMetadataDocumentProvider';
 import DocumentHighlightProvider from '../features/documentHighlightProvider';
@@ -47,6 +48,7 @@ export function activate(context: vscode.ExtensionContext, reporter: TelemetryRe
         localDisposables.push(definitionMetadataDocumentProvider);
 
         localDisposables.push(vscode.languages.registerDefinitionProvider(documentSelector, new DefinitionProvider(server, definitionMetadataDocumentProvider)));
+        localDisposables.push(vscode.languages.registerImplementationProvider(documentSelector, new ImplementationProvider(server)));
         localDisposables.push(vscode.languages.registerCodeLensProvider(documentSelector, new CodeLensProvider(server)));
         localDisposables.push(vscode.languages.registerDocumentHighlightProvider(documentSelector, new DocumentHighlightProvider(server)));
         localDisposables.push(vscode.languages.registerDocumentSymbolProvider(documentSelector, new DocumentSymbolProvider(server)));

src/omnisharp/protocol.ts

@@ -21,6 +21,7 @@ export module Requests {
     export const FormatRange = '/formatRange';
     export const GetCodeActions = '/getcodeactions';
     export const GoToDefinition = '/gotoDefinition';
+    export const FindImplementations = '/findimplementations';
     export const Projects = '/projects';
     export const RemoveFromProject = '/removefromproject';
     export const Rename = '/rename';
@@ -70,6 +71,10 @@ export interface GoToDefinitionRequest extends Request
     WantMetadata?: boolean;
 }
 
+export interface FindImplementationsRequest extends Request
+{
+}
+
 export interface LinePositionSpanTextChange {
     NewText: string;
     StartLine: number;

src/omnisharp/utils.ts

@@ -25,6 +25,10 @@ export function filesChanged(server: OmniSharpServer, requests: protocol.Request
     return server.makeRequest<void>(protocol.Requests.FilesChanged, requests);
 }
 
+export function findImplementations(server: OmniSharpServer, request: protocol.FindImplementationsRequest, token: vscode.CancellationToken) {
+    return server.makeRequest<protocol.QuickFixResponse>(protocol.Requests.FindImplementations, request);
+}
+
 export function findSymbols(server: OmniSharpServer, request: protocol.FindSymbolsRequest, token: vscode.CancellationToken) {
     return server.makeRequest<protocol.FindSymbolsResponse>(protocol.Requests.FindSymbols, request, token);
 }