From 0c4d2e0ecc27f6ca3095be241c72f995bc0edf2f Mon Sep 17 00:00:00 2001
From: kieferrm <kieferrm@gmail.com>
Date: Wed, 21 Mar 2018 15:54:49 -0700
Subject: [PATCH 1/2] support for multi-location diagnostics

---
 lsp-sample/server/src/server.ts | 34 +++++++++++++++++++++++++++++++--
 1 file changed, 32 insertions(+), 2 deletions(-)

diff --git a/lsp-sample/server/src/server.ts b/lsp-sample/server/src/server.ts
index a86ee66c5..0242d812c 100644
--- a/lsp-sample/server/src/server.ts
+++ b/lsp-sample/server/src/server.ts
@@ -20,9 +20,13 @@ let documents: TextDocuments = new TextDocuments();
 // for open, change and close text document events
 documents.listen(connection);
 
+
+let shouldSendDiagnosticRelatedInformation: boolean = false;
+
 // After the server has started the client sends an initialize request. The server receives
 // in the passed params the rootPath of the workspace plus the client capabilities.
 connection.onInitialize((_params): InitializeResult => {
+	shouldSendDiagnosticRelatedInformation = _params.capabilities && _params.capabilities.diagnosticRelatedInformation;
 	return {
 		capabilities: {
 			// Tell the client that the server works in FULL text document sync mode
@@ -72,7 +76,8 @@ function validateTextDocument(textDocument: TextDocument): void {
 		let index = line.indexOf('typescript');
 		if (index >= 0) {
 			problems++;
-			diagnostics.push({
+
+			let diagnosic: Diagnostic = {
 				severity: DiagnosticSeverity.Warning,
 				range: {
 					start: { line: i, character: index },
@@ -80,7 +85,32 @@ function validateTextDocument(textDocument: TextDocument): void {
 				},
 				message: `${line.substr(index, 10)} should be spelled TypeScript`,
 				source: 'ex'
-			});
+			};
+			if (shouldSendDiagnosticRelatedInformation) {
+				diagnosic.relatedInformation = [
+					{
+						location: {
+							uri: textDocument.uri,
+							range: {
+								start: { line: i, character: index },
+								end: { line: i, character: index + 10 }
+							}
+						},
+						message: 'Spelling matters'
+					},
+					{
+						location: {
+							uri: textDocument.uri,
+							range: {
+								start: { line: i, character: index },
+								end: { line: i, character: index + 10 }
+							}
+						},
+						message: 'Particularly for names'
+					}
+				];
+			}
+			diagnostics.push(diagnosic);
 		}
 	}
 	// Send the computed diagnostics to VSCode.

From 227d7cb0015735d07a4a1c80827ed913faf2c804 Mon Sep 17 00:00:00 2001
From: kieferrm <kieferrm@gmail.com>
Date: Wed, 28 Mar 2018 11:16:55 -0700
Subject: [PATCH 2/2] move capabilities to textDocument

---
 lsp-sample/server/src/server.ts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lsp-sample/server/src/server.ts b/lsp-sample/server/src/server.ts
index 0242d812c..1cbf1ef52 100644
--- a/lsp-sample/server/src/server.ts
+++ b/lsp-sample/server/src/server.ts
@@ -26,7 +26,7 @@ let shouldSendDiagnosticRelatedInformation: boolean = false;
 // After the server has started the client sends an initialize request. The server receives
 // in the passed params the rootPath of the workspace plus the client capabilities.
 connection.onInitialize((_params): InitializeResult => {
-	shouldSendDiagnosticRelatedInformation = _params.capabilities && _params.capabilities.diagnosticRelatedInformation;
+	shouldSendDiagnosticRelatedInformation = _params.capabilities && _params.capabilities.textDocument && _params.capabilities.textDocument.publishDiagnostics && _params.capabilities.textDocument.publishDiagnostics.relatedInformation;
 	return {
 		capabilities: {
 			// Tell the client that the server works in FULL text document sync mode