Added implementation for 'textDocument/hover' message

Author: cmaglie

Diff for: handler/handler.go

@@ -147,6 +147,15 @@ func (handler *InoHandler) HandleMessageFromIDE(ctx context.Context, conn *jsonr
 		err = handler.ino2cppTextDocumentPositionParams(&p.TextDocumentPositionParams)
 		log.Printf("    --> completion(%s:%d:%d)\n", p.TextDocument.URI, p.Position.Line, p.Position.Character)
 
+	case *HoverParams:
+		// method: "textDocument/hover"
+		uri = p.TextDocument.URI
+		doc := &p.TextDocumentPositionParams
+		log.Printf("--> hover(%s:%d:%d)\n", doc.TextDocument.URI, doc.Position.Line, doc.Position.Character)
+
+		err = handler.ino2cppTextDocumentPositionParams(doc)
+		log.Printf("    --> hover(%s:%d:%d)\n", doc.TextDocument.URI, doc.Position.Line, doc.Position.Character)
+
 	case *lsp.DidChangeTextDocumentParams: // "textDocument/didChange":
 		uri = p.TextDocument.URI
 		err = handler.ino2cppDidChangeTextDocumentParams(ctx, p)
@@ -162,8 +171,6 @@ func (handler *InoHandler) HandleMessageFromIDE(ctx context.Context, conn *jsonr
 		err = handler.ino2cppCodeActionParams(p)
 	// case "textDocument/signatureHelp":
 	// 	fallthrough
-	// case "textDocument/hover":
-	// 	fallthrough
 	// case "textDocument/definition":
 	// 	fallthrough
 	// case "textDocument/typeDefinition":

Diff for: handler/protocol.go

@@ -41,7 +41,9 @@ func readParams(method string, raw *json.RawMessage) (interface{}, error) {
 	case "textDocument/signatureHelp":
 		fallthrough
 	case "textDocument/hover":
-		fallthrough
+		params := new(HoverParams)
+		err := json.Unmarshal(*raw, params)
+		return params, err
 	case "textDocument/definition":
 		fallthrough
 	case "textDocument/typeDefinition":
@@ -222,6 +224,12 @@ func (entry *commandOrCodeAction) MarshalJSON() ([]byte, error) {
 	return nil, nil
 }
 
+// HoverParams structure according to LSP
+type HoverParams struct {
+	lsp.TextDocumentPositionParams
+	// lsp.WorkDoneProgressParams
+}
+
 // Hover structure according to LSP
 type Hover struct {
 	Contents MarkupContent `json:"contents"`