feat: add commands: CheckOnType, SmartCompletion

Author: mtshiba

package-lock.json

@@ -3,7 +3,7 @@
 	"displayName": "vscode-erg",
 	"description": "Erg language support for Visual Studio Code",
 	"publisher": "erg-lang",
-	"version": "0.1.11",
+	"version": "0.1.12",
 	"engines": {
 		"vscode": "^1.70.0"
 	},
@@ -54,27 +54,37 @@
 				"vscode-erg.ergpath.path": {
 					"type": "string",
 					"default": "",
-					"description": "Path to `.erg` directory"
+					"markdownDescription": "Path to `.erg` directory"
 				},
 				"vscode-erg.executablePath": {
 					"type": "string",
 					"default": "",
-					"description": "Path to `erg` executable"
+					"markdownDescription": "Path to `erg` executable"
 				},
 				"vscode-erg.lsp.inlayHints": {
 					"type": "boolean",
 					"default": true,
-					"description": "Enable inlay hints"
+					"markdownDescription": "Enable inlay hints"
 				},
 				"vscode-erg.lsp.semanticTokens": {
 					"type": "boolean",
 					"default": true,
-					"description": "Enable semantic tokens"
+					"markdownDescription": "Enable semantic tokens"
 				},
 				"vscode-erg.lsp.hover": {
 					"type": "boolean",
 					"default": true,
-					"description": "Enable hover"
+					"markdownDescription": "Enable hover"
+				},
+				"vscode-erg.lsp.smartCompletion": {
+					"type": "boolean",
+					"default": true,
+					"markdownDescription": "Enable smart completion (see [ELS features](https://github.com/erg-lang/erg/blob/main/crates/els/doc/features.md))"
+				},
+				"vscode-erg.lsp.checkOnType": {
+					"type": "boolean",
+					"default": false,
+					"markdownDescription": "Perform checking each time any character is entered. This improves the accuracy of completion, etc., but may slow down the execution of ELS"
 				}
 			}
 		}

package.json

@@ -17,9 +17,6 @@ async function startLanguageClient(context: ExtensionContext) {
 				.get<string>("executablePath", "");
 			return executablePath === "" ? "erg" : executablePath;
 		})();
-		const enableInlayHints = workspace.getConfiguration("vscode-erg").get<boolean>("lsp.inlayHints", true);
-		const enableSemanticTokens = workspace.getConfiguration("vscode-erg").get<boolean>("lsp.semanticTokens", true);
-		const enableHover = workspace.getConfiguration("vscode-erg").get<boolean>("lsp.hover", true);
 		const buildFeatures = await (async () => {
 			const buildFeaturesProcess = spawn(executablePath, ["--build-features"]);
 			let buildFeatures = "";
@@ -28,9 +25,14 @@ async function startLanguageClient(context: ExtensionContext) {
 			}
 			return buildFeatures;
 		})();
-		let serverOptions: ServerOptions;
+		const enableInlayHints = workspace.getConfiguration("vscode-erg").get<boolean>("lsp.inlayHints", true);
+		const enableSemanticTokens = workspace.getConfiguration("vscode-erg").get<boolean>("lsp.semanticTokens", true);
+		const enableHover = workspace.getConfiguration("vscode-erg").get<boolean>("lsp.hover", true);
+		const smartCompletion = workspace.getConfiguration("vscode-erg").get<boolean>("lsp.smartCompletion", true);
+		/* optional features */
+		const checkOnType = workspace.getConfiguration("vscode-erg").get<boolean>("lsp.checkOnType", false);
 		let args = ["--language-server"];
-		if (!(enableInlayHints && enableSemanticTokens && enableHover)) {
+		if (!(enableInlayHints && enableSemanticTokens && enableHover && smartCompletion) || checkOnType) {
 			args.push("--");
 		}
 		if (!enableInlayHints) {
@@ -45,6 +47,15 @@ async function startLanguageClient(context: ExtensionContext) {
 			args.push("--disable");
 			args.push("hover");
 		}
+		if (!smartCompletion) {
+			args.push("--disable");
+			args.push("smartCompletion");
+		}
+		if (checkOnType) {
+			args.push("--enable");
+			args.push("checkOnType");
+		}
+		let serverOptions: ServerOptions;
 		if (buildFeatures.includes("els")) {
 			serverOptions = {
 				command: executablePath,