0.2.1, bug fixes and new match new compiler

package.json

@@ -47,7 +47,18 @@
 					}
 				}
 			}
-		]
+		],
+		"configuration": {
+			"title": "hblang",
+			"properties": {
+				"hblang.compilerPath": {
+					"type": "string",
+					"default": "PATH",
+					"description": "Set the optional path for the hbc compiler. If set to 'PATH', it will rely on the system to provide hbc.",
+					"scope": "machine-overridable"
+				}
+			}
+		}
 	},
 	"scripts": {
 		"vscode:prepublish": "webpack",

src/main.ts

@@ -1,124 +1,120 @@
-import * as vscode from 'vscode';
+import * as vscode from "vscode";
-import { execFile } from 'child_process';
+import { execFile } from "child_process";
-import * as fs from 'fs';
+import * as fs from "fs";
-import * as path from 'path';
+import * as path from "path";
 
-vscode.languages.registerDocumentFormattingEditProvider('hblang', {
+const DEFAULT_EXECUTABLE = "hbc";
-	async provideDocumentFormattingEdits(document: vscode.TextDocument): Promise<vscode.TextEdit[]> {
+let diagnosticCollection: vscode.DiagnosticCollection;
-		const filePath = document.uri.fsPath;
-		const tempFilePath = path.join(path.dirname(filePath), `temp_${path.basename(filePath)}`);
 
-		try {
+function getExecutablePath(): string {
+  const config = vscode.workspace.getConfiguration("hblang");
+  return config.get<string>("compilerPath") === "Use PATH"
+    ? DEFAULT_EXECUTABLE
+    : config.get<string>("compilerPath")!;
+}
+
+async function runCommand(filePath: string, args: string[]): Promise<string> {
+  return new Promise((resolve, reject) => {
+    execFile(getExecutablePath(), args, (error, stdout, stderr) => {
+      if (error && error.code === "ENOENT") {
+        vscode.window.showErrorMessage(
+          "hblang compiler not found. Ensure 'hbc' is installed and available in PATH."
+        );
+        return reject(new Error(`Compiler not found: ${stderr || stdout}`));
+      }
+      return error
+        ? reject(new Error(stderr || `Exit code: ${error.code}`))
+        : resolve(stdout);
+    });
+  });
+}
+
+async function provideDocumentFormattingEdits(
+  document: vscode.TextDocument
+): Promise<vscode.TextEdit[]> {
+  const tempFilePath = path.join(
+    path.dirname(document.uri.fsPath),
+    `temp_${path.basename(document.uri.fsPath)}`
+  );
   await fs.promises.writeFile(tempFilePath, document.getText());
 
-			const stdout = await new Promise<string>((resolve, reject) => {
+  try {
-				execFile('hbc', ['--fmt-stdout', tempFilePath], (error, stdout, stderr) => {
+    const stdout = await runCommand(tempFilePath, [
-					if (error) {
+      "--fmt-stdout",
-						if (error.code === 'ENOENT') {
+      tempFilePath,
-							vscode.window.showErrorMessage("hblang compiler not found. ensure 'hbc' is installed and available in PATH.");
+    ]);
-						} else {
-							vscode.window.showErrorMessage(`error formatting document with hbc: ${stderr || `exit code: ${error.code}`}`);
-						}
-						return reject(new Error(stderr || `exit code: ${error.code}`));
-					}
-					resolve(stdout);
-				});
-			});
-
     const fullRange = new vscode.Range(
       document.positionAt(0),
       document.positionAt(document.getText().length)
     );
-			const edit = vscode.TextEdit.replace(fullRange, stdout);
-			return [edit];
 
+    diagnosticCollection.delete(document.uri);
+
+    return [vscode.TextEdit.replace(fullRange, stdout)];
   } catch (error) {
-
-			if (error instanceof Error && error.message.includes('ENOENT')) {
-				return [];
-			}
-
-
-			const message = error instanceof Error ? error.message : 'unknown error occurred.';
-			vscode.window.showErrorMessage(`error formatting document: ${message}`);
     return [];
   } finally {
-			fs.promises.unlink(tempFilePath).catch((err) => {
+    fs.promises.unlink(tempFilePath).catch(console.error);
-				console.error('error removing temp file:', err);
-			});
-		}
-	}
-});
-
-
-
-let diagnosticCollection: vscode.DiagnosticCollection;
-
-export function activate(context: vscode.ExtensionContext) {
-	diagnosticCollection = vscode.languages.createDiagnosticCollection('hblang');
-	context.subscriptions.push(diagnosticCollection);
-
-	vscode.workspace.onDidSaveTextDocument(onDocumentSaved);
-}
-
-async function onDocumentSaved(document: vscode.TextDocument) {
-	if (document.languageId === 'hblang') {
-		await lintDocument(document);
   }
 }
 
 async function lintDocument(document: vscode.TextDocument) {
-	const filePath = document.uri.fsPath;
-
   try {
-		const stderr = await runCompiler(filePath);
+    const stderr = await runCommand(document.uri.fsPath, [document.uri.fsPath]);
-		const diagnostics = parseLintingErrors(stderr);
+    diagnosticCollection.set(document.uri, parseLintingErrors(stderr));
-		diagnosticCollection.set(document.uri, diagnostics);
   } catch (error) {
     if (error instanceof Error) {
-			const diagnostics = parseLintingErrors(error.message);
+      diagnosticCollection.set(document.uri, parseLintingErrors(error.message));
-			diagnosticCollection.set(document.uri, diagnostics);
     } else {
-			vscode.window.showErrorMessage(`error linting hblang document for some reason`)
+      vscode.window.showErrorMessage("Error linting hblang document.");
     }
   }
 }
 
-async function runCompiler(filePath: string): Promise<string> {
-	return new Promise<string>((resolve, reject) => {
-		execFile('hbc', [filePath], (error, stdout, stderr) => {
-			if (error) {
-				if (error.code === 'ENOENT') {
-
-					vscode.window.showErrorMessage("hblang compiler not found. ensure 'hbc' is installed and available in PATH.");
-				}
-				reject(new Error(stderr || `Exit code: ${error.code}`));
-			} else {
-				resolve(stderr);
-			}
-		});
-	});
-}
-
 function parseLintingErrors(stderr: string): vscode.Diagnostic[] {
-	const diagnostics: vscode.Diagnostic[] = [];
+  return stderr
-	const lines = stderr.trim().split('\n');
+    .split("\n")
+    .filter((line) => line && !line.includes("missing main function"))
+    .map((lineText) => {
+      const match = lineText.match(/^([^:]+):(\d+):(\d+):\s*(.+)$/);
+      if (!match) return null;
 
-	for (const line of lines) {
+      const [, , lineStr, columnStr, message] = match;
-		const match = line.match(/^([^:]+):(\d+):(\d+):\s*(.+)$/);
+      const lineNum = parseInt(lineStr, 10) - 1;
-		if (match && !line.includes('missing main function')) {
+      const columnNum = parseInt(columnStr, 10) - 1;
-			const [, filePath, lineStr, columnStr, message] = match;
+
-			const line = parseInt(lineStr, 10) - 1;
+      return new vscode.Diagnostic(
-			const column = parseInt(columnStr, 10) - 1;
+        new vscode.Range(
-			const diagnostic = new vscode.Diagnostic(
+          lineNum,
-				new vscode.Range(line, column, line, column + message.length),
+          columnNum,
+          lineNum,
+          columnNum + message.length
+        ),
         message,
         vscode.DiagnosticSeverity.Error
       );
-			diagnostic.source = 'hbc';
+    })
-			diagnostics.push(diagnostic);
+    .filter(Boolean) as vscode.Diagnostic[];
-		}
+}
-	}
+
-
+export function activate(context: vscode.ExtensionContext) {
-	return diagnostics;
+  diagnosticCollection = vscode.languages.createDiagnosticCollection("hblang");
+  context.subscriptions.push(diagnosticCollection);
+
+  vscode.workspace.onDidSaveTextDocument(async (document) => {
+    if (document.languageId === "hblang") {
+      await lintDocument(document);
+
+      if (diagnosticCollection.get(document.uri)?.length === 0) {
+        vscode.commands.executeCommand(
+          "editor.action.formatDocument",
+          document
+        );
+      }
+    }
+  });
+
+  vscode.languages.registerDocumentFormattingEditProvider("hblang", {
+    provideDocumentFormattingEdits,
+  });
 }

tests/dont-erase.hb

@@ -0,0 +1,3 @@
+main := fn(): void {
+    undefined_identifier
+}