fix: source map decoding

compilation/src/main/java/me/topchetoeu/j2s/compilation/CompoundNode.java

@@ -38,8 +38,10 @@ public class CompoundNode extends Node {
 		for (var i = 0; i < statements.size(); i++) {
 			var stm = statements.get(i);
 
-			if (i != statements.size() - 1) stm.compile(target, false, BreakpointType.STEP_OVER);
-			else stm.compile(target, polluted = pollute, BreakpointType.STEP_OVER);
+			if (i != statements.size() - 1) stm.compileStatement(target, false, BreakpointType.STEP_OVER);
+			else stm.compileStatement(target, polluted = pollute, BreakpointType.STEP_OVER);
+
+			target.setDebug(type);
 		}
 
 		if (!polluted && pollute) {

compilation/src/main/java/me/topchetoeu/j2s/compilation/Node.java

@@ -9,9 +9,14 @@ public abstract class Node {
 	public void resolve(CompileResult target) {}
 
 	public void compile(CompileResult target, boolean pollute, BreakpointType type) {
+		compileStatement(target, pollute, type);
+	}
+	public void compileStatement(CompileResult target, boolean pollute, BreakpointType type) {
 		int start = target.size();
 		compile(target, pollute);
-		if (target.size() != start) target.setLocationAndDebug(start, loc(), type);
+		if (target.size() != start) {
+			target.setLocationAndDebug(start, loc(), type);
+		}
 	}
 	public void compile(CompileResult target, boolean pollute) {
 		compile(target, pollute, BreakpointType.NONE);

lib/src/main/java/me/topchetoeu/j2s/lib/debug/SimpleDebugger.java

@@ -814,7 +814,6 @@ public class SimpleDebugger implements Debugger {
 		var cond = msg.params.string("condition", "").trim();
 
 		if (cond.equals("")) cond = null;
-		if (cond != null) cond  = "(" + cond + ")";
 
 		Pattern regex;
 

lib/src/transpiler/map.ts

@@ -1,10 +1,11 @@
-const map: number[] = [];
-let j = 0;
-
-for (let i = 65; i <= 90; i++) map[i] = j++;
-for (let i = 97; i <= 122; i++) map[i] = j++;
-map[43] = j++;
-map[47] = j++;
+function decodeBase64(val: number) {
+	if (val >= 65 && val <= 90) return val - 65;
+	else if (val >= 97 && val <= 122) return val - 97 + 26;
+	else if (val >= 48 && val <= 57) return val - 48 + 52;
+	else if (val == 43) return 62;
+	else if (val == 47) return 63;
+	else throw "Invalid Base64 char";
+}
 
 export function decodeVLQ(val: string): number[][][] {
 	const lines: number[][][] = [];
@@ -30,14 +31,14 @@ export function decodeVLQ(val: string): number[][][] {
 
 				for (let i = 0; i < el.length;) {
 					let sign = 1;
-					let curr = map[el.charCodeAt(i++)];
+					let curr = decodeBase64(el.charCodeAt(i++));
 					let cont = (curr & 0x20) === 0x20;
 					if ((curr & 1) === 1) sign = -1;
 					let res = (curr & 0b11110) >> 1;
 					let n = 4;
 
 					for (; i < el.length && cont;) {
-						curr = map[el.charCodeAt(i++)];
+						curr = decodeBase64(el.charCodeAt(i++));
 						cont = (curr & 0x20) == 0x20;
 						res |= (curr & 0b11111) << n;
 						n += 5;
@@ -134,7 +135,6 @@ export class VLQSourceMap {
 		let originalRow = 0;
 		let originalCol = 0;
 		let originalFile = 0;
-		const lastCols = new Set<number>();
 
 		for (let compiledRow = 0; compiledRow < mapping.length; compiledRow++) {
 			const line: [start: number, dst: Location][] = file[compiledRow] = [];
@@ -149,11 +149,8 @@ export class VLQSourceMap {
 				originalRow += rawSeg.length > 2 ? rawSeg[2] : 0;
 				originalCol += rawSeg.length > 3 ? rawSeg[3] : 0;
 
-				if (!lastCols.has(compiledCol)) {
 				line[line.length] = [compiledCol, [filenames[originalFile], originalRow, originalCol]];
 			}
-				lastCols.add(compiledCol);
-			}
 
 			line.sort((a, b) => a[0] - b[0]);
 		}

repl/src/main/java/me/topchetoeu/j2s/repl/SimpleRepl.java

@@ -7,6 +7,7 @@ import java.io.IOException;
 import java.io.InputStream;
 import java.io.OutputStream;
 import java.net.InetSocketAddress;
+import java.util.ArrayList;
 import java.util.concurrent.CancellationException;
 import java.util.concurrent.ExecutionException;
 
@@ -41,19 +42,25 @@ public class SimpleRepl {
 	static Key<InputStream> STDIN = new Key<>();
 
 	static int j = 0;
-	static String[] args;
+	static String[] files;
+	static boolean inspect = false;
+	static int inspectPort = 9229;
 
 	private static void reader() {
 		try {
+			if (inspect) {
 				server = new DebugServer();
-			debugTask = server.start(new InetSocketAddress("127.0.0.1", 9229), true);
+				debugTask = server.start(new InetSocketAddress("127.0.0.1", inspectPort), true);
 				server.targets.put("default", (socket, req) -> new SimpleDebugger(socket)
 					.attach((SimpleDebugHandler)DebugHandler.get(environment))
 				);
+				System.out.println("Debug server started at localhost:" + inspectPort);
+			}
 
 			System.out.println(String.format("Running %s v%s by %s", Metadata.name(), Metadata.version(), Metadata.author()));
 
-			for (var arg : args) {
+			if (files.length > 0) {
+				for (var arg : files) {
 					var file = new File(arg);
 					var raw = Reading.streamToString(new FileInputStream(file));
 
@@ -69,9 +76,9 @@ public class SimpleRepl {
 						catch (ExecutionException e) { throw e.getCause(); }
 					}
 					catch (EngineException | SyntaxException e) { System.err.println(Value.errorToReadable(environment, e, null)); }
-
 				}
-
+			}
+			else {
 				for (var i = 0; ; i++) {
 					var raw = Reading.readline();
 
@@ -89,7 +96,7 @@ public class SimpleRepl {
 						catch (ExecutionException e) { throw e.getCause(); }
 					}
 					catch (EngineException | SyntaxException e) { System.err.println(Value.errorToReadable(environment, e, null)); }
-
+				}
 			}
 		}
 		catch (EngineException | SyntaxException e) { System.err.println(Value.errorToReadable(environment, e, null)); }
@@ -104,11 +111,30 @@ public class SimpleRepl {
 		}
 	}
 
-	private static Environment createESEnv() {
+	private static Environment createESEnv(String compiler) {
 		var env = StdLib.apply(null);
 		env.add(EventLoop.KEY, engine);
 		env.add(DebugHandler.KEY, new SimpleDebugHandler());
+
+		switch (compiler) {
+			case "typescript":
+			case "ts":
+				env.add(Compiler.KEY, Compilers.chainTranspilers(Compilers.jsCompiler(), env, Compilers::typescriptCompiler));
+				break;
+			case "coffeescript":
+			case "cs":
+				env.add(Compiler.KEY, Compilers.chainTranspilers(Compilers.jsCompiler(), env, Compilers::babelCompiler, Compilers::coffeescriptCompiler));
+				break;
+			case "babel":
+			case "es6":
+			case "esnext":
 				env.add(Compiler.KEY, Compilers.chainTranspilers(Compilers.jsCompiler(), env, Compilers::babelCompiler));
+				break;
+			default:
+			case "js":
+				env.add(Compiler.KEY, Compilers.jsCompiler());
+				break;
+		}
 
 		var glob = Value.global(env);
 
@@ -137,10 +163,29 @@ public class SimpleRepl {
 	}
 
 	public static void main(String args[]) throws InterruptedException {
-		SimpleRepl.args = args;
+		var compiler = "js";
+		var files = new ArrayList<String>();
+
+		for (String arg : args) {
+			if (arg.startsWith("--lang=")) {
+				compiler = arg.substring(7);
+			}
+			else if (arg.equals("--inspect")) {
+				inspect = true;
+			}
+			else if (arg.startsWith("--inspect=")) {
+				inspect = true;
+				inspectPort = Integer.parseInt(arg.substring(10));
+			}
+			else {
+				files.add(arg);
+			}
+		}
+
+		SimpleRepl.files = files.toArray(new String[0]);
 		var reader = new Thread(SimpleRepl::reader);
 
-		environment = createESEnv();
+		environment = createESEnv(compiler);
 
 		initEngine();
 
@@ -150,6 +195,6 @@ public class SimpleRepl {
 
 		reader.join();
 		engineTask.interrupt();
-		debugTask.interrupt();
+		if (debugTask != null) debugTask.interrupt();
 	}
 }

runtime/src/main/java/me/topchetoeu/j2s/runtime/debug/DebugHandler.java

@@ -93,7 +93,7 @@ public interface DebugHandler {
 	}
 	public default FunctionMap getMapOrEmpty(Environment env, FunctionValue func) {
 		if (func instanceof CodeFunction codeFunc) return getMapOrEmpty(env, codeFunc.body);
-		else return null;
+		else return FunctionMap.EMPTY;
 	}
 
 	public static DebugHandler get(Environment exts) {

runtime/src/main/java/me/topchetoeu/j2s/runtime/values/objects/ArrayLikeValue.java

@@ -195,7 +195,6 @@ public abstract class ArrayLikeValue extends ObjectValue {
 				res.add("    " + line);
 			}
 		}
-		res.set(res.size() - 1, res.getLast().substring(0, res.getLast().length() - 1));
 		res.add("]");
 
 		return res;