src/assets/js/bootstrap.js

@@ -1,116 +1,114 @@
-(function (ts, env, libs) {
+(function (ts, env, libs) {
-    var src = '', version = 0;
+    var src = '', version = 0;
-    var lib = libs.concat([
+    var lib = libs.concat([
-        'declare const exit: never;',
+        'declare function exit(): never;',
-        'declare const go: any;',
+        'declare function go(): any;',
-        'declare function getTsDeclarations(): string[];'
+        'declare function getTsDeclarations(): string[];'
-    ]).join('');
+    ]).join('');
-    var libSnapshot = ts.ScriptSnapshot.fromString(lib);
+    var libSnapshot = ts.ScriptSnapshot.fromString(lib);
-    var environments = {};
+    var environments = {};
-    var declSnapshots = [];
+    var declSnapshots = [];
-
+
-    var settings = {
+    var settings = {
-        outDir: "/out",
+        outDir: "/out",
-        declarationDir: "/out",
+        declarationDir: "/out",
-        target: ts.ScriptTarget.ES5,
+        target: ts.ScriptTarget.ES5,
-        lib: [ ],
+        lib: [ ],
-        module: ts.ModuleKind.None,
+        module: ts.ModuleKind.None,
-        declaration: true,
+        declaration: true,
-        stripInternal: true,
+        stripInternal: true,
-        downlevelIteration: true,
+        downlevelIteration: true,
-        forceConsistentCasingInFileNames: true,
+        forceConsistentCasingInFileNames: true,
-        experimentalDecorators: true,
+        experimentalDecorators: true,
-        strict: true,
+        strict: true,
-        sourceMap: true,
+        sourceMap: true,
-    };
+    };
-
+
-    var reg = ts.createDocumentRegistry();
+    var reg = ts.createDocumentRegistry();
-    var service = ts.createLanguageService({
+    var service = ts.createLanguageService({
-        getCurrentDirectory: function() { return "/"; },
+        getCurrentDirectory: function() { return "/"; },
-        getDefaultLibFileName: function() { return "/lib.d.ts"; },
+        getDefaultLibFileName: function() { return "/lib.d.ts"; },
-        getScriptFileNames: function() {
+        getScriptFileNames: function() {
-            var res = [ "/src.ts", "/lib.d.ts" ];
+            var res = [ "/src.ts", "/lib.d.ts" ];
-            for (var i = 0; i < declSnapshots.length; i++) res.push("/glob." + (i + 1) + ".d.ts");
+            for (var i = 0; i < declSnapshots.length; i++) res.push("/glob." + (i + 1) + ".d.ts");
-            return res;
+            return res;
-        },
+        },
-        getCompilationSettings: function () { return settings; },
+        getCompilationSettings: function () { return settings; },
-        fileExists: function(filename) { return filename === "/lib.d.ts" || filename === "/src.ts" || filename === "/glob.d.ts"; },
+        fileExists: function(filename) { return filename === "/lib.d.ts" || filename === "/src.ts" || filename === "/glob.d.ts"; },
-
+
-        getScriptSnapshot: function(filename) {
+        getScriptSnapshot: function(filename) {
-            if (filename === "/lib.d.ts") return libSnapshot;
+            if (filename === "/lib.d.ts") return libSnapshot;
-            if (filename === "/src.ts") return ts.ScriptSnapshot.fromString(src);
+            if (filename === "/src.ts") return ts.ScriptSnapshot.fromString(src);
-
+
-            var index = /\/glob\.(\d+)\.d\.ts/g.exec(filename);
+            var index = /\/glob\.(\d+)\.d\.ts/g.exec(filename);
-            if (index && index[1] && (index = Number(index[1])) && index > 0 && index <= declSnapshots.length) {
+            if (index && index[1] && (index = Number(index[1])) && index > 0 && index <= declSnapshots.length) {
-                return declSnapshots[index - 1];
+                return declSnapshots[index - 1];
-            }
+            }
-
+
-            throw new Error("File '" + filename + "' doesn't exist.");
+            throw new Error("File '" + filename + "' doesn't exist.");
-        },
+        },
-        getScriptVersion: function (filename) {
+        getScriptVersion: function (filename) {
-            if (filename === "/lib.d.ts" || filename.startsWith("/glob.")) return 0;
+            if (filename === "/lib.d.ts" || filename.startsWith("/glob.")) return 0;
-            else return version;
+            else return version;
-        },
+        },
-    }, reg);
+    }, reg);
-
+
-    service.getEmitOutput("/lib.d.ts");
+    service.getEmitOutput("/lib.d.ts");
-    log("Loaded libraries!");
+    log("Loaded libraries!");
-
+
-    var oldCompile = env.compile;
+    var oldCompile = env.compile;
-
+
-    function compile(code, filename, env) {
+    function compile(code, filename, env) {
-        src = code;
+        src = code;
-        version++;
+        version++;
-
+
-        if (!environments[env.id]) environments[env.id] = []
+        if (!environments[env.id]) environments[env.id] = []
-        declSnapshots = environments[env.id];
+        declSnapshots = environments[env.id];
-        var emit = service.getEmitOutput("/src.ts");
+        debugger;
-
+        var emit = service.getEmitOutput("/src.ts");
-        var diagnostics = []
+
-            .concat(service.getCompilerOptionsDiagnostics())
+        var diagnostics = []
-            .concat(service.getSyntacticDiagnostics("/src.ts"))
+            .concat(service.getCompilerOptionsDiagnostics())
-            .concat(service.getSemanticDiagnostics("/src.ts"))
+            .concat(service.getSyntacticDiagnostics("/src.ts"))
-            .map(function (diagnostic) {
+            .concat(service.getSemanticDiagnostics("/src.ts"))
-                var message = ts.flattenDiagnosticMessageText(diagnostic.messageText, "\n");
+            .map(function (diagnostic) {
-                if (diagnostic.file) {
+                var message = ts.flattenDiagnosticMessageText(diagnostic.messageText, "\n");
-                    var pos = diagnostic.file.getLineAndCharacterOfPosition(diagnostic.start);
+                if (diagnostic.file) {
-                    var file = diagnostic.file.fileName.substring(1);
+                    var pos = diagnostic.file.getLineAndCharacterOfPosition(diagnostic.start);
-                    if (file === "src.ts") file = filename;
+                    var file = diagnostic.file.fileName.substring(1);
-                    return file + ":" + (pos.line + 1) + ":" + (pos.character + 1) + ": " + message;
+                    if (file === "src.ts") file = filename;
-                }
+                    return file + ":" + (pos.line + 1) + ":" + (pos.character + 1) + ": " + message;
-                else return message;
+                }
-            });
+                else return message;
-
+            });
-        if (diagnostics.length > 0) {
+
-            throw new SyntaxError(diagnostics.join("\n"));
+        if (diagnostics.length > 0) {
-        }
+            throw new SyntaxError(diagnostics.join("\n"));
-
+        }
-        var map = JSON.parse(emit.outputFiles[0].text);
+
-        var result = emit.outputFiles[1].text;
+        var map = JSON.parse(emit.outputFiles[0].text);
-        var declaration = emit.outputFiles[2].text;
+        var result = emit.outputFiles[1].text;
-
+        var declaration = emit.outputFiles[2].text;
-        var compiled = oldCompile(result, filename, env);
+
-
+        var compiled = oldCompile(result, filename, env);
-        return {
+
-            function: function () {
+        return {
-                var val = compiled.function.apply(this, arguments);
+            function: function () {
-                if (declaration !== '') declSnapshots.push(ts.ScriptSnapshot.fromString(declaration));
+                var val = compiled.function.apply(this, arguments);
-                return val;
+                if (declaration !== '') declSnapshots.push(ts.ScriptSnapshot.fromString(declaration));
-            },
+                return val;
-            mapChain: compiled.mapChain.concat(JSON.stringify({
+            },
-                file: filename,
+            breakpoints: compiled.breakpoints,
-                sources: [filename],
+            mapChain: compiled.mapChain.concat(map.mappings),
-                mappings: map.mappings,
+        };
-            }))
+    }
-        };
+
-    }
+    function apply(env) {
-
+        env.compile = compile;
-    function apply(env) {
+        env.global.getTsDeclarations = function() {
-        env.compile = compile;
+            return environments[env.id];
-        env.global.getTsDeclarations = function() {
+        }
-            return environments[env.id];
+    }
-        }
+
-    }
+    apply(env);
-
+})(arguments[0], arguments[1], arguments[2]);
-    apply(env);
-})(arguments[0], arguments[1], arguments[2]);

src/me/topchetoeu/jscript/Buffer.java

@@ -1,53 +1,53 @@
-package me.topchetoeu.jscript.filesystem;
+package me.topchetoeu.jscript;
-
+
-public class Buffer {
+public class Buffer {
-    private byte[] data;
+    private byte[] data;
-    private int length;
+    private int length;
-
+
-    public void write(int i, byte[] val) {
+    public void write(int i, byte[] val) {
-        if (i + val.length > data.length) {
+        if (i + val.length > data.length) {
-            var newCap = i + val.length + 1;
+            var newCap = i + val.length + 1;
-            if (newCap < data.length * 2) newCap = data.length * 2;
+            if (newCap < data.length * 2) newCap = data.length * 2;
-
+
-            var tmp = new byte[newCap];
+            var tmp = new byte[newCap];
-            System.arraycopy(this.data, 0, tmp, 0, length);
+            System.arraycopy(this.data, 0, tmp, 0, length);
-            this.data = tmp;
+            this.data = tmp;
-        }
+        }
-
+
-        System.arraycopy(val, 0, data, i, val.length);
+        System.arraycopy(val, 0, data, i, val.length);
-        if (i + val.length > length) length = i + val.length;
+        if (i + val.length > length) length = i + val.length;
-    }
+    }
-    public int read(int i, byte[] buff) {
+    public int read(int i, byte[] buff) {
-        int n = buff.length;
+        int n = buff.length;
-        if (i + n > length) n = length - i;
+        if (i + n > length) n = length - i;
-        System.arraycopy(data, i, buff, 0, n);
+        System.arraycopy(data, i, buff, 0, n);
-        return n;
+        return n;
-    }
+    }
-
+
-    public void append(byte b) {
+    public void append(byte b) {
-        write(length, new byte[] { b });
+        write(length, new byte[] { b });
-    }
+    }
-
+
-    public byte[] data() {
+    public byte[] data() {
-        var res = new byte[length];
+        var res = new byte[length];
-        System.arraycopy(this.data, 0, res, 0, length);
+        System.arraycopy(this.data, 0, res, 0, length);
-        return res;
+        return res;
-    }
+    }
-    public int length() {
+    public int length() {
-        return length;
+        return length;
-    }
+    }
-
+
-    public Buffer(byte[] data) {
+    public Buffer(byte[] data) {
-        this.data = new byte[data.length];
+        this.data = new byte[data.length];
-        this.length = data.length;
+        this.length = data.length;
-        System.arraycopy(data, 0, this.data, 0, data.length);
+        System.arraycopy(data, 0, this.data, 0, data.length);
-    }
+    }
-    public Buffer(int capacity) {
+    public Buffer(int capacity) {
-        this.data = new byte[capacity];
+        this.data = new byte[capacity];
-        this.length = 0;
+        this.length = 0;
-    }
+    }
-    public Buffer() {
+    public Buffer() {
-        this.data = new byte[128];
+        this.data = new byte[128];
-        this.length = 0;
+        this.length = 0;
-    }
+    }
-}
+}

src/me/topchetoeu/jscript/Location.java

@@ -71,4 +71,23 @@ public class Location implements Comparable<Location> {
         this.start = start;
         this.filename = filename;
     }
+
+    public static Location parse(String raw) {
+        int i0 = -1, i1 = -1;
+        for (var i = raw.length() - 1; i >= 0; i--) {
+            if (raw.charAt(i) == ':') {
+                if (i1 == -1) i1 = i;
+                else if (i0 == -1) {
+                    i0 = i;
+                    break;
+                }
+            }
+        }
+
+        return new Location(
+            Integer.parseInt(raw.substring(i0 + 1, i1)),
+            Integer.parseInt(raw.substring(i1 + 1)),
+            Filename.parse(raw.substring(0, i0))
+        );
+    }
 }

src/me/topchetoeu/jscript/Main.java

@@ -1,165 +1,168 @@
-package me.topchetoeu.jscript;
+package me.topchetoeu.jscript;
-
+
-import java.io.IOException;
+import java.io.IOException;
-import java.net.InetSocketAddress;
+import java.net.InetSocketAddress;
-import java.nio.file.Files;
+import java.nio.file.Files;
-import java.nio.file.Path;
+import java.nio.file.Path;
-
+
-import me.topchetoeu.jscript.engine.Context;
+import me.topchetoeu.jscript.engine.Context;
-import me.topchetoeu.jscript.engine.Engine;
+import me.topchetoeu.jscript.engine.Engine;
-import me.topchetoeu.jscript.engine.Environment;
+import me.topchetoeu.jscript.engine.Environment;
-import me.topchetoeu.jscript.engine.debug.DebugServer;
+import me.topchetoeu.jscript.engine.debug.DebugServer;
-import me.topchetoeu.jscript.engine.debug.SimpleDebugger;
+import me.topchetoeu.jscript.engine.debug.SimpleDebugger;
-import me.topchetoeu.jscript.engine.values.ArrayValue;
+import me.topchetoeu.jscript.engine.values.ArrayValue;
-import me.topchetoeu.jscript.engine.values.Values;
+import me.topchetoeu.jscript.engine.values.NativeFunction;
-import me.topchetoeu.jscript.events.Observer;
+import me.topchetoeu.jscript.engine.values.ObjectValue;
-import me.topchetoeu.jscript.exceptions.EngineException;
+import me.topchetoeu.jscript.engine.values.Values;
-import me.topchetoeu.jscript.exceptions.InterruptException;
+import me.topchetoeu.jscript.events.Observer;
-import me.topchetoeu.jscript.exceptions.SyntaxException;
+import me.topchetoeu.jscript.exceptions.EngineException;
-import me.topchetoeu.jscript.filesystem.MemoryFilesystem;
+import me.topchetoeu.jscript.exceptions.InterruptException;
-import me.topchetoeu.jscript.filesystem.Mode;
+import me.topchetoeu.jscript.exceptions.SyntaxException;
-import me.topchetoeu.jscript.filesystem.PhysicalFilesystem;
+import me.topchetoeu.jscript.filesystem.MemoryFilesystem;
-import me.topchetoeu.jscript.lib.Internals;
+import me.topchetoeu.jscript.filesystem.Mode;
-
+import me.topchetoeu.jscript.filesystem.PhysicalFilesystem;
-public class Main {   
+import me.topchetoeu.jscript.lib.Internals;
-    public static class Printer implements Observer<Object> {
+
-        public void next(Object data) {
+public class Main {   
-            Values.printValue(null, data);
+    public static class Printer implements Observer<Object> {
-            System.out.println();
+        public void next(Object data) {
-        }
+            Values.printValue(null, data);
-
+            System.out.println();
-        public void error(RuntimeException err) {
+        }
-            Values.printError(err, null);
+
-        }
+        public void error(RuntimeException err) {
-
+            Values.printError(err, null);
-        public void finish() {
+        }
-            engineTask.interrupt();
+
-        }
+        public void finish() {
-    }
+            engineTask.interrupt();
-
+        }
-    static Thread engineTask, debugTask;
+    }
-    static Engine engine = new Engine(true);
+
-    static DebugServer debugServer = new DebugServer();
+    static Thread engineTask, debugTask;
-    static Environment environment = new Environment(null, null, null);
+    static Engine engine = new Engine(true);
-
+    static DebugServer debugServer = new DebugServer();
-    static int j = 0;
+    static Environment environment = new Environment(null, null, null);
-    static boolean exited = false;
+
-    static String[] args;
+    static int j = 0;
-
+    static boolean exited = false;
-    private static void reader() {
+    static String[] args;
-        try {
+
-            for (var arg : args) {
+    private static void reader() {
-                try {
+        try {
-                    if (arg.equals("--ts")) initTypescript();
+            for (var arg : args) {
-                    else {
+                try {
-                        var file = Path.of(arg);
+                    if (arg.equals("--ts")) initTypescript();
-                        var raw = Files.readString(file);
+                    else {
-                        var res = engine.pushMsg(
+                        var file = Path.of(arg);
-                            false, new Context(engine, environment),
+                        var raw = Files.readString(file);
-                            Filename.fromFile(file.toFile()),
+                        var res = engine.pushMsg(
-                            raw, null
+                            false, new Context(engine, environment),
-                        ).await();
+                            Filename.fromFile(file.toFile()),
-                        Values.printValue(null, res);
+                            raw, null
-                        System.out.println();
+                        ).await();
-                    }
+                        Values.printValue(null, res);
-                }
+                        System.out.println();
-                catch (EngineException e) { Values.printError(e, null); }
+                    }
-            }
+                }
-            for (var i = 0; ; i++) {
+                catch (EngineException e) { Values.printError(e, null); }
-                try {
+            }
-                    var raw = Reading.read();
+            for (var i = 0; ; i++) {
-
+                try {
-                    if (raw == null) break;
+                    var raw = Reading.read();
-                    var res = engine.pushMsg(
+
-                        false, new Context(engine, environment),
+                    if (raw == null) break;
-                        new Filename("jscript", "repl/" + i + ".js"),
+                    var res = engine.pushMsg(
-                        raw, null
+                        false, new Context(engine, environment),
-                    ).await();
+                        new Filename("jscript", "repl/" + i + ".js"),
-                    Values.printValue(null, res);
+                        raw, null
-                    System.out.println();
+                    ).await();
-                }
+                    Values.printValue(null, res);
-                catch (EngineException e) { Values.printError(e, null); }
+                    System.out.println();
-                catch (SyntaxException e) { Values.printError(e, null); }
+                }
-            }
+                catch (EngineException e) { Values.printError(e, null); }
-        }
+                catch (SyntaxException e) { Values.printError(e, null); }
-        catch (IOException e) {
+            }
-            System.out.println(e.toString());
+        }
-            exited = true;
+        catch (IOException e) {
-        }
+            System.out.println(e.toString());
-        catch (RuntimeException ex) {
+            exited = true;
-            if (!exited) {
+        }
-                System.out.println("Internal error ocurred:");
+        catch (RuntimeException ex) {
-                ex.printStackTrace();
+            if (!exited) {
-            }
+                System.out.println("Internal error ocurred:");
-        }
+                ex.printStackTrace();
-        if (exited) {
+            }
-            debugTask.interrupt();
+        }
-            engineTask.interrupt();
+        if (exited) {
-        }
+            debugTask.interrupt();
-    }
+            engineTask.interrupt();
-
+        }
-    private static void initEnv() {
+    }
-        environment = Internals.apply(environment);
+
-
+    private static void initEnv() {
-        environment.global.define("exit", _ctx -> {
+        environment = Internals.apply(environment);
-            exited = true;
+
-            throw new InterruptException();
+        environment.global.define(false, new NativeFunction("exit", (_ctx, th, args) -> {
-        });
+            exited = true;
-        environment.global.define("go", _ctx -> {
+            throw new InterruptException();
-            try {
+        }));
-                var f = Path.of("do.js");
+        environment.global.define(false, new NativeFunction("go", (_ctx, th, args) -> {
-                var func = _ctx.compile(new Filename("do", "do/" + j++ + ".js"), new String(Files.readAllBytes(f)));
+            try {
-                return func.call(_ctx);
+                var f = Path.of("do.js");
-            }
+                var func = _ctx.compile(new Filename("do", "do/" + j++ + ".js"), new String(Files.readAllBytes(f)));
-            catch (IOException e) {
+                return func.call(_ctx);
-                throw new EngineException("Couldn't open do.js");
+            }
-            }
+            catch (IOException e) {
-        });
+                throw new EngineException("Couldn't open do.js");
-
+            }
-        environment.filesystem.protocols.put("temp", new MemoryFilesystem(Mode.READ_WRITE));
+        }));
-        environment.filesystem.protocols.put("file", new PhysicalFilesystem(Path.of(".").toAbsolutePath()));
+
-    }
+        environment.filesystem.protocols.put("temp", new MemoryFilesystem(Mode.READ_WRITE));
-    private static void initEngine() {
+        environment.filesystem.protocols.put("file", new PhysicalFilesystem(Path.of(".").toAbsolutePath()));
-        debugServer.targets.put("target", (ws, req) -> new SimpleDebugger(ws, engine));
+    }
-        engineTask = engine.start();
+    private static void initEngine() {
-        debugTask = debugServer.start(new InetSocketAddress("127.0.0.1", 9229), true);
+        debugServer.targets.put("target", (ws, req) -> new SimpleDebugger(ws, engine));
-    }
+        engineTask = engine.start();
-    private static void initTypescript() {
+        debugTask = debugServer.start(new InetSocketAddress("127.0.0.1", 9229), true);
-        try {
+    }
-            var tsEnv = Internals.apply(new Environment(null, null, null));
+    private static void initTypescript() {
-            var bsEnv = Internals.apply(new Environment(null, null, null));
+        try {
-
+            var tsEnv = Internals.apply(new Environment(null, null, null));
-            engine.pushMsg(
+            tsEnv.global.define(null, "module", false, new ObjectValue());
-                false, new Context(engine, tsEnv),
+            var bsEnv = Internals.apply(new Environment(null, null, null));
-                new Filename("jscript", "ts.js"),
+
-                Reading.resourceToString("js/ts.js"), null
+            engine.pushMsg(
-            ).await();
+                false, new Context(engine, tsEnv),
-            System.out.println("Loaded typescript!");
+                new Filename("jscript", "ts.js"),
-
+                Reading.resourceToString("js/ts.js"), null
-            var ctx = new Context(engine, bsEnv);
+            ).await();
-
+            System.out.println("Loaded typescript!");
-            engine.pushMsg(
+
-                false, ctx,
+            var ctx = new Context(engine, bsEnv);
-                new Filename("jscript", "internals/bootstrap.js"), Reading.resourceToString("js/bootstrap.js"), null,
+
-                tsEnv.global.get(ctx, "ts"), environment, new ArrayValue(null, Reading.resourceToString("js/lib.d.ts"))
+            engine.pushMsg(
-            ).await();
+                false, ctx,
-        }
+                new Filename("jscript", "bootstrap.js"), Reading.resourceToString("js/bootstrap.js"), null,
-        catch (EngineException e) {
+                tsEnv.global.get(ctx, "ts"), environment, new ArrayValue(null, Reading.resourceToString("js/lib.d.ts"))
-            Values.printError(e, "(while initializing TS)");
+            ).await();
-        }
+        }
-    }
+        catch (EngineException e) {
-
+            Values.printError(e, "(while initializing TS)");
-    public static void main(String args[]) {
+        }
-        System.out.println(String.format("Running %s v%s by %s", Metadata.name(), Metadata.version(), Metadata.author()));
+    }
-
+
-        Main.args = args;
+    public static void main(String args[]) {
-        var reader = new Thread(Main::reader);
+        System.out.println(String.format("Running %s v%s by %s", Metadata.name(), Metadata.version(), Metadata.author()));
-
+
-        initEnv();
+        Main.args = args;
-        initEngine();
+        var reader = new Thread(Main::reader);
-
+
-        reader.setDaemon(true);
+        initEnv();
-        reader.setName("STD Reader");
+        initEngine();
-        reader.start();
+
-    }
+        reader.setDaemon(true);
-}
+        reader.setName("STD Reader");
+        reader.start();
+    }
+}

src/me/topchetoeu/jscript/compilation/CalculateResult.java

@@ -0,0 +1,21 @@
+package me.topchetoeu.jscript.compilation;
+
+import me.topchetoeu.jscript.engine.values.Values;
+
+public final class CalculateResult {
+    public final boolean exists;
+    public final Object value;
+
+    public final boolean isTruthy() {
+        return exists && Values.toBoolean(value);
+    }
+
+    public CalculateResult(Object value) {
+        this.exists = true;
+        this.value = value;
+    }
+    public CalculateResult() {
+        this.exists = false;
+        this.value = null;
+    }
+}

src/me/topchetoeu/jscript/compilation/CompileTarget.java

@@ -1,42 +1,72 @@
-package me.topchetoeu.jscript.compilation;
+package me.topchetoeu.jscript.compilation;
-
+
-import java.util.Map;
+import java.util.HashMap;
-import java.util.TreeSet;
+import java.util.Map;
-import java.util.Vector;
+import java.util.TreeSet;
-
+import java.util.Vector;
-import me.topchetoeu.jscript.Location;
+
-
+import me.topchetoeu.jscript.Location;
-public class CompileTarget {
+import me.topchetoeu.jscript.compilation.Instruction.BreakpointType;
-    public final Vector<Instruction> target = new Vector<>();
+import me.topchetoeu.jscript.engine.Environment;
-    public final Map<Long, FunctionBody> functions;
+import me.topchetoeu.jscript.engine.values.CodeFunction;
-    public final TreeSet<Location> breakpoints;
+
-
+public class CompileTarget {
-    public Instruction add(Instruction instr) {
+    public final Vector<Instruction> target = new Vector<>();
-        target.add(instr);
+    public final Map<Long, FunctionBody> functions;
-        return instr;
+    public final TreeSet<Location> breakpoints;
-    }
+    private final HashMap<Location, Instruction> bpToInstr = new HashMap<>();
-    public Instruction set(int i, Instruction instr) {
+    private BreakpointType queueType = BreakpointType.NONE;
-        return target.set(i, instr);
+    private Location queueLoc = null;
-    }
+
-    public void setDebug(int i) {
+    public Instruction add(Instruction instr) {
-        breakpoints.add(target.get(i).location);
+        target.add(instr);
-    }
+        if (queueType != BreakpointType.NONE) setDebug(queueType);
-    public void setDebug() {
+        if (queueLoc != null) instr.locate(queueLoc);
-        setDebug(target.size() - 1);
+        queueType = BreakpointType.NONE;
-    }
+        queueLoc = null;
-    public Instruction get(int i) {
+        return instr;
-        return target.get(i);
+    }
-    }
+    public Instruction set(int i, Instruction instr) {
-    public int size() { return target.size(); }
+        return target.set(i, instr);
-    public Location lastLoc(Location fallback) {
+    }
-        if (target.size() == 0) return fallback;
+    public void setDebug(int i, BreakpointType type) {
-        else return target.get(target.size() - 1).location;
+        var instr = target.get(i);
-    }
+        instr.breakpoint = type;
-
+        breakpoints.add(target.get(i).location);
-    public Instruction[] array() { return target.toArray(Instruction[]::new); }
+
-
+        var old = bpToInstr.put(instr.location, instr);
-    public CompileTarget(Map<Long, FunctionBody> functions, TreeSet<Location> breakpoints) {
+        if (old != null) old.breakpoint = BreakpointType.NONE;
-        this.functions = functions;
+    }
-        this.breakpoints = breakpoints;
+    public void setDebug(BreakpointType type) {
-    }
+        setDebug(target.size() - 1, type);
-}
+    }
+    public Instruction get(int i) {
+        return target.get(i);
+    }
+    public int size() { return target.size(); }
+    public Location lastLoc(Location fallback) {
+        if (target.size() == 0) return fallback;
+        else return target.get(target.size() - 1).location;
+    }
+
+    public void queueDebug(BreakpointType type) {
+        queueType = type;
+    }
+    public void queueDebug(BreakpointType type, Location loc) {
+        queueType = type;
+    }
+
+    public Instruction[] array() { return target.toArray(Instruction[]::new); }
+
+    public FunctionBody body() {
+        return functions.get(0l);
+    }
+    public CodeFunction func(Environment env) {
+        return new CodeFunction(env, "", body());
+    }
+
+    public CompileTarget(Map<Long, FunctionBody> functions, TreeSet<Location> breakpoints) {
+        this.functions = functions;
+        this.breakpoints = breakpoints;
+    }
+}

src/me/topchetoeu/jscript/compilation/CompoundStatement.java

@@ -1,63 +1,53 @@
 package me.topchetoeu.jscript.compilation;
 
-import java.util.Vector;
-
 import me.topchetoeu.jscript.Location;
-import me.topchetoeu.jscript.compilation.control.ContinueStatement;
+import me.topchetoeu.jscript.compilation.Instruction.BreakpointType;
-import me.topchetoeu.jscript.compilation.control.ReturnStatement;
-import me.topchetoeu.jscript.compilation.control.ThrowStatement;
 import me.topchetoeu.jscript.compilation.values.FunctionStatement;
 import me.topchetoeu.jscript.engine.scope.ScopeRecord;
 
 public class CompoundStatement extends Statement {
     public final Statement[] statements;
+    public final boolean separateFuncs;
     public Location end;
 
-    @Override
+    @Override public boolean pure() {
-    public void declare(ScopeRecord varsScope) {
         for (var stm : statements) {
-            stm.declare(varsScope);
+            if (!stm.pure()) return false;
         }
+
+        return true;
     }
 
     @Override
-    public void compile(CompileTarget target, ScopeRecord scope, boolean pollute) {
+    public void declare(ScopeRecord varsScope) {
-        for (var stm : statements) {
+        for (var stm : statements) stm.declare(varsScope);
-            if (stm instanceof FunctionStatement) stm.compile(target, scope, false);
+    }
+
+    @Override
+    public void compileWithDebug(CompileTarget target, ScopeRecord scope, boolean pollute, BreakpointType type) {
+        if (separateFuncs) for (var stm : statements) {
+            if (stm instanceof FunctionStatement && ((FunctionStatement)stm).statement) {
+                stm.compile(target, scope, false);
+            }
         }
 
+        var polluted = false;
+
         for (var i = 0; i < statements.length; i++) {
             var stm = statements[i];
 
-            if (stm instanceof FunctionStatement) continue;
+            if (separateFuncs && stm instanceof FunctionStatement) continue;
-            if (i != statements.length - 1) stm.compileWithDebug(target, scope, false);
+            if (i != statements.length - 1) stm.compileWithDebug(target, scope, false, BreakpointType.STEP_OVER);
-            else stm.compileWithDebug(target, scope, pollute);
+            else stm.compileWithDebug(target, scope, polluted = pollute, BreakpointType.STEP_OVER);
         }
 
-        if (end != null) {
+        if (!polluted && pollute) {
-            target.add(Instruction.nop(end));
+            target.add(Instruction.loadValue(loc(), null));
-            target.setDebug();
         }
     }
-
     @Override
-    public Statement optimize() {
+    public void compile(CompileTarget target, ScopeRecord scope, boolean pollute) {
-        var res = new Vector<Statement>(statements.length);
+        compileWithDebug(target, scope, pollute, BreakpointType.STEP_IN);
-
-        for (var i = 0; i < statements.length; i++) {
-            var stm = statements[i].optimize();
-            if (i < statements.length - 1 && stm.pure()) continue;
-            res.add(stm);
-            if (
-                stm instanceof ContinueStatement ||
-                stm instanceof ReturnStatement ||
-                stm instanceof ThrowStatement ||
-                stm instanceof ContinueStatement
-            ) break;
-        }
-
-        if (res.size() == 1) return res.get(0);
-        else return new CompoundStatement(loc(), res.toArray(Statement[]::new));
     }
 
     public CompoundStatement setEnd(Location loc) {
@@ -65,8 +55,9 @@ public class CompoundStatement extends Statement {
         return this;
     }
 
-    public CompoundStatement(Location loc, Statement ...statements) {
+    public CompoundStatement(Location loc, boolean separateFuncs, Statement ...statements) {
         super(loc);
+        this.separateFuncs = separateFuncs;
         this.statements = statements;
     }
 }

src/me/topchetoeu/jscript/compilation/DiscardStatement.java

@@ -1,27 +0,0 @@
-package me.topchetoeu.jscript.compilation;
-
-import me.topchetoeu.jscript.Location;
-import me.topchetoeu.jscript.compilation.values.ConstantStatement;
-import me.topchetoeu.jscript.engine.scope.ScopeRecord;
-
-public class DiscardStatement extends Statement {
-    public final Statement value;
-
-    @Override
-    public void compile(CompileTarget target, ScopeRecord scope, boolean pollute) {
-        value.compile(target, scope, false);
-        
-    }
-    @Override
-    public Statement optimize() {
-        if (value == null) return this;
-        var val = value.optimize();
-        if (val.pure()) return new ConstantStatement(loc(), null);
-        else return new DiscardStatement(loc(), val);
-    }
-
-    public DiscardStatement(Location loc, Statement val) {
-        super(loc);
-        this.value = val;
-    }
-}

src/me/topchetoeu/jscript/compilation/Instruction.java

@@ -10,7 +10,8 @@ public class Instruction {
         THROW,
         THROW_SYNTAX,
         DELETE,
-        TRY,
+        TRY_START,
+        TRY_END,
         NOP,
 
         CALL,
@@ -86,10 +87,29 @@ public class Instruction {
         //     this(false);
         // }
     }
+    public static enum BreakpointType {
+        NONE,
+        STEP_OVER,
+        STEP_IN;
+
+        public boolean shouldStepIn() {
+            return this != NONE;
+        }
+        public boolean shouldStepOver() {
+            return this == STEP_OVER;
+        }
+    }
 
     public final Type type;
     public final Object[] params;
     public Location location;
+    public BreakpointType breakpoint = BreakpointType.NONE;
+
+    public Instruction setDbgData(Instruction other) {
+        this.location = other.location;
+        this.breakpoint = other.breakpoint;
+        return this;
+    }
 
     public Instruction locate(Location loc) {
         this.location = loc;
@@ -129,8 +149,11 @@ public class Instruction {
         this.params = params;
     }
 
-    public static Instruction tryInstr(Location loc, int n, int catchN, int finallyN) {
+    public static Instruction tryStart(Location loc, int catchStart, int finallyStart, int end) {
-        return new Instruction(loc, Type.TRY, n, catchN, finallyN);
+        return new Instruction(loc, Type.TRY_START, catchStart, finallyStart, end);
+    }
+    public static Instruction tryEnd(Location loc) {
+        return new Instruction(loc, Type.TRY_END);
     }
     public static Instruction throwInstr(Location loc) {
         return new Instruction(loc, Type.THROW);

src/me/topchetoeu/jscript/compilation/Statement.java

@@ -1,6 +1,7 @@
 package me.topchetoeu.jscript.compilation;
 
 import me.topchetoeu.jscript.Location;
+import me.topchetoeu.jscript.compilation.Instruction.BreakpointType;
 import me.topchetoeu.jscript.engine.scope.ScopeRecord;
 
 public abstract class Statement {
@@ -9,12 +10,15 @@ public abstract class Statement {
     public boolean pure() { return false; }
     public abstract void compile(CompileTarget target, ScopeRecord scope, boolean pollute);
     public void declare(ScopeRecord varsScope) { }
-    public Statement optimize() { return this; }
 
-    public void compileWithDebug(CompileTarget target, ScopeRecord scope, boolean pollute) {
+    public void compileWithDebug(CompileTarget target, ScopeRecord scope, boolean pollute, BreakpointType type) {
         int start = target.size();
         compile(target, scope, pollute);
-        if (target.size() != start) target.setDebug(start);
+
+        if (target.size() != start) {
+            target.get(start).locate(loc());
+            target.setDebug(start, type);
+        }
     }
 
     public Location loc() { return _loc; }

src/me/topchetoeu/jscript/compilation/ThrowSyntaxStatement.java

@@ -0,0 +1,18 @@
+package me.topchetoeu.jscript.compilation;
+
+import me.topchetoeu.jscript.engine.scope.ScopeRecord;
+import me.topchetoeu.jscript.exceptions.SyntaxException;
+
+public class ThrowSyntaxStatement extends Statement {
+    public final String name;
+
+    @Override
+    public void compile(CompileTarget target, ScopeRecord scope, boolean pollute) {
+        target.add(Instruction.throwSyntax(loc(), name));
+    }
+
+    public ThrowSyntaxStatement(SyntaxException e) {
+        super(e.loc);
+        this.name = e.msg;
+    }
+}

src/me/topchetoeu/jscript/compilation/VariableDeclareStatement.java

@@ -3,6 +3,7 @@ package me.topchetoeu.jscript.compilation;
 import java.util.List;
 
 import me.topchetoeu.jscript.Location;
+import me.topchetoeu.jscript.compilation.Instruction.BreakpointType;
 import me.topchetoeu.jscript.compilation.values.FunctionStatement;
 import me.topchetoeu.jscript.engine.scope.ScopeRecord;
 
@@ -32,16 +33,13 @@ public class VariableDeclareStatement extends Statement {
         for (var entry : values) {
             if (entry.name == null) continue;
             var key = scope.getKey(entry.name);
-            int start = target.size();
 
             if (key instanceof String) target.add(Instruction.makeVar(entry.location, (String)key));
 
-            if (entry.value != null) {
+            target.queueDebug(BreakpointType.STEP_OVER, entry.location);
-                FunctionStatement.compileWithName(entry.value, target, scope, true, entry.name);
+            if (entry.value != null) FunctionStatement.compileWithName(entry.value, target, scope, true, entry.name);
-                target.add(Instruction.storeVar(entry.location, key));
+            else target.add(Instruction.loadValue(entry.location, null));
-            }
+            target.add(Instruction.storeVar(entry.location, key));
-
-            if (target.size() != start) target.setDebug(start);
         }
 
         if (pollute) target.add(Instruction.loadValue(loc(), null));

src/me/topchetoeu/jscript/compilation/control/DoWhileStatement.java

@@ -2,12 +2,10 @@ package me.topchetoeu.jscript.compilation.control;
 
 import me.topchetoeu.jscript.Location;
 import me.topchetoeu.jscript.compilation.CompileTarget;
-import me.topchetoeu.jscript.compilation.CompoundStatement;
 import me.topchetoeu.jscript.compilation.Instruction;
 import me.topchetoeu.jscript.compilation.Statement;
-import me.topchetoeu.jscript.compilation.values.ConstantStatement;
+import me.topchetoeu.jscript.compilation.Instruction.BreakpointType;
 import me.topchetoeu.jscript.engine.scope.ScopeRecord;
-import me.topchetoeu.jscript.engine.values.Values;
 
 public class DoWhileStatement extends Statement {
     public final Statement condition, body;
@@ -20,56 +18,16 @@ public class DoWhileStatement extends Statement {
 
     @Override
     public void compile(CompileTarget target, ScopeRecord scope, boolean pollute) {
-        if (condition instanceof ConstantStatement) {
-            int start = target.size();
-            body.compile(target, scope, false);
-            int end = target.size();
-            if (Values.toBoolean(((ConstantStatement)condition).value)) {
-                WhileStatement.replaceBreaks(target, label, start, end, end + 1, end + 1);
-            }
-            else {
-                target.add(Instruction.jmp(loc(), start - end));
-                WhileStatement.replaceBreaks(target, label, start, end, start, end + 1);
-            }
-            if (pollute) target.add(Instruction.loadValue(loc(), null));
-            return;
-        }
-
         int start = target.size();
-        body.compileWithDebug(target, scope, false);
+        body.compileWithDebug(target, scope, false, BreakpointType.STEP_OVER);
         int mid = target.size();
-        condition.compile(target, scope, true);
+        condition.compileWithDebug(target, scope, true, BreakpointType.STEP_OVER);
         int end = target.size();
 
         WhileStatement.replaceBreaks(target, label, start, mid - 1, mid, end + 1);
         target.add(Instruction.jmpIf(loc(), start - end));
     }
 
-    @Override
-    public Statement optimize() {
-        var cond = condition.optimize();
-        var b = body.optimize();
-
-        if (b instanceof CompoundStatement) {
-            var comp = (CompoundStatement)b;
-            if (comp.statements.length > 0) {
-                var last = comp.statements[comp.statements.length - 1];
-                if (last instanceof ContinueStatement) comp.statements[comp.statements.length - 1] = new CompoundStatement(loc());
-                if (last instanceof BreakStatement) {
-                    comp.statements[comp.statements.length - 1] = new CompoundStatement(loc());
-                    return new CompoundStatement(loc());
-                }
-            }
-        }
-        else if (b instanceof ContinueStatement) {
-            b = new CompoundStatement(loc());
-        }
-        else if (b instanceof BreakStatement) return new CompoundStatement(loc());
-
-        if (b.pure()) return new DoWhileStatement(loc(), label, cond, new CompoundStatement(loc()));
-        else return new DoWhileStatement(loc(), label, cond, b);
-    }
-
     public DoWhileStatement(Location loc, String label, Statement condition, Statement body) {
         super(loc);
         this.label = label;

src/me/topchetoeu/jscript/compilation/control/ForInStatement.java

@@ -4,6 +4,7 @@ import me.topchetoeu.jscript.Location;
 import me.topchetoeu.jscript.compilation.CompileTarget;
 import me.topchetoeu.jscript.compilation.Instruction;
 import me.topchetoeu.jscript.compilation.Statement;
+import me.topchetoeu.jscript.compilation.Instruction.BreakpointType;
 import me.topchetoeu.jscript.engine.Operation;
 import me.topchetoeu.jscript.engine.scope.ScopeRecord;
 
@@ -32,7 +33,7 @@ public class ForInStatement extends Statement {
             target.add(Instruction.storeVar(loc(), scope.getKey(varName)));
         }
 
-        object.compileWithDebug(target, scope, true);
+        object.compileWithDebug(target, scope, true, BreakpointType.STEP_OVER);
         target.add(Instruction.keys(loc(), true));
 
         int start = target.size();
@@ -43,10 +44,11 @@ public class ForInStatement extends Statement {
         target.add(Instruction.nop(loc()));
 
         target.add(Instruction.loadMember(varLocation, "value"));
+        target.queueDebug(BreakpointType.STEP_OVER, object.loc());
         target.add(Instruction.storeVar(varLocation, key));
-        target.setDebug();
 
-        body.compileWithDebug(target, scope, false);
+        target.queueDebug(BreakpointType.STEP_OVER, body.loc());
+        body.compile(target, scope, false);
 
         int end = target.size();
 
@@ -57,7 +59,6 @@ public class ForInStatement extends Statement {
         target.set(mid, Instruction.jmpIf(loc(), end - mid + 1));
         if (pollute) target.add(Instruction.loadValue(loc(), null));
         target.get(first).locate(loc());
-        target.setDebug(first);
     }
 
     public ForInStatement(Location loc, Location varLocation, String label, boolean isDecl, String varName, Statement varValue, Statement object, Statement body) {

src/me/topchetoeu/jscript/compilation/control/ForStatement.java

@@ -2,12 +2,10 @@ package me.topchetoeu.jscript.compilation.control;
 
 import me.topchetoeu.jscript.Location;
 import me.topchetoeu.jscript.compilation.Statement;
+import me.topchetoeu.jscript.compilation.Instruction.BreakpointType;
 import me.topchetoeu.jscript.compilation.CompileTarget;
-import me.topchetoeu.jscript.compilation.CompoundStatement;
 import me.topchetoeu.jscript.compilation.Instruction;
-import me.topchetoeu.jscript.compilation.values.ConstantStatement;
 import me.topchetoeu.jscript.engine.scope.ScopeRecord;
-import me.topchetoeu.jscript.engine.values.Values;
 
 public class ForStatement extends Statement {
     public final Statement declaration, assignment, condition, body;
@@ -20,29 +18,15 @@ public class ForStatement extends Statement {
     }
     @Override
     public void compile(CompileTarget target, ScopeRecord scope, boolean pollute) {
-        declaration.compile(target, scope, false);
+        declaration.compileWithDebug(target, scope, false, BreakpointType.STEP_OVER);
-
-        if (condition instanceof ConstantStatement) {
-            if (Values.toBoolean(((ConstantStatement)condition).value)) {
-                int start = target.size();
-                body.compile(target, scope, false);
-                int mid = target.size();
-                assignment.compileWithDebug(target, scope, false);
-                int end = target.size();
-                WhileStatement.replaceBreaks(target, label, start, mid, mid, end + 1);
-                target.add(Instruction.jmp(loc(), start - target.size()));
-                if (pollute) target.add(Instruction.loadValue(loc(), null));
-            }
-            return;
-        }
 
         int start = target.size();
-        condition.compile(target, scope, true);
+        condition.compileWithDebug(target, scope, true, BreakpointType.STEP_OVER);
         int mid = target.size();
         target.add(Instruction.nop(null));
-        body.compile(target, scope, false);
+        body.compileWithDebug(target, scope, false, BreakpointType.STEP_OVER);
         int beforeAssign = target.size();
-        assignment.compileWithDebug(target, scope, false);
+        assignment.compileWithDebug(target, scope, false, BreakpointType.STEP_OVER);
         int end = target.size();
 
         WhileStatement.replaceBreaks(target, label, mid + 1, end, beforeAssign, end + 1);
@@ -51,28 +35,6 @@ public class ForStatement extends Statement {
         target.set(mid, Instruction.jmpIfNot(loc(), end - mid + 1));
         if (pollute) target.add(Instruction.loadValue(loc(), null));
     }
-    @Override
-    public Statement optimize() {
-        var decl = declaration.optimize();
-        var asgn = assignment.optimize();
-        var cond = condition.optimize();
-        var b = body.optimize();
-
-        if (asgn.pure()) {
-            if (decl.pure()) return new WhileStatement(loc(), label, cond, b).optimize();
-            else return new CompoundStatement(loc(),
-                decl, new WhileStatement(loc(), label, cond, b)
-            ).optimize();
-        }
-
-        else if (b instanceof ContinueStatement) return new CompoundStatement(loc(),
-            decl, new WhileStatement(loc(), label, cond, new CompoundStatement(loc(), b, asgn))
-        );
-        else if (b instanceof BreakStatement) return decl;
-
-        if (b.pure()) return new ForStatement(loc(), label, decl, cond, asgn, new CompoundStatement(null));
-        else return new ForStatement(loc(), label, decl, cond, asgn, b);
-    }
 
     public ForStatement(Location loc, String label, Statement declaration, Statement condition, Statement assignment, Statement body) {
         super(loc);
@@ -82,14 +44,4 @@ public class ForStatement extends Statement {
         this.assignment = assignment;
         this.body = body;
     }
-
-    public static CompoundStatement ofFor(Location loc, String label, Statement declaration, Statement condition, Statement increment, Statement body) {
-        return new CompoundStatement(loc,
-            declaration,
-            new WhileStatement(loc, label, condition, new CompoundStatement(loc,
-                body,
-                increment
-            ))
-        );
-    }
 }

src/me/topchetoeu/jscript/compilation/control/IfStatement.java

@@ -2,13 +2,10 @@ package me.topchetoeu.jscript.compilation.control;
 
 import me.topchetoeu.jscript.Location;
 import me.topchetoeu.jscript.compilation.CompileTarget;
-import me.topchetoeu.jscript.compilation.CompoundStatement;
-import me.topchetoeu.jscript.compilation.DiscardStatement;
 import me.topchetoeu.jscript.compilation.Instruction;
 import me.topchetoeu.jscript.compilation.Statement;
-import me.topchetoeu.jscript.compilation.values.ConstantStatement;
+import me.topchetoeu.jscript.compilation.Instruction.BreakpointType;
 import me.topchetoeu.jscript.engine.scope.ScopeRecord;
-import me.topchetoeu.jscript.engine.values.Values;
 
 public class IfStatement extends Statement {
     public final Statement condition, body, elseBody;
@@ -20,52 +17,32 @@ public class IfStatement extends Statement {
     }
 
     @Override
-    public void compile(CompileTarget target, ScopeRecord scope, boolean pollute) {
+    public void compileWithDebug(CompileTarget target, ScopeRecord scope, boolean pollute, BreakpointType breakpoint) {
-        if (condition instanceof ConstantStatement) {
+        condition.compileWithDebug(target, scope, true, breakpoint);
-            if (Values.not(((ConstantStatement)condition).value)) {
-                if (elseBody != null) elseBody.compileWithDebug(target, scope, pollute);
-            }
-            else {
-                body.compileWithDebug(target, scope, pollute);
-            }
-
-            return;
-        }
-
-        condition.compile(target, scope, true);
 
         if (elseBody == null) {
             int i = target.size();
             target.add(Instruction.nop(null));
-            body.compileWithDebug(target, scope, pollute);
+            body.compileWithDebug(target, scope, pollute, breakpoint);
             int endI = target.size();
             target.set(i, Instruction.jmpIfNot(loc(), endI - i));
         }
         else {
             int start = target.size();
             target.add(Instruction.nop(null));
-            body.compileWithDebug(target, scope, pollute);
+            body.compileWithDebug(target, scope, pollute, breakpoint);
             target.add(Instruction.nop(null));
             int mid = target.size();
-            elseBody.compileWithDebug(target, scope, pollute);
+            elseBody.compileWithDebug(target, scope, pollute, breakpoint);
             int end = target.size();
 
             target.set(start, Instruction.jmpIfNot(loc(), mid - start));
             target.set(mid - 1, Instruction.jmp(loc(), end - mid + 1));
         }
     }
-    
     @Override
-    public Statement optimize() {
+    public void compile(CompileTarget target, ScopeRecord scope, boolean pollute) {
-        var cond = condition.optimize();
+        compileWithDebug(target, scope, pollute, BreakpointType.STEP_IN);
-        var b = body.optimize();
-        var e = elseBody == null ? null : elseBody.optimize();
-
-        if (b.pure()) b = new CompoundStatement(null);
-        if (e != null && e.pure()) e = null;
-
-        if (b.pure() && e == null) return new DiscardStatement(loc(), cond).optimize();
-        else return new IfStatement(loc(), cond, b, e);
     }
 
     public IfStatement(Location loc, Statement condition, Statement body, Statement elseBody) {

src/me/topchetoeu/jscript/compilation/control/SwitchStatement.java

@@ -6,6 +6,7 @@ import me.topchetoeu.jscript.Location;
 import me.topchetoeu.jscript.compilation.CompileTarget;
 import me.topchetoeu.jscript.compilation.Instruction;
 import me.topchetoeu.jscript.compilation.Statement;
+import me.topchetoeu.jscript.compilation.Instruction.BreakpointType;
 import me.topchetoeu.jscript.compilation.Instruction.Type;
 import me.topchetoeu.jscript.engine.Operation;
 import me.topchetoeu.jscript.engine.scope.ScopeRecord;
@@ -36,7 +37,7 @@ public class SwitchStatement extends Statement {
         var caseToStatement = new HashMap<Integer, Integer>();
         var statementToIndex = new HashMap<Integer, Integer>();
 
-        value.compile(target, scope, true);
+        value.compileWithDebug(target, scope, true, BreakpointType.STEP_OVER);
 
         for (var ccase : cases) {
             target.add(Instruction.dup(loc()));
@@ -52,7 +53,7 @@ public class SwitchStatement extends Statement {
 
         for (var stm : body) {
             statementToIndex.put(statementToIndex.size(), target.size());
-            stm.compileWithDebug(target, scope, false);
+            stm.compileWithDebug(target, scope, false, BreakpointType.STEP_OVER);
         }
 
         int end = target.size();

src/me/topchetoeu/jscript/compilation/control/TryStatement.java

@@ -25,27 +25,28 @@ public class TryStatement extends Statement {
     public void compile(CompileTarget target, ScopeRecord scope, boolean pollute) {
         target.add(Instruction.nop(null));
 
-        int start = target.size(), tryN, catchN = -1, finN = -1;
+        int start = target.size(), catchStart = -1, finallyStart = -1;
 
         tryBody.compile(target, scope, false);
-        tryN = target.size() - start;
+        target.add(Instruction.tryEnd(loc()));
 
         if (catchBody != null) {
-            int tmp = target.size();
+            catchStart = target.size() - start;
             var local = scope instanceof GlobalScope ? scope.child() : (LocalScopeRecord)scope;
             local.define(name, true);
             catchBody.compile(target, scope, false);
             local.undefine();
-            catchN = target.size() - tmp;
+            target.add(Instruction.tryEnd(loc()));
         }
 
         if (finallyBody != null) {
-            int tmp = target.size();
+            finallyStart = target.size() - start;
             finallyBody.compile(target, scope, false);
-            finN = target.size() - tmp;
+            target.add(Instruction.tryEnd(loc()));
         }
 
-        target.set(start - 1, Instruction.tryInstr(loc(), tryN, catchN, finN));
+
+        target.set(start - 1, Instruction.tryStart(loc(), catchStart, finallyStart, target.size() - start));
         if (pollute) target.add(Instruction.loadValue(loc(), null));
     }
 

src/me/topchetoeu/jscript/compilation/control/WhileStatement.java

@@ -3,13 +3,10 @@ package me.topchetoeu.jscript.compilation.control;
 import me.topchetoeu.jscript.Location;
 import me.topchetoeu.jscript.compilation.Statement;
 import me.topchetoeu.jscript.compilation.CompileTarget;
-import me.topchetoeu.jscript.compilation.CompoundStatement;
-import me.topchetoeu.jscript.compilation.DiscardStatement;
 import me.topchetoeu.jscript.compilation.Instruction;
+import me.topchetoeu.jscript.compilation.Instruction.BreakpointType;
 import me.topchetoeu.jscript.compilation.Instruction.Type;
-import me.topchetoeu.jscript.compilation.values.ConstantStatement;
 import me.topchetoeu.jscript.engine.scope.ScopeRecord;
-import me.topchetoeu.jscript.engine.values.Values;
 
 public class WhileStatement extends Statement {
     public final Statement condition, body;
@@ -21,22 +18,11 @@ public class WhileStatement extends Statement {
     }
     @Override
     public void compile(CompileTarget target, ScopeRecord scope, boolean pollute) {
-        if (condition instanceof ConstantStatement) {
-            if (Values.toBoolean(((ConstantStatement)condition).value)) {
-                int start = target.size();
-                body.compile(target, scope, false);
-                int end = target.size();
-                replaceBreaks(target, label, start, end, start, end + 1);
-                target.add(Instruction.jmp(loc(), start - target.size()));
-                return;
-            }
-        }
-
         int start = target.size();
         condition.compile(target, scope, true);
         int mid = target.size();
         target.add(Instruction.nop(null));
-        body.compile(target, scope, false);
+        body.compileWithDebug(target, scope, false, BreakpointType.STEP_OVER);
 
         int end = target.size();
 
@@ -46,19 +32,6 @@ public class WhileStatement extends Statement {
         target.set(mid, Instruction.jmpIfNot(loc(), end - mid + 1));
         if (pollute) target.add(Instruction.loadValue(loc(), null));
     }
-    @Override
-    public Statement optimize() {
-        var cond = condition.optimize();
-        var b = body.optimize();
-
-        if (b instanceof ContinueStatement) {
-            b = new CompoundStatement(loc());
-        }
-        else if (b instanceof BreakStatement) return new DiscardStatement(loc(), cond).optimize();
-
-        if (b.pure()) return new WhileStatement(loc(), label, cond, new CompoundStatement(null));
-        else return new WhileStatement(loc(), label, cond, b);
-    }
 
     public WhileStatement(Location loc, String label, Statement condition, Statement body) {
         super(loc);
@@ -71,21 +44,11 @@ public class WhileStatement extends Statement {
         for (int i = start; i < end; i++) {
             var instr = target.get(i);
             if (instr.type == Type.NOP && instr.is(0, "cont") && (instr.get(1) == null || instr.is(1, label))) {
-                target.set(i, Instruction.jmp(instr.location, continuePoint - i));
+                target.set(i, Instruction.jmp(instr.location, continuePoint - i).setDbgData(target.get(i)));
             }
             if (instr.type == Type.NOP && instr.is(0, "break") && (instr.get(1) == null || instr.is(1, label))) {
-                target.set(i, Instruction.jmp(instr.location, breakPoint - i));
+                target.set(i, Instruction.jmp(instr.location, breakPoint - i).setDbgData(target.get(i)));
             }
         }
     }
-
-    // public static CompoundStatement ofFor(Location loc, String label, Statement declaration, Statement condition, Statement increment, Statement body) {
-    //     return new CompoundStatement(loc,
-    //         declaration,
-    //         new WhileStatement(loc, label, condition, new CompoundStatement(loc,
-    //             body,
-    //             increment
-    //         ))
-    //     );
-    // }
 }

src/me/topchetoeu/jscript/compilation/values/ArrayStatement.java

@@ -1,36 +1,41 @@
-package me.topchetoeu.jscript.compilation.values;
+package me.topchetoeu.jscript.compilation.values;
-
+
-import me.topchetoeu.jscript.Location;
+import me.topchetoeu.jscript.Location;
-import me.topchetoeu.jscript.compilation.CompileTarget;
+import me.topchetoeu.jscript.compilation.CompileTarget;
-import me.topchetoeu.jscript.compilation.Instruction;
+import me.topchetoeu.jscript.compilation.Instruction;
-import me.topchetoeu.jscript.compilation.Statement;
+import me.topchetoeu.jscript.compilation.Statement;
-import me.topchetoeu.jscript.engine.scope.ScopeRecord;
+import me.topchetoeu.jscript.engine.scope.ScopeRecord;
-
+
-public class ArrayStatement extends Statement {
+public class ArrayStatement extends Statement {
-    public final Statement[] statements;
+    public final Statement[] statements;
-
+
-    @Override
+    @Override public boolean pure() {
-    public boolean pure() { return true; }
+        for (var stm : statements) {
-
+            if (!stm.pure()) return false;
-    @Override
+        }
-    public void compile(CompileTarget target, ScopeRecord scope, boolean pollute) {
+
-        target.add(Instruction.loadArr(loc(), statements.length));
+        return true;
-
+    }
-        for (var i = 0; i < statements.length; i++) {
+
-            var el = statements[i];
+    @Override
-            if (el != null) {
+    public void compile(CompileTarget target, ScopeRecord scope, boolean pollute) {
-                target.add(Instruction.dup(loc()));
+        target.add(Instruction.loadArr(loc(), statements.length));
-                target.add(Instruction.loadValue(loc(), i));
+
-                el.compile(target, scope, true);
+        for (var i = 0; i < statements.length; i++) {
-                target.add(Instruction.storeMember(loc()));
+            var el = statements[i];
-            }
+            if (el != null) {
-        }
+                target.add(Instruction.dup(loc()));
-
+                target.add(Instruction.loadValue(loc(), i));
-        if (!pollute) target.add(Instruction.discard(loc()));
+                el.compile(target, scope, true);
-    }
+                target.add(Instruction.storeMember(loc()));
-
+            }
-    public ArrayStatement(Location loc, Statement[] statements) {
+        }
-        super(loc);
+
-        this.statements = statements;
+        if (!pollute) target.add(Instruction.discard(loc()));
-    }
+    }
-}
+
+    public ArrayStatement(Location loc, Statement[] statements) {
+        super(loc);
+        this.statements = statements;
+    }
+}

src/me/topchetoeu/jscript/compilation/values/CallStatement.java

@@ -4,15 +4,18 @@ import me.topchetoeu.jscript.Location;
 import me.topchetoeu.jscript.compilation.CompileTarget;
 import me.topchetoeu.jscript.compilation.Instruction;
 import me.topchetoeu.jscript.compilation.Statement;
+import me.topchetoeu.jscript.compilation.Instruction.BreakpointType;
 import me.topchetoeu.jscript.engine.scope.ScopeRecord;
 
 public class CallStatement extends Statement {
     public final Statement func;
     public final Statement[] args;
+    public final boolean isNew;
 
     @Override
-    public void compile(CompileTarget target, ScopeRecord scope, boolean pollute) {
+    public void compileWithDebug(CompileTarget target, ScopeRecord scope, boolean pollute, BreakpointType type) {
-        if (func instanceof IndexStatement) {
+        if (isNew) func.compile(target, scope, true);
+        else if (func instanceof IndexStatement) {
             ((IndexStatement)func).compile(target, scope, true, true);
         }
         else {
@@ -22,18 +25,26 @@ public class CallStatement extends Statement {
 
         for (var arg : args) arg.compile(target, scope, true);
 
-        target.add(Instruction.call(loc(), args.length));
+        target.queueDebug(type);
-        target.setDebug();
+        if (isNew) target.add(Instruction.callNew(loc(), args.length));
+        else target.add(Instruction.call(loc(), args.length));
+
         if (!pollute) target.add(Instruction.discard(loc()));
     }
+    @Override
+    public void compile(CompileTarget target, ScopeRecord scope, boolean pollute) {
+        compileWithDebug(target, scope, pollute, BreakpointType.STEP_IN);
+    }
 
-    public CallStatement(Location loc, Statement func, Statement ...args) {
+    public CallStatement(Location loc, boolean isNew, Statement func, Statement ...args) {
         super(loc);
+        this.isNew = isNew;
         this.func = func;
         this.args = args;
     }
-    public CallStatement(Location loc, Statement obj, Object key, Statement ...args) {
+    public CallStatement(Location loc, boolean isNew, Statement obj, Object key, Statement ...args) {
         super(loc);
+        this.isNew = isNew;
         this.func = new IndexStatement(loc, obj, new ConstantStatement(loc, key));
         this.args = args;
     }

src/me/topchetoeu/jscript/compilation/values/CommaStatement.java

@@ -1,38 +0,0 @@
-package me.topchetoeu.jscript.compilation.values;
-
-import java.util.Vector;
-
-import me.topchetoeu.jscript.Location;
-import me.topchetoeu.jscript.compilation.CompileTarget;
-import me.topchetoeu.jscript.compilation.Statement;
-import me.topchetoeu.jscript.engine.scope.ScopeRecord;
-
-public class CommaStatement extends Statement {
-    public final Statement[] values;
-
-    @Override
-    public void compile(CompileTarget target, ScopeRecord scope, boolean pollute) {
-        for (var i = 0; i < values.length; i++) {
-            values[i].compileWithDebug(target, scope, i == values.length - 1 && pollute);
-        }
-    }
-    
-    @Override
-    public Statement optimize() {
-        var res = new Vector<Statement>(values.length);
-
-        for (var i = 0; i < values.length; i++) {
-            var stm = values[i].optimize();
-            if (i < values.length - 1 && stm.pure()) continue;
-            res.add(stm);
-        }
-
-        if (res.size() == 1) return res.get(0);
-        else return new CommaStatement(loc(), res.toArray(Statement[]::new));
-    }
-
-    public CommaStatement(Location loc, Statement ...args) {
-        super(loc);
-        this.values = args;
-    }
-}

src/me/topchetoeu/jscript/compilation/values/ConstantStatement.java

@@ -9,8 +9,7 @@ import me.topchetoeu.jscript.engine.scope.ScopeRecord;
 public class ConstantStatement extends Statement {
     public final Object value;
 
-    @Override
+    @Override public boolean pure() { return true; }
-    public boolean pure() { return true; }
 
     @Override
     public void compile(CompileTarget target, ScopeRecord scope, boolean pollute) {

src/me/topchetoeu/jscript/compilation/values/DiscardStatement.java

@@ -1,30 +1,24 @@
 package me.topchetoeu.jscript.compilation.values;
 
 import me.topchetoeu.jscript.Location;
-import me.topchetoeu.jscript.compilation.Statement;
-import me.topchetoeu.jscript.engine.scope.ScopeRecord;
 import me.topchetoeu.jscript.compilation.CompileTarget;
 import me.topchetoeu.jscript.compilation.Instruction;
+import me.topchetoeu.jscript.compilation.Statement;
+import me.topchetoeu.jscript.engine.scope.ScopeRecord;
 
-public class VoidStatement extends Statement {
+public class DiscardStatement extends Statement {
     public final Statement value;
 
+    @Override public boolean pure() { return value.pure(); }
+
     @Override
     public void compile(CompileTarget target, ScopeRecord scope, boolean pollute) {
-        if (value != null) value.compile(target, scope, false);
+        value.compile(target, scope, false);
         if (pollute) target.add(Instruction.loadValue(loc(), null));
     }
 
-    @Override
+    public DiscardStatement(Location loc, Statement val) {
-    public Statement optimize() {
-        if (value == null) return this;
-        var val = value.optimize();
-        if (val.pure()) return new ConstantStatement(loc(), null);
-        else return new VoidStatement(loc(), val);
-    }
-
-    public VoidStatement(Location loc, Statement value) {
         super(loc);
-        this.value = value;
+        this.value = val;
     }
 }

src/me/topchetoeu/jscript/compilation/values/FunctionStatement.java

@@ -17,15 +17,15 @@ public class FunctionStatement extends Statement {
     public final String varName;
     public final String[] args;
     public final boolean statement;
+    public final Location end;
 
     private static Random rand = new Random();
 
-    @Override
+    @Override public boolean pure() { return varName == null && statement; }
-    public boolean pure() { return varName == null; }
 
     @Override
     public void declare(ScopeRecord scope) {
-        if (varName != null) scope.define(varName);
+        if (varName != null && statement) scope.define(varName);
     }
 
     public static void checkBreakAndCont(CompileTarget target, int start) {
@@ -41,7 +41,7 @@ public class FunctionStatement extends Statement {
         }
     }
 
-    protected long compileBody(CompileTarget target, ScopeRecord scope, boolean polute) {
+    private long compileBody(CompileTarget target, ScopeRecord scope, boolean polute) {
         for (var i = 0; i < args.length; i++) {
             for (var j = 0; j < i; j++) {
                 if (args[i].equals(args[j])) {
@@ -71,11 +71,14 @@ public class FunctionStatement extends Statement {
 
         body.declare(subscope);
         body.compile(subtarget, subscope, false);
-        subtarget.add(Instruction.ret(subtarget.lastLoc(loc())));
+        subtarget.add(Instruction.ret(end));
         checkBreakAndCont(subtarget, 0);
 
         if (polute) target.add(Instruction.loadFunc(loc(), id, subscope.getCaptures()));
-        target.functions.put(id, new FunctionBody(subscope.localsCount(), args.length, subtarget.array(), subscope.captures(), subscope.locals()));
+        target.functions.put(id, new FunctionBody(
+            subscope.localsCount(), args.length,
+            subtarget.array(), subscope.captures(), subscope.locals()
+        ));
 
         return id;
     }
@@ -106,9 +109,10 @@ public class FunctionStatement extends Statement {
         compile(target, scope, pollute, null);
     }
 
-    public FunctionStatement(Location loc, String varName, String[] args, boolean statement, CompoundStatement body) {
+    public FunctionStatement(Location loc, Location end, String varName, String[] args, boolean statement, CompoundStatement body) {
         super(loc);
 
+        this.end = end;
         this.varName = varName;
         this.statement = statement;
 

src/me/topchetoeu/jscript/compilation/values/GlobalThisStatement.java

@@ -7,8 +7,7 @@ import me.topchetoeu.jscript.compilation.Instruction;
 import me.topchetoeu.jscript.engine.scope.ScopeRecord;
 
 public class GlobalThisStatement extends Statement {
-    @Override
+    @Override public boolean pure() { return true; }
-    public boolean pure() { return true; }
 
     @Override
     public void compile(CompileTarget target, ScopeRecord scope, boolean pollute) {

src/me/topchetoeu/jscript/compilation/values/IndexAssignStatement.java

@@ -4,6 +4,7 @@ import me.topchetoeu.jscript.Location;
 import me.topchetoeu.jscript.compilation.CompileTarget;
 import me.topchetoeu.jscript.compilation.Instruction;
 import me.topchetoeu.jscript.compilation.Statement;
+import me.topchetoeu.jscript.compilation.Instruction.BreakpointType;
 import me.topchetoeu.jscript.engine.Operation;
 import me.topchetoeu.jscript.engine.scope.ScopeRecord;
 
@@ -25,7 +26,7 @@ public class IndexAssignStatement extends Statement {
             target.add(Instruction.operation(loc(), operation));
 
             target.add(Instruction.storeMember(loc(), pollute));
-            target.setDebug();
+            target.setDebug(BreakpointType.STEP_IN);
         }
         else {
             object.compile(target, scope, true);
@@ -33,7 +34,7 @@ public class IndexAssignStatement extends Statement {
             value.compile(target, scope, true);
 
             target.add(Instruction.storeMember(loc(), pollute));
-            target.setDebug();
+            target.setDebug(BreakpointType.STEP_IN);
         }
     }
 

src/me/topchetoeu/jscript/compilation/values/IndexStatement.java

@@ -5,6 +5,7 @@ import me.topchetoeu.jscript.compilation.AssignableStatement;
 import me.topchetoeu.jscript.compilation.CompileTarget;
 import me.topchetoeu.jscript.compilation.Instruction;
 import me.topchetoeu.jscript.compilation.Statement;
+import me.topchetoeu.jscript.compilation.Instruction.BreakpointType;
 import me.topchetoeu.jscript.engine.Operation;
 import me.topchetoeu.jscript.engine.scope.ScopeRecord;
 
@@ -12,9 +13,6 @@ public class IndexStatement extends AssignableStatement {
     public final Statement object;
     public final Statement index;
 
-    @Override
-    public boolean pure() { return true; }
-
     @Override
     public Statement toAssign(Statement val, Operation operation) {
         return new IndexAssignStatement(loc(), object, index, val, operation);
@@ -24,13 +22,13 @@ public class IndexStatement extends AssignableStatement {
         if (dupObj) target.add(Instruction.dup(loc()));
         if (index instanceof ConstantStatement) {
             target.add(Instruction.loadMember(loc(), ((ConstantStatement)index).value));
-            target.setDebug();
+            target.setDebug(BreakpointType.STEP_IN);
             return;
         }
 
         index.compile(target, scope, true);
         target.add(Instruction.loadMember(loc()));
-        target.setDebug();
+        target.setDebug(BreakpointType.STEP_IN);
         if (!pollute) target.add(Instruction.discard(loc()));
     }
     @Override

src/me/topchetoeu/jscript/compilation/values/LazyAndStatement.java

@@ -10,10 +10,7 @@ import me.topchetoeu.jscript.engine.values.Values;
 public class LazyAndStatement extends Statement {
     public final Statement first, second;
 
-    @Override
+    @Override public boolean pure() { return first.pure() && second.pure(); }
-    public boolean pure() {
-        return first.pure() && second.pure();
-    }
 
     @Override
     public void compile(CompileTarget target, ScopeRecord scope, boolean pollute) {

src/me/topchetoeu/jscript/compilation/values/LazyOrStatement.java

@@ -10,10 +10,7 @@ import me.topchetoeu.jscript.engine.values.Values;
 public class LazyOrStatement extends Statement {
     public final Statement first, second;
 
-    @Override
+    @Override public boolean pure() { return first.pure() && second.pure(); }
-    public boolean pure() {
-        return first.pure() && second.pure();
-    }
 
     @Override
     public void compile(CompileTarget target, ScopeRecord scope, boolean pollute) {

src/me/topchetoeu/jscript/compilation/values/NewStatement.java

@@ -1,28 +0,0 @@
-package me.topchetoeu.jscript.compilation.values;
-
-import me.topchetoeu.jscript.Location;
-import me.topchetoeu.jscript.compilation.CompileTarget;
-import me.topchetoeu.jscript.compilation.Instruction;
-import me.topchetoeu.jscript.compilation.Statement;
-import me.topchetoeu.jscript.engine.scope.ScopeRecord;
-
-public class NewStatement extends Statement {
-    public final Statement func;
-    public final Statement[] args;
-
-    @Override
-    public void compile(CompileTarget target, ScopeRecord scope, boolean pollute) {
-        func.compile(target, scope, true);
-
-        for (var arg : args) arg.compile(target, scope, true);
-
-        target.add(Instruction.callNew(loc(), args.length));
-        target.setDebug();
-    }
-
-    public NewStatement(Location loc, Statement func, Statement ...args) {
-        super(loc);
-        this.func = func;
-        this.args = args;
-    }
-}

src/me/topchetoeu/jscript/compilation/values/ObjectStatement.java

@@ -14,6 +14,14 @@ public class ObjectStatement extends Statement {
     public final Map<Object, FunctionStatement> getters;
     public final Map<Object, FunctionStatement> setters;
 
+    @Override public boolean pure() {
+        for (var el : map.values()) {
+            if (!el.pure()) return false;
+        }
+
+        return true;
+    }
+
     @Override
     public void compile(CompileTarget target, ScopeRecord scope, boolean pollute) {
         target.add(Instruction.loadObj(loc()));

src/me/topchetoeu/jscript/compilation/values/OperationStatement.java

@@ -4,16 +4,21 @@ import me.topchetoeu.jscript.Location;
 import me.topchetoeu.jscript.compilation.CompileTarget;
 import me.topchetoeu.jscript.compilation.Instruction;
 import me.topchetoeu.jscript.compilation.Statement;
-import me.topchetoeu.jscript.compilation.control.ThrowStatement;
 import me.topchetoeu.jscript.engine.Operation;
 import me.topchetoeu.jscript.engine.scope.ScopeRecord;
-import me.topchetoeu.jscript.engine.values.Values;
-import me.topchetoeu.jscript.exceptions.EngineException;
 
 public class OperationStatement extends Statement {
     public final Statement[] args;
     public final Operation operation;
 
+    @Override public boolean pure() {
+        for (var el : args) {
+            if (!el.pure()) return false;
+        }
+
+        return true;
+    }
+
     @Override
     public void compile(CompileTarget target, ScopeRecord scope, boolean pollute) {
         for (var arg : args) {
@@ -24,39 +29,6 @@ public class OperationStatement extends Statement {
         else target.add(Instruction.discard(loc()));
     }
 
-    @Override
-    public boolean pure() {
-        for (var arg : args) {
-            if (!arg.pure()) return false;
-        }
-        return true;
-    }
-
-    @Override
-    public Statement optimize() {
-        var args = new Statement[this.args.length];
-        var allConst = true;
-
-        for (var i = 0; i < this.args.length; i++) {
-            args[i] = this.args[i].optimize();
-            if (!(args[i] instanceof ConstantStatement)) allConst = false;
-        }
-
-        if (allConst) {
-            var vals = new Object[this.args.length];
-
-            for (var i = 0; i < args.length; i++) {
-                vals[i] = ((ConstantStatement)args[i]).value;
-            }
-
-            try { return new ConstantStatement(loc(), Values.operation(null, operation, vals)); }
-            catch (EngineException e) { return new ThrowStatement(loc(), new ConstantStatement(loc(), e.value)); }
-        }
-
-        return new OperationStatement(loc(), operation, args);
-
-    }
-
     public OperationStatement(Location loc, Operation operation, Statement ...args) {
         super(loc);
         this.operation = operation;

src/me/topchetoeu/jscript/compilation/values/RegexStatement.java

@@ -9,8 +9,8 @@ import me.topchetoeu.jscript.engine.scope.ScopeRecord;
 public class RegexStatement extends Statement {
     public final String pattern, flags;
 
-    @Override
+    // Not really pure, since a function is called, but can be ignored.
-    public boolean pure() { return true; }
+    @Override public boolean pure() { return true; }
 
     @Override
     public void compile(CompileTarget target, ScopeRecord scope, boolean pollute) {

src/me/topchetoeu/jscript/compilation/values/TypeofStatement.java

@@ -5,13 +5,13 @@ import me.topchetoeu.jscript.compilation.CompileTarget;
 import me.topchetoeu.jscript.compilation.Instruction;
 import me.topchetoeu.jscript.compilation.Statement;
 import me.topchetoeu.jscript.engine.scope.ScopeRecord;
-import me.topchetoeu.jscript.engine.values.Values;
 
 public class TypeofStatement extends Statement {
     public final Statement value;
 
-    @Override
+    // Not really pure, since a variable from the global scope could be accessed,
-    public boolean pure() { return true; }
+    // which could lead to code execution, that would get omitted
+    @Override public boolean pure() { return true; }
 
     @Override
     public void compile(CompileTarget target, ScopeRecord scope, boolean pollute) {
@@ -26,23 +26,6 @@ public class TypeofStatement extends Statement {
         target.add(Instruction.typeof(loc()));
     }
 
-    @Override
-    public Statement optimize() {
-        var val = value.optimize();
-
-        if (val instanceof ConstantStatement) {
-            return new ConstantStatement(loc(), Values.type(((ConstantStatement)val).value));
-        }
-        else if (
-            val instanceof ObjectStatement ||
-            val instanceof ArrayStatement ||
-            val instanceof GlobalThisStatement
-        ) return new ConstantStatement(loc(), "object");
-        else if(val instanceof FunctionStatement) return new ConstantStatement(loc(), "function");
-
-        return new TypeofStatement(loc(), val);
-    }
-
     public TypeofStatement(Location loc, Statement value) {
         super(loc);
         this.value = value;

src/me/topchetoeu/jscript/compilation/values/VariableAssignStatement.java

@@ -12,6 +12,8 @@ public class VariableAssignStatement extends Statement {
     public final Statement value;
     public final Operation operation;
 
+    @Override public boolean pure() { return false; }
+
     @Override
     public void compile(CompileTarget target, ScopeRecord scope, boolean pollute) {
         var i = scope.getKey(name);

src/me/topchetoeu/jscript/compilation/values/VariableIndexStatement.java

@@ -9,8 +9,7 @@ import me.topchetoeu.jscript.engine.scope.ScopeRecord;
 public class VariableIndexStatement extends Statement {
     public final int index;
 
-    @Override
+    @Override public boolean pure() { return true; }
-    public boolean pure() { return true; }
 
     @Override
     public void compile(CompileTarget target, ScopeRecord scope, boolean pollute) {

src/me/topchetoeu/jscript/compilation/values/VariableStatement.java

@@ -11,8 +11,7 @@ import me.topchetoeu.jscript.engine.scope.ScopeRecord;
 public class VariableStatement extends AssignableStatement {
     public final String name;
 
-    @Override
+    @Override public boolean pure() { return false; }
-    public boolean pure() { return true; }
 
     @Override
     public Statement toAssign(Statement val, Operation operation) {

src/me/topchetoeu/jscript/engine/Context.java

@@ -1,104 +1,125 @@
-package me.topchetoeu.jscript.engine;
+package me.topchetoeu.jscript.engine;
-
+
-import java.util.ArrayList;
+import java.util.ArrayList;
-import java.util.Collections;
+import java.util.Arrays;
-import java.util.List;
+import java.util.Collections;
-import java.util.Stack;
+import java.util.List;
-import java.util.TreeSet;
+import java.util.Stack;
-
+import java.util.TreeSet;
-import me.topchetoeu.jscript.Filename;
+import java.util.stream.Collectors;
-import me.topchetoeu.jscript.Location;
+
-import me.topchetoeu.jscript.engine.frame.CodeFrame;
+import me.topchetoeu.jscript.Filename;
-import me.topchetoeu.jscript.engine.values.ArrayValue;
+import me.topchetoeu.jscript.Location;
-import me.topchetoeu.jscript.engine.values.FunctionValue;
+import me.topchetoeu.jscript.engine.frame.CodeFrame;
-import me.topchetoeu.jscript.engine.values.Values;
+import me.topchetoeu.jscript.engine.values.ArrayValue;
-import me.topchetoeu.jscript.exceptions.EngineException;
+import me.topchetoeu.jscript.engine.values.FunctionValue;
-import me.topchetoeu.jscript.mapping.SourceMap;
+import me.topchetoeu.jscript.engine.values.Values;
-
+import me.topchetoeu.jscript.exceptions.EngineException;
-public class Context {
+import me.topchetoeu.jscript.mapping.SourceMap;
-    private final Stack<Environment> env = new Stack<>();
+
-    private final ArrayList<CodeFrame> frames = new ArrayList<>();
+public class Context {
-    public final Engine engine;
+    private final Stack<Environment> env = new Stack<>();
-
+    private final ArrayList<CodeFrame> frames = new ArrayList<>();
-    public Environment environment() {
+    public final Engine engine;
-        return env.empty() ? null : env.peek();
+
-    }
+    public Environment environment() {
-
+        return env.empty() ? null : env.peek();
-    public Context pushEnv(Environment env) {
+    }
-        this.env.push(env);
+
-        return this;
+    public Context pushEnv(Environment env) {
-    }
+        this.env.push(env);
-    public void popEnv() {
+        return this;
-        if (!env.empty()) this.env.pop();
+    }
-    }
+    public void popEnv() {
-
+        if (!env.empty()) this.env.pop();
-    public FunctionValue compile(Filename filename, String raw) {
+    }
-        var env = environment();
+
-        var result = env.compile.call(this, null, raw, filename.toString(), env);
+    public FunctionValue compile(Filename filename, String raw) {
-
+        var env = environment();
-        var function = (FunctionValue)Values.getMember(this, result, "function");
+        var result = env.compile.call(this, null, raw, filename.toString(), env);
-        var rawMapChain = ((ArrayValue)Values.getMember(this, result, "mapChain")).toArray();
+
-        var maps = new SourceMap[rawMapChain.length];
+        var function = (FunctionValue)Values.getMember(this, result, "function");
-        for (var i = 0; i < maps.length; i++) maps[i] = SourceMap.parse((String)rawMapChain[i]);
+        if (!engine.debugging) return function;
-        var map = SourceMap.chain(maps);
+
-
+        var rawMapChain = ((ArrayValue)Values.getMember(this, result, "mapChain")).toArray();
-        engine.onSource(filename, raw, new TreeSet<>(), map);
+        var breakpoints = new TreeSet<>(
-
+            Arrays.stream(((ArrayValue)Values.getMember(this, result, "breakpoints")).toArray())
-        return function;
+                .map(v -> Location.parse(Values.toString(this, v)))
-    }
+                .collect(Collectors.toList())
-
+        );
-
+        var maps = new SourceMap[rawMapChain.length];
-    public void pushFrame(CodeFrame frame) {
+
-        frames.add(frame);
+        for (var i = 0; i < maps.length; i++) maps[i] = SourceMap.parse(Values.toString(this, (String)rawMapChain[i]));
-        if (frames.size() > engine.maxStackFrames) throw EngineException.ofRange("Stack overflow!");
+
-        pushEnv(frame.function.environment);
+        var map = SourceMap.chain(maps);
-    }
+
-    public boolean popFrame(CodeFrame frame) {
+        if (map != null) {
-        if (frames.size() == 0) return false;
+            var newBreakpoints = new TreeSet<Location>();
-        if (frames.get(frames.size() - 1) != frame) return false;
+            for (var bp : breakpoints) {
-        frames.remove(frames.size() - 1);
+                bp = map.toCompiled(bp);
-        popEnv();
+                if (bp != null) newBreakpoints.add(bp);
-        engine.onFramePop(this, frame);
+            }
-        return true;
+            breakpoints = newBreakpoints;
-    }
+        }
-    public CodeFrame peekFrame() {
+
-        if (frames.size() == 0) return null;
+        engine.onSource(filename, raw, breakpoints, map);
-        return frames.get(frames.size() - 1);
+
-    }
+        return function;
-
+    }
-    public List<CodeFrame> frames() {
+
-        return Collections.unmodifiableList(frames);
+
-    }
+    public void pushFrame(CodeFrame frame) {
-    public List<String> stackTrace() {
+        frames.add(frame);
-        var res = new ArrayList<String>();
+        if (frames.size() > engine.maxStackFrames) throw EngineException.ofRange("Stack overflow!");
-
+        pushEnv(frame.function.environment);
-        for (var i = frames.size() - 1; i >= 0; i--) {
+        engine.onFramePush(this, frame);
-            var el = frames.get(i);
+    }
-            var name = el.function.name;
+    public boolean popFrame(CodeFrame frame) {
-            Location loc = null;
+        if (frames.size() == 0) return false;
-
+        if (frames.get(frames.size() - 1) != frame) return false;
-            for (var j = el.codePtr; j >= 0 && loc == null; j--) loc = el.function.body[j].location;
+        frames.remove(frames.size() - 1);
-            if (loc == null) loc = el.function.loc();
+        popEnv();
-
+        engine.onFramePop(this, frame);
-            var trace = "";
+        return true;
-
+    }
-            if (loc != null) trace += "at " + loc.toString() + " ";
+    public CodeFrame peekFrame() {
-            if (name != null && !name.equals("")) trace += "in " + name + " ";
+        if (frames.size() == 0) return null;
-
+        return frames.get(frames.size() - 1);
-            trace = trace.trim();
+    }
-
+
-            if (!trace.equals("")) res.add(trace);
+    public List<CodeFrame> frames() {
-        }
+        return Collections.unmodifiableList(frames);
-
+    }
-        return res;
+    public List<String> stackTrace() {
-    }
+        var res = new ArrayList<String>();
-
+
-    public Context(Engine engine) {
+        for (var i = frames.size() - 1; i >= 0; i--) {
-        this.engine = engine;
+            var el = frames.get(i);
-    }
+            var name = el.function.name;
-    public Context(Engine engine, Environment env) {
+            Location loc = null;
-        this(engine);
+
-        this.pushEnv(env);
+            for (var j = el.codePtr; j >= 0 && loc == null; j--) loc = el.function.body[j].location;
-        
+            if (loc == null) loc = el.function.loc();
-    }
+
-}
+            var trace = "";
+
+            if (loc != null) trace += "at " + loc.toString() + " ";
+            if (name != null && !name.equals("")) trace += "in " + name + " ";
+
+            trace = trace.trim();
+
+            if (!trace.equals("")) res.add(trace);
+        }
+
+        return res;
+    }
+
+    public Context(Engine engine) {
+        this.engine = engine;
+    }
+    public Context(Engine engine, Environment env) {
+        this(engine);
+        this.pushEnv(env);
+        
+    }
+}

src/me/topchetoeu/jscript/engine/Engine.java

@@ -15,6 +15,7 @@ import me.topchetoeu.jscript.events.Awaitable;
 import me.topchetoeu.jscript.events.DataNotifier;
 import me.topchetoeu.jscript.exceptions.EngineException;
 import me.topchetoeu.jscript.exceptions.InterruptException;
+import me.topchetoeu.jscript.mapping.SourceMap;
 
 public class Engine implements DebugController {
     private class UncompiledFunction extends FunctionValue {
@@ -66,22 +67,25 @@ public class Engine implements DebugController {
 
     private final HashMap<Filename, String> sources = new HashMap<>();
     private final HashMap<Filename, TreeSet<Location>> bpts = new HashMap<>();
+    private final HashMap<Filename, SourceMap> maps = new HashMap<>();
 
     private DebugController debugger;
     private Thread thread;
     private PriorityBlockingQueue<Task> tasks = new PriorityBlockingQueue<>();
 
-    public boolean attachDebugger(DebugController debugger) {
+    public synchronized boolean attachDebugger(DebugController debugger) {
         if (!debugging || this.debugger != null) return false;
 
-        for (var source : sources.entrySet()) {
+        for (var source : sources.entrySet()) debugger.onSource(
-            debugger.onSource(source.getKey(), source.getValue(), bpts.get(source.getKey()));
+            source.getKey(), source.getValue(),
-        }
+            bpts.get(source.getKey()),
+            maps.get(source.getKey())
+        );
 
         this.debugger = debugger;
         return true;
     }
-    public boolean detachDebugger() {
+    public synchronized boolean detachDebugger() {
         if (!debugging || this.debugger == null) return false;
         this.debugger = null;
         return true;
@@ -122,7 +126,7 @@ public class Engine implements DebugController {
     public boolean inExecThread() {
         return Thread.currentThread() == thread;
     }
-    public boolean isRunning() {
+    public synchronized boolean isRunning() {
         return this.thread != null;
     }
 
@@ -135,6 +139,10 @@ public class Engine implements DebugController {
         return pushMsg(micro, ctx, new UncompiledFunction(filename, raw), thisArg, args);
     }
 
+    @Override
+    public void onFramePush(Context ctx, CodeFrame frame) {
+        if (debugging && debugger != null) debugger.onFramePush(ctx, frame);
+    }
     @Override public void onFramePop(Context ctx, CodeFrame frame) {
         if (debugging && debugger != null) debugger.onFramePop(ctx, frame);
     }
@@ -142,11 +150,12 @@ public class Engine implements DebugController {
         if (debugging && debugger != null) return debugger.onInstruction(ctx, frame, instruction, returnVal, error, caught);
         else return false;
     }
-    @Override public void onSource(Filename filename, String source, TreeSet<Location> breakpoints) {
+    @Override public void onSource(Filename filename, String source, TreeSet<Location> breakpoints, SourceMap map) {
         if (!debugging) return;
-        if (debugger != null) debugger.onSource(filename, source, breakpoints);
+        if (debugger != null) debugger.onSource(filename, source, breakpoints, map);
         sources.put(filename, source);
         bpts.put(filename, breakpoints);
+        maps.put(filename, map);
     }
 
     public Engine(boolean debugging) {

src/me/topchetoeu/jscript/engine/Environment.java

@@ -1,114 +1,132 @@
-package me.topchetoeu.jscript.engine;
+package me.topchetoeu.jscript.engine;
-
+
-import java.util.HashMap;
+import java.util.HashMap;
-import java.util.TreeSet;
+import java.util.stream.Collectors;
-
+
-import me.topchetoeu.jscript.Filename;
+import me.topchetoeu.jscript.Filename;
-import me.topchetoeu.jscript.engine.scope.GlobalScope;
+import me.topchetoeu.jscript.Location;
-import me.topchetoeu.jscript.engine.values.ArrayValue;
+import me.topchetoeu.jscript.engine.scope.GlobalScope;
-import me.topchetoeu.jscript.engine.values.FunctionValue;
+import me.topchetoeu.jscript.engine.values.ArrayValue;
-import me.topchetoeu.jscript.engine.values.NativeFunction;
+import me.topchetoeu.jscript.engine.values.FunctionValue;
-import me.topchetoeu.jscript.engine.values.ObjectValue;
+import me.topchetoeu.jscript.engine.values.NativeFunction;
-import me.topchetoeu.jscript.engine.values.Symbol;
+import me.topchetoeu.jscript.engine.values.ObjectValue;
-import me.topchetoeu.jscript.engine.values.Values;
+import me.topchetoeu.jscript.engine.values.Symbol;
-import me.topchetoeu.jscript.exceptions.EngineException;
+import me.topchetoeu.jscript.engine.values.Values;
-import me.topchetoeu.jscript.filesystem.RootFilesystem;
+import me.topchetoeu.jscript.exceptions.EngineException;
-import me.topchetoeu.jscript.interop.Native;
+import me.topchetoeu.jscript.filesystem.RootFilesystem;
-import me.topchetoeu.jscript.interop.NativeGetter;
+import me.topchetoeu.jscript.interop.Native;
-import me.topchetoeu.jscript.interop.NativeSetter;
+import me.topchetoeu.jscript.interop.NativeGetter;
-import me.topchetoeu.jscript.interop.NativeWrapperProvider;
+import me.topchetoeu.jscript.interop.NativeSetter;
-import me.topchetoeu.jscript.parsing.Parsing;
+import me.topchetoeu.jscript.interop.NativeWrapperProvider;
-import me.topchetoeu.jscript.permissions.Permission;
+import me.topchetoeu.jscript.parsing.Parsing;
-import me.topchetoeu.jscript.permissions.PermissionsProvider;
+import me.topchetoeu.jscript.permissions.Permission;
-
+import me.topchetoeu.jscript.permissions.PermissionsProvider;
-public class Environment implements PermissionsProvider {
+
-    private HashMap<String, ObjectValue> prototypes = new HashMap<>();
+public class Environment implements PermissionsProvider {
-
+    private HashMap<String, ObjectValue> prototypes = new HashMap<>();
-    public final Data data = new Data();
+
-    public static final HashMap<String, Symbol> symbols = new HashMap<>();
+    public final Data data = new Data();
-
+    public static final HashMap<String, Symbol> symbols = new HashMap<>();
-    public GlobalScope global;
+
-    public WrappersProvider wrappers;
+    public GlobalScope global;
-    public PermissionsProvider permissions = null;
+    public WrappersProvider wrappers;
-    public final RootFilesystem filesystem = new RootFilesystem(this);
+    public PermissionsProvider permissions = null;
-
+    public final RootFilesystem filesystem = new RootFilesystem(this);
-    private static int nextId = 0;
+
-
+    private static int nextId = 0;
-    @Native public int id = ++nextId;
+
-
+    @Native public int id = ++nextId;
-    @Native public FunctionValue compile = new NativeFunction("compile", (ctx, thisArg, args) -> {
+
-        var source = Values.toString(ctx, args[0]);
+    @Native public FunctionValue compile = new NativeFunction("compile", (ctx, thisArg, args) -> {
-        var filename = Values.toString(ctx, args[1]);
+        var source = Values.toString(ctx, args[0]);
-        var env = Values.wrapper(args[2], Environment.class);
+        var filename = Values.toString(ctx, args[1]);
-        var res = new ObjectValue();
+        var isDebug = Values.toBoolean(args[2]);
-
+
-        res.defineProperty(ctx, "function", Parsing.compile(Engine.functions, new TreeSet<>(), env, Filename.parse(filename), source));
+        var env = Values.wrapper(args[2], Environment.class);
-        res.defineProperty(ctx, "mapChain", new ArrayValue());
+        var res = new ObjectValue();
-
+
-        return res;
+        System.out.println(source);
-    });
+        
-    @Native public FunctionValue regexConstructor = new NativeFunction("RegExp", (ctx, thisArg, args) -> {
+        var target = Parsing.compile(env, Filename.parse(filename), source);
-        throw EngineException.ofError("Regular expressions not supported.").setCtx(ctx.environment(), ctx.engine);
+        Engine.functions.putAll(target.functions);
-    });
+        Engine.functions.remove(0l);
-
+
-    public Environment addData(Data data) {
+        res.defineProperty(ctx, "function", target.func(env));
-        this.data.addAll(data);
+        res.defineProperty(ctx, "mapChain", new ArrayValue());
-        return this;
+
-    }
+
-
+        if (isDebug) {
-    @Native public ObjectValue proto(String name) {
+            res.defineProperty(ctx, "breakpoints", ArrayValue.of(ctx, target.breakpoints.stream().map(Location::toString).collect(Collectors.toList())));
-        return prototypes.get(name);
+        }
-    }
+
-    @Native public void setProto(String name, ObjectValue val) {
+        return res;
-        prototypes.put(name, val);
+    });
-    }
+    @Native public FunctionValue regexConstructor = new NativeFunction("RegExp", (ctx, thisArg, args) -> {
-
+        throw EngineException.ofError("Regular expressions not supported.").setCtx(ctx.environment(), ctx.engine);
-    @Native public Symbol symbol(String name) {
+    });
-        if (symbols.containsKey(name)) return symbols.get(name);
+
-        else {
+    public Environment addData(Data data) {
-            var res = new Symbol(name);
+        this.data.addAll(data);
-            symbols.put(name, res);
+        return this;
-            return res;
+    }
-        }
+
-    }
+    @Native public ObjectValue proto(String name) {
-
+        return prototypes.get(name);
-    @NativeGetter("global") public ObjectValue getGlobal() {
+    }
-        return global.obj;
+    @Native public void setProto(String name, ObjectValue val) {
-    }
+        prototypes.put(name, val);
-    @NativeSetter("global") public void setGlobal(ObjectValue val) {
+    }
-        global = new GlobalScope(val);
+
-    }
+    @Native public Symbol symbol(String name) {
-
+        return getSymbol(name);
-    @Native public Environment fork() {
+    }
-        var res = new Environment(compile, null, global);
+
-        res.wrappers = wrappers.fork(res);
+    @NativeGetter("global") public ObjectValue getGlobal() {
-        res.regexConstructor = regexConstructor;
+        return global.obj;
-        res.prototypes = new HashMap<>(prototypes);
+    }
-        return res;
+    @NativeSetter("global") public void setGlobal(ObjectValue val) {
-    }
+        global = new GlobalScope(val);
-    @Native public Environment child() {
+    }
-        var res = fork();
+
-        res.global = res.global.globalChild();
+    @Native public Environment fork() {
-        return res;
+        var res = new Environment(compile, null, global);
-    }
+        res.wrappers = wrappers.fork(res);
-
+        res.regexConstructor = regexConstructor;
-    @Override public boolean hasPermission(Permission perm, char delim) {
+        res.prototypes = new HashMap<>(prototypes);
-        return permissions == null || permissions.hasPermission(perm, delim);
+        return res;
-    }
+    }
-    @Override public boolean hasPermission(Permission perm) {
+    @Native public Environment child() {
-        return permissions == null || permissions.hasPermission(perm);
+        var res = fork();
-    }
+        res.global = res.global.globalChild();
-
+        return res;
-    public Context context(Engine engine) {
+    }
-        return new Context(engine).pushEnv(this);
+
-    }
+    @Override public boolean hasPermission(Permission perm, char delim) {
-
+        return permissions == null || permissions.hasPermission(perm, delim);
-    public Environment(FunctionValue compile, WrappersProvider nativeConverter, GlobalScope global) {
+    }
-        if (compile != null) this.compile = compile;
+    @Override public boolean hasPermission(Permission perm) {
-        if (nativeConverter == null) nativeConverter = new NativeWrapperProvider(this);
+        return permissions == null || permissions.hasPermission(perm);
-        if (global == null) global = new GlobalScope();
+    }
-
+
-        this.wrappers = nativeConverter;
+    public Context context(Engine engine) {
-        this.global = global;
+        return new Context(engine).pushEnv(this);
-    }
+    }
-}
+
+    public static Symbol getSymbol(String name) {
+        if (symbols.containsKey(name)) return symbols.get(name);
+        else {
+            var res = new Symbol(name);
+            symbols.put(name, res);
+            return res;
+        }
+    }
+
+    public Environment(FunctionValue compile, WrappersProvider nativeConverter, GlobalScope global) {
+        if (compile != null) this.compile = compile;
+        if (nativeConverter == null) nativeConverter = new NativeWrapperProvider(this);
+        if (global == null) global = new GlobalScope();
+
+        this.wrappers = nativeConverter;
+        this.global = global;
+    }
+}

src/me/topchetoeu/jscript/engine/debug/DebugController.java

@@ -1,40 +1,51 @@
-package me.topchetoeu.jscript.engine.debug;
+package me.topchetoeu.jscript.engine.debug;
-
+
-import java.util.TreeSet;
+import java.util.TreeSet;
-
+
-import me.topchetoeu.jscript.Filename;
+import me.topchetoeu.jscript.Filename;
-import me.topchetoeu.jscript.Location;
+import me.topchetoeu.jscript.Location;
-import me.topchetoeu.jscript.compilation.Instruction;
+import me.topchetoeu.jscript.compilation.Instruction;
-import me.topchetoeu.jscript.engine.Context;
+import me.topchetoeu.jscript.engine.Context;
-import me.topchetoeu.jscript.engine.frame.CodeFrame;
+import me.topchetoeu.jscript.engine.frame.CodeFrame;
-import me.topchetoeu.jscript.exceptions.EngineException;
+import me.topchetoeu.jscript.exceptions.EngineException;
-
+import me.topchetoeu.jscript.mapping.SourceMap;
-public interface DebugController {
+
-    /**
+public interface DebugController {
-     * Called when a script has been loaded
+    /**
-     * @param breakpoints 
+     * Called when a script has been loaded
-     */
+     * @param filename The name of the source
-    void onSource(Filename filename, String source, TreeSet<Location> breakpoints);
+     * @param source The name of the source
-
+     * @param breakpoints A set of all the breakpointable locations in this source
-    /**
+     * @param map The source map associated with this file. null if this source map isn't mapped
-     * Called immediatly before an instruction is executed, as well as after an instruction, if it has threw or returned.
+     */
-     * This function might pause in order to await debugging commands.
+    void onSource(Filename filename, String source, TreeSet<Location> breakpoints, SourceMap map);
-     * @param ctx The context of execution
+
-     * @param frame The frame in which execution is occuring
+    /**
-     * @param instruction The instruction which was or will be executed
+     * Called immediatly before an instruction is executed, as well as after an instruction, if it has threw or returned.
-     * @param loc The most recent location the code frame has been at
+     * This function might pause in order to await debugging commands.
-     * @param returnVal The return value of the instruction, Runners.NO_RETURN if none
+     * @param ctx The context of execution
-     * @param error The error that the instruction threw, null if none
+     * @param frame The frame in which execution is occuring
-     * @param caught Whether or not the error has been caught
+     * @param instruction The instruction which was or will be executed
-     * @return Whether or not the frame should restart
+     * @param loc The most recent location the code frame has been at
-     */
+     * @param returnVal The return value of the instruction, Runners.NO_RETURN if none
-    boolean onInstruction(Context ctx, CodeFrame frame, Instruction instruction, Object returnVal, EngineException error, boolean caught);
+     * @param error The error that the instruction threw, null if none
-
+     * @param caught Whether or not the error has been caught
-    /**
+     * @return Whether or not the frame should restart
-     * Called immediatly after a frame has been popped out of the frame stack.
+     */
-     * This function might pause in order to await debugging commands.
+    boolean onInstruction(Context ctx, CodeFrame frame, Instruction instruction, Object returnVal, EngineException error, boolean caught);
-     * @param ctx The context of execution
+
-     * @param frame The code frame which was popped out
+    /**
-     */
+     * Called immediatly before a frame has been pushed on the frame stack.
-    void onFramePop(Context ctx, CodeFrame frame);
+     * This function might pause in order to await debugging commands.
-}
+     * @param ctx The context of execution
+     * @param frame The code frame which was pushed
+     */
+    void onFramePush(Context ctx, CodeFrame frame);
+    /**
+     * Called immediatly after a frame has been popped out of the frame stack.
+     * This function might pause in order to await debugging commands.
+     * @param ctx The context of execution
+     * @param frame The code frame which was popped out
+     */
+    void onFramePop(Context ctx, CodeFrame frame);
+}

src/me/topchetoeu/jscript/engine/debug/DebugHandler.java

@@ -1,35 +1,34 @@
-package me.topchetoeu.jscript.engine.debug;
+package me.topchetoeu.jscript.engine.debug;
-
+
-public interface DebugHandler {
+public interface DebugHandler {
-    void enable(V8Message msg);
+    void enable(V8Message msg);
-    void disable(V8Message msg);
+    void disable(V8Message msg);
-
+
-    void setBreakpoint(V8Message msg);
+    void setBreakpointByUrl(V8Message msg);
-    void setBreakpointByUrl(V8Message msg);
+    void removeBreakpoint(V8Message msg);
-    void removeBreakpoint(V8Message msg);
+    void continueToLocation(V8Message msg);
-    void continueToLocation(V8Message msg);
+
-
+    void getScriptSource(V8Message msg);
-    void getScriptSource(V8Message msg);
+    void getPossibleBreakpoints(V8Message msg);
-    void getPossibleBreakpoints(V8Message msg);
+
-
+    void resume(V8Message msg);
-    void resume(V8Message msg);
+    void pause(V8Message msg);
-    void pause(V8Message msg);
+
-
+    void stepInto(V8Message msg);
-    void stepInto(V8Message msg);
+    void stepOut(V8Message msg);
-    void stepOut(V8Message msg);
+    void stepOver(V8Message msg);
-    void stepOver(V8Message msg);
+
-
+    void setPauseOnExceptions(V8Message msg);
-    void setPauseOnExceptions(V8Message msg);
+
-
+    void evaluateOnCallFrame(V8Message msg);
-    void evaluateOnCallFrame(V8Message msg);
+
-
+    void getProperties(V8Message msg);
-    void getProperties(V8Message msg);
+    void releaseObjectGroup(V8Message msg);
-    void releaseObjectGroup(V8Message msg);
+    void releaseObject(V8Message msg);
-    void releaseObject(V8Message msg);
+    /**
-    /**
+     * This method might not execute the actual code for well-known requests
-     * This method might not execute the actual code for well-known requests
+     */
-     */
+    void callFunctionOn(V8Message msg);
-    void callFunctionOn(V8Message msg);
+
-
+    void runtimeEnable(V8Message msg);
-    void runtimeEnable(V8Message msg);
+}
-}

src/me/topchetoeu/jscript/engine/debug/DebugServer.java

@@ -1,246 +1,245 @@
-package me.topchetoeu.jscript.engine.debug;
+package me.topchetoeu.jscript.engine.debug;
-
+
-import java.io.IOException;
+import java.io.IOException;
-import java.net.InetSocketAddress;
+import java.net.InetSocketAddress;
-import java.net.ServerSocket;
+import java.net.ServerSocket;
-import java.net.Socket;
+import java.net.Socket;
-import java.security.MessageDigest;
+import java.security.MessageDigest;
-import java.util.Base64;
+import java.util.Base64;
-import java.util.HashMap;
+import java.util.HashMap;
-
+
-import me.topchetoeu.jscript.Metadata;
+import me.topchetoeu.jscript.Metadata;
-import me.topchetoeu.jscript.Reading;
+import me.topchetoeu.jscript.Reading;
-import me.topchetoeu.jscript.engine.debug.WebSocketMessage.Type;
+import me.topchetoeu.jscript.engine.debug.WebSocketMessage.Type;
-import me.topchetoeu.jscript.events.Notifier;
+import me.topchetoeu.jscript.events.Notifier;
-import me.topchetoeu.jscript.exceptions.SyntaxException;
+import me.topchetoeu.jscript.exceptions.SyntaxException;
-import me.topchetoeu.jscript.exceptions.UncheckedException;
+import me.topchetoeu.jscript.exceptions.UncheckedException;
-import me.topchetoeu.jscript.exceptions.UncheckedIOException;
+import me.topchetoeu.jscript.exceptions.UncheckedIOException;
-import me.topchetoeu.jscript.json.JSON;
+import me.topchetoeu.jscript.json.JSON;
-import me.topchetoeu.jscript.json.JSONList;
+import me.topchetoeu.jscript.json.JSONList;
-import me.topchetoeu.jscript.json.JSONMap;
+import me.topchetoeu.jscript.json.JSONMap;
-
+
-public class DebugServer {
+public class DebugServer {
-    public static String browserDisplayName = Metadata.name() + "/" + Metadata.version();
+    public static String browserDisplayName = Metadata.name() + "/" + Metadata.version();
-
+
-    public final HashMap<String, DebuggerProvider> targets = new HashMap<>();
+    public final HashMap<String, DebuggerProvider> targets = new HashMap<>();
-
+
-    private final byte[] favicon, index, protocol;
+    private final byte[] favicon, index, protocol;
-    private final Notifier connNotifier = new Notifier();
+    private final Notifier connNotifier = new Notifier();
-
+
-    private static void send(HttpRequest req, String val) throws IOException {
+    private static void send(HttpRequest req, String val) throws IOException {
-        req.writeResponse(200, "OK", "application/json", val.getBytes());
+        req.writeResponse(200, "OK", "application/json", val.getBytes());
-    }
+    }
-
+
-    // SILENCE JAVA
+    // SILENCE JAVA
-    private MessageDigest getDigestInstance() {
+    private MessageDigest getDigestInstance() {
-        try {
+        try {
-            return MessageDigest.getInstance("sha1");
+            return MessageDigest.getInstance("sha1");
-        }
+        }
-        catch (Throwable e) { throw new UncheckedException(e); }
+        catch (Throwable e) { throw new UncheckedException(e); }
-
+
-    }
+    }
-
+
-    private static Thread runAsync(Runnable func, String name) {
+    private static Thread runAsync(Runnable func, String name) {
-        var res = new Thread(func);
+        var res = new Thread(func);
-        res.setName(name);
+        res.setName(name);
-        res.start();
+        res.start();
-        return res;
+        return res;
-    }
+    }
-
+
-    private void handle(WebSocket ws, Debugger debugger) {
+    private void handle(WebSocket ws, Debugger debugger) {
-        WebSocketMessage raw;
+        WebSocketMessage raw;
-
+
-        debugger.connect();
+        debugger.connect();
-
+
-        while ((raw = ws.receive()) != null) {
+        while ((raw = ws.receive()) != null) {
-            if (raw.type != Type.Text) {
+            if (raw.type != Type.Text) {
-                ws.send(new V8Error("Expected a text message."));
+                ws.send(new V8Error("Expected a text message."));
-                continue;
+                continue;
-            }
+            }
-
+
-            V8Message msg;
+            V8Message msg;
-
+
-            try {
+            try {
-                msg = new V8Message(raw.textData());
+                msg = new V8Message(raw.textData());
-            }
+            }
-            catch (SyntaxException e) {
+            catch (SyntaxException e) {
-                ws.send(new V8Error(e.getMessage()));
+                ws.send(new V8Error(e.getMessage()));
-                return;
+                return;
-            }
+            }
-
+
-            try {
+            try {
-                switch (msg.name) {
+                switch (msg.name) {
-                    case "Debugger.enable":
+                    case "Debugger.enable":
-                        connNotifier.next();
+                        connNotifier.next();
-                        debugger.enable(msg); continue;
+                        debugger.enable(msg); continue;
-                    case "Debugger.disable": debugger.disable(msg); continue;
+                    case "Debugger.disable": debugger.disable(msg); continue;
-
+
-                    case "Debugger.setBreakpoint": debugger.setBreakpoint(msg); continue;
+                    case "Debugger.setBreakpointByUrl": debugger.setBreakpointByUrl(msg); continue;
-                    case "Debugger.setBreakpointByUrl": debugger.setBreakpointByUrl(msg); continue;
+                    case "Debugger.removeBreakpoint": debugger.removeBreakpoint(msg); continue;
-                    case "Debugger.removeBreakpoint": debugger.removeBreakpoint(msg); continue;
+                    case "Debugger.continueToLocation": debugger.continueToLocation(msg); continue;
-                    case "Debugger.continueToLocation": debugger.continueToLocation(msg); continue;
+
-
+                    case "Debugger.getScriptSource": debugger.getScriptSource(msg); continue;
-                    case "Debugger.getScriptSource": debugger.getScriptSource(msg); continue;
+                    case "Debugger.getPossibleBreakpoints": debugger.getPossibleBreakpoints(msg); continue;
-                    case "Debugger.getPossibleBreakpoints": debugger.getPossibleBreakpoints(msg); continue;
+
-
+                    case "Debugger.resume": debugger.resume(msg); continue;
-                    case "Debugger.resume": debugger.resume(msg); continue;
+                    case "Debugger.pause": debugger.pause(msg); continue;
-                    case "Debugger.pause": debugger.pause(msg); continue;
+
-
+                    case "Debugger.stepInto": debugger.stepInto(msg); continue;
-                    case "Debugger.stepInto": debugger.stepInto(msg); continue;
+                    case "Debugger.stepOut": debugger.stepOut(msg); continue;
-                    case "Debugger.stepOut": debugger.stepOut(msg); continue;
+                    case "Debugger.stepOver": debugger.stepOver(msg); continue;
-                    case "Debugger.stepOver": debugger.stepOver(msg); continue;
+
-
+                    case "Debugger.setPauseOnExceptions": debugger.setPauseOnExceptions(msg); continue;
-                    case "Debugger.setPauseOnExceptions": debugger.setPauseOnExceptions(msg); continue;
+                    case "Debugger.evaluateOnCallFrame": debugger.evaluateOnCallFrame(msg); continue;
-                    case "Debugger.evaluateOnCallFrame": debugger.evaluateOnCallFrame(msg); continue;
+
-
+                    case "Runtime.releaseObjectGroup": debugger.releaseObjectGroup(msg); continue;
-                    case "Runtime.releaseObjectGroup": debugger.releaseObjectGroup(msg); continue;
+                    case "Runtime.releaseObject": debugger.releaseObject(msg); continue;
-                    case "Runtime.releaseObject": debugger.releaseObject(msg); continue;
+                    case "Runtime.getProperties": debugger.getProperties(msg); continue;
-                    case "Runtime.getProperties": debugger.getProperties(msg); continue;
+                    case "Runtime.callFunctionOn": debugger.callFunctionOn(msg); continue;
-                    case "Runtime.callFunctionOn": debugger.callFunctionOn(msg); continue;
+                    // case "NodeWorker.enable": debugger.nodeWorkerEnable(msg); continue;
-                    // case "NodeWorker.enable": debugger.nodeWorkerEnable(msg); continue;
+                    case "Runtime.enable": debugger.runtimeEnable(msg); continue;
-                    case "Runtime.enable": debugger.runtimeEnable(msg); continue;
+                }
-                }
+
-
+                if (
-                if (
+                    msg.name.startsWith("DOM.") ||
-                    msg.name.startsWith("DOM.") ||
+                    msg.name.startsWith("DOMDebugger.") ||
-                    msg.name.startsWith("DOMDebugger.") ||
+                    msg.name.startsWith("Emulation.") ||
-                    msg.name.startsWith("Emulation.") ||
+                    msg.name.startsWith("Input.") ||
-                    msg.name.startsWith("Input.") ||
+                    msg.name.startsWith("Network.") ||
-                    msg.name.startsWith("Network.") ||
+                    msg.name.startsWith("Page.")
-                    msg.name.startsWith("Page.")
+                ) ws.send(new V8Error("This isn't a browser..."));
-                ) ws.send(new V8Error("This isn't a browser..."));
+                else ws.send(new V8Error("This API is not supported yet."));
-                else ws.send(new V8Error("This API is not supported yet."));
+            }
-            }
+            catch (Throwable e) {
-            catch (Throwable e) {
+                e.printStackTrace();
-                e.printStackTrace();
+                throw new UncheckedException(e);
-                throw new UncheckedException(e);
+            }
-            }
+        }
-        }
+
-
+        debugger.disconnect();
-        debugger.disconnect();
+    }
-    }
+    private void onWsConnect(HttpRequest req, Socket socket, DebuggerProvider debuggerProvider) {
-    private void onWsConnect(HttpRequest req, Socket socket, DebuggerProvider debuggerProvider) {
+        var key = req.headers.get("sec-websocket-key");
-        var key = req.headers.get("sec-websocket-key");
+
-
+        if (key == null) {
-        if (key == null) {
+            req.writeResponse(
-            req.writeResponse(
+                426, "Upgrade Required", "text/txt",
-                426, "Upgrade Required", "text/txt",
+                "Expected a WS upgrade".getBytes()
-                "Expected a WS upgrade".getBytes()
+            );
-            );
+            return;
-            return;
+        }
-        }
+
-
+        var resKey = Base64.getEncoder().encodeToString(getDigestInstance().digest(
-        var resKey = Base64.getEncoder().encodeToString(getDigestInstance().digest(
+            (key + "258EAFA5-E914-47DA-95CA-C5AB0DC85B11").getBytes()
-            (key + "258EAFA5-E914-47DA-95CA-C5AB0DC85B11").getBytes()
+        ));
-        ));
+
-
+        req.writeCode(101, "Switching Protocols");
-        req.writeCode(101, "Switching Protocols");
+        req.writeHeader("Connection", "Upgrade");
-        req.writeHeader("Connection", "Upgrade");
+        req.writeHeader("Sec-WebSocket-Accept", resKey);
-        req.writeHeader("Sec-WebSocket-Accept", resKey);
+        req.writeLastHeader("Upgrade", "WebSocket");
-        req.writeLastHeader("Upgrade", "WebSocket");
+
-
+        var ws = new WebSocket(socket);
-        var ws = new WebSocket(socket);
+        var debugger = debuggerProvider.getDebugger(ws, req);
-        var debugger = debuggerProvider.getDebugger(ws, req);
+
-
+        if (debugger == null) {
-        if (debugger == null) {
+            ws.close();
-            ws.close();
+            return;
-            return;
+        }
-        }
+
-
+        runAsync(() -> {
-        runAsync(() -> {
+            try { handle(ws, debugger); }
-            try { handle(ws, debugger); }
+            catch (RuntimeException e) {
-            catch (RuntimeException e) {
+                ws.send(new V8Error(e.getMessage()));
-                ws.send(new V8Error(e.getMessage()));
+            }
-            }
+            finally { ws.close(); debugger.disconnect(); }
-            finally { ws.close(); debugger.disconnect(); }
+        }, "Debug Handler");
-        }, "Debug Handler");
+    }
-    }
+
-
+    public void awaitConnection() {
-    public void awaitConnection() {
+        connNotifier.await();
-        connNotifier.await();
+    }
-    }
+
-
+    public void run(InetSocketAddress address) {
-    public void run(InetSocketAddress address) {
+        try {
-        try {
+            ServerSocket server = new ServerSocket();
-            ServerSocket server = new ServerSocket();
+            server.bind(address);
-            server.bind(address);
+
-
+            try {
-            try {
+                while (true) {
-                while (true) {
+                    var socket = server.accept();
-                    var socket = server.accept();
+                    var req = HttpRequest.read(socket);
-                    var req = HttpRequest.read(socket);
+
-
+                    if (req == null) continue;
-                    if (req == null) continue;
+    
-    
+                    switch (req.path) {
-                    switch (req.path) {
+                        case "/json/version":
-                        case "/json/version":
+                            send(req, "{\"Browser\":\"" + browserDisplayName + "\",\"Protocol-Version\":\"1.1\"}");
-                            send(req, "{\"Browser\":\"" + browserDisplayName + "\",\"Protocol-Version\":\"1.1\"}");
+                            break;
-                            break;
+                        case "/json/list":
-                        case "/json/list":
+                        case "/json": {
-                        case "/json": {
+                            var res = new JSONList();
-                            var res = new JSONList();
+
-
+                            for (var el : targets.entrySet()) {
-                            for (var el : targets.entrySet()) {
+                                res.add(new JSONMap()
-                                res.add(new JSONMap()
+                                    .set("description", "JScript debugger")
-                                    .set("description", "JScript debugger")
+                                    .set("favicon", "/favicon.ico")
-                                    .set("favicon", "/favicon.ico")
+                                    .set("id", el.getKey())
-                                    .set("id", el.getKey())
+                                    .set("type", "node")
-                                    .set("type", "node")
+                                    .set("webSocketDebuggerUrl", "ws://" + address.getHostString() + ":" + address.getPort() + "/" + el.getKey())
-                                    .set("webSocketDebuggerUrl", "ws://" + address.getHostString() + ":" + address.getPort() + "/" + el.getKey())
+                                );
-                                );
+                            }
-                            }
+                            send(req, JSON.stringify(res));
-                            send(req, JSON.stringify(res));
+                            break;
-                            break;
+                        }
-                        }
+                        case "/json/protocol":
-                        case "/json/protocol":
+                            req.writeResponse(200, "OK", "application/json", protocol);
-                            req.writeResponse(200, "OK", "application/json", protocol);
+                            break;
-                            break;
+                        case "/json/new":
-                        case "/json/new":
+                        case "/json/activate":
-                        case "/json/activate":
+                        case "/json/close":
-                        case "/json/close":
+                        case "/devtools/inspector.html":
-                        case "/devtools/inspector.html":
+                            req.writeResponse(
-                            req.writeResponse(
+                                501, "Not Implemented", "text/txt",
-                                501, "Not Implemented", "text/txt",
+                                "This feature isn't (and probably won't be) implemented.".getBytes()
-                                "This feature isn't (and probably won't be) implemented.".getBytes()
+                            );
-                            );
+                            break;
-                            break;
+                        case "/":
-                        case "/":
+                        case "/index.html":
-                        case "/index.html":
+                            req.writeResponse(200, "OK", "text/html", index);
-                            req.writeResponse(200, "OK", "text/html", index);
+                            break;
-                            break;
+                        case "/favicon.ico":
-                        case "/favicon.ico":
+                            req.writeResponse(200, "OK", "image/png", favicon);
-                            req.writeResponse(200, "OK", "image/png", favicon);
+                            break;
-                            break;
+                        default:
-                        default:
+                            if (req.path.length() > 1 && targets.containsKey(req.path.substring(1))) {
-                            if (req.path.length() > 1 && targets.containsKey(req.path.substring(1))) {
+                                onWsConnect(req, socket, targets.get(req.path.substring(1)));
-                                onWsConnect(req, socket, targets.get(req.path.substring(1)));
+                            }
-                            }
+                            break;
-                            break;
+                    }
-                    }
+                }
-                }
+            }
-            }
+            finally { server.close(); }
-            finally { server.close(); }
+        }
-        }
+        catch (IOException e) { throw new UncheckedIOException(e); }
-        catch (IOException e) { throw new UncheckedIOException(e); }
+    }
-    }
+
-
+    public Thread start(InetSocketAddress address, boolean daemon) {
-    public Thread start(InetSocketAddress address, boolean daemon) {
+        var res = new Thread(() -> run(address), "Debug Server");
-        var res = new Thread(() -> run(address), "Debug Server");
+        res.setDaemon(daemon);
-        res.setDaemon(daemon);
+        res.start();
-        res.start();
+        return res;
-        return res;
+    }
-    }
+
-
+    public DebugServer() {
-    public DebugServer() {
+        try {
-        try {
+            this.favicon = Reading.resourceToStream("debugger/favicon.png").readAllBytes();
-            this.favicon = Reading.resourceToStream("debugger/favicon.png").readAllBytes();
+            this.protocol = Reading.resourceToStream("debugger/protocol.json").readAllBytes();
-            this.protocol = Reading.resourceToStream("debugger/protocol.json").readAllBytes();
+            this.index = Reading.resourceToString("debugger/index.html")
-            this.index = Reading.resourceToString("debugger/index.html")
+                .replace("${NAME}", Metadata.name())
-                .replace("${NAME}", Metadata.name())
+                .replace("${VERSION}", Metadata.version())
-                .replace("${VERSION}", Metadata.version())
+                .replace("${AUTHOR}", Metadata.author())
-                .replace("${AUTHOR}", Metadata.author())
+                .getBytes();
-                .getBytes();
+        }
-        }
+        catch (IOException e) { throw new UncheckedIOException(e); }
-        catch (IOException e) { throw new UncheckedIOException(e); }
+    }
-    }
+}
-}

src/me/topchetoeu/jscript/engine/frame/CodeFrame.java

@@ -17,32 +17,72 @@ import me.topchetoeu.jscript.exceptions.EngineException;
 import me.topchetoeu.jscript.exceptions.InterruptException;
 
 public class CodeFrame {
+    public static enum TryState {
+        TRY,
+        CATCH,
+        FINALLY,
+    }
+
     public static class TryCtx {
-        public static final int STATE_TRY = 0;
+        public final int start, end, catchStart, finallyStart;
-        public static final int STATE_CATCH = 1;
+        public final int restoreStackPtr;
-        public static final int STATE_FINALLY_THREW = 2;
+        public final TryState state;
-        public static final int STATE_FINALLY_RETURNED = 3;
+        public final EngineException error;
-        public static final int STATE_FINALLY_JUMPED = 4;
+        public final PendingResult result;
 
-        public final boolean hasCatch, hasFinally;
+        public boolean hasCatch() { return catchStart >= 0; }
-        public final int tryStart, catchStart, finallyStart, end;
+        public boolean hasFinally() { return finallyStart >= 0; }
-        public int state;
-        public Object retVal;
-        public EngineException err;
-        public int jumpPtr;
 
-        public TryCtx(int tryStart, int tryN, int catchN, int finallyN) {
+        public boolean inBounds(int ptr) {
-            hasCatch = catchN >= 0;
+            return ptr >= start && ptr < end;
-            hasFinally = finallyN >= 0;
+        }
 
-            if (catchN < 0) catchN = 0;
+        public TryCtx _catch(EngineException e) {
-            if (finallyN < 0) finallyN = 0;
+            e.setCause(error);
+            return new TryCtx(TryState.CATCH, e, result, restoreStackPtr, start, end, -1, finallyStart);
+        }
+        public TryCtx _finally(PendingResult res) {
+            return new TryCtx(TryState.FINALLY, error, res, restoreStackPtr, start, end, -1, -1);
+        }
 
-            this.tryStart = tryStart;
+        public TryCtx(TryState state, EngineException err, PendingResult res, int stackPtr, int start, int end, int catchStart, int finallyStart) {
-            this.catchStart = tryStart + tryN;
+            this.catchStart = catchStart;
-            this.finallyStart = catchStart + catchN;
+            this.finallyStart = finallyStart;
-            this.end = finallyStart + finallyN;
+            this.restoreStackPtr = stackPtr;
-            this.jumpPtr = end;
+            this.result = res == null ? PendingResult.ofNone() : res;
+            this.state = state;
+            this.start = start;
+            this.end = end;
+            this.error = err;
+        }
+    }
+
+    private static class PendingResult {
+        public final boolean isReturn, isJump, isThrow;
+        public final Object value;
+        public final EngineException error;
+        public final int ptr;
+
+        private PendingResult(boolean isReturn, boolean isJump, boolean isThrow, Object value, EngineException error, int ptr) {
+            this.isReturn = isReturn;
+            this.isJump = isJump;
+            this.isThrow = isThrow;
+            this.value = value;
+            this.error = error;
+            this.ptr = ptr;
+        }
+
+        public static PendingResult ofNone() {
+            return new PendingResult(false, false, false, null, null, 0);
+        }
+        public static PendingResult ofReturn(Object value) {
+            return new PendingResult(true, false, false, value, null, 0);
+        }
+        public static PendingResult ofThrow(EngineException error) {
+            return new PendingResult(false, false, true, null, error, 0);
+        }
+        public static PendingResult ofJump(int codePtr) {
+            return new PendingResult(false, true, false, null, null, codePtr);
         }
     }
 
@@ -51,11 +91,10 @@ public class CodeFrame {
     public final Object[] args;
     public final Stack<TryCtx> tryStack = new Stack<>();
     public final CodeFunction function;
-
     public Object[] stack = new Object[32];
     public int stackPtr = 0;
     public int codePtr = 0;
-    public boolean jumpFlag = false;
+    public boolean jumpFlag = false, popTryFlag = false;
     private Location prevLoc = null;
 
     public ObjectValue getLocalScope(Context ctx, boolean props) {
@@ -105,9 +144,9 @@ public class CodeFrame {
         };
     }
 
-    public void addTry(int n, int catchN, int finallyN) {
+    public void addTry(int start, int end, int catchStart, int finallyStart) {
-        var res = new TryCtx(codePtr + 1, n, catchN, finallyN);
+        var err = tryStack.empty() ? null : tryStack.peek().error;
-        if (!tryStack.empty()) res.err = tryStack.peek().err;
+        var res = new TryCtx(TryState.TRY, err, null, stackPtr, start, end, catchStart, finallyStart);
 
         tryStack.add(res);
     }
@@ -145,10 +184,6 @@ public class CodeFrame {
         stack[stackPtr++] = Values.normalize(ctx, val);
     }
 
-    private void setCause(Context ctx, EngineException err, EngineException cause) {
-        err.setCause(cause);
-    }
-
     public Object next(Context ctx, Object value, Object returnValue, EngineException error) {
         if (value != Runners.NO_RETURN) push(ctx, value);
 
@@ -166,7 +201,7 @@ public class CodeFrame {
                     if (instr.location != null) prevLoc = instr.location;
 
                     try {
-                        this.jumpFlag = false;
+                        this.jumpFlag = this.popTryFlag = false;
                         returnValue = Runners.exec(ctx, instr, this);
                     }
                     catch (EngineException e) {
@@ -177,111 +212,75 @@ public class CodeFrame {
             catch (EngineException e) { error = e; }
         }
 
-        while (!tryStack.empty()) {
+        if (!tryStack.empty()) {
             var tryCtx = tryStack.peek();
-            var newState = -1;
+            var pendingResult = PendingResult.ofNone();
+            boolean shouldCatch = false, shouldFinally = false, shouldExit = this.popTryFlag;
 
-            switch (tryCtx.state) {
+            if (tryCtx.state != TryState.FINALLY) {
-                case TryCtx.STATE_TRY:
+                if (error != null && tryCtx.hasCatch()) shouldCatch = true;
-                    if (error != null) {
+                else if (error != null && tryCtx.hasFinally()) {
-                        if (tryCtx.hasCatch) {
+                    pendingResult = PendingResult.ofThrow(error);
-                            tryCtx.err = error;
+                    shouldFinally = true;
-                            newState = TryCtx.STATE_CATCH;
+                }
-                        }
+                else if (returnValue != Runners.NO_RETURN && tryCtx.hasFinally()) {
-                        else if (tryCtx.hasFinally) {
+                    pendingResult = PendingResult.ofReturn(returnValue);
-                            tryCtx.err = error;
+                    shouldFinally = true;
-                            newState = TryCtx.STATE_FINALLY_THREW;
+                }
-                        }
+                else if (jumpFlag && !tryCtx.inBounds(codePtr) && tryCtx.hasFinally()) {
-                        break;
+                    pendingResult = PendingResult.ofJump(codePtr);
-                    }
+                    shouldFinally = true;
-                    else if (returnValue != Runners.NO_RETURN) {
+                }
-                        if (tryCtx.hasFinally) {
-                            tryCtx.retVal = returnValue;
-                            newState = TryCtx.STATE_FINALLY_RETURNED;
-                        }
-                        break;
-                    }
-                    else if (codePtr >= tryCtx.tryStart && codePtr < tryCtx.catchStart) return Runners.NO_RETURN;
-
-                    if (tryCtx.hasFinally) {
-                        if (jumpFlag) tryCtx.jumpPtr = codePtr;
-                        else tryCtx.jumpPtr = tryCtx.end;
-                        newState = TryCtx.STATE_FINALLY_JUMPED;
-                    }
-                    else codePtr = tryCtx.end;
-                    break;
-                case TryCtx.STATE_CATCH:
-                    if (error != null) {
-                        setCause(ctx, error, tryCtx.err);
-                        if (tryCtx.hasFinally) {
-                            tryCtx.err = error;
-                            newState = TryCtx.STATE_FINALLY_THREW;
-                        }
-                        break;
-                    }
-                    else if (returnValue != Runners.NO_RETURN) {
-                        if (tryCtx.hasFinally) {
-                            tryCtx.retVal = returnValue;
-                            newState = TryCtx.STATE_FINALLY_RETURNED;
-                        }
-                        break;
-                    }
-                    else if (codePtr >= tryCtx.catchStart && codePtr < tryCtx.finallyStart) return Runners.NO_RETURN;
-
-                    if (tryCtx.hasFinally) {
-                        if (jumpFlag) tryCtx.jumpPtr = codePtr;
-                        else tryCtx.jumpPtr = tryCtx.end;
-                        newState = TryCtx.STATE_FINALLY_JUMPED;
-                    }
-                    else codePtr = tryCtx.end;
-                    break;
-                case TryCtx.STATE_FINALLY_THREW:
-                    if (error != null) setCause(ctx, error, tryCtx.err);
-                    else if (codePtr < tryCtx.finallyStart || codePtr >= tryCtx.end) error = tryCtx.err;
-                    else if (returnValue == Runners.NO_RETURN) return Runners.NO_RETURN;
-                    break;
-                case TryCtx.STATE_FINALLY_RETURNED:
-                    if (error != null) setCause(ctx, error, tryCtx.err);
-                    if (returnValue == Runners.NO_RETURN) {
-                        if (codePtr < tryCtx.finallyStart || codePtr >= tryCtx.end) returnValue = tryCtx.retVal;
-                        else return Runners.NO_RETURN;
-                    }
-                    break;
-                case TryCtx.STATE_FINALLY_JUMPED:
-                    if (error != null) setCause(ctx, error, tryCtx.err);
-                    else if (codePtr < tryCtx.finallyStart || codePtr >= tryCtx.end) {
-                        if (!jumpFlag) codePtr = tryCtx.jumpPtr;
-                        else codePtr = tryCtx.end;
-                    }
-                    else if (returnValue == Runners.NO_RETURN) return Runners.NO_RETURN;
-                    break;
             }
 
-            if (tryCtx.state == TryCtx.STATE_CATCH) scope.catchVars.remove(scope.catchVars.size() - 1);
+            if (tryCtx.hasCatch() && shouldCatch) {
+                if (tryCtx.state != TryState.CATCH) scope.catchVars.add(new ValueVariable(false, error.value));
 
-            if (newState == -1) {
+                codePtr = tryCtx.catchStart;
-                var err = tryCtx.err;
+                stackPtr = tryCtx.restoreStackPtr;
                 tryStack.pop();
-                if (!tryStack.isEmpty()) tryStack.peek().err = err;
+                tryStack.push(tryCtx._catch(error));
-                continue;
+                error = null;
+                returnValue = Runners.NO_RETURN;
             }
+            else if (tryCtx.hasFinally() && shouldFinally) {
+                if (tryCtx.state == TryState.CATCH) scope.catchVars.remove(scope.catchVars.size() - 1);
 
-            tryCtx.state = newState;
+                codePtr = tryCtx.finallyStart;
-            switch (newState) {
+                stackPtr = tryCtx.restoreStackPtr;
-                case TryCtx.STATE_CATCH:
+                tryStack.pop();
-                    scope.catchVars.add(new ValueVariable(false, tryCtx.err.value));
+                tryStack.push(tryCtx._finally(pendingResult));
-                    codePtr = tryCtx.catchStart;
+                error = null;
-                    ctx.engine.onInstruction(ctx, this, function.body[codePtr], null, error, true);
+                returnValue = Runners.NO_RETURN;
-                    break;
+            }
-                default:
+            else if (shouldExit) {
+                if (tryCtx.state == TryState.CATCH) scope.catchVars.remove(scope.catchVars.size() - 1);
+
+                if (tryCtx.state != TryState.FINALLY && tryCtx.hasFinally()) {
                     codePtr = tryCtx.finallyStart;
+                    stackPtr = tryCtx.restoreStackPtr;
+                    tryStack.pop();
+                    tryStack.push(tryCtx._finally(null));
+                }
+                else {
+                    codePtr = tryCtx.end;
+                    if (tryCtx.result.isJump) codePtr = tryCtx.result.ptr;
+                    if (tryCtx.result.isReturn) returnValue = tryCtx.result.value;
+                    if (tryCtx.result.isThrow) error = tryCtx.result.error;
+                }
             }
-
-            return Runners.NO_RETURN;
         }
 
         if (error != null) {
-            ctx.engine.onInstruction(ctx, this, instr, null, error, false);
+            var caught = false;
+
+            for (var frame : ctx.frames()) {
+                for (var tryCtx : frame.tryStack) {
+                    if (tryCtx.state == TryState.TRY) caught = true;
+                }
+            }
+
+            ctx.engine.onInstruction(ctx, this, instr, null, error, caught);
             throw error;
         }
         if (returnValue != Runners.NO_RETURN) {

src/me/topchetoeu/jscript/engine/frame/Runners.java

@@ -97,27 +97,26 @@ public class Runners {
             obj.defineProperty(ctx, "value", el);
             frame.push(ctx, obj);
         }
-        // var arr = new ObjectValue();
 
-        // var members = Values.getMembers(ctx, val, false, false);
-        // Collections.reverse(members);
-        // for (var el : members) {
-        //     if (el instanceof Symbol) continue;
-        //     arr.defineProperty(ctx, i++, el);
-        // }
-
-        // arr.defineProperty(ctx, "length", i);
-
-        // frame.push(ctx, arr);
         frame.codePtr++;
         return NO_RETURN;
     }
 
-    public static Object execTry(Context ctx, Instruction instr, CodeFrame frame) {
+    public static Object execTryStart(Context ctx, Instruction instr, CodeFrame frame) {
-        frame.addTry(instr.get(0), instr.get(1), instr.get(2));
+        int start = frame.codePtr + 1;
+        int catchStart = (int)instr.get(0);
+        int finallyStart = (int)instr.get(1);
+        if (finallyStart >= 0) finallyStart += start;
+        if (catchStart >= 0) catchStart += start;
+        int end = (int)instr.get(2) + start;
+        frame.addTry(start, end, catchStart, finallyStart);
         frame.codePtr++;
         return NO_RETURN;
     }
+    public static Object execTryEnd(Context ctx, Instruction instr, CodeFrame frame) {
+        frame.popTryFlag = true;
+        return NO_RETURN;
+    }
 
     public static Object execDup(Context ctx, Instruction instr, CodeFrame frame) {
         int offset = instr.get(0), count = instr.get(1);
@@ -326,7 +325,8 @@ public class Runners {
             case THROW_SYNTAX: return execThrowSyntax(ctx, instr, frame);
             case CALL: return execCall(ctx, instr, frame);
             case CALL_NEW: return execCallNew(ctx, instr, frame);
-            case TRY: return execTry(ctx, instr, frame);
+            case TRY_START: return execTryStart(ctx, instr, frame);
+            case TRY_END: return execTryEnd(ctx, instr, frame);
 
             case DUP: return execDup(ctx, instr, frame);
             case MOVE: return execMove(ctx, instr, frame);

src/me/topchetoeu/jscript/engine/scope/GlobalScope.java

@@ -12,9 +12,6 @@ import me.topchetoeu.jscript.exceptions.EngineException;
 public class GlobalScope implements ScopeRecord {
     public final ObjectValue obj;
 
-    @Override
-    public GlobalScope parent() { return null; }
-
     public boolean has(Context ctx, String name) {
         return obj.hasMember(ctx, name, false);
     }
@@ -28,7 +25,7 @@ public class GlobalScope implements ScopeRecord {
         return new GlobalScope(obj);
     }
     public LocalScopeRecord child() {
-        return new LocalScopeRecord(this);
+        return new LocalScopeRecord();
     }
 
     public Object define(String name) {

src/me/topchetoeu/jscript/engine/scope/LocalScopeRecord.java

@@ -2,11 +2,8 @@ package me.topchetoeu.jscript.engine.scope;
 
 import java.util.ArrayList;
 
-import me.topchetoeu.jscript.engine.Context;
-
 public class LocalScopeRecord implements ScopeRecord {
     public final LocalScopeRecord parent;
-    public final GlobalScope global;
 
     private final ArrayList<String> captures = new ArrayList<>();
     private final ArrayList<String> locals = new ArrayList<>();
@@ -18,11 +15,8 @@ public class LocalScopeRecord implements ScopeRecord {
         return locals.toArray(String[]::new);
     }
 
-    @Override
-    public LocalScopeRecord parent() { return parent; }
-
     public LocalScopeRecord child() {
-        return new LocalScopeRecord(this, global);
+        return new LocalScopeRecord(this);
     }
 
     public int localsCount() {
@@ -62,12 +56,6 @@ public class LocalScopeRecord implements ScopeRecord {
 
         return name;
     }
-    public boolean has(Context ctx, String name) {
-        return
-            global.has(ctx, name) ||
-            locals.contains(name) ||
-            parent != null && parent.has(ctx, name);
-    }
     public Object define(String name, boolean force) {
         if (!force && locals.contains(name)) return locals.indexOf(name);
         locals.add(name);
@@ -80,12 +68,10 @@ public class LocalScopeRecord implements ScopeRecord {
         locals.remove(locals.size() - 1);
     }
 
-    public LocalScopeRecord(GlobalScope global) {
+    public LocalScopeRecord() {
         this.parent = null;
-        this.global = global;
     }
-    public LocalScopeRecord(LocalScopeRecord parent, GlobalScope global) {
+    public LocalScopeRecord(LocalScopeRecord parent) {
         this.parent = parent;
-        this.global = global;
     }
 }

src/me/topchetoeu/jscript/engine/scope/ScopeRecord.java

@@ -3,6 +3,5 @@ package me.topchetoeu.jscript.engine.scope;
 public interface ScopeRecord {
     public Object getKey(String name);
     public Object define(String name);
-    public ScopeRecord parent();
     public LocalScopeRecord child();
 }

src/me/topchetoeu/jscript/engine/values/ScopeValue.java

@@ -1,51 +1,54 @@
-package me.topchetoeu.jscript.engine.values;
+package me.topchetoeu.jscript.engine.values;
-
+
-import java.util.HashMap;
+import java.util.HashMap;
-import java.util.List;
+import java.util.List;
-
+
-import me.topchetoeu.jscript.engine.Context;
+import me.topchetoeu.jscript.engine.Context;
-import me.topchetoeu.jscript.engine.scope.ValueVariable;
+import me.topchetoeu.jscript.engine.scope.ValueVariable;
-
+
-public class ScopeValue extends ObjectValue {
+public class ScopeValue extends ObjectValue {
-    public final ValueVariable[] variables;
+    public final ValueVariable[] variables;
-    public final HashMap<String, Integer> names = new HashMap<>();
+    public final HashMap<String, Integer> names = new HashMap<>();
-
+
-    @Override
+    @Override
-    protected Object getField(Context ctx, Object key) {
+    protected Object getField(Context ctx, Object key) {
-        if (names.containsKey(key)) return variables[names.get(key)].get(ctx);
+        if (names.containsKey(key)) return variables[names.get(key)].get(ctx);
-        return super.getField(ctx, key);
+        return super.getField(ctx, key);
-    }
+    }
-    @Override
+    @Override
-    protected boolean setField(Context ctx, Object key, Object val) {
+    protected boolean setField(Context ctx, Object key, Object val) {
-        if (names.containsKey(key)) {
+        if (names.containsKey(key)) {
-            variables[names.get(key)].set(ctx, val);
+            variables[names.get(key)].set(ctx, val);
-            return true;
+            return true;
-        }
+        }
-
+
-        return super.setField(ctx, key, val);
+        var proto = getPrototype(ctx);
-    }
+        if (proto != null && proto.hasField(ctx, key) && proto.setField(ctx, key, val)) return true;
-    @Override
+
-    protected void deleteField(Context ctx, Object key) {
+        return super.setField(ctx, key, val);
-        if (names.containsKey(key)) return;
+    }
-        super.deleteField(ctx, key);
+    @Override
-    }
+    protected void deleteField(Context ctx, Object key) {
-    @Override
+        if (names.containsKey(key)) return;
-    protected boolean hasField(Context ctx, Object key) {
+        super.deleteField(ctx, key);
-        if (names.containsKey(key)) return true;
+    }
-        return super.hasField(ctx, key);
+    @Override
-    }
+    protected boolean hasField(Context ctx, Object key) {
-    @Override
+        if (names.containsKey(key)) return true;
-    public List<Object> keys(boolean includeNonEnumerable) {
+        return super.hasField(ctx, key);
-        var res = super.keys(includeNonEnumerable);
+    }
-        res.addAll(names.keySet());
+    @Override
-        return res;
+    public List<Object> keys(boolean includeNonEnumerable) {
-    }
+        var res = super.keys(includeNonEnumerable);
-
+        res.addAll(names.keySet());
-    public ScopeValue(ValueVariable[] variables, String[] names) {
+        return res;
-        this.variables = variables;
+    }
-        for (var i = 0; i < names.length && i < variables.length; i++) {
+
-            this.names.put(names[i], i);
+    public ScopeValue(ValueVariable[] variables, String[] names) {
-            this.nonConfigurableSet.add(names[i]);
+        this.variables = variables;
-        }
+        for (var i = 0; i < names.length && i < variables.length; i++) {
-    }
+            this.names.put(names[i], i);
-}
+            this.nonConfigurableSet.add(names[i]);
+        }
+    }
+}

src/me/topchetoeu/jscript/filesystem/File.java

@@ -1,39 +1,41 @@
-package me.topchetoeu.jscript.filesystem;
+package me.topchetoeu.jscript.filesystem;
-
+
-public interface File {
+import me.topchetoeu.jscript.Buffer;
-    int read(byte[] buff);
+
-    void write(byte[] buff);
+public interface File {
-    long getPtr();
+    int read(byte[] buff);
-    void setPtr(long offset, int pos);
+    void write(byte[] buff);
-    void close();
+    long getPtr();
-    Mode mode();
+    void setPtr(long offset, int pos);
-
+    void close();
-    default String readToString() {
+    Mode mode();
-        setPtr(0, 2);
+
-        long len = getPtr();
+    default String readToString() {
-        if (len < 0) return null;
+        setPtr(0, 2);
-
+        long len = getPtr();
-        setPtr(0, 0);
+        if (len < 0) return null;
-
+
-        byte[] res = new byte[(int)len];
+        setPtr(0, 0);
-        read(res);
+
-
+        byte[] res = new byte[(int)len];
-        return new String(res);
+        read(res);
-    }
+
-    default String readLine() {
+        return new String(res);
-        var res = new Buffer();
+    }
-        var buff = new byte[1];
+    default String readLine() {
-
+        var res = new Buffer();
-        while (true) {
+        var buff = new byte[1];
-            if (read(buff) == 0) {
+
-                if (res.length() == 0) return null;
+        while (true) {
-                else break;
+            if (read(buff) == 0) {
-            }
+                if (res.length() == 0) return null;
-
+                else break;
-            if (buff[0] == '\n') break;
+            }
-
+
-            res.write(res.length(), buff);
+            if (buff[0] == '\n') break;
-        }
+
-        return new String(res.data());
+            res.write(res.length(), buff);
-    }
+        }
+        return new String(res.data());
+    }
 }

src/me/topchetoeu/jscript/filesystem/MemoryFile.java

@@ -1,66 +1,67 @@
-package me.topchetoeu.jscript.filesystem;
+package me.topchetoeu.jscript.filesystem;
-
+
-import me.topchetoeu.jscript.filesystem.FilesystemException.FSCode;
+import me.topchetoeu.jscript.Buffer;
-
+import me.topchetoeu.jscript.filesystem.FilesystemException.FSCode;
-public class MemoryFile implements File {
+
-    private int ptr;
+public class MemoryFile implements File {
-    private Mode mode;
+    private int ptr;
-    private Buffer data;
+    private Mode mode;
-    private String filename;
+    private Buffer data;
-
+    private String filename;
-    public Buffer data() { return data; }
+
-
+    public Buffer data() { return data; }
-    @Override
+
-    public int read(byte[] buff) {
+    @Override
-        if (data == null || !mode.readable) throw new FilesystemException(filename, FSCode.NO_PERMISSIONS_R);
+    public int read(byte[] buff) {
-        var res = data.read(ptr, buff);
+        if (data == null || !mode.readable) throw new FilesystemException(filename, FSCode.NO_PERMISSIONS_R);
-        ptr += res;
+        var res = data.read(ptr, buff);
-        return res;
+        ptr += res;
-    }
+        return res;
-    @Override
+    }
-    public void write(byte[] buff) {
+    @Override
-        if (data == null || !mode.writable) throw new FilesystemException(filename, FSCode.NO_PERMISSIONS_RW);
+    public void write(byte[] buff) {
-
+        if (data == null || !mode.writable) throw new FilesystemException(filename, FSCode.NO_PERMISSIONS_RW);
-        data.write(ptr, buff);
+
-        ptr += buff.length;
+        data.write(ptr, buff);
-    }
+        ptr += buff.length;
-
+    }
-    @Override
+
-    public long getPtr() {
+    @Override
-        if (data == null || !mode.readable) throw new FilesystemException(filename, FSCode.NO_PERMISSIONS_R);
+    public long getPtr() {
-        return ptr;
+        if (data == null || !mode.readable) throw new FilesystemException(filename, FSCode.NO_PERMISSIONS_R);
-    }
+        return ptr;
-    @Override
+    }
-    public void setPtr(long offset, int pos) {
+    @Override
-        if (data == null || !mode.readable) throw new FilesystemException(filename, FSCode.NO_PERMISSIONS_R);
+    public void setPtr(long offset, int pos) {
-
+        if (data == null || !mode.readable) throw new FilesystemException(filename, FSCode.NO_PERMISSIONS_R);
-        if (pos == 0) ptr = (int)offset;
+
-        else if (pos == 1) ptr += (int)offset;
+        if (pos == 0) ptr = (int)offset;
-        else if (pos == 2) ptr = data.length() - (int)offset;
+        else if (pos == 1) ptr += (int)offset;
-    }
+        else if (pos == 2) ptr = data.length() - (int)offset;
-
+    }
-    @Override
+
-    public void close() {
+    @Override
-        mode = Mode.NONE;
+    public void close() {
-        ptr = 0;
+        mode = Mode.NONE;
-    }
+        ptr = 0;
-    @Override
+    }
-    public Mode mode() {
+    @Override
-        if (data == null) return Mode.NONE;
+    public Mode mode() {
-        return mode;
+        if (data == null) return Mode.NONE;
-    }
+        return mode;
-
+    }
-    public MemoryFile(String filename, Buffer buff, Mode mode) {
+
-        this.filename = filename;
+    public MemoryFile(String filename, Buffer buff, Mode mode) {
-        this.data = buff;
+        this.filename = filename;
-        this.mode = mode;
+        this.data = buff;
-    }
+        this.mode = mode;
-
+    }
-    public static MemoryFile fromFileList(String filename, java.io.File[] list) {
+
-        var res = new StringBuilder();
+    public static MemoryFile fromFileList(String filename, java.io.File[] list) {
-
+        var res = new StringBuilder();
-        for (var el : list) res.append(el.getName()).append('\n');
+
-
+        for (var el : list) res.append(el.getName()).append('\n');
-        return new MemoryFile(filename, new Buffer(res.toString().getBytes()), Mode.READ);
+
-    }
+        return new MemoryFile(filename, new Buffer(res.toString().getBytes()), Mode.READ);
-}
+    }
+}

src/me/topchetoeu/jscript/filesystem/MemoryFilesystem.java

@@ -1,89 +1,90 @@
-package me.topchetoeu.jscript.filesystem;
+package me.topchetoeu.jscript.filesystem;
-
+
-import java.nio.file.Path;
+import java.nio.file.Path;
-import java.util.HashMap;
+import java.util.HashMap;
-import java.util.HashSet;
+import java.util.HashSet;
-
+
-import me.topchetoeu.jscript.filesystem.FilesystemException.FSCode;
+import me.topchetoeu.jscript.Buffer;
-
+import me.topchetoeu.jscript.filesystem.FilesystemException.FSCode;
-public class MemoryFilesystem implements Filesystem {
+
-    public final Mode mode;
+public class MemoryFilesystem implements Filesystem {
-    private HashMap<Path, Buffer> files = new HashMap<>();
+    public final Mode mode;
-    private HashSet<Path> folders = new HashSet<>();
+    private HashMap<Path, Buffer> files = new HashMap<>();
-
+    private HashSet<Path> folders = new HashSet<>();
-    private Path getPath(String name) {
+
-        return Path.of("/" + name.replace("\\", "/")).normalize();
+    private Path getPath(String name) {
-    }
+        return Path.of("/" + name.replace("\\", "/")).normalize();
-
+    }
-    @Override
+
-    public void create(String path, EntryType type) {
+    @Override
-        var _path = getPath(path);
+    public void create(String path, EntryType type) {
-
+        var _path = getPath(path);
-        switch (type) {
+
-            case FILE:
+        switch (type) {
-                if (!folders.contains(_path.getParent())) throw new FilesystemException(path, FSCode.DOESNT_EXIST);
+            case FILE:
-                if (folders.contains(_path) || files.containsKey(_path)) throw new FilesystemException(path, FSCode.ALREADY_EXISTS);
+                if (!folders.contains(_path.getParent())) throw new FilesystemException(path, FSCode.DOESNT_EXIST);
-                if (folders.contains(_path)) throw new FilesystemException(path, FSCode.ALREADY_EXISTS);
+                if (folders.contains(_path) || files.containsKey(_path)) throw new FilesystemException(path, FSCode.ALREADY_EXISTS);
-                files.put(_path, new Buffer());
+                if (folders.contains(_path)) throw new FilesystemException(path, FSCode.ALREADY_EXISTS);
-                break;
+                files.put(_path, new Buffer());
-            case FOLDER:
+                break;
-                if (!folders.contains(_path.getParent())) throw new FilesystemException(path, FSCode.DOESNT_EXIST);
+            case FOLDER:
-                if (folders.contains(_path) || files.containsKey(_path)) throw new FilesystemException(path, FSCode.ALREADY_EXISTS);
+                if (!folders.contains(_path.getParent())) throw new FilesystemException(path, FSCode.DOESNT_EXIST);
-                folders.add(_path);
+                if (folders.contains(_path) || files.containsKey(_path)) throw new FilesystemException(path, FSCode.ALREADY_EXISTS);
-                break;
+                folders.add(_path);
-            default:
+                break;
-            case NONE:
+            default:
-                if (!folders.remove(_path) && files.remove(_path) == null) throw new FilesystemException(path, FSCode.DOESNT_EXIST);
+            case NONE:
-        }
+                if (!folders.remove(_path) && files.remove(_path) == null) throw new FilesystemException(path, FSCode.DOESNT_EXIST);
-    }
+        }
-
+    }
-    @Override
+
-    public File open(String path, Mode perms) {
+    @Override
-        var _path = getPath(path);
+    public File open(String path, Mode perms) {
-        var pcount = _path.getNameCount();
+        var _path = getPath(path);
-
+        var pcount = _path.getNameCount();
-        if (files.containsKey(_path)) return new MemoryFile(path, files.get(_path), perms);
+
-        else if (folders.contains(_path)) {
+        if (files.containsKey(_path)) return new MemoryFile(path, files.get(_path), perms);
-            var res = new StringBuilder();
+        else if (folders.contains(_path)) {
-            for (var folder : folders) {
+            var res = new StringBuilder();
-                if (pcount + 1 != folder.getNameCount()) continue;
+            for (var folder : folders) {
-                if (!folder.startsWith(_path)) continue;
+                if (pcount + 1 != folder.getNameCount()) continue;
-                res.append(folder.toFile().getName()).append('\n');
+                if (!folder.startsWith(_path)) continue;
-            }
+                res.append(folder.toFile().getName()).append('\n');
-            for (var file : files.keySet()) {
+            }
-                if (pcount + 1 != file.getNameCount()) continue;
+            for (var file : files.keySet()) {
-                if (!file.startsWith(_path)) continue;
+                if (pcount + 1 != file.getNameCount()) continue;
-                res.append(file.toFile().getName()).append('\n');
+                if (!file.startsWith(_path)) continue;
-            }
+                res.append(file.toFile().getName()).append('\n');
-            return new MemoryFile(path, new Buffer(res.toString().getBytes()), perms.intersect(Mode.READ));
+            }
-        }
+            return new MemoryFile(path, new Buffer(res.toString().getBytes()), perms.intersect(Mode.READ));
-        else throw new FilesystemException(path, FSCode.DOESNT_EXIST);
+        }
-    }
+        else throw new FilesystemException(path, FSCode.DOESNT_EXIST);
-
+    }
-    @Override
+
-    public FileStat stat(String path) {
+    @Override
-        var _path = getPath(path);
+    public FileStat stat(String path) {
-
+        var _path = getPath(path);
-        if (files.containsKey(_path)) return new FileStat(mode, EntryType.FILE);
+
-        else if (folders.contains(_path)) return new FileStat(mode, EntryType.FOLDER);
+        if (files.containsKey(_path)) return new FileStat(mode, EntryType.FILE);
-        else throw new FilesystemException(path, FSCode.DOESNT_EXIST);
+        else if (folders.contains(_path)) return new FileStat(mode, EntryType.FOLDER);
-    }
+        else throw new FilesystemException(path, FSCode.DOESNT_EXIST);
-
+    }
-    public MemoryFilesystem put(String path, byte[] data) {
+
-        var _path = getPath(path);
+    public MemoryFilesystem put(String path, byte[] data) {
-        var _curr = "/";
+        var _path = getPath(path);
-
+        var _curr = "/";
-        for (var seg : _path) {
+
-            create(_curr, EntryType.FOLDER);
+        for (var seg : _path) {
-            _curr += seg + "/";
+            create(_curr, EntryType.FOLDER);
-        }
+            _curr += seg + "/";
-
+        }
-        files.put(_path, new Buffer(data));
+
-        return this;
+        files.put(_path, new Buffer(data));
-    }
+        return this;
-
+    }
-    public MemoryFilesystem(Mode mode) {
+
-        this.mode = mode;
+    public MemoryFilesystem(Mode mode) {
-        folders.add(Path.of("/"));
+        this.mode = mode;
-    }
+        folders.add(Path.of("/"));
-}
+    }
+}

src/me/topchetoeu/jscript/lib/Internals.java

@@ -1,221 +1,221 @@
-package me.topchetoeu.jscript.lib;
+package me.topchetoeu.jscript.lib;
-
+
-import java.io.IOException;
+import java.io.IOException;
-import java.util.HashMap;
+import java.util.HashMap;
-
+
-import me.topchetoeu.jscript.Reading;
+import me.topchetoeu.jscript.Buffer;
-import me.topchetoeu.jscript.engine.Context;
+import me.topchetoeu.jscript.Reading;
-import me.topchetoeu.jscript.engine.DataKey;
+import me.topchetoeu.jscript.engine.Context;
-import me.topchetoeu.jscript.engine.Environment;
+import me.topchetoeu.jscript.engine.DataKey;
-import me.topchetoeu.jscript.engine.scope.GlobalScope;
+import me.topchetoeu.jscript.engine.Environment;
-import me.topchetoeu.jscript.engine.values.FunctionValue;
+import me.topchetoeu.jscript.engine.scope.GlobalScope;
-import me.topchetoeu.jscript.engine.values.Values;
+import me.topchetoeu.jscript.engine.values.FunctionValue;
-import me.topchetoeu.jscript.exceptions.EngineException;
+import me.topchetoeu.jscript.engine.values.Values;
-import me.topchetoeu.jscript.filesystem.Buffer;
+import me.topchetoeu.jscript.exceptions.EngineException;
-import me.topchetoeu.jscript.interop.Native;
+import me.topchetoeu.jscript.interop.Native;
-import me.topchetoeu.jscript.interop.NativeGetter;
+import me.topchetoeu.jscript.interop.NativeGetter;
-import me.topchetoeu.jscript.parsing.Parsing;
+import me.topchetoeu.jscript.parsing.Parsing;
-
+
-public class Internals {
+public class Internals {
-    private static final DataKey<HashMap<Integer, Thread>> THREADS = new DataKey<>();
+    private static final DataKey<HashMap<Integer, Thread>> THREADS = new DataKey<>();
-    private static final DataKey<Integer> I = new DataKey<>();
+    private static final DataKey<Integer> I = new DataKey<>();
-
+
-
+
-    @Native public static Object log(Context ctx, Object ...args) {
+    @Native public static Object log(Context ctx, Object ...args) {
-        for (var arg : args) {
+        for (var arg : args) {
-            Values.printValue(ctx, arg);
+            Values.printValue(ctx, arg);
-            System.out.print(" ");
+            System.out.print(" ");
-        }
+        }
-        System.out.println();
+        System.out.println();
-
+
-        if (args.length == 0) return null;
+        if (args.length == 0) return null;
-        else return args[0];
+        else return args[0];
-    }
+    }
-    @Native public static String readline(Context ctx) {
+    @Native public static String readline(Context ctx) {
-        try {
+        try {
-            return Reading.read();
+            return Reading.read();
-        }
+        }
-        catch (IOException e) {
+        catch (IOException e) {
-            e.printStackTrace();
+            e.printStackTrace();
-            return null;
+            return null;
-        }
+        }
-    }
+    }
-
+
-    @Native public static int setTimeout(Context ctx, FunctionValue func, int delay, Object ...args) {
+    @Native public static int setTimeout(Context ctx, FunctionValue func, int delay, Object ...args) {
-        var thread = new Thread(() -> {
+        var thread = new Thread(() -> {
-            var ms = (long)delay;
+            var ms = (long)delay;
-            var ns = (int)((delay - ms) * 10000000);
+            var ns = (int)((delay - ms) * 10000000);
-
+
-            try {
+            try {
-                Thread.sleep(ms, ns);
+                Thread.sleep(ms, ns);
-            }
+            }
-            catch (InterruptedException e) { return; }
+            catch (InterruptedException e) { return; }
-
+
-            ctx.engine.pushMsg(false, ctx, func, null, args);
+            ctx.engine.pushMsg(false, ctx, func, null, args);
-        });
+        });
-        thread.start();
+        thread.start();
-
+
-        int i = ctx.environment().data.increase(I, 1, 0);
+        int i = ctx.environment().data.increase(I, 1, 0);
-        var threads = ctx.environment().data.get(THREADS, new HashMap<>());
+        var threads = ctx.environment().data.get(THREADS, new HashMap<>());
-        threads.put(++i, thread);
+        threads.put(++i, thread);
-        return i;
+        return i;
-    }
+    }
-    @Native public static int setInterval(Context ctx, FunctionValue func, int delay, Object ...args) {
+    @Native public static int setInterval(Context ctx, FunctionValue func, int delay, Object ...args) {
-        var thread = new Thread(() -> {
+        var thread = new Thread(() -> {
-            var ms = (long)delay;
+            var ms = (long)delay;
-            var ns = (int)((delay - ms) * 10000000);
+            var ns = (int)((delay - ms) * 10000000);
-
+
-            while (true) {
+            while (true) {
-                try {
+                try {
-                    Thread.sleep(ms, ns);
+                    Thread.sleep(ms, ns);
-                }
+                }
-                catch (InterruptedException e) { return; }
+                catch (InterruptedException e) { return; }
-    
+    
-                ctx.engine.pushMsg(false, ctx, func, null, args);
+                ctx.engine.pushMsg(false, ctx, func, null, args);
-            }
+            }
-        });
+        });
-        thread.start();
+        thread.start();
-
+
-        int i = ctx.environment().data.increase(I, 1, 0);
+        int i = ctx.environment().data.increase(I, 1, 0);
-        var threads = ctx.environment().data.get(THREADS, new HashMap<>());
+        var threads = ctx.environment().data.get(THREADS, new HashMap<>());
-        threads.put(++i, thread);
+        threads.put(++i, thread);
-        return i;
+        return i;
-    }
+    }
-
+
-    @Native public static void clearTimeout(Context ctx, int i) {
+    @Native public static void clearTimeout(Context ctx, int i) {
-        var threads = ctx.environment().data.get(THREADS, new HashMap<>());
+        var threads = ctx.environment().data.get(THREADS, new HashMap<>());
-
+
-        var thread = threads.remove(i);
+        var thread = threads.remove(i);
-        if (thread != null) thread.interrupt();
+        if (thread != null) thread.interrupt();
-    }
+    }
-    @Native public static void clearInterval(Context ctx, int i) {
+    @Native public static void clearInterval(Context ctx, int i) {
-        clearTimeout(ctx, i);
+        clearTimeout(ctx, i);
-    }
+    }
-
+
-    @Native public static double parseInt(Context ctx, String val) {
+    @Native public static double parseInt(Context ctx, String val) {
-        return NumberLib.parseInt(ctx, val);
+        return NumberLib.parseInt(ctx, val);
-    }
+    }
-    @Native public static double parseFloat(Context ctx, String val) {
+    @Native public static double parseFloat(Context ctx, String val) {
-        return NumberLib.parseFloat(ctx, val);
+        return NumberLib.parseFloat(ctx, val);
-    }
+    }
-
+
-    @Native public static boolean isNaN(Context ctx, double val) {
+    @Native public static boolean isNaN(Context ctx, double val) {
-        return NumberLib.isNaN(ctx, val);
+        return NumberLib.isNaN(ctx, val);
-    }
+    }
-    @Native public static boolean isFinite(Context ctx, double val) {
+    @Native public static boolean isFinite(Context ctx, double val) {
-        return NumberLib.isFinite(ctx, val);
+        return NumberLib.isFinite(ctx, val);
-    }
+    }
-    @Native public static boolean isInfinite(Context ctx, double val) {
+    @Native public static boolean isInfinite(Context ctx, double val) {
-        return NumberLib.isInfinite(ctx, val);
+        return NumberLib.isInfinite(ctx, val);
-    }
+    }
-
+
-    @NativeGetter public static double NaN(Context ctx) {
+    @NativeGetter public static double NaN(Context ctx) {
-        return Double.NaN;
+        return Double.NaN;
-    }
+    }
-    @NativeGetter public static double Infinity(Context ctx) {
+    @NativeGetter public static double Infinity(Context ctx) {
-        return Double.POSITIVE_INFINITY;
+        return Double.POSITIVE_INFINITY;
-    }
+    }
-    private static final String HEX = "0123456789ABCDEF";
+    private static final String HEX = "0123456789ABCDEF";
-
+
-    private static String encodeUriAny(String str, String keepAlphabet) {
+    private static String encodeUriAny(String str, String keepAlphabet) {
-        if (str == null) str = "undefined";
+        if (str == null) str = "undefined";
-
+
-        var bytes = str.getBytes();
+        var bytes = str.getBytes();
-        var sb = new StringBuilder(bytes.length);
+        var sb = new StringBuilder(bytes.length);
-
+
-        for (byte c : bytes) {
+        for (byte c : bytes) {
-            if (Parsing.isAlphanumeric((char)c) || Parsing.isAny((char)c, keepAlphabet)) sb.append((char)c);
+            if (Parsing.isAlphanumeric((char)c) || Parsing.isAny((char)c, keepAlphabet)) sb.append((char)c);
-            else {
+            else {
-                sb.append('%');
+                sb.append('%');
-                sb.append(HEX.charAt(c / 16));
+                sb.append(HEX.charAt(c / 16));
-                sb.append(HEX.charAt(c % 16));
+                sb.append(HEX.charAt(c % 16));
-            }
+            }
-        }
+        }
-
+
-        return sb.toString();
+        return sb.toString();
-    }
+    }
-    private static String decodeUriAny(String str, String keepAlphabet) {
+    private static String decodeUriAny(String str, String keepAlphabet) {
-        if (str == null) str = "undefined";
+        if (str == null) str = "undefined";
-
+
-        var res = new Buffer();
+        var res = new Buffer();
-        var bytes = str.getBytes();
+        var bytes = str.getBytes();
-
+
-        for (var i = 0; i < bytes.length; i++) {
+        for (var i = 0; i < bytes.length; i++) {
-            var c = bytes[i];
+            var c = bytes[i];
-            if (c == '%') {
+            if (c == '%') {
-                if (i >= bytes.length - 2) throw EngineException.ofError("URIError", "URI malformed.");
+                if (i >= bytes.length - 2) throw EngineException.ofError("URIError", "URI malformed.");
-                var b = Parsing.fromHex((char)bytes[i + 1]) * 16 | Parsing.fromHex((char)bytes[i + 2]);
+                var b = Parsing.fromHex((char)bytes[i + 1]) * 16 | Parsing.fromHex((char)bytes[i + 2]);
-                if (!Parsing.isAny((char)b, keepAlphabet)) {
+                if (!Parsing.isAny((char)b, keepAlphabet)) {
-                    i += 2;
+                    i += 2;
-                    res.append((byte)b);
+                    res.append((byte)b);
-                    continue;
+                    continue;
-                }
+                }
-            }
+            }
-            res.append(c);
+            res.append(c);
-        }
+        }
-
+
-        return new String(res.data());
+        return new String(res.data());
-    }
+    }
-
+
-    @Native public static String encodeURIComponent(String str) {
+    @Native public static String encodeURIComponent(String str) {
-        return encodeUriAny(str, ".-_!~*'()");
+        return encodeUriAny(str, ".-_!~*'()");
-    }
+    }
-    @Native public static String decodeURIComponent(String str) {
+    @Native public static String decodeURIComponent(String str) {
-        return decodeUriAny(str, "");
+        return decodeUriAny(str, "");
-    }
+    }
-    @Native public static String encodeURI(String str) {
+    @Native public static String encodeURI(String str) {
-        return encodeUriAny(str, ";,/?:@&=+$#.-_!~*'()");
+        return encodeUriAny(str, ";,/?:@&=+$#.-_!~*'()");
-    }
+    }
-    @Native public static String decodeURI(String str) {
+    @Native public static String decodeURI(String str) {
-        return decodeUriAny(str, ",/?:@&=+$#.");
+        return decodeUriAny(str, ",/?:@&=+$#.");
-    }
+    }
-
+
-    public static Environment apply(Environment env) {
+    public static Environment apply(Environment env) {
-        var wp = env.wrappers;
+        var wp = env.wrappers;
-        var glob = env.global = new GlobalScope(wp.getNamespace(Internals.class));
+        var glob = env.global = new GlobalScope(wp.getNamespace(Internals.class));
-
+
-        glob.define(null, "Math", false, wp.getNamespace(MathLib.class));
+        glob.define(null, "Math", false, wp.getNamespace(MathLib.class));
-        glob.define(null, "JSON", false, wp.getNamespace(JSONLib.class));
+        glob.define(null, "JSON", false, wp.getNamespace(JSONLib.class));
-        glob.define(null, "Encoding", false, wp.getNamespace(EncodingLib.class));
+        glob.define(null, "Encoding", false, wp.getNamespace(EncodingLib.class));
-        glob.define(null, "Filesystem", false, wp.getNamespace(FilesystemLib.class));
+        glob.define(null, "Filesystem", false, wp.getNamespace(FilesystemLib.class));
-
+
-        glob.define(null, "Date", false, wp.getConstr(DateLib.class));
+        glob.define(false, wp.getConstr(DateLib.class));
-        glob.define(null, "Object", false, wp.getConstr(ObjectLib.class));
+        glob.define(false, wp.getConstr(ObjectLib.class));
-        glob.define(null, "Function", false, wp.getConstr(FunctionLib.class));
+        glob.define(false, wp.getConstr(FunctionLib.class));
-        glob.define(null, "Array", false, wp.getConstr(ArrayLib.class));
+        glob.define(false, wp.getConstr(ArrayLib.class));
-
+
-        glob.define(null, "Boolean", false, wp.getConstr(BooleanLib.class));
+        glob.define(false, wp.getConstr(BooleanLib.class));
-        glob.define(null, "Number", false, wp.getConstr(NumberLib.class));
+        glob.define(false, wp.getConstr(NumberLib.class));
-        glob.define(null, "String", false, wp.getConstr(StringLib.class));
+        glob.define(false, wp.getConstr(StringLib.class));
-        glob.define(null, "Symbol", false, wp.getConstr(SymbolLib.class));
+        glob.define(false, wp.getConstr(SymbolLib.class));
-
+
-        glob.define(null, "Promise", false, wp.getConstr(PromiseLib.class));
+        glob.define(false, wp.getConstr(PromiseLib.class));
-        glob.define(null, "RegExp", false, wp.getConstr(RegExpLib.class));
+        glob.define(false, wp.getConstr(RegExpLib.class));
-        glob.define(null, "Map", false, wp.getConstr(MapLib.class));
+        glob.define(false, wp.getConstr(MapLib.class));
-        glob.define(null, "Set", false, wp.getConstr(SetLib.class));
+        glob.define(false, wp.getConstr(SetLib.class));
-
+
-        glob.define(null, "Error", false, wp.getConstr(ErrorLib.class));
+        glob.define(false, wp.getConstr(ErrorLib.class));
-        glob.define(null, "SyntaxError", false, wp.getConstr(SyntaxErrorLib.class));
+        glob.define(false, wp.getConstr(SyntaxErrorLib.class));
-        glob.define(null, "TypeError", false, wp.getConstr(TypeErrorLib.class));
+        glob.define(false, wp.getConstr(TypeErrorLib.class));
-        glob.define(null, "RangeError", false, wp.getConstr(RangeErrorLib.class));
+        glob.define(false, wp.getConstr(RangeErrorLib.class));
-
+
-        env.setProto("object", wp.getProto(ObjectLib.class));
+        env.setProto("object", wp.getProto(ObjectLib.class));
-        env.setProto("function", wp.getProto(FunctionLib.class));
+        env.setProto("function", wp.getProto(FunctionLib.class));
-        env.setProto("array", wp.getProto(ArrayLib.class));
+        env.setProto("array", wp.getProto(ArrayLib.class));
-
+
-        env.setProto("bool", wp.getProto(BooleanLib.class));
+        env.setProto("bool", wp.getProto(BooleanLib.class));
-        env.setProto("number", wp.getProto(NumberLib.class));
+        env.setProto("number", wp.getProto(NumberLib.class));
-        env.setProto("string", wp.getProto(StringLib.class));
+        env.setProto("string", wp.getProto(StringLib.class));
-        env.setProto("symbol", wp.getProto(SymbolLib.class));
+        env.setProto("symbol", wp.getProto(SymbolLib.class));
-
+
-        env.setProto("error", wp.getProto(ErrorLib.class));
+        env.setProto("error", wp.getProto(ErrorLib.class));
-        env.setProto("syntaxErr", wp.getProto(SyntaxErrorLib.class));
+        env.setProto("syntaxErr", wp.getProto(SyntaxErrorLib.class));
-        env.setProto("typeErr", wp.getProto(TypeErrorLib.class));
+        env.setProto("typeErr", wp.getProto(TypeErrorLib.class));
-        env.setProto("rangeErr", wp.getProto(RangeErrorLib.class));
+        env.setProto("rangeErr", wp.getProto(RangeErrorLib.class));
-
+
-        wp.getProto(ObjectLib.class).setPrototype(null, null);
+        wp.getProto(ObjectLib.class).setPrototype(null, null);
-        env.regexConstructor = wp.getConstr(RegExpLib.class);
+        env.regexConstructor = wp.getConstr(RegExpLib.class);
-
+
-        return env;
+        return env;
-    }
+    }
-}
+}

src/me/topchetoeu/jscript/lib/MapLib.java

@@ -1,78 +1,78 @@
-package me.topchetoeu.jscript.lib;
+package me.topchetoeu.jscript.lib;
-
+
-import java.util.ArrayList;
+import java.util.ArrayList;
-import java.util.LinkedHashMap;
+import java.util.LinkedHashMap;
-import java.util.stream.Collectors;
+import java.util.stream.Collectors;
-
+
-import me.topchetoeu.jscript.engine.Context;
+import me.topchetoeu.jscript.engine.Context;
-import me.topchetoeu.jscript.engine.values.ArrayValue;
+import me.topchetoeu.jscript.engine.values.ArrayValue;
-import me.topchetoeu.jscript.engine.values.FunctionValue;
+import me.topchetoeu.jscript.engine.values.FunctionValue;
-import me.topchetoeu.jscript.engine.values.ObjectValue;
+import me.topchetoeu.jscript.engine.values.ObjectValue;
-import me.topchetoeu.jscript.engine.values.Values;
+import me.topchetoeu.jscript.engine.values.Values;
-import me.topchetoeu.jscript.interop.Native;
+import me.topchetoeu.jscript.interop.Native;
-import me.topchetoeu.jscript.interop.NativeGetter;
+import me.topchetoeu.jscript.interop.NativeGetter;
-
+
-@Native("Map") public class MapLib {
+@Native("Map") public class MapLib {
-    private LinkedHashMap<Object, Object> map = new LinkedHashMap<>();
+    private LinkedHashMap<Object, Object> map = new LinkedHashMap<>();
-
+
-    @Native("@@Symbol.typeName") public final String name = "Map";
+    @Native("@@Symbol.typeName") public final String name = "Map";
-    @Native("@@Symbol.iterator") public ObjectValue iterator(Context ctx) {
+    @Native("@@Symbol.iterator") public ObjectValue iterator(Context ctx) {
-        return this.entries(ctx);
+        return this.entries(ctx);
-    }
+    }
-
+
-    @Native public void clear() {
+    @Native public void clear() {
-        map.clear();
+        map.clear();
-    }
+    }
-    @Native public boolean delete(Object key) {
+    @Native public boolean delete(Object key) {
-        if (map.containsKey(key)) {
+        if (map.containsKey(key)) {
-            map.remove(key);
+            map.remove(key);
-            return true;
+            return true;
-        }
+        }
-        return false;
+        return false;
-    }
+    }
-
+
-    @Native public ObjectValue entries(Context ctx) {
+    @Native public ObjectValue entries(Context ctx) {
-        var res = map.entrySet().stream().map(v -> {
+        return ArrayValue.of(ctx, map
-            return new ArrayValue(ctx, v.getKey(), v.getValue());
+            .entrySet()
-        }).collect(Collectors.toList());
+            .stream()
-        return Values.toJSIterator(ctx, res.iterator());
+            .map(v -> new ArrayValue(ctx, v.getKey(), v.getValue()))
-    }
+            .collect(Collectors.toList())
-    @Native public ObjectValue keys(Context ctx) {
+        );
-        var res = new ArrayList<>(map.keySet());
+    }
-        return Values.toJSIterator(ctx, res.iterator());
+    @Native public ObjectValue keys(Context ctx) {
-    }
+        return ArrayValue.of(ctx, map.keySet());
-    @Native public ObjectValue values(Context ctx) {
+    }
-        var res = new ArrayList<>(map.values());
+    @Native public ObjectValue values(Context ctx) {
-        return Values.toJSIterator(ctx, res.iterator());
+        return ArrayValue.of(ctx, map.values());
-    }
+    }
-
+
-    @Native public Object get(Object key) {
+    @Native public Object get(Object key) {
-        return map.get(key);
+        return map.get(key);
-    }
+    }
-    @Native public MapLib set(Object key, Object val) {
+    @Native public MapLib set(Object key, Object val) {
-        map.put(key, val);
+        map.put(key, val);
-        return this;
+        return this;
-    }
+    }
-    @Native public boolean has(Object key) {
+    @Native public boolean has(Object key) {
-        return map.containsKey(key);
+        return map.containsKey(key);
-    }
+    }
-
+
-    @NativeGetter public int size() {
+    @NativeGetter public int size() {
-        return map.size();
+        return map.size();
-    }
+    }
-
+
-    @Native public void forEach(Context ctx, FunctionValue func, Object thisArg) {
+    @Native public void forEach(Context ctx, FunctionValue func, Object thisArg) {
-        var keys = new ArrayList<>(map.keySet());
+        var keys = new ArrayList<>(map.keySet());
-
+
-        for (var el : keys) func.call(ctx, thisArg, map.get(el), el,this);
+        for (var el : keys) func.call(ctx, thisArg, map.get(el), el,this);
-    }
+    }
-
+
-    @Native public MapLib(Context ctx, Object iterable) {
+    @Native public MapLib(Context ctx, Object iterable) {
-        for (var el : Values.fromJSIterator(ctx, iterable)) {
+        for (var el : Values.fromJSIterator(ctx, iterable)) {
-            try {
+            try {
-                set(Values.getMember(ctx, el, 0), Values.getMember(ctx, el, 1));
+                set(Values.getMember(ctx, el, 0), Values.getMember(ctx, el, 1));
-            }
+            }
-            catch (IllegalArgumentException e) { }
+            catch (IllegalArgumentException e) { }
-        }
+        }
-    }
+    }
-}
+}

src/me/topchetoeu/jscript/lib/PromiseLib.java

@@ -1,366 +1,367 @@
-package me.topchetoeu.jscript.lib;
+package me.topchetoeu.jscript.lib;
-
+
-import java.util.ArrayList;
+import java.util.ArrayList;
-import java.util.List;
+import java.util.List;
-import java.util.Map;
+import java.util.Map;
-
+
-import me.topchetoeu.jscript.engine.Context;
+import me.topchetoeu.jscript.engine.Context;
-import me.topchetoeu.jscript.engine.values.ArrayValue;
+import me.topchetoeu.jscript.engine.values.ArrayValue;
-import me.topchetoeu.jscript.engine.values.FunctionValue;
+import me.topchetoeu.jscript.engine.values.FunctionValue;
-import me.topchetoeu.jscript.engine.values.NativeFunction;
+import me.topchetoeu.jscript.engine.values.NativeFunction;
-import me.topchetoeu.jscript.engine.values.NativeWrapper;
+import me.topchetoeu.jscript.engine.values.NativeWrapper;
-import me.topchetoeu.jscript.engine.values.ObjectValue;
+import me.topchetoeu.jscript.engine.values.ObjectValue;
-import me.topchetoeu.jscript.engine.values.Values;
+import me.topchetoeu.jscript.engine.values.Values;
-import me.topchetoeu.jscript.exceptions.EngineException;
+import me.topchetoeu.jscript.exceptions.EngineException;
-import me.topchetoeu.jscript.interop.Native;
+import me.topchetoeu.jscript.interop.Native;
-
+
-@Native("Promise") public class PromiseLib {
+@Native("Promise") public class PromiseLib {
-    public static interface PromiseRunner {
+    public static interface PromiseRunner {
-        Object run();
+        Object run();
-    }
+    }
-    private static class Handle {
+    private static class Handle {
-        public final Context ctx;
+        public final Context ctx;
-        public final FunctionValue fulfilled;
+        public final FunctionValue fulfilled;
-        public final FunctionValue rejected;
+        public final FunctionValue rejected;
-
+
-        public Handle(Context ctx, FunctionValue fulfilled, FunctionValue rejected) {
+        public Handle(Context ctx, FunctionValue fulfilled, FunctionValue rejected) {
-            this.ctx = ctx;
+            this.ctx = ctx;
-            this.fulfilled = fulfilled;
+            this.fulfilled = fulfilled;
-            this.rejected = rejected;
+            this.rejected = rejected;
-        }
+        }
-    }
+    }
-
+
-    @Native("resolve")
+    @Native("resolve")
-    public static PromiseLib ofResolved(Context ctx, Object val) {
+    public static PromiseLib ofResolved(Context ctx, Object val) {
-        var res = new PromiseLib();
+        var res = new PromiseLib();
-        res.fulfill(ctx, val);
+        res.fulfill(ctx, val);
-        return res;
+        return res;
-    }
+    }
-    @Native("reject")
+    @Native("reject")
-    public static PromiseLib ofRejected(Context ctx, Object val) {
+    public static PromiseLib ofRejected(Context ctx, Object val) {
-        var res = new PromiseLib();
+        var res = new PromiseLib();
-        res.reject(ctx, val);
+        res.reject(ctx, val);
-        return res;
+        return res;
-    }
+    }
-
+
-    @Native public static PromiseLib any(Context ctx, Object _promises) {
+    @Native public static PromiseLib any(Context ctx, Object _promises) {
-        if (!Values.isArray(_promises)) throw EngineException.ofType("Expected argument for any to be an array.");
+        if (!Values.isArray(_promises)) throw EngineException.ofType("Expected argument for any to be an array.");
-        var promises = Values.array(_promises); 
+        var promises = Values.array(_promises); 
-        if (promises.size() == 0) return ofResolved(ctx, new ArrayValue());
+        if (promises.size() == 0) return ofResolved(ctx, new ArrayValue());
-        var n = new int[] { promises.size() };
+        var n = new int[] { promises.size() };
-        var res = new PromiseLib();
+        var res = new PromiseLib();
-
+
-        var errors = new ArrayValue();
+        var errors = new ArrayValue();
-
+
-        for (var i = 0; i < promises.size(); i++) {
+        for (var i = 0; i < promises.size(); i++) {
-            var index = i;
+            var index = i;
-            var val = promises.get(i);
+            var val = promises.get(i);
-            then(ctx, val,
+            then(ctx, val,
-                new NativeFunction(null, (e, th, args) -> { res.fulfill(e, args[0]); return null; }),
+                new NativeFunction(null, (e, th, args) -> { res.fulfill(e, args[0]); return null; }),
-                new NativeFunction(null, (e, th, args) -> {
+                new NativeFunction(null, (e, th, args) -> {
-                    errors.set(ctx, index, args[0]);
+                    errors.set(ctx, index, args[0]);
-                    n[0]--;
+                    n[0]--;
-                    if (n[0] <= 0) res.reject(e, errors);
+                    if (n[0] <= 0) res.reject(e, errors);
-                    return null;
+                    return null;
-                })
+                })
-            );
+            );
-        }
+        }
-
+
-        return res;
+        return res;
-    }
+    }
-    @Native public static PromiseLib race(Context ctx, Object _promises)  {
+    @Native public static PromiseLib race(Context ctx, Object _promises)  {
-        if (!Values.isArray(_promises)) throw EngineException.ofType("Expected argument for any to be an array.");
+        if (!Values.isArray(_promises)) throw EngineException.ofType("Expected argument for any to be an array.");
-        var promises = Values.array(_promises); 
+        var promises = Values.array(_promises); 
-        if (promises.size() == 0) return ofResolved(ctx, new ArrayValue());
+        if (promises.size() == 0) return ofResolved(ctx, new ArrayValue());
-        var res = new PromiseLib();
+        var res = new PromiseLib();
-
+
-        for (var i = 0; i < promises.size(); i++) {
+        for (var i = 0; i < promises.size(); i++) {
-            var val = promises.get(i);
+            var val = promises.get(i);
-            then(ctx, val,
+            then(ctx, val,
-                new NativeFunction(null, (e, th, args) -> { res.fulfill(e, args[0]); return null; }),
+                new NativeFunction(null, (e, th, args) -> { res.fulfill(e, args[0]); return null; }),
-                new NativeFunction(null, (e, th, args) -> { res.reject(e, args[0]); return null; })
+                new NativeFunction(null, (e, th, args) -> { res.reject(e, args[0]); return null; })
-            );
+            );
-        }
+        }
-
+
-        return res;
+        return res;
-    }
+    }
-    @Native public static PromiseLib all(Context ctx, Object _promises)  {
+    @Native public static PromiseLib all(Context ctx, Object _promises)  {
-        if (!Values.isArray(_promises)) throw EngineException.ofType("Expected argument for any to be an array.");
+        if (!Values.isArray(_promises)) throw EngineException.ofType("Expected argument for any to be an array.");
-        var promises = Values.array(_promises); 
+        var promises = Values.array(_promises); 
-        if (promises.size() == 0) return ofResolved(ctx, new ArrayValue());
+        if (promises.size() == 0) return ofResolved(ctx, new ArrayValue());
-        var n = new int[] { promises.size() };
+        var n = new int[] { promises.size() };
-        var res = new PromiseLib();
+        var res = new PromiseLib();
-
+
-        var result = new ArrayValue();
+        var result = new ArrayValue();
-
+
-        for (var i = 0; i < promises.size(); i++) {
+        for (var i = 0; i < promises.size(); i++) {
-            var index = i;
+            var index = i;
-            var val = promises.get(i);
+            var val = promises.get(i);
-            then(ctx, val,
+            then(ctx, val,
-                new NativeFunction(null, (e, th, args) -> {
+                new NativeFunction(null, (e, th, args) -> {
-                    result.set(ctx, index, args[0]);
+                    result.set(ctx, index, args[0]);
-                    n[0]--;
+                    n[0]--;
-                    if (n[0] <= 0) res.fulfill(e, result);
+                    if (n[0] <= 0) res.fulfill(e, result);
-                    return null;
+                    return null;
-                }),
+                }),
-                new NativeFunction(null, (e, th, args) -> { res.reject(e, args[0]); return null; })
+                new NativeFunction(null, (e, th, args) -> { res.reject(e, args[0]); return null; })
-            );
+            );
-        }
+        }
-
+
-        if (n[0] <= 0) res.fulfill(ctx, result);
+        if (n[0] <= 0) res.fulfill(ctx, result);
-
+
-        return res;
+        return res;
-    }
+    }
-    @Native public static PromiseLib allSettled(Context ctx, Object _promises)  {
+    @Native public static PromiseLib allSettled(Context ctx, Object _promises)  {
-        if (!Values.isArray(_promises)) throw EngineException.ofType("Expected argument for any to be an array.");
+        if (!Values.isArray(_promises)) throw EngineException.ofType("Expected argument for any to be an array.");
-        var promises = Values.array(_promises); 
+        var promises = Values.array(_promises); 
-        if (promises.size() == 0) return ofResolved(ctx, new ArrayValue());
+        if (promises.size() == 0) return ofResolved(ctx, new ArrayValue());
-        var n = new int[] { promises.size() };
+        var n = new int[] { promises.size() };
-        var res = new PromiseLib();
+        var res = new PromiseLib();
-
+
-        var result = new ArrayValue();
+        var result = new ArrayValue();
-
+
-        for (var i = 0; i < promises.size(); i++) {
+        for (var i = 0; i < promises.size(); i++) {
-            var index = i;
+            var index = i;
-            var val = promises.get(i);
+            var val = promises.get(i);
-            then(ctx, val,
+            then(ctx, val,
-                new NativeFunction(null, (e, th, args) -> {
+                new NativeFunction(null, (e, th, args) -> {
-                    result.set(ctx, index, new ObjectValue(ctx, Map.of(
+                    result.set(ctx, index, new ObjectValue(ctx, Map.of(
-                        "status", "fulfilled",
+                        "status", "fulfilled",
-                        "value", args[0]
+                        "value", args[0]
-                    )));
+                    )));
-                    n[0]--;
+                    n[0]--;
-                    if (n[0] <= 0) res.fulfill(e, result);
+                    if (n[0] <= 0) res.fulfill(e, result);
-                    return null;
+                    return null;
-                }),
+                }),
-                new NativeFunction(null, (e, th, args) -> {
+                new NativeFunction(null, (e, th, args) -> {
-                    result.set(ctx, index, new ObjectValue(ctx, Map.of(
+                    result.set(ctx, index, new ObjectValue(ctx, Map.of(
-                        "status", "rejected",
+                        "status", "rejected",
-                        "reason", args[0]
+                        "reason", args[0]
-                    )));
+                    )));
-                    n[0]--;
+                    n[0]--;
-                    if (n[0] <= 0) res.fulfill(e, result);
+                    if (n[0] <= 0) res.fulfill(e, result);
-                    return null;
+                    return null;
-                })
+                })
-            );
+            );
-        }
+        }
-
+
-        if (n[0] <= 0) res.fulfill(ctx, result);
+        if (n[0] <= 0) res.fulfill(ctx, result);
-
+
-        return res;
+        return res;
-    }
+    }
-
+
-    /**
+    /**
-     * Thread safe - you can call this from anywhere
+     * Thread safe - you can call this from anywhere
-     * HOWEVER, it's strongly recommended to use this only in javascript
+     * HOWEVER, it's strongly recommended to use this only in javascript
-     */
+     */
-    @Native(thisArg=true) public static Object then(Context ctx, Object thisArg, Object _onFulfill, Object _onReject) {
+    @Native(thisArg=true) public static Object then(Context ctx, Object _thisArg, Object _onFulfill, Object _onReject) {
-        var onFulfill = _onFulfill instanceof FunctionValue ? ((FunctionValue)_onFulfill) : null;
+        var onFulfill = _onFulfill instanceof FunctionValue ? ((FunctionValue)_onFulfill) : null;
-        var onReject = _onReject instanceof FunctionValue ? ((FunctionValue)_onReject) : null;
+        var onReject = _onReject instanceof FunctionValue ? ((FunctionValue)_onReject) : null;
-
+
-        var res = new PromiseLib();
+        var res = new PromiseLib();
-
+
-        var fulfill = onFulfill == null ? new NativeFunction((_ctx, _thisArg, _args) -> _args.length > 0 ? _args[0] : null) : (FunctionValue)onFulfill;
+        var fulfill = onFulfill == null ? new NativeFunction((_ctx, _0, _args) -> _args.length > 0 ? _args[0] : null) : (FunctionValue)onFulfill;
-        var reject = onReject == null ? new NativeFunction((_ctx, _thisArg, _args) -> {
+        var reject = onReject == null ? new NativeFunction((_ctx, _0, _args) -> {
-            throw new EngineException(_args.length > 0 ? _args[0] : null);
+            throw new EngineException(_args.length > 0 ? _args[0] : null);
-        }) : (FunctionValue)onReject;
+        }) : (FunctionValue)onReject;
-
+
-        if (thisArg instanceof NativeWrapper && ((NativeWrapper)thisArg).wrapped instanceof PromiseLib) {
+        var thisArg = _thisArg instanceof NativeWrapper && ((NativeWrapper)_thisArg).wrapped instanceof PromiseLib ?
-            thisArg = ((NativeWrapper)thisArg).wrapped;
+            ((NativeWrapper)_thisArg).wrapped :
-        }
+            _thisArg;
-
+
-        var fulfillHandle = new NativeFunction(null, (_ctx, th, a) -> {
+        var fulfillHandle = new NativeFunction(null, (_ctx, th, a) -> {
-            try { res.fulfill(ctx, Values.convert(ctx, fulfill.call(ctx, null, a[0]), Object.class)); }
+            try { res.fulfill(ctx, Values.convert(ctx, fulfill.call(ctx, null, a[0]), Object.class)); }
-            catch (EngineException err) { res.reject(ctx, err.value); }
+            catch (EngineException err) { res.reject(ctx, err.value); }
-            return null;
+            return null;
-        });
+        });
-        var rejectHandle = new NativeFunction(null, (_ctx, th, a) -> {
+        var rejectHandle = new NativeFunction(null, (_ctx, th, a) -> {
-            try { res.fulfill(ctx, reject.call(ctx, null, a[0])); }
+            try { res.fulfill(ctx, reject.call(ctx, null, a[0])); }
-            catch (EngineException err) { res.reject(ctx, err.value); }
+            catch (EngineException err) { res.reject(ctx, err.value); }
-            return null;
+            if (thisArg instanceof PromiseLib) ((PromiseLib)thisArg).handled = true;
-        });
+            return null;
-
+        });
-        if (thisArg instanceof PromiseLib) ((PromiseLib)thisArg).handle(ctx, fulfillHandle, rejectHandle);
+
-        else {
+        if (thisArg instanceof PromiseLib) ((PromiseLib)thisArg).handle(ctx, fulfillHandle, rejectHandle);
-            Object next;
+        else {
-            try { next = Values.getMember(ctx, thisArg, "then"); }
+            Object next;
-            catch (IllegalArgumentException e) { next = null; }
+            try { next = Values.getMember(ctx, thisArg, "then"); }
-
+            catch (IllegalArgumentException e) { next = null; }
-            try {
+
-                if (next instanceof FunctionValue) ((FunctionValue)next).call(ctx, thisArg, fulfillHandle, rejectHandle);
+            try {
-                else res.fulfill(ctx, fulfill.call(ctx, null, thisArg));
+                if (next instanceof FunctionValue) ((FunctionValue)next).call(ctx, thisArg, fulfillHandle, rejectHandle);
-            }
+                else res.fulfill(ctx, fulfill.call(ctx, null, thisArg));
-            catch (EngineException err) {
+            }
-                res.reject(ctx, fulfill.call(ctx, null, err.value));
+            catch (EngineException err) {
-            }
+                res.reject(ctx, fulfill.call(ctx, null, err.value));
-        }
+            }
-
+        }
-        return res;
+
-    }
+        return res;
-    /**
+    }
-     * Thread safe - you can call this from anywhere
+    /**
-     * HOWEVER, it's strongly recommended to use this only in javascript
+     * Thread safe - you can call this from anywhere
-     */
+     * HOWEVER, it's strongly recommended to use this only in javascript
-    @Native(value="catch", thisArg=true) public static Object _catch(Context ctx, Object thisArg, Object _onReject) {
+     */
-        return then(ctx, thisArg, null, _onReject);
+    @Native(value="catch", thisArg=true) public static Object _catch(Context ctx, Object thisArg, Object _onReject) {
-    }
+        return then(ctx, thisArg, null, _onReject);
-    /**
+    }
-     * Thread safe - you can call this from anywhere
+    /**
-     * HOWEVER, it's strongly recommended to use this only in javascript
+     * Thread safe - you can call this from anywhere
-     */
+     * HOWEVER, it's strongly recommended to use this only in javascript
-    @Native(value="finally", thisArg=true) public static Object _finally(Context ctx, Object thisArg, Object _handle) {
+     */
-        return then(ctx, thisArg,
+    @Native(value="finally", thisArg=true) public static Object _finally(Context ctx, Object thisArg, Object _handle) {
-            new NativeFunction(null, (e, th, _args) -> {
+        return then(ctx, thisArg,
-                if (_handle instanceof FunctionValue) ((FunctionValue)_handle).call(ctx);
+            new NativeFunction(null, (e, th, _args) -> {
-                return _args.length > 0 ? _args[0] : null;
+                if (_handle instanceof FunctionValue) ((FunctionValue)_handle).call(ctx);
-            }),
+                return _args.length > 0 ? _args[0] : null;
-            new NativeFunction(null, (e, th, _args) -> {
+            }),
-                if (_handle instanceof FunctionValue) ((FunctionValue)_handle).call(ctx);
+            new NativeFunction(null, (e, th, _args) -> {
-                throw new EngineException(_args.length > 0 ? _args[0] : null);
+                if (_handle instanceof FunctionValue) ((FunctionValue)_handle).call(ctx);
-            })
+                throw new EngineException(_args.length > 0 ? _args[0] : null);
-        );
+            })
-    }
+        );
-
+    }
-    private List<Handle> handles = new ArrayList<>();
+
-
+    private List<Handle> handles = new ArrayList<>();
-    private static final int STATE_PENDING = 0;
+
-    private static final int STATE_FULFILLED = 1;
+    private static final int STATE_PENDING = 0;
-    private static final int STATE_REJECTED = 2;
+    private static final int STATE_FULFILLED = 1;
-
+    private static final int STATE_REJECTED = 2;
-    private int state = STATE_PENDING;
+
-    private boolean handled = false;
+    private int state = STATE_PENDING;
-    private Object val;
+    private boolean handled = false;
-
+    private Object val;
-    public synchronized void fulfill(Context ctx, Object val) {
+
-        if (this.state != STATE_PENDING) return;
+    public synchronized void fulfill(Context ctx, Object val) {
-
+        if (this.state != STATE_PENDING) return;
-        if (val instanceof PromiseLib) ((PromiseLib)val).handle(ctx,
+
-            new NativeFunction(null, (e, th, a) -> { this.fulfill(ctx, a[0]); return null; }),
+        if (val instanceof PromiseLib) ((PromiseLib)val).handle(ctx,
-            new NativeFunction(null, (e, th, a) -> { this.reject(ctx, a[0]); return null; })
+            new NativeFunction(null, (e, th, a) -> { this.fulfill(ctx, a[0]); return null; }),
-        );
+            new NativeFunction(null, (e, th, a) -> { this.reject(ctx, a[0]); return null; })
-        else {
+        );
-            Object then;
+        else {
-            try { then = Values.getMember(ctx, val, "then"); }
+            Object then;
-            catch (IllegalArgumentException e) { then = null; }
+            try { then = Values.getMember(ctx, val, "then"); }
-
+            catch (IllegalArgumentException e) { then = null; }
-            try {
+
-                if (then instanceof FunctionValue) ((FunctionValue)then).call(ctx, val,
+            try {
-                    new NativeFunction((e, _thisArg, a) -> { this.fulfill(ctx, a.length > 0 ? a[0] : null); return null; }),
+                if (then instanceof FunctionValue) ((FunctionValue)then).call(ctx, val,
-                    new NativeFunction((e, _thisArg, a) -> { this.reject(ctx, a.length > 0 ? a[0] : null); return null; })
+                    new NativeFunction((e, _thisArg, a) -> { this.fulfill(ctx, a.length > 0 ? a[0] : null); return null; }),
-                );
+                    new NativeFunction((e, _thisArg, a) -> { this.reject(ctx, a.length > 0 ? a[0] : null); return null; })
-                else {
+                );
-                    this.val = val;
+                else {
-                    this.state = STATE_FULFILLED;
+                    this.val = val;
-
+                    this.state = STATE_FULFILLED;
-                    ctx.engine.pushMsg(true, ctx, new NativeFunction((_ctx, _thisArg, _args) -> {
+
-                        for (var handle : handles) {
+                    ctx.engine.pushMsg(true, ctx, new NativeFunction((_ctx, _thisArg, _args) -> {
-                            handle.fulfilled.call(handle.ctx, null, val);
+                        for (var handle : handles) {
-                        }
+                            handle.fulfilled.call(handle.ctx, null, val);
-                        handles = null;
+                        }
-                        return null;
+                        handles = null;
-                    }), null);
+                        return null;
-                }
+                    }), null);
-            }
+                }
-            catch (EngineException err) {
+            }
-                this.reject(ctx, err.value);
+            catch (EngineException err) {
-            }
+                this.reject(ctx, err.value);
-        }
+            }
-    }
+        }
-    public synchronized void reject(Context ctx, Object val) {
+    }
-        if (this.state != STATE_PENDING) return;
+    public synchronized void reject(Context ctx, Object val) {
-
+        if (this.state != STATE_PENDING) return;
-        if (val instanceof PromiseLib) ((PromiseLib)val).handle(ctx,
+
-            new NativeFunction(null, (e, th, a) -> { this.reject(ctx, a[0]); return null; }),
+        if (val instanceof PromiseLib) ((PromiseLib)val).handle(ctx,
-            new NativeFunction(null, (e, th, a) -> { this.reject(ctx, a[0]); return null; })
+            new NativeFunction(null, (e, th, a) -> { this.reject(ctx, a[0]); return null; }),
-        );
+            new NativeFunction(null, (e, th, a) -> { this.reject(ctx, a[0]); return null; })
-        else {
+        );
-            Object then;
+        else {
-            try { then = Values.getMember(ctx, val, "then"); }
+            Object then;
-            catch (IllegalArgumentException e) { then = null; }
+            try { then = Values.getMember(ctx, val, "then"); }
-
+            catch (IllegalArgumentException e) { then = null; }
-            try {
+
-                if (then instanceof FunctionValue) ((FunctionValue)then).call(ctx, val,
+            try {
-                    new NativeFunction((e, _thisArg, a) -> { this.reject(ctx, a.length > 0 ? a[0] : null); return null; }),
+                if (then instanceof FunctionValue) ((FunctionValue)then).call(ctx, val,
-                    new NativeFunction((e, _thisArg, a) -> { this.reject(ctx, a.length > 0 ? a[0] : null); return null; })
+                    new NativeFunction((e, _thisArg, a) -> { this.reject(ctx, a.length > 0 ? a[0] : null); return null; }),
-                );
+                    new NativeFunction((e, _thisArg, a) -> { this.reject(ctx, a.length > 0 ? a[0] : null); return null; })
-                else {
+                );
-                    this.val = val;
+                else {
-                    this.state = STATE_REJECTED;
+                    this.val = val;
-
+                    this.state = STATE_REJECTED;
-                    ctx.engine.pushMsg(true, ctx, new NativeFunction((_ctx, _thisArg, _args) -> {
+
-                        for (var handle : handles) handle.rejected.call(handle.ctx, null, val);
+                    ctx.engine.pushMsg(true, ctx, new NativeFunction((_ctx, _thisArg, _args) -> {
-                        if (!handled) {
+                        for (var handle : handles) handle.rejected.call(handle.ctx, null, val);
-                            Values.printError(new EngineException(val).setCtx(ctx.environment(), ctx.engine), "(in promise)");
+                        if (!handled) {
-                        }
+                            Values.printError(new EngineException(val).setCtx(ctx.environment(), ctx.engine), "(in promise)");
-                        handles = null;
+                        }
-                        return null;
+                        handles = null;
-                    }), null);
+                        return null;
-                }
+                    }), null);
-            }
+                }
-            catch (EngineException err) {
+            }
-                this.reject(ctx, err.value);
+            catch (EngineException err) {
-            }
+                this.reject(ctx, err.value);
-        }
+            }
-    }
+        }
-
+    }
-    private void handle(Context ctx, FunctionValue fulfill, FunctionValue reject) {
+
-        if (state == STATE_FULFILLED) ctx.engine.pushMsg(true, ctx, fulfill, null, val);
+    private void handle(Context ctx, FunctionValue fulfill, FunctionValue reject) {
-        else if (state == STATE_REJECTED) {
+        if (state == STATE_FULFILLED) ctx.engine.pushMsg(true, ctx, fulfill, null, val);
-            ctx.engine.pushMsg(true, ctx, reject, null, val);
+        else if (state == STATE_REJECTED) {
-            handled = true;
+            ctx.engine.pushMsg(true, ctx, reject, null, val);
-        }
+            handled = true;
-        else handles.add(new Handle(ctx, fulfill, reject));
+        }
-    }
+        else handles.add(new Handle(ctx, fulfill, reject));
-
+    }
-    @Override @Native public String toString() {
+
-        if (state == STATE_PENDING) return "Promise (pending)";
+    @Override @Native public String toString() {
-        else if (state == STATE_FULFILLED) return "Promise (fulfilled)";
+        if (state == STATE_PENDING) return "Promise (pending)";
-        else return "Promise (rejected)";
+        else if (state == STATE_FULFILLED) return "Promise (fulfilled)";
-    }
+        else return "Promise (rejected)";
-
+    }
-    /**
+
-     * NOT THREAD SAFE - must be called from the engine executor thread
+    /**
-     */
+     * NOT THREAD SAFE - must be called from the engine executor thread
-    @Native public PromiseLib(Context ctx, FunctionValue func) {
+     */
-        if (!(func instanceof FunctionValue)) throw EngineException.ofType("A function must be passed to the promise constructor.");
+    @Native public PromiseLib(Context ctx, FunctionValue func) {
-        try {
+        if (!(func instanceof FunctionValue)) throw EngineException.ofType("A function must be passed to the promise constructor.");
-            func.call(
+        try {
-                ctx, null,
+            func.call(
-                new NativeFunction(null, (e, th, args) -> {
+                ctx, null,
-                    fulfill(e, args.length > 0 ? args[0] : null);
+                new NativeFunction(null, (e, th, args) -> {
-                    return null;
+                    fulfill(e, args.length > 0 ? args[0] : null);
-                }),
+                    return null;
-                new NativeFunction(null, (e, th, args) -> {
+                }),
-                    reject(e, args.length > 0 ? args[0] : null);
+                new NativeFunction(null, (e, th, args) -> {
-                    return null;
+                    reject(e, args.length > 0 ? args[0] : null);
-                })
+                    return null;
-            );
+                })
-        }
+            );
-        catch (EngineException e) {
+        }
-            reject(ctx, e.value);
+        catch (EngineException e) {
-        }
+            reject(ctx, e.value);
-    }
+        }
-
+    }
-    private PromiseLib(int state, Object val) {
+
-        this.state = state;
+    private PromiseLib(int state, Object val) {
-        this.val = val;
+        this.state = state;
-    }
+        this.val = val;
-    public PromiseLib() {
+    }
-        this(STATE_PENDING, null);
+    public PromiseLib() {
-    }
+        this(STATE_PENDING, null);
-
+    }
-    public static PromiseLib await(Context ctx, PromiseRunner runner) {
+
-        var res = new PromiseLib();
+    public static PromiseLib await(Context ctx, PromiseRunner runner) {
-
+        var res = new PromiseLib();
-        new Thread(() -> {
+
-            try {
+        new Thread(() -> {
-                res.fulfill(ctx, runner.run());
+            try {
-            }
+                res.fulfill(ctx, runner.run());
-            catch (EngineException e) {
+            }
-                res.reject(ctx, e.value);
+            catch (EngineException e) {
-            }
+                res.reject(ctx, e.value);
-        }, "Promisifier").start();
+            }
-
+        }, "Promisifier").start();
-        return res;
+
-    }
+        return res;
-}
+    }
+}

src/me/topchetoeu/jscript/lib/SetLib.java

@@ -1,63 +1,60 @@
-package me.topchetoeu.jscript.lib;
+package me.topchetoeu.jscript.lib;
-
+
-import java.util.ArrayList;
+import java.util.ArrayList;
-import java.util.LinkedHashSet;
+import java.util.LinkedHashSet;
-import java.util.stream.Collectors;
+import java.util.stream.Collectors;
-
+
-import me.topchetoeu.jscript.engine.Context;
+import me.topchetoeu.jscript.engine.Context;
-import me.topchetoeu.jscript.engine.values.ArrayValue;
+import me.topchetoeu.jscript.engine.values.ArrayValue;
-import me.topchetoeu.jscript.engine.values.FunctionValue;
+import me.topchetoeu.jscript.engine.values.FunctionValue;
-import me.topchetoeu.jscript.engine.values.ObjectValue;
+import me.topchetoeu.jscript.engine.values.ObjectValue;
-import me.topchetoeu.jscript.engine.values.Values;
+import me.topchetoeu.jscript.engine.values.Values;
-import me.topchetoeu.jscript.interop.Native;
+import me.topchetoeu.jscript.interop.Native;
-import me.topchetoeu.jscript.interop.NativeGetter;
+import me.topchetoeu.jscript.interop.NativeGetter;
-
+
-@Native("Set") public class SetLib {
+@Native("Set") public class SetLib {
-    private LinkedHashSet<Object> set = new LinkedHashSet<>();
+    private LinkedHashSet<Object> set = new LinkedHashSet<>();
-
+
-    @Native("@@Symbol.typeName") public final String name = "Set";
+    @Native("@@Symbol.typeName") public final String name = "Set";
-    @Native("@@Symbol.iterator") public ObjectValue iterator(Context ctx) {
+    @Native("@@Symbol.iterator") public ObjectValue iterator(Context ctx) {
-        return this.values(ctx);
+        return this.values(ctx);
-    }
+    }
-
+
-    @Native public ObjectValue entries(Context ctx) {
+    @Native public ObjectValue entries(Context ctx) {
-        var res = set.stream().map(v -> new ArrayValue(ctx, v, v)).collect(Collectors.toList());
+        return ArrayValue.of(ctx, set.stream().map(v -> new ArrayValue(ctx, v, v)).collect(Collectors.toList()));
-        return Values.toJSIterator(ctx, res.iterator());
+    }
-    }
+    @Native public ObjectValue keys(Context ctx) {
-    @Native public ObjectValue keys(Context ctx) {
+        return ArrayValue.of(ctx, set);
-        var res = new ArrayList<>(set);
+    }
-        return Values.toJSIterator(ctx, res.iterator());
+    @Native public ObjectValue values(Context ctx) {
-    }
+        return ArrayValue.of(ctx, set);
-    @Native public ObjectValue values(Context ctx) {
+    }
-        var res = new ArrayList<>(set);
+
-        return Values.toJSIterator(ctx, res.iterator());
+    @Native public Object add(Object key) {
-    }
+        return set.add(key);
-
+    }
-    @Native public Object add(Object key) {
+    @Native public boolean delete(Object key) {
-        return set.add(key);
+        return set.remove(key);
-    }
+    }
-    @Native public boolean delete(Object key) {
+    @Native public boolean has(Object key) {
-        return set.remove(key);
+        return set.contains(key);
-    }
+    }
-    @Native public boolean has(Object key) {
+
-        return set.contains(key);
+    @Native public void clear() {
-    }
+        set.clear();
-
+    }
-    @Native public void clear() {
+
-        set.clear();
+    @NativeGetter public int size() {
-    }
+        return set.size();
-
+    }
-    @NativeGetter public int size() {
+
-        return set.size();
+    @Native public void forEach(Context ctx, FunctionValue func, Object thisArg) {
-    }
+        var keys = new ArrayList<>(set);
-
+
-    @Native public void forEach(Context ctx, FunctionValue func, Object thisArg) {
+        for (var el : keys) func.call(ctx, thisArg, el, el, this);
-        var keys = new ArrayList<>(set);
+    }
-
+
-        for (var el : keys) func.call(ctx, thisArg, el, el, this);
+    @Native public SetLib(Context ctx, Object iterable) {
-    }
+        for (var el : Values.fromJSIterator(ctx, iterable)) add(el);
-
+    }
-    @Native public SetLib(Context ctx, Object iterable) {
+}
-        for (var el : Values.fromJSIterator(ctx, iterable)) add(el);
-    }
-}

src/me/topchetoeu/jscript/mapping/SourceMap.java

@@ -1,97 +1,108 @@
 package me.topchetoeu.jscript.mapping;
 
-import java.util.HashMap;
+import java.util.ArrayList;
-import java.util.Map;
+import java.util.List;
 import java.util.TreeMap;
+import java.util.stream.Collectors;
 
-import me.topchetoeu.jscript.Filename;
 import me.topchetoeu.jscript.Location;
 import me.topchetoeu.jscript.json.JSON;
 
-public class SourceMap implements LocationMap {
+public class SourceMap {
-    private final TreeMap<Location, Location> orgToSrc = new TreeMap<>();
+    private final TreeMap<Long, Long> origToComp = new TreeMap<>();
-    private final TreeMap<Location, Location> srcToOrg = new TreeMap<>();
+    private final TreeMap<Long, Long> compToOrig = new TreeMap<>();
 
-    public Location toSource(Location loc) {
+    public Location toCompiled(Location loc) { return convert(loc, origToComp); }
-        return convert(loc, orgToSrc);
+    public Location toOriginal(Location loc) { return convert(loc, compToOrig); }
+
+    private void add(long orig, long comp) {
+        var a = origToComp.remove(orig);
+        var b = compToOrig.remove(comp);
+
+        if (b != null) origToComp.remove(b);
+        if (a != null) compToOrig.remove(a);
+
+        origToComp.put(orig, comp);
+        compToOrig.put(comp, orig);
     }
 
-    public Location toOriginal(Location loc) {
+    public SourceMap apply(SourceMap map) {
-        return convert(loc, srcToOrg);
+        var res = new SourceMap();
-    }
 
-    public static Location convert(Location loc, TreeMap<Location, Location> map) {
+        for (var el : new ArrayList<>(origToComp.entrySet())) {
-        if (map.containsKey(loc)) return loc;
+            var mapped = convert(el.getValue(), map.origToComp);
-
+            add(el.getKey(), mapped);
-        var srcA = map.floorKey(loc);
-        return srcA == null ? loc : srcA;
-    }
-
-    public void chain(LocationMap map) {
-        for (var key : orgToSrc.keySet()) {
-            orgToSrc.put(key, map.toSource(key));
         }
-        for (var key : srcToOrg.keySet()) {
+        for (var el : new ArrayList<>(compToOrig.entrySet())) {
-            srcToOrg.put(map.toOriginal(key), key);
+            var mapped = convert(el.getKey(), map.compToOrig);
+            add(el.getValue(), mapped);
         }
+
+        return res;
     }
 
     public SourceMap clone() {
         var res = new SourceMap();
-        res.orgToSrc.putAll(this.orgToSrc);
+        res.origToComp.putAll(this.origToComp);
-        res.srcToOrg.putAll(this.srcToOrg);
+        res.compToOrig.putAll(this.compToOrig);
         return res;
     }
 
-    public void split(Map<Filename, TreeMap<Location, Location>> maps) {
-        for (var el : orgToSrc.entrySet()) {
-            var map = maps.get(el.getKey().filename());
-            if (map == null) maps.put(el.getKey().filename(), map = new TreeMap<>());
-            map.put(el.getKey(), el.getValue());
-
-            map = maps.get(el.getValue().filename());
-            if (map == null) maps.put(el.getValue().filename(), map = new TreeMap<>());
-            map.put(el.getValue(), el.getKey());
-        }
-    }
-
     public static SourceMap parse(String raw) {
+        var mapping = VLQ.decodeMapping(raw);
         var res = new SourceMap();
-        var json = JSON.parse(null, raw).map();
-        var sources = json.list("sources").stream().map(v -> v.string()).toArray(String[]::new);
-        var dstFilename = Filename.parse(json.string("file"));
-        var mapping = VLQ.decodeMapping(json.string("mappings"));
 
-        var srcI = 0;
+        var compRow = 0l;
-        var srcRow = 0;
+        var compCol = 0l;
-        var srcCol = 0;
 
-        for (var dstRow = 0; dstRow < mapping.length; dstRow++) {
+        for (var origRow = 0; origRow < mapping.length; origRow++) {
-            var dstCol = 0;
+            var origCol = 0;
 
-            for (var rawSeg : mapping[dstRow]) {
+            for (var rawSeg : mapping[origRow]) {
-                dstCol += rawSeg.length > 0 ? rawSeg[0] : 0;
+                if (rawSeg.length > 1 && rawSeg[1] != 0) throw new IllegalArgumentException("Source mapping is to more than one files.");
-                srcI += rawSeg.length > 1 ? rawSeg[1] : 0;
+                origCol += rawSeg.length > 0 ? rawSeg[0] : 0;
-                srcRow += rawSeg.length > 2 ? rawSeg[2] : 0;
+                compRow += rawSeg.length > 2 ? rawSeg[2] : 0;
-                srcCol += rawSeg.length > 3 ? rawSeg[3] : 0;
+                compCol += rawSeg.length > 3 ? rawSeg[3] : 0;
 
-                var src = new Location(srcRow + 1, srcCol + 1, Filename.parse(sources[srcI]));
+                var compPacked = ((long)compRow << 32) | compCol;
-                var dst = new Location(dstRow + 1, dstCol + 1, dstFilename);
+                var origPacked = ((long)origRow << 32) | origCol;
 
-                res.orgToSrc.put(src, dst);
+                res.add(origPacked, compPacked);
-                res.srcToOrg.put(dst, src);
             }
         }
 
         return res;
     }
+    public static List<String> getSources(String raw) {
+        var json = JSON.parse(null, raw).map();
+        return json
+            .list("sourcesContent")
+            .stream()
+            .map(v -> v.string())
+            .collect(Collectors.toList());
+    }
 
     public static SourceMap chain(SourceMap ...maps) {
         if (maps.length == 0) return null;
         var res = maps[0];
 
-        for (var i = 1; i < maps.length; i++) res.chain(maps[i]);
+        for (var i = 1; i < maps.length; i++) res = res.apply(maps[i]);
 
         return res;
     }
+
+    private static Long convert(long packed, TreeMap<Long, Long> map) {
+        if (map.containsKey(packed)) return map.get(packed);
+        var key = map.floorKey(packed);
+        if (key == null) return null;
+        else return map.get(key);
+    }
+
+    private static Location convert(Location loc, TreeMap<Long, Long> map) {
+        var packed = ((loc.line() - 1l) << 32) | (loc.start() - 1);
+        var resPacked = convert(packed, map);
+
+        if (resPacked == null) return null;
+        else return new Location((int)(resPacked >> 32) + 1, (int)(resPacked & 0xFFFF) + 1, loc.filename());
+    }
 }

src/me/topchetoeu/jscript/parsing/Parsing.java

@@ -17,8 +17,7 @@ import me.topchetoeu.jscript.compilation.control.SwitchStatement.SwitchCase;
 import me.topchetoeu.jscript.compilation.values.*;
 import me.topchetoeu.jscript.engine.Environment;
 import me.topchetoeu.jscript.engine.Operation;
-import me.topchetoeu.jscript.engine.scope.ValueVariable;
+import me.topchetoeu.jscript.engine.scope.LocalScopeRecord;
-import me.topchetoeu.jscript.engine.values.CodeFunction;
 import me.topchetoeu.jscript.engine.values.Values;
 import me.topchetoeu.jscript.exceptions.SyntaxException;
 import me.topchetoeu.jscript.parsing.ParseRes.State;
@@ -806,9 +805,11 @@ public class Parsing {
         if (!res.isSuccess()) return ParseRes.error(loc, "Expected a compound statement for property accessor.", res);
         n += res.n;
 
+        var end = getLoc(filename, tokens, i + n - 1);
+
         return ParseRes.res(new ObjProp(
             name, access,
-            new FunctionStatement(loc, access + " " + name.toString(), argsRes.result.toArray(String[]::new), false, res.result)
+            new FunctionStatement(loc, end, access + " " + name.toString(), argsRes.result.toArray(String[]::new), false, res.result)
         ), n);
     }
     public static ParseRes<ObjectStatement> parseObject(Filename filename, List<Token> tokens, int i) {
@@ -868,7 +869,7 @@ public class Parsing {
 
         return ParseRes.res(new ObjectStatement(loc, values, getters, setters), n);
     }
-    public static ParseRes<NewStatement> parseNew(Filename filename, List<Token> tokens, int i) {
+    public static ParseRes<CallStatement> parseNew(Filename filename, List<Token> tokens, int i) {
         var loc = getLoc(filename, tokens, i);
         var n = 0;
         if (!isIdentifier(tokens, i + n++, "new")) return ParseRes.failed();
@@ -879,10 +880,10 @@ public class Parsing {
         var callRes = parseCall(filename, tokens, i + n, valRes.result, 0);
         n += callRes.n;
         if (callRes.isError()) return callRes.transform();
-        else if (callRes.isFailed()) return ParseRes.res(new NewStatement(loc, valRes.result), n);
+        else if (callRes.isFailed()) return ParseRes.res(new CallStatement(loc, false, valRes.result), n);
         var call = (CallStatement)callRes.result;
 
-        return ParseRes.res(new NewStatement(loc, call.func, call.args), n);
+        return ParseRes.res(new CallStatement(loc, true, call.func, call.args), n);
     }
     public static ParseRes<TypeofStatement> parseTypeof(Filename filename, List<Token> tokens, int i) {
         var loc = getLoc(filename, tokens, i);
@@ -895,7 +896,7 @@ public class Parsing {
 
         return ParseRes.res(new TypeofStatement(loc, valRes.result), n);
     }
-    public static ParseRes<VoidStatement> parseVoid(Filename filename, List<Token> tokens, int i) {
+    public static ParseRes<DiscardStatement> parseVoid(Filename filename, List<Token> tokens, int i) {
         var loc = getLoc(filename, tokens, i);
         var n = 0;
         if (!isIdentifier(tokens, i + n++, "void")) return ParseRes.failed();
@@ -904,7 +905,7 @@ public class Parsing {
         if (!valRes.isSuccess()) return ParseRes.error(loc, "Expected a value after 'void' keyword.", valRes);
         n += valRes.n;
 
-        return ParseRes.res(new VoidStatement(loc, valRes.result), n);
+        return ParseRes.res(new DiscardStatement(loc, valRes.result), n);
     }
     public static ParseRes<? extends Statement> parseDelete(Filename filename, List<Token> tokens, int i) {
         var loc = getLoc(filename, tokens, i);
@@ -965,8 +966,9 @@ public class Parsing {
 
         var res = parseCompound(filename, tokens, i + n);
         n += res.n;
+        var end = getLoc(filename, tokens, i + n - 1);
 
-        if (res.isSuccess()) return ParseRes.res(new FunctionStatement(loc, name, args.toArray(String[]::new), statement, res.result), n);
+        if (res.isSuccess()) return ParseRes.res(new FunctionStatement(loc, end, name, args.toArray(String[]::new), statement, res.result), n);
         else return ParseRes.error(loc, "Expected a compound statement for function.", res);
     }
 
@@ -1186,7 +1188,7 @@ public class Parsing {
             else return ParseRes.failed();
         }
 
-        return ParseRes.res(new CallStatement(loc, prev, args.toArray(Statement[]::new)), n);
+        return ParseRes.res(new CallStatement(loc, false, prev, args.toArray(Statement[]::new)), n);
     }
     public static ParseRes<ChangeStatement> parsePostfixChange(Filename filename, List<Token> tokens, int i, Statement prev, int precedence) {
         var loc = getLoc(filename, tokens, i);
@@ -1232,7 +1234,7 @@ public class Parsing {
 
         return ParseRes.res(new OperationStatement(loc, Operation.IN, prev, valRes.result), n);
     }
-    public static ParseRes<CommaStatement> parseComma(Filename filename, List<Token> tokens, int i, Statement prev, int precedence) {
+    public static ParseRes<CompoundStatement> parseComma(Filename filename, List<Token> tokens, int i, Statement prev, int precedence) {
         var loc = getLoc(filename, tokens, i);
         var n = 0;
 
@@ -1243,7 +1245,7 @@ public class Parsing {
         if (!res.isSuccess()) return ParseRes.error(loc, "Expected a value after the comma.", res);
         n += res.n;
 
-        return ParseRes.res(new CommaStatement(loc, prev, res.result), n);
+        return ParseRes.res(new CompoundStatement(loc, false, prev, res.result), n);
     }
     public static ParseRes<IfStatement> parseTernary(Filename filename, List<Token> tokens, int i, Statement prev, int precedence) {
         var loc = getLoc(filename, tokens, i);
@@ -1509,7 +1511,7 @@ public class Parsing {
             statements.add(res.result);
         }
 
-        return ParseRes.res(new CompoundStatement(loc, statements.toArray(Statement[]::new)).setEnd(getLoc(filename, tokens, i + n - 1)), n);
+        return ParseRes.res(new CompoundStatement(loc, true, statements.toArray(Statement[]::new)).setEnd(getLoc(filename, tokens, i + n - 1)), n);
     }
     public static ParseRes<String> parseLabel(List<Token> tokens, int i) {
         int n = 0;
@@ -1690,7 +1692,7 @@ public class Parsing {
 
         if (isOperator(tokens, i + n, Operator.SEMICOLON)) {
             n++;
-            decl = new CompoundStatement(loc);
+            decl = new CompoundStatement(loc, false);
         }
         else {
             var declRes = ParseRes.any(
@@ -1716,7 +1718,7 @@ public class Parsing {
 
         if (isOperator(tokens, i + n, Operator.PAREN_CLOSE)) {
             n++;
-            inc = new CompoundStatement(loc);
+            inc = new CompoundStatement(loc, false);
         }
         else {
             var incRes = parseValue(filename, tokens, i + n, 0);
@@ -1829,7 +1831,7 @@ public class Parsing {
     }
 
     public static ParseRes<? extends Statement> parseStatement(Filename filename, List<Token> tokens, int i) {
-        if (isOperator(tokens, i, Operator.SEMICOLON)) return ParseRes.res(new CompoundStatement(getLoc(filename, tokens, i)), 1);
+        if (isOperator(tokens, i, Operator.SEMICOLON)) return ParseRes.res(new CompoundStatement(getLoc(filename, tokens, i), false), 1);
         if (isIdentifier(tokens, i, "with")) return ParseRes.error(getLoc(filename, tokens, i), "'with' statements are not allowed.");
         return ParseRes.any(
             parseVariableDeclare(filename, tokens, i),
@@ -1872,38 +1874,30 @@ public class Parsing {
         return list.toArray(Statement[]::new);
     }
 
-    public static CodeFunction compile(HashMap<Long, FunctionBody> funcs, TreeSet<Location> breakpoints, Environment environment, Statement ...statements) {
+    public static CompileTarget compile(Environment environment, Statement ...statements) {
-        var target = environment.global.globalChild();
+        var subscope = new LocalScopeRecord();
-        var subscope = target.child();
+        var target = new CompileTarget(new HashMap<>(), new TreeSet<>());
-        var res = new CompileTarget(funcs, breakpoints);
+        var stm = new CompoundStatement(null, true, statements);
-        var body = new CompoundStatement(null, statements);
-        if (body instanceof CompoundStatement) body = (CompoundStatement)body;
-        else body = new CompoundStatement(null, new Statement[] { body });
 
         subscope.define("this");
         subscope.define("arguments");
 
-        body.declare(target);
-
         try {
-            body.compile(res, subscope, true);
+            stm.compile(target, subscope, true);
-            FunctionStatement.checkBreakAndCont(res, 0);
+            FunctionStatement.checkBreakAndCont(target, 0);
         }
         catch (SyntaxException e) {
-            res.target.clear();
+            target.target.clear();
-            res.add(Instruction.throwSyntax(e.loc, e));
+            target.add(Instruction.throwSyntax(e.loc, e));
         }
 
-        res.add(Instruction.ret(body.loc()));
+        target.add(Instruction.ret(stm.loc()));
+        target.functions.put(0l, new FunctionBody(subscope.localsCount(), 0, target.array(), subscope.captures(), subscope.locals()));
 
-        return new CodeFunction(environment, "", new FunctionBody(subscope.localsCount(), 0, res.array(), subscope.captures(), subscope.locals()), new ValueVariable[0]);
+        return target;
     }
-    public static CodeFunction compile(HashMap<Long, FunctionBody> funcs, TreeSet<Location> breakpoints, Environment environment, Filename filename, String raw) {
+    public static CompileTarget compile(Environment environment, Filename filename, String raw) {
-        try {
+        try { return compile(environment, parse(filename, raw)); }
-            return compile(funcs, breakpoints, environment, parse(filename, raw));
+        catch (SyntaxException e) { return compile(environment, new ThrowSyntaxStatement(e)); }
-        }
-        catch (SyntaxException e) {
-            return new CodeFunction(environment, null, new FunctionBody(Instruction.throwSyntax(e.loc, e)));
-        }
     }
 }

test.txt

@@ -0,0 +1,80 @@
+const { spawn } = require('child_process');
+const fs = require('fs/promises');
+const pt = require('path');
+const { argv, exit } = require('process');
+
+const conf = {
+    name: "java-jscript",
+    author: "TopchetoEU",
+    javahome: "",
+    version: argv[3]
+};
+
+if (conf.version.startsWith('refs/tags/')) conf.version = conf.version.substring(10);
+if (conf.version.startsWith('v')) conf.version = conf.version.substring(1);
+
+async function* find(src, dst, wildcard) {
+    const stat = await fs.stat(src);
+
+    if (stat.isDirectory()) {
+        for (const el of await fs.readdir(src)) {
+            for await (const res of find(pt.join(src, el), dst ? pt.join(dst, el) : undefined, wildcard)) yield res;
+        }
+    }
+    else if (stat.isFile() && wildcard(src)) yield dst ? { src, dst } : src;
+}
+async function copy(src, dst, wildcard) {
+    const promises = [];
+
+    for await (const el of find(src, dst, wildcard)) {
+        promises.push((async () => {
+            await fs.mkdir(pt.dirname(el.dst), { recursive: true });
+            await fs.copyFile(el.src, el.dst);
+        })());
+    }
+
+    await Promise.all(promises);
+}
+
+function run(cmd, ...args) {
+    return new Promise((res, rej) => {
+        const proc = spawn(cmd, args, { stdio: 'inherit' });
+        proc.once('exit', code => {
+            if (code === 0) res(code);
+            else rej(new Error(`Process ${cmd} exited with code ${code}.`));
+        });
+    })
+}
+
+async function compileJava() {
+    try {
+        await fs.writeFile('Metadata.java', (await fs.readFile('src/me/topchetoeu/jscript/Metadata.java')).toString()
+            .replace('${VERSION}', conf.version)
+            .replace('${NAME}', conf.name)
+            .replace('${AUTHOR}', conf.author)
+        );
+        const args = ['--release', '11', ];
+        if (argv[2] === 'debug') args.push('-g');
+        args.push('-d', 'dst/classes', 'Metadata.java');
+    
+        for await (const path of find('src', undefined, v => v.endsWith('.java') && !v.endsWith('Metadata.java'))) args.push(path);
+        await run(conf.javahome + 'javac', ...args);
+    }
+    finally {
+        await fs.rm('Metadata.java');
+    }
+}
+
+(async () => {
+    try {
+        try { await fs.rm('dst', { recursive: true }); } catch {}
+        await copy('src', 'dst/classes', v => !v.endsWith('.java'));
+        await compileJava();
+        await run('jar', '-c', '-f', 'dst/jscript.jar', '-e', 'me.topchetoeu.jscript.Main', '-C', 'dst/classes', '.');
+    }
+    catch (e) {
+        if (argv[2] === 'debug') throw e;
+        console.log(e.toString());
+        exit(-1);
+    }
+})();