feat: make Function constructor

gradle.properties

@@ -1,4 +1,4 @@
 project_group = me.topchetoeu
 project_name = jscript
-project_version = 0.9.27-beta
+project_version = 0.9.41-beta
 main_class = me.topchetoeu.jscript.utils.JScriptRepl

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

@@ -10,7 +10,7 @@ public class ContinueStatement extends Statement {
 
     @Override
     public void compile(CompileResult target, boolean pollute) {
-        target.add(Instruction.nop(loc(), "cont", label));
+        target.add(Instruction.nop("cont", label));
         if (pollute) target.add(Instruction.pushUndefined());
     }
 

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

@@ -51,7 +51,7 @@ public class FilesystemLib {
 
             try {
                 if (fs.stat(path).type != EntryType.FILE) {
-                    throw new FilesystemException(ErrorReason.DOESNT_EXIST, "Not a file").setAction(ActionType.OPEN);
+                    throw new FilesystemException(ErrorReason.DOESNT_EXIST, "Not a file").setAction(ActionType.OPEN).setPath(path);
                 }
 
                 return new FileLib(fs.open(path, _mode));

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

@@ -1,16 +1,24 @@
 package me.topchetoeu.jscript.lib;
 
+import me.topchetoeu.jscript.common.Filename;
+import me.topchetoeu.jscript.runtime.Compiler;
+import me.topchetoeu.jscript.runtime.Context;
+import me.topchetoeu.jscript.runtime.scope.ValueVariable;
 import me.topchetoeu.jscript.runtime.values.ArrayValue;
 import me.topchetoeu.jscript.runtime.values.CodeFunction;
 import me.topchetoeu.jscript.runtime.values.FunctionValue;
 import me.topchetoeu.jscript.runtime.values.NativeFunction;
+import me.topchetoeu.jscript.runtime.values.Values;
 import me.topchetoeu.jscript.utils.interop.Arguments;
 import me.topchetoeu.jscript.utils.interop.Expose;
+import me.topchetoeu.jscript.utils.interop.ExposeConstructor;
 import me.topchetoeu.jscript.utils.interop.ExposeTarget;
 import me.topchetoeu.jscript.utils.interop.WrapperName;
 
 @WrapperName("Function")
 public class FunctionLib {
+    private static int i;
+
     @Expose public static Object __apply(Arguments args) {
         return args.self(FunctionValue.class).call(args.ctx, args.get(0), args.convert(1, ArrayValue.class).toArray());
     }
@@ -51,4 +59,25 @@ public class FunctionLib {
     public static FunctionValue __generator(Arguments args) {
         return new GeneratorFunctionLib(args.convert(0, CodeFunction.class));
     }
+
+    @ExposeConstructor
+    public static Object __constructor(Arguments args) {
+        var compiler = Compiler.get(args);
+
+        var parts = args.convert(String.class);
+        if (parts.length == 0) parts = new String[] { "" };
+
+        var src = "return function(";
+
+        for (var i = 0; i < parts.length - 1; i++) {
+            if (i != 0) src += ",";
+            src += parts[i];
+        }
+
+        src += "){" + parts[parts.length - 1] + "}";
+
+        var body = compiler.compile(new Filename("jscript", "func/" + i++), src);
+        var func = new CodeFunction(Context.clean(args.ctx), "", body, new ValueVariable[0]);
+        return Values.call(args, func, null);
+    }
 }

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

@@ -92,7 +92,7 @@ public class Context implements Extensions {
         return new Context(ext);
     }
     public static Extensions clean(Extensions ext) {
-        if (ext instanceof Context) return ((Context)ext).extensions;
+        if (ext instanceof Context) return clean(((Context)ext).extensions);
         else return ext;
     }
 }

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

@@ -20,7 +20,7 @@ public class GlobalScope {
         return Values.hasMember(ext, obj, name, false);
     }
 
-    public GlobalScope globalChild() {
+    public GlobalScope child() {
         var obj = new ObjectValue();
         Values.setPrototype(null, obj, this.obj);
         return new GlobalScope(obj);

src/java/me/topchetoeu/jscript/utils/JScriptRepl.java

@@ -89,7 +89,6 @@ public class JScriptRepl {
     private static void initEnv() {
         environment = Internals.apply(environment);
 
-        var wp = NativeWrapperProvider.get(environment);
         var glob = GlobalScope.get(environment);
 
         glob.define(null, false, new NativeFunction("exit", args -> {

src/java/me/topchetoeu/jscript/utils/debug/SimpleDebugger.java

@@ -397,7 +397,7 @@ public class SimpleDebugger implements Debugger {
                 catch (Exception e) { }
 
                 try { res.set("description", className + (defaultToString ? "" : " { " + Values.toString(ctx, obj) + " }")); }
-                catch (EngineException e) {  }
+                catch (Exception e) { }
             }
 
 

src/java/me/topchetoeu/jscript/utils/filesystem/BaseFile.java

@@ -32,7 +32,7 @@ public abstract class BaseFile<T> implements File {
     @Override public synchronized long seek(long offset, int pos) {
         try {
             if (handle == null) throw new FilesystemException(ErrorReason.CLOSED);
-            if (!mode.writable) throw new FilesystemException(ErrorReason.NO_PERMISSION, "File not open for seeking.");
+            if (mode == Mode.NONE) throw new FilesystemException(ErrorReason.NO_PERMISSION, "File not open for seeking.");
             return onSeek(offset, pos);
         }
         catch (FilesystemException e) { throw e.setAction(ActionType.SEEK); }

src/java/me/topchetoeu/jscript/utils/filesystem/FilesystemException.java

@@ -54,16 +54,12 @@ public class FilesystemException extends RuntimeException {
     @Override public String getMessage() {
         var parts = new ArrayList<String>(10);
 
-        path = String.join(" ", parts).trim();
-        if (path.isEmpty()) path = null;
-        parts.clear();
-
         parts.add(action == null ? "An action performed upon " : action.readable(reason.usePast));
 
         if (entry == EntryType.FILE) parts.add("file");
         if (entry == EntryType.FOLDER) parts.add("folder");
 
-        if (path != null) parts.add(path);
+        if (path != null && !path.isBlank()) parts.add(path.trim());
 
         parts.add(reason.readable);
 

src/java/me/topchetoeu/jscript/utils/filesystem/PhysicalFilesystem.java

@@ -1,5 +1,6 @@
 package me.topchetoeu.jscript.utils.filesystem;
 
+import java.io.FileNotFoundException;
 import java.io.IOException;
 import java.nio.file.FileAlreadyExistsException;
 import java.nio.file.Files;
@@ -35,7 +36,8 @@ public class PhysicalFilesystem implements Filesystem {
                 ));
                 else return handles.put(new PhysicalFile(path, perms));
             }
-            catch (IOException e) { throw new FilesystemException(ErrorReason.DOESNT_EXIST); }
+            catch (FileNotFoundException e) { throw new FilesystemException(ErrorReason.DOESNT_EXIST); }
+            catch (IOException e) { throw new FilesystemException(ErrorReason.NO_PERMISSION); }
         }
         catch (FilesystemException e) { throw e.setAction(ActionType.OPEN).setPath(_path); }
     }
@@ -68,12 +70,7 @@ public class PhysicalFilesystem implements Filesystem {
 
         if (!Files.exists(path)) return new FileStat(Mode.NONE, EntryType.NONE);
 
-        var perms = Mode.NONE;
+        var perms = Mode.of(Files.isReadable(path), Files.isWritable(path));
-
-        if (Files.isReadable(path)) {
-            if (Files.isWritable(path)) perms = Mode.READ_WRITE;
-            else perms = Mode.READ;
-        }
 
         if (perms == Mode.NONE) return new FileStat(Mode.NONE, EntryType.NONE);
 

src/java/me/topchetoeu/jscript/utils/interop/NativeWrapperProvider.java

@@ -4,10 +4,12 @@ import java.lang.reflect.InvocationTargetException;
 import java.lang.reflect.Member;
 import java.lang.reflect.Method;
 import java.lang.reflect.Modifier;
+import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.HashMap;
 import java.util.HashSet;
 import java.util.stream.Collectors;
+import java.util.stream.Stream;
 
 import me.topchetoeu.jscript.common.Location;
 import me.topchetoeu.jscript.runtime.Context;
@@ -30,6 +32,7 @@ public class NativeWrapperProvider implements Copyable {
     private final HashMap<Class<?>, ObjectValue> namespaces = new HashMap<>();
     private final HashMap<Class<?>, Class<?>> classToProxy = new HashMap<>();
     private final HashMap<Class<?>, Class<?>> proxyToClass = new HashMap<>();
+    private final HashMap<Class<?>, Class<?>> interfaceToProxy = new HashMap<>();
     private final HashSet<Class<?>> ignore = new HashSet<>();
 
     private static Object call(Context ctx, String name, Method method, Object thisArg, Object... args) {
@@ -83,10 +86,16 @@ public class NativeWrapperProvider implements Copyable {
             String.join(", ", Arrays.stream(actual).map(v -> v.getName()).collect(Collectors.toList()))
         ));
     }
-    private static String getName(Class<?> clazz) {
+    private static String getName(Class<?> ...classes) {
-        var classNat = clazz.getAnnotation(WrapperName.class);
+        String last = null;
-        if (classNat != null && !classNat.value().trim().equals("")) return classNat.value().trim();
+
-        else return clazz.getSimpleName();
+        for (var clazz : classes) {
+            var classNat = clazz.getAnnotation(WrapperName.class);
+            if (classNat != null && !classNat.value().trim().equals("")) return classNat.value().trim();
+            else if (last != null) last = clazz.getSimpleName();
+        }
+
+        return last;
     }
 
     private static void checkUnderscore(Member member) {
@@ -120,13 +129,13 @@ public class NativeWrapperProvider implements Copyable {
 
         for (var method : clazz.getDeclaredMethods()) {
             for (var annotation : method.getAnnotationsByType(Expose.class)) {
+                any = true;
                 if (!annotation.target().shouldApply(target)) continue;
 
                 checkUnderscore(method);
                 var name = getName(method, annotation.value());
                 var key = getKey(name);
                 var repeat = false;
-                any = true;
 
                 switch (annotation.type()) {
                     case METHOD:
@@ -162,13 +171,13 @@ public class NativeWrapperProvider implements Copyable {
                 ));
             }
             for (var annotation : method.getAnnotationsByType(ExposeField.class)) {
+                any = true;
                 if (!annotation.target().shouldApply(target)) continue;
 
                 checkUnderscore(method);
                 var name = getName(method, annotation.value());
                 var key = getKey(name);
                 var repeat = false;
-                any = true;
 
                 if (props.contains(key) || nonProps.contains(key)) repeat = true;
                 else {
@@ -191,13 +200,13 @@ public class NativeWrapperProvider implements Copyable {
         }
         for (var field : clazz.getDeclaredFields()) {
             for (var annotation : field.getAnnotationsByType(ExposeField.class)) {
+                any = true;
                 if (!annotation.target().shouldApply(target)) continue;
 
                 checkUnderscore(field);
                 var name = getName(field, annotation.value());
                 var key = getKey(name);
                 var repeat = false;
-                any = true;
 
                 if (props.contains(key) || nonProps.contains(key)) repeat = true;
                 else {
@@ -237,12 +246,23 @@ public class NativeWrapperProvider implements Copyable {
 
         return any;
     }
+    private static boolean apply(ObjectValue obj, ExposeTarget target, Class<?> ...appliers) {
+        var res = false;
 
-    private static Method getConstructor(Class<?> clazz) {
+        for (var i = appliers.length - 1; i >= 0; i--) {
-        for (var method : clazz.getDeclaredMethods()) {
+            res |= apply(obj, target, appliers[i]);
-            if (!method.isAnnotationPresent(ExposeConstructor.class)) continue;
+        }
-            checkSignature(method, true, Arguments.class);
+
-            return method;
+        return res;
+    }
+
+    private static Method getConstructor(Class<?> ...appliers) {
+        for (var clazz : appliers) {
+            for (var method : clazz.getDeclaredMethods()) {
+                if (!method.isAnnotationPresent(ExposeConstructor.class)) continue;
+                checkSignature(method, true, Arguments.class);
+                return method;
+            }
         }
 
         return null;
@@ -254,10 +274,10 @@ public class NativeWrapperProvider implements Copyable {
      * All accessors and methods will expect the this argument to be a native wrapper of the given class type.
      * @param clazz The class for which a prototype should be generated
      */
-    public static ObjectValue makeProto(Class<?> clazz) {
+    public static ObjectValue makeProto(Class<?> ...appliers) {
         var res = new ObjectValue();
-        res.defineProperty(null, Symbol.get("Symbol.typeName"), getName(clazz));
+        res.defineProperty(null, Symbol.get("Symbol.typeName"), getName(appliers));
-        if (!apply(res, ExposeTarget.PROTOTYPE, clazz)) return null;
+        if (!apply(res, ExposeTarget.PROTOTYPE, appliers)) return null;
         return res;
     }
     /**
@@ -266,14 +286,14 @@ public class NativeWrapperProvider implements Copyable {
      * When the function gets called, the underlying constructor will get called, unless the constructor is inaccessible.
      * @param clazz The class for which a constructor should be generated
      */
-    public static FunctionValue makeConstructor(Class<?> clazz) {
+    public static FunctionValue makeConstructor(Class<?> ...appliers) {
-        var constr = getConstructor(clazz);
+        var constr = getConstructor(appliers);
 
         FunctionValue res = constr == null ?
-            new NativeFunction(getName(clazz), args -> { throw EngineException.ofError("This constructor is not invokable."); }) :
+            new NativeFunction(getName(appliers), args -> { throw EngineException.ofError("This constructor is not invokable."); }) :
-            create(getName(clazz), constr);
+            create(getName(appliers), constr);
 
-        apply(res, ExposeTarget.CONSTRUCTOR, clazz);
+        if (!apply(res, ExposeTarget.CONSTRUCTOR, appliers) && constr == null) return null;
 
         return res;
     }
@@ -283,13 +303,27 @@ public class NativeWrapperProvider implements Copyable {
      * This method behaves almost like {@link NativeWrapperProvider#makeConstructor}, but will return an object instead.
      * @param clazz The class for which a constructor should be generated
      */
-    public static ObjectValue makeNamespace(Class<?> clazz) {
+    public static ObjectValue makeNamespace(Class<?> ...appliers) {
         var res = new ObjectValue();
-        res.defineProperty(null, Symbol.get("Symbol.typeName"), getName(clazz));
+
-        if (!apply(res, ExposeTarget.NAMESPACE, clazz)) return null;
+        if (!apply(res, ExposeTarget.NAMESPACE, appliers)) return null;
+
         return res;
     }
 
+    private Class<?>[] getAppliers(Class<?> clazz) {
+        var res = new ArrayList<Class<?>>();
+
+        res.add(clazz);
+
+        if (classToProxy.containsKey(clazz)) res.add(classToProxy.get(clazz));
+        for (var intf : interfaceToProxy.keySet()) {
+            if (intf.isAssignableFrom(clazz)) res.add(interfaceToProxy.get(intf));
+        }
+
+        return res.toArray(Class<?>[]::new);
+    }
+
     private void updateProtoChain(Class<?> clazz, ObjectValue proto, FunctionValue constr) {
         var parent = clazz;
 
@@ -326,8 +360,10 @@ public class NativeWrapperProvider implements Copyable {
             clazz.isSynthetic()
         ) return;
 
-        if (constr == null) constr = makeConstructor(clazz);
+        var appliers = getAppliers(clazz);
-        if (proto == null) proto = makeProto(clazz);
+
+        if (constr == null) constr = makeConstructor(appliers);
+        if (proto == null) proto = makeProto(appliers);
 
         if (constr == null || proto == null) return;
 
@@ -386,30 +422,29 @@ public class NativeWrapperProvider implements Copyable {
 
     public void set(Class<?> clazz, Class<?> wrapper) {
         if (clazz == null) return;
-        if (wrapper == null) wrapper = clazz;
-        if (classToProxy.get(clazz) == wrapper) return;
 
-        classToProxy.remove(wrapper);
+        if (clazz.isInterface()) {
-        proxyToClass.remove(clazz);
+            if (wrapper == null || wrapper == clazz) interfaceToProxy.remove(clazz);
+            else interfaceToProxy.put(clazz, wrapper);
+        }
+        else {
+            if (wrapper == null || wrapper == clazz) classToProxy.remove(clazz);
+            else classToProxy.put(clazz, wrapper);
+        }
 
-        classToProxy.put(clazz, wrapper);
+        var classes = Stream.concat(
-        proxyToClass.put(wrapper, clazz);
+            Stream.of(clazz),
+            prototypes.keySet().stream().filter(clazz::isAssignableFrom)
+        ).toArray(Class<?>[]::new);
 
-        ignore.remove(clazz);
+        for (var el : classes) {
+            prototypes.remove(el);
+            constructors.remove(el);
+            namespaces.remove(el);
+        }
 
-        var proto = makeProto(wrapper);
+        for (var el : classes) {
-        var constr = makeConstructor(wrapper);
+            initType(el, null, null);
-
-        prototypes.put(clazz, proto);
-        constructors.put(clazz, constr);
-
-        proto.defineProperty(null, "constructor", constr, true, false, false);
-        constr.defineProperty(null, "prototype", proto, true, false, false);
-
-        for (var el : prototypes.keySet()) {
-            if (clazz.isAssignableFrom(el)) {
-                updateProtoChain(el, getProto(el), getConstr(el));
-            }
         }
     }
 

src/java/me/topchetoeu/jscript/utils/modules/ModuleRepo.java

@@ -6,6 +6,7 @@ import me.topchetoeu.jscript.common.Filename;
 import me.topchetoeu.jscript.runtime.Context;
 import me.topchetoeu.jscript.runtime.Extensions;
 import me.topchetoeu.jscript.runtime.Key;
+import me.topchetoeu.jscript.runtime.scope.GlobalScope;
 import me.topchetoeu.jscript.utils.filesystem.Filesystem;
 import me.topchetoeu.jscript.utils.filesystem.Mode;
 
@@ -25,8 +26,10 @@ public interface ModuleRepo {
 
             if (modules.containsKey(name)) return modules.get(name);
 
-            var env = ctx.extensions.child();
+            var env = Context.clean(ctx.extensions).child();
             env.add(CWD, fs.normalize(name, ".."));
+            var glob = env.get(GlobalScope.KEY);
+            env.add(GlobalScope.KEY, glob.child());
 
             var mod = new SourceModule(filename, src, env);
             modules.put(name, mod);