Refactor reflection support

Author: konsoletyper

classlib/src/main/java/org/teavm/classlib/java/lang/TClass.java

@@ -231,9 +231,7 @@ private void init() {
     }
 
     @Rename("getClass")
-    public final TClass<?> getClass0() {
-        return TClass.getClass(Platform.getPlatformObject(this).getPlatformClass());
-    }
+    public final native TClass<?> getClass0();
 
     @Override
     public int hashCode() {

classlib/src/main/java/org/teavm/classlib/java/lang/TObject.java

@@ -63,7 +63,7 @@ public static TObject newInstance(Class<?> componentType, int length) throws TNe
         if (PlatformDetector.isWebAssemblyGC()) {
             return newInstanceImpl(componentType, length);
         } else {
-            return newInstanceImpl(((TClass<?>) (Object) componentType).getPlatformClass(), length);
+            return newInstanceImpl(((TClass<?>) (Object) componentType).getClassInfo(), length);
         }
     }
 

classlib/src/main/java/org/teavm/classlib/java/lang/reflect/TArray.java

@@ -102,7 +102,7 @@ public Object invoke(Object obj, Object... args) throws TIllegalAccessException,
                 throw new TIllegalArgumentException();
             }
         } else if (PlatformDetector.isJavaScript()) {
-            Platform.initClass(declaringClass.getPlatformClass());
+            Platform.initClass(declaringClass.getClassInfo());
         }
 
         for (int i = 0; i < args.length; ++i) {

classlib/src/main/java/org/teavm/classlib/java/lang/reflect/TMethod.java

@@ -48,7 +48,7 @@ static Enum<?>[] getConstants(Class<?> cls) {
         if (PlatformDetector.isWebAssemblyGC()) {
             return ClassSupport.getEnumConstants(cls);
         } else {
-            PlatformClass platformClass = ((TClass<?>) (Object) cls).getPlatformClass();
+            PlatformClass platformClass = ((TClass<?>) (Object) cls).getClassInfo();
             Platform.initClass(platformClass);
             return Platform.getEnumConstants(platformClass);
         }

classlib/src/main/java/org/teavm/classlib/java/util/TGenericEnumSet.java

@@ -48,7 +48,7 @@ public TIterator<S> iterator() {
     public static <S> TServiceLoader<S> load(TClass<S> service) {
         return new TServiceLoader<>(PlatformDetector.isWebAssemblyGC()
                 ? doLoadServices(service)
-                : doLoadServices(service.getPlatformClass()));
+                : doLoadServices(service.getClassInfo()));
     }
 
     public static <S> TServiceLoader<S> load(TClass<S> service, @SuppressWarnings("unused") TClassLoader loader) {

classlib/src/main/java/org/teavm/classlib/java/util/TServiceLoader.java

@@ -0,0 +1,20 @@
+/*
+ *  Copyright 2026 Alexey Andreev.
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *       http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ */
+package org.teavm.runtime;
+
+public class ObjectInfo {
+    public native Object getObject();
+}

core/src/main/java/org/teavm/runtime/ObjectInfo.java

@@ -65,7 +65,8 @@ public class RuntimeClass extends RuntimeObject {
     public int tag;
     public int canary;
     public RuntimeObjectPtr name;
-    public RuntimeObject nameCache;
+    public RuntimeObjectPtr simpleName;
+
     public RuntimeClass itemType;
     public RuntimeClass arrayType;
     public RuntimeClass declaringClass;
@@ -77,10 +78,7 @@ public class RuntimeClass extends RuntimeObject {
     public RuntimeClassPointer superinterfaces;
     public Address enumValues;
     public Address layout;
-    public RuntimeObjectPtr simpleName;
-    public RuntimeObject simpleNameCache;
-    public RuntimeObject canonicalName;
-    public RuntimeObject reflectionState;
+    public RuntimeObject classObject;
 
     @Unmanaged
     public static int computeCanary(int size, int tag) {

core/src/main/java/org/teavm/runtime/RuntimeClass.java

@@ -0,0 +1,20 @@
+/*
+ *  Copyright 2026 Alexey Andreev.
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *       http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ */
+package org.teavm.runtime;
+
+public class StringInfo {
+    public native String getStringObject();
+}

core/src/main/java/org/teavm/runtime/StringInfo.java

@@ -0,0 +1,76 @@
+/*
+ *  Copyright 2026 Alexey Andreev.
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *       http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ */
+package org.teavm.runtime.reflect;
+
+import org.teavm.runtime.StringInfo;
+
+public class ClassInfo {
+    public static final int ABSTRACT = 1;
+    public static final int INTERFACE = 1 << 1;
+    public static final int FINAL = 1 << 2;
+    public static final int ENUM = 1 << 3;
+    public static final int ANNOTATION = 1 << 4;
+    public static final int SYNTHETIC = 1 << 5;
+    public static final int BRIDGE = 1 << 6;
+    public static final int DEPRECATED = 1 << 7;
+    public static final int NATIVE = 1 << 8;
+    public static final int STATIC = 1 << 9;
+    public static final int STRICT = 1 << 10;
+    public static final int SYNCHRONIZED = 1 << 11;
+    public static final int TRANSIENT = 1 << 12;
+    public static final int VARARGS = 1 << 13;
+    public static final int VOLATILE = 1 << 14;
+    public static final int INHERITED_ANNOTATION = 1 << 15;
+
+    public static final int NOT_PRIMITIVE = 0;
+    public static final int BOOLEAN_PRIMITIVE = 1;
+    public static final int BYTE_PRIMITIVE = 2;
+    public static final int SHORT_PRIMITIVE = 3;
+    public static final int CHAR_PRIMITIVE = 4;
+    public static final int INT_PRIMITIVE = 5;
+    public static final int LONG_PRIMITIVE = 6;
+    public static final int FLOAT_PRIMITIVE = 7;
+    public static final int DOUBLE_PRIMITIVE = 8;
+    public static final int VOID_PRIMITIVE = 9;
+
+    public native int modifiers();
+
+    public native int primitiveKind();
+
+    public native StringInfo name();
+
+    public native StringInfo simpleName();
+
+    public native ClassInfo itemType();
+
+    public native ClassInfo arrayType();
+
+    public native ClassInfo declaringClass();
+
+    public native ClassInfo enclosingClass();
+
+    public native boolean isSuperTypeOf(ClassInfo subtype);
+
+    public native void init();
+
+    public native ClassInfo parent();
+
+    public native int superinterfaceCount();
+
+    public native ClassInfo superinterface(int index);
+
+    public native Class<?> classObject();
+}