Enforce rawType to be a Class in ParameterizedTypeImpl

Enforce rawType to be a Class in ParameterizedTypeImpl

Enforce rawType to be a Class in ParameterizedTypeImpl

Enforce rawType to be a Class in ParameterizedTypeImpl

Enforce rawType to be a Class in ParameterizedTypeImpl

Enforce rawType to be a Class in ParameterizedTypeImpl

Enforce rawType to be a Class in ParameterizedTypeImpl

Author: panic08

gson/src/main/java/com/google/gson/internal/$Gson$Types.java

@@ -57,7 +57,7 @@ public final class $Gson$Types {
    * @return a {@link java.io.Serializable serializable} parameterized type.
    */
   public static ParameterizedType newParameterizedTypeWithOwner(
-      Type ownerType, Type rawType, Type... typeArguments) {
+      Type ownerType, Class<?> rawType, Type... typeArguments) {
     return new ParameterizedTypeImpl(ownerType, rawType, typeArguments);
   }
 
@@ -112,7 +112,7 @@ public static Type canonicalize(Type type) {
     } else if (type instanceof ParameterizedType) {
       ParameterizedType p = (ParameterizedType) type;
       return new ParameterizedTypeImpl(
-          p.getOwnerType(), p.getRawType(), p.getActualTypeArguments());
+          p.getOwnerType(), (Class<?>) p.getRawType(), p.getActualTypeArguments());
 
     } else if (type instanceof GenericArrayType) {
       GenericArrayType g = (GenericArrayType) type;
@@ -411,7 +411,8 @@ private static Type resolve(
 
         toResolve =
             ownerChanged || argsChanged
-                ? newParameterizedTypeWithOwner(newOwnerType, original.getRawType(), args)
+                ? newParameterizedTypeWithOwner(
+                    newOwnerType, (Class<?>) original.getRawType(), args)
                 : original;
         break;
 
@@ -519,10 +520,9 @@ private static final class ParameterizedTypeImpl implements ParameterizedType, S
     @SuppressWarnings("serial")
     private final Type[] typeArguments;
 
-    public ParameterizedTypeImpl(Type ownerType, Type rawType, Type... typeArguments) {
-      // TODO: Should this enforce that rawType is a Class? See JDK implementation of
-      // the ParameterizedType interface and https://bugs.openjdk.org/browse/JDK-8250659
+    public ParameterizedTypeImpl(Type ownerType, Class<?> rawType, Type... typeArguments) {
       requireNonNull(rawType);
+
       if (ownerType == null && requiresOwnerType(rawType)) {
         throw new IllegalArgumentException("Must specify owner type for " + rawType);
       }

gson/src/main/java/com/google/gson/reflect/TypeToken.java

@@ -379,8 +379,7 @@ public static <T> TypeToken<T> get(Class<T> type) {
    * <p>If {@code rawType} is a non-generic class and no type arguments are provided, this method
    * simply delegates to {@link #get(Class)} and creates a {@code TypeToken(Class)}.
    *
-   * @throws IllegalArgumentException If {@code rawType} is not of type {@code Class}, or if the
-   *     type arguments are invalid for the raw type
+   * @throws IllegalArgumentException If the type arguments are invalid for the raw type
    */
   public static TypeToken<?> getParameterized(Type rawType, Type... typeArguments) {
     Objects.requireNonNull(rawType);
@@ -392,7 +391,9 @@ public static TypeToken<?> getParameterized(Type rawType, Type... typeArguments)
       // See also https://bugs.openjdk.org/browse/JDK-8250659
       throw new IllegalArgumentException("rawType must be of type Class, but was " + rawType);
     }
+
     Class<?> rawClass = (Class<?>) rawType;
+
     TypeVariable<?>[] typeVariables = rawClass.getTypeParameters();
 
     int expectedArgsCount = typeVariables.length;
@@ -408,14 +409,14 @@ public static TypeToken<?> getParameterized(Type rawType, Type... typeArguments)
 
     // For legacy reasons create a TypeToken(Class) if the type is not generic
     if (typeArguments.length == 0) {
-      return get(rawClass);
+      return get((Class<?>) rawType);
     }
 
     // Check for this here to avoid misleading exception thrown by ParameterizedTypeImpl
     if ($Gson$Types.requiresOwnerType(rawType)) {
       throw new IllegalArgumentException(
           "Raw type "
-              + rawClass.getName()
+              + ((Class<?>) rawType).getName()
               + " is not supported because it requires specifying an owner type");
     }
 
@@ -440,7 +441,8 @@ public static TypeToken<?> getParameterized(Type rawType, Type... typeArguments)
       }
     }
 
-    return new TypeToken<>($Gson$Types.newParameterizedTypeWithOwner(null, rawType, typeArguments));
+    return new TypeToken<>(
+        $Gson$Types.newParameterizedTypeWithOwner(null, rawClass, typeArguments));
   }
 
   /**

gson/src/test/java/com/google/gson/reflect/TypeTokenTest.java

@@ -19,12 +19,7 @@
 import static com.google.common.truth.Truth.assertThat;
 import static org.junit.Assert.assertThrows;
 
-import java.lang.reflect.GenericArrayType;
-import java.lang.reflect.Method;
-import java.lang.reflect.ParameterizedType;
-import java.lang.reflect.Type;
-import java.lang.reflect.TypeVariable;
-import java.lang.reflect.WildcardType;
+import java.lang.reflect.*;
 import java.util.ArrayList;
 import java.util.List;
 import java.util.Map;
@@ -187,6 +182,7 @@ public void testParameterizedFactory_Invalid() {
         () -> TypeToken.getParameterized(List.class, new Type[] {null}));
 
     GenericArrayType arrayType = (GenericArrayType) TypeToken.getArray(String.class).getType();
+
     IllegalArgumentException e =
         assertThrows(
             IllegalArgumentException.class,