Report all interop exception's type as ForeignException

Author: msimacek

graalpython/com.oracle.graal.python/src/com/oracle/graal/python/nodes/object/GetClassNode.java

@@ -59,7 +59,6 @@
 import com.oracle.graal.python.nodes.PNodeWithContext;
 import com.oracle.graal.python.nodes.truffle.PythonTypes;
 import com.oracle.graal.python.runtime.exception.PException;
-import com.oracle.truffle.api.CompilerDirectives;
 import com.oracle.truffle.api.dsl.Bind;
 import com.oracle.truffle.api.dsl.Cached;
 import com.oracle.truffle.api.dsl.Fallback;
@@ -68,9 +67,6 @@
 import com.oracle.truffle.api.dsl.Specialization;
 import com.oracle.truffle.api.dsl.TypeSystemReference;
 import com.oracle.truffle.api.exception.AbstractTruffleException;
-import com.oracle.truffle.api.interop.ExceptionType;
-import com.oracle.truffle.api.interop.InteropLibrary;
-import com.oracle.truffle.api.interop.UnsupportedMessageException;
 import com.oracle.truffle.api.library.CachedLibrary;
 import com.oracle.truffle.api.object.DynamicObjectLibrary;
 import com.oracle.truffle.api.object.Shape;
@@ -197,9 +193,8 @@ static Object getNativeVoidPtr(@SuppressWarnings("unused") PythonNativeVoidPtr o
         return PythonBuiltinClassType.PInt;
     }
 
-    @Specialization(guards = "isForeignRuntimeException(object, lib)")
-    static Object getTruffleException(@SuppressWarnings("unused") AbstractTruffleException object,
-                    @SuppressWarnings("unused") @CachedLibrary(limit = "3") InteropLibrary lib) {
+    @Specialization
+    static Object getTruffleException(@SuppressWarnings("unused") AbstractTruffleException object) {
         /*
          * Special case: if Python code asks for the class of a foreign exception, we return a
          * Python type that inherits from BaseException. We do this because Python users usually
@@ -217,12 +212,4 @@ static Object getForeign(@SuppressWarnings("unused") Object object) {
     protected static boolean hasInitialClass(Shape shape) {
         return (shape.getFlags() & PythonObject.CLASS_CHANGED_FLAG) == 0;
     }
-
-    protected static boolean isForeignRuntimeException(AbstractTruffleException e, InteropLibrary lib) {
-        try {
-            return lib.isException(e) && lib.getExceptionType(e) == ExceptionType.RUNTIME_ERROR;
-        } catch (UnsupportedMessageException ex) {
-            throw CompilerDirectives.shouldNotReachHere(ex);
-        }
-    }
 }