Change type of generator current exception to RuntimeException

Author: msimacek

graalpython/com.oracle.graal.python/src/com/oracle/graal/python/builtins/objects/generator/GeneratorControlData.java

@@ -35,15 +35,15 @@ public final class GeneratorControlData {
     private final boolean[] activeFlags;
     private final int[] blockNodeIndices;       // See {@link GeneratorBlockNode}
     private final Object[] forNodeIterators; // See {@link GeneratorForNode}
-    private final Object[] activeExceptions; // See {@link GeneratorTryExceptNode}
-                                             // {@link GeneratorTryFinallyNode}
+    private final RuntimeException[] activeExceptions; // See {@link GeneratorTryExceptNode}
+    // {@link GeneratorTryFinallyNode}
     private int lastYieldIndex;
 
     public GeneratorControlData(GeneratorInfo generatorInfo) {
         this.activeFlags = new boolean[generatorInfo.getNumOfActiveFlags()];
         this.blockNodeIndices = new int[generatorInfo.getNumOfBlockNodes()];
         this.forNodeIterators = new Object[generatorInfo.getNumOfIteratorSlots()];
-        this.activeExceptions = new Object[generatorInfo.getNumOfExceptionSlots()];
+        this.activeExceptions = new RuntimeException[generatorInfo.getNumOfExceptionSlots()];
     }
 
     public int getLastYieldIndex() {
@@ -79,11 +79,11 @@ public void setIteratorAt(int slot, Object value) {
         forNodeIterators[slot] = value;
     }
 
-    public Object getActiveException(int slot) {
+    public RuntimeException getActiveException(int slot) {
         return activeExceptions[slot];
     }
 
-    public void setActiveException(int slot, Object activeException) {
+    public void setActiveException(int slot, RuntimeException activeException) {
         this.activeExceptions[slot] = activeException;
     }
 }

graalpython/com.oracle.graal.python/src/com/oracle/graal/python/nodes/generator/GeneratorAccessNode.java

@@ -136,11 +136,11 @@ public void setIterator(VirtualFrame frame, int iteratorSlot, Object value) {
         getControlData(frame).setIteratorAt(iteratorSlot, value);
     }
 
-    public Object getActiveException(VirtualFrame frame, int slot) {
+    public RuntimeException getActiveException(VirtualFrame frame, int slot) {
         return getControlData(frame).getActiveException(slot);
     }
 
-    public void setActiveException(VirtualFrame frame, int slot, Object ex) {
+    public void setActiveException(VirtualFrame frame, int slot, RuntimeException ex) {
         getControlData(frame).setActiveException(slot, ex);
     }