Revert "Merge 'isPythonInternal' and 'isInternal'."

This reverts commit 3b525ad0bbefbc1fe6929c22328bb19f82ccbb30.

Author: fangerer

graalpython/com.oracle.graal.python.test/src/com/oracle/graal/python/test/grammar/TestParserTranslator.java

@@ -156,7 +156,7 @@ public Signature getSignature() {
         }
 
         @Override
-        public boolean isInternal() {
+        public boolean isPythonInternal() {
             return false;
         }
 

graalpython/com.oracle.graal.python/src/com/oracle/graal/python/builtins/modules/PythonCextBuiltins.java

@@ -807,7 +807,7 @@ public Signature getSignature() {
         }
 
         @Override
-        public boolean isInternal() {
+        public boolean isPythonInternal() {
             // everything that is implemented in C is internal
             return true;
         }
@@ -1502,7 +1502,7 @@ public String toString() {
         }
 
         @Override
-        public boolean isInternal() {
+        public boolean isPythonInternal() {
             return true;
         }
 

graalpython/com.oracle.graal.python/src/com/oracle/graal/python/builtins/objects/code/CodeNodes.java

@@ -156,7 +156,7 @@ public Signature getSignature() {
                     }
 
                     @Override
-                    public boolean isInternal() {
+                    public boolean isPythonInternal() {
                         return false;
                     }
                 });

graalpython/com.oracle.graal.python/src/com/oracle/graal/python/nodes/ModuleRootNode.java

@@ -105,7 +105,7 @@ public Signature getSignature() {
     }
 
     @Override
-    public boolean isInternal() {
+    public boolean isPythonInternal() {
         return false;
     }
 }

graalpython/com.oracle.graal.python/src/com/oracle/graal/python/nodes/PRootNode.java

@@ -122,8 +122,10 @@ public final Assumption getDontNeedExceptionState() {
         return dontNeedExceptionState;
     }
 
+    public abstract boolean isPythonInternal();
+
     public static boolean isPythonInternal(RootNode rootNode) {
-        return rootNode instanceof PRootNode && ((PRootNode) rootNode).isInternal();
+        return rootNode instanceof PRootNode && ((PRootNode) rootNode).isPythonInternal();
     }
 
     private static Assumption createCallerFrameAssumption() {

graalpython/com.oracle.graal.python/src/com/oracle/graal/python/nodes/frame/ReadCallerFrameNode.java

@@ -153,7 +153,7 @@ public Frame visitFrame(FrameInstance frameInstance) {
                     } else {
                         // Skip frames of builtin functions (if requested) because these do not have
                         // a Python frame in CPython.
-                        if (!(skipInternal && pRootNode.isInternal())) {
+                        if (!(skipInternal && pRootNode.isPythonInternal())) {
                             if (i == level) {
                                 Frame frame = frameInstance.getFrame(frameAccess);
                                 assert PArguments.isPythonFrame(frame);

graalpython/com.oracle.graal.python/src/com/oracle/graal/python/nodes/function/BuiltinFunctionRootNode.java

@@ -383,4 +383,9 @@ public boolean declaresExplicitSelf() {
     public Signature getSignature() {
         return signature;
     }
+
+    @Override
+    public boolean isPythonInternal() {
+        return true;
+    }
 }

graalpython/com.oracle.graal.python/src/com/oracle/graal/python/nodes/function/FunctionRootNode.java

@@ -178,7 +178,7 @@ public void initializeFrame(VirtualFrame frame) {
     }
 
     @Override
-    public boolean isInternal() {
+    public boolean isPythonInternal() {
         return isRewritten;
     }
 }

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

@@ -99,8 +99,8 @@ public void initializeFrame(VirtualFrame frame) {
     }
 
     @Override
-    public boolean isInternal() {
+    public boolean isPythonInternal() {
         RootNode rootNode = callTarget.getRootNode();
-        return rootNode instanceof PRootNode && ((PRootNode) rootNode).isInternal();
+        return rootNode instanceof PRootNode && ((PRootNode) rootNode).isPythonInternal();
     }
 }