Fix error message when reading from closed file

Author: msimacek

graalpython/com.oracle.graal.python/src/com/oracle/graal/python/builtins/modules/io/BufferedIONodes.java

@@ -56,6 +56,7 @@
 import static com.oracle.graal.python.nodes.ErrorMessages.IO_STREAM_INVALID_POS;
 import static com.oracle.graal.python.nodes.ErrorMessages.REENTRANT_CALL_INSIDE_P;
 import static com.oracle.graal.python.nodes.ErrorMessages.SHUTDOWN_POSSIBLY_DUE_TO_DAEMON_THREADS;
+import static com.oracle.graal.python.nodes.ErrorMessages.S_OF_CLOSED_FILE;
 import static com.oracle.graal.python.nodes.ErrorMessages.S_TO_CLOSED_FILE;
 import static com.oracle.graal.python.runtime.exception.PythonErrorType.IOUnsupportedOperation;
 import static com.oracle.graal.python.runtime.exception.PythonErrorType.OSError;
@@ -94,9 +95,11 @@ public class BufferedIONodes {
     abstract static class CheckIsClosedNode extends PNodeWithContext {
 
         private final String method;
+        private final String messageFmt;
 
         public CheckIsClosedNode(String method) {
             this.method = method;
+            this.messageFmt = IONodes.WRITE.equals(method) ? S_TO_CLOSED_FILE : S_OF_CLOSED_FILE;
         }
 
         public abstract boolean execute(VirtualFrame frame, PBuffered self);
@@ -107,7 +110,7 @@ boolean isClosedBuffered(VirtualFrame frame, PBuffered self,
                         @Cached IsClosedNode isClosedNode,
                         @Cached ConditionProfile isError) {
             if (isError.profile(isClosedNode.execute(frame, self))) {
-                throw raiseNode.raise(PythonBuiltinClassType.ValueError, S_TO_CLOSED_FILE, method);
+                throw raiseNode.raise(PythonBuiltinClassType.ValueError, messageFmt, method);
             }
             return false;
         }

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

@@ -852,6 +852,7 @@ public abstract class ErrorMessages {
     public static final String FILE_NOT_OPEN_FOR_S = "File not open for %s";
     public static final String UNBOUNDED_READ_RETURNED_MORE_BYTES = "unbounded read returned more bytes than a Python bytes object can hold";
     public static final String INVALID_MODE_S = "invalid mode: %s";
+    public static final String S_OF_CLOSED_FILE = "%s of closed file";
     public static final String S_TO_CLOSED_FILE = "%s to closed file";
     public static final String NOT_POSSIBLE_TO_SET_THE_ENCODING_OR = "It is not possible to set the encoding or newline of stream after the first read";
     public static final String NOT_WRITABLE = "not writable";