Add -position and -isAtEnd for use when manually parsing input streams.
diff --git a/objectivec/GPBCodedInputStream.h b/objectivec/GPBCodedInputStream.h
index 0619888..d64b64e 100644
--- a/objectivec/GPBCodedInputStream.h
+++ b/objectivec/GPBCodedInputStream.h
@@ -109,6 +109,15 @@
/// or until an endgroup tag, whichever comes first.
- (void)skipMessage;
+/// Check to see if the logical end of the stream has been reached.
+///
+/// This can return NO when there is no more data, but the current parsing
+/// expected more data.
+- (BOOL)isAtEnd;
+
+/// The offset into the stream.
+- (size_t)position;
+
/// Verifies that the last call to @c -readTag returned the given tag value.
/// This is used to verify that a nested group ended with the correct end tag.
/// Throws @c NSParseErrorException if value does not match the last tag.
