796   if (field->is_extension()) {  in AddFieldByStylizedNames()
1074       !result.field_descriptor->is_extension()) {  in FindFieldByName()
1085       result.field_descriptor->is_extension()) {  in FindExtensionByName()
1181   if (result == NULL || result->is_extension()) {  in FindFieldByNumber()
1192   if (result == NULL || result->is_extension()) {  in FindFieldByLowercaseName()
1203   if (result == NULL || result->is_extension()) {  in FindFieldByCamelcaseName()
1214   if (!result.IsNull() && !result.field_descriptor->is_extension()) {  in FindFieldByName()
1236   if (!result.IsNull() && result.field_descriptor->is_extension()) {  in FindExtensionByName()
1247   if (result == NULL || !result->is_extension()) {  in FindExtensionByLowercaseName()
1258   if (result == NULL || !result->is_extension()) {  in FindExtensionByCamelcaseName()
1369   if (!result.IsNull() && result.field_descriptor->is_extension()) {  in FindExtensionByName()
1379   if (result == NULL || !result->is_extension()) {  in FindExtensionByLowercaseName()
1389   if (result == NULL || !result->is_extension()) {  in FindExtensionByCamelcaseName()
1642   if (is_extension()) {  in CopyTo()
1671   if (containing_oneof() != NULL && !is_extension()) {  in CopyTo()
1771       if (fields[i]->is_extension()) {  in RetrieveOptions()
1957   if (is_extension()) {  in DebugString()
1963   if (is_extension()) {  in DebugString()
2204   if (is_extension()) {  in GetLocationPath()
2471                              bool is_extension);
3595                                               bool is_extension) {  in BuildFieldOrExtension()  argument
3608   result->is_extension_ = is_extension;  in BuildFieldOrExtension()
3787   } else if (!is_extension && result->number() > FieldDescriptor::kMaxNumber) {  in BuildFieldOrExtension()
3809   if (is_extension) {  in BuildFieldOrExtension()
4330     if (field->is_extension()) {  in CrossLinkField()
4348     if (field->is_extension()) {  in CrossLinkField()
4529     if (field->is_extension()) {  in ValidateFieldOptions()
4641   if (key_symbol.IsNull() || key_symbol.field_descriptor->is_extension()) {  in ValidateMapKey()
4788     if (uninterpreted_option_->name(i).is_extension()) {  in InterpretSingleOption()
5214         result.field_descriptor->is_extension()) {  in FindExtension()