A few small API tweaks.

- Foo_parsenew() -> Foo_parse().
- parse function takes plain (const char*, size_t) instead of
  upb_strview.  The latter is mainly useful for strings inside
  message objects.

6 files changed, 95 insertions, 66 deletions

diff --git a/google/protobuf/descriptor.upb.h b/google/protobuf/descriptor.upb.h
index 5fcc62a..587fddc 100644
--- a/google/protobuf/descriptor.upb.h
+++ b/google/protobuf/descriptor.upb.h
@@ -158,9 +158,10 @@ typedef enum {
 UPB_INLINE google_protobuf_FileDescriptorSet *google_protobuf_FileDescriptorSet_new(upb_arena *arena) {
   return (google_protobuf_FileDescriptorSet *)upb_msg_new(&google_protobuf_FileDescriptorSet_msginit, arena);
 }
-UPB_INLINE google_protobuf_FileDescriptorSet *google_protobuf_FileDescriptorSet_parsenew(upb_strview buf, upb_arena *arena) {
+UPB_INLINE google_protobuf_FileDescriptorSet *google_protobuf_FileDescriptorSet_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
   google_protobuf_FileDescriptorSet *ret = google_protobuf_FileDescriptorSet_new(arena);
-  return (ret && upb_decode(buf, ret, &google_protobuf_FileDescriptorSet_msginit)) ? ret : NULL;
+  return (ret && upb_decode(buf, size, ret, &google_protobuf_FileDescriptorSet_msginit)) ? ret : NULL;
 }
 UPB_INLINE char *google_protobuf_FileDescriptorSet_serialize(const google_protobuf_FileDescriptorSet *msg, upb_arena *arena, size_t *len) {
   return upb_encode(msg, &google_protobuf_FileDescriptorSet_msginit, arena, len);
@@ -188,9 +189,10 @@ UPB_INLINE struct google_protobuf_FileDescriptorProto* google_protobuf_FileDescr
 UPB_INLINE google_protobuf_FileDescriptorProto *google_protobuf_FileDescriptorProto_new(upb_arena *arena) {
   return (google_protobuf_FileDescriptorProto *)upb_msg_new(&google_protobuf_FileDescriptorProto_msginit, arena);
 }
-UPB_INLINE google_protobuf_FileDescriptorProto *google_protobuf_FileDescriptorProto_parsenew(upb_strview buf, upb_arena *arena) {
+UPB_INLINE google_protobuf_FileDescriptorProto *google_protobuf_FileDescriptorProto_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
   google_protobuf_FileDescriptorProto *ret = google_protobuf_FileDescriptorProto_new(arena);
-  return (ret && upb_decode(buf, ret, &google_protobuf_FileDescriptorProto_msginit)) ? ret : NULL;
+  return (ret && upb_decode(buf, size, ret, &google_protobuf_FileDescriptorProto_msginit)) ? ret : NULL;
 }
 UPB_INLINE char *google_protobuf_FileDescriptorProto_serialize(const google_protobuf_FileDescriptorProto *msg, upb_arena *arena, size_t *len) {
   return upb_encode(msg, &google_protobuf_FileDescriptorProto_msginit, arena, len);
@@ -341,9 +343,10 @@ UPB_INLINE void google_protobuf_FileDescriptorProto_set_syntax(google_protobuf_F
 UPB_INLINE google_protobuf_DescriptorProto *google_protobuf_DescriptorProto_new(upb_arena *arena) {
   return (google_protobuf_DescriptorProto *)upb_msg_new(&google_protobuf_DescriptorProto_msginit, arena);
 }
-UPB_INLINE google_protobuf_DescriptorProto *google_protobuf_DescriptorProto_parsenew(upb_strview buf, upb_arena *arena) {
+UPB_INLINE google_protobuf_DescriptorProto *google_protobuf_DescriptorProto_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
   google_protobuf_DescriptorProto *ret = google_protobuf_DescriptorProto_new(arena);
-  return (ret && upb_decode(buf, ret, &google_protobuf_DescriptorProto_msginit)) ? ret : NULL;
+  return (ret && upb_decode(buf, size, ret, &google_protobuf_DescriptorProto_msginit)) ? ret : NULL;
 }
 UPB_INLINE char *google_protobuf_DescriptorProto_serialize(const google_protobuf_DescriptorProto *msg, upb_arena *arena, size_t *len) {
   return upb_encode(msg, &google_protobuf_DescriptorProto_msginit, arena, len);
@@ -487,9 +490,10 @@ UPB_INLINE bool google_protobuf_DescriptorProto_add_reserved_name(google_protobu
 UPB_INLINE google_protobuf_DescriptorProto_ExtensionRange *google_protobuf_DescriptorProto_ExtensionRange_new(upb_arena *arena) {
   return (google_protobuf_DescriptorProto_ExtensionRange *)upb_msg_new(&google_protobuf_DescriptorProto_ExtensionRange_msginit, arena);
 }
-UPB_INLINE google_protobuf_DescriptorProto_ExtensionRange *google_protobuf_DescriptorProto_ExtensionRange_parsenew(upb_strview buf, upb_arena *arena) {
+UPB_INLINE google_protobuf_DescriptorProto_ExtensionRange *google_protobuf_DescriptorProto_ExtensionRange_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
   google_protobuf_DescriptorProto_ExtensionRange *ret = google_protobuf_DescriptorProto_ExtensionRange_new(arena);
-  return (ret && upb_decode(buf, ret, &google_protobuf_DescriptorProto_ExtensionRange_msginit)) ? ret : NULL;
+  return (ret && upb_decode(buf, size, ret, &google_protobuf_DescriptorProto_ExtensionRange_msginit)) ? ret : NULL;
 }
 UPB_INLINE char *google_protobuf_DescriptorProto_ExtensionRange_serialize(const google_protobuf_DescriptorProto_ExtensionRange *msg, upb_arena *arena, size_t *len) {
   return upb_encode(msg, &google_protobuf_DescriptorProto_ExtensionRange_msginit, arena, len);
@@ -530,9 +534,10 @@ UPB_INLINE struct google_protobuf_ExtensionRangeOptions* google_protobuf_Descrip
 UPB_INLINE google_protobuf_DescriptorProto_ReservedRange *google_protobuf_DescriptorProto_ReservedRange_new(upb_arena *arena) {
   return (google_protobuf_DescriptorProto_ReservedRange *)upb_msg_new(&google_protobuf_DescriptorProto_ReservedRange_msginit, arena);
 }
-UPB_INLINE google_protobuf_DescriptorProto_ReservedRange *google_protobuf_DescriptorProto_ReservedRange_parsenew(upb_strview buf, upb_arena *arena) {
+UPB_INLINE google_protobuf_DescriptorProto_ReservedRange *google_protobuf_DescriptorProto_ReservedRange_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
   google_protobuf_DescriptorProto_ReservedRange *ret = google_protobuf_DescriptorProto_ReservedRange_new(arena);
-  return (ret && upb_decode(buf, ret, &google_protobuf_DescriptorProto_ReservedRange_msginit)) ? ret : NULL;
+  return (ret && upb_decode(buf, size, ret, &google_protobuf_DescriptorProto_ReservedRange_msginit)) ? ret : NULL;
 }
 UPB_INLINE char *google_protobuf_DescriptorProto_ReservedRange_serialize(const google_protobuf_DescriptorProto_ReservedRange *msg, upb_arena *arena, size_t *len) {
   return upb_encode(msg, &google_protobuf_DescriptorProto_ReservedRange_msginit, arena, len);
@@ -558,9 +563,10 @@ UPB_INLINE void google_protobuf_DescriptorProto_ReservedRange_set_end(google_pro
 UPB_INLINE google_protobuf_ExtensionRangeOptions *google_protobuf_ExtensionRangeOptions_new(upb_arena *arena) {
   return (google_protobuf_ExtensionRangeOptions *)upb_msg_new(&google_protobuf_ExtensionRangeOptions_msginit, arena);
 }
-UPB_INLINE google_protobuf_ExtensionRangeOptions *google_protobuf_ExtensionRangeOptions_parsenew(upb_strview buf, upb_arena *arena) {
+UPB_INLINE google_protobuf_ExtensionRangeOptions *google_protobuf_ExtensionRangeOptions_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
   google_protobuf_ExtensionRangeOptions *ret = google_protobuf_ExtensionRangeOptions_new(arena);
-  return (ret && upb_decode(buf, ret, &google_protobuf_ExtensionRangeOptions_msginit)) ? ret : NULL;
+  return (ret && upb_decode(buf, size, ret, &google_protobuf_ExtensionRangeOptions_msginit)) ? ret : NULL;
 }
 UPB_INLINE char *google_protobuf_ExtensionRangeOptions_serialize(const google_protobuf_ExtensionRangeOptions *msg, upb_arena *arena, size_t *len) {
   return upb_encode(msg, &google_protobuf_ExtensionRangeOptions_msginit, arena, len);
@@ -588,9 +594,10 @@ UPB_INLINE struct google_protobuf_UninterpretedOption* google_protobuf_Extension
 UPB_INLINE google_protobuf_FieldDescriptorProto *google_protobuf_FieldDescriptorProto_new(upb_arena *arena) {
   return (google_protobuf_FieldDescriptorProto *)upb_msg_new(&google_protobuf_FieldDescriptorProto_msginit, arena);
 }
-UPB_INLINE google_protobuf_FieldDescriptorProto *google_protobuf_FieldDescriptorProto_parsenew(upb_strview buf, upb_arena *arena) {
+UPB_INLINE google_protobuf_FieldDescriptorProto *google_protobuf_FieldDescriptorProto_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
   google_protobuf_FieldDescriptorProto *ret = google_protobuf_FieldDescriptorProto_new(arena);
-  return (ret && upb_decode(buf, ret, &google_protobuf_FieldDescriptorProto_msginit)) ? ret : NULL;
+  return (ret && upb_decode(buf, size, ret, &google_protobuf_FieldDescriptorProto_msginit)) ? ret : NULL;
 }
 UPB_INLINE char *google_protobuf_FieldDescriptorProto_serialize(const google_protobuf_FieldDescriptorProto *msg, upb_arena *arena, size_t *len) {
   return upb_encode(msg, &google_protobuf_FieldDescriptorProto_msginit, arena, len);
@@ -673,9 +680,10 @@ UPB_INLINE void google_protobuf_FieldDescriptorProto_set_json_name(google_protob
 UPB_INLINE google_protobuf_OneofDescriptorProto *google_protobuf_OneofDescriptorProto_new(upb_arena *arena) {
   return (google_protobuf_OneofDescriptorProto *)upb_msg_new(&google_protobuf_OneofDescriptorProto_msginit, arena);
 }
-UPB_INLINE google_protobuf_OneofDescriptorProto *google_protobuf_OneofDescriptorProto_parsenew(upb_strview buf, upb_arena *arena) {
+UPB_INLINE google_protobuf_OneofDescriptorProto *google_protobuf_OneofDescriptorProto_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
   google_protobuf_OneofDescriptorProto *ret = google_protobuf_OneofDescriptorProto_new(arena);
-  return (ret && upb_decode(buf, ret, &google_protobuf_OneofDescriptorProto_msginit)) ? ret : NULL;
+  return (ret && upb_decode(buf, size, ret, &google_protobuf_OneofDescriptorProto_msginit)) ? ret : NULL;
 }
 UPB_INLINE char *google_protobuf_OneofDescriptorProto_serialize(const google_protobuf_OneofDescriptorProto *msg, upb_arena *arena, size_t *len) {
   return upb_encode(msg, &google_protobuf_OneofDescriptorProto_msginit, arena, len);
@@ -710,9 +718,10 @@ UPB_INLINE struct google_protobuf_OneofOptions* google_protobuf_OneofDescriptorP
 UPB_INLINE google_protobuf_EnumDescriptorProto *google_protobuf_EnumDescriptorProto_new(upb_arena *arena) {
   return (google_protobuf_EnumDescriptorProto *)upb_msg_new(&google_protobuf_EnumDescriptorProto_msginit, arena);
 }
-UPB_INLINE google_protobuf_EnumDescriptorProto *google_protobuf_EnumDescriptorProto_parsenew(upb_strview buf, upb_arena *arena) {
+UPB_INLINE google_protobuf_EnumDescriptorProto *google_protobuf_EnumDescriptorProto_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
   google_protobuf_EnumDescriptorProto *ret = google_protobuf_EnumDescriptorProto_new(arena);
-  return (ret && upb_decode(buf, ret, &google_protobuf_EnumDescriptorProto_msginit)) ? ret : NULL;
+  return (ret && upb_decode(buf, size, ret, &google_protobuf_EnumDescriptorProto_msginit)) ? ret : NULL;
 }
 UPB_INLINE char *google_protobuf_EnumDescriptorProto_serialize(const google_protobuf_EnumDescriptorProto *msg, upb_arena *arena, size_t *len) {
   return upb_encode(msg, &google_protobuf_EnumDescriptorProto_msginit, arena, len);
@@ -786,9 +795,10 @@ UPB_INLINE bool google_protobuf_EnumDescriptorProto_add_reserved_name(google_pro
 UPB_INLINE google_protobuf_EnumDescriptorProto_EnumReservedRange *google_protobuf_EnumDescriptorProto_EnumReservedRange_new(upb_arena *arena) {
   return (google_protobuf_EnumDescriptorProto_EnumReservedRange *)upb_msg_new(&google_protobuf_EnumDescriptorProto_EnumReservedRange_msginit, arena);
 }
-UPB_INLINE google_protobuf_EnumDescriptorProto_EnumReservedRange *google_protobuf_EnumDescriptorProto_EnumReservedRange_parsenew(upb_strview buf, upb_arena *arena) {
+UPB_INLINE google_protobuf_EnumDescriptorProto_EnumReservedRange *google_protobuf_EnumDescriptorProto_EnumReservedRange_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
   google_protobuf_EnumDescriptorProto_EnumReservedRange *ret = google_protobuf_EnumDescriptorProto_EnumReservedRange_new(arena);
-  return (ret && upb_decode(buf, ret, &google_protobuf_EnumDescriptorProto_EnumReservedRange_msginit)) ? ret : NULL;
+  return (ret && upb_decode(buf, size, ret, &google_protobuf_EnumDescriptorProto_EnumReservedRange_msginit)) ? ret : NULL;
 }
 UPB_INLINE char *google_protobuf_EnumDescriptorProto_EnumReservedRange_serialize(const google_protobuf_EnumDescriptorProto_EnumReservedRange *msg, upb_arena *arena, size_t *len) {
   return upb_encode(msg, &google_protobuf_EnumDescriptorProto_EnumReservedRange_msginit, arena, len);
@@ -814,9 +824,10 @@ UPB_INLINE void google_protobuf_EnumDescriptorProto_EnumReservedRange_set_end(go
 UPB_INLINE google_protobuf_EnumValueDescriptorProto *google_protobuf_EnumValueDescriptorProto_new(upb_arena *arena) {
   return (google_protobuf_EnumValueDescriptorProto *)upb_msg_new(&google_protobuf_EnumValueDescriptorProto_msginit, arena);
 }
-UPB_INLINE google_protobuf_EnumValueDescriptorProto *google_protobuf_EnumValueDescriptorProto_parsenew(upb_strview buf, upb_arena *arena) {
+UPB_INLINE google_protobuf_EnumValueDescriptorProto *google_protobuf_EnumValueDescriptorProto_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
   google_protobuf_EnumValueDescriptorProto *ret = google_protobuf_EnumValueDescriptorProto_new(arena);
-  return (ret && upb_decode(buf, ret, &google_protobuf_EnumValueDescriptorProto_msginit)) ? ret : NULL;
+  return (ret && upb_decode(buf, size, ret, &google_protobuf_EnumValueDescriptorProto_msginit)) ? ret : NULL;
 }
 UPB_INLINE char *google_protobuf_EnumValueDescriptorProto_serialize(const google_protobuf_EnumValueDescriptorProto *msg, upb_arena *arena, size_t *len) {
   return upb_encode(msg, &google_protobuf_EnumValueDescriptorProto_msginit, arena, len);
@@ -857,9 +868,10 @@ UPB_INLINE struct google_protobuf_EnumValueOptions* google_protobuf_EnumValueDes
 UPB_INLINE google_protobuf_ServiceDescriptorProto *google_protobuf_ServiceDescriptorProto_new(upb_arena *arena) {
   return (google_protobuf_ServiceDescriptorProto *)upb_msg_new(&google_protobuf_ServiceDescriptorProto_msginit, arena);
 }
-UPB_INLINE google_protobuf_ServiceDescriptorProto *google_protobuf_ServiceDescriptorProto_parsenew(upb_strview buf, upb_arena *arena) {
+UPB_INLINE google_protobuf_ServiceDescriptorProto *google_protobuf_ServiceDescriptorProto_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
   google_protobuf_ServiceDescriptorProto *ret = google_protobuf_ServiceDescriptorProto_new(arena);
-  return (ret && upb_decode(buf, ret, &google_protobuf_ServiceDescriptorProto_msginit)) ? ret : NULL;
+  return (ret && upb_decode(buf, size, ret, &google_protobuf_ServiceDescriptorProto_msginit)) ? ret : NULL;
 }
 UPB_INLINE char *google_protobuf_ServiceDescriptorProto_serialize(const google_protobuf_ServiceDescriptorProto *msg, upb_arena *arena, size_t *len) {
   return upb_encode(msg, &google_protobuf_ServiceDescriptorProto_msginit, arena, len);
@@ -908,9 +920,10 @@ UPB_INLINE struct google_protobuf_ServiceOptions* google_protobuf_ServiceDescrip
 UPB_INLINE google_protobuf_MethodDescriptorProto *google_protobuf_MethodDescriptorProto_new(upb_arena *arena) {
   return (google_protobuf_MethodDescriptorProto *)upb_msg_new(&google_protobuf_MethodDescriptorProto_msginit, arena);
 }
-UPB_INLINE google_protobuf_MethodDescriptorProto *google_protobuf_MethodDescriptorProto_parsenew(upb_strview buf, upb_arena *arena) {
+UPB_INLINE google_protobuf_MethodDescriptorProto *google_protobuf_MethodDescriptorProto_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
   google_protobuf_MethodDescriptorProto *ret = google_protobuf_MethodDescriptorProto_new(arena);
-  return (ret && upb_decode(buf, ret, &google_protobuf_MethodDescriptorProto_msginit)) ? ret : NULL;
+  return (ret && upb_decode(buf, size, ret, &google_protobuf_MethodDescriptorProto_msginit)) ? ret : NULL;
 }
 UPB_INLINE char *google_protobuf_MethodDescriptorProto_serialize(const google_protobuf_MethodDescriptorProto *msg, upb_arena *arena, size_t *len) {
   return upb_encode(msg, &google_protobuf_MethodDescriptorProto_msginit, arena, len);
@@ -969,9 +982,10 @@ UPB_INLINE void google_protobuf_MethodDescriptorProto_set_server_streaming(googl
 UPB_INLINE google_protobuf_FileOptions *google_protobuf_FileOptions_new(upb_arena *arena) {
   return (google_protobuf_FileOptions *)upb_msg_new(&google_protobuf_FileOptions_msginit, arena);
 }
-UPB_INLINE google_protobuf_FileOptions *google_protobuf_FileOptions_parsenew(upb_strview buf, upb_arena *arena) {
+UPB_INLINE google_protobuf_FileOptions *google_protobuf_FileOptions_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
   google_protobuf_FileOptions *ret = google_protobuf_FileOptions_new(arena);
-  return (ret && upb_decode(buf, ret, &google_protobuf_FileOptions_msginit)) ? ret : NULL;
+  return (ret && upb_decode(buf, size, ret, &google_protobuf_FileOptions_msginit)) ? ret : NULL;
 }
 UPB_INLINE char *google_protobuf_FileOptions_serialize(const google_protobuf_FileOptions *msg, upb_arena *arena, size_t *len) {
   return upb_encode(msg, &google_protobuf_FileOptions_msginit, arena, len);
@@ -1107,9 +1121,10 @@ UPB_INLINE struct google_protobuf_UninterpretedOption* google_protobuf_FileOptio
 UPB_INLINE google_protobuf_MessageOptions *google_protobuf_MessageOptions_new(upb_arena *arena) {
   return (google_protobuf_MessageOptions *)upb_msg_new(&google_protobuf_MessageOptions_msginit, arena);
 }
-UPB_INLINE google_protobuf_MessageOptions *google_protobuf_MessageOptions_parsenew(upb_strview buf, upb_arena *arena) {
+UPB_INLINE google_protobuf_MessageOptions *google_protobuf_MessageOptions_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
   google_protobuf_MessageOptions *ret = google_protobuf_MessageOptions_new(arena);
-  return (ret && upb_decode(buf, ret, &google_protobuf_MessageOptions_msginit)) ? ret : NULL;
+  return (ret && upb_decode(buf, size, ret, &google_protobuf_MessageOptions_msginit)) ? ret : NULL;
 }
 UPB_INLINE char *google_protobuf_MessageOptions_serialize(const google_protobuf_MessageOptions *msg, upb_arena *arena, size_t *len) {
   return upb_encode(msg, &google_protobuf_MessageOptions_msginit, arena, len);
@@ -1161,9 +1176,10 @@ UPB_INLINE struct google_protobuf_UninterpretedOption* google_protobuf_MessageOp
 UPB_INLINE google_protobuf_FieldOptions *google_protobuf_FieldOptions_new(upb_arena *arena) {
   return (google_protobuf_FieldOptions *)upb_msg_new(&google_protobuf_FieldOptions_msginit, arena);
 }
-UPB_INLINE google_protobuf_FieldOptions *google_protobuf_FieldOptions_parsenew(upb_strview buf, upb_arena *arena) {
+UPB_INLINE google_protobuf_FieldOptions *google_protobuf_FieldOptions_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
   google_protobuf_FieldOptions *ret = google_protobuf_FieldOptions_new(arena);
-  return (ret && upb_decode(buf, ret, &google_protobuf_FieldOptions_msginit)) ? ret : NULL;
+  return (ret && upb_decode(buf, size, ret, &google_protobuf_FieldOptions_msginit)) ? ret : NULL;
 }
 UPB_INLINE char *google_protobuf_FieldOptions_serialize(const google_protobuf_FieldOptions *msg, upb_arena *arena, size_t *len) {
   return upb_encode(msg, &google_protobuf_FieldOptions_msginit, arena, len);
@@ -1227,9 +1243,10 @@ UPB_INLINE struct google_protobuf_UninterpretedOption* google_protobuf_FieldOpti
 UPB_INLINE google_protobuf_OneofOptions *google_protobuf_OneofOptions_new(upb_arena *arena) {
   return (google_protobuf_OneofOptions *)upb_msg_new(&google_protobuf_OneofOptions_msginit, arena);
 }
-UPB_INLINE google_protobuf_OneofOptions *google_protobuf_OneofOptions_parsenew(upb_strview buf, upb_arena *arena) {
+UPB_INLINE google_protobuf_OneofOptions *google_protobuf_OneofOptions_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
   google_protobuf_OneofOptions *ret = google_protobuf_OneofOptions_new(arena);
-  return (ret && upb_decode(buf, ret, &google_protobuf_OneofOptions_msginit)) ? ret : NULL;
+  return (ret && upb_decode(buf, size, ret, &google_protobuf_OneofOptions_msginit)) ? ret : NULL;
 }
 UPB_INLINE char *google_protobuf_OneofOptions_serialize(const google_protobuf_OneofOptions *msg, upb_arena *arena, size_t *len) {
   return upb_encode(msg, &google_protobuf_OneofOptions_msginit, arena, len);
@@ -1257,9 +1274,10 @@ UPB_INLINE struct google_protobuf_UninterpretedOption* google_protobuf_OneofOpti
 UPB_INLINE google_protobuf_EnumOptions *google_protobuf_EnumOptions_new(upb_arena *arena) {
   return (google_protobuf_EnumOptions *)upb_msg_new(&google_protobuf_EnumOptions_msginit, arena);
 }
-UPB_INLINE google_protobuf_EnumOptions *google_protobuf_EnumOptions_parsenew(upb_strview buf, upb_arena *arena) {
+UPB_INLINE google_protobuf_EnumOptions *google_protobuf_EnumOptions_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
   google_protobuf_EnumOptions *ret = google_protobuf_EnumOptions_new(arena);
-  return (ret && upb_decode(buf, ret, &google_protobuf_EnumOptions_msginit)) ? ret : NULL;
+  return (ret && upb_decode(buf, size, ret, &google_protobuf_EnumOptions_msginit)) ? ret : NULL;
 }
 UPB_INLINE char *google_protobuf_EnumOptions_serialize(const google_protobuf_EnumOptions *msg, upb_arena *arena, size_t *len) {
   return upb_encode(msg, &google_protobuf_EnumOptions_msginit, arena, len);
@@ -1299,9 +1317,10 @@ UPB_INLINE struct google_protobuf_UninterpretedOption* google_protobuf_EnumOptio
 UPB_INLINE google_protobuf_EnumValueOptions *google_protobuf_EnumValueOptions_new(upb_arena *arena) {
   return (google_protobuf_EnumValueOptions *)upb_msg_new(&google_protobuf_EnumValueOptions_msginit, arena);
 }
-UPB_INLINE google_protobuf_EnumValueOptions *google_protobuf_EnumValueOptions_parsenew(upb_strview buf, upb_arena *arena) {
+UPB_INLINE google_protobuf_EnumValueOptions *google_protobuf_EnumValueOptions_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
   google_protobuf_EnumValueOptions *ret = google_protobuf_EnumValueOptions_new(arena);
-  return (ret && upb_decode(buf, ret, &google_protobuf_EnumValueOptions_msginit)) ? ret : NULL;
+  return (ret && upb_decode(buf, size, ret, &google_protobuf_EnumValueOptions_msginit)) ? ret : NULL;
 }
 UPB_INLINE char *google_protobuf_EnumValueOptions_serialize(const google_protobuf_EnumValueOptions *msg, upb_arena *arena, size_t *len) {
   return upb_encode(msg, &google_protobuf_EnumValueOptions_msginit, arena, len);
@@ -1335,9 +1354,10 @@ UPB_INLINE struct google_protobuf_UninterpretedOption* google_protobuf_EnumValue
 UPB_INLINE google_protobuf_ServiceOptions *google_protobuf_ServiceOptions_new(upb_arena *arena) {
   return (google_protobuf_ServiceOptions *)upb_msg_new(&google_protobuf_ServiceOptions_msginit, arena);
 }
-UPB_INLINE google_protobuf_ServiceOptions *google_protobuf_ServiceOptions_parsenew(upb_strview buf, upb_arena *arena) {
+UPB_INLINE google_protobuf_ServiceOptions *google_protobuf_ServiceOptions_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
   google_protobuf_ServiceOptions *ret = google_protobuf_ServiceOptions_new(arena);
-  return (ret && upb_decode(buf, ret, &google_protobuf_ServiceOptions_msginit)) ? ret : NULL;
+  return (ret && upb_decode(buf, size, ret, &google_protobuf_ServiceOptions_msginit)) ? ret : NULL;
 }
 UPB_INLINE char *google_protobuf_ServiceOptions_serialize(const google_protobuf_ServiceOptions *msg, upb_arena *arena, size_t *len) {
   return upb_encode(msg, &google_protobuf_ServiceOptions_msginit, arena, len);
@@ -1371,9 +1391,10 @@ UPB_INLINE struct google_protobuf_UninterpretedOption* google_protobuf_ServiceOp
 UPB_INLINE google_protobuf_MethodOptions *google_protobuf_MethodOptions_new(upb_arena *arena) {
   return (google_protobuf_MethodOptions *)upb_msg_new(&google_protobuf_MethodOptions_msginit, arena);
 }
-UPB_INLINE google_protobuf_MethodOptions *google_protobuf_MethodOptions_parsenew(upb_strview buf, upb_arena *arena) {
+UPB_INLINE google_protobuf_MethodOptions *google_protobuf_MethodOptions_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
   google_protobuf_MethodOptions *ret = google_protobuf_MethodOptions_new(arena);
-  return (ret && upb_decode(buf, ret, &google_protobuf_MethodOptions_msginit)) ? ret : NULL;
+  return (ret && upb_decode(buf, size, ret, &google_protobuf_MethodOptions_msginit)) ? ret : NULL;
 }
 UPB_INLINE char *google_protobuf_MethodOptions_serialize(const google_protobuf_MethodOptions *msg, upb_arena *arena, size_t *len) {
   return upb_encode(msg, &google_protobuf_MethodOptions_msginit, arena, len);
@@ -1413,9 +1434,10 @@ UPB_INLINE struct google_protobuf_UninterpretedOption* google_protobuf_MethodOpt
 UPB_INLINE google_protobuf_UninterpretedOption *google_protobuf_UninterpretedOption_new(upb_arena *arena) {
   return (google_protobuf_UninterpretedOption *)upb_msg_new(&google_protobuf_UninterpretedOption_msginit, arena);
 }
-UPB_INLINE google_protobuf_UninterpretedOption *google_protobuf_UninterpretedOption_parsenew(upb_strview buf, upb_arena *arena) {
+UPB_INLINE google_protobuf_UninterpretedOption *google_protobuf_UninterpretedOption_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
   google_protobuf_UninterpretedOption *ret = google_protobuf_UninterpretedOption_new(arena);
-  return (ret && upb_decode(buf, ret, &google_protobuf_UninterpretedOption_msginit)) ? ret : NULL;
+  return (ret && upb_decode(buf, size, ret, &google_protobuf_UninterpretedOption_msginit)) ? ret : NULL;
 }
 UPB_INLINE char *google_protobuf_UninterpretedOption_serialize(const google_protobuf_UninterpretedOption *msg, upb_arena *arena, size_t *len) {
   return upb_encode(msg, &google_protobuf_UninterpretedOption_msginit, arena, len);
@@ -1479,9 +1501,10 @@ UPB_INLINE void google_protobuf_UninterpretedOption_set_aggregate_value(google_p
 UPB_INLINE google_protobuf_UninterpretedOption_NamePart *google_protobuf_UninterpretedOption_NamePart_new(upb_arena *arena) {
   return (google_protobuf_UninterpretedOption_NamePart *)upb_msg_new(&google_protobuf_UninterpretedOption_NamePart_msginit, arena);
 }
-UPB_INLINE google_protobuf_UninterpretedOption_NamePart *google_protobuf_UninterpretedOption_NamePart_parsenew(upb_strview buf, upb_arena *arena) {
+UPB_INLINE google_protobuf_UninterpretedOption_NamePart *google_protobuf_UninterpretedOption_NamePart_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
   google_protobuf_UninterpretedOption_NamePart *ret = google_protobuf_UninterpretedOption_NamePart_new(arena);
-  return (ret && upb_decode(buf, ret, &google_protobuf_UninterpretedOption_NamePart_msginit)) ? ret : NULL;
+  return (ret && upb_decode(buf, size, ret, &google_protobuf_UninterpretedOption_NamePart_msginit)) ? ret : NULL;
 }
 UPB_INLINE char *google_protobuf_UninterpretedOption_NamePart_serialize(const google_protobuf_UninterpretedOption_NamePart *msg, upb_arena *arena, size_t *len) {
   return upb_encode(msg, &google_protobuf_UninterpretedOption_NamePart_msginit, arena, len);
@@ -1507,9 +1530,10 @@ UPB_INLINE void google_protobuf_UninterpretedOption_NamePart_set_is_extension(go
 UPB_INLINE google_protobuf_SourceCodeInfo *google_protobuf_SourceCodeInfo_new(upb_arena *arena) {
   return (google_protobuf_SourceCodeInfo *)upb_msg_new(&google_protobuf_SourceCodeInfo_msginit, arena);
 }
-UPB_INLINE google_protobuf_SourceCodeInfo *google_protobuf_SourceCodeInfo_parsenew(upb_strview buf, upb_arena *arena) {
+UPB_INLINE google_protobuf_SourceCodeInfo *google_protobuf_SourceCodeInfo_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
   google_protobuf_SourceCodeInfo *ret = google_protobuf_SourceCodeInfo_new(arena);
-  return (ret && upb_decode(buf, ret, &google_protobuf_SourceCodeInfo_msginit)) ? ret : NULL;
+  return (ret && upb_decode(buf, size, ret, &google_protobuf_SourceCodeInfo_msginit)) ? ret : NULL;
 }
 UPB_INLINE char *google_protobuf_SourceCodeInfo_serialize(const google_protobuf_SourceCodeInfo *msg, upb_arena *arena, size_t *len) {
   return upb_encode(msg, &google_protobuf_SourceCodeInfo_msginit, arena, len);
@@ -1537,9 +1561,10 @@ UPB_INLINE struct google_protobuf_SourceCodeInfo_Location* google_protobuf_Sourc
 UPB_INLINE google_protobuf_SourceCodeInfo_Location *google_protobuf_SourceCodeInfo_Location_new(upb_arena *arena) {
   return (google_protobuf_SourceCodeInfo_Location *)upb_msg_new(&google_protobuf_SourceCodeInfo_Location_msginit, arena);
 }
-UPB_INLINE google_protobuf_SourceCodeInfo_Location *google_protobuf_SourceCodeInfo_Location_parsenew(upb_strview buf, upb_arena *arena) {
+UPB_INLINE google_protobuf_SourceCodeInfo_Location *google_protobuf_SourceCodeInfo_Location_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
   google_protobuf_SourceCodeInfo_Location *ret = google_protobuf_SourceCodeInfo_Location_new(arena);
-  return (ret && upb_decode(buf, ret, &google_protobuf_SourceCodeInfo_Location_msginit)) ? ret : NULL;
+  return (ret && upb_decode(buf, size, ret, &google_protobuf_SourceCodeInfo_Location_msginit)) ? ret : NULL;
 }
 UPB_INLINE char *google_protobuf_SourceCodeInfo_Location_serialize(const google_protobuf_SourceCodeInfo_Location *msg, upb_arena *arena, size_t *len) {
   return upb_encode(msg, &google_protobuf_SourceCodeInfo_Location_msginit, arena, len);
@@ -1598,9 +1623,10 @@ UPB_INLINE bool google_protobuf_SourceCodeInfo_Location_add_leading_detached_com
 UPB_INLINE google_protobuf_GeneratedCodeInfo *google_protobuf_GeneratedCodeInfo_new(upb_arena *arena) {
   return (google_protobuf_GeneratedCodeInfo *)upb_msg_new(&google_protobuf_GeneratedCodeInfo_msginit, arena);
 }
-UPB_INLINE google_protobuf_GeneratedCodeInfo *google_protobuf_GeneratedCodeInfo_parsenew(upb_strview buf, upb_arena *arena) {
+UPB_INLINE google_protobuf_GeneratedCodeInfo *google_protobuf_GeneratedCodeInfo_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
   google_protobuf_GeneratedCodeInfo *ret = google_protobuf_GeneratedCodeInfo_new(arena);
-  return (ret && upb_decode(buf, ret, &google_protobuf_GeneratedCodeInfo_msginit)) ? ret : NULL;
+  return (ret && upb_decode(buf, size, ret, &google_protobuf_GeneratedCodeInfo_msginit)) ? ret : NULL;
 }
 UPB_INLINE char *google_protobuf_GeneratedCodeInfo_serialize(const google_protobuf_GeneratedCodeInfo *msg, upb_arena *arena, size_t *len) {
   return upb_encode(msg, &google_protobuf_GeneratedCodeInfo_msginit, arena, len);
@@ -1628,9 +1654,10 @@ UPB_INLINE struct google_protobuf_GeneratedCodeInfo_Annotation* google_protobuf_
 UPB_INLINE google_protobuf_GeneratedCodeInfo_Annotation *google_protobuf_GeneratedCodeInfo_Annotation_new(upb_arena *arena) {
   return (google_protobuf_GeneratedCodeInfo_Annotation *)upb_msg_new(&google_protobuf_GeneratedCodeInfo_Annotation_msginit, arena);
 }
-UPB_INLINE google_protobuf_GeneratedCodeInfo_Annotation *google_protobuf_GeneratedCodeInfo_Annotation_parsenew(upb_strview buf, upb_arena *arena) {
+UPB_INLINE google_protobuf_GeneratedCodeInfo_Annotation *google_protobuf_GeneratedCodeInfo_Annotation_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
   google_protobuf_GeneratedCodeInfo_Annotation *ret = google_protobuf_GeneratedCodeInfo_Annotation_new(arena);
-  return (ret && upb_decode(buf, ret, &google_protobuf_GeneratedCodeInfo_Annotation_msginit)) ? ret : NULL;
+  return (ret && upb_decode(buf, size, ret, &google_protobuf_GeneratedCodeInfo_Annotation_msginit)) ? ret : NULL;
 }
 UPB_INLINE char *google_protobuf_GeneratedCodeInfo_Annotation_serialize(const google_protobuf_GeneratedCodeInfo_Annotation *msg, upb_arena *arena, size_t *len) {
   return upb_encode(msg, &google_protobuf_GeneratedCodeInfo_Annotation_msginit, arena, len);
diff --git a/tests/conformance_upb.c b/tests/conformance_upb.c
index f920af9..8cb42c6 100644
--- a/tests/conformance_upb.c
+++ b/tests/conformance_upb.c
@@ -63,8 +63,8 @@ void DoTest(
   switch (conformance_ConformanceRequest_payload_case(request)) {
     case conformance_ConformanceRequest_payload_protobuf_payload: {
       upb_strview payload = conformance_ConformanceRequest_protobuf_payload(request);
-      test_message = protobuf_test_messages_proto3_TestAllTypesProto3_parsenew(
-          payload, arena);
+      test_message = protobuf_test_messages_proto3_TestAllTypesProto3_parse(
+          payload.data, payload.size, arena);
 
       if (!test_message) {
         static const char msg[] = "Parse error";
@@ -154,8 +154,8 @@ bool DoTestIo() {
     exit(1);
   }
 
-  request = conformance_ConformanceRequest_parsenew(
-      upb_strview_make(serialized_input, input_size), &arena);
+  request = conformance_ConformanceRequest_parse(serialized_input, input_size,
+                                                 &arena);
   response = conformance_ConformanceResponse_new(&arena);
 
   if (request) {
diff --git a/upb/bindings/lua/upb/pb.c b/upb/bindings/lua/upb/pb.c
index b5284df..824ac13 100644
--- a/upb/bindings/lua/upb/pb.c
+++ b/upb/bindings/lua/upb/pb.c
@@ -16,9 +16,8 @@ static int lupb_pb_decode(lua_State *L) {
   const upb_msglayout *layout;
   upb_msg *msg = lupb_msg_checkmsg2(L, 1, &layout);
   const char *pb = lua_tolstring(L, 2, &len);
-  upb_strview buf = upb_strview_make(pb, len);
 
-  upb_decode(buf, msg, layout);
+  upb_decode(pb, len, msg, layout);
   /* TODO(haberman): check for error. */
 
   return 0;
diff --git a/upb/decode.c b/upb/decode.c
index c54ee3c..5315187 100644
--- a/upb/decode.c
+++ b/upb/decode.c
@@ -584,11 +584,12 @@ static bool upb_decode_message(upb_decstate *d, const char *limit,
   return true;
 }
 
-bool upb_decode(upb_strview buf, void *msg, const upb_msglayout *l) {
+bool upb_decode(const char *buf, size_t size, void *msg,
+                const upb_msglayout *l) {
   upb_decstate state;
-  state.ptr = buf.data;
+  state.ptr = buf;
 
-  return upb_decode_message(&state, buf.data + buf.size, 0, msg, l);
+  return upb_decode_message(&state, buf + size, 0, msg, l);
 }
 
 #undef CHK
diff --git a/upb/decode.h b/upb/decode.h
index dee4c0f..224e606 100644
--- a/upb/decode.h
+++ b/upb/decode.h
@@ -9,7 +9,8 @@
 
 UPB_BEGIN_EXTERN_C
 
-bool upb_decode(upb_strview buf, upb_msg *msg, const upb_msglayout *l);
+bool upb_decode(const char *buf, size_t size, upb_msg *msg,
+                const upb_msglayout *l);
 
 UPB_END_EXTERN_C
 
diff --git a/upbc/generator.cc b/upbc/generator.cc
index 42e249e..6c0179a 100644
--- a/upbc/generator.cc
+++ b/upbc/generator.cc
@@ -325,9 +325,10 @@ void GenerateMessageInHeader(const protobuf::Descriptor* message, Output& output
       "UPB_INLINE $0 *$0_new(upb_arena *arena) {\n"
       "  return ($0 *)upb_msg_new(&$1, arena);\n"
       "}\n"
-      "UPB_INLINE $0 *$0_parsenew(upb_strview buf, upb_arena *arena) {\n"
+      "UPB_INLINE $0 *$0_parse(const char *buf, size_t size,\n"
+      "                        upb_arena *arena) {\n"
       "  $0 *ret = $0_new(arena);\n"
-      "  return (ret && upb_decode(buf, ret, &$1)) ? ret : NULL;\n"
+      "  return (ret && upb_decode(buf, size, ret, &$1)) ? ret : NULL;\n"
       "}\n"
       "UPB_INLINE char *$0_serialize(const $0 *msg, upb_arena *arena, size_t "
       "*len) {\n"