Fix upbc and descriptorgen, and update descriptor.

7 files changed, 326 insertions, 311 deletions

diff --git a/src/descriptor.c b/src/descriptor.c
index ee6b25b..1ded4b1 100644
--- a/src/descriptor.c
+++ b/src/descriptor.c
@@ -1,297 +1,293 @@
-#include "descriptor.h"
-
-static unsigned char descriptor_pb[] = {
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+unsigned char descriptor_pb[] = {
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 };
-static const unsigned int descriptor_pb_len = 3486;
-upb_string descriptor_str = UPB_STATIC_STRING(descriptor_pb);
+unsigned int descriptor_pb_len = 3479;
diff --git a/src/descriptor_const.h b/src/descriptor_const.h
index 42205a6..ed85f2e 100644
--- a/src/descriptor_const.h
+++ b/src/descriptor_const.h
@@ -1,7 +1,7 @@
 /* This file was generated by upbc (the upb compiler).  Do not edit. */
 
-#ifndef DESCRIPTOR_DESCRIPTOR_C
-#define DESCRIPTOR_DESCRIPTOR_C
+#ifndef SRC_DESCRIPTOR_CONST_C
+#define SRC_DESCRIPTOR_CONST_C
 
 #ifdef __cplusplus
 extern "C" {
@@ -15,35 +15,35 @@ typedef enum google_protobuf_FieldOptions_CType {
 } google_protobuf_FieldOptions_CType;
 
 typedef enum google_protobuf_FieldDescriptorProto_Type {
-  GOOGLE_PROTOBUF_FIELDDESCRIPTORPROTO_TYPE_FIXED64 = 6,
-  GOOGLE_PROTOBUF_FIELDDESCRIPTORPROTO_TYPE_BOOL = 8,
-  GOOGLE_PROTOBUF_FIELDDESCRIPTORPROTO_TYPE_MESSAGE = 11,
-  GOOGLE_PROTOBUF_FIELDDESCRIPTORPROTO_TYPE_BYTES = 12,
-  GOOGLE_PROTOBUF_FIELDDESCRIPTORPROTO_TYPE_SFIXED64 = 16,
-  GOOGLE_PROTOBUF_FIELDDESCRIPTORPROTO_TYPE_STRING = 9,
-  GOOGLE_PROTOBUF_FIELDDESCRIPTORPROTO_TYPE_FLOAT = 2,
   GOOGLE_PROTOBUF_FIELDDESCRIPTORPROTO_TYPE_DOUBLE = 1,
+  GOOGLE_PROTOBUF_FIELDDESCRIPTORPROTO_TYPE_FLOAT = 2,
+  GOOGLE_PROTOBUF_FIELDDESCRIPTORPROTO_TYPE_INT64 = 3,
+  GOOGLE_PROTOBUF_FIELDDESCRIPTORPROTO_TYPE_UINT64 = 4,
   GOOGLE_PROTOBUF_FIELDDESCRIPTORPROTO_TYPE_INT32 = 5,
-  GOOGLE_PROTOBUF_FIELDDESCRIPTORPROTO_TYPE_SFIXED32 = 15,
+  GOOGLE_PROTOBUF_FIELDDESCRIPTORPROTO_TYPE_FIXED64 = 6,
   GOOGLE_PROTOBUF_FIELDDESCRIPTORPROTO_TYPE_FIXED32 = 7,
+  GOOGLE_PROTOBUF_FIELDDESCRIPTORPROTO_TYPE_BOOL = 8,
+  GOOGLE_PROTOBUF_FIELDDESCRIPTORPROTO_TYPE_STRING = 9,
   GOOGLE_PROTOBUF_FIELDDESCRIPTORPROTO_TYPE_GROUP = 10,
-  GOOGLE_PROTOBUF_FIELDDESCRIPTORPROTO_TYPE_INT64 = 3,
-  GOOGLE_PROTOBUF_FIELDDESCRIPTORPROTO_TYPE_ENUM = 14,
+  GOOGLE_PROTOBUF_FIELDDESCRIPTORPROTO_TYPE_MESSAGE = 11,
+  GOOGLE_PROTOBUF_FIELDDESCRIPTORPROTO_TYPE_BYTES = 12,
   GOOGLE_PROTOBUF_FIELDDESCRIPTORPROTO_TYPE_UINT32 = 13,
-  GOOGLE_PROTOBUF_FIELDDESCRIPTORPROTO_TYPE_UINT64 = 4,
-  GOOGLE_PROTOBUF_FIELDDESCRIPTORPROTO_TYPE_SINT64 = 18,
-  GOOGLE_PROTOBUF_FIELDDESCRIPTORPROTO_TYPE_SINT32 = 17
+  GOOGLE_PROTOBUF_FIELDDESCRIPTORPROTO_TYPE_ENUM = 14,
+  GOOGLE_PROTOBUF_FIELDDESCRIPTORPROTO_TYPE_SFIXED32 = 15,
+  GOOGLE_PROTOBUF_FIELDDESCRIPTORPROTO_TYPE_SFIXED64 = 16,
+  GOOGLE_PROTOBUF_FIELDDESCRIPTORPROTO_TYPE_SINT32 = 17,
+  GOOGLE_PROTOBUF_FIELDDESCRIPTORPROTO_TYPE_SINT64 = 18
 } google_protobuf_FieldDescriptorProto_Type;
 
 typedef enum google_protobuf_FieldDescriptorProto_Label {
+  GOOGLE_PROTOBUF_FIELDDESCRIPTORPROTO_LABEL_OPTIONAL = 1,
   GOOGLE_PROTOBUF_FIELDDESCRIPTORPROTO_LABEL_REQUIRED = 2,
-  GOOGLE_PROTOBUF_FIELDDESCRIPTORPROTO_LABEL_REPEATED = 3,
-  GOOGLE_PROTOBUF_FIELDDESCRIPTORPROTO_LABEL_OPTIONAL = 1
+  GOOGLE_PROTOBUF_FIELDDESCRIPTORPROTO_LABEL_REPEATED = 3
 } google_protobuf_FieldDescriptorProto_Label;
 
 typedef enum google_protobuf_FileOptions_OptimizeMode {
-  GOOGLE_PROTOBUF_FILEOPTIONS_CODE_SIZE = 2,
-  GOOGLE_PROTOBUF_FILEOPTIONS_SPEED = 1
+  GOOGLE_PROTOBUF_FILEOPTIONS_SPEED = 1,
+  GOOGLE_PROTOBUF_FILEOPTIONS_CODE_SIZE = 2
 } google_protobuf_FileOptions_OptimizeMode;
 
 /* Constants for field names and numbers. */
@@ -134,20 +134,20 @@ typedef enum google_protobuf_FileOptions_OptimizeMode {
 #define GOOGLE_PROTOBUF_FIELDOPTIONS_PACKED_FIELDNAME "packed"
 #define GOOGLE_PROTOBUF_FIELDOPTIONS_DEPRECATED_FIELDNUM 3
 #define GOOGLE_PROTOBUF_FIELDOPTIONS_DEPRECATED_FIELDNAME "deprecated"
-#define GOOGLE_PROTOBUF_FIELDOPTIONS_EXPERIMENTAL_MAP_KEY_FIELDNUM 9
-#define GOOGLE_PROTOBUF_FIELDOPTIONS_EXPERIMENTAL_MAP_KEY_FIELDNAME "experimental_map_key"
 #define GOOGLE_PROTOBUF_FIELDOPTIONS_UNINTERPRETED_OPTION_FIELDNUM 999
 #define GOOGLE_PROTOBUF_FIELDOPTIONS_UNINTERPRETED_OPTION_FIELDNAME "uninterpreted_option"
+#define GOOGLE_PROTOBUF_FIELDOPTIONS_EXPERIMENTAL_MAP_KEY_FIELDNUM 9
+#define GOOGLE_PROTOBUF_FIELDOPTIONS_EXPERIMENTAL_MAP_KEY_FIELDNAME "experimental_map_key"
 #define GOOGLE_PROTOBUF_FILEOPTIONS_JAVA_PACKAGE_FIELDNUM 1
 #define GOOGLE_PROTOBUF_FILEOPTIONS_JAVA_PACKAGE_FIELDNAME "java_package"
+#define GOOGLE_PROTOBUF_FILEOPTIONS_UNINTERPRETED_OPTION_FIELDNUM 999
+#define GOOGLE_PROTOBUF_FILEOPTIONS_UNINTERPRETED_OPTION_FIELDNAME "uninterpreted_option"
 #define GOOGLE_PROTOBUF_FILEOPTIONS_JAVA_OUTER_CLASSNAME_FIELDNUM 8
 #define GOOGLE_PROTOBUF_FILEOPTIONS_JAVA_OUTER_CLASSNAME_FIELDNAME "java_outer_classname"
 #define GOOGLE_PROTOBUF_FILEOPTIONS_OPTIMIZE_FOR_FIELDNUM 9
 #define GOOGLE_PROTOBUF_FILEOPTIONS_OPTIMIZE_FOR_FIELDNAME "optimize_for"
 #define GOOGLE_PROTOBUF_FILEOPTIONS_JAVA_MULTIPLE_FILES_FIELDNUM 10
 #define GOOGLE_PROTOBUF_FILEOPTIONS_JAVA_MULTIPLE_FILES_FIELDNAME "java_multiple_files"
-#define GOOGLE_PROTOBUF_FILEOPTIONS_UNINTERPRETED_OPTION_FIELDNUM 999
-#define GOOGLE_PROTOBUF_FILEOPTIONS_UNINTERPRETED_OPTION_FIELDNAME "uninterpreted_option"
 #define GOOGLE_PROTOBUF_MESSAGEOPTIONS_MESSAGE_SET_WIRE_FORMAT_FIELDNUM 1
 #define GOOGLE_PROTOBUF_MESSAGEOPTIONS_MESSAGE_SET_WIRE_FORMAT_FIELDNAME "message_set_wire_format"
 #define GOOGLE_PROTOBUF_MESSAGEOPTIONS_UNINTERPRETED_OPTION_FIELDNUM 999
@@ -178,4 +178,4 @@ typedef enum google_protobuf_FileOptions_OptimizeMode {
 }  /* extern "C" */
 #endif
 
-#endif  /* DESCRIPTOR_DESCRIPTOR_C */
+#endif  /* SRC_DESCRIPTOR_CONST_C */
diff --git a/src/upb_decoder.c b/src/upb_decoder.c
index 4a43c4b..b7ef5a4 100644
--- a/src/upb_decoder.c
+++ b/src/upb_decoder.c
@@ -262,7 +262,7 @@ INLINE bool upb_check_type(upb_wire_type_t wt, upb_fieldtype_t ft) {
 
 static upb_flow_t upb_push(upb_decoder *d, upb_dstate *s, upb_fielddef *f,
                            upb_value submsg_len, upb_fieldtype_t type) {
-  d->top++;
+  ++d->top;
   if(d->top >= d->limit) {
     upb_seterr(d->status, UPB_ERROR, "Nesting too deep.");
     return UPB_ERROR;
@@ -273,11 +273,22 @@ static upb_flow_t upb_push(upb_decoder *d, upb_dstate *s, upb_fielddef *f,
           upb_value_getint32(submsg_len);
   d->top->msgdef = upb_downcast_msgdef(f->def);
   upb_dstate_setmsgend(d, s);
-  return upb_dispatch_startsubmsg(&d->dispatcher, f);
+  upb_flow_t ret = upb_dispatch_startsubmsg(&d->dispatcher, f);
+  if (ret == UPB_SKIPSUBMSG) {
+    if (type == UPB_TYPE(GROUP)) {
+      fprintf(stderr, "upb_decoder: Can't skip groups yet.\n");
+      abort();
+    }
+    upb_dstate_advance(s, upb_value_getint32(submsg_len));
+    --d->top;
+    upb_dstate_setmsgend(d, s);
+    ret = UPB_CONTINUE;
+  }
+  return ret;
 }
 
 static upb_flow_t upb_pop(upb_decoder *d, upb_dstate *s) {
-  d->top--;
+  --d->top;
   upb_dstate_setmsgend(d, s);
   return upb_dispatch_endsubmsg(&d->dispatcher);
 }
@@ -291,7 +302,7 @@ void upb_decoder_run(upb_src *src, upb_status *status) {
   upb_dstate state = {NULL, (void*)0x1, 0, d->top->msgdef};
 
 // TODO: handle UPB_SKIPSUBMSG
-#define CHECK_FLOW(expr) if ((expr) == UPB_BREAK) { assert(!upb_ok(status)); goto err; }
+#define CHECK_FLOW(expr) if ((expr) == UPB_BREAK) { /*assert(!upb_ok(status));*/ goto err; }
 #define CHECK(expr) if (!expr) { assert(!upb_ok(status)); goto err; }
 
   CHECK_FLOW(upb_dispatch_startmsg(&d->dispatcher));
@@ -355,11 +366,14 @@ void upb_decoder_run(upb_src *src, upb_status *status) {
       if (tag.wire_type == UPB_WIRE_TYPE_DELIMITED)
         CHECK(upb_decode_string(d, &val, &d->tmp, &state));
       CHECK_FLOW(upb_dispatch_unknownval(&d->dispatcher, tag.field_number, val));
+      continue;
     } else if (!upb_check_type(tag.wire_type, f->type)) {
       // TODO: put more details in this error msg.
-      upb_seterr(status, UPB_ERROR, "Field had incorrect type, name: " UPB_STRFMT, UPB_STRARG(f->name));
+      upb_seterr(status, UPB_ERROR, "Field had incorrect type, name: " UPB_STRFMT
+                 ", field type: %d, expected wire type %d, actual wire type: %d",
+                 UPB_STRARG(f->name), f->type, upb_types[f->type].native_wire_type,
+                 tag.wire_type);
       upb_printerr(status);
-      *(int*)0 = 0;
       goto err;
     }
 
@@ -396,6 +410,7 @@ void upb_decoder_run(upb_src *src, upb_status *status) {
   }
 
 err:
+  upb_copyerr(status, d->dispatcher.top->handlers.status);
   if (upb_ok(status)) {
     upb_seterr(status, UPB_ERROR, "Callback returned UPB_BREAK");
   }
@@ -403,7 +418,7 @@ err:
 
 void upb_decoder_sethandlers(upb_src *src, upb_handlers *handlers) {
   upb_decoder *d = (upb_decoder*)src;
-  upb_dispatcher_reset(&d->dispatcher, handlers, false);
+  upb_dispatcher_reset(&d->dispatcher, handlers, true);
   d->top = d->stack;
   d->buf_stream_offset = 0;
   d->top->msgdef = d->toplevel_msgdef;
diff --git a/src/upb_def.c b/src/upb_def.c
index 651afc1..7e962c8 100644
--- a/src/upb_def.c
+++ b/src/upb_def.c
@@ -6,8 +6,8 @@
 
 #include <stdlib.h>
 #include <stddef.h>
+#include "descriptor.c"
 #include "descriptor_const.h"
-#include "descriptor.h"
 #include "upb_def.h"
 
 #define alignof(t) offsetof(struct { char c; t x; }, x)
@@ -218,8 +218,7 @@ static void upb_deflist_init(upb_deflist *l) {
 }
 
 static void upb_deflist_uninit(upb_deflist *l) {
-  for(uint32_t i = 0; i < l->len; i++)
-    if(l->defs[i]) upb_def_unref(l->defs[i]);
+  for(uint32_t i = 0; i < l->len; i++) upb_def_unref(l->defs[i]);
   free(l->defs);
 }
 
@@ -759,6 +758,7 @@ static upb_flow_t upb_msgdef_value(void *_b, upb_fielddef *f, upb_value val) {
   upb_defbuilder *b = _b;
   switch(f->number) {
     case GOOGLE_PROTOBUF_DESCRIPTORPROTO_NAME_FIELDNUM: {
+      assert(val.type == UPB_TYPE(STRING));
       upb_msgdef *m = upb_defbuilder_top(b);
       upb_string_unref(m->base.fqname);
       m->base.fqname = upb_string_getref(upb_value_getstr(val));
@@ -788,7 +788,6 @@ static upb_flow_t upb_msgdef_startsubmsg(void *_b, upb_fielddef *f,
     case GOOGLE_PROTOBUF_DESCRIPTORPROTO_ENUM_TYPE_FIELDNUM:
       upb_enumdef_register_EnumDescriptorProto(b, h);
       return UPB_DELEGATE;
-      break;
     default:
       return UPB_SKIPSUBMSG;
   }
@@ -1054,7 +1053,6 @@ err:
     upb_def_unref(e->def);
   }
   upb_strtable_free(&tmptab);
-  for (int i = 0; i < num_defs; i++) upb_def_unref(defs[i]);
   return false;
 }
 
@@ -1318,8 +1316,10 @@ void upb_symtab_add_descriptorproto(upb_symtab *symtab) {
   // For the moment we silently decline to perform the operation if the symbols
   // already exist in the symtab.  Revisit this when we have a better story
   // about whether syms in a table can be replaced.
-  if(symtab->fds_msgdef) upb_def_unref(UPB_UPCAST(symtab->fds_msgdef));
+  if(symtab->fds_msgdef) return;
 
+  static upb_string descriptor_str =
+      UPB_STATIC_STRING_ARRAY(descriptor_pb);
   upb_baredecoder *decoder = upb_baredecoder_new(&descriptor_str);
   upb_status status = UPB_STATUS_INIT;
   upb_symtab_addfds(symtab, upb_baredecoder_src(decoder), &status);
diff --git a/src/upb_glue.c b/src/upb_glue.c
index 541827e..536adc0 100644
--- a/src/upb_glue.c
+++ b/src/upb_glue.c
@@ -38,6 +38,7 @@ void upb_strtomsg(upb_string *str, upb_msg *msg, upb_msgdef *md,
 }
 
 void upb_parsedesc(upb_symtab *symtab, upb_string *str, upb_status *status) {
+  upb_symtab_add_descriptorproto(symtab);
   upb_stringsrc strsrc;
   upb_stringsrc_init(&strsrc);
   upb_stringsrc_reset(&strsrc, str);
diff --git a/src/upb_stream_vtbl.h b/src/upb_stream_vtbl.h
index e1f9cb8..10ee917 100644
--- a/src/upb_stream_vtbl.h
+++ b/src/upb_stream_vtbl.h
@@ -268,6 +268,7 @@ INLINE upb_flow_t upb_dispatch_endsubmsg(upb_dispatcher *d) {
   upb_flow_t ret;
   if (--d->top->depth == 0) {
     ret = d->top->handlers.set->endmsg(d->top->handlers.closure);
+    //assert(ret != UPB_BREAK);
     if (ret != UPB_CONTINUE) return ret;
     --d->top;
     assert(d->top >= d->stack);
diff --git a/src/upb_string.h b/src/upb_string.h
index 0694a23..3799c5e 100644
--- a/src/upb_string.h
+++ b/src/upb_string.h
@@ -247,6 +247,8 @@ void upb_string_substr(upb_string *str, upb_string *target_str,
 // until there is a clear use case.
 #define UPB_STATIC_STRING(str) \
     _UPB_STRING_INIT(str, sizeof(str)-1, _UPB_STRING_REFCOUNT_STATIC)
+#define UPB_STATIC_STRING_ARRAY(str) \
+    _UPB_STRING_INIT(str, sizeof(str), _UPB_STRING_REFCOUNT_STATIC)
 #define UPB_STATIC_STRING_LEN(str, len) \
     _UPB_STRING_INIT(str, len, _UPB_STRING_REFCOUNT_STATIC)
 #define UPB_STACK_STRING(str) \