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protobuf/upb/def.c

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#include "upb/def.h"
#include <ctype.h>
#include <errno.h>
#include <stdlib.h>
#include <string.h>
#include "google/protobuf/descriptor.upb.h"
#include "upb/handlers.h"
typedef struct {
size_t len;
char str[1]; /* Null-terminated string data follows. */
} str_t;
static str_t *newstr(upb_alloc *alloc, const char *data, size_t len) {
str_t *ret = upb_malloc(alloc, sizeof(*ret) + len);
if (!ret) return NULL;
ret->len = len;
memcpy(ret->str, data, len);
ret->str[len] = '\0';
return ret;
}
struct upb_fielddef {
const upb_filedef *file;
const upb_msgdef *msgdef;
const char *full_name;
union {
int64_t sint;
uint64_t uint;
double dbl;
float flt;
bool boolean;
str_t *str;
} defaultval;
const upb_oneofdef *oneof;
union {
const upb_msgdef *msgdef;
const upb_enumdef *enumdef;
const google_protobuf_FieldDescriptorProto *unresolved;
} sub;
uint32_t number_;
uint32_t index_;
uint32_t selector_base; /* Used to index into a upb::Handlers table. */
bool is_extension_;
bool lazy_;
bool packed_;
upb_descriptortype_t type_;
upb_label_t label_;
};
struct upb_msgdef {
const upb_filedef *file;
const char *full_name;
uint32_t selector_count;
uint32_t submsg_field_count;
/* Tables for looking up fields by number and name. */
upb_inttable itof;
upb_strtable ntof;
const upb_fielddef *fields;
const upb_oneofdef *oneofs;
int field_count;
int oneof_count;
/* Is this a map-entry message? */
bool map_entry;
upb_wellknowntype_t well_known_type;
/* TODO(haberman): proper extension ranges (there can be multiple). */
};
struct upb_enumdef {
const upb_filedef *file;
const char *full_name;
upb_strtable ntoi;
upb_inttable iton;
int32_t defaultval;
};
struct upb_oneofdef {
const upb_msgdef *parent;
const char *full_name;
uint32_t index;
upb_strtable ntof;
upb_inttable itof;
};
struct upb_filedef {
const char *name;
const char *package;
const char *phpprefix;
const char *phpnamespace;
upb_syntax_t syntax;
const upb_filedef **deps;
const upb_msgdef *msgs;
const upb_enumdef *enums;
const upb_fielddef *exts;
int dep_count;
int msg_count;
int enum_count;
int ext_count;
};
/* Inside a symtab we store tagged pointers to specific def types. */
typedef enum {
UPB_DEFTYPE_MSG = 0,
UPB_DEFTYPE_ENUM = 1,
UPB_DEFTYPE_FIELD = 2,
UPB_DEFTYPE_ONEOF = 3
} upb_deftype_t;
static const void *unpack_def(upb_value v, upb_deftype_t type) {
uintptr_t num = (uintptr_t)upb_value_getconstptr(v);
return (num & 3) == type ? (const void*)(num & ~3) : NULL;
}
static upb_value pack_def(const void *ptr, upb_deftype_t type) {
uintptr_t num = (uintptr_t)ptr | type;
return upb_value_constptr((const void*)num);
}
struct upb_symtab {
upb_arena arena;
upb_strtable syms; /* full_name -> packed def ptr */
upb_strtable files; /* file_name -> upb_filedef* */
};
/* isalpha() etc. from <ctype.h> are locale-dependent, which we don't want. */
static bool upb_isbetween(char c, char low, char high) {
return c >= low && c <= high;
}
static bool upb_isletter(char c) {
return upb_isbetween(c, 'A', 'Z') || upb_isbetween(c, 'a', 'z') || c == '_';
}
static bool upb_isalphanum(char c) {
return upb_isletter(c) || upb_isbetween(c, '0', '9');
}
static bool upb_isident(upb_stringview name, bool full, upb_status *s) {
const char *str = name.data;
size_t len = name.size;
bool start = true;
size_t i;
for (i = 0; i < len; i++) {
char c = str[i];
if (c == '.') {
if (start || !full) {
upb_status_seterrf(s, "invalid name: unexpected '.' (%s)", str);
return false;
}
start = true;
} else if (start) {
if (!upb_isletter(c)) {
upb_status_seterrf(
s, "invalid name: path components must start with a letter (%s)",
str);
return false;
}
start = false;
} else {
if (!upb_isalphanum(c)) {
upb_status_seterrf(s, "invalid name: non-alphanumeric character (%s)",
str);
return false;
}
}
}
return !start;
}
static const char *shortdefname(const char *fullname) {
const char *p;
if (fullname == NULL) {
return NULL;
} else if ((p = strrchr(fullname, '.')) == NULL) {
/* No '.' in the name, return the full string. */
return fullname;
} else {
/* Return one past the last '.'. */
return p + 1;
}
}
static bool upb_isoneof(const void *def) {
UPB_UNUSED(def);
return true;
}
static bool upb_isfield(const void *def) {
UPB_UNUSED(def);
return true;
}
static const upb_oneofdef *upb_trygetoneof(const void *def) {
return upb_isoneof(def) ? (const upb_oneofdef*)def : NULL;
}
static const upb_fielddef *upb_trygetfield(const void *def) {
return upb_isfield(def) ? (const upb_fielddef*)def : NULL;
}
/* All submessage fields are lower than all other fields.
* Secondly, fields are increasing in order. */
uint32_t field_rank(const upb_fielddef *f) {
uint32_t ret = upb_fielddef_number(f);
const uint32_t high_bit = 1 << 30;
UPB_ASSERT(ret < high_bit);
if (!upb_fielddef_issubmsg(f))
ret |= high_bit;
return ret;
}
int cmp_fields(const void *p1, const void *p2) {
const upb_fielddef *f1 = *(upb_fielddef*const*)p1;
const upb_fielddef *f2 = *(upb_fielddef*const*)p2;
return field_rank(f1) - field_rank(f2);
}
static bool assign_msg_indices(upb_msgdef *m, upb_status *s) {
/* Sort fields. upb internally relies on UPB_TYPE_MESSAGE fields having the
* lowest indexes, but we do not publicly guarantee this. */
upb_msg_field_iter j;
upb_msg_oneof_iter k;
int i;
uint32_t selector;
int n = upb_msgdef_numfields(m);
upb_fielddef **fields;
if (n == 0) {
m->selector_count = UPB_STATIC_SELECTOR_COUNT;
m->submsg_field_count = 0;
return true;
}
fields = upb_gmalloc(n * sizeof(*fields));
if (!fields) {
upb_upberr_setoom(s);
return false;
}
m->submsg_field_count = 0;
for(i = 0, upb_msg_field_begin(&j, m);
!upb_msg_field_done(&j);
upb_msg_field_next(&j), i++) {
upb_fielddef *f = upb_msg_iter_field(&j);
UPB_ASSERT(f->msgdef == m);
if (upb_fielddef_issubmsg(f)) {
m->submsg_field_count++;
}
fields[i] = f;
}
qsort(fields, n, sizeof(*fields), cmp_fields);
selector = UPB_STATIC_SELECTOR_COUNT + m->submsg_field_count;
for (i = 0; i < n; i++) {
upb_fielddef *f = fields[i];
f->index_ = i;
f->selector_base = selector + upb_handlers_selectorbaseoffset(f);
selector += upb_handlers_selectorcount(f);
}
m->selector_count = selector;
#ifndef NDEBUG
{
/* Verify that all selectors for the message are distinct. */
#define TRY(type) \
if (upb_handlers_getselector(f, type, &sel)) upb_inttable_insert(&t, sel, v);
upb_inttable t;
upb_value v;
upb_selector_t sel;
upb_inttable_init(&t, UPB_CTYPE_BOOL);
v = upb_value_bool(true);
upb_inttable_insert(&t, UPB_STARTMSG_SELECTOR, v);
upb_inttable_insert(&t, UPB_ENDMSG_SELECTOR, v);
upb_inttable_insert(&t, UPB_UNKNOWN_SELECTOR, v);
for(upb_msg_field_begin(&j, m);
!upb_msg_field_done(&j);
upb_msg_field_next(&j)) {
upb_fielddef *f = upb_msg_iter_field(&j);
/* These calls will assert-fail in upb_table if the value already
* exists. */
TRY(UPB_HANDLER_INT32);
TRY(UPB_HANDLER_INT64)
TRY(UPB_HANDLER_UINT32)
TRY(UPB_HANDLER_UINT64)
TRY(UPB_HANDLER_FLOAT)
TRY(UPB_HANDLER_DOUBLE)
TRY(UPB_HANDLER_BOOL)
TRY(UPB_HANDLER_STARTSTR)
TRY(UPB_HANDLER_STRING)
TRY(UPB_HANDLER_ENDSTR)
TRY(UPB_HANDLER_STARTSUBMSG)
TRY(UPB_HANDLER_ENDSUBMSG)
TRY(UPB_HANDLER_STARTSEQ)
TRY(UPB_HANDLER_ENDSEQ)
}
upb_inttable_uninit(&t);
}
#undef TRY
#endif
for(upb_msg_oneof_begin(&k, m), i = 0;
!upb_msg_oneof_done(&k);
upb_msg_oneof_next(&k), i++) {
upb_oneofdef *o = upb_msg_iter_oneof(&k);
o->index = i;
}
upb_gfree(fields);
return true;
}
static void assign_msg_wellknowntype(upb_msgdef *m) {
const char *name = upb_msgdef_fullname(m);
if (name == NULL) {
m->well_known_type = UPB_WELLKNOWN_UNSPECIFIED;
return;
}
if (!strcmp(name, "google.protobuf.Any")) {
m->well_known_type = UPB_WELLKNOWN_ANY;
} else if (!strcmp(name, "google.protobuf.Duration")) {
m->well_known_type = UPB_WELLKNOWN_DURATION;
} else if (!strcmp(name, "google.protobuf.Timestamp")) {
m->well_known_type = UPB_WELLKNOWN_TIMESTAMP;
} else if (!strcmp(name, "google.protobuf.DoubleValue")) {
m->well_known_type = UPB_WELLKNOWN_DOUBLEVALUE;
} else if (!strcmp(name, "google.protobuf.FloatValue")) {
m->well_known_type = UPB_WELLKNOWN_FLOATVALUE;
} else if (!strcmp(name, "google.protobuf.Int64Value")) {
m->well_known_type = UPB_WELLKNOWN_INT64VALUE;
} else if (!strcmp(name, "google.protobuf.UInt64Value")) {
m->well_known_type = UPB_WELLKNOWN_UINT64VALUE;
} else if (!strcmp(name, "google.protobuf.Int32Value")) {
m->well_known_type = UPB_WELLKNOWN_INT32VALUE;
} else if (!strcmp(name, "google.protobuf.UInt32Value")) {
m->well_known_type = UPB_WELLKNOWN_UINT32VALUE;
} else if (!strcmp(name, "google.protobuf.BoolValue")) {
m->well_known_type = UPB_WELLKNOWN_BOOLVALUE;
} else if (!strcmp(name, "google.protobuf.StringValue")) {
m->well_known_type = UPB_WELLKNOWN_STRINGVALUE;
} else if (!strcmp(name, "google.protobuf.BytesValue")) {
m->well_known_type = UPB_WELLKNOWN_BYTESVALUE;
} else if (!strcmp(name, "google.protobuf.Value")) {
m->well_known_type = UPB_WELLKNOWN_VALUE;
} else if (!strcmp(name, "google.protobuf.ListValue")) {
m->well_known_type = UPB_WELLKNOWN_LISTVALUE;
} else if (!strcmp(name, "google.protobuf.Struct")) {
m->well_known_type = UPB_WELLKNOWN_STRUCT;
} else {
m->well_known_type = UPB_WELLKNOWN_UNSPECIFIED;
}
}
#if 0
bool _upb_def_validate(upb_def *const*defs, size_t n, upb_status *s) {
size_t i;
/* First perform validation, in two passes so we can check that we have a
* transitive closure without needing to search. */
for (i = 0; i < n; i++) {
upb_def *def = defs[i];
if (upb_def_isfrozen(def)) {
/* Could relax this requirement if it's annoying. */
upb_status_seterrmsg(s, "def is already frozen");
goto err;
} else if (def->type == UPB_DEF_FIELD) {
upb_status_seterrmsg(s, "standalone fielddefs can not be frozen");
goto err;
} else {
/* Set now to detect transitive closure in the second pass. */
def->came_from_user = true;
if (def->type == UPB_DEF_ENUM &&
!upb_validate_enumdef(upb_dyncast_enumdef(def), s)) {
goto err;
}
}
}
/* Second pass of validation. Also assign selector bases and indexes, and
* compact tables. */
for (i = 0; i < n; i++) {
upb_def *def = defs[i];
upb_msgdef *m = upb_dyncast_msgdef_mutable(def);
upb_enumdef *e = upb_dyncast_enumdef_mutable(def);
if (m) {
upb_inttable_compact(&m->itof);
if (!assign_msg_indices(m, s)) {
goto err;
}
assign_msg_wellknowntype(m);
/* m->well_known_type = UPB_WELLKNOWN_UNSPECIFIED; */
} else if (e) {
upb_inttable_compact(&e->iton);
}
}
return true;
err:
for (i = 0; i < n; i++) {
upb_def *def = defs[i];
def->came_from_user = false;
}
UPB_ASSERT(!(s && upb_ok(s)));
return false;
}
#endif
/* upb_enumdef ****************************************************************/
const char *upb_enumdef_fullname(const upb_enumdef *e) {
return e->full_name;
}
const char *upb_enumdef_name(const upb_enumdef *e) {
return shortdefname(e->full_name);
}
int32_t upb_enumdef_default(const upb_enumdef *e) {
UPB_ASSERT(upb_enumdef_iton(e, e->defaultval));
return e->defaultval;
}
int upb_enumdef_numvals(const upb_enumdef *e) {
return upb_strtable_count(&e->ntoi);
}
void upb_enum_begin(upb_enum_iter *i, const upb_enumdef *e) {
/* We iterate over the ntoi table, to account for duplicate numbers. */
upb_strtable_begin(i, &e->ntoi);
}
void upb_enum_next(upb_enum_iter *iter) { upb_strtable_next(iter); }
bool upb_enum_done(upb_enum_iter *iter) { return upb_strtable_done(iter); }
bool upb_enumdef_ntoi(const upb_enumdef *def, const char *name,
size_t len, int32_t *num) {
upb_value v;
if (!upb_strtable_lookup2(&def->ntoi, name, len, &v)) {
return false;
}
if (num) *num = upb_value_getint32(v);
return true;
}
const char *upb_enumdef_iton(const upb_enumdef *def, int32_t num) {
upb_value v;
return upb_inttable_lookup32(&def->iton, num, &v) ?
upb_value_getcstr(v) : NULL;
}
const char *upb_enum_iter_name(upb_enum_iter *iter) {
return upb_strtable_iter_key(iter);
}
int32_t upb_enum_iter_number(upb_enum_iter *iter) {
return upb_value_getint32(upb_strtable_iter_value(iter));
}
/* upb_fielddef ***************************************************************/
const char *upb_fielddef_fullname(const upb_fielddef *f) {
return f->full_name;
}
upb_fieldtype_t upb_fielddef_type(const upb_fielddef *f) {
switch (f->type_) {
case UPB_DESCRIPTOR_TYPE_DOUBLE:
return UPB_TYPE_DOUBLE;
case UPB_DESCRIPTOR_TYPE_FLOAT:
return UPB_TYPE_FLOAT;
case UPB_DESCRIPTOR_TYPE_INT64:
case UPB_DESCRIPTOR_TYPE_SINT64:
case UPB_DESCRIPTOR_TYPE_SFIXED64:
return UPB_TYPE_INT64;
case UPB_DESCRIPTOR_TYPE_INT32:
case UPB_DESCRIPTOR_TYPE_SFIXED32:
case UPB_DESCRIPTOR_TYPE_SINT32:
return UPB_TYPE_INT32;
case UPB_DESCRIPTOR_TYPE_UINT64:
case UPB_DESCRIPTOR_TYPE_FIXED64:
return UPB_TYPE_UINT64;
case UPB_DESCRIPTOR_TYPE_UINT32:
case UPB_DESCRIPTOR_TYPE_FIXED32:
return UPB_TYPE_UINT32;
case UPB_DESCRIPTOR_TYPE_ENUM:
return UPB_TYPE_ENUM;
case UPB_DESCRIPTOR_TYPE_BOOL:
return UPB_TYPE_BOOL;
case UPB_DESCRIPTOR_TYPE_STRING:
return UPB_TYPE_STRING;
case UPB_DESCRIPTOR_TYPE_BYTES:
return UPB_TYPE_BYTES;
case UPB_DESCRIPTOR_TYPE_GROUP:
case UPB_DESCRIPTOR_TYPE_MESSAGE:
return UPB_TYPE_MESSAGE;
}
UPB_UNREACHABLE();
}
upb_descriptortype_t upb_fielddef_descriptortype(const upb_fielddef *f) {
return f->type_;
}
uint32_t upb_fielddef_index(const upb_fielddef *f) {
return f->index_;
}
upb_label_t upb_fielddef_label(const upb_fielddef *f) {
return f->label_;
}
uint32_t upb_fielddef_number(const upb_fielddef *f) {
return f->number_;
}
bool upb_fielddef_isextension(const upb_fielddef *f) {
return f->is_extension_;
}
bool upb_fielddef_lazy(const upb_fielddef *f) {
return f->lazy_;
}
bool upb_fielddef_packed(const upb_fielddef *f) {
return f->packed_;
}
const char *upb_fielddef_name(const upb_fielddef *f) {
return f->full_name;
}
size_t upb_fielddef_getjsonname(const upb_fielddef *f, char *buf, size_t len) {
const char *name = upb_fielddef_name(f);
size_t src, dst = 0;
bool ucase_next = false;
#define WRITE(byte) \
++dst; \
if (dst < len) buf[dst - 1] = byte; \
else if (dst == len) buf[dst - 1] = '\0'
if (!name) {
WRITE('\0');
return 0;
}
/* Implement the transformation as described in the spec:
* 1. upper case all letters after an underscore.
* 2. remove all underscores.
*/
for (src = 0; name[src]; src++) {
if (name[src] == '_') {
ucase_next = true;
continue;
}
if (ucase_next) {
WRITE(toupper(name[src]));
ucase_next = false;
} else {
WRITE(name[src]);
}
}
WRITE('\0');
return dst;
#undef WRITE
}
const upb_msgdef *upb_fielddef_containingtype(const upb_fielddef *f) {
return f->msgdef;
}
const upb_oneofdef *upb_fielddef_containingoneof(const upb_fielddef *f) {
return f->oneof;
}
static void chkdefaulttype(const upb_fielddef *f, int ctype) {
UPB_UNUSED(f);
UPB_UNUSED(ctype);
}
int64_t upb_fielddef_defaultint64(const upb_fielddef *f) {
chkdefaulttype(f, UPB_TYPE_INT64);
return f->defaultval.sint;
}
int32_t upb_fielddef_defaultint32(const upb_fielddef *f) {
chkdefaulttype(f, UPB_TYPE_INT32);
return f->defaultval.sint;
}
uint64_t upb_fielddef_defaultuint64(const upb_fielddef *f) {
chkdefaulttype(f, UPB_TYPE_UINT64);
return f->defaultval.uint;
}
uint32_t upb_fielddef_defaultuint32(const upb_fielddef *f) {
chkdefaulttype(f, UPB_TYPE_UINT32);
return f->defaultval.uint;
}
bool upb_fielddef_defaultbool(const upb_fielddef *f) {
chkdefaulttype(f, UPB_TYPE_BOOL);
return f->defaultval.uint;
}
float upb_fielddef_defaultfloat(const upb_fielddef *f) {
chkdefaulttype(f, UPB_TYPE_FLOAT);
return f->defaultval.flt;
}
double upb_fielddef_defaultdouble(const upb_fielddef *f) {
chkdefaulttype(f, UPB_TYPE_DOUBLE);
return f->defaultval.dbl;
}
const char *upb_fielddef_defaultstr(const upb_fielddef *f, size_t *len) {
str_t *str = f->defaultval.str;
UPB_ASSERT(upb_fielddef_type(f) == UPB_TYPE_STRING ||
upb_fielddef_type(f) == UPB_TYPE_BYTES ||
upb_fielddef_type(f) == UPB_TYPE_ENUM);
if (len) *len = str->len;
return str->str;
}
const upb_msgdef *upb_fielddef_msgsubdef(const upb_fielddef *f) {
UPB_ASSERT(upb_fielddef_type(f) == UPB_TYPE_MESSAGE);
return f->sub.msgdef;
}
const upb_enumdef *upb_fielddef_enumsubdef(const upb_fielddef *f) {
UPB_ASSERT(upb_fielddef_type(f) == UPB_TYPE_ENUM);
return f->sub.enumdef;
}
bool upb_fielddef_issubmsg(const upb_fielddef *f) {
return upb_fielddef_type(f) == UPB_TYPE_MESSAGE;
}
bool upb_fielddef_isstring(const upb_fielddef *f) {
return upb_fielddef_type(f) == UPB_TYPE_STRING ||
upb_fielddef_type(f) == UPB_TYPE_BYTES;
}
bool upb_fielddef_isseq(const upb_fielddef *f) {
return upb_fielddef_label(f) == UPB_LABEL_REPEATED;
}
bool upb_fielddef_isprimitive(const upb_fielddef *f) {
return !upb_fielddef_isstring(f) && !upb_fielddef_issubmsg(f);
}
bool upb_fielddef_ismap(const upb_fielddef *f) {
return upb_fielddef_isseq(f) && upb_fielddef_issubmsg(f) &&
upb_msgdef_mapentry(upb_fielddef_msgsubdef(f));
}
bool upb_fielddef_hassubdef(const upb_fielddef *f) {
return upb_fielddef_issubmsg(f) || upb_fielddef_type(f) == UPB_TYPE_ENUM;
}
static bool between(int32_t x, int32_t low, int32_t high) {
return x >= low && x <= high;
}
bool upb_fielddef_checklabel(int32_t label) { return between(label, 1, 3); }
bool upb_fielddef_checktype(int32_t type) { return between(type, 1, 11); }
bool upb_fielddef_checkintfmt(int32_t fmt) { return between(fmt, 1, 3); }
bool upb_fielddef_checkdescriptortype(int32_t type) {
return between(type, 1, 18);
}
/* upb_msgdef *****************************************************************/
const char *upb_msgdef_fullname(const upb_msgdef *m) {
return m->full_name;
}
const char *upb_msgdef_name(const upb_msgdef *m) {
return shortdefname(m->full_name);
}
upb_syntax_t upb_msgdef_syntax(const upb_msgdef *m) {
return m->file->syntax;
}
const upb_fielddef *upb_msgdef_itof(const upb_msgdef *m, uint32_t i) {
upb_value val;
return upb_inttable_lookup32(&m->itof, i, &val) ?
upb_value_getptr(val) : NULL;
}
const upb_fielddef *upb_msgdef_ntof(const upb_msgdef *m, const char *name,
size_t len) {
upb_value val;
if (!upb_strtable_lookup2(&m->ntof, name, len, &val)) {
return NULL;
}
return upb_trygetfield(upb_value_getptr(val));
}
const upb_oneofdef *upb_msgdef_ntoo(const upb_msgdef *m, const char *name,
size_t len) {
upb_value val;
if (!upb_strtable_lookup2(&m->ntof, name, len, &val)) {
return NULL;
}
return upb_trygetoneof(upb_value_getptr(val));
}
bool upb_msgdef_lookupname(const upb_msgdef *m, const char *name, size_t len,
const upb_fielddef **f, const upb_oneofdef **o) {
upb_value val;
if (!upb_strtable_lookup2(&m->ntof, name, len, &val)) {
return false;
}
*o = upb_trygetoneof(upb_value_getptr(val));
*f = upb_trygetfield(upb_value_getptr(val));
UPB_ASSERT((*o != NULL) ^ (*f != NULL)); /* Exactly one of the two should be set. */
return true;
}
int upb_msgdef_numfields(const upb_msgdef *m) {
/* The number table contains only fields. */
return upb_inttable_count(&m->itof);
}
int upb_msgdef_numoneofs(const upb_msgdef *m) {
/* The name table includes oneofs, and the number table does not. */
return upb_strtable_count(&m->ntof) - upb_inttable_count(&m->itof);
}
bool upb_msgdef_mapentry(const upb_msgdef *m) {
return m->map_entry;
}
upb_wellknowntype_t upb_msgdef_wellknowntype(const upb_msgdef *m) {
return m->well_known_type;
}
bool upb_msgdef_isnumberwrapper(const upb_msgdef *m) {
upb_wellknowntype_t type = upb_msgdef_wellknowntype(m);
return type >= UPB_WELLKNOWN_DOUBLEVALUE &&
type <= UPB_WELLKNOWN_UINT32VALUE;
}
void upb_msg_field_begin(upb_msg_field_iter *iter, const upb_msgdef *m) {
upb_inttable_begin(iter, &m->itof);
}
void upb_msg_field_next(upb_msg_field_iter *iter) { upb_inttable_next(iter); }
bool upb_msg_field_done(const upb_msg_field_iter *iter) {
return upb_inttable_done(iter);
}
upb_fielddef *upb_msg_iter_field(const upb_msg_field_iter *iter) {
return (upb_fielddef*)upb_value_getptr(upb_inttable_iter_value(iter));
}
void upb_msg_field_iter_setdone(upb_msg_field_iter *iter) {
upb_inttable_iter_setdone(iter);
}
void upb_msg_oneof_begin(upb_msg_oneof_iter *iter, const upb_msgdef *m) {
upb_strtable_begin(iter, &m->ntof);
/* We need to skip past any initial fields. */
while (!upb_strtable_done(iter) &&
!upb_isoneof(upb_value_getptr(upb_strtable_iter_value(iter)))) {
upb_strtable_next(iter);
}
}
void upb_msg_oneof_next(upb_msg_oneof_iter *iter) {
/* We need to skip past fields to return only oneofs. */
do {
upb_strtable_next(iter);
} while (!upb_strtable_done(iter) &&
!upb_isoneof(upb_value_getptr(upb_strtable_iter_value(iter))));
}
bool upb_msg_oneof_done(const upb_msg_oneof_iter *iter) {
return upb_strtable_done(iter);
}
upb_oneofdef *upb_msg_iter_oneof(const upb_msg_oneof_iter *iter) {
return (upb_oneofdef*)upb_value_getptr(upb_strtable_iter_value(iter));
}
void upb_msg_oneof_iter_setdone(upb_msg_oneof_iter *iter) {
upb_strtable_iter_setdone(iter);
}
/* upb_oneofdef ***************************************************************/
const char *upb_oneofdef_name(const upb_oneofdef *o) {
return shortdefname(o->full_name);
}
const upb_msgdef *upb_oneofdef_containingtype(const upb_oneofdef *o) {
return o->parent;
}
int upb_oneofdef_numfields(const upb_oneofdef *o) {
return upb_strtable_count(&o->ntof);
}
uint32_t upb_oneofdef_index(const upb_oneofdef *o) {
return o->index;
}
const upb_fielddef *upb_oneofdef_ntof(const upb_oneofdef *o,
const char *name, size_t length) {
upb_value val;
return upb_strtable_lookup2(&o->ntof, name, length, &val) ?
upb_value_getptr(val) : NULL;
}
const upb_fielddef *upb_oneofdef_itof(const upb_oneofdef *o, uint32_t num) {
upb_value val;
return upb_inttable_lookup32(&o->itof, num, &val) ?
upb_value_getptr(val) : NULL;
}
void upb_oneof_begin(upb_oneof_iter *iter, const upb_oneofdef *o) {
upb_inttable_begin(iter, &o->itof);
}
void upb_oneof_next(upb_oneof_iter *iter) {
upb_inttable_next(iter);
}
bool upb_oneof_done(upb_oneof_iter *iter) {
return upb_inttable_done(iter);
}
upb_fielddef *upb_oneof_iter_field(const upb_oneof_iter *iter) {
return (upb_fielddef*)upb_value_getptr(upb_inttable_iter_value(iter));
}
void upb_oneof_iter_setdone(upb_oneof_iter *iter) {
upb_inttable_iter_setdone(iter);
}
/* upb_filedef ****************************************************************/
const char *upb_filedef_name(const upb_filedef *f) {
return f->name;
}
const char *upb_filedef_package(const upb_filedef *f) {
return f->package;
}
const char *upb_filedef_phpprefix(const upb_filedef *f) {
return f->phpprefix;
}
const char *upb_filedef_phpnamespace(const upb_filedef *f) {
return f->phpnamespace;
}
upb_syntax_t upb_filedef_syntax(const upb_filedef *f) {
return f->syntax;
}
int upb_filedef_msgcount(const upb_filedef *f) {
return f->msg_count;
}
int upb_filedef_depcount(const upb_filedef *f) {
return f->dep_count;
}
int upb_filedef_enumcount(const upb_filedef *f) {
return f->enum_count;
}
const upb_filedef *upb_filedef_dep(const upb_filedef *f, int i) {
return i < 0 || i >= f->dep_count ? NULL : f->deps[i];
}
const upb_msgdef *upb_filedef_msg(const upb_filedef *f, int i) {
return i < 0 || i >= f->msg_count ? NULL : &f->msgs[i];
}
const upb_enumdef *upb_filedef_enum(const upb_filedef *f, int i) {
return i < 0 || i >= f->enum_count ? NULL : &f->enums[i];
}
void upb_symtab_free(upb_symtab *s) {
upb_arena_uninit(&s->arena);
upb_gfree(s);
}
upb_symtab *upb_symtab_new() {
upb_symtab *s = upb_gmalloc(sizeof(*s));
upb_alloc *alloc;
if (!s) {
return NULL;
}
upb_arena_init(&s->arena);
alloc = upb_arena_alloc(&s->arena);
if (!upb_strtable_init2(&s->syms, UPB_CTYPE_CONSTPTR, alloc) ||
!upb_strtable_init2(&s->files, UPB_CTYPE_CONSTPTR, alloc)) {
upb_arena_uninit(&s->arena);
upb_gfree(s);
s = NULL;
}
return s;
}
const upb_msgdef *upb_symtab_lookupmsg(const upb_symtab *s, const char *sym) {
upb_value v;
return upb_strtable_lookup(&s->syms, sym, &v) ?
unpack_def(v, UPB_DEFTYPE_MSG) : NULL;
}
const upb_msgdef *upb_symtab_lookupmsg2(const upb_symtab *s, const char *sym,
size_t len) {
upb_value v;
return upb_strtable_lookup2(&s->syms, sym, len, &v) ?
unpack_def(v, UPB_DEFTYPE_MSG) : NULL;
}
const upb_enumdef *upb_symtab_lookupenum(const upb_symtab *s, const char *sym) {
upb_value v;
return upb_strtable_lookup(&s->syms, sym, &v) ?
unpack_def(v, UPB_DEFTYPE_ENUM) : NULL;
}
/* Code to build defs from descriptor protos. *********************************/
/* There is a question of how much validation to do here. It will be difficult
* to perfectly match the amount of validation performed by proto2. But since
* this code is used to directly build defs from Ruby (for example) we do need
* to validate important constraints like uniqueness of names and numbers. */
#define CHK(x) if (!(x)) return false
#define CHK_OOM(x) if (!(x)) { upb_upberr_setoom(ctx->status); return false; }
typedef struct {
const upb_symtab *symtab;
upb_filedef *file; /* File we are building. */
upb_alloc *alloc; /* Allocate defs here. */
upb_alloc *tmp; /* Alloc for addtab and any other tmp data. */
upb_strtable *addtab; /* full_name -> packed def ptr for new defs. */
upb_status *status; /* Record errors here. */
} symtab_addctx;
static const char *makefullname(const char *prefix, upb_stringview name) {
return NULL;
}
static bool symtab_add(const symtab_addctx *ctx, const char *name,
upb_value v) {
upb_value tmp;
if (upb_strtable_lookup(ctx->addtab, name, &tmp) ||
upb_strtable_lookup(&ctx->symtab->syms, name, &tmp)) {
upb_status_seterrf(ctx->status, "duplicate symbol '%s'", name);
return false;
}
CHK_OOM(upb_strtable_insert3(ctx->addtab, name, strlen(name), v, ctx->tmp));
return true;
}
/* Given a symbol and the base symbol inside which it is defined, find the
* symbol's definition in t. */
static bool resolvename(const upb_strtable *t, const upb_fielddef *f,
const char *base, upb_stringview sym,
upb_deftype_t type, upb_status *status,
const void **def) {
if(sym.size == 0) return NULL;
if(sym.data[0] == '.') {
/* Symbols starting with '.' are absolute, so we do a single lookup.
* Slice to omit the leading '.' */
upb_value v;
if (!upb_strtable_lookup2(t, sym.data + 1, sym.size - 1, &v)) {
return false;
}
*def = unpack_def(v, type);
if (!*def) {
upb_status_seterrf(status,
"type mismatch when resolving field %s, name %s",
f->full_name, sym.data);
return false;
}
return true;
} else {
/* Remove components from base until we find an entry or run out.
* TODO: This branch is totally broken, but currently not used. */
(void)base;
UPB_ASSERT(false);
return false;
}
}
const void *symtab_resolve(const symtab_addctx *ctx, const upb_fielddef *f,
const char *base, upb_stringview sym,
upb_deftype_t type) {
const void *ret;
if (!resolvename(ctx->addtab, f, base, sym, type, ctx->status, &ret) &&
!resolvename(&ctx->symtab->syms, f, base, sym, type, ctx->status, &ret)) {
if (upb_ok(ctx->status)) {
upb_status_seterrf(ctx->status, "couldn't resolve name '%s'", sym.data);
}
return false;
}
return ret;
}
static bool create_oneofdef(
const symtab_addctx *ctx, upb_msgdef *m,
const google_protobuf_OneofDescriptorProto *oneof_proto) {
upb_oneofdef *o;
upb_stringview name = google_protobuf_OneofDescriptorProto_name(oneof_proto);
o = (upb_oneofdef*)&m->oneofs[m->oneof_count++];
o->parent = m;
o->full_name = makefullname(m->full_name, name);
CHK_OOM(symtab_add(ctx, o->full_name, pack_def(o, UPB_DEFTYPE_ONEOF)));
CHK_OOM(upb_strtable_insert3(&m->ntof, name.data, name.size, upb_value_ptr(o),
ctx->alloc));
CHK_OOM(upb_inttable_init2(&o->itof, UPB_CTYPE_PTR, ctx->alloc));
CHK_OOM(upb_strtable_init2(&o->ntof, UPB_CTYPE_PTR, ctx->alloc));
return true;
}
static bool parse_default(const symtab_addctx *ctx, const char *str, size_t len,
upb_fielddef *f) {
char *end;
switch (upb_fielddef_type(f)) {
case UPB_TYPE_INT32: {
long val = strtol(str, &end, 0);
CHK(val <= INT32_MAX && val >= INT32_MIN && errno != ERANGE && !*end);
f->defaultval.sint = val;
break;
}
case UPB_TYPE_ENUM:
case UPB_TYPE_INT64: {
/* XXX: Need to write our own strtoll, since it's not available in c89. */
long long val = strtol(str, &end, 0);
CHK(val <= INT64_MAX && val >= INT64_MIN && errno != ERANGE && !*end);
f->defaultval.sint = val;
break;
}
case UPB_TYPE_UINT32: {
unsigned long val = strtoul(str, &end, 0);
CHK(val <= UINT32_MAX && errno != ERANGE && !*end);
f->defaultval.uint = val;
break;
}
case UPB_TYPE_UINT64: {
/* XXX: Need to write our own strtoull, since it's not available in c89. */
unsigned long long val = strtoul(str, &end, 0);
CHK(val <= UINT64_MAX && errno != ERANGE && !*end);
f->defaultval.uint = val;
break;
}
case UPB_TYPE_DOUBLE: {
double val = strtod(str, &end);
CHK(errno != ERANGE && !*end);
f->defaultval.dbl = val;
break;
}
case UPB_TYPE_FLOAT: {
/* XXX: Need to write our own strtof, since it's not available in c89. */
float val = strtod(str, &end);
CHK(errno != ERANGE && !*end);
f->defaultval.dbl = val;
break;
}
case UPB_TYPE_BOOL: {
if (strcmp(str, "false") == 0) {
f->defaultval.boolean = false;
} else if (strcmp(str, "true") == 0) {
f->defaultval.boolean = true;
} else {
return false;
}
}
case UPB_TYPE_STRING:
f->defaultval.str = newstr(ctx->alloc, str, len);
break;
case UPB_TYPE_BYTES:
/* XXX: need to interpret the C-escaped value. */
f->defaultval.str = newstr(ctx->alloc, str, len);
case UPB_TYPE_MESSAGE:
/* Should not have a default value. */
return false;
}
return true;
}
static bool create_fielddef(
const symtab_addctx *ctx, const char *prefix, upb_msgdef *m,
const google_protobuf_FieldDescriptorProto *field_proto) {
upb_alloc *alloc = ctx->alloc;
upb_fielddef *f;
const google_protobuf_FieldOptions *options;
upb_stringview defaultval, name;
upb_value packed_v = pack_def(f, UPB_DEFTYPE_FIELD);
upb_value v = upb_value_constptr(f);
const char *full_name;
const char *shortname;
int oneof_index;
name = google_protobuf_FieldDescriptorProto_name(field_proto);
CHK(upb_isident(name, false, ctx->status));
full_name = makefullname(prefix, name);
shortname = shortdefname(full_name);
if (m) {
/* direct message field. */
f = (upb_fielddef*)&m->fields[m->field_count++];
f->msgdef = m;
f->is_extension_ = false;
if (!upb_strtable_insert3(&m->ntof, name.data, name.size, packed_v, alloc)) {
upb_status_seterrf(ctx->status, "duplicate field name (%s)", shortname);
return false;
}
if (!upb_inttable_insert2(&m->itof, f->number_, v, alloc)) {
upb_status_seterrf(ctx->status, "duplicate field number (%u)", f->number_);
return false;
}
} else {
/* extension field. */
f = (upb_fielddef*)&ctx->file->exts[ctx->file->ext_count];
f->is_extension_ = true;
CHK_OOM(symtab_add(ctx, full_name, pack_def(f, UPB_DEFTYPE_FIELD)));
}
f->full_name = full_name;
f->file = ctx->file;
f->type_ = (int)google_protobuf_FieldDescriptorProto_type(field_proto);
f->label_ = (int)google_protobuf_FieldDescriptorProto_label(field_proto);
f->number_ = google_protobuf_FieldDescriptorProto_number(field_proto);
f->oneof = NULL;
/* TODO(haberman): use hazzers. */
if (name.size == 0 || f->number_ == 0) {
upb_status_seterrmsg(ctx->status, "field name or number were not set");
return false;
}
/* We can't resolve the subdef or (in the case of extensions) the containing
* message yet, because it may not have been defined yet. We stash a pointer
* to the field_proto until later when we can properly resolve it. */
f->sub.unresolved = field_proto;
if (m) {
/* XXX: need hazzers. */
oneof_index = google_protobuf_FieldDescriptorProto_oneof_index(field_proto);
if (oneof_index) {
if (upb_fielddef_label(f) != UPB_LABEL_OPTIONAL) {
upb_status_seterrf(ctx->status,
"fields in oneof must have OPTIONAL label (%s)",
f->full_name);
return false;
}
if (oneof_index >= m->oneof_count) {
upb_status_seterrf(ctx->status, "oneof_index out of range (%s)",
f->full_name);
return false;
}
f->oneof = &m->oneofs[oneof_index];
} else {
f->oneof = NULL;
}
}
if (f->number_ == 0 || f->number_ > UPB_MAX_FIELDNUMBER) {
upb_status_seterrf(ctx->status, "invalid field number (%u)", f->number_);
return false;
}
defaultval = google_protobuf_FieldDescriptorProto_default_value(field_proto);
if (defaultval.data) {
CHK(parse_default(ctx, defaultval.data, defaultval.size, f));
}
options = google_protobuf_FieldDescriptorProto_options(field_proto);
if (options) {
f->lazy_ = google_protobuf_FieldOptions_lazy(options);
f->packed_ = google_protobuf_FieldOptions_packed(options);
}
return true;
}
static bool create_enumdef(
const symtab_addctx *ctx, const char *prefix,
const google_protobuf_EnumDescriptorProto *enum_proto) {
upb_enumdef *e;
const google_protobuf_EnumValueDescriptorProto *const *values;
upb_stringview name;
size_t i, n;
name = google_protobuf_EnumDescriptorProto_name(enum_proto);
CHK(upb_isident(name, false, ctx->status));
e = (upb_enumdef*)&ctx->file->enums[ctx->file->enum_count++];
e->full_name = makefullname(prefix, name);
CHK_OOM(symtab_add(ctx, e->full_name, pack_def(e, UPB_DEFTYPE_ENUM)));
CHK_OOM(upb_strtable_init2(&e->ntoi, UPB_CTYPE_INT32, ctx->alloc));
CHK_OOM(upb_inttable_init2(&e->iton, UPB_CTYPE_CSTR, ctx->alloc));
e->defaultval = 0;
values = google_protobuf_EnumDescriptorProto_value(enum_proto, &n);
for (i = 0; i < n; i++) {
const google_protobuf_EnumValueDescriptorProto *value = values[i];
upb_stringview name = google_protobuf_EnumValueDescriptorProto_name(value);
char *name2 = upb_strdup2(name.data, name.size, ctx->alloc);
int32_t num = google_protobuf_EnumValueDescriptorProto_number(value);
upb_value v = upb_value_int32(num);
if (upb_strtable_lookup(&e->ntoi, name2, NULL)) {
upb_status_seterrf(ctx->status, "duplicate enum label '%s'", name2);
return false;
}
CHK_OOM(name2 && upb_strtable_insert(&e->ntoi, name2, v));
if (!upb_inttable_lookup(&e->iton, num, NULL)) {
CHK_OOM(upb_inttable_insert(&e->iton, num, upb_value_cstr(name2)));
}
}
return true;
}
static bool create_msgdef(const symtab_addctx *ctx, const char *prefix,
const google_protobuf_DescriptorProto *msg_proto) {
upb_msgdef *m;
const google_protobuf_MessageOptions *options;
const google_protobuf_OneofDescriptorProto *const *oneofs;
const google_protobuf_FieldDescriptorProto *const *fields;
const google_protobuf_EnumDescriptorProto *const *enums;
const google_protobuf_DescriptorProto *const *msgs;
size_t i, n;
upb_stringview name;
name = google_protobuf_DescriptorProto_name(msg_proto);
CHK(upb_isident(name, false, ctx->status));
m = (upb_msgdef*)&ctx->file->msgs[ctx->file->msg_count++];
m->full_name = makefullname(prefix, name);
CHK_OOM(symtab_add(ctx, m->full_name, pack_def(m, UPB_DEFTYPE_MSG)));
CHK_OOM(upb_inttable_init2(&m->itof, UPB_CTYPE_PTR, ctx->alloc));
CHK_OOM(upb_strtable_init2(&m->ntof, UPB_CTYPE_PTR, ctx->alloc));
m->file = ctx->file;
m->map_entry = false;
options = google_protobuf_DescriptorProto_options(msg_proto);
if (options) {
m->map_entry = google_protobuf_MessageOptions_map_entry(options);
}
oneofs = google_protobuf_DescriptorProto_oneof_decl(msg_proto, &n);
m->oneof_count = 0;
m->oneofs = upb_malloc(ctx->alloc, sizeof(*m->oneofs) * n);
for (i = 0; i < n; i++) {
CHK(create_oneofdef(ctx, m, oneofs[i]));
}
fields = google_protobuf_DescriptorProto_field(msg_proto, &n);
for (i = 0; i < n; i++) {
CHK(create_fielddef(ctx, m->full_name, m, fields[i]));
}
CHK(assign_msg_indices(m, ctx->status));
assign_msg_wellknowntype(m);
/* This message is built. Now build nested messages and enums. */
enums = google_protobuf_DescriptorProto_enum_type(msg_proto, &n);
for (i = 0; i < n; i++) {
CHK(create_enumdef(ctx, m->full_name, enums[i]));
}
msgs = google_protobuf_DescriptorProto_nested_type(msg_proto, &n);
for (i = 0; i < n; i++) {
CHK(create_msgdef(ctx, m->full_name, msgs[i]));
}
return true;
}
static char* strviewdup(const symtab_addctx *ctx, upb_stringview view) {
if (view.size == 0) {
return NULL;
}
return upb_strdup2(view.data, view.size, ctx->alloc);
}
typedef struct {
int msg_count;
int enum_count;
int ext_count;
} decl_counts;
static void count_types_in_msg(const google_protobuf_DescriptorProto *msg_proto,
decl_counts *counts) {
const google_protobuf_DescriptorProto *const *msgs;
size_t i, n;
msgs = google_protobuf_DescriptorProto_nested_type(msg_proto, &n);
for (i = 0; i < n; i++) {
count_types_in_msg(msgs[i], counts);
}
google_protobuf_DescriptorProto_enum_type(msg_proto, &n);
counts->enum_count += n;
google_protobuf_DescriptorProto_extension(msg_proto, &n);
counts->ext_count += n;
}
static void count_types_in_file(
const google_protobuf_FileDescriptorProto *file_proto,
decl_counts *counts) {
const google_protobuf_DescriptorProto *const *msgs;
size_t i, n;
msgs = google_protobuf_FileDescriptorProto_message_type(file_proto, &n);
for (i = 0; i < n; i++) {
count_types_in_msg(msgs[i], counts);
}
google_protobuf_FileDescriptorProto_enum_type(file_proto, &n);
counts->enum_count += n;
google_protobuf_FileDescriptorProto_extension(file_proto, &n);
counts->ext_count += n;
}
static bool resolve_fielddef(const symtab_addctx *ctx, const char *prefix,
upb_fielddef *f) {
upb_stringview name;
if (f->is_extension_) {
name = google_protobuf_FieldDescriptorProto_extendee(f->sub.unresolved);
f->msgdef = symtab_resolve(ctx, f, prefix, name, UPB_DEFTYPE_MSG);
CHK(f->msgdef);
}
name = google_protobuf_FieldDescriptorProto_type_name(f->sub.unresolved);
if (upb_fielddef_issubmsg(f)) {
f->sub.msgdef = symtab_resolve(ctx, f, prefix, name, UPB_DEFTYPE_MSG);
CHK(f->sub.msgdef);
} else if (f->type_ == UPB_DESCRIPTOR_TYPE_ENUM) {
f->sub.enumdef = symtab_resolve(ctx, f, prefix, name, UPB_DEFTYPE_ENUM);
CHK(f->sub.enumdef);
if (!upb_enumdef_iton(f->sub.enumdef, f->defaultval.sint)) {
upb_status_seterrf(ctx->status,
"enum field %s has default (%d) not in the enum",
f->full_name, f->defaultval.sint);
return false;
}
}
return true;
}
static bool build_filedef(
const symtab_addctx *ctx, upb_filedef *file,
const google_protobuf_FileDescriptorProto *file_proto) {
upb_alloc *alloc = ctx->alloc;
const google_protobuf_FileOptions *file_options_proto;
const google_protobuf_DescriptorProto *const *msgs;
const google_protobuf_EnumDescriptorProto *const *enums;
const google_protobuf_FieldDescriptorProto *const *exts;
const upb_stringview* strs;
size_t i, n;
decl_counts counts;
upb_stringview syntax, package;
count_types_in_file(file_proto, &counts);
file->msgs = upb_malloc(alloc, sizeof(*file->msgs) * counts.msg_count);
file->enums = upb_malloc(alloc, sizeof(*file->enums) * counts.enum_count);
file->exts = upb_malloc(alloc, sizeof(*file->exts) * counts.ext_count);
/* We increment these as defs are added. */
file->msg_count = 0;
file->enum_count = 0;
file->ext_count = 0;
package = google_protobuf_FileDescriptorProto_package(file_proto);
CHK(upb_isident(package, true, ctx->status));
file->name =
strviewdup(ctx, google_protobuf_FileDescriptorProto_name(file_proto));
file->package = strviewdup(ctx, package);
file->phpprefix = NULL;
file->phpnamespace = NULL;
syntax = google_protobuf_FileDescriptorProto_syntax(file_proto);
if (upb_stringview_eql(syntax, upb_stringview_makez("proto2"))) {
file->syntax = UPB_SYNTAX_PROTO2;
} else if (upb_stringview_eql(syntax, upb_stringview_makez("proto3"))) {
file->syntax = UPB_SYNTAX_PROTO3;
} else {
upb_status_seterrf(ctx->status, "Invalid syntax '%s'", syntax);
return false;
}
/* Read options. */
file_options_proto = google_protobuf_FileDescriptorProto_options(file_proto);
if (file_options_proto) {
file->phpprefix = strviewdup(
ctx, google_protobuf_FileOptions_php_class_prefix(file_options_proto));
file->phpnamespace = strviewdup(
ctx, google_protobuf_FileOptions_php_namespace(file_options_proto));
}
/* Verify dependencies. */
strs = google_protobuf_FileDescriptorProto_dependency(file_proto, &n);
file->deps = upb_malloc(alloc, sizeof(*file->deps) * n) ;
CHK_OOM(file->deps);
for (i = 0; i < n; i++) {
upb_stringview dep_name = strs[i];
upb_value v;
if (!upb_strtable_lookup2(&ctx->symtab->files, dep_name.data,
dep_name.size, &v)) {
upb_status_seterrf(ctx->status,
"Depends on file '%s', but it has not been loaded",
dep_name.data);
return false;
}
file->deps[i] = upb_value_getconstptr(v);
}
/* Create messages. */
msgs = google_protobuf_FileDescriptorProto_message_type(file_proto, &n);
for (i = 0; i < n; i++) {
CHK(create_msgdef(ctx, file->package, msgs[i]));
}
/* Create enums. */
enums = google_protobuf_FileDescriptorProto_enum_type(file_proto, &n);
for (i = 0; i < n; i++) {
CHK(create_enumdef(ctx, file->package, enums[i]));
}
/* Create extensions. */
exts = google_protobuf_FileDescriptorProto_extension(file_proto, &n);
file->exts = upb_malloc(alloc, sizeof(*file->exts) * n);
CHK_OOM(file->exts);
for (i = 0; i < n; i++) {
CHK(create_fielddef(ctx, file->package, NULL, exts[i]));
}
/* Now that all names are in the table, resolve references. */
for (i = 0; i < file->ext_count; i++) {
CHK(resolve_fielddef(ctx, file->package, (upb_fielddef*)&file->exts[i]));
}
for (i = 0; i < file->msg_count; i++) {
const upb_msgdef *m = &file->msgs[i];
int j;
for (j = 0; i < m->field_count; i++) {
CHK(resolve_fielddef(ctx, m->full_name, (upb_fielddef*)&m->fields[j]));
}
}
return true;
}
static bool upb_symtab_addtotabs(upb_symtab *s, symtab_addctx *ctx,
upb_status *status) {
const upb_filedef *file = ctx->file;
upb_alloc *alloc = upb_arena_alloc(&s->arena);
upb_strtable_iter iter;
CHK_OOM(upb_strtable_insert3(&s->files, file->name, strlen(file->name),
upb_value_constptr(file), alloc));
upb_strtable_begin(&iter, ctx->addtab);
for (; !upb_strtable_done(&iter); upb_strtable_next(&iter)) {
const char *key = upb_strtable_iter_key(&iter);
size_t keylen = upb_strtable_iter_keylength(&iter);
upb_value value = upb_strtable_iter_value(&iter);
CHK_OOM(upb_strtable_insert3(&s->syms, key, keylen, value, alloc));
}
return true;
}
bool upb_symtab_addfile(upb_symtab *s,
const google_protobuf_FileDescriptorProto *file_proto,
upb_status *status) {
upb_arena tmparena;
upb_strtable addtab;
symtab_addctx ctx;
upb_alloc *alloc = upb_arena_alloc(&s->arena);
upb_filedef *file = upb_malloc(alloc, sizeof(*file));
bool ok;
ctx.file = file;
ctx.alloc = alloc;
ctx.tmp = upb_arena_alloc(&tmparena);
ctx.addtab = &addtab;
ctx.status = status;
upb_arena_init(&tmparena);
ok = file &&
upb_strtable_init2(&addtab, UPB_CTYPE_PTR, ctx.tmp) &&
build_filedef(&ctx, file, file_proto) &&
upb_symtab_addtotabs(s, &ctx, status);
upb_arena_uninit(&tmparena);
return ok;
}
#undef CHK
#undef CHK_OOM