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def.c
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def.c
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#include "upb/def.h"
#include <ctype.h>
#include <stdlib.h>
#include <string.h>
#include "upb/structdefs.int.h"
#include "upb/handlers.h"
typedef struct {
size_t len;
char str[1]; /* Null-terminated string data follows. */
} str_t;
static str_t *newstr(const char *data, size_t len) {
str_t *ret = upb_gmalloc(sizeof(*ret) + len);
if (!ret) return NULL;
ret->len = len;
memcpy(ret->str, data, len);
ret->str[len] = '\0';
return ret;
}
static void freestr(str_t *s) { upb_gfree(s); }
/* 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(const char *str, size_t len, bool full, upb_status *s) {
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 bool upb_isoneof(const upb_refcounted *def) {
return def->vtbl == &upb_oneofdef_vtbl;
}
static bool upb_isfield(const upb_refcounted *def) {
return def->vtbl == &upb_fielddef_vtbl;
}
static const upb_oneofdef *upb_trygetoneof(const upb_refcounted *def) {
return upb_isoneof(def) ? (const upb_oneofdef*)def : NULL;
}
static const upb_fielddef *upb_trygetfield(const upb_refcounted *def) {
return upb_isfield(def) ? (const upb_fielddef*)def : NULL;
}
/* upb_def ********************************************************************/
upb_deftype_t upb_def_type(const upb_def *d) { return d->type; }
const char *upb_def_fullname(const upb_def *d) { return d->fullname; }
const char *upb_def_name(const upb_def *d) {
const char *p;
if (d->fullname == NULL) {
return NULL;
} else if ((p = strrchr(d->fullname, '.')) == NULL) {
/* No '.' in the name, return the full string. */
return d->fullname;
} else {
/* Return one past the last '.'. */
return p + 1;
}
}
bool upb_def_setfullname(upb_def *def, const char *fullname, upb_status *s) {
UPB_ASSERT(!upb_def_isfrozen(def));
if (!upb_isident(fullname, strlen(fullname), true, s)) {
return false;
}
fullname = upb_gstrdup(fullname);
if (!fullname) {
upb_upberr_setoom(s);
return false;
}
upb_gfree((void*)def->fullname);
def->fullname = fullname;
return true;
}
const upb_filedef *upb_def_file(const upb_def *d) { return d->file; }
static bool upb_def_init(upb_def *def, upb_deftype_t type,
const struct upb_refcounted_vtbl *vtbl,
const void *owner) {
if (!upb_refcounted_init(upb_def_upcast_mutable(def), vtbl, owner)) return false;
def->type = type;
def->fullname = NULL;
def->came_from_user = false;
def->file = NULL;
return true;
}
static void upb_def_uninit(upb_def *def) {
upb_gfree((void*)def->fullname);
}
static const char *msgdef_name(const upb_msgdef *m) {
const char *name = upb_def_fullname(upb_msgdef_upcast(m));
return name ? name : "(anonymous)";
}
static bool upb_validate_field(upb_fielddef *f, upb_status *s) {
if (upb_fielddef_name(f) == NULL || upb_fielddef_number(f) == 0) {
upb_status_seterrmsg(s, "fielddef must have name and number set");
return false;
}
if (!f->type_is_set_) {
upb_status_seterrmsg(s, "fielddef type was not initialized");
return false;
}
if (upb_fielddef_lazy(f) &&
upb_fielddef_descriptortype(f) != UPB_DESCRIPTOR_TYPE_MESSAGE) {
upb_status_seterrmsg(s,
"only length-delimited submessage fields may be lazy");
return false;
}
if (upb_fielddef_hassubdef(f)) {
const upb_def *subdef;
if (f->subdef_is_symbolic) {
upb_status_seterrf(s, "field '%s.%s' has not been resolved",
msgdef_name(f->msg.def), upb_fielddef_name(f));
return false;
}
subdef = upb_fielddef_subdef(f);
if (subdef == NULL) {
upb_status_seterrf(s, "field %s.%s is missing required subdef",
msgdef_name(f->msg.def), upb_fielddef_name(f));
return false;
}
if (!upb_def_isfrozen(subdef) && !subdef->came_from_user) {
upb_status_seterrf(s,
"subdef of field %s.%s is not frozen or being frozen",
msgdef_name(f->msg.def), upb_fielddef_name(f));
return false;
}
}
if (upb_fielddef_type(f) == UPB_TYPE_ENUM) {
bool has_default_name = upb_fielddef_enumhasdefaultstr(f);
bool has_default_number = upb_fielddef_enumhasdefaultint32(f);
/* Previously verified by upb_validate_enumdef(). */
UPB_ASSERT(upb_enumdef_numvals(upb_fielddef_enumsubdef(f)) > 0);
/* We've already validated that we have an associated enumdef and that it
* has at least one member, so at least one of these should be true.
* Because if the user didn't set anything, we'll pick up the enum's
* default, but if the user *did* set something we should at least pick up
* the one they set (int32 or string). */
UPB_ASSERT(has_default_name || has_default_number);
if (!has_default_name) {
upb_status_seterrf(s,
"enum default for field %s.%s (%d) is not in the enum",
msgdef_name(f->msg.def), upb_fielddef_name(f),
upb_fielddef_defaultint32(f));
return false;
}
if (!has_default_number) {
upb_status_seterrf(s,
"enum default for field %s.%s (%s) is not in the enum",
msgdef_name(f->msg.def), upb_fielddef_name(f),
upb_fielddef_defaultstr(f, NULL));
return false;
}
/* Lift the effective numeric default into the field's default slot, in case
* we were only getting it "by reference" from the enumdef. */
upb_fielddef_setdefaultint32(f, upb_fielddef_defaultint32(f));
}
/* Ensure that MapEntry submessages only appear as repeated fields, not
* optional/required (singular) fields. */
if (upb_fielddef_type(f) == UPB_TYPE_MESSAGE &&
upb_fielddef_msgsubdef(f) != NULL) {
const upb_msgdef *subdef = upb_fielddef_msgsubdef(f);
if (upb_msgdef_mapentry(subdef) && !upb_fielddef_isseq(f)) {
upb_status_seterrf(s,
"Field %s refers to mapentry message but is not "
"a repeated field",
upb_fielddef_name(f) ? upb_fielddef_name(f) :
"(unnamed)");
return false;
}
}
return true;
}
static bool upb_validate_enumdef(const upb_enumdef *e, upb_status *s) {
if (upb_enumdef_numvals(e) == 0) {
upb_status_seterrf(s, "enum %s has no members (must have at least one)",
upb_enumdef_fullname(e));
return false;
}
return true;
}
/* 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->msg.def == m);
if (!upb_validate_field(f, s)) {
upb_gfree(fields);
return false;
}
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;
}
}
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;
}
bool upb_def_freeze(upb_def *const* defs, size_t n, upb_status *s) {
/* Def graph contains FieldDefs between each MessageDef, so double the
* limit. */
const size_t maxdepth = UPB_MAX_MESSAGE_DEPTH * 2;
if (!_upb_def_validate(defs, n, s)) {
return false;
}
/* Validation all passed; freeze the objects. */
return upb_refcounted_freeze((upb_refcounted *const*)defs, n, s, maxdepth);
}
/* upb_enumdef ****************************************************************/
static void visitenum(const upb_refcounted *r, upb_refcounted_visit *visit,
void *closure) {
const upb_enumdef *e = (const upb_enumdef*)r;
const upb_def *def = upb_enumdef_upcast(e);
if (upb_def_file(def)) {
visit(r, upb_filedef_upcast(upb_def_file(def)), closure);
}
}
static void freeenum(upb_refcounted *r) {
upb_enumdef *e = (upb_enumdef*)r;
upb_inttable_iter i;
upb_inttable_begin(&i, &e->iton);
for( ; !upb_inttable_done(&i); upb_inttable_next(&i)) {
/* To clean up the upb_gstrdup() from upb_enumdef_addval(). */
upb_gfree(upb_value_getcstr(upb_inttable_iter_value(&i)));
}
upb_strtable_uninit(&e->ntoi);
upb_inttable_uninit(&e->iton);
upb_def_uninit(upb_enumdef_upcast_mutable(e));
upb_gfree(e);
}
const struct upb_refcounted_vtbl upb_enumdef_vtbl = {&visitenum, &freeenum};
upb_enumdef *upb_enumdef_new(const void *owner) {
upb_enumdef *e = upb_gmalloc(sizeof(*e));
if (!e) return NULL;
if (!upb_def_init(upb_enumdef_upcast_mutable(e), UPB_DEF_ENUM,
&upb_enumdef_vtbl, owner)) {
goto err2;
}
if (!upb_strtable_init(&e->ntoi, UPB_CTYPE_INT32)) goto err2;
if (!upb_inttable_init(&e->iton, UPB_CTYPE_CSTR)) goto err1;
return e;
err1:
upb_strtable_uninit(&e->ntoi);
err2:
upb_gfree(e);
return NULL;
}
bool upb_enumdef_freeze(upb_enumdef *e, upb_status *status) {
upb_def *d = upb_enumdef_upcast_mutable(e);
return upb_def_freeze(&d, 1, status);
}
const char *upb_enumdef_fullname(const upb_enumdef *e) {
return upb_def_fullname(upb_enumdef_upcast(e));
}
const char *upb_enumdef_name(const upb_enumdef *e) {
return upb_def_name(upb_enumdef_upcast(e));
}
bool upb_enumdef_setfullname(upb_enumdef *e, const char *fullname,
upb_status *s) {
return upb_def_setfullname(upb_enumdef_upcast_mutable(e), fullname, s);
}
bool upb_enumdef_addval(upb_enumdef *e, const char *name, int32_t num,
upb_status *status) {
char *name2;
if (!upb_isident(name, strlen(name), false, status)) {
return false;
}
if (upb_enumdef_ntoiz(e, name, NULL)) {
upb_status_seterrf(status, "name '%s' is already defined", name);
return false;
}
if (!upb_strtable_insert(&e->ntoi, name, upb_value_int32(num))) {
upb_status_seterrmsg(status, "out of memory");
return false;
}
if (!upb_inttable_lookup(&e->iton, num, NULL)) {
name2 = upb_gstrdup(name);
if (!name2 || !upb_inttable_insert(&e->iton, num, upb_value_cstr(name2))) {
upb_status_seterrmsg(status, "out of memory");
upb_strtable_remove(&e->ntoi, name, NULL);
return false;
}
}
if (upb_enumdef_numvals(e) == 1) {
bool ok = upb_enumdef_setdefault(e, num, NULL);
UPB_ASSERT(ok);
}
return true;
}
int32_t upb_enumdef_default(const upb_enumdef *e) {
UPB_ASSERT(upb_enumdef_iton(e, e->defaultval));
return e->defaultval;
}
bool upb_enumdef_setdefault(upb_enumdef *e, int32_t val, upb_status *s) {
UPB_ASSERT(!upb_enumdef_isfrozen(e));
if (!upb_enumdef_iton(e, val)) {
upb_status_seterrf(s, "number '%d' is not in the enum.", val);
return false;
}
e->defaultval = val;
return true;
}
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 ***************************************************************/
static void upb_fielddef_init_default(upb_fielddef *f);
static void upb_fielddef_uninit_default(upb_fielddef *f) {
if (f->type_is_set_ && f->default_is_string && f->defaultval.bytes)
freestr(f->defaultval.bytes);
}
const char *upb_fielddef_fullname(const upb_fielddef *e) {
return upb_def_fullname(upb_fielddef_upcast(e));
}
static void visitfield(const upb_refcounted *r, upb_refcounted_visit *visit,
void *closure) {
const upb_fielddef *f = (const upb_fielddef*)r;
const upb_def *def = upb_fielddef_upcast(f);
if (upb_fielddef_containingtype(f)) {
visit(r, upb_msgdef_upcast2(upb_fielddef_containingtype(f)), closure);
}
if (upb_fielddef_containingoneof(f)) {
visit(r, upb_oneofdef_upcast(upb_fielddef_containingoneof(f)), closure);
}
if (upb_fielddef_subdef(f)) {
visit(r, upb_def_upcast(upb_fielddef_subdef(f)), closure);
}
if (upb_def_file(def)) {
visit(r, upb_filedef_upcast(upb_def_file(def)), closure);
}
}
static void freefield(upb_refcounted *r) {
upb_fielddef *f = (upb_fielddef*)r;
upb_fielddef_uninit_default(f);
if (f->subdef_is_symbolic)
upb_gfree(f->sub.name);
upb_def_uninit(upb_fielddef_upcast_mutable(f));
upb_gfree(f);
}
static const char *enumdefaultstr(const upb_fielddef *f) {
const upb_enumdef *e;
UPB_ASSERT(f->type_is_set_ && f->type_ == UPB_TYPE_ENUM);
e = upb_fielddef_enumsubdef(f);
if (f->default_is_string && f->defaultval.bytes) {
/* Default was explicitly set as a string. */
str_t *s = f->defaultval.bytes;
return s->str;
} else if (e) {
if (!f->default_is_string) {
/* Default was explicitly set as an integer; look it up in enumdef. */
const char *name = upb_enumdef_iton(e, f->defaultval.sint);
if (name) {
return name;
}
} else {
/* Default is completely unset; pull enumdef default. */
if (upb_enumdef_numvals(e) > 0) {
const char *name = upb_enumdef_iton(e, upb_enumdef_default(e));
UPB_ASSERT(name);
return name;
}
}
}
return NULL;
}
static bool enumdefaultint32(const upb_fielddef *f, int32_t *val) {
const upb_enumdef *e;
UPB_ASSERT(f->type_is_set_ && f->type_ == UPB_TYPE_ENUM);
e = upb_fielddef_enumsubdef(f);
if (!f->default_is_string) {
/* Default was explicitly set as an integer. */
*val = f->defaultval.sint;
return true;
} else if (e) {
if (f->defaultval.bytes) {
/* Default was explicitly set as a str; try to lookup corresponding int. */
str_t *s = f->defaultval.bytes;
if (upb_enumdef_ntoiz(e, s->str, val)) {
return true;
}
} else {
/* Default is unset; try to pull in enumdef default. */
if (upb_enumdef_numvals(e) > 0) {
*val = upb_enumdef_default(e);
return true;
}
}
}
return false;
}
const struct upb_refcounted_vtbl upb_fielddef_vtbl = {visitfield, freefield};
upb_fielddef *upb_fielddef_new(const void *o) {
upb_fielddef *f = upb_gmalloc(sizeof(*f));
if (!f) return NULL;
if (!upb_def_init(upb_fielddef_upcast_mutable(f), UPB_DEF_FIELD,
&upb_fielddef_vtbl, o)) {
upb_gfree(f);
return NULL;
}
f->msg.def = NULL;
f->sub.def = NULL;
f->oneof = NULL;
f->subdef_is_symbolic = false;
f->msg_is_symbolic = false;
f->label_ = UPB_LABEL_OPTIONAL;
f->type_ = UPB_TYPE_INT32;
f->number_ = 0;
f->type_is_set_ = false;
f->tagdelim = false;
f->is_extension_ = false;
f->lazy_ = false;
f->packed_ = true;
/* For the moment we default this to UPB_INTFMT_VARIABLE, since it will work
* with all integer types and is in some since more "default" since the most
* normal-looking proto2 types int32/int64/uint32/uint64 use variable.
*
* Other options to consider:
* - there is no default; users must set this manually (like type).
* - default signed integers to UPB_INTFMT_ZIGZAG, since it's more likely to
* be an optimal default for signed integers. */
f->intfmt = UPB_INTFMT_VARIABLE;
return f;
}
bool upb_fielddef_typeisset(const upb_fielddef *f) {
return f->type_is_set_;
}
upb_fieldtype_t upb_fielddef_type(const upb_fielddef *f) {
UPB_ASSERT(f->type_is_set_);
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_;
}
upb_intfmt_t upb_fielddef_intfmt(const upb_fielddef *f) {
return f->intfmt;
}
bool upb_fielddef_istagdelim(const upb_fielddef *f) {
return f->tagdelim;
}
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 upb_def_fullname(upb_fielddef_upcast(f));
}
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->msg_is_symbolic ? NULL : f->msg.def;
}
const upb_oneofdef *upb_fielddef_containingoneof(const upb_fielddef *f) {
return f->oneof;
}
upb_msgdef *upb_fielddef_containingtype_mutable(upb_fielddef *f) {
return (upb_msgdef*)upb_fielddef_containingtype(f);
}
const char *upb_fielddef_containingtypename(upb_fielddef *f) {
return f->msg_is_symbolic ? f->msg.name : NULL;
}
static void release_containingtype(upb_fielddef *f) {
if (f->msg_is_symbolic) upb_gfree(f->msg.name);
}
bool upb_fielddef_setcontainingtypename(upb_fielddef *f, const char *name,
upb_status *s) {
char *name_copy;
UPB_ASSERT(!upb_fielddef_isfrozen(f));
if (upb_fielddef_containingtype(f)) {
upb_status_seterrmsg(s, "field has already been added to a message.");
return false;
}
/* TODO: validate name (upb_isident() doesn't quite work atm because this name
* may have a leading "."). */
name_copy = upb_gstrdup(name);
if (!name_copy) {
upb_upberr_setoom(s);
return false;
}
release_containingtype(f);
f->msg.name = name_copy;
f->msg_is_symbolic = true;
return true;
}
bool upb_fielddef_setname(upb_fielddef *f, const char *name, upb_status *s) {
if (upb_fielddef_containingtype(f) || upb_fielddef_containingoneof(f)) {
upb_status_seterrmsg(s, "Already added to message or oneof");
return false;
}
return upb_def_setfullname(upb_fielddef_upcast_mutable(f), name, s);
}
static void chkdefaulttype(const upb_fielddef *f, upb_fieldtype_t type) {
UPB_UNUSED(f);
UPB_UNUSED(type);
UPB_ASSERT(f->type_is_set_ && upb_fielddef_type(f) == type);
}
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) {
if (f->type_is_set_ && upb_fielddef_type(f) == UPB_TYPE_ENUM) {
int32_t val;
bool ok = enumdefaultint32(f, &val);
UPB_ASSERT(ok);
return val;
} else {
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) {
UPB_ASSERT(f->type_is_set_);
UPB_ASSERT(upb_fielddef_type(f) == UPB_TYPE_STRING ||
upb_fielddef_type(f) == UPB_TYPE_BYTES ||
upb_fielddef_type(f) == UPB_TYPE_ENUM);
if (upb_fielddef_type(f) == UPB_TYPE_ENUM) {
const char *ret = enumdefaultstr(f);
UPB_ASSERT(ret);
/* Enum defaults can't have embedded NULLs. */
if (len) *len = strlen(ret);
return ret;
}
if (f->default_is_string) {
str_t *str = f->defaultval.bytes;
if (len) *len = str->len;
return str->str;
}
return NULL;
}
static void upb_fielddef_init_default(upb_fielddef *f) {
f->default_is_string = false;
switch (upb_fielddef_type(f)) {
case UPB_TYPE_DOUBLE: f->defaultval.dbl = 0; break;
case UPB_TYPE_FLOAT: f->defaultval.flt = 0; break;
case UPB_TYPE_INT32:
case UPB_TYPE_INT64: f->defaultval.sint = 0; break;
case UPB_TYPE_UINT64:
case UPB_TYPE_UINT32:
case UPB_TYPE_BOOL: f->defaultval.uint = 0; break;
case UPB_TYPE_STRING:
case UPB_TYPE_BYTES:
f->defaultval.bytes = newstr("", 0);
f->default_is_string = true;
break;
case UPB_TYPE_MESSAGE: break;
case UPB_TYPE_ENUM:
/* This is our special sentinel that indicates "not set" for an enum. */
f->default_is_string = true;
f->defaultval.bytes = NULL;
break;
}
}
const upb_def *upb_fielddef_subdef(const upb_fielddef *f) {
return f->subdef_is_symbolic ? NULL : f->sub.def;
}
const upb_msgdef *upb_fielddef_msgsubdef(const upb_fielddef *f) {
const upb_def *def = upb_fielddef_subdef(f);
return def ? upb_dyncast_msgdef(def) : NULL;
}
const upb_enumdef *upb_fielddef_enumsubdef(const upb_fielddef *f) {
const upb_def *def = upb_fielddef_subdef(f);
return def ? upb_dyncast_enumdef(def) : NULL;