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|
/*
* upb - a minimalist implementation of protocol buffers.
*
* Copyright (c) 2008-2012 Google Inc. See LICENSE for details.
* Author: Josh Haberman <jhaberman@gmail.com>
*/
#include "upb/def.h"
#include <stdlib.h>
#include <string.h>
#include "upb/descriptor/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(const char *data, size_t len) {
str_t *ret = malloc(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) { free(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) {
bool start = true;
for (size_t i = 0; i < len; i++) {
char c = str[i];
if (c == '.') {
if (start || !full) return false;
start = true;
} else if (start) {
if (!upb_isletter(c)) return false;
start = false;
} else {
if (!upb_isalphanum(c)) return false;
}
}
return !start;
}
/* 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; }
bool upb_def_setfullname(upb_def *def, const char *fullname) {
assert(!upb_def_isfrozen(def));
if (!upb_isident(fullname, strlen(fullname), true)) return false;
free((void*)def->fullname);
def->fullname = upb_strdup(fullname);
return true;
}
upb_def *upb_def_dup(const upb_def *def, const void *o) {
switch (def->type) {
case UPB_DEF_MSG:
return upb_upcast(upb_msgdef_dup(upb_downcast_msgdef(def), o));
case UPB_DEF_FIELD:
return upb_upcast(upb_fielddef_dup(upb_downcast_fielddef(def), o));
case UPB_DEF_ENUM:
return upb_upcast(upb_enumdef_dup(upb_downcast_enumdef(def), o));
default: assert(false); return NULL;
}
}
bool upb_def_isfrozen(const upb_def *def) {
return upb_refcounted_isfrozen(upb_upcast(def));
}
void upb_def_ref(const upb_def *def, const void *owner) {
upb_refcounted_ref(upb_upcast(def), owner);
}
void upb_def_unref(const upb_def *def, const void *owner) {
upb_refcounted_unref(upb_upcast(def), owner);
}
void upb_def_donateref(const upb_def *def, const void *from, const void *to) {
upb_refcounted_donateref(upb_upcast(def), from, to);
}
void upb_def_checkref(const upb_def *def, const void *owner) {
upb_refcounted_checkref(upb_upcast(def), owner);
}
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_upcast(def), vtbl, owner)) return false;
def->type = type;
def->fullname = NULL;
def->came_from_user = false;
return true;
}
static void upb_def_uninit(upb_def *def) {
free((void*)def->fullname);
}
static const char *msgdef_name(const upb_msgdef *m) {
const char *name = upb_def_fullname(upb_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_seterrliteral(s, "fielddef must have name and number set");
return false;
}
if (!f->type_is_set_) {
upb_status_seterrliteral(s, "fielddef type was not initialized");
return false;
}
if (upb_fielddef_hassubdef(f)) {
if (f->subdef_is_symbolic) {
upb_status_seterrf(s,
"field '%s' has not been resolved", upb_fielddef_name(f));
return false;
}
const upb_def *subdef = upb_fielddef_subdef(f);
if (subdef == NULL) {
upb_status_seterrf(s,
"field %s.%s is missing required subdef",
msgdef_name(f->msgdef), upb_fielddef_name(f));
return false;
} else 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->msgdef), upb_fielddef_name(f));
return false;
} else if (upb_fielddef_default_is_symbolic(f)) {
upb_status_seterrf(s,
"enum field %s.%s has not been resolved",
msgdef_name(f->msgdef), upb_fielddef_name(f));
return false;
}
}
return true;
}
bool upb_def_freeze(upb_def *const* defs, int n, upb_status *s) {
// First perform validation, in two passes so we can check that we have a
// transitive closure without needing to search.
for (int 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_seterrliteral(s, "def is already frozen");
goto err;
} else if (def->type == UPB_DEF_FIELD) {
upb_status_seterrliteral(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;
}
}
for (int i = 0; i < n; i++) {
upb_msgdef *m = upb_dyncast_msgdef_mutable(defs[i]);
upb_enumdef *e = upb_dyncast_enumdef_mutable(defs[i]);
if (m) {
upb_inttable_compact(&m->itof);
upb_msg_iter j;
uint32_t selector = 0;
for(upb_msg_begin(&j, m); !upb_msg_done(&j); upb_msg_next(&j)) {
upb_fielddef *f = upb_msg_iter_field(&j);
assert(f->msgdef == m);
if (!upb_validate_field(f, s)) goto err;
f->selector_base = selector + upb_handlers_selectorbaseoffset(f);
selector += upb_handlers_selectorcount(f);
}
m->selector_count = selector;
} else if (e) {
upb_inttable_compact(&e->iton);
}
}
// Validation all passed; freeze the defs.
return upb_refcounted_freeze((upb_refcounted*const*)defs, n, s);
err:
for (int i = 0; i < n; i++) {
defs[i]->came_from_user = false;
}
assert(!upb_ok(s));
return false;
}
/* upb_enumdef ****************************************************************/
static void upb_enumdef_free(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_strdup() from upb_enumdef_addval().
free(upb_value_getcstr(upb_inttable_iter_value(&i)));
}
upb_strtable_uninit(&e->ntoi);
upb_inttable_uninit(&e->iton);
upb_def_uninit(upb_upcast(e));
free(e);
}
upb_enumdef *upb_enumdef_new(const void *owner) {
static const struct upb_refcounted_vtbl vtbl = {NULL, &upb_enumdef_free};
upb_enumdef *e = malloc(sizeof(*e));
if (!e) return NULL;
if (!upb_def_init(upb_upcast(e), UPB_DEF_ENUM, &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:
free(e);
return NULL;
}
upb_enumdef *upb_enumdef_dup(const upb_enumdef *e, const void *owner) {
upb_enumdef *new_e = upb_enumdef_new(owner);
if (!new_e) return NULL;
upb_enum_iter i;
for(upb_enum_begin(&i, e); !upb_enum_done(&i); upb_enum_next(&i)) {
bool success = upb_enumdef_addval(
new_e, upb_enum_iter_name(&i),upb_enum_iter_number(&i), NULL);
if (!success) {
upb_enumdef_unref(new_e, owner);
return NULL;
}
}
return new_e;
}
bool upb_enumdef_isfrozen(const upb_enumdef *e) {
return upb_def_isfrozen(upb_upcast(e));
}
void upb_enumdef_ref(const upb_enumdef *e, const void *owner) {
upb_def_ref(upb_upcast(e), owner);
}
void upb_enumdef_unref(const upb_enumdef *e, const void *owner) {
upb_def_unref(upb_upcast(e), owner);
}
void upb_enumdef_donateref(
const upb_enumdef *e, const void *from, const void *to) {
upb_def_donateref(upb_upcast(e), from, to);
}
void upb_enumdef_checkref(const upb_enumdef *e, const void *owner) {
upb_def_checkref(upb_upcast(e), owner);
}
const char *upb_enumdef_fullname(const upb_enumdef *e) {
return upb_def_fullname(upb_upcast(e));
}
bool upb_enumdef_setfullname(upb_enumdef *e, const char *fullname) {
return upb_def_setfullname(upb_upcast(e), fullname);
}
bool upb_enumdef_addval(upb_enumdef *e, const char *name, int32_t num,
upb_status *status) {
if (!upb_isident(name, strlen(name), false)) {
upb_status_seterrf(status, "name '%s' is not a valid identifier", name);
return false;
}
if (upb_enumdef_ntoi(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_seterrliteral(status, "out of memory");
return false;
}
if (!upb_inttable_lookup(&e->iton, num, NULL) &&
!upb_inttable_insert(&e->iton, num, upb_value_cstr(upb_strdup(name)))) {
upb_status_seterrliteral(status, "out of memory");
upb_strtable_remove(&e->ntoi, name, NULL);
return false;
}
return true;
}
int32_t upb_enumdef_default(const upb_enumdef *e) { return e->defaultval; }
void upb_enumdef_setdefault(upb_enumdef *e, int32_t val) {
assert(!upb_enumdef_isfrozen(e));
e->defaultval = val;
}
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, int32_t *num) {
upb_value v;
if (!upb_strtable_lookup(&def->ntoi, name, &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)
freestr(upb_value_getptr(f->defaultval));
}
static void visitfield(const upb_refcounted *r, upb_refcounted_visit *visit,
void *closure) {
const upb_fielddef *f = (const upb_fielddef*)r;
if (f->msgdef) {
visit(r, upb_upcast2(f->msgdef), closure);
}
if (!f->subdef_is_symbolic && f->sub.def) {
visit(r, upb_upcast(f->sub.def), closure);
}
}
static void freefield(upb_refcounted *r) {
upb_fielddef *f = (upb_fielddef*)r;
upb_fielddef_uninit_default(f);
if (f->subdef_is_symbolic)
free(f->sub.name);
upb_def_uninit(upb_upcast(f));
free(f);
}
upb_fielddef *upb_fielddef_new(const void *owner) {
static const struct upb_refcounted_vtbl vtbl = {visitfield, freefield};
upb_fielddef *f = malloc(sizeof(*f));
if (!f) return NULL;
if (!upb_def_init(upb_upcast(f), UPB_DEF_FIELD, &vtbl, owner)) {
free(f);
return NULL;
}
f->msgdef = NULL;
f->sub.def = NULL;
f->subdef_is_symbolic = false;
f->label_ = UPB_LABEL_OPTIONAL;
f->type_ = UPB_TYPE_INT32;
f->number_ = 0;
f->type_is_set_ = false;
f->tagdelim = false;
// 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;
}
upb_fielddef *upb_fielddef_dup(const upb_fielddef *f, const void *owner) {
upb_fielddef *newf = upb_fielddef_new(owner);
if (!newf) return NULL;
upb_fielddef_settype(newf, upb_fielddef_type(f));
upb_fielddef_setlabel(newf, upb_fielddef_label(f));
upb_fielddef_setnumber(newf, upb_fielddef_number(f));
upb_fielddef_setname(newf, upb_fielddef_name(f));
if (f->default_is_string) {
str_t *s = upb_value_getptr(upb_fielddef_default(f));
upb_fielddef_setdefaultstr(newf, s->str, s->len);
} else {
upb_fielddef_setdefault(newf, upb_fielddef_default(f));
}
const char *srcname;
if (f->subdef_is_symbolic) {
srcname = f->sub.name; // Might be NULL.
} else {
srcname = f->sub.def ? upb_def_fullname(f->sub.def) : NULL;
}
if (srcname) {
char *newname = malloc(strlen(f->sub.def->fullname) + 2);
if (!newname) {
upb_fielddef_unref(newf, owner);
return NULL;
}
strcpy(newname, ".");
strcat(newname, f->sub.def->fullname);
upb_fielddef_setsubdefname(newf, newname);
free(newname);
}
return newf;
}
bool upb_fielddef_isfrozen(const upb_fielddef *f) {
return upb_def_isfrozen(upb_upcast(f));
}
void upb_fielddef_ref(const upb_fielddef *f, const void *owner) {
upb_def_ref(upb_upcast(f), owner);
}
void upb_fielddef_unref(const upb_fielddef *f, const void *owner) {
upb_def_unref(upb_upcast(f), owner);
}
void upb_fielddef_donateref(
const upb_fielddef *f, const void *from, const void *to) {
upb_def_donateref(upb_upcast(f), from, to);
}
void upb_fielddef_checkref(const upb_fielddef *f, const void *owner) {
upb_def_checkref(upb_upcast(f), owner);
}
bool upb_fielddef_typeisset(const upb_fielddef *f) {
return f->type_is_set_;
}
upb_fieldtype_t upb_fielddef_type(const upb_fielddef *f) {
assert(f->type_is_set_);
return f->type_;
}
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_;
}
const char *upb_fielddef_name(const upb_fielddef *f) {
return upb_def_fullname(upb_upcast(f));
}
const upb_msgdef *upb_fielddef_msgdef(const upb_fielddef *f) {
return f->msgdef;
}
upb_msgdef *upb_fielddef_msgdef_mutable(upb_fielddef *f) {
return (upb_msgdef*)f->msgdef;
}
bool upb_fielddef_setname(upb_fielddef *f, const char *name) {
return upb_def_setfullname(upb_upcast(f), name);
}
upb_value upb_fielddef_default(const upb_fielddef *f) {
assert(f->type_is_set_);
return f->defaultval;
}
const char *upb_fielddef_defaultstr(const upb_fielddef *f, size_t *len) {
assert(f->type_is_set_);
if (f->default_is_string) {
str_t *str = upb_value_getptr(f->defaultval);
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: upb_value_setdouble(&f->defaultval, 0); break;
case UPB_TYPE_FLOAT: upb_value_setfloat(&f->defaultval, 0); break;
case UPB_TYPE_UINT64: upb_value_setuint64(&f->defaultval, 0); break;
case UPB_TYPE_INT64: upb_value_setint64(&f->defaultval, 0); break;
case UPB_TYPE_ENUM:
case UPB_TYPE_INT32: upb_value_setint32(&f->defaultval, 0); break;
case UPB_TYPE_UINT32: upb_value_setuint32(&f->defaultval, 0); break;
case UPB_TYPE_BOOL: upb_value_setbool(&f->defaultval, false); break;
case UPB_TYPE_STRING:
case UPB_TYPE_BYTES:
upb_value_setptr(&f->defaultval, newstr("", 0));
f->default_is_string = true;
break;
case UPB_TYPE_MESSAGE: upb_value_setptr(&f->defaultval, NULL); break;
}
}
const upb_def *upb_fielddef_subdef(const upb_fielddef *f) {
if (upb_fielddef_hassubdef(f) && upb_fielddef_isfrozen(f)) {
assert(f->sub.def);
return f->sub.def;
} else {
return f->subdef_is_symbolic ? NULL : f->sub.def;
}
}
upb_def *upb_fielddef_subdef_mutable(upb_fielddef *f) {
return (upb_def*)upb_fielddef_subdef(f);
}
const char *upb_fielddef_subdefname(const upb_fielddef *f) {
assert(!upb_fielddef_isfrozen(f));
return f->subdef_is_symbolic ? f->sub.name : NULL;
}
bool upb_fielddef_setnumber(upb_fielddef *f, uint32_t number) {
assert(f->msgdef == NULL);
f->number_ = number;
return true;
}
bool upb_fielddef_settype(upb_fielddef *f, upb_fieldtype_t type) {
assert(!upb_fielddef_isfrozen(f));
upb_fielddef_uninit_default(f);
f->type_ = type;
f->type_is_set_ = true;
upb_fielddef_init_default(f);
return true;
}
bool upb_fielddef_setdescriptortype(upb_fielddef *f, int type) {
assert(!upb_fielddef_isfrozen(f));
switch (type) {
case UPB_DESCRIPTOR_TYPE_DOUBLE:
upb_fielddef_settype(f, UPB_TYPE_DOUBLE);
break;
case UPB_DESCRIPTOR_TYPE_FLOAT:
upb_fielddef_settype(f, UPB_TYPE_FLOAT);
break;
case UPB_DESCRIPTOR_TYPE_INT64:
case UPB_DESCRIPTOR_TYPE_SFIXED64:
case UPB_DESCRIPTOR_TYPE_SINT64:
upb_fielddef_settype(f, UPB_TYPE_INT64);
break;
case UPB_DESCRIPTOR_TYPE_UINT64:
case UPB_DESCRIPTOR_TYPE_FIXED64:
upb_fielddef_settype(f, UPB_TYPE_UINT64);
break;
case UPB_DESCRIPTOR_TYPE_INT32:
case UPB_DESCRIPTOR_TYPE_SFIXED32:
case UPB_DESCRIPTOR_TYPE_SINT32:
upb_fielddef_settype(f, UPB_TYPE_INT32);
break;
case UPB_DESCRIPTOR_TYPE_UINT32:
case UPB_DESCRIPTOR_TYPE_FIXED32:
upb_fielddef_settype(f, UPB_TYPE_UINT32);
break;
case UPB_DESCRIPTOR_TYPE_BOOL:
upb_fielddef_settype(f, UPB_TYPE_BOOL);
break;
case UPB_DESCRIPTOR_TYPE_STRING:
upb_fielddef_settype(f, UPB_TYPE_STRING);
break;
case UPB_DESCRIPTOR_TYPE_BYTES:
upb_fielddef_settype(f, UPB_TYPE_BYTES);
break;
case UPB_DESCRIPTOR_TYPE_GROUP:
case UPB_DESCRIPTOR_TYPE_MESSAGE:
upb_fielddef_settype(f, UPB_TYPE_MESSAGE);
break;
case UPB_DESCRIPTOR_TYPE_ENUM:
upb_fielddef_settype(f, UPB_TYPE_ENUM);
break;
default:
return false;
}
if (type == UPB_DESCRIPTOR_TYPE_FIXED64 ||
type == UPB_DESCRIPTOR_TYPE_FIXED32 ||
type == UPB_DESCRIPTOR_TYPE_SFIXED64 ||
type == UPB_DESCRIPTOR_TYPE_SFIXED32) {
upb_fielddef_setintfmt(f, UPB_INTFMT_FIXED);
} else if (type == UPB_DESCRIPTOR_TYPE_SINT64 ||
type == UPB_DESCRIPTOR_TYPE_SINT32) {
upb_fielddef_setintfmt(f, UPB_INTFMT_ZIGZAG);
} else {
upb_fielddef_setintfmt(f, UPB_INTFMT_VARIABLE);
}
upb_fielddef_settagdelim(f, type == UPB_DESCRIPTOR_TYPE_GROUP);
return true;
}
upb_descriptortype_t upb_fielddef_descriptortype(const upb_fielddef *f) {
switch (upb_fielddef_type(f)) {
case UPB_TYPE_FLOAT: return UPB_DESCRIPTOR_TYPE_FLOAT;
case UPB_TYPE_DOUBLE: return UPB_DESCRIPTOR_TYPE_DOUBLE;
case UPB_TYPE_BOOL: return UPB_DESCRIPTOR_TYPE_BOOL;
case UPB_TYPE_STRING: return UPB_DESCRIPTOR_TYPE_STRING;
case UPB_TYPE_BYTES: return UPB_DESCRIPTOR_TYPE_BYTES;
case UPB_TYPE_ENUM: return UPB_DESCRIPTOR_TYPE_ENUM;
case UPB_TYPE_INT32:
switch (upb_fielddef_intfmt(f)) {
case UPB_INTFMT_VARIABLE: return UPB_DESCRIPTOR_TYPE_INT32;
case UPB_INTFMT_FIXED: return UPB_DESCRIPTOR_TYPE_SFIXED32;
case UPB_INTFMT_ZIGZAG: return UPB_DESCRIPTOR_TYPE_SINT32;
}
case UPB_TYPE_INT64:
switch (upb_fielddef_intfmt(f)) {
case UPB_INTFMT_VARIABLE: return UPB_DESCRIPTOR_TYPE_INT64;
case UPB_INTFMT_FIXED: return UPB_DESCRIPTOR_TYPE_SFIXED64;
case UPB_INTFMT_ZIGZAG: return UPB_DESCRIPTOR_TYPE_SINT64;
}
case UPB_TYPE_UINT32:
switch (upb_fielddef_intfmt(f)) {
case UPB_INTFMT_VARIABLE: return UPB_DESCRIPTOR_TYPE_UINT32;
case UPB_INTFMT_FIXED: return UPB_DESCRIPTOR_TYPE_FIXED32;
case UPB_INTFMT_ZIGZAG: return -1;
}
case UPB_TYPE_UINT64:
switch (upb_fielddef_intfmt(f)) {
case UPB_INTFMT_VARIABLE: return UPB_DESCRIPTOR_TYPE_UINT64;
case UPB_INTFMT_FIXED: return UPB_DESCRIPTOR_TYPE_FIXED64;
case UPB_INTFMT_ZIGZAG: return -1;
}
case UPB_TYPE_MESSAGE:
return upb_fielddef_istagdelim(f) ?
UPB_DESCRIPTOR_TYPE_GROUP : UPB_DESCRIPTOR_TYPE_MESSAGE;
}
}
bool upb_fielddef_setlabel(upb_fielddef *f, upb_label_t label) {
assert(!upb_fielddef_isfrozen(f));
f->label_ = label;
return true;
}
bool upb_fielddef_setintfmt(upb_fielddef *f, upb_intfmt_t fmt) {
assert(!upb_fielddef_isfrozen(f));
f->intfmt = fmt;
return true;
}
bool upb_fielddef_settagdelim(upb_fielddef *f, bool tag_delim) {
assert(!upb_fielddef_isfrozen(f));
f->tagdelim = tag_delim;
return true;
}
void upb_fielddef_setdefault(upb_fielddef *f, upb_value value) {
assert(f->type_is_set_);
assert(!upb_fielddef_isfrozen(f));
assert(!upb_fielddef_isstring(f) && !upb_fielddef_issubmsg(f));
if (f->default_is_string) {
str_t *s = upb_value_getptr(f->defaultval);
assert(s);
freestr(s);
}
f->defaultval = value;
f->default_is_string = false;
}
bool upb_fielddef_setdefaultstr(upb_fielddef *f, const void *str, size_t len) {
assert(upb_fielddef_isstring(f) || f->type_ == UPB_TYPE_ENUM);
if (f->type_ == UPB_TYPE_ENUM && !upb_isident(str, len, false))
return false;
if (f->default_is_string) {
str_t *s = upb_value_getptr(f->defaultval);
assert(s);
freestr(s);
} else {
assert(f->type_ == UPB_TYPE_ENUM);
}
str_t *s = newstr(str, len);
upb_value_setptr(&f->defaultval, s);
f->default_is_string = true;
return true;
}
void upb_fielddef_setdefaultcstr(upb_fielddef *f, const char *str) {
assert(f->type_is_set_);
upb_fielddef_setdefaultstr(f, str, str ? strlen(str) : 0);
}
bool upb_fielddef_default_is_symbolic(const upb_fielddef *f) {
return f->type_is_set_ &&
f->default_is_string &&
f->type_ == UPB_TYPE_ENUM;
}
bool upb_fielddef_resolvedefault(upb_fielddef *f) {
if (!upb_fielddef_default_is_symbolic(f)) return true;
str_t *s = upb_value_getptr(f->defaultval);
const upb_enumdef *e = upb_downcast_enumdef(upb_fielddef_subdef(f));
assert(s); // Points to either a real default or the empty string.
assert(e);
if (s->len == 0) {
// The "default default" for an enum is the first defined value.
upb_value_setint32(&f->defaultval, e->defaultval);
} else {
int32_t val = 0;
if (!upb_enumdef_ntoi(e, s->str, &val))
return false;
upb_value_setint32(&f->defaultval, val);
}
f->default_is_string = false;
freestr(s);
return true;
}
static bool upb_subdef_typecheck(upb_fielddef *f, const upb_def *subdef) {
if (f->type_ == UPB_TYPE_MESSAGE)
return upb_dyncast_msgdef(subdef) != NULL;
else if (f->type_ == UPB_TYPE_ENUM)
return upb_dyncast_enumdef(subdef) != NULL;
else {
assert(false);
return false;
}
}
static void release_subdef(upb_fielddef *f) {
if (f->subdef_is_symbolic) {
free(f->sub.name);
} else if (f->sub.def) {
upb_unref2(f->sub.def, f);
}
}
bool upb_fielddef_setsubdef(upb_fielddef *f, const upb_def *subdef) {
assert(!upb_fielddef_isfrozen(f));
assert(upb_fielddef_hassubdef(f));
if (subdef && !upb_subdef_typecheck(f, subdef)) return false;
release_subdef(f);
f->sub.def = subdef;
f->subdef_is_symbolic = false;
if (f->sub.def) upb_ref2(f->sub.def, f);
return true;
}
bool upb_fielddef_setsubdefname(upb_fielddef *f, const char *name) {
assert(!upb_fielddef_isfrozen(f));
assert(upb_fielddef_hassubdef(f));
release_subdef(f);
f->sub.name = upb_strdup(name);
f->subdef_is_symbolic = true;
return true;
}
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_hassubdef(const upb_fielddef *f) {
return upb_fielddef_issubmsg(f) || upb_fielddef_type(f) == UPB_TYPE_ENUM;
}
/* upb_msgdef *****************************************************************/
static void visitmsg(const upb_refcounted *r, upb_refcounted_visit *visit,
void *closure) {
const upb_msgdef *m = (const upb_msgdef*)r;
upb_msg_iter i;
for(upb_msg_begin(&i, m); !upb_msg_done(&i); upb_msg_next(&i)) {
upb_fielddef *f = upb_msg_iter_field(&i);
visit(r, upb_upcast2(f), closure);
}
}
static void freemsg(upb_refcounted *r) {
upb_msgdef *m = (upb_msgdef*)r;
upb_strtable_uninit(&m->ntof);
upb_inttable_uninit(&m->itof);
upb_def_uninit(upb_upcast(m));
free(m);
}
upb_msgdef *upb_msgdef_new(const void *owner) {
static const struct upb_refcounted_vtbl vtbl = {visitmsg, freemsg};
upb_msgdef *m = malloc(sizeof(*m));
if (!m) return NULL;
if (!upb_def_init(upb_upcast(m), UPB_DEF_MSG, &vtbl, owner)) goto err2;
if (!upb_inttable_init(&m->itof, UPB_CTYPE_PTR)) goto err2;
if (!upb_strtable_init(&m->ntof, UPB_CTYPE_PTR)) goto err1;
return m;
err1:
upb_inttable_uninit(&m->itof);
err2:
free(m);
return NULL;
}
upb_msgdef *upb_msgdef_dup(const upb_msgdef *m, const void *owner) {
upb_msgdef *newm = upb_msgdef_new(owner);
if (!newm) return NULL;
upb_def_setfullname(upb_upcast(newm), upb_def_fullname(upb_upcast(m)));
upb_msg_iter i;
for(upb_msg_begin(&i, m); !upb_msg_done(&i); upb_msg_next(&i)) {
upb_fielddef *f = upb_fielddef_dup(upb_msg_iter_field(&i), &f);
if (!f || !upb_msgdef_addfield(newm, f, &f)) {
upb_msgdef_unref(newm, owner);
return NULL;
}
}
return newm;
}
bool upb_msgdef_isfrozen(const upb_msgdef *m) {
return upb_def_isfrozen(upb_upcast(m));
}
void upb_msgdef_ref(const upb_msgdef *m, const void *owner) {
upb_def_ref(upb_upcast(m), owner);
}
void upb_msgdef_unref(const upb_msgdef *m, const void *owner) {
upb_def_unref(upb_upcast(m), owner);
}
void upb_msgdef_donateref(
const upb_msgdef *m, const void *from, const void *to) {
upb_def_donateref(upb_upcast(m), from, to);
}
void upb_msgdef_checkref(const upb_msgdef *m, const void *owner) {
upb_def_checkref(upb_upcast(m), owner);
}
const char *upb_msgdef_fullname(const upb_msgdef *m) {
return upb_def_fullname(upb_upcast(m));
}
bool upb_msgdef_setfullname(upb_msgdef *m, const char *fullname) {
return upb_def_setfullname(upb_upcast(m), fullname);
}
bool upb_msgdef_addfields(upb_msgdef *m, upb_fielddef *const *fields, int n,
const void *ref_donor) {
// Check constraints for all fields before performing any action.
for (int i = 0; i < n; i++) {
upb_fielddef *f = fields[i];
// TODO(haberman): handle the case where two fields of the input duplicate
// name or number.
if (f->msgdef != NULL ||
upb_fielddef_name(f) == NULL || upb_fielddef_number(f) == 0 ||
upb_msgdef_itof(m, upb_fielddef_number(f)) ||
upb_msgdef_ntof(m, upb_fielddef_name(f)))
return false;
}
// Constraint checks ok, perform the action.
for (int i = 0; i < n; i++) {
upb_fielddef *f = fields[i];
f->msgdef = m;
upb_inttable_insert(&m->itof, upb_fielddef_number(f), upb_value_ptr(f));
upb_strtable_insert(&m->ntof, upb_fielddef_name(f), upb_value_ptr(f));
upb_ref2(f, m);
upb_ref2(m, f);
if (ref_donor) upb_fielddef_unref(f, ref_donor);
}
return true;
}
bool upb_msgdef_addfield(upb_msgdef *m, upb_fielddef *f,
const void *ref_donor) {
return upb_msgdef_addfields(m, &f, 1, ref_donor);
}
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) {
upb_value val;
return upb_strtable_lookup(&m->ntof, name, &val) ?
upb_value_getptr(val) : NULL;
}
upb_fielddef *upb_msgdef_itof_mutable(upb_msgdef *m, uint32_t i) {
return (upb_fielddef*)upb_msgdef_itof(m, i);
}
upb_fielddef *upb_msgdef_ntof_mutable(upb_msgdef *m, const char *name) {
return (upb_fielddef*)upb_msgdef_ntof(m, name);
}
int upb_msgdef_numfields(const upb_msgdef *m) {
return upb_strtable_count(&m->ntof);
}
void upb_msg_begin(upb_msg_iter *iter, const upb_msgdef *m) {
upb_inttable_begin(iter, &m->itof);
}
void upb_msg_next(upb_msg_iter *iter) { upb_inttable_next(iter); }
bool upb_msg_done(upb_msg_iter *iter) { return upb_inttable_done(iter); }
upb_fielddef *upb_msg_iter_field(upb_msg_iter *iter) {
return (upb_fielddef*)upb_value_getptr(upb_inttable_iter_value(iter));
}
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