upb_def *upb_def_dup(const upb_def *def) {
switch (def->type) {
case UPB_DEF_MSG:
return UPB_UPCAST(upb_msgdef_dup(upb_downcast_msgdef_const(def)));
case UPB_DEF_ENUM:
return UPB_UPCAST(upb_enumdef_dup(upb_downcast_enumdef_const(def)));
default: assert(false); return NULL;
}
}
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;
}
}
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->msg.def = NULL;
f->sub.def = 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;
// 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;
}
// Handlers for google.protobuf.DescriptorProto (representing a message).
static bool msg_startmsg(void *closure, const void *hd) {
UPB_UNUSED(hd);
upb_descreader *r = closure;
upb_deflist_push(&r->defs, UPB_UPCAST(upb_msgdef_new(&r->defs)));
upb_descreader_startcontainer(r);
return true;
}
upb_msgdef *upb_msgdef_dup(const upb_msgdef *m, const void *owner) {
upb_msgdef *newm = upb_msgdef_new(owner);
if (!newm) return NULL;
bool ok = upb_def_setfullname(UPB_UPCAST(newm),
upb_def_fullname(UPB_UPCAST(m)), NULL);
UPB_ASSERT_VAR(ok, ok);
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, NULL)) {
upb_msgdef_unref(newm, owner);
return NULL;
}
}
return newm;
}
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);
}
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);
}
static int PyUpb_MessageDef_setattro(
PyObject *o, PyObject *key, PyObject *val) {
upb_msgdef *m = Check_MessageDef(o, -1);
if (!upb_def_ismutable(UPB_UPCAST(m))) {
PyErr_SetString(PyExc_TypeError, "MessageDef is not mutable.");
return -1;
}
const char *name = PyString_AsString(key);
if (streql(name, "fqname")) {
const char *fqname = PyString_AsString(val);
if (!fqname || !upb_def_setfqname(UPB_UPCAST(m), fqname))
return PyUpb_ErrorInt("Invalid fqname");
} else {
return PyUpb_ErrorInt("Invalid MessageDef member.");
}
return 0;
}
static void cleanup()
{
for (int i = 0; i < NUM_MESSAGES; i++)
upb_stdmsg_free(msg[i], def);
upb_def_unref(UPB_UPCAST(def));
upb_stringsrc_uninit(&strsrc);
upb_decoder_uninit(&d);
}
static void cleanup()
{
free(input_str);
upb_def_unref(UPB_UPCAST(def), &def);
upb_decoder_uninit(&decoder);
upb_decoderplan_unref(plan);
upb_stringsrc_uninit(&stringsrc);
}
mgroup *newgroup(const void *owner) {
mgroup *g = malloc(sizeof(*g));
static const struct upb_refcounted_vtbl vtbl = {visitgroup, freegroup};
upb_refcounted_init(UPB_UPCAST(g), &vtbl, owner);
upb_inttable_init(&g->methods, UPB_CTYPE_PTR);
g->bytecode = NULL;
g->bytecode_end = NULL;
return g;
}
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 PyObject *PyUpb_MessageDef_getattro(PyObject *obj, PyObject *attr_name) {
upb_msgdef *m = Check_MessageDef(obj, NULL);
const char *name = PyString_AsString(attr_name);
if (streql(name, "fqname")) {
const char *fqname = upb_def_fqname(UPB_UPCAST(m));
return fqname == NULL ? Py_None : PyString_FromString(fqname);
}
return PyObject_GenericGetAttr(obj, attr_name);
}
static bool pushextension(void *closure, const void *hd) {
UPB_UNUSED(hd);
upb_descreader *r = closure;
assert(upb_fielddef_containingtypename(r->f));
upb_fielddef_setisextension(r->f, true);
upb_deflist_push(&r->defs, UPB_UPCAST(r->f));
r->f = NULL;
return true;
}
static void visitfield(const upb_refcounted *r, upb_refcounted_visit *visit,
void *closure) {
const upb_fielddef *f = (const upb_fielddef*)r;
if (upb_fielddef_containingtype(f)) {
visit(r, UPB_UPCAST2(upb_fielddef_containingtype(f)), closure);
}
if (upb_fielddef_subdef(f)) {
visit(r, UPB_UPCAST(upb_fielddef_subdef(f)), closure);
}
}
static void visitgroup(const upb_refcounted *r, upb_refcounted_visit *visit,
void *closure) {
const mgroup *g = (const mgroup*)r;
upb_inttable_iter i;
upb_inttable_begin(&i, &g->methods);
for(; !upb_inttable_done(&i); upb_inttable_next(&i)) {
upb_pbdecodermethod *method = upb_value_getptr(upb_inttable_iter_value(&i));
visit(r, UPB_UPCAST(method), closure);
}
}
static bool msg_endmsg(void *closure, const void *hd, upb_status *status) {
UPB_UNUSED(hd);
upb_descreader *r = closure;
upb_msgdef *m = upb_descreader_top(r);
if(!upb_def_fullname(UPB_UPCAST(m))) {
upb_status_seterrmsg(status, "Encountered message with no name.");
return false;
}
upb_descreader_endcontainer(r);
return true;
}
const upb_msgdef *upb_symtab_lookupmsg(const upb_symtab *s, const char *sym) {
upb_rwlock_rdlock(&s->lock);
upb_symtab_ent *e = upb_strtable_lookup(&s->symtab, sym);
upb_msgdef *ret = NULL;
if(e && e->def->type == UPB_DEF_MSG) {
ret = upb_downcast_msgdef(e->def);
upb_def_ref(UPB_UPCAST(ret));
}
upb_rwlock_unlock(&s->lock);
return ret;
}
static void visithandlers(const upb_refcounted *r, upb_refcounted_visit *visit,
void *closure) {
const upb_handlers *h = (const upb_handlers*)r;
upb_msg_iter i;
for(upb_msg_begin(&i, h->msg); !upb_msg_done(&i); upb_msg_next(&i)) {
upb_fielddef *f = upb_msg_iter_field(&i);
if (!upb_fielddef_issubmsg(f)) continue;
const upb_handlers *sub = upb_handlers_getsubhandlers(h, f);
if (sub) visit(r, UPB_UPCAST(sub), closure);
}
}
bool upb_msgdef_setextrange(upb_msgdef *m, uint32_t start, uint32_t end) {
assert(upb_def_ismutable(UPB_UPCAST(m)));
if (start == 0 && end == 0) {
// Clearing the extension range -- ok to fall through.
} else if (start >= end || start < 1 || end > UPB_MAX_FIELDNUMBER) {
return false;
}
m->extstart = start;
m->extend = start;
return true;
}
upb_handlers *upb_handlers_new(const upb_msgdef *md, const void *owner) {
assert(upb_msgdef_isfrozen(md));
int extra = sizeof(upb_handlers_tabent) * (md->selector_count - 1);
upb_handlers *h = calloc(sizeof(*h) + extra, 1);
if (!h) return NULL;
h->msg = md;
upb_msgdef_ref(h->msg, h);
upb_status_clear(&h->status_);
h->sub = calloc(md->submsg_field_count, sizeof(*h->sub));
if (!h->sub) goto oom;
if (!upb_refcounted_init(UPB_UPCAST(h), &vtbl, owner)) goto oom;
// calloc() above initialized all handlers to NULL.
return h;
oom:
freehandlers(UPB_UPCAST(h));
return NULL;
}
static void cleanup()
{
if (!BYREF) {
// Undo our fabrication from before.
input_str->refcount.v = 1;
}
upb_string_unref(input_str);
upb_msg_unref(msg, def);
upb_def_unref(UPB_UPCAST(def));
upb_stringsrc_uninit(&strsrc);
upb_decoder_uninit(&d);
}
static size_t msg_onname(void *closure, const void *hd, const char *buf,
size_t n, const upb_bufhandle *handle) {
UPB_UNUSED(hd);
UPB_UNUSED(handle);
upb_descreader *r = closure;
upb_msgdef *m = upb_descreader_top(r);
// XXX: see comment at the top of the file.
char *name = upb_strndup(buf, n);
upb_def_setfullname(UPB_UPCAST(m), name, NULL);
upb_descreader_setscopename(r, name); // Passes ownership of name.
return n;
}
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);
}
bool upb_handlers_setsubhandlers(upb_handlers *h, const upb_fielddef *f,
const upb_handlers *sub) {
assert(sub);
assert(!upb_handlers_isfrozen(h));
assert(upb_fielddef_issubmsg(f));
if (SUBH_F(h, f)) return false; // Can't reset.
if (UPB_UPCAST(upb_handlers_msgdef(sub)) != upb_fielddef_subdef(f)) {
return false;
}
SUBH_F(h, f) = sub;
upb_ref2(sub, h);
return true;
}
static upb_pbdecodermethod *newmethod(const upb_handlers *dest_handlers,
mgroup *group) {
static const struct upb_refcounted_vtbl vtbl = {visitmethod, freemethod};
upb_pbdecodermethod *ret = malloc(sizeof(*ret));
upb_refcounted_init(UPB_UPCAST(ret), &vtbl, &ret);
upb_byteshandler_init(&ret->input_handler_);
// The method references the group and vice-versa, in a circular reference.
upb_ref2(ret, group);
upb_ref2(group, ret);
upb_inttable_insertptr(&group->methods, dest_handlers, upb_value_ptr(ret));
upb_refcounted_unref(UPB_UPCAST(ret), &ret);
ret->group = UPB_UPCAST(group);
ret->dest_handlers_ = dest_handlers;
ret->is_native_ = false; // If we JIT, it will update this later.
upb_inttable_init(&ret->dispatch, UPB_CTYPE_UINT64);
if (ret->dest_handlers_) {
upb_handlers_ref(ret->dest_handlers_, ret);
}
return ret;
}
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_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;
}
const upb_handlers *upb_handlers_newfrozen(const upb_msgdef *m,
const void *owner,
upb_handlers_callback *callback,
void *closure) {
dfs_state state;
state.callback = callback;
state.closure = closure;
if (!upb_inttable_init(&state.tab, UPB_CTYPE_PTR)) return NULL;
upb_handlers *ret = newformsg(m, owner, &state);
upb_inttable_uninit(&state.tab);
if (!ret) return NULL;
upb_refcounted *r = UPB_UPCAST(ret);
bool ok = upb_refcounted_freeze(&r, 1, NULL, UPB_MAX_HANDLER_DEPTH);
UPB_ASSERT_VAR(ok, ok);
return ret;
}
void upb_pbdecodermethod_ref(const upb_pbdecodermethod *m, const void *owner) {
upb_refcounted_ref(UPB_UPCAST(m), owner);
}