/* * upb - a minimalist implementation of protocol buffers. * * Copyright (c) 2008-2012 Google Inc. See LICENSE for details. * Author: Josh Haberman */ #include "upb/def.h" #include #include #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 = 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 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; } /* 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, upb_status *s) { assert(!upb_def_isfrozen(def)); if (!upb_isident(fullname, strlen(fullname), true, s)) 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_msgdef_upcast_mutable( upb_msgdef_dup(upb_downcast_msgdef(def), o)); case UPB_DEF_FIELD: return upb_fielddef_upcast_mutable( upb_fielddef_dup(upb_downcast_fielddef(def), o)); case UPB_DEF_ENUM: return upb_enumdef_upcast_mutable( upb_enumdef_dup(upb_downcast_enumdef(def), o)); default: assert(false); return NULL; } } 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; 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_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(). */ 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). */ 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; 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; int i; uint32_t selector; int n = upb_msgdef_numfields(m); upb_fielddef **fields = malloc(n * sizeof(*fields)); if (!fields) 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); assert(f->msg.def == m); if (!upb_validate_field(f, s)) { free(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); 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 free(fields); return true; } bool upb_def_freeze(upb_def *const* defs, int n, upb_status *s) { int i; int maxdepth; bool ret; upb_status_clear(s); /* 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 if (def->type == UPB_DEF_ENUM) { if (!upb_validate_enumdef(upb_dyncast_enumdef(def), s)) { goto err; } } else { /* Set now to detect transitive closure in the second pass. */ def->came_from_user = true; } } /* Second pass of validation. Also assign selector bases and indexes, and * compact tables. */ for (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); if (!assign_msg_indices(m, s)) { goto err; } } else if (e) { upb_inttable_compact(&e->iton); } } /* Def graph contains FieldDefs between each MessageDef, so double the * limit. */ maxdepth = UPB_MAX_MESSAGE_DEPTH * 2; /* Validation all passed; freeze the defs. */ ret = upb_refcounted_freeze((upb_refcounted * const *)defs, n, s, maxdepth); assert(!(s && ret != upb_ok(s))); return ret; err: for (i = 0; i < n; i++) { defs[i]->came_from_user = false; } assert(!(s && 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_enumdef_upcast_mutable(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_enumdef_upcast_mutable(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_enum_iter i; upb_enumdef *new_e = upb_enumdef_new(owner); if (!new_e) return NULL; 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_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)); } 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) { 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) && !upb_inttable_insert(&e->iton, num, upb_value_cstr(upb_strdup(name)))) { 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_VAR(ok, ok); } return true; } int32_t upb_enumdef_default(const upb_enumdef *e) { assert(upb_enumdef_iton(e, e->defaultval)); return e->defaultval; } bool upb_enumdef_setdefault(upb_enumdef *e, int32_t val, upb_status *s) { 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); } 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_msgdef_upcast2(upb_fielddef_containingtype(f)), closure); } if (upb_fielddef_containingoneof(f)) { visit(r, upb_oneofdef_upcast2(upb_fielddef_containingoneof(f)), closure); } if (upb_fielddef_subdef(f)) { visit(r, upb_def_upcast(upb_fielddef_subdef(f)), 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_fielddef_upcast_mutable(f)); free(f); } static const char *enumdefaultstr(const upb_fielddef *f) { const upb_enumdef *e; 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)); assert(name); return name; } } } return NULL; } static bool enumdefaultint32(const upb_fielddef *f, int32_t *val) { const upb_enumdef *e; 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; } upb_fielddef *upb_fielddef_new(const void *o) { static const struct upb_refcounted_vtbl vtbl = {visitfield, freefield}; upb_fielddef *f = malloc(sizeof(*f)); if (!f) return NULL; if (!upb_def_init(upb_fielddef_upcast_mutable(f), UPB_DEF_FIELD, &vtbl, o)) { free(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; } upb_fielddef *upb_fielddef_dup(const upb_fielddef *f, const void *owner) { const char *srcname; 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), NULL); upb_fielddef_setname(newf, upb_fielddef_name(f), NULL); if (f->default_is_string && f->defaultval.bytes) { str_t *s = f->defaultval.bytes; upb_fielddef_setdefaultstr(newf, s->str, s->len, NULL); } else { newf->default_is_string = f->default_is_string; newf->defaultval = f->defaultval; } 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, NULL); free(newname); } return newf; } 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_; } 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)); } 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) free(f->msg.name); } bool upb_fielddef_setcontainingtypename(upb_fielddef *f, const char *name, upb_status *s) { 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 "."). */ release_containingtype(f); f->msg.name = upb_strdup(name); 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); 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_VAR(ok, 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) { assert(f->type_is_set_); 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); 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; } 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) { if (f->subdef_is_symbolic) { return f->sub.name; } else if (f->sub.def) { return upb_def_fullname(f->sub.def); } else { return NULL; } } bool upb_fielddef_setnumber(upb_fielddef *f, uint32_t number, upb_status *s) { if (upb_fielddef_containingtype(f)) { upb_status_seterrmsg( s, "cannot change field number after adding to a message"); return false; } if (number == 0 || number > UPB_MAX_FIELDNUMBER) { upb_status_seterrf(s, "invalid field number (%u)", number); return false; } f->number_ = number; return true; } void upb_fielddef_settype(upb_fielddef *f, upb_fieldtype_t type) { assert(!upb_fielddef_isfrozen(f)); assert(upb_fielddef_checktype(type)); upb_fielddef_uninit_default(f); f->type_ = type; f->type_is_set_ = true; upb_fielddef_init_default(f); } void 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: assert(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); } 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; } return 0; } void upb_fielddef_setisextension(upb_fielddef *f, bool is_extension) { assert(!upb_fielddef_isfrozen(f)); f->is_extension_ = is_extension; } void upb_fielddef_setlazy(upb_fielddef *f, bool lazy) { assert(!upb_fielddef_isfrozen(f)); f->lazy_ = lazy; } void upb_fielddef_setpacked(upb_fielddef *f, bool packed) { assert(!upb_fielddef_isfrozen(f)); f->packed_ = packed; } void upb_fielddef_setlabel(upb_fielddef *f, upb_label_t label) { assert(!upb_fielddef_isfrozen(f)); assert(upb_fielddef_checklabel(label)); f->label_ = label; } void upb_fielddef_setintfmt(upb_fielddef *f, upb_intfmt_t fmt) { assert(!upb_fielddef_isfrozen(f)); assert(upb_fielddef_checkintfmt(fmt)); f->intfmt = fmt; } void upb_fielddef_settagdelim(upb_fielddef *f, bool tag_delim) { assert(!upb_fielddef_isfrozen(f)); f->tagdelim = tag_delim; f->tagdelim = tag_delim; } static bool checksetdefault(upb_fielddef *f, upb_fieldtype_t type) { if (!f->type_is_set_ || upb_fielddef_isfrozen(f) || upb_fielddef_type(f) != type) { assert(false); return false; } if (f->default_is_string) { str_t *s = f->defaultval.bytes; assert(s || type == UPB_TYPE_ENUM); if (s) freestr(s); } f->default_is_string = false; return true; } void upb_fielddef_setdefaultint64(upb_fielddef *f, int64_t value) { if (checksetdefault(f, UPB_TYPE_INT64)) f->defaultval.sint = value; } void upb_fielddef_setdefaultint32(upb_fielddef *f, int32_t value) { if ((upb_fielddef_type(f) == UPB_TYPE_ENUM && checksetdefault(f, UPB_TYPE_ENUM)) || checksetdefault(f, UPB_TYPE_INT32)) { f->defaultval.sint = value; } } void upb_fielddef_setdefaultuint64(upb_fielddef *f, uint64_t value) { if (checksetdefault(f, UPB_TYPE_UINT64)) f->defaultval.uint = value; } void upb_fielddef_setdefaultuint32(upb_fielddef *f, uint32_t value) { if (checksetdefault(f, UPB_TYPE_UINT32)) f->defaultval.uint = value; } void upb_fielddef_setdefaultbool(upb_fielddef *f, bool value) { if (checksetdefault(f, UPB_TYPE_BOOL)) f->defaultval.uint = value; } void upb_fielddef_setdefaultfloat(upb_fielddef *f, float value) { if (checksetdefault(f, UPB_TYPE_FLOAT)) f->defaultval.flt = value; } void upb_fielddef_setdefaultdouble(upb_fielddef *f, double value) { if (checksetdefault(f, UPB_TYPE_DOUBLE)) f->defaultval.dbl = value; } bool upb_fielddef_setdefaultstr(upb_fielddef *f, const void *str, size_t len, upb_status *s) { str_t *str2; assert(upb_fielddef_isstring(f) || f->type_ == UPB_TYPE_ENUM); if (f->type_ == UPB_TYPE_ENUM && !upb_isident(str, len, false, s)) return false; if (f->default_is_string) { str_t *s = f->defaultval.bytes; assert(s || f->type_ == UPB_TYPE_ENUM); if (s) freestr(s); } else { assert(f->type_ == UPB_TYPE_ENUM); } str2 = newstr(str, len); f->defaultval.bytes = str2; f->default_is_string = true; return true; } void upb_fielddef_setdefaultcstr(upb_fielddef *f, const char *str, upb_status *s) { assert(f->type_is_set_); upb_fielddef_setdefaultstr(f, str, str ? strlen(str) : 0, s); } bool upb_fielddef_enumhasdefaultint32(const upb_fielddef *f) { int32_t val; assert(f->type_is_set_ && f->type_ == UPB_TYPE_ENUM); return enumdefaultint32(f, &val); } bool upb_fielddef_enumhasdefaultstr(const upb_fielddef *f) { assert(f->type_is_set_ && f->type_ == UPB_TYPE_ENUM); return enumdefaultstr(f) != NULL; } static bool upb_subdef_typecheck(upb_fielddef *f, const upb_def *subdef, upb_status *s) { if (f->type_ == UPB_TYPE_MESSAGE) { if (upb_dyncast_msgdef(subdef)) return true; upb_status_seterrmsg(s, "invalid subdef type for this submessage field"); return false; } else if (f->type_ == UPB_TYPE_ENUM) { if (upb_dyncast_enumdef(subdef)) return true; upb_status_seterrmsg(s, "invalid subdef type for this enum field"); return false; } else { upb_status_seterrmsg(s, "only message and enum fields can have a subdef"); 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, upb_status *s) { assert(!upb_fielddef_isfrozen(f)); assert(upb_fielddef_hassubdef(f)); if (subdef && !upb_subdef_typecheck(f, subdef, s)) 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_setmsgsubdef(upb_fielddef *f, const upb_msgdef *subdef, upb_status *s) { return upb_fielddef_setsubdef(f, upb_msgdef_upcast(subdef), s); } bool upb_fielddef_setenumsubdef(upb_fielddef *f, const upb_enumdef *subdef, upb_status *s) { return upb_fielddef_setsubdef(f, upb_enumdef_upcast(subdef), s); } bool upb_fielddef_setsubdefname(upb_fielddef *f, const char *name, upb_status *s) { assert(!upb_fielddef_isfrozen(f)); if (!upb_fielddef_hassubdef(f)) { upb_status_seterrmsg(s, "field type does not accept a subdef"); return false; } /* TODO: validate name (upb_isident() doesn't quite work atm because this name * may have a leading "."). */ 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_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 *****************************************************************/ static void visitmsg(const upb_refcounted *r, upb_refcounted_visit *visit, void *closure) { upb_msg_oneof_iter o; const upb_msgdef *m = (const upb_msgdef*)r; upb_msg_field_iter i; for(upb_msg_field_begin(&i, m); !upb_msg_field_done(&i); upb_msg_field_next(&i)) { upb_fielddef *f = upb_msg_iter_field(&i); visit(r, upb_fielddef_upcast2(f), closure); } for(upb_msg_oneof_begin(&o, m); !upb_msg_oneof_done(&o); upb_msg_oneof_next(&o)) { upb_oneofdef *f = upb_msg_iter_oneof(&o); visit(r, upb_oneofdef_upcast2(f), closure); } } static void freemsg(upb_refcounted *r) { upb_msgdef *m = (upb_msgdef*)r; upb_strtable_uninit(&m->ntoo); upb_strtable_uninit(&m->ntof); upb_inttable_uninit(&m->itof); upb_def_uninit(upb_msgdef_upcast_mutable(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_msgdef_upcast_mutable(m), UPB_DEF_MSG, &vtbl, owner)) goto err2; if (!upb_inttable_init(&m->itof, UPB_CTYPE_PTR)) goto err3; if (!upb_strtable_init(&m->ntof, UPB_CTYPE_PTR)) goto err2; if (!upb_strtable_init(&m->ntoo, UPB_CTYPE_PTR)) goto err1; m->map_entry = false; return m; err1: upb_strtable_uninit(&m->ntof); err2: upb_inttable_uninit(&m->itof); err3: free(m); return NULL; } upb_msgdef *upb_msgdef_dup(const upb_msgdef *m, const void *owner) { bool ok; upb_msg_field_iter i; upb_msg_oneof_iter o; upb_msgdef *newm = upb_msgdef_new(owner); if (!newm) return NULL; ok = upb_def_setfullname(upb_msgdef_upcast_mutable(newm), upb_def_fullname(upb_msgdef_upcast(m)), NULL); newm->map_entry = m->map_entry; UPB_ASSERT_VAR(ok, ok); for(upb_msg_field_begin(&i, m); !upb_msg_field_done(&i); upb_msg_field_next(&i)) { upb_fielddef *f = upb_fielddef_dup(upb_msg_iter_field(&i), &f); /* Fields in oneofs are dup'd below. */ if (upb_fielddef_containingoneof(f)) continue; if (!f || !upb_msgdef_addfield(newm, f, &f, NULL)) { upb_msgdef_unref(newm, owner); return NULL; } } for(upb_msg_oneof_begin(&o, m); !upb_msg_oneof_done(&o); upb_msg_oneof_next(&o)) { upb_oneofdef *f = upb_oneofdef_dup(upb_msg_iter_oneof(&o), &f); if (!f || !upb_msgdef_addoneof(newm, f, &f, NULL)) { upb_msgdef_unref(newm, owner); return NULL; } } return newm; } bool upb_msgdef_freeze(upb_msgdef *m, upb_status *status) { upb_def *d = upb_msgdef_upcast_mutable(m); return upb_def_freeze(&d, 1, status); } const char *upb_msgdef_fullname(const upb_msgdef *m) { return upb_def_fullname(upb_msgdef_upcast(m)); } bool upb_msgdef_setfullname(upb_msgdef *m, const char *fullname, upb_status *s) { return upb_def_setfullname(upb_msgdef_upcast_mutable(m), fullname, s); } /* Helper: check that the field |f| is safe to add to msgdef |m|. Set an error * on status |s| and return false if not. */ static bool check_field_add(const upb_msgdef *m, const upb_fielddef *f, upb_status *s) { if (upb_fielddef_containingtype(f) != NULL) { upb_status_seterrmsg(s, "fielddef already belongs to a message"); return false; } else if (upb_fielddef_name(f) == NULL || upb_fielddef_number(f) == 0) { upb_status_seterrmsg(s, "field name or number were not set"); return false; } else if (upb_msgdef_ntofz(m, upb_fielddef_name(f)) || upb_msgdef_itof(m, upb_fielddef_number(f))) { upb_status_seterrmsg(s, "duplicate field name or number for field"); return false; } return true; } static void add_field(upb_msgdef *m, upb_fielddef *f, const void *ref_donor) { release_containingtype(f); f->msg.def = m; f->msg_is_symbolic = false; 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); } bool upb_msgdef_addfield(upb_msgdef *m, upb_fielddef *f, const void *ref_donor, upb_status *s) { /* TODO: extensions need to have a separate namespace, because proto2 allows a * top-level extension (ie. one not in any package) to have the same name as a * field from the message. * * This also implies that there needs to be a separate lookup-by-name method * for extensions. It seems desirable for iteration to return both extensions * and non-extensions though. * * We also need to validate that the field number is in an extension range iff * it is an extension. * * This method is idempotent. Check if |f| is already part of this msgdef and * return immediately if so. */ if (upb_fielddef_containingtype(f) == m) { return true; } /* Check constraints for all fields before performing any action. */ if (!check_field_add(m, f, s)) { return false; } else if (upb_fielddef_containingoneof(f) != NULL) { /* Fields in a oneof can only be added by adding the oneof to the msgdef. */ upb_status_seterrmsg(s, "fielddef is part of a oneof"); return false; } /* Constraint checks ok, perform the action. */ add_field(m, f, ref_donor); return true; } bool upb_msgdef_addoneof(upb_msgdef *m, upb_oneofdef *o, const void *ref_donor, upb_status *s) { upb_oneof_iter it; /* Check various conditions that would prevent this oneof from being added. */ if (upb_oneofdef_containingtype(o)) { upb_status_seterrmsg(s, "oneofdef already belongs to a message"); return false; } else if (upb_oneofdef_name(o) == NULL) { upb_status_seterrmsg(s, "oneofdef name was not set"); return false; } else if (upb_msgdef_ntooz(m, upb_oneofdef_name(o))) { upb_status_seterrmsg(s, "duplicate oneof name"); return false; } /* Check that all of the oneof's fields do not conflict with names or numbers * of fields already in the message. */ for (upb_oneof_begin(&it, o); !upb_oneof_done(&it); upb_oneof_next(&it)) { const upb_fielddef *f = upb_oneof_iter_field(&it); if (!check_field_add(m, f, s)) { return false; } } /* Everything checks out -- commit now. */ /* Add oneof itself first. */ o->parent = m; upb_strtable_insert(&m->ntoo, upb_oneofdef_name(o), upb_value_ptr(o)); upb_ref2(o, m); upb_ref2(m, o); /* Add each field of the oneof directly to the msgdef. */ for (upb_oneof_begin(&it, o); !upb_oneof_done(&it); upb_oneof_next(&it)) { upb_fielddef *f = upb_oneof_iter_field(&it); add_field(m, f, NULL); } if (ref_donor) upb_oneofdef_unref(o, ref_donor); return true; } 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; return upb_strtable_lookup2(&m->ntof, name, len, &val) ? upb_value_getptr(val) : NULL; } const upb_oneofdef *upb_msgdef_ntoo(const upb_msgdef *m, const char *name, size_t len) { upb_value val; return upb_strtable_lookup2(&m->ntoo, name, len, &val) ? upb_value_getptr(val) : NULL; } int upb_msgdef_numfields(const upb_msgdef *m) { return upb_strtable_count(&m->ntof); } int upb_msgdef_numoneofs(const upb_msgdef *m) { return upb_strtable_count(&m->ntoo); } void upb_msgdef_setmapentry(upb_msgdef *m, bool map_entry) { assert(!upb_msgdef_isfrozen(m)); m->map_entry = map_entry; } bool upb_msgdef_mapentry(const upb_msgdef *m) { return m->map_entry; } 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->ntoo); } void upb_msg_oneof_next(upb_msg_oneof_iter *iter) { upb_strtable_next(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 ***************************************************************/ static void visitoneof(const upb_refcounted *r, upb_refcounted_visit *visit, void *closure) { const upb_oneofdef *o = (const upb_oneofdef*)r; upb_oneof_iter i; for (upb_oneof_begin(&i, o); !upb_oneof_done(&i); upb_oneof_next(&i)) { const upb_fielddef *f = upb_oneof_iter_field(&i); visit(r, upb_fielddef_upcast2(f), closure); } if (o->parent) { visit(r, upb_msgdef_upcast2(o->parent), closure); } } static void freeoneof(upb_refcounted *r) { upb_oneofdef *o = (upb_oneofdef*)r; upb_strtable_uninit(&o->ntof); upb_inttable_uninit(&o->itof); upb_def_uninit(upb_oneofdef_upcast_mutable(o)); free(o); } upb_oneofdef *upb_oneofdef_new(const void *owner) { static const struct upb_refcounted_vtbl vtbl = {visitoneof, freeoneof}; upb_oneofdef *o = malloc(sizeof(*o)); o->parent = NULL; if (!o) return NULL; if (!upb_def_init(upb_oneofdef_upcast_mutable(o), UPB_DEF_ONEOF, &vtbl, owner)) goto err2; if (!upb_inttable_init(&o->itof, UPB_CTYPE_PTR)) goto err2; if (!upb_strtable_init(&o->ntof, UPB_CTYPE_PTR)) goto err1; return o; err1: upb_inttable_uninit(&o->itof); err2: free(o); return NULL; } upb_oneofdef *upb_oneofdef_dup(const upb_oneofdef *o, const void *owner) { bool ok; upb_oneof_iter i; upb_oneofdef *newo = upb_oneofdef_new(owner); if (!newo) return NULL; ok = upb_def_setfullname(upb_oneofdef_upcast_mutable(newo), upb_def_fullname(upb_oneofdef_upcast(o)), NULL); UPB_ASSERT_VAR(ok, ok); for (upb_oneof_begin(&i, o); !upb_oneof_done(&i); upb_oneof_next(&i)) { upb_fielddef *f = upb_fielddef_dup(upb_oneof_iter_field(&i), &f); if (!f || !upb_oneofdef_addfield(newo, f, &f, NULL)) { upb_oneofdef_unref(newo, owner); return NULL; } } return newo; } const char *upb_oneofdef_name(const upb_oneofdef *o) { return upb_def_fullname(upb_oneofdef_upcast(o)); } bool upb_oneofdef_setname(upb_oneofdef *o, const char *fullname, upb_status *s) { if (upb_oneofdef_containingtype(o)) { upb_status_seterrmsg(s, "oneof already added to a message"); return false; } return upb_def_setfullname(upb_oneofdef_upcast_mutable(o), fullname, s); } 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); } bool upb_oneofdef_addfield(upb_oneofdef *o, upb_fielddef *f, const void *ref_donor, upb_status *s) { assert(!upb_oneofdef_isfrozen(o)); assert(!o->parent || !upb_msgdef_isfrozen(o->parent)); /* This method is idempotent. Check if |f| is already part of this oneofdef * and return immediately if so. */ if (upb_fielddef_containingoneof(f) == o) { return true; } /* The field must have an OPTIONAL label. */ if (upb_fielddef_label(f) != UPB_LABEL_OPTIONAL) { upb_status_seterrmsg(s, "fields in oneof must have OPTIONAL label"); return false; } /* Check that no field with this name or number exists already in the oneof. * Also check that the field is not already part of a oneof. */ if (upb_fielddef_name(f) == NULL || upb_fielddef_number(f) == 0) { upb_status_seterrmsg(s, "field name or number were not set"); return false; } else if (upb_oneofdef_itof(o, upb_fielddef_number(f)) || upb_oneofdef_ntofz(o, upb_fielddef_name(f))) { upb_status_seterrmsg(s, "duplicate field name or number"); return false; } else if (upb_fielddef_containingoneof(f) != NULL) { upb_status_seterrmsg(s, "fielddef already belongs to a oneof"); return false; } /* We allow adding a field to the oneof either if the field is not part of a * msgdef, or if it is and we are also part of the same msgdef. */ if (o->parent == NULL) { /* If we're not in a msgdef, the field cannot be either. Otherwise we would * need to magically add this oneof to a msgdef to remain consistent, which * is surprising behavior. */ if (upb_fielddef_containingtype(f) != NULL) { upb_status_seterrmsg(s, "fielddef already belongs to a message, but " "oneof does not"); return false; } } else { /* If we're in a msgdef, the user can add fields that either aren't in any * msgdef (in which case they're added to our msgdef) or already a part of * our msgdef. */ if (upb_fielddef_containingtype(f) != NULL && upb_fielddef_containingtype(f) != o->parent) { upb_status_seterrmsg(s, "fielddef belongs to a different message " "than oneof"); return false; } } /* Commit phase. First add the field to our parent msgdef, if any, because * that may fail; then add the field to our own tables. */ if (o->parent != NULL && upb_fielddef_containingtype(f) == NULL) { if (!upb_msgdef_addfield((upb_msgdef*)o->parent, f, NULL, s)) { return false; } } release_containingtype(f); f->oneof = o; upb_inttable_insert(&o->itof, upb_fielddef_number(f), upb_value_ptr(f)); upb_strtable_insert(&o->ntof, upb_fielddef_name(f), upb_value_ptr(f)); upb_ref2(f, o); upb_ref2(o, f); if (ref_donor) upb_fielddef_unref(f, ref_donor); return true; } 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); }