--- /dev/null
+
+#include "upb/def.h"
+
+#include <ctype.h>
+#include <errno.h>
+#include <stdlib.h>
+#include <string.h>
+#include "google/protobuf/descriptor.upb.h"
+
+#include "upb/port_def.inc"
+
+typedef struct {
+ size_t len;
+ char str[1]; /* Null-terminated string data follows. */
+} str_t;
+
+static str_t *newstr(upb_alloc *alloc, const char *data, size_t len) {
+ str_t *ret = upb_malloc(alloc, sizeof(*ret) + len);
+ if (!ret) return NULL;
+ ret->len = len;
+ memcpy(ret->str, data, len);
+ ret->str[len] = '\0';
+ return ret;
+}
+
+struct upb_fielddef {
+ const upb_filedef *file;
+ const upb_msgdef *msgdef;
+ const char *full_name;
+ union {
+ int64_t sint;
+ uint64_t uint;
+ double dbl;
+ float flt;
+ bool boolean;
+ str_t *str;
+ } defaultval;
+ const upb_oneofdef *oneof;
+ union {
+ const upb_msgdef *msgdef;
+ const upb_enumdef *enumdef;
+ const google_protobuf_FieldDescriptorProto *unresolved;
+ } sub;
+ uint32_t number_;
+ uint32_t index_;
+ uint32_t selector_base; /* Used to index into a upb::Handlers table. */
+ bool is_extension_;
+ bool lazy_;
+ bool packed_;
+ upb_descriptortype_t type_;
+ upb_label_t label_;
+};
+
+struct upb_msgdef {
+ const upb_filedef *file;
+ const char *full_name;
+ uint32_t selector_count;
+ uint32_t submsg_field_count;
+
+ /* Tables for looking up fields by number and name. */
+ upb_inttable itof;
+ upb_strtable ntof;
+
+ const upb_fielddef *fields;
+ const upb_oneofdef *oneofs;
+ int field_count;
+ int oneof_count;
+
+ /* Is this a map-entry message? */
+ bool map_entry;
+ upb_wellknowntype_t well_known_type;
+
+ /* TODO(haberman): proper extension ranges (there can be multiple). */
+};
+
+struct upb_enumdef {
+ const upb_filedef *file;
+ const char *full_name;
+ upb_strtable ntoi;
+ upb_inttable iton;
+ int32_t defaultval;
+};
+
+struct upb_oneofdef {
+ const upb_msgdef *parent;
+ const char *full_name;
+ uint32_t index;
+ upb_strtable ntof;
+ upb_inttable itof;
+};
+
+struct upb_filedef {
+ const char *name;
+ const char *package;
+ const char *phpprefix;
+ const char *phpnamespace;
+ upb_syntax_t syntax;
+
+ const upb_filedef **deps;
+ const upb_msgdef *msgs;
+ const upb_enumdef *enums;
+ const upb_fielddef *exts;
+
+ int dep_count;
+ int msg_count;
+ int enum_count;
+ int ext_count;
+};
+
+struct upb_symtab {
+ upb_arena *arena;
+ upb_strtable syms; /* full_name -> packed def ptr */
+ upb_strtable files; /* file_name -> upb_filedef* */
+};
+
+/* Inside a symtab we store tagged pointers to specific def types. */
+typedef enum {
+ UPB_DEFTYPE_MSG = 0,
+ UPB_DEFTYPE_ENUM = 1,
+ UPB_DEFTYPE_FIELD = 2,
+ UPB_DEFTYPE_ONEOF = 3
+} upb_deftype_t;
+
+static const void *unpack_def(upb_value v, upb_deftype_t type) {
+ uintptr_t num = (uintptr_t)upb_value_getconstptr(v);
+ return (num & 3) == type ? (const void*)(num & ~3) : NULL;
+}
+
+static upb_value pack_def(const void *ptr, upb_deftype_t type) {
+ uintptr_t num = (uintptr_t)ptr | type;
+ return upb_value_constptr((const void*)num);
+}
+
+/* isalpha() etc. from <ctype.h> are locale-dependent, which we don't want. */
+static bool upb_isbetween(char c, char low, char high) {
+ return c >= low && c <= high;
+}
+
+static bool upb_isletter(char c) {
+ return upb_isbetween(c, 'A', 'Z') || upb_isbetween(c, 'a', 'z') || c == '_';
+}
+
+static bool upb_isalphanum(char c) {
+ return upb_isletter(c) || upb_isbetween(c, '0', '9');
+}
+
+static bool upb_isident(upb_strview name, bool full, upb_status *s) {
+ const char *str = name.data;
+ size_t len = name.size;
+ bool start = true;
+ size_t i;
+ for (i = 0; i < len; i++) {
+ char c = str[i];
+ if (c == '.') {
+ if (start || !full) {
+ upb_status_seterrf(s, "invalid name: unexpected '.' (%s)", str);
+ return false;
+ }
+ start = true;
+ } else if (start) {
+ if (!upb_isletter(c)) {
+ upb_status_seterrf(
+ s, "invalid name: path components must start with a letter (%s)",
+ str);
+ return false;
+ }
+ start = false;
+ } else {
+ if (!upb_isalphanum(c)) {
+ upb_status_seterrf(s, "invalid name: non-alphanumeric character (%s)",
+ str);
+ return false;
+ }
+ }
+ }
+ return !start;
+}
+
+static const char *shortdefname(const char *fullname) {
+ const char *p;
+
+ if (fullname == NULL) {
+ return NULL;
+ } else if ((p = strrchr(fullname, '.')) == NULL) {
+ /* No '.' in the name, return the full string. */
+ return fullname;
+ } else {
+ /* Return one past the last '.'. */
+ return p + 1;
+ }
+}
+
+/* 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);
+}
+
+/* A few implementation details of handlers. We put these here to avoid
+ * a def -> handlers dependency. */
+
+#define UPB_STATIC_SELECTOR_COUNT 3 /* Warning: also in upb/handlers.h. */
+
+static uint32_t upb_handlers_selectorbaseoffset(const upb_fielddef *f) {
+ return upb_fielddef_isseq(f) ? 2 : 0;
+}
+
+static uint32_t upb_handlers_selectorcount(const upb_fielddef *f) {
+ uint32_t ret = 1;
+ if (upb_fielddef_isseq(f)) ret += 2; /* STARTSEQ/ENDSEQ */
+ if (upb_fielddef_isstring(f)) ret += 2; /* [STRING]/STARTSTR/ENDSTR */
+ if (upb_fielddef_issubmsg(f)) {
+ /* ENDSUBMSG (STARTSUBMSG is at table beginning) */
+ ret += 0;
+ if (upb_fielddef_lazy(f)) {
+ /* STARTSTR/ENDSTR/STRING (for lazy) */
+ ret += 3;
+ }
+ }
+ return ret;
+}
+
+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_status_setoom(s);
+ return false;
+ }
+
+ m->submsg_field_count = 0;
+ for(i = 0, upb_msg_field_begin(&j, m);
+ !upb_msg_field_done(&j);
+ upb_msg_field_next(&j), i++) {
+ upb_fielddef *f = upb_msg_iter_field(&j);
+ UPB_ASSERT(f->msgdef == m);
+ if (upb_fielddef_issubmsg(f)) {
+ m->submsg_field_count++;
+ }
+ fields[i] = f;
+ }
+
+ qsort(fields, n, sizeof(*fields), cmp_fields);
+
+ selector = UPB_STATIC_SELECTOR_COUNT + m->submsg_field_count;
+ for (i = 0; i < n; i++) {
+ upb_fielddef *f = fields[i];
+ f->index_ = i;
+ f->selector_base = selector + upb_handlers_selectorbaseoffset(f);
+ selector += upb_handlers_selectorcount(f);
+ }
+ m->selector_count = selector;
+
+ for(upb_msg_oneof_begin(&k, m), i = 0;
+ !upb_msg_oneof_done(&k);
+ upb_msg_oneof_next(&k), i++) {
+ upb_oneofdef *o = (upb_oneofdef*)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.FieldMask")) {
+ m->well_known_type = UPB_WELLKNOWN_FIELDMASK;
+ } 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;
+ }
+}
+
+
+/* upb_enumdef ****************************************************************/
+
+const char *upb_enumdef_fullname(const upb_enumdef *e) {
+ return e->full_name;
+}
+
+const char *upb_enumdef_name(const upb_enumdef *e) {
+ return shortdefname(e->full_name);
+}
+
+const upb_filedef *upb_enumdef_file(const upb_enumdef *e) {
+ return e->file;
+}
+
+int32_t upb_enumdef_default(const upb_enumdef *e) {
+ UPB_ASSERT(upb_enumdef_iton(e, e->defaultval));
+ return e->defaultval;
+}
+
+int upb_enumdef_numvals(const upb_enumdef *e) {
+ return upb_strtable_count(&e->ntoi);
+}
+
+void upb_enum_begin(upb_enum_iter *i, const upb_enumdef *e) {
+ /* We iterate over the ntoi table, to account for duplicate numbers. */
+ upb_strtable_begin(i, &e->ntoi);
+}
+
+void upb_enum_next(upb_enum_iter *iter) { upb_strtable_next(iter); }
+bool upb_enum_done(upb_enum_iter *iter) { return upb_strtable_done(iter); }
+
+bool upb_enumdef_ntoi(const upb_enumdef *def, const char *name,
+ size_t len, int32_t *num) {
+ upb_value v;
+ if (!upb_strtable_lookup2(&def->ntoi, name, len, &v)) {
+ return false;
+ }
+ if (num) *num = upb_value_getint32(v);
+ return true;
+}
+
+const char *upb_enumdef_iton(const upb_enumdef *def, int32_t num) {
+ upb_value v;
+ return upb_inttable_lookup32(&def->iton, num, &v) ?
+ upb_value_getcstr(v) : NULL;
+}
+
+const char *upb_enum_iter_name(upb_enum_iter *iter) {
+ return upb_strtable_iter_key(iter);
+}
+
+int32_t upb_enum_iter_number(upb_enum_iter *iter) {
+ return upb_value_getint32(upb_strtable_iter_value(iter));
+}
+
+
+/* upb_fielddef ***************************************************************/
+
+const char *upb_fielddef_fullname(const upb_fielddef *f) {
+ return f->full_name;
+}
+
+upb_fieldtype_t upb_fielddef_type(const upb_fielddef *f) {
+ switch (f->type_) {
+ case UPB_DESCRIPTOR_TYPE_DOUBLE:
+ return UPB_TYPE_DOUBLE;
+ case UPB_DESCRIPTOR_TYPE_FLOAT:
+ return UPB_TYPE_FLOAT;
+ case UPB_DESCRIPTOR_TYPE_INT64:
+ case UPB_DESCRIPTOR_TYPE_SINT64:
+ case UPB_DESCRIPTOR_TYPE_SFIXED64:
+ return UPB_TYPE_INT64;
+ case UPB_DESCRIPTOR_TYPE_INT32:
+ case UPB_DESCRIPTOR_TYPE_SFIXED32:
+ case UPB_DESCRIPTOR_TYPE_SINT32:
+ return UPB_TYPE_INT32;
+ case UPB_DESCRIPTOR_TYPE_UINT64:
+ case UPB_DESCRIPTOR_TYPE_FIXED64:
+ return UPB_TYPE_UINT64;
+ case UPB_DESCRIPTOR_TYPE_UINT32:
+ case UPB_DESCRIPTOR_TYPE_FIXED32:
+ return UPB_TYPE_UINT32;
+ case UPB_DESCRIPTOR_TYPE_ENUM:
+ return UPB_TYPE_ENUM;
+ case UPB_DESCRIPTOR_TYPE_BOOL:
+ return UPB_TYPE_BOOL;
+ case UPB_DESCRIPTOR_TYPE_STRING:
+ return UPB_TYPE_STRING;
+ case UPB_DESCRIPTOR_TYPE_BYTES:
+ return UPB_TYPE_BYTES;
+ case UPB_DESCRIPTOR_TYPE_GROUP:
+ case UPB_DESCRIPTOR_TYPE_MESSAGE:
+ return UPB_TYPE_MESSAGE;
+ }
+ UPB_UNREACHABLE();
+}
+
+upb_descriptortype_t upb_fielddef_descriptortype(const upb_fielddef *f) {
+ return f->type_;
+}
+
+uint32_t upb_fielddef_index(const upb_fielddef *f) {
+ return f->index_;
+}
+
+upb_label_t upb_fielddef_label(const upb_fielddef *f) {
+ return f->label_;
+}
+
+uint32_t upb_fielddef_number(const upb_fielddef *f) {
+ return f->number_;
+}
+
+bool upb_fielddef_isextension(const upb_fielddef *f) {
+ return f->is_extension_;
+}
+
+bool upb_fielddef_lazy(const upb_fielddef *f) {
+ return f->lazy_;
+}
+
+bool upb_fielddef_packed(const upb_fielddef *f) {
+ return f->packed_;
+}
+
+const char *upb_fielddef_name(const upb_fielddef *f) {
+ return shortdefname(f->full_name);
+}
+
+uint32_t upb_fielddef_selectorbase(const upb_fielddef *f) {
+ return f->selector_base;
+}
+
+size_t upb_fielddef_getjsonname(const upb_fielddef *f, char *buf, size_t len) {
+ const char *name = upb_fielddef_name(f);
+ size_t src, dst = 0;
+ bool ucase_next = false;
+
+#define WRITE(byte) \
+ ++dst; \
+ if (dst < len) buf[dst - 1] = byte; \
+ else if (dst == len) buf[dst - 1] = '\0'
+
+ if (!name) {
+ WRITE('\0');
+ return 0;
+ }
+
+ /* Implement the transformation as described in the spec:
+ * 1. upper case all letters after an underscore.
+ * 2. remove all underscores.
+ */
+ for (src = 0; name[src]; src++) {
+ if (name[src] == '_') {
+ ucase_next = true;
+ continue;
+ }
+
+ if (ucase_next) {
+ WRITE(toupper(name[src]));
+ ucase_next = false;
+ } else {
+ WRITE(name[src]);
+ }
+ }
+
+ WRITE('\0');
+ return dst;
+
+#undef WRITE
+}
+
+const upb_msgdef *upb_fielddef_containingtype(const upb_fielddef *f) {
+ return f->msgdef;
+}
+
+const upb_oneofdef *upb_fielddef_containingoneof(const upb_fielddef *f) {
+ return f->oneof;
+}
+
+static void chkdefaulttype(const upb_fielddef *f, int ctype) {
+ UPB_UNUSED(f);
+ UPB_UNUSED(ctype);
+}
+
+int64_t upb_fielddef_defaultint64(const upb_fielddef *f) {
+ chkdefaulttype(f, UPB_TYPE_INT64);
+ return f->defaultval.sint;
+}
+
+int32_t upb_fielddef_defaultint32(const upb_fielddef *f) {
+ chkdefaulttype(f, UPB_TYPE_INT32);
+ return f->defaultval.sint;
+}
+
+uint64_t upb_fielddef_defaultuint64(const upb_fielddef *f) {
+ chkdefaulttype(f, UPB_TYPE_UINT64);
+ return f->defaultval.uint;
+}
+
+uint32_t upb_fielddef_defaultuint32(const upb_fielddef *f) {
+ chkdefaulttype(f, UPB_TYPE_UINT32);
+ return f->defaultval.uint;
+}
+
+bool upb_fielddef_defaultbool(const upb_fielddef *f) {
+ chkdefaulttype(f, UPB_TYPE_BOOL);
+ return f->defaultval.boolean;
+}
+
+float upb_fielddef_defaultfloat(const upb_fielddef *f) {
+ chkdefaulttype(f, UPB_TYPE_FLOAT);
+ return f->defaultval.flt;
+}
+
+double upb_fielddef_defaultdouble(const upb_fielddef *f) {
+ chkdefaulttype(f, UPB_TYPE_DOUBLE);
+ return f->defaultval.dbl;
+}
+
+const char *upb_fielddef_defaultstr(const upb_fielddef *f, size_t *len) {
+ str_t *str = f->defaultval.str;
+ UPB_ASSERT(upb_fielddef_type(f) == UPB_TYPE_STRING ||
+ upb_fielddef_type(f) == UPB_TYPE_BYTES ||
+ upb_fielddef_type(f) == UPB_TYPE_ENUM);
+ if (str) {
+ if (len) *len = str->len;
+ return str->str;
+ } else {
+ if (len) *len = 0;
+ return NULL;
+ }
+}
+
+const upb_msgdef *upb_fielddef_msgsubdef(const upb_fielddef *f) {
+ UPB_ASSERT(upb_fielddef_type(f) == UPB_TYPE_MESSAGE);
+ return f->sub.msgdef;
+}
+
+const upb_enumdef *upb_fielddef_enumsubdef(const upb_fielddef *f) {
+ UPB_ASSERT(upb_fielddef_type(f) == UPB_TYPE_ENUM);
+ return f->sub.enumdef;
+}
+
+bool upb_fielddef_issubmsg(const upb_fielddef *f) {
+ return upb_fielddef_type(f) == UPB_TYPE_MESSAGE;
+}
+
+bool upb_fielddef_isstring(const upb_fielddef *f) {
+ return upb_fielddef_type(f) == UPB_TYPE_STRING ||
+ upb_fielddef_type(f) == UPB_TYPE_BYTES;
+}
+
+bool upb_fielddef_isseq(const upb_fielddef *f) {
+ return upb_fielddef_label(f) == UPB_LABEL_REPEATED;
+}
+
+bool upb_fielddef_isprimitive(const upb_fielddef *f) {
+ return !upb_fielddef_isstring(f) && !upb_fielddef_issubmsg(f);
+}
+
+bool upb_fielddef_ismap(const upb_fielddef *f) {
+ return upb_fielddef_isseq(f) && upb_fielddef_issubmsg(f) &&
+ upb_msgdef_mapentry(upb_fielddef_msgsubdef(f));
+}
+
+bool upb_fielddef_hassubdef(const upb_fielddef *f) {
+ return upb_fielddef_issubmsg(f) || upb_fielddef_type(f) == UPB_TYPE_ENUM;
+}
+
+bool upb_fielddef_haspresence(const upb_fielddef *f) {
+ if (upb_fielddef_isseq(f)) return false;
+ if (upb_fielddef_issubmsg(f)) return true;
+ return f->file->syntax == UPB_SYNTAX_PROTO2;
+}
+
+static bool between(int32_t x, int32_t low, int32_t high) {
+ return x >= low && x <= high;
+}
+
+bool upb_fielddef_checklabel(int32_t label) { return between(label, 1, 3); }
+bool upb_fielddef_checktype(int32_t type) { return between(type, 1, 11); }
+bool upb_fielddef_checkintfmt(int32_t fmt) { return between(fmt, 1, 3); }
+
+bool upb_fielddef_checkdescriptortype(int32_t type) {
+ return between(type, 1, 18);
+}
+
+/* upb_msgdef *****************************************************************/
+
+const char *upb_msgdef_fullname(const upb_msgdef *m) {
+ return m->full_name;
+}
+
+const upb_filedef *upb_msgdef_file(const upb_msgdef *m) {
+ return m->file;
+}
+
+const char *upb_msgdef_name(const upb_msgdef *m) {
+ return shortdefname(m->full_name);
+}
+
+upb_syntax_t upb_msgdef_syntax(const upb_msgdef *m) {
+ return m->file->syntax;
+}
+
+size_t upb_msgdef_selectorcount(const upb_msgdef *m) {
+ return m->selector_count;
+}
+
+uint32_t upb_msgdef_submsgfieldcount(const upb_msgdef *m) {
+ return m->submsg_field_count;
+}
+
+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_getconstptr(val) : NULL;
+}
+
+const upb_fielddef *upb_msgdef_ntof(const upb_msgdef *m, const char *name,
+ size_t len) {
+ upb_value val;
+
+ if (!upb_strtable_lookup2(&m->ntof, name, len, &val)) {
+ return NULL;
+ }
+
+ return unpack_def(val, UPB_DEFTYPE_FIELD);
+}
+
+const upb_oneofdef *upb_msgdef_ntoo(const upb_msgdef *m, const char *name,
+ size_t len) {
+ upb_value val;
+
+ if (!upb_strtable_lookup2(&m->ntof, name, len, &val)) {
+ return NULL;
+ }
+
+ return unpack_def(val, UPB_DEFTYPE_ONEOF);
+}
+
+bool upb_msgdef_lookupname(const upb_msgdef *m, const char *name, size_t len,
+ const upb_fielddef **f, const upb_oneofdef **o) {
+ upb_value val;
+
+ if (!upb_strtable_lookup2(&m->ntof, name, len, &val)) {
+ return false;
+ }
+
+ *o = unpack_def(val, UPB_DEFTYPE_ONEOF);
+ *f = unpack_def(val, UPB_DEFTYPE_FIELD);
+ UPB_ASSERT((*o != NULL) ^ (*f != NULL)); /* Exactly one of the two should be set. */
+ return true;
+}
+
+int upb_msgdef_numfields(const upb_msgdef *m) {
+ /* The number table contains only fields. */
+ return upb_inttable_count(&m->itof);
+}
+
+int upb_msgdef_numoneofs(const upb_msgdef *m) {
+ /* The name table includes oneofs, and the number table does not. */
+ return upb_strtable_count(&m->ntof) - upb_inttable_count(&m->itof);
+}
+
+bool upb_msgdef_mapentry(const upb_msgdef *m) {
+ return m->map_entry;
+}
+
+upb_wellknowntype_t upb_msgdef_wellknowntype(const upb_msgdef *m) {
+ return m->well_known_type;
+}
+
+bool upb_msgdef_isnumberwrapper(const upb_msgdef *m) {
+ upb_wellknowntype_t type = upb_msgdef_wellknowntype(m);
+ return type >= UPB_WELLKNOWN_DOUBLEVALUE &&
+ type <= UPB_WELLKNOWN_UINT32VALUE;
+}
+
+void upb_msg_field_begin(upb_msg_field_iter *iter, const upb_msgdef *m) {
+ upb_inttable_begin(iter, &m->itof);
+}
+
+void upb_msg_field_next(upb_msg_field_iter *iter) { upb_inttable_next(iter); }
+
+bool upb_msg_field_done(const upb_msg_field_iter *iter) {
+ return upb_inttable_done(iter);
+}
+
+upb_fielddef *upb_msg_iter_field(const upb_msg_field_iter *iter) {
+ return (upb_fielddef *)upb_value_getconstptr(upb_inttable_iter_value(iter));
+}
+
+void upb_msg_field_iter_setdone(upb_msg_field_iter *iter) {
+ upb_inttable_iter_setdone(iter);
+}
+
+bool upb_msg_field_iter_isequal(const upb_msg_field_iter * iter1,
+ const upb_msg_field_iter * iter2) {
+ return upb_inttable_iter_isequal(iter1, iter2);
+}
+
+void upb_msg_oneof_begin(upb_msg_oneof_iter *iter, const upb_msgdef *m) {
+ upb_strtable_begin(iter, &m->ntof);
+ /* We need to skip past any initial fields. */
+ while (!upb_strtable_done(iter) &&
+ !unpack_def(upb_strtable_iter_value(iter), UPB_DEFTYPE_ONEOF)) {
+ upb_strtable_next(iter);
+ }
+}
+
+void upb_msg_oneof_next(upb_msg_oneof_iter *iter) {
+ /* We need to skip past fields to return only oneofs. */
+ do {
+ upb_strtable_next(iter);
+ } while (!upb_strtable_done(iter) &&
+ !unpack_def(upb_strtable_iter_value(iter), UPB_DEFTYPE_ONEOF));
+}
+
+bool upb_msg_oneof_done(const upb_msg_oneof_iter *iter) {
+ return upb_strtable_done(iter);
+}
+
+const upb_oneofdef *upb_msg_iter_oneof(const upb_msg_oneof_iter *iter) {
+ return unpack_def(upb_strtable_iter_value(iter), UPB_DEFTYPE_ONEOF);
+}
+
+void upb_msg_oneof_iter_setdone(upb_msg_oneof_iter *iter) {
+ upb_strtable_iter_setdone(iter);
+}
+
+bool upb_msg_oneof_iter_isequal(const upb_msg_oneof_iter *iter1,
+ const upb_msg_oneof_iter *iter2) {
+ return upb_strtable_iter_isequal(iter1, iter2);
+}
+
+/* upb_oneofdef ***************************************************************/
+
+const char *upb_oneofdef_name(const upb_oneofdef *o) {
+ return shortdefname(o->full_name);
+}
+
+const upb_msgdef *upb_oneofdef_containingtype(const upb_oneofdef *o) {
+ return o->parent;
+}
+
+int upb_oneofdef_numfields(const upb_oneofdef *o) {
+ return upb_strtable_count(&o->ntof);
+}
+
+uint32_t upb_oneofdef_index(const upb_oneofdef *o) {
+ return o->index;
+}
+
+const upb_fielddef *upb_oneofdef_ntof(const upb_oneofdef *o,
+ const char *name, size_t length) {
+ upb_value val;
+ return upb_strtable_lookup2(&o->ntof, name, length, &val) ?
+ upb_value_getptr(val) : NULL;
+}
+
+const upb_fielddef *upb_oneofdef_itof(const upb_oneofdef *o, uint32_t num) {
+ upb_value val;
+ return upb_inttable_lookup32(&o->itof, num, &val) ?
+ upb_value_getptr(val) : NULL;
+}
+
+void upb_oneof_begin(upb_oneof_iter *iter, const upb_oneofdef *o) {
+ upb_inttable_begin(iter, &o->itof);
+}
+
+void upb_oneof_next(upb_oneof_iter *iter) {
+ upb_inttable_next(iter);
+}
+
+bool upb_oneof_done(upb_oneof_iter *iter) {
+ return upb_inttable_done(iter);
+}
+
+upb_fielddef *upb_oneof_iter_field(const upb_oneof_iter *iter) {
+ return (upb_fielddef *)upb_value_getconstptr(upb_inttable_iter_value(iter));
+}
+
+void upb_oneof_iter_setdone(upb_oneof_iter *iter) {
+ upb_inttable_iter_setdone(iter);
+}
+
+/* Code to build defs from descriptor protos. *********************************/
+
+/* There is a question of how much validation to do here. It will be difficult
+ * to perfectly match the amount of validation performed by proto2. But since
+ * this code is used to directly build defs from Ruby (for example) we do need
+ * to validate important constraints like uniqueness of names and numbers. */
+
+#define CHK(x) if (!(x)) { return false; }
+#define CHK_OOM(x) if (!(x)) { upb_status_setoom(ctx->status); return false; }
+
+typedef struct {
+ const upb_symtab *symtab;
+ upb_filedef *file; /* File we are building. */
+ upb_alloc *alloc; /* Allocate defs here. */
+ upb_alloc *tmp; /* Alloc for addtab and any other tmp data. */
+ upb_strtable *addtab; /* full_name -> packed def ptr for new defs. */
+ upb_status *status; /* Record errors here. */
+} symtab_addctx;
+
+static char* strviewdup(const symtab_addctx *ctx, upb_strview view) {
+ return upb_strdup2(view.data, view.size, ctx->alloc);
+}
+
+static bool streql2(const char *a, size_t n, const char *b) {
+ return n == strlen(b) && memcmp(a, b, n) == 0;
+}
+
+static bool streql_view(upb_strview view, const char *b) {
+ return streql2(view.data, view.size, b);
+}
+
+static const char *makefullname(const symtab_addctx *ctx, const char *prefix,
+ upb_strview name) {
+ if (prefix) {
+ /* ret = prefix + '.' + name; */
+ size_t n = strlen(prefix);
+ char *ret = upb_malloc(ctx->alloc, n + name.size + 2);
+ CHK_OOM(ret);
+ strcpy(ret, prefix);
+ ret[n] = '.';
+ memcpy(&ret[n + 1], name.data, name.size);
+ ret[n + 1 + name.size] = '\0';
+ return ret;
+ } else {
+ return strviewdup(ctx, name);
+ }
+}
+
+static bool symtab_add(const symtab_addctx *ctx, const char *name,
+ upb_value v) {
+ upb_value tmp;
+ if (upb_strtable_lookup(ctx->addtab, name, &tmp) ||
+ upb_strtable_lookup(&ctx->symtab->syms, name, &tmp)) {
+ upb_status_seterrf(ctx->status, "duplicate symbol '%s'", name);
+ return false;
+ }
+
+ CHK_OOM(upb_strtable_insert3(ctx->addtab, name, strlen(name), v, ctx->tmp));
+ return true;
+}
+
+/* Given a symbol and the base symbol inside which it is defined, find the
+ * symbol's definition in t. */
+static bool resolvename(const upb_strtable *t, const upb_fielddef *f,
+ const char *base, upb_strview sym,
+ upb_deftype_t type, upb_status *status,
+ const void **def) {
+ if(sym.size == 0) return NULL;
+ if(sym.data[0] == '.') {
+ /* Symbols starting with '.' are absolute, so we do a single lookup.
+ * Slice to omit the leading '.' */
+ upb_value v;
+ if (!upb_strtable_lookup2(t, sym.data + 1, sym.size - 1, &v)) {
+ return false;
+ }
+
+ *def = unpack_def(v, type);
+
+ if (!*def) {
+ upb_status_seterrf(status,
+ "type mismatch when resolving field %s, name %s",
+ f->full_name, sym.data);
+ return false;
+ }
+
+ return true;
+ } else {
+ /* Remove components from base until we find an entry or run out.
+ * TODO: This branch is totally broken, but currently not used. */
+ (void)base;
+ UPB_ASSERT(false);
+ return false;
+ }
+}
+
+const void *symtab_resolve(const symtab_addctx *ctx, const upb_fielddef *f,
+ const char *base, upb_strview sym,
+ upb_deftype_t type) {
+ const void *ret;
+ if (!resolvename(ctx->addtab, f, base, sym, type, ctx->status, &ret) &&
+ !resolvename(&ctx->symtab->syms, f, base, sym, type, ctx->status, &ret)) {
+ if (upb_ok(ctx->status)) {
+ upb_status_seterrf(ctx->status, "couldn't resolve name '%s'", sym.data);
+ }
+ return false;
+ }
+ return ret;
+}
+
+static bool create_oneofdef(
+ const symtab_addctx *ctx, upb_msgdef *m,
+ const google_protobuf_OneofDescriptorProto *oneof_proto) {
+ upb_oneofdef *o;
+ upb_strview name = google_protobuf_OneofDescriptorProto_name(oneof_proto);
+ upb_value v;
+
+ o = (upb_oneofdef*)&m->oneofs[m->oneof_count++];
+ o->parent = m;
+ o->full_name = makefullname(ctx, m->full_name, name);
+
+ v = pack_def(o, UPB_DEFTYPE_ONEOF);
+ CHK_OOM(symtab_add(ctx, o->full_name, v));
+ CHK_OOM(upb_strtable_insert3(&m->ntof, name.data, name.size, v, ctx->alloc));
+
+ CHK_OOM(upb_inttable_init2(&o->itof, UPB_CTYPE_CONSTPTR, ctx->alloc));
+ CHK_OOM(upb_strtable_init2(&o->ntof, UPB_CTYPE_CONSTPTR, ctx->alloc));
+
+ return true;
+}
+
+static bool parse_default(const symtab_addctx *ctx, const char *str, size_t len,
+ upb_fielddef *f) {
+ char *end;
+ char nullz[64];
+ errno = 0;
+
+ switch (upb_fielddef_type(f)) {
+ case UPB_TYPE_INT32:
+ case UPB_TYPE_INT64:
+ case UPB_TYPE_UINT32:
+ case UPB_TYPE_UINT64:
+ case UPB_TYPE_DOUBLE:
+ case UPB_TYPE_FLOAT:
+ /* Standard C number parsing functions expect null-terminated strings. */
+ if (len >= sizeof(nullz) - 1) {
+ return false;
+ }
+ memcpy(nullz, str, len);
+ nullz[len] = '\0';
+ str = nullz;
+ break;
+ default:
+ break;
+ }
+
+ switch (upb_fielddef_type(f)) {
+ case UPB_TYPE_INT32: {
+ long val = strtol(str, &end, 0);
+ CHK(val <= INT32_MAX && val >= INT32_MIN && errno != ERANGE && !*end);
+ f->defaultval.sint = val;
+ break;
+ }
+ case UPB_TYPE_ENUM: {
+ const upb_enumdef *e = f->sub.enumdef;
+ int32_t val;
+ CHK(upb_enumdef_ntoi(e, str, len, &val));
+ f->defaultval.sint = val;
+ break;
+ }
+ case UPB_TYPE_INT64: {
+ /* XXX: Need to write our own strtoll, since it's not available in c89. */
+ long long val = strtol(str, &end, 0);
+ CHK(val <= INT64_MAX && val >= INT64_MIN && errno != ERANGE && !*end);
+ f->defaultval.sint = val;
+ break;
+ }
+ case UPB_TYPE_UINT32: {
+ unsigned long val = strtoul(str, &end, 0);
+ CHK(val <= UINT32_MAX && errno != ERANGE && !*end);
+ f->defaultval.uint = val;
+ break;
+ }
+ case UPB_TYPE_UINT64: {
+ /* XXX: Need to write our own strtoull, since it's not available in c89. */
+ unsigned long long val = strtoul(str, &end, 0);
+ CHK(val <= UINT64_MAX && errno != ERANGE && !*end);
+ f->defaultval.uint = val;
+ break;
+ }
+ case UPB_TYPE_DOUBLE: {
+ double val = strtod(str, &end);
+ CHK(errno != ERANGE && !*end);
+ f->defaultval.dbl = val;
+ break;
+ }
+ case UPB_TYPE_FLOAT: {
+ /* XXX: Need to write our own strtof, since it's not available in c89. */
+ float val = strtod(str, &end);
+ CHK(errno != ERANGE && !*end);
+ f->defaultval.flt = val;
+ break;
+ }
+ case UPB_TYPE_BOOL: {
+ if (streql2(str, len, "false")) {
+ f->defaultval.boolean = false;
+ } else if (streql2(str, len, "true")) {
+ f->defaultval.boolean = true;
+ } else {
+ return false;
+ }
+ }
+ case UPB_TYPE_STRING:
+ f->defaultval.str = newstr(ctx->alloc, str, len);
+ break;
+ case UPB_TYPE_BYTES:
+ /* XXX: need to interpret the C-escaped value. */
+ f->defaultval.str = newstr(ctx->alloc, str, len);
+ break;
+ case UPB_TYPE_MESSAGE:
+ /* Should not have a default value. */
+ return false;
+ }
+ return true;
+}
+
+static void set_default_default(const symtab_addctx *ctx, upb_fielddef *f) {
+ switch (upb_fielddef_type(f)) {
+ case UPB_TYPE_INT32:
+ case UPB_TYPE_INT64:
+ case UPB_TYPE_ENUM:
+ f->defaultval.sint = 0;
+ break;
+ case UPB_TYPE_UINT64:
+ case UPB_TYPE_UINT32:
+ f->defaultval.uint = 0;
+ break;
+ case UPB_TYPE_DOUBLE:
+ case UPB_TYPE_FLOAT:
+ f->defaultval.dbl = 0;
+ break;
+ case UPB_TYPE_STRING:
+ case UPB_TYPE_BYTES:
+ f->defaultval.str = newstr(ctx->alloc, NULL, 0);
+ break;
+ case UPB_TYPE_BOOL:
+ f->defaultval.boolean = false;
+ break;
+ case UPB_TYPE_MESSAGE:
+ break;
+ }
+}
+
+static bool create_fielddef(
+ const symtab_addctx *ctx, const char *prefix, upb_msgdef *m,
+ const google_protobuf_FieldDescriptorProto *field_proto) {
+ upb_alloc *alloc = ctx->alloc;
+ upb_fielddef *f;
+ const google_protobuf_FieldOptions *options;
+ upb_strview name;
+ const char *full_name;
+ const char *shortname;
+ uint32_t field_number;
+
+ if (!google_protobuf_FieldDescriptorProto_has_name(field_proto)) {
+ upb_status_seterrmsg(ctx->status, "field has no name");
+ return false;
+ }
+
+ name = google_protobuf_FieldDescriptorProto_name(field_proto);
+ CHK(upb_isident(name, false, ctx->status));
+ full_name = makefullname(ctx, prefix, name);
+ shortname = shortdefname(full_name);
+
+ field_number = google_protobuf_FieldDescriptorProto_number(field_proto);
+
+ if (field_number == 0 || field_number > UPB_MAX_FIELDNUMBER) {
+ upb_status_seterrf(ctx->status, "invalid field number (%u)", field_number);
+ return false;
+ }
+
+ if (m) {
+ /* direct message field. */
+ upb_value v, packed_v;
+
+ f = (upb_fielddef*)&m->fields[m->field_count++];
+ f->msgdef = m;
+ f->is_extension_ = false;
+
+ packed_v = pack_def(f, UPB_DEFTYPE_FIELD);
+ v = upb_value_constptr(f);
+
+ if (!upb_strtable_insert3(&m->ntof, name.data, name.size, packed_v, alloc)) {
+ upb_status_seterrf(ctx->status, "duplicate field name (%s)", shortname);
+ return false;
+ }
+
+ if (!upb_inttable_insert2(&m->itof, field_number, v, alloc)) {
+ upb_status_seterrf(ctx->status, "duplicate field number (%u)",
+ field_number);
+ return false;
+ }
+ } else {
+ /* extension field. */
+ f = (upb_fielddef*)&ctx->file->exts[ctx->file->ext_count];
+ f->is_extension_ = true;
+ CHK_OOM(symtab_add(ctx, full_name, pack_def(f, UPB_DEFTYPE_FIELD)));
+ }
+
+ f->full_name = full_name;
+ f->file = ctx->file;
+ f->type_ = (int)google_protobuf_FieldDescriptorProto_type(field_proto);
+ f->label_ = (int)google_protobuf_FieldDescriptorProto_label(field_proto);
+ f->number_ = field_number;
+ f->oneof = NULL;
+
+ /* We can't resolve the subdef or (in the case of extensions) the containing
+ * message yet, because it may not have been defined yet. We stash a pointer
+ * to the field_proto until later when we can properly resolve it. */
+ f->sub.unresolved = field_proto;
+
+ if (f->label_ == UPB_LABEL_REQUIRED && f->file->syntax == UPB_SYNTAX_PROTO3) {
+ upb_status_seterrf(ctx->status, "proto3 fields cannot be required (%s)",
+ f->full_name);
+ return false;
+ }
+
+ if (google_protobuf_FieldDescriptorProto_has_oneof_index(field_proto)) {
+ int oneof_index =
+ google_protobuf_FieldDescriptorProto_oneof_index(field_proto);
+ upb_oneofdef *oneof;
+ upb_value v = upb_value_constptr(f);
+
+ if (upb_fielddef_label(f) != UPB_LABEL_OPTIONAL) {
+ upb_status_seterrf(ctx->status,
+ "fields in oneof must have OPTIONAL label (%s)",
+ f->full_name);
+ return false;
+ }
+
+ if (!m) {
+ upb_status_seterrf(ctx->status,
+ "oneof_index provided for extension field (%s)",
+ f->full_name);
+ return false;
+ }
+
+ if (oneof_index >= m->oneof_count) {
+ upb_status_seterrf(ctx->status, "oneof_index out of range (%s)",
+ f->full_name);
+ return false;
+ }
+
+ oneof = (upb_oneofdef*)&m->oneofs[oneof_index];
+ f->oneof = oneof;
+
+ CHK(upb_inttable_insert2(&oneof->itof, f->number_, v, alloc));
+ CHK(upb_strtable_insert3(&oneof->ntof, name.data, name.size, v, alloc));
+ } else {
+ f->oneof = NULL;
+ }
+
+ if (google_protobuf_FieldDescriptorProto_has_options(field_proto)) {
+ options = google_protobuf_FieldDescriptorProto_options(field_proto);
+ f->lazy_ = google_protobuf_FieldOptions_lazy(options);
+ f->packed_ = google_protobuf_FieldOptions_packed(options);
+ } else {
+ f->lazy_ = false;
+ f->packed_ = false;
+ }
+
+ return true;
+}
+
+static bool create_enumdef(
+ const symtab_addctx *ctx, const char *prefix,
+ const google_protobuf_EnumDescriptorProto *enum_proto) {
+ upb_enumdef *e;
+ const google_protobuf_EnumValueDescriptorProto *const *values;
+ upb_strview name;
+ size_t i, n;
+
+ name = google_protobuf_EnumDescriptorProto_name(enum_proto);
+ CHK(upb_isident(name, false, ctx->status));
+
+ e = (upb_enumdef*)&ctx->file->enums[ctx->file->enum_count++];
+ e->full_name = makefullname(ctx, prefix, name);
+ CHK_OOM(symtab_add(ctx, e->full_name, pack_def(e, UPB_DEFTYPE_ENUM)));
+
+ CHK_OOM(upb_strtable_init2(&e->ntoi, UPB_CTYPE_INT32, ctx->alloc));
+ CHK_OOM(upb_inttable_init2(&e->iton, UPB_CTYPE_CSTR, ctx->alloc));
+
+ e->file = ctx->file;
+ e->defaultval = 0;
+
+ values = google_protobuf_EnumDescriptorProto_value(enum_proto, &n);
+
+ if (n == 0) {
+ upb_status_seterrf(ctx->status,
+ "enums must contain at least one value (%s)",
+ e->full_name);
+ return false;
+ }
+
+ for (i = 0; i < n; i++) {
+ const google_protobuf_EnumValueDescriptorProto *value = values[i];
+ upb_strview name = google_protobuf_EnumValueDescriptorProto_name(value);
+ char *name2 = strviewdup(ctx, name);
+ int32_t num = google_protobuf_EnumValueDescriptorProto_number(value);
+ upb_value v = upb_value_int32(num);
+
+ if (i == 0 && e->file->syntax == UPB_SYNTAX_PROTO3 && num != 0) {
+ upb_status_seterrf(ctx->status,
+ "for proto3, the first enum value must be zero (%s)",
+ e->full_name);
+ return false;
+ }
+
+ if (upb_strtable_lookup(&e->ntoi, name2, NULL)) {
+ upb_status_seterrf(ctx->status, "duplicate enum label '%s'", name2);
+ return false;
+ }
+
+ CHK_OOM(name2)
+ CHK_OOM(
+ upb_strtable_insert3(&e->ntoi, name2, strlen(name2), v, ctx->alloc));
+
+ if (!upb_inttable_lookup(&e->iton, num, NULL)) {
+ upb_value v = upb_value_cstr(name2);
+ CHK_OOM(upb_inttable_insert2(&e->iton, num, v, ctx->alloc));
+ }
+ }
+
+ upb_inttable_compact2(&e->iton, ctx->alloc);
+
+ return true;
+}
+
+static bool create_msgdef(const symtab_addctx *ctx, const char *prefix,
+ const google_protobuf_DescriptorProto *msg_proto) {
+ upb_msgdef *m;
+ const google_protobuf_MessageOptions *options;
+ const google_protobuf_OneofDescriptorProto *const *oneofs;
+ const google_protobuf_FieldDescriptorProto *const *fields;
+ const google_protobuf_EnumDescriptorProto *const *enums;
+ const google_protobuf_DescriptorProto *const *msgs;
+ size_t i, n;
+ upb_strview name;
+
+ name = google_protobuf_DescriptorProto_name(msg_proto);
+ CHK(upb_isident(name, false, ctx->status));
+
+ m = (upb_msgdef*)&ctx->file->msgs[ctx->file->msg_count++];
+ m->full_name = makefullname(ctx, prefix, name);
+ CHK_OOM(symtab_add(ctx, m->full_name, pack_def(m, UPB_DEFTYPE_MSG)));
+
+ CHK_OOM(upb_inttable_init2(&m->itof, UPB_CTYPE_CONSTPTR, ctx->alloc));
+ CHK_OOM(upb_strtable_init2(&m->ntof, UPB_CTYPE_CONSTPTR, ctx->alloc));
+
+ m->file = ctx->file;
+ m->map_entry = false;
+
+ options = google_protobuf_DescriptorProto_options(msg_proto);
+
+ if (options) {
+ m->map_entry = google_protobuf_MessageOptions_map_entry(options);
+ }
+
+ oneofs = google_protobuf_DescriptorProto_oneof_decl(msg_proto, &n);
+ m->oneof_count = 0;
+ m->oneofs = upb_malloc(ctx->alloc, sizeof(*m->oneofs) * n);
+ for (i = 0; i < n; i++) {
+ CHK(create_oneofdef(ctx, m, oneofs[i]));
+ }
+
+ fields = google_protobuf_DescriptorProto_field(msg_proto, &n);
+ m->field_count = 0;
+ m->fields = upb_malloc(ctx->alloc, sizeof(*m->fields) * n);
+ for (i = 0; i < n; i++) {
+ CHK(create_fielddef(ctx, m->full_name, m, fields[i]));
+ }
+
+ CHK(assign_msg_indices(m, ctx->status));
+ assign_msg_wellknowntype(m);
+ upb_inttable_compact2(&m->itof, ctx->alloc);
+
+ /* This message is built. Now build nested messages and enums. */
+
+ enums = google_protobuf_DescriptorProto_enum_type(msg_proto, &n);
+ for (i = 0; i < n; i++) {
+ CHK(create_enumdef(ctx, m->full_name, enums[i]));
+ }
+
+ msgs = google_protobuf_DescriptorProto_nested_type(msg_proto, &n);
+ for (i = 0; i < n; i++) {
+ CHK(create_msgdef(ctx, m->full_name, msgs[i]));
+ }
+
+ return true;
+}
+
+typedef struct {
+ int msg_count;
+ int enum_count;
+ int ext_count;
+} decl_counts;
+
+static void count_types_in_msg(const google_protobuf_DescriptorProto *msg_proto,
+ decl_counts *counts) {
+ const google_protobuf_DescriptorProto *const *msgs;
+ size_t i, n;
+
+ counts->msg_count++;
+
+ msgs = google_protobuf_DescriptorProto_nested_type(msg_proto, &n);
+ for (i = 0; i < n; i++) {
+ count_types_in_msg(msgs[i], counts);
+ }
+
+ google_protobuf_DescriptorProto_enum_type(msg_proto, &n);
+ counts->enum_count += n;
+
+ google_protobuf_DescriptorProto_extension(msg_proto, &n);
+ counts->ext_count += n;
+}
+
+static void count_types_in_file(
+ const google_protobuf_FileDescriptorProto *file_proto,
+ decl_counts *counts) {
+ const google_protobuf_DescriptorProto *const *msgs;
+ size_t i, n;
+
+ msgs = google_protobuf_FileDescriptorProto_message_type(file_proto, &n);
+ for (i = 0; i < n; i++) {
+ count_types_in_msg(msgs[i], counts);
+ }
+
+ google_protobuf_FileDescriptorProto_enum_type(file_proto, &n);
+ counts->enum_count += n;
+
+ google_protobuf_FileDescriptorProto_extension(file_proto, &n);
+ counts->ext_count += n;
+}
+
+static bool resolve_fielddef(const symtab_addctx *ctx, const char *prefix,
+ upb_fielddef *f) {
+ upb_strview name;
+ const google_protobuf_FieldDescriptorProto *field_proto = f->sub.unresolved;
+
+ if (f->is_extension_) {
+ if (!google_protobuf_FieldDescriptorProto_has_extendee(field_proto)) {
+ upb_status_seterrf(ctx->status,
+ "extension for field '%s' had no extendee",
+ f->full_name);
+ return false;
+ }
+
+ name = google_protobuf_FieldDescriptorProto_extendee(field_proto);
+ f->msgdef = symtab_resolve(ctx, f, prefix, name, UPB_DEFTYPE_MSG);
+ CHK(f->msgdef);
+ }
+
+ if ((upb_fielddef_issubmsg(f) || f->type_ == UPB_DESCRIPTOR_TYPE_ENUM) &&
+ !google_protobuf_FieldDescriptorProto_has_type_name(field_proto)) {
+ upb_status_seterrf(ctx->status, "field '%s' is missing type name",
+ f->full_name);
+ return false;
+ }
+
+ name = google_protobuf_FieldDescriptorProto_type_name(field_proto);
+
+ if (upb_fielddef_issubmsg(f)) {
+ f->sub.msgdef = symtab_resolve(ctx, f, prefix, name, UPB_DEFTYPE_MSG);
+ CHK(f->sub.msgdef);
+ } else if (f->type_ == UPB_DESCRIPTOR_TYPE_ENUM) {
+ f->sub.enumdef = symtab_resolve(ctx, f, prefix, name, UPB_DEFTYPE_ENUM);
+ CHK(f->sub.enumdef);
+ }
+
+ /* Have to delay resolving of the default value until now because of the enum
+ * case, since enum defaults are specified with a label. */
+ if (google_protobuf_FieldDescriptorProto_has_default_value(field_proto)) {
+ upb_strview defaultval =
+ google_protobuf_FieldDescriptorProto_default_value(field_proto);
+
+ if (f->file->syntax == UPB_SYNTAX_PROTO3) {
+ upb_status_seterrf(ctx->status,
+ "proto3 fields cannot have explicit defaults (%s)",
+ f->full_name);
+ return false;
+ }
+
+ if (upb_fielddef_issubmsg(f)) {
+ upb_status_seterrf(ctx->status,
+ "message fields cannot have explicit defaults (%s)",
+ f->full_name);
+ return false;
+ }
+
+ if (!parse_default(ctx, defaultval.data, defaultval.size, f)) {
+ upb_status_seterrf(ctx->status,
+ "couldn't parse default '" UPB_STRVIEW_FORMAT
+ "' for field (%s)",
+ UPB_STRVIEW_ARGS(defaultval), f->full_name);
+ return false;
+ }
+ } else {
+ set_default_default(ctx, f);
+ }
+
+ return true;
+}
+
+static bool build_filedef(
+ const symtab_addctx *ctx, upb_filedef *file,
+ const google_protobuf_FileDescriptorProto *file_proto) {
+ upb_alloc *alloc = ctx->alloc;
+ const google_protobuf_FileOptions *file_options_proto;
+ const google_protobuf_DescriptorProto *const *msgs;
+ const google_protobuf_EnumDescriptorProto *const *enums;
+ const google_protobuf_FieldDescriptorProto *const *exts;
+ const upb_strview* strs;
+ size_t i, n;
+ decl_counts counts = {0};
+
+ count_types_in_file(file_proto, &counts);
+
+ file->msgs = upb_malloc(alloc, sizeof(*file->msgs) * counts.msg_count);
+ file->enums = upb_malloc(alloc, sizeof(*file->enums) * counts.enum_count);
+ file->exts = upb_malloc(alloc, sizeof(*file->exts) * counts.ext_count);
+
+ CHK_OOM(counts.msg_count == 0 || file->msgs);
+ CHK_OOM(counts.enum_count == 0 || file->enums);
+ CHK_OOM(counts.ext_count == 0 || file->exts);
+
+ /* We increment these as defs are added. */
+ file->msg_count = 0;
+ file->enum_count = 0;
+ file->ext_count = 0;
+
+ if (!google_protobuf_FileDescriptorProto_has_name(file_proto)) {
+ upb_status_seterrmsg(ctx->status, "File has no name");
+ return false;
+ }
+
+ file->name =
+ strviewdup(ctx, google_protobuf_FileDescriptorProto_name(file_proto));
+ file->phpprefix = NULL;
+ file->phpnamespace = NULL;
+
+ if (google_protobuf_FileDescriptorProto_has_package(file_proto)) {
+ upb_strview package =
+ google_protobuf_FileDescriptorProto_package(file_proto);
+ CHK(upb_isident(package, true, ctx->status));
+ file->package = strviewdup(ctx, package);
+ } else {
+ file->package = NULL;
+ }
+
+ if (google_protobuf_FileDescriptorProto_has_syntax(file_proto)) {
+ upb_strview syntax =
+ google_protobuf_FileDescriptorProto_syntax(file_proto);
+
+ if (streql_view(syntax, "proto2")) {
+ file->syntax = UPB_SYNTAX_PROTO2;
+ } else if (streql_view(syntax, "proto3")) {
+ file->syntax = UPB_SYNTAX_PROTO3;
+ } else {
+ upb_status_seterrf(ctx->status, "Invalid syntax '%s'", syntax);
+ return false;
+ }
+ } else {
+ file->syntax = UPB_SYNTAX_PROTO2;
+ }
+
+ /* Read options. */
+ file_options_proto = google_protobuf_FileDescriptorProto_options(file_proto);
+ if (file_options_proto) {
+ if (google_protobuf_FileOptions_has_php_class_prefix(file_options_proto)) {
+ file->phpprefix = strviewdup(
+ ctx,
+ google_protobuf_FileOptions_php_class_prefix(file_options_proto));
+ }
+ if (google_protobuf_FileOptions_has_php_namespace(file_options_proto)) {
+ file->phpnamespace = strviewdup(
+ ctx, google_protobuf_FileOptions_php_namespace(file_options_proto));
+ }
+ }
+
+ /* Verify dependencies. */
+ strs = google_protobuf_FileDescriptorProto_dependency(file_proto, &n);
+ file->deps = upb_malloc(alloc, sizeof(*file->deps) * n) ;
+ CHK_OOM(n == 0 || file->deps);
+
+ for (i = 0; i < n; i++) {
+ upb_strview dep_name = strs[i];
+ upb_value v;
+ if (!upb_strtable_lookup2(&ctx->symtab->files, dep_name.data,
+ dep_name.size, &v)) {
+ upb_status_seterrf(ctx->status,
+ "Depends on file '" UPB_STRVIEW_FORMAT
+ "', but it has not been loaded",
+ UPB_STRVIEW_ARGS(dep_name));
+ return false;
+ }
+ file->deps[i] = upb_value_getconstptr(v);
+ }
+
+ /* Create messages. */
+ msgs = google_protobuf_FileDescriptorProto_message_type(file_proto, &n);
+ for (i = 0; i < n; i++) {
+ CHK(create_msgdef(ctx, file->package, msgs[i]));
+ }
+
+ /* Create enums. */
+ enums = google_protobuf_FileDescriptorProto_enum_type(file_proto, &n);
+ for (i = 0; i < n; i++) {
+ CHK(create_enumdef(ctx, file->package, enums[i]));
+ }
+
+ /* Create extensions. */
+ exts = google_protobuf_FileDescriptorProto_extension(file_proto, &n);
+ file->exts = upb_malloc(alloc, sizeof(*file->exts) * n);
+ CHK_OOM(n == 0 || file->exts);
+ for (i = 0; i < n; i++) {
+ CHK(create_fielddef(ctx, file->package, NULL, exts[i]));
+ }
+
+ /* Now that all names are in the table, resolve references. */
+ for (i = 0; i < file->ext_count; i++) {
+ CHK(resolve_fielddef(ctx, file->package, (upb_fielddef*)&file->exts[i]));
+ }
+
+ for (i = 0; i < file->msg_count; i++) {
+ const upb_msgdef *m = &file->msgs[i];
+ int j;
+ for (j = 0; j < m->field_count; j++) {
+ CHK(resolve_fielddef(ctx, m->full_name, (upb_fielddef*)&m->fields[j]));
+ }
+ }
+
+ return true;
+ }
+
+static bool upb_symtab_addtotabs(upb_symtab *s, symtab_addctx *ctx,
+ upb_status *status) {
+ const upb_filedef *file = ctx->file;
+ upb_alloc *alloc = upb_arena_alloc(s->arena);
+ upb_strtable_iter iter;
+
+ CHK_OOM(upb_strtable_insert3(&s->files, file->name, strlen(file->name),
+ upb_value_constptr(file), alloc));
+
+ upb_strtable_begin(&iter, ctx->addtab);
+ for (; !upb_strtable_done(&iter); upb_strtable_next(&iter)) {
+ const char *key = upb_strtable_iter_key(&iter);
+ size_t keylen = upb_strtable_iter_keylength(&iter);
+ upb_value value = upb_strtable_iter_value(&iter);
+ CHK_OOM(upb_strtable_insert3(&s->syms, key, keylen, value, alloc));
+ }
+
+ return true;
+}
+
+/* upb_filedef ****************************************************************/
+
+const char *upb_filedef_name(const upb_filedef *f) {
+ return f->name;
+}
+
+const char *upb_filedef_package(const upb_filedef *f) {
+ return f->package;
+}
+
+const char *upb_filedef_phpprefix(const upb_filedef *f) {
+ return f->phpprefix;
+}
+
+const char *upb_filedef_phpnamespace(const upb_filedef *f) {
+ return f->phpnamespace;
+}
+
+upb_syntax_t upb_filedef_syntax(const upb_filedef *f) {
+ return f->syntax;
+}
+
+int upb_filedef_msgcount(const upb_filedef *f) {
+ return f->msg_count;
+}
+
+int upb_filedef_depcount(const upb_filedef *f) {
+ return f->dep_count;
+}
+
+int upb_filedef_enumcount(const upb_filedef *f) {
+ return f->enum_count;
+}
+
+const upb_filedef *upb_filedef_dep(const upb_filedef *f, int i) {
+ return i < 0 || i >= f->dep_count ? NULL : f->deps[i];
+}
+
+const upb_msgdef *upb_filedef_msg(const upb_filedef *f, int i) {
+ return i < 0 || i >= f->msg_count ? NULL : &f->msgs[i];
+}
+
+const upb_enumdef *upb_filedef_enum(const upb_filedef *f, int i) {
+ return i < 0 || i >= f->enum_count ? NULL : &f->enums[i];
+}
+
+void upb_symtab_free(upb_symtab *s) {
+ upb_arena_free(s->arena);
+ upb_gfree(s);
+}
+
+upb_symtab *upb_symtab_new(void) {
+ upb_symtab *s = upb_gmalloc(sizeof(*s));
+ upb_alloc *alloc;
+
+ if (!s) {
+ return NULL;
+ }
+
+ s->arena = upb_arena_new();
+ alloc = upb_arena_alloc(s->arena);
+
+ if (!upb_strtable_init2(&s->syms, UPB_CTYPE_CONSTPTR, alloc) ||
+ !upb_strtable_init2(&s->files, UPB_CTYPE_CONSTPTR, alloc)) {
+ upb_arena_free(s->arena);
+ upb_gfree(s);
+ s = NULL;
+ }
+ return s;
+}
+
+const upb_msgdef *upb_symtab_lookupmsg(const upb_symtab *s, const char *sym) {
+ upb_value v;
+ return upb_strtable_lookup(&s->syms, sym, &v) ?
+ unpack_def(v, UPB_DEFTYPE_MSG) : NULL;
+}
+
+const upb_msgdef *upb_symtab_lookupmsg2(const upb_symtab *s, const char *sym,
+ size_t len) {
+ upb_value v;
+ return upb_strtable_lookup2(&s->syms, sym, len, &v) ?
+ unpack_def(v, UPB_DEFTYPE_MSG) : NULL;
+}
+
+const upb_enumdef *upb_symtab_lookupenum(const upb_symtab *s, const char *sym) {
+ upb_value v;
+ return upb_strtable_lookup(&s->syms, sym, &v) ?
+ unpack_def(v, UPB_DEFTYPE_ENUM) : NULL;
+}
+
+const upb_filedef *upb_symtab_lookupfile(const upb_symtab *s, const char *name) {
+ upb_value v;
+ return upb_strtable_lookup(&s->files, name, &v) ? upb_value_getconstptr(v)
+ : NULL;
+}
+
+const upb_filedef *upb_symtab_addfile(
+ upb_symtab *s, const google_protobuf_FileDescriptorProto *file_proto,
+ upb_status *status) {
+ upb_arena *tmparena = upb_arena_new();
+ upb_strtable addtab;
+ upb_alloc *alloc = upb_arena_alloc(s->arena);
+ upb_filedef *file = upb_malloc(alloc, sizeof(*file));
+ bool ok;
+ symtab_addctx ctx;
+
+ ctx.file = file;
+ ctx.symtab = s;
+ ctx.alloc = alloc;
+ ctx.tmp = upb_arena_alloc(tmparena);
+ ctx.addtab = &addtab;
+ ctx.status = status;
+
+ ok = file &&
+ upb_strtable_init2(&addtab, UPB_CTYPE_CONSTPTR, ctx.tmp) &&
+ build_filedef(&ctx, file, file_proto) &&
+ upb_symtab_addtotabs(s, &ctx, status);
+
+ upb_arena_free(tmparena);
+ return ok ? file : NULL;
+}
+
+/* Include here since we want most of this file to be stdio-free. */
+#include <stdio.h>
+
+bool _upb_symtab_loaddefinit(upb_symtab *s, const upb_def_init *init) {
+ /* Since this function should never fail (it would indicate a bug in upb) we
+ * print errors to stderr instead of returning error status to the user. */
+ upb_def_init **deps = init->deps;
+ google_protobuf_FileDescriptorProto *file;
+ upb_arena *arena;
+ upb_status status;
+
+ upb_status_clear(&status);
+
+ if (upb_strtable_lookup(&s->files, init->filename, NULL)) {
+ return true;
+ }
+
+ arena = upb_arena_new();
+
+ for (; *deps; deps++) {
+ if (!_upb_symtab_loaddefinit(s, *deps)) goto err;
+ }
+
+ file = google_protobuf_FileDescriptorProto_parse(
+ init->descriptor.data, init->descriptor.size, arena);
+
+ if (!file) {
+ upb_status_seterrf(
+ &status,
+ "Failed to parse compiled-in descriptor for file '%s'. This should "
+ "never happen.",
+ init->filename);
+ goto err;
+ }
+
+ if (!upb_symtab_addfile(s, file, &status)) goto err;
+
+ upb_arena_free(arena);
+ return true;
+
+err:
+ fprintf(stderr, "Error loading compiled-in descriptor: %s\n",
+ upb_status_errmsg(&status));
+ upb_arena_free(arena);
+ return false;
+}
+
+#undef CHK
+#undef CHK_OOM
git://repos.xcallymotion.com / motion2.git / blobdiff