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| 1 // Protocol Buffers - Google's data interchange format | |
| 2 // Copyright 2014 Google Inc. All rights reserved. | |
| 3 // https://developers.google.com/protocol-buffers/ | |
| 4 // | |
| 5 // Redistribution and use in source and binary forms, with or without | |
| 6 // modification, are permitted provided that the following conditions are | |
| 7 // met: | |
| 8 // | |
| 9 // * Redistributions of source code must retain the above copyright | |
| 10 // notice, this list of conditions and the following disclaimer. | |
| 11 // * Redistributions in binary form must reproduce the above | |
| 12 // copyright notice, this list of conditions and the following disclaimer | |
| 13 // in the documentation and/or other materials provided with the | |
| 14 // distribution. | |
| 15 // * Neither the name of Google Inc. nor the names of its | |
| 16 // contributors may be used to endorse or promote products derived from | |
| 17 // this software without specific prior written permission. | |
| 18 // | |
| 19 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | |
| 20 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | |
| 21 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | |
| 22 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT | |
| 23 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
| 24 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT | |
| 25 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | |
| 26 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | |
| 27 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
| 28 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | |
| 29 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
| 30 | |
| 31 #include "protobuf.h" | |
| 32 | |
| 33 #include <math.h> | |
| 34 | |
| 35 #include <ruby/encoding.h> | |
| 36 | |
| 37 // ----------------------------------------------------------------------------- | |
| 38 // Ruby <-> native slot management. | |
| 39 // ----------------------------------------------------------------------------- | |
| 40 | |
| 41 #define DEREF(memory, type) *(type*)(memory) | |
| 42 | |
| 43 size_t native_slot_size(upb_fieldtype_t type) { | |
| 44 switch (type) { | |
| 45 case UPB_TYPE_FLOAT: return 4; | |
| 46 case UPB_TYPE_DOUBLE: return 8; | |
| 47 case UPB_TYPE_BOOL: return 1; | |
| 48 case UPB_TYPE_STRING: return sizeof(VALUE); | |
| 49 case UPB_TYPE_BYTES: return sizeof(VALUE); | |
| 50 case UPB_TYPE_MESSAGE: return sizeof(VALUE); | |
| 51 case UPB_TYPE_ENUM: return 4; | |
| 52 case UPB_TYPE_INT32: return 4; | |
| 53 case UPB_TYPE_INT64: return 8; | |
| 54 case UPB_TYPE_UINT32: return 4; | |
| 55 case UPB_TYPE_UINT64: return 8; | |
| 56 default: return 0; | |
| 57 } | |
| 58 } | |
| 59 | |
| 60 static bool is_ruby_num(VALUE value) { | |
| 61 return (TYPE(value) == T_FLOAT || | |
| 62 TYPE(value) == T_FIXNUM || | |
| 63 TYPE(value) == T_BIGNUM); | |
| 64 } | |
| 65 | |
| 66 void native_slot_check_int_range_precision(upb_fieldtype_t type, VALUE val) { | |
| 67 if (!is_ruby_num(val)) { | |
| 68 rb_raise(rb_eTypeError, "Expected number type for integral field."); | |
| 69 } | |
| 70 | |
| 71 // NUM2{INT,UINT,LL,ULL} macros do the appropriate range checks on upper | |
| 72 // bound; we just need to do precision checks (i.e., disallow rounding) and | |
| 73 // check for < 0 on unsigned types. | |
| 74 if (TYPE(val) == T_FLOAT) { | |
| 75 double dbl_val = NUM2DBL(val); | |
| 76 if (floor(dbl_val) != dbl_val) { | |
| 77 rb_raise(rb_eRangeError, | |
| 78 "Non-integral floating point value assigned to integer field."); | |
| 79 } | |
| 80 } | |
| 81 if (type == UPB_TYPE_UINT32 || type == UPB_TYPE_UINT64) { | |
| 82 if (NUM2DBL(val) < 0) { | |
| 83 rb_raise(rb_eRangeError, | |
| 84 "Assigning negative value to unsigned integer field."); | |
| 85 } | |
| 86 } | |
| 87 } | |
| 88 | |
| 89 void native_slot_validate_string_encoding(upb_fieldtype_t type, VALUE value) { | |
| 90 bool bad_encoding = false; | |
| 91 rb_encoding* string_encoding = rb_enc_from_index(ENCODING_GET(value)); | |
| 92 if (type == UPB_TYPE_STRING) { | |
| 93 bad_encoding = | |
| 94 string_encoding != kRubyStringUtf8Encoding && | |
| 95 string_encoding != kRubyStringASCIIEncoding; | |
| 96 } else { | |
| 97 bad_encoding = | |
| 98 string_encoding != kRubyString8bitEncoding; | |
| 99 } | |
| 100 // Check that encoding is UTF-8 or ASCII (for string fields) or ASCII-8BIT | |
| 101 // (for bytes fields). | |
| 102 if (bad_encoding) { | |
| 103 rb_raise(rb_eTypeError, "Encoding for '%s' fields must be %s (was %s)", | |
| 104 (type == UPB_TYPE_STRING) ? "string" : "bytes", | |
| 105 (type == UPB_TYPE_STRING) ? "UTF-8 or ASCII" : "ASCII-8BIT", | |
| 106 rb_enc_name(string_encoding)); | |
| 107 } | |
| 108 } | |
| 109 | |
| 110 void native_slot_set(upb_fieldtype_t type, VALUE type_class, | |
| 111 void* memory, VALUE value) { | |
| 112 native_slot_set_value_and_case(type, type_class, memory, value, NULL, 0); | |
| 113 } | |
| 114 | |
| 115 void native_slot_set_value_and_case(upb_fieldtype_t type, VALUE type_class, | |
| 116 void* memory, VALUE value, | |
| 117 uint32_t* case_memory, | |
| 118 uint32_t case_number) { | |
| 119 // Note that in order to atomically change the value in memory and the case | |
| 120 // value (w.r.t. Ruby VM calls), we must set the value at |memory| only after | |
| 121 // all Ruby VM calls are complete. The case is then set at the bottom of this | |
| 122 // function. | |
| 123 switch (type) { | |
| 124 case UPB_TYPE_FLOAT: | |
| 125 if (!is_ruby_num(value)) { | |
| 126 rb_raise(rb_eTypeError, "Expected number type for float field."); | |
| 127 } | |
| 128 DEREF(memory, float) = NUM2DBL(value); | |
| 129 break; | |
| 130 case UPB_TYPE_DOUBLE: | |
| 131 if (!is_ruby_num(value)) { | |
| 132 rb_raise(rb_eTypeError, "Expected number type for double field."); | |
| 133 } | |
| 134 DEREF(memory, double) = NUM2DBL(value); | |
| 135 break; | |
| 136 case UPB_TYPE_BOOL: { | |
| 137 int8_t val = -1; | |
| 138 if (value == Qtrue) { | |
| 139 val = 1; | |
| 140 } else if (value == Qfalse) { | |
| 141 val = 0; | |
| 142 } else { | |
| 143 rb_raise(rb_eTypeError, "Invalid argument for boolean field."); | |
| 144 } | |
| 145 DEREF(memory, int8_t) = val; | |
| 146 break; | |
| 147 } | |
| 148 case UPB_TYPE_STRING: | |
| 149 case UPB_TYPE_BYTES: { | |
| 150 if (CLASS_OF(value) != rb_cString) { | |
| 151 rb_raise(rb_eTypeError, "Invalid argument for string field."); | |
| 152 } | |
| 153 native_slot_validate_string_encoding(type, value); | |
| 154 DEREF(memory, VALUE) = value; | |
| 155 break; | |
| 156 } | |
| 157 case UPB_TYPE_MESSAGE: { | |
| 158 if (CLASS_OF(value) == CLASS_OF(Qnil)) { | |
| 159 value = Qnil; | |
| 160 } else if (CLASS_OF(value) != type_class) { | |
| 161 rb_raise(rb_eTypeError, | |
| 162 "Invalid type %s to assign to submessage field.", | |
| 163 rb_class2name(CLASS_OF(value))); | |
| 164 } | |
| 165 DEREF(memory, VALUE) = value; | |
| 166 break; | |
| 167 } | |
| 168 case UPB_TYPE_ENUM: { | |
| 169 if (!is_ruby_num(value) && TYPE(value) != T_SYMBOL) { | |
| 170 rb_raise(rb_eTypeError, | |
| 171 "Expected number or symbol type for enum field."); | |
| 172 } | |
| 173 int32_t int_val = 0; | |
| 174 if (TYPE(value) == T_SYMBOL) { | |
| 175 // Ensure that the given symbol exists in the enum module. | |
| 176 VALUE lookup = rb_funcall(type_class, rb_intern("resolve"), 1, value); | |
| 177 if (lookup == Qnil) { | |
| 178 rb_raise(rb_eRangeError, "Unknown symbol value for enum field."); | |
| 179 } else { | |
| 180 int_val = NUM2INT(lookup); | |
| 181 } | |
| 182 } else { | |
| 183 native_slot_check_int_range_precision(UPB_TYPE_INT32, value); | |
| 184 int_val = NUM2INT(value); | |
| 185 } | |
| 186 DEREF(memory, int32_t) = int_val; | |
| 187 break; | |
| 188 } | |
| 189 case UPB_TYPE_INT32: | |
| 190 case UPB_TYPE_INT64: | |
| 191 case UPB_TYPE_UINT32: | |
| 192 case UPB_TYPE_UINT64: | |
| 193 native_slot_check_int_range_precision(type, value); | |
| 194 switch (type) { | |
| 195 case UPB_TYPE_INT32: | |
| 196 DEREF(memory, int32_t) = NUM2INT(value); | |
| 197 break; | |
| 198 case UPB_TYPE_INT64: | |
| 199 DEREF(memory, int64_t) = NUM2LL(value); | |
| 200 break; | |
| 201 case UPB_TYPE_UINT32: | |
| 202 DEREF(memory, uint32_t) = NUM2UINT(value); | |
| 203 break; | |
| 204 case UPB_TYPE_UINT64: | |
| 205 DEREF(memory, uint64_t) = NUM2ULL(value); | |
| 206 break; | |
| 207 default: | |
| 208 break; | |
| 209 } | |
| 210 break; | |
| 211 default: | |
| 212 break; | |
| 213 } | |
| 214 | |
| 215 if (case_memory != NULL) { | |
| 216 *case_memory = case_number; | |
| 217 } | |
| 218 } | |
| 219 | |
| 220 VALUE native_slot_get(upb_fieldtype_t type, | |
| 221 VALUE type_class, | |
| 222 const void* memory) { | |
| 223 switch (type) { | |
| 224 case UPB_TYPE_FLOAT: | |
| 225 return DBL2NUM(DEREF(memory, float)); | |
| 226 case UPB_TYPE_DOUBLE: | |
| 227 return DBL2NUM(DEREF(memory, double)); | |
| 228 case UPB_TYPE_BOOL: | |
| 229 return DEREF(memory, int8_t) ? Qtrue : Qfalse; | |
| 230 case UPB_TYPE_STRING: | |
| 231 case UPB_TYPE_BYTES: | |
| 232 case UPB_TYPE_MESSAGE: | |
| 233 return DEREF(memory, VALUE); | |
| 234 case UPB_TYPE_ENUM: { | |
| 235 int32_t val = DEREF(memory, int32_t); | |
| 236 VALUE symbol = enum_lookup(type_class, INT2NUM(val)); | |
| 237 if (symbol == Qnil) { | |
| 238 return INT2NUM(val); | |
| 239 } else { | |
| 240 return symbol; | |
| 241 } | |
| 242 } | |
| 243 case UPB_TYPE_INT32: | |
| 244 return INT2NUM(DEREF(memory, int32_t)); | |
| 245 case UPB_TYPE_INT64: | |
| 246 return LL2NUM(DEREF(memory, int64_t)); | |
| 247 case UPB_TYPE_UINT32: | |
| 248 return UINT2NUM(DEREF(memory, uint32_t)); | |
| 249 case UPB_TYPE_UINT64: | |
| 250 return ULL2NUM(DEREF(memory, uint64_t)); | |
| 251 default: | |
| 252 return Qnil; | |
| 253 } | |
| 254 } | |
| 255 | |
| 256 void native_slot_init(upb_fieldtype_t type, void* memory) { | |
| 257 switch (type) { | |
| 258 case UPB_TYPE_FLOAT: | |
| 259 DEREF(memory, float) = 0.0; | |
| 260 break; | |
| 261 case UPB_TYPE_DOUBLE: | |
| 262 DEREF(memory, double) = 0.0; | |
| 263 break; | |
| 264 case UPB_TYPE_BOOL: | |
| 265 DEREF(memory, int8_t) = 0; | |
| 266 break; | |
| 267 case UPB_TYPE_STRING: | |
| 268 case UPB_TYPE_BYTES: | |
| 269 DEREF(memory, VALUE) = rb_str_new2(""); | |
| 270 rb_enc_associate(DEREF(memory, VALUE), (type == UPB_TYPE_BYTES) ? | |
| 271 kRubyString8bitEncoding : kRubyStringUtf8Encoding); | |
| 272 break; | |
| 273 case UPB_TYPE_MESSAGE: | |
| 274 DEREF(memory, VALUE) = Qnil; | |
| 275 break; | |
| 276 case UPB_TYPE_ENUM: | |
| 277 case UPB_TYPE_INT32: | |
| 278 DEREF(memory, int32_t) = 0; | |
| 279 break; | |
| 280 case UPB_TYPE_INT64: | |
| 281 DEREF(memory, int64_t) = 0; | |
| 282 break; | |
| 283 case UPB_TYPE_UINT32: | |
| 284 DEREF(memory, uint32_t) = 0; | |
| 285 break; | |
| 286 case UPB_TYPE_UINT64: | |
| 287 DEREF(memory, uint64_t) = 0; | |
| 288 break; | |
| 289 default: | |
| 290 break; | |
| 291 } | |
| 292 } | |
| 293 | |
| 294 void native_slot_mark(upb_fieldtype_t type, void* memory) { | |
| 295 switch (type) { | |
| 296 case UPB_TYPE_STRING: | |
| 297 case UPB_TYPE_BYTES: | |
| 298 case UPB_TYPE_MESSAGE: | |
| 299 rb_gc_mark(DEREF(memory, VALUE)); | |
| 300 break; | |
| 301 default: | |
| 302 break; | |
| 303 } | |
| 304 } | |
| 305 | |
| 306 void native_slot_dup(upb_fieldtype_t type, void* to, void* from) { | |
| 307 memcpy(to, from, native_slot_size(type)); | |
| 308 } | |
| 309 | |
| 310 void native_slot_deep_copy(upb_fieldtype_t type, void* to, void* from) { | |
| 311 switch (type) { | |
| 312 case UPB_TYPE_STRING: | |
| 313 case UPB_TYPE_BYTES: { | |
| 314 VALUE from_val = DEREF(from, VALUE); | |
| 315 DEREF(to, VALUE) = (from_val != Qnil) ? | |
| 316 rb_funcall(from_val, rb_intern("dup"), 0) : Qnil; | |
| 317 break; | |
| 318 } | |
| 319 case UPB_TYPE_MESSAGE: { | |
| 320 VALUE from_val = DEREF(from, VALUE); | |
| 321 DEREF(to, VALUE) = (from_val != Qnil) ? | |
| 322 Message_deep_copy(from_val) : Qnil; | |
| 323 break; | |
| 324 } | |
| 325 default: | |
| 326 memcpy(to, from, native_slot_size(type)); | |
| 327 } | |
| 328 } | |
| 329 | |
| 330 bool native_slot_eq(upb_fieldtype_t type, void* mem1, void* mem2) { | |
| 331 switch (type) { | |
| 332 case UPB_TYPE_STRING: | |
| 333 case UPB_TYPE_BYTES: | |
| 334 case UPB_TYPE_MESSAGE: { | |
| 335 VALUE val1 = DEREF(mem1, VALUE); | |
| 336 VALUE val2 = DEREF(mem2, VALUE); | |
| 337 VALUE ret = rb_funcall(val1, rb_intern("=="), 1, val2); | |
| 338 return ret == Qtrue; | |
| 339 } | |
| 340 default: | |
| 341 return !memcmp(mem1, mem2, native_slot_size(type)); | |
| 342 } | |
| 343 } | |
| 344 | |
| 345 // ----------------------------------------------------------------------------- | |
| 346 // Map field utilities. | |
| 347 // ----------------------------------------------------------------------------- | |
| 348 | |
| 349 bool is_map_field(const upb_fielddef* field) { | |
| 350 if (upb_fielddef_label(field) != UPB_LABEL_REPEATED || | |
| 351 upb_fielddef_type(field) != UPB_TYPE_MESSAGE) { | |
| 352 return false; | |
| 353 } | |
| 354 const upb_msgdef* subdef = upb_fielddef_msgsubdef(field); | |
| 355 return upb_msgdef_mapentry(subdef); | |
| 356 } | |
| 357 | |
| 358 const upb_fielddef* map_field_key(const upb_fielddef* field) { | |
| 359 assert(is_map_field(field)); | |
| 360 const upb_msgdef* subdef = upb_fielddef_msgsubdef(field); | |
| 361 return map_entry_key(subdef); | |
| 362 } | |
| 363 | |
| 364 const upb_fielddef* map_field_value(const upb_fielddef* field) { | |
| 365 assert(is_map_field(field)); | |
| 366 const upb_msgdef* subdef = upb_fielddef_msgsubdef(field); | |
| 367 return map_entry_value(subdef); | |
| 368 } | |
| 369 | |
| 370 const upb_fielddef* map_entry_key(const upb_msgdef* msgdef) { | |
| 371 const upb_fielddef* key_field = upb_msgdef_itof(msgdef, MAP_KEY_FIELD); | |
| 372 assert(key_field != NULL); | |
| 373 return key_field; | |
| 374 } | |
| 375 | |
| 376 const upb_fielddef* map_entry_value(const upb_msgdef* msgdef) { | |
| 377 const upb_fielddef* value_field = upb_msgdef_itof(msgdef, MAP_VALUE_FIELD); | |
| 378 assert(value_field != NULL); | |
| 379 return value_field; | |
| 380 } | |
| 381 | |
| 382 // ----------------------------------------------------------------------------- | |
| 383 // Memory layout management. | |
| 384 // ----------------------------------------------------------------------------- | |
| 385 | |
| 386 static size_t align_up_to(size_t offset, size_t granularity) { | |
| 387 // Granularity must be a power of two. | |
| 388 return (offset + granularity - 1) & ~(granularity - 1); | |
| 389 } | |
| 390 | |
| 391 MessageLayout* create_layout(const upb_msgdef* msgdef) { | |
| 392 MessageLayout* layout = ALLOC(MessageLayout); | |
| 393 int nfields = upb_msgdef_numfields(msgdef); | |
| 394 layout->fields = ALLOC_N(MessageField, nfields); | |
| 395 | |
| 396 upb_msg_field_iter it; | |
| 397 size_t off = 0; | |
| 398 for (upb_msg_field_begin(&it, msgdef); | |
| 399 !upb_msg_field_done(&it); | |
| 400 upb_msg_field_next(&it)) { | |
| 401 const upb_fielddef* field = upb_msg_iter_field(&it); | |
| 402 | |
| 403 if (upb_fielddef_containingoneof(field)) { | |
| 404 // Oneofs are handled separately below. | |
| 405 continue; | |
| 406 } | |
| 407 | |
| 408 // Allocate |field_size| bytes for this field in the layout. | |
| 409 size_t field_size = 0; | |
| 410 if (upb_fielddef_label(field) == UPB_LABEL_REPEATED) { | |
| 411 field_size = sizeof(VALUE); | |
| 412 } else { | |
| 413 field_size = native_slot_size(upb_fielddef_type(field)); | |
| 414 } | |
| 415 // Align current offset up to |size| granularity. | |
| 416 off = align_up_to(off, field_size); | |
| 417 layout->fields[upb_fielddef_index(field)].offset = off; | |
| 418 layout->fields[upb_fielddef_index(field)].case_offset = | |
| 419 MESSAGE_FIELD_NO_CASE; | |
| 420 off += field_size; | |
| 421 } | |
| 422 | |
| 423 // Handle oneofs now -- we iterate over oneofs specifically and allocate only | |
| 424 // one slot per oneof. | |
| 425 // | |
| 426 // We assign all value slots first, then pack the 'case' fields at the end, | |
| 427 // since in the common case (modern 64-bit platform) these are 8 bytes and 4 | |
| 428 // bytes respectively and we want to avoid alignment overhead. | |
| 429 // | |
| 430 // Note that we reserve 4 bytes (a uint32) per 'case' slot because the value | |
| 431 // space for oneof cases is conceptually as wide as field tag numbers. In | |
| 432 // practice, it's unlikely that a oneof would have more than e.g. 256 or 64K | |
| 433 // members (8 or 16 bits respectively), so conceivably we could assign | |
| 434 // consecutive case numbers and then pick a smaller oneof case slot size, but | |
| 435 // the complexity to implement this indirection is probably not worthwhile. | |
| 436 upb_msg_oneof_iter oit; | |
| 437 for (upb_msg_oneof_begin(&oit, msgdef); | |
| 438 !upb_msg_oneof_done(&oit); | |
| 439 upb_msg_oneof_next(&oit)) { | |
| 440 const upb_oneofdef* oneof = upb_msg_iter_oneof(&oit); | |
| 441 | |
| 442 // Always allocate NATIVE_SLOT_MAX_SIZE bytes, but share the slot between | |
| 443 // all fields. | |
| 444 size_t field_size = NATIVE_SLOT_MAX_SIZE; | |
| 445 // Align the offset. | |
| 446 off = align_up_to(off, field_size); | |
| 447 // Assign all fields in the oneof this same offset. | |
| 448 upb_oneof_iter fit; | |
| 449 for (upb_oneof_begin(&fit, oneof); | |
| 450 !upb_oneof_done(&fit); | |
| 451 upb_oneof_next(&fit)) { | |
| 452 const upb_fielddef* field = upb_oneof_iter_field(&fit); | |
| 453 layout->fields[upb_fielddef_index(field)].offset = off; | |
| 454 } | |
| 455 off += field_size; | |
| 456 } | |
| 457 | |
| 458 // Now the case fields. | |
| 459 for (upb_msg_oneof_begin(&oit, msgdef); | |
| 460 !upb_msg_oneof_done(&oit); | |
| 461 upb_msg_oneof_next(&oit)) { | |
| 462 const upb_oneofdef* oneof = upb_msg_iter_oneof(&oit); | |
| 463 | |
| 464 size_t field_size = sizeof(uint32_t); | |
| 465 // Align the offset. | |
| 466 off = (off + field_size - 1) & ~(field_size - 1); | |
| 467 // Assign all fields in the oneof this same offset. | |
| 468 upb_oneof_iter fit; | |
| 469 for (upb_oneof_begin(&fit, oneof); | |
| 470 !upb_oneof_done(&fit); | |
| 471 upb_oneof_next(&fit)) { | |
| 472 const upb_fielddef* field = upb_oneof_iter_field(&fit); | |
| 473 layout->fields[upb_fielddef_index(field)].case_offset = off; | |
| 474 } | |
| 475 off += field_size; | |
| 476 } | |
| 477 | |
| 478 layout->size = off; | |
| 479 | |
| 480 layout->msgdef = msgdef; | |
| 481 upb_msgdef_ref(layout->msgdef, &layout->msgdef); | |
| 482 | |
| 483 return layout; | |
| 484 } | |
| 485 | |
| 486 void free_layout(MessageLayout* layout) { | |
| 487 xfree(layout->fields); | |
| 488 upb_msgdef_unref(layout->msgdef, &layout->msgdef); | |
| 489 xfree(layout); | |
| 490 } | |
| 491 | |
| 492 VALUE field_type_class(const upb_fielddef* field) { | |
| 493 VALUE type_class = Qnil; | |
| 494 if (upb_fielddef_type(field) == UPB_TYPE_MESSAGE) { | |
| 495 VALUE submsgdesc = | |
| 496 get_def_obj(upb_fielddef_subdef(field)); | |
| 497 type_class = Descriptor_msgclass(submsgdesc); | |
| 498 } else if (upb_fielddef_type(field) == UPB_TYPE_ENUM) { | |
| 499 VALUE subenumdesc = | |
| 500 get_def_obj(upb_fielddef_subdef(field)); | |
| 501 type_class = EnumDescriptor_enummodule(subenumdesc); | |
| 502 } | |
| 503 return type_class; | |
| 504 } | |
| 505 | |
| 506 static void* slot_memory(MessageLayout* layout, | |
| 507 const void* storage, | |
| 508 const upb_fielddef* field) { | |
| 509 return ((uint8_t *)storage) + | |
| 510 layout->fields[upb_fielddef_index(field)].offset; | |
| 511 } | |
| 512 | |
| 513 static uint32_t* slot_oneof_case(MessageLayout* layout, | |
| 514 const void* storage, | |
| 515 const upb_fielddef* field) { | |
| 516 return (uint32_t *)(((uint8_t *)storage) + | |
| 517 layout->fields[upb_fielddef_index(field)].case_offset); | |
| 518 } | |
| 519 | |
| 520 | |
| 521 VALUE layout_get(MessageLayout* layout, | |
| 522 const void* storage, | |
| 523 const upb_fielddef* field) { | |
| 524 void* memory = slot_memory(layout, storage, field); | |
| 525 uint32_t* oneof_case = slot_oneof_case(layout, storage, field); | |
| 526 | |
| 527 if (upb_fielddef_containingoneof(field)) { | |
| 528 if (*oneof_case != upb_fielddef_number(field)) { | |
| 529 return Qnil; | |
| 530 } | |
| 531 return native_slot_get(upb_fielddef_type(field), | |
| 532 field_type_class(field), | |
| 533 memory); | |
| 534 } else if (upb_fielddef_label(field) == UPB_LABEL_REPEATED) { | |
| 535 return *((VALUE *)memory); | |
| 536 } else { | |
| 537 return native_slot_get(upb_fielddef_type(field), | |
| 538 field_type_class(field), | |
| 539 memory); | |
| 540 } | |
| 541 } | |
| 542 | |
| 543 static void check_repeated_field_type(VALUE val, const upb_fielddef* field) { | |
| 544 assert(upb_fielddef_label(field) == UPB_LABEL_REPEATED); | |
| 545 | |
| 546 if (!RB_TYPE_P(val, T_DATA) || !RTYPEDDATA_P(val) || | |
| 547 RTYPEDDATA_TYPE(val) != &RepeatedField_type) { | |
| 548 rb_raise(rb_eTypeError, "Expected repeated field array"); | |
| 549 } | |
| 550 | |
| 551 RepeatedField* self = ruby_to_RepeatedField(val); | |
| 552 if (self->field_type != upb_fielddef_type(field)) { | |
| 553 rb_raise(rb_eTypeError, "Repeated field array has wrong element type"); | |
| 554 } | |
| 555 | |
| 556 if (self->field_type == UPB_TYPE_MESSAGE || | |
| 557 self->field_type == UPB_TYPE_ENUM) { | |
| 558 if (self->field_type_class != | |
| 559 get_def_obj(upb_fielddef_subdef(field))) { | |
| 560 rb_raise(rb_eTypeError, | |
| 561 "Repeated field array has wrong message/enum class"); | |
| 562 } | |
| 563 } | |
| 564 } | |
| 565 | |
| 566 static void check_map_field_type(VALUE val, const upb_fielddef* field) { | |
| 567 assert(is_map_field(field)); | |
| 568 const upb_fielddef* key_field = map_field_key(field); | |
| 569 const upb_fielddef* value_field = map_field_value(field); | |
| 570 | |
| 571 if (!RB_TYPE_P(val, T_DATA) || !RTYPEDDATA_P(val) || | |
| 572 RTYPEDDATA_TYPE(val) != &Map_type) { | |
| 573 rb_raise(rb_eTypeError, "Expected Map instance"); | |
| 574 } | |
| 575 | |
| 576 Map* self = ruby_to_Map(val); | |
| 577 if (self->key_type != upb_fielddef_type(key_field)) { | |
| 578 rb_raise(rb_eTypeError, "Map key type does not match field's key type"); | |
| 579 } | |
| 580 if (self->value_type != upb_fielddef_type(value_field)) { | |
| 581 rb_raise(rb_eTypeError, "Map value type does not match field's value type"); | |
| 582 } | |
| 583 if (upb_fielddef_type(value_field) == UPB_TYPE_MESSAGE || | |
| 584 upb_fielddef_type(value_field) == UPB_TYPE_ENUM) { | |
| 585 if (self->value_type_class != | |
| 586 get_def_obj(upb_fielddef_subdef(value_field))) { | |
| 587 rb_raise(rb_eTypeError, | |
| 588 "Map value type has wrong message/enum class"); | |
| 589 } | |
| 590 } | |
| 591 } | |
| 592 | |
| 593 | |
| 594 void layout_set(MessageLayout* layout, | |
| 595 void* storage, | |
| 596 const upb_fielddef* field, | |
| 597 VALUE val) { | |
| 598 void* memory = slot_memory(layout, storage, field); | |
| 599 uint32_t* oneof_case = slot_oneof_case(layout, storage, field); | |
| 600 | |
| 601 if (upb_fielddef_containingoneof(field)) { | |
| 602 if (val == Qnil) { | |
| 603 // Assigning nil to a oneof field clears the oneof completely. | |
| 604 *oneof_case = ONEOF_CASE_NONE; | |
| 605 memset(memory, 0, NATIVE_SLOT_MAX_SIZE); | |
| 606 } else { | |
| 607 // The transition between field types for a single oneof (union) slot is | |
| 608 // somewhat complex because we need to ensure that a GC triggered at any | |
| 609 // point by a call into the Ruby VM sees a valid state for this field and | |
| 610 // does not either go off into the weeds (following what it thinks is a | |
| 611 // VALUE but is actually a different field type) or miss an object (seeing | |
| 612 // what it thinks is a primitive field but is actually a VALUE for the new | |
| 613 // field type). | |
| 614 // | |
| 615 // In order for the transition to be safe, the oneof case slot must be in | |
| 616 // sync with the value slot whenever the Ruby VM has been called. Thus, we | |
| 617 // use native_slot_set_value_and_case(), which ensures that both the value | |
| 618 // and case number are altered atomically (w.r.t. the Ruby VM). | |
| 619 native_slot_set_value_and_case( | |
| 620 upb_fielddef_type(field), field_type_class(field), | |
| 621 memory, val, | |
| 622 oneof_case, upb_fielddef_number(field)); | |
| 623 } | |
| 624 } else if (is_map_field(field)) { | |
| 625 check_map_field_type(val, field); | |
| 626 DEREF(memory, VALUE) = val; | |
| 627 } else if (upb_fielddef_label(field) == UPB_LABEL_REPEATED) { | |
| 628 check_repeated_field_type(val, field); | |
| 629 DEREF(memory, VALUE) = val; | |
| 630 } else { | |
| 631 native_slot_set(upb_fielddef_type(field), field_type_class(field), | |
| 632 memory, val); | |
| 633 } | |
| 634 } | |
| 635 | |
| 636 void layout_init(MessageLayout* layout, | |
| 637 void* storage) { | |
| 638 upb_msg_field_iter it; | |
| 639 for (upb_msg_field_begin(&it, layout->msgdef); | |
| 640 !upb_msg_field_done(&it); | |
| 641 upb_msg_field_next(&it)) { | |
| 642 const upb_fielddef* field = upb_msg_iter_field(&it); | |
| 643 void* memory = slot_memory(layout, storage, field); | |
| 644 uint32_t* oneof_case = slot_oneof_case(layout, storage, field); | |
| 645 | |
| 646 if (upb_fielddef_containingoneof(field)) { | |
| 647 memset(memory, 0, NATIVE_SLOT_MAX_SIZE); | |
| 648 *oneof_case = ONEOF_CASE_NONE; | |
| 649 } else if (is_map_field(field)) { | |
| 650 VALUE map = Qnil; | |
| 651 | |
| 652 const upb_fielddef* key_field = map_field_key(field); | |
| 653 const upb_fielddef* value_field = map_field_value(field); | |
| 654 VALUE type_class = field_type_class(value_field); | |
| 655 | |
| 656 if (type_class != Qnil) { | |
| 657 VALUE args[3] = { | |
| 658 fieldtype_to_ruby(upb_fielddef_type(key_field)), | |
| 659 fieldtype_to_ruby(upb_fielddef_type(value_field)), | |
| 660 type_class, | |
| 661 }; | |
| 662 map = rb_class_new_instance(3, args, cMap); | |
| 663 } else { | |
| 664 VALUE args[2] = { | |
| 665 fieldtype_to_ruby(upb_fielddef_type(key_field)), | |
| 666 fieldtype_to_ruby(upb_fielddef_type(value_field)), | |
| 667 }; | |
| 668 map = rb_class_new_instance(2, args, cMap); | |
| 669 } | |
| 670 | |
| 671 DEREF(memory, VALUE) = map; | |
| 672 } else if (upb_fielddef_label(field) == UPB_LABEL_REPEATED) { | |
| 673 VALUE ary = Qnil; | |
| 674 | |
| 675 VALUE type_class = field_type_class(field); | |
| 676 | |
| 677 if (type_class != Qnil) { | |
| 678 VALUE args[2] = { | |
| 679 fieldtype_to_ruby(upb_fielddef_type(field)), | |
| 680 type_class, | |
| 681 }; | |
| 682 ary = rb_class_new_instance(2, args, cRepeatedField); | |
| 683 } else { | |
| 684 VALUE args[1] = { fieldtype_to_ruby(upb_fielddef_type(field)) }; | |
| 685 ary = rb_class_new_instance(1, args, cRepeatedField); | |
| 686 } | |
| 687 | |
| 688 DEREF(memory, VALUE) = ary; | |
| 689 } else { | |
| 690 native_slot_init(upb_fielddef_type(field), memory); | |
| 691 } | |
| 692 } | |
| 693 } | |
| 694 | |
| 695 void layout_mark(MessageLayout* layout, void* storage) { | |
| 696 upb_msg_field_iter it; | |
| 697 for (upb_msg_field_begin(&it, layout->msgdef); | |
| 698 !upb_msg_field_done(&it); | |
| 699 upb_msg_field_next(&it)) { | |
| 700 const upb_fielddef* field = upb_msg_iter_field(&it); | |
| 701 void* memory = slot_memory(layout, storage, field); | |
| 702 uint32_t* oneof_case = slot_oneof_case(layout, storage, field); | |
| 703 | |
| 704 if (upb_fielddef_containingoneof(field)) { | |
| 705 if (*oneof_case == upb_fielddef_number(field)) { | |
| 706 native_slot_mark(upb_fielddef_type(field), memory); | |
| 707 } | |
| 708 } else if (upb_fielddef_label(field) == UPB_LABEL_REPEATED) { | |
| 709 rb_gc_mark(DEREF(memory, VALUE)); | |
| 710 } else { | |
| 711 native_slot_mark(upb_fielddef_type(field), memory); | |
| 712 } | |
| 713 } | |
| 714 } | |
| 715 | |
| 716 void layout_dup(MessageLayout* layout, void* to, void* from) { | |
| 717 upb_msg_field_iter it; | |
| 718 for (upb_msg_field_begin(&it, layout->msgdef); | |
| 719 !upb_msg_field_done(&it); | |
| 720 upb_msg_field_next(&it)) { | |
| 721 const upb_fielddef* field = upb_msg_iter_field(&it); | |
| 722 | |
| 723 void* to_memory = slot_memory(layout, to, field); | |
| 724 uint32_t* to_oneof_case = slot_oneof_case(layout, to, field); | |
| 725 void* from_memory = slot_memory(layout, from, field); | |
| 726 uint32_t* from_oneof_case = slot_oneof_case(layout, from, field); | |
| 727 | |
| 728 if (upb_fielddef_containingoneof(field)) { | |
| 729 if (*from_oneof_case == upb_fielddef_number(field)) { | |
| 730 *to_oneof_case = *from_oneof_case; | |
| 731 native_slot_dup(upb_fielddef_type(field), to_memory, from_memory); | |
| 732 } | |
| 733 } else if (is_map_field(field)) { | |
| 734 DEREF(to_memory, VALUE) = Map_dup(DEREF(from_memory, VALUE)); | |
| 735 } else if (upb_fielddef_label(field) == UPB_LABEL_REPEATED) { | |
| 736 DEREF(to_memory, VALUE) = RepeatedField_dup(DEREF(from_memory, VALUE)); | |
| 737 } else { | |
| 738 native_slot_dup(upb_fielddef_type(field), to_memory, from_memory); | |
| 739 } | |
| 740 } | |
| 741 } | |
| 742 | |
| 743 void layout_deep_copy(MessageLayout* layout, void* to, void* from) { | |
| 744 upb_msg_field_iter it; | |
| 745 for (upb_msg_field_begin(&it, layout->msgdef); | |
| 746 !upb_msg_field_done(&it); | |
| 747 upb_msg_field_next(&it)) { | |
| 748 const upb_fielddef* field = upb_msg_iter_field(&it); | |
| 749 | |
| 750 void* to_memory = slot_memory(layout, to, field); | |
| 751 uint32_t* to_oneof_case = slot_oneof_case(layout, to, field); | |
| 752 void* from_memory = slot_memory(layout, from, field); | |
| 753 uint32_t* from_oneof_case = slot_oneof_case(layout, from, field); | |
| 754 | |
| 755 if (upb_fielddef_containingoneof(field)) { | |
| 756 if (*from_oneof_case == upb_fielddef_number(field)) { | |
| 757 *to_oneof_case = *from_oneof_case; | |
| 758 native_slot_deep_copy(upb_fielddef_type(field), to_memory, from_memory); | |
| 759 } | |
| 760 } else if (is_map_field(field)) { | |
| 761 DEREF(to_memory, VALUE) = | |
| 762 Map_deep_copy(DEREF(from_memory, VALUE)); | |
| 763 } else if (upb_fielddef_label(field) == UPB_LABEL_REPEATED) { | |
| 764 DEREF(to_memory, VALUE) = | |
| 765 RepeatedField_deep_copy(DEREF(from_memory, VALUE)); | |
| 766 } else { | |
| 767 native_slot_deep_copy(upb_fielddef_type(field), to_memory, from_memory); | |
| 768 } | |
| 769 } | |
| 770 } | |
| 771 | |
| 772 VALUE layout_eq(MessageLayout* layout, void* msg1, void* msg2) { | |
| 773 upb_msg_field_iter it; | |
| 774 for (upb_msg_field_begin(&it, layout->msgdef); | |
| 775 !upb_msg_field_done(&it); | |
| 776 upb_msg_field_next(&it)) { | |
| 777 const upb_fielddef* field = upb_msg_iter_field(&it); | |
| 778 | |
| 779 void* msg1_memory = slot_memory(layout, msg1, field); | |
| 780 uint32_t* msg1_oneof_case = slot_oneof_case(layout, msg1, field); | |
| 781 void* msg2_memory = slot_memory(layout, msg2, field); | |
| 782 uint32_t* msg2_oneof_case = slot_oneof_case(layout, msg2, field); | |
| 783 | |
| 784 if (upb_fielddef_containingoneof(field)) { | |
| 785 if (*msg1_oneof_case != *msg2_oneof_case || | |
| 786 (*msg1_oneof_case == upb_fielddef_number(field) && | |
| 787 !native_slot_eq(upb_fielddef_type(field), | |
| 788 msg1_memory, | |
| 789 msg2_memory))) { | |
| 790 return Qfalse; | |
| 791 } | |
| 792 } else if (is_map_field(field)) { | |
| 793 if (!Map_eq(DEREF(msg1_memory, VALUE), | |
| 794 DEREF(msg2_memory, VALUE))) { | |
| 795 return Qfalse; | |
| 796 } | |
| 797 } else if (upb_fielddef_label(field) == UPB_LABEL_REPEATED) { | |
| 798 if (!RepeatedField_eq(DEREF(msg1_memory, VALUE), | |
| 799 DEREF(msg2_memory, VALUE))) { | |
| 800 return Qfalse; | |
| 801 } | |
| 802 } else { | |
| 803 if (!native_slot_eq(upb_fielddef_type(field), | |
| 804 msg1_memory, msg2_memory)) { | |
| 805 return Qfalse; | |
| 806 } | |
| 807 } | |
| 808 } | |
| 809 return Qtrue; | |
| 810 } | |
| 811 | |
| 812 VALUE layout_hash(MessageLayout* layout, void* storage) { | |
| 813 upb_msg_field_iter it; | |
| 814 st_index_t h = rb_hash_start(0); | |
| 815 VALUE hash_sym = rb_intern("hash"); | |
| 816 for (upb_msg_field_begin(&it, layout->msgdef); | |
| 817 !upb_msg_field_done(&it); | |
| 818 upb_msg_field_next(&it)) { | |
| 819 const upb_fielddef* field = upb_msg_iter_field(&it); | |
| 820 VALUE field_val = layout_get(layout, storage, field); | |
| 821 h = rb_hash_uint(h, NUM2LONG(rb_funcall(field_val, hash_sym, 0))); | |
| 822 } | |
| 823 h = rb_hash_end(h); | |
| 824 | |
| 825 return INT2FIX(h); | |
| 826 } | |
| 827 | |
| 828 VALUE layout_inspect(MessageLayout* layout, void* storage) { | |
| 829 VALUE str = rb_str_new2(""); | |
| 830 | |
| 831 upb_msg_field_iter it; | |
| 832 bool first = true; | |
| 833 for (upb_msg_field_begin(&it, layout->msgdef); | |
| 834 !upb_msg_field_done(&it); | |
| 835 upb_msg_field_next(&it)) { | |
| 836 const upb_fielddef* field = upb_msg_iter_field(&it); | |
| 837 VALUE field_val = layout_get(layout, storage, field); | |
| 838 | |
| 839 if (!first) { | |
| 840 str = rb_str_cat2(str, ", "); | |
| 841 } else { | |
| 842 first = false; | |
| 843 } | |
| 844 str = rb_str_cat2(str, upb_fielddef_name(field)); | |
| 845 str = rb_str_cat2(str, ": "); | |
| 846 | |
| 847 str = rb_str_append(str, rb_funcall(field_val, rb_intern("inspect"), 0)); | |
| 848 } | |
| 849 | |
| 850 return str; | |
| 851 } | |
| OLD | NEW |
|---|
Chromium Code Reviews
Issue 1322483002:
Revert https://codereview.chromium.org/1291903002 (protobuf roll). (Closed)
Base URL: https://chromium.googlesource.com/chromium/src.git@master