Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1 | // Copyright 2008-2009 the V8 project authors. All rights reserved. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 2 | // Use of this source code is governed by a BSD-style license that can be |
| 3 | // found in the LICENSE file. |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 5 | #include "src/v8.h" |
| 6 | |
| 7 | #include "src/ast.h" |
| 8 | #include "src/bytecodes-irregexp.h" |
| 9 | #include "src/regexp-macro-assembler.h" |
| 10 | #include "src/regexp-macro-assembler-irregexp.h" |
| 11 | #include "src/regexp-macro-assembler-irregexp-inl.h" |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 12 | |
| 13 | |
| 14 | namespace v8 { |
| 15 | namespace internal { |
| 16 | |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 17 | #ifdef V8_INTERPRETED_REGEXP |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 18 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 19 | RegExpMacroAssemblerIrregexp::RegExpMacroAssemblerIrregexp(Vector<byte> buffer, |
| 20 | Zone* zone) |
| 21 | : RegExpMacroAssembler(zone), |
| 22 | buffer_(buffer), |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 23 | pc_(0), |
| 24 | own_buffer_(false), |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 25 | advance_current_end_(kInvalidPC), |
| 26 | isolate_(zone->isolate()) { } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 27 | |
| 28 | |
| 29 | RegExpMacroAssemblerIrregexp::~RegExpMacroAssemblerIrregexp() { |
| 30 | if (backtrack_.is_linked()) backtrack_.Unuse(); |
| 31 | if (own_buffer_) buffer_.Dispose(); |
| 32 | } |
| 33 | |
| 34 | |
| 35 | RegExpMacroAssemblerIrregexp::IrregexpImplementation |
| 36 | RegExpMacroAssemblerIrregexp::Implementation() { |
| 37 | return kBytecodeImplementation; |
| 38 | } |
| 39 | |
| 40 | |
| 41 | void RegExpMacroAssemblerIrregexp::Bind(Label* l) { |
| 42 | advance_current_end_ = kInvalidPC; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 43 | DCHECK(!l->is_bound()); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 44 | if (l->is_linked()) { |
| 45 | int pos = l->pos(); |
| 46 | while (pos != 0) { |
| 47 | int fixup = pos; |
| 48 | pos = *reinterpret_cast<int32_t*>(buffer_.start() + fixup); |
| 49 | *reinterpret_cast<uint32_t*>(buffer_.start() + fixup) = pc_; |
| 50 | } |
| 51 | } |
| 52 | l->bind_to(pc_); |
| 53 | } |
| 54 | |
| 55 | |
| 56 | void RegExpMacroAssemblerIrregexp::EmitOrLink(Label* l) { |
| 57 | if (l == NULL) l = &backtrack_; |
| 58 | if (l->is_bound()) { |
| 59 | Emit32(l->pos()); |
| 60 | } else { |
| 61 | int pos = 0; |
| 62 | if (l->is_linked()) { |
| 63 | pos = l->pos(); |
| 64 | } |
| 65 | l->link_to(pc_); |
| 66 | Emit32(pos); |
| 67 | } |
| 68 | } |
| 69 | |
| 70 | |
| 71 | void RegExpMacroAssemblerIrregexp::PopRegister(int register_index) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 72 | DCHECK(register_index >= 0); |
| 73 | DCHECK(register_index <= kMaxRegister); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 74 | Emit(BC_POP_REGISTER, register_index); |
| 75 | } |
| 76 | |
| 77 | |
| 78 | void RegExpMacroAssemblerIrregexp::PushRegister( |
| 79 | int register_index, |
| 80 | StackCheckFlag check_stack_limit) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 81 | DCHECK(register_index >= 0); |
| 82 | DCHECK(register_index <= kMaxRegister); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 83 | Emit(BC_PUSH_REGISTER, register_index); |
| 84 | } |
| 85 | |
| 86 | |
| 87 | void RegExpMacroAssemblerIrregexp::WriteCurrentPositionToRegister( |
| 88 | int register_index, int cp_offset) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 89 | DCHECK(register_index >= 0); |
| 90 | DCHECK(register_index <= kMaxRegister); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 91 | Emit(BC_SET_REGISTER_TO_CP, register_index); |
| 92 | Emit32(cp_offset); // Current position offset. |
| 93 | } |
| 94 | |
| 95 | |
| 96 | void RegExpMacroAssemblerIrregexp::ClearRegisters(int reg_from, int reg_to) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 97 | DCHECK(reg_from <= reg_to); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 98 | for (int reg = reg_from; reg <= reg_to; reg++) { |
| 99 | SetRegister(reg, -1); |
| 100 | } |
| 101 | } |
| 102 | |
| 103 | |
| 104 | void RegExpMacroAssemblerIrregexp::ReadCurrentPositionFromRegister( |
| 105 | int register_index) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 106 | DCHECK(register_index >= 0); |
| 107 | DCHECK(register_index <= kMaxRegister); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 108 | Emit(BC_SET_CP_TO_REGISTER, register_index); |
| 109 | } |
| 110 | |
| 111 | |
| 112 | void RegExpMacroAssemblerIrregexp::WriteStackPointerToRegister( |
| 113 | int register_index) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 114 | DCHECK(register_index >= 0); |
| 115 | DCHECK(register_index <= kMaxRegister); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 116 | Emit(BC_SET_REGISTER_TO_SP, register_index); |
| 117 | } |
| 118 | |
| 119 | |
| 120 | void RegExpMacroAssemblerIrregexp::ReadStackPointerFromRegister( |
| 121 | int register_index) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 122 | DCHECK(register_index >= 0); |
| 123 | DCHECK(register_index <= kMaxRegister); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 124 | Emit(BC_SET_SP_TO_REGISTER, register_index); |
| 125 | } |
| 126 | |
| 127 | |
Ben Murdoch | f87a203 | 2010-10-22 12:50:53 +0100 | [diff] [blame] | 128 | void RegExpMacroAssemblerIrregexp::SetCurrentPositionFromEnd(int by) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 129 | DCHECK(is_uint24(by)); |
Ben Murdoch | f87a203 | 2010-10-22 12:50:53 +0100 | [diff] [blame] | 130 | Emit(BC_SET_CURRENT_POSITION_FROM_END, by); |
| 131 | } |
| 132 | |
| 133 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 134 | void RegExpMacroAssemblerIrregexp::SetRegister(int register_index, int to) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 135 | DCHECK(register_index >= 0); |
| 136 | DCHECK(register_index <= kMaxRegister); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 137 | Emit(BC_SET_REGISTER, register_index); |
| 138 | Emit32(to); |
| 139 | } |
| 140 | |
| 141 | |
| 142 | void RegExpMacroAssemblerIrregexp::AdvanceRegister(int register_index, int by) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 143 | DCHECK(register_index >= 0); |
| 144 | DCHECK(register_index <= kMaxRegister); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 145 | Emit(BC_ADVANCE_REGISTER, register_index); |
| 146 | Emit32(by); |
| 147 | } |
| 148 | |
| 149 | |
| 150 | void RegExpMacroAssemblerIrregexp::PopCurrentPosition() { |
| 151 | Emit(BC_POP_CP, 0); |
| 152 | } |
| 153 | |
| 154 | |
| 155 | void RegExpMacroAssemblerIrregexp::PushCurrentPosition() { |
| 156 | Emit(BC_PUSH_CP, 0); |
| 157 | } |
| 158 | |
| 159 | |
| 160 | void RegExpMacroAssemblerIrregexp::Backtrack() { |
| 161 | Emit(BC_POP_BT, 0); |
| 162 | } |
| 163 | |
| 164 | |
| 165 | void RegExpMacroAssemblerIrregexp::GoTo(Label* l) { |
| 166 | if (advance_current_end_ == pc_) { |
| 167 | // Combine advance current and goto. |
| 168 | pc_ = advance_current_start_; |
| 169 | Emit(BC_ADVANCE_CP_AND_GOTO, advance_current_offset_); |
| 170 | EmitOrLink(l); |
| 171 | advance_current_end_ = kInvalidPC; |
| 172 | } else { |
| 173 | // Regular goto. |
| 174 | Emit(BC_GOTO, 0); |
| 175 | EmitOrLink(l); |
| 176 | } |
| 177 | } |
| 178 | |
| 179 | |
| 180 | void RegExpMacroAssemblerIrregexp::PushBacktrack(Label* l) { |
| 181 | Emit(BC_PUSH_BT, 0); |
| 182 | EmitOrLink(l); |
| 183 | } |
| 184 | |
| 185 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 186 | bool RegExpMacroAssemblerIrregexp::Succeed() { |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 187 | Emit(BC_SUCCEED, 0); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 188 | return false; // Restart matching for global regexp not supported. |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 189 | } |
| 190 | |
| 191 | |
| 192 | void RegExpMacroAssemblerIrregexp::Fail() { |
| 193 | Emit(BC_FAIL, 0); |
| 194 | } |
| 195 | |
| 196 | |
| 197 | void RegExpMacroAssemblerIrregexp::AdvanceCurrentPosition(int by) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 198 | DCHECK(by >= kMinCPOffset); |
| 199 | DCHECK(by <= kMaxCPOffset); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 200 | advance_current_start_ = pc_; |
| 201 | advance_current_offset_ = by; |
| 202 | Emit(BC_ADVANCE_CP, by); |
| 203 | advance_current_end_ = pc_; |
| 204 | } |
| 205 | |
| 206 | |
| 207 | void RegExpMacroAssemblerIrregexp::CheckGreedyLoop( |
| 208 | Label* on_tos_equals_current_position) { |
| 209 | Emit(BC_CHECK_GREEDY, 0); |
| 210 | EmitOrLink(on_tos_equals_current_position); |
| 211 | } |
| 212 | |
| 213 | |
| 214 | void RegExpMacroAssemblerIrregexp::LoadCurrentCharacter(int cp_offset, |
| 215 | Label* on_failure, |
| 216 | bool check_bounds, |
| 217 | int characters) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 218 | DCHECK(cp_offset >= kMinCPOffset); |
| 219 | DCHECK(cp_offset <= kMaxCPOffset); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 220 | int bytecode; |
| 221 | if (check_bounds) { |
| 222 | if (characters == 4) { |
| 223 | bytecode = BC_LOAD_4_CURRENT_CHARS; |
| 224 | } else if (characters == 2) { |
| 225 | bytecode = BC_LOAD_2_CURRENT_CHARS; |
| 226 | } else { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 227 | DCHECK(characters == 1); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 228 | bytecode = BC_LOAD_CURRENT_CHAR; |
| 229 | } |
| 230 | } else { |
| 231 | if (characters == 4) { |
| 232 | bytecode = BC_LOAD_4_CURRENT_CHARS_UNCHECKED; |
| 233 | } else if (characters == 2) { |
| 234 | bytecode = BC_LOAD_2_CURRENT_CHARS_UNCHECKED; |
| 235 | } else { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 236 | DCHECK(characters == 1); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 237 | bytecode = BC_LOAD_CURRENT_CHAR_UNCHECKED; |
| 238 | } |
| 239 | } |
| 240 | Emit(bytecode, cp_offset); |
| 241 | if (check_bounds) EmitOrLink(on_failure); |
| 242 | } |
| 243 | |
| 244 | |
| 245 | void RegExpMacroAssemblerIrregexp::CheckCharacterLT(uc16 limit, |
| 246 | Label* on_less) { |
| 247 | Emit(BC_CHECK_LT, limit); |
| 248 | EmitOrLink(on_less); |
| 249 | } |
| 250 | |
| 251 | |
| 252 | void RegExpMacroAssemblerIrregexp::CheckCharacterGT(uc16 limit, |
| 253 | Label* on_greater) { |
| 254 | Emit(BC_CHECK_GT, limit); |
| 255 | EmitOrLink(on_greater); |
| 256 | } |
| 257 | |
| 258 | |
| 259 | void RegExpMacroAssemblerIrregexp::CheckCharacter(uint32_t c, Label* on_equal) { |
| 260 | if (c > MAX_FIRST_ARG) { |
| 261 | Emit(BC_CHECK_4_CHARS, 0); |
| 262 | Emit32(c); |
| 263 | } else { |
| 264 | Emit(BC_CHECK_CHAR, c); |
| 265 | } |
| 266 | EmitOrLink(on_equal); |
| 267 | } |
| 268 | |
| 269 | |
| 270 | void RegExpMacroAssemblerIrregexp::CheckAtStart(Label* on_at_start) { |
| 271 | Emit(BC_CHECK_AT_START, 0); |
| 272 | EmitOrLink(on_at_start); |
| 273 | } |
| 274 | |
| 275 | |
| 276 | void RegExpMacroAssemblerIrregexp::CheckNotAtStart(Label* on_not_at_start) { |
| 277 | Emit(BC_CHECK_NOT_AT_START, 0); |
| 278 | EmitOrLink(on_not_at_start); |
| 279 | } |
| 280 | |
| 281 | |
| 282 | void RegExpMacroAssemblerIrregexp::CheckNotCharacter(uint32_t c, |
| 283 | Label* on_not_equal) { |
| 284 | if (c > MAX_FIRST_ARG) { |
| 285 | Emit(BC_CHECK_NOT_4_CHARS, 0); |
| 286 | Emit32(c); |
| 287 | } else { |
| 288 | Emit(BC_CHECK_NOT_CHAR, c); |
| 289 | } |
| 290 | EmitOrLink(on_not_equal); |
| 291 | } |
| 292 | |
| 293 | |
| 294 | void RegExpMacroAssemblerIrregexp::CheckCharacterAfterAnd( |
| 295 | uint32_t c, |
| 296 | uint32_t mask, |
| 297 | Label* on_equal) { |
| 298 | if (c > MAX_FIRST_ARG) { |
| 299 | Emit(BC_AND_CHECK_4_CHARS, 0); |
| 300 | Emit32(c); |
| 301 | } else { |
| 302 | Emit(BC_AND_CHECK_CHAR, c); |
| 303 | } |
| 304 | Emit32(mask); |
| 305 | EmitOrLink(on_equal); |
| 306 | } |
| 307 | |
| 308 | |
| 309 | void RegExpMacroAssemblerIrregexp::CheckNotCharacterAfterAnd( |
| 310 | uint32_t c, |
| 311 | uint32_t mask, |
| 312 | Label* on_not_equal) { |
| 313 | if (c > MAX_FIRST_ARG) { |
| 314 | Emit(BC_AND_CHECK_NOT_4_CHARS, 0); |
| 315 | Emit32(c); |
| 316 | } else { |
| 317 | Emit(BC_AND_CHECK_NOT_CHAR, c); |
| 318 | } |
| 319 | Emit32(mask); |
| 320 | EmitOrLink(on_not_equal); |
| 321 | } |
| 322 | |
| 323 | |
| 324 | void RegExpMacroAssemblerIrregexp::CheckNotCharacterAfterMinusAnd( |
| 325 | uc16 c, |
| 326 | uc16 minus, |
| 327 | uc16 mask, |
| 328 | Label* on_not_equal) { |
| 329 | Emit(BC_MINUS_AND_CHECK_NOT_CHAR, c); |
| 330 | Emit16(minus); |
| 331 | Emit16(mask); |
| 332 | EmitOrLink(on_not_equal); |
| 333 | } |
| 334 | |
| 335 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 336 | void RegExpMacroAssemblerIrregexp::CheckCharacterInRange( |
| 337 | uc16 from, |
| 338 | uc16 to, |
| 339 | Label* on_in_range) { |
| 340 | Emit(BC_CHECK_CHAR_IN_RANGE, 0); |
| 341 | Emit16(from); |
| 342 | Emit16(to); |
| 343 | EmitOrLink(on_in_range); |
| 344 | } |
| 345 | |
| 346 | |
| 347 | void RegExpMacroAssemblerIrregexp::CheckCharacterNotInRange( |
| 348 | uc16 from, |
| 349 | uc16 to, |
| 350 | Label* on_not_in_range) { |
| 351 | Emit(BC_CHECK_CHAR_NOT_IN_RANGE, 0); |
| 352 | Emit16(from); |
| 353 | Emit16(to); |
| 354 | EmitOrLink(on_not_in_range); |
| 355 | } |
| 356 | |
| 357 | |
| 358 | void RegExpMacroAssemblerIrregexp::CheckBitInTable( |
| 359 | Handle<ByteArray> table, Label* on_bit_set) { |
| 360 | Emit(BC_CHECK_BIT_IN_TABLE, 0); |
| 361 | EmitOrLink(on_bit_set); |
| 362 | for (int i = 0; i < kTableSize; i += kBitsPerByte) { |
| 363 | int byte = 0; |
| 364 | for (int j = 0; j < kBitsPerByte; j++) { |
| 365 | if (table->get(i + j) != 0) byte |= 1 << j; |
| 366 | } |
| 367 | Emit8(byte); |
| 368 | } |
| 369 | } |
| 370 | |
| 371 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 372 | void RegExpMacroAssemblerIrregexp::CheckNotBackReference(int start_reg, |
| 373 | Label* on_not_equal) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 374 | DCHECK(start_reg >= 0); |
| 375 | DCHECK(start_reg <= kMaxRegister); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 376 | Emit(BC_CHECK_NOT_BACK_REF, start_reg); |
| 377 | EmitOrLink(on_not_equal); |
| 378 | } |
| 379 | |
| 380 | |
| 381 | void RegExpMacroAssemblerIrregexp::CheckNotBackReferenceIgnoreCase( |
| 382 | int start_reg, |
| 383 | Label* on_not_equal) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 384 | DCHECK(start_reg >= 0); |
| 385 | DCHECK(start_reg <= kMaxRegister); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 386 | Emit(BC_CHECK_NOT_BACK_REF_NO_CASE, start_reg); |
| 387 | EmitOrLink(on_not_equal); |
| 388 | } |
| 389 | |
| 390 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 391 | void RegExpMacroAssemblerIrregexp::IfRegisterLT(int register_index, |
| 392 | int comparand, |
| 393 | Label* on_less_than) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 394 | DCHECK(register_index >= 0); |
| 395 | DCHECK(register_index <= kMaxRegister); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 396 | Emit(BC_CHECK_REGISTER_LT, register_index); |
| 397 | Emit32(comparand); |
| 398 | EmitOrLink(on_less_than); |
| 399 | } |
| 400 | |
| 401 | |
| 402 | void RegExpMacroAssemblerIrregexp::IfRegisterGE(int register_index, |
| 403 | int comparand, |
| 404 | Label* on_greater_or_equal) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 405 | DCHECK(register_index >= 0); |
| 406 | DCHECK(register_index <= kMaxRegister); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 407 | Emit(BC_CHECK_REGISTER_GE, register_index); |
| 408 | Emit32(comparand); |
| 409 | EmitOrLink(on_greater_or_equal); |
| 410 | } |
| 411 | |
| 412 | |
| 413 | void RegExpMacroAssemblerIrregexp::IfRegisterEqPos(int register_index, |
| 414 | Label* on_eq) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 415 | DCHECK(register_index >= 0); |
| 416 | DCHECK(register_index <= kMaxRegister); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 417 | Emit(BC_CHECK_REGISTER_EQ_POS, register_index); |
| 418 | EmitOrLink(on_eq); |
| 419 | } |
| 420 | |
| 421 | |
Steve Block | 053d10c | 2011-06-13 19:13:29 +0100 | [diff] [blame] | 422 | Handle<HeapObject> RegExpMacroAssemblerIrregexp::GetCode( |
| 423 | Handle<String> source) { |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 424 | Bind(&backtrack_); |
| 425 | Emit(BC_POP_BT, 0); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 426 | Handle<ByteArray> array = isolate_->factory()->NewByteArray(length()); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 427 | Copy(array->GetDataStartAddress()); |
| 428 | return array; |
| 429 | } |
| 430 | |
| 431 | |
| 432 | int RegExpMacroAssemblerIrregexp::length() { |
| 433 | return pc_; |
| 434 | } |
| 435 | |
| 436 | |
| 437 | void RegExpMacroAssemblerIrregexp::Copy(Address a) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 438 | MemCopy(a, buffer_.start(), length()); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 439 | } |
| 440 | |
| 441 | |
| 442 | void RegExpMacroAssemblerIrregexp::Expand() { |
| 443 | bool old_buffer_was_our_own = own_buffer_; |
| 444 | Vector<byte> old_buffer = buffer_; |
| 445 | buffer_ = Vector<byte>::New(old_buffer.length() * 2); |
| 446 | own_buffer_ = true; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 447 | MemCopy(buffer_.start(), old_buffer.start(), old_buffer.length()); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 448 | if (old_buffer_was_our_own) { |
| 449 | old_buffer.Dispose(); |
| 450 | } |
| 451 | } |
| 452 | |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 453 | #endif // V8_INTERPRETED_REGEXP |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 454 | |
| 455 | } } // namespace v8::internal |