diff options
Diffstat (limited to 'src/3rdparty/v8/src/regexp-macro-assembler.h')
| -rw-r--r-- | src/3rdparty/v8/src/regexp-macro-assembler.h | 270 |
1 files changed, 0 insertions, 270 deletions
diff --git a/src/3rdparty/v8/src/regexp-macro-assembler.h b/src/3rdparty/v8/src/regexp-macro-assembler.h deleted file mode 100644 index 211ab6b..0000000 --- a/src/3rdparty/v8/src/regexp-macro-assembler.h +++ /dev/null @@ -1,270 +0,0 @@ -// Copyright 2012 the V8 project authors. All rights reserved. -// Redistribution and use in source and binary forms, with or without -// modification, are permitted provided that the following conditions are -// met: -// -// * Redistributions of source code must retain the above copyright -// notice, this list of conditions and the following disclaimer. -// * Redistributions in binary form must reproduce the above -// copyright notice, this list of conditions and the following -// disclaimer in the documentation and/or other materials provided -// with the distribution. -// * Neither the name of Google Inc. nor the names of its -// contributors may be used to endorse or promote products derived -// from this software without specific prior written permission. -// -// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS -// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT -// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR -// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT -// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, -// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT -// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, -// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY -// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT -// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE -// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - -#ifndef V8_REGEXP_MACRO_ASSEMBLER_H_ -#define V8_REGEXP_MACRO_ASSEMBLER_H_ - -#include "ast.h" - -namespace v8 { -namespace internal { - -struct DisjunctDecisionRow { - RegExpCharacterClass cc; - Label* on_match; -}; - - -class RegExpMacroAssembler { - public: - // The implementation must be able to handle at least: - static const int kMaxRegister = (1 << 16) - 1; - static const int kMaxCPOffset = (1 << 15) - 1; - static const int kMinCPOffset = -(1 << 15); - - static const int kTableSizeBits = 7; - static const int kTableSize = 1 << kTableSizeBits; - static const int kTableMask = kTableSize - 1; - - enum IrregexpImplementation { - kIA32Implementation, - kARMImplementation, - kMIPSImplementation, - kX64Implementation, - kBytecodeImplementation - }; - - enum StackCheckFlag { - kNoStackLimitCheck = false, - kCheckStackLimit = true - }; - - explicit RegExpMacroAssembler(Zone* zone); - virtual ~RegExpMacroAssembler(); - // The maximal number of pushes between stack checks. Users must supply - // kCheckStackLimit flag to push operations (instead of kNoStackLimitCheck) - // at least once for every stack_limit() pushes that are executed. - virtual int stack_limit_slack() = 0; - virtual bool CanReadUnaligned(); - virtual void AdvanceCurrentPosition(int by) = 0; // Signed cp change. - virtual void AdvanceRegister(int reg, int by) = 0; // r[reg] += by. - // Continues execution from the position pushed on the top of the backtrack - // stack by an earlier PushBacktrack(Label*). - virtual void Backtrack() = 0; - virtual void Bind(Label* label) = 0; - virtual void CheckAtStart(Label* on_at_start) = 0; - // Dispatch after looking the current character up in a 2-bits-per-entry - // map. The destinations vector has up to 4 labels. - virtual void CheckCharacter(unsigned c, Label* on_equal) = 0; - // Bitwise and the current character with the given constant and then - // check for a match with c. - virtual void CheckCharacterAfterAnd(unsigned c, - unsigned and_with, - Label* on_equal) = 0; - virtual void CheckCharacterGT(uc16 limit, Label* on_greater) = 0; - virtual void CheckCharacterLT(uc16 limit, Label* on_less) = 0; - // Check the current character for a match with a literal string. If we - // fail to match then goto the on_failure label. If check_eos is set then - // the end of input always fails. If check_eos is clear then it is the - // caller's responsibility to ensure that the end of string is not hit. - // If the label is NULL then we should pop a backtrack address off - // the stack and go to that. - virtual void CheckCharacters( - Vector<const uc16> str, - int cp_offset, - Label* on_failure, - bool check_eos) = 0; - virtual void CheckGreedyLoop(Label* on_tos_equals_current_position) = 0; - virtual void CheckNotAtStart(Label* on_not_at_start) = 0; - virtual void CheckNotBackReference(int start_reg, Label* on_no_match) = 0; - virtual void CheckNotBackReferenceIgnoreCase(int start_reg, - Label* on_no_match) = 0; - // Check the current character for a match with a literal character. If we - // fail to match then goto the on_failure label. End of input always - // matches. If the label is NULL then we should pop a backtrack address off - // the stack and go to that. - virtual void CheckNotCharacter(unsigned c, Label* on_not_equal) = 0; - virtual void CheckNotCharacterAfterAnd(unsigned c, - unsigned and_with, - Label* on_not_equal) = 0; - // Subtract a constant from the current character, then and with the given - // constant and then check for a match with c. - virtual void CheckNotCharacterAfterMinusAnd(uc16 c, - uc16 minus, - uc16 and_with, - Label* on_not_equal) = 0; - virtual void CheckCharacterInRange(uc16 from, - uc16 to, // Both inclusive. - Label* on_in_range) = 0; - virtual void CheckCharacterNotInRange(uc16 from, - uc16 to, // Both inclusive. - Label* on_not_in_range) = 0; - - // The current character (modulus the kTableSize) is looked up in the byte - // array, and if the found byte is non-zero, we jump to the on_bit_set label. - virtual void CheckBitInTable(Handle<ByteArray> table, Label* on_bit_set) = 0; - - // Checks whether the given offset from the current position is before - // the end of the string. May overwrite the current character. - virtual void CheckPosition(int cp_offset, Label* on_outside_input) { - LoadCurrentCharacter(cp_offset, on_outside_input, true); - } - // Check whether a standard/default character class matches the current - // character. Returns false if the type of special character class does - // not have custom support. - // May clobber the current loaded character. - virtual bool CheckSpecialCharacterClass(uc16 type, - Label* on_no_match) { - return false; - } - virtual void Fail() = 0; - virtual Handle<HeapObject> GetCode(Handle<String> source) = 0; - virtual void GoTo(Label* label) = 0; - // Check whether a register is >= a given constant and go to a label if it - // is. Backtracks instead if the label is NULL. - virtual void IfRegisterGE(int reg, int comparand, Label* if_ge) = 0; - // Check whether a register is < a given constant and go to a label if it is. - // Backtracks instead if the label is NULL. - virtual void IfRegisterLT(int reg, int comparand, Label* if_lt) = 0; - // Check whether a register is == to the current position and go to a - // label if it is. - virtual void IfRegisterEqPos(int reg, Label* if_eq) = 0; - virtual IrregexpImplementation Implementation() = 0; - virtual void LoadCurrentCharacter(int cp_offset, - Label* on_end_of_input, - bool check_bounds = true, - int characters = 1) = 0; - virtual void PopCurrentPosition() = 0; - virtual void PopRegister(int register_index) = 0; - // Pushes the label on the backtrack stack, so that a following Backtrack - // will go to this label. Always checks the backtrack stack limit. - virtual void PushBacktrack(Label* label) = 0; - virtual void PushCurrentPosition() = 0; - virtual void PushRegister(int register_index, - StackCheckFlag check_stack_limit) = 0; - virtual void ReadCurrentPositionFromRegister(int reg) = 0; - virtual void ReadStackPointerFromRegister(int reg) = 0; - virtual void SetCurrentPositionFromEnd(int by) = 0; - virtual void SetRegister(int register_index, int to) = 0; - // Return whether the matching (with a global regexp) will be restarted. - virtual bool Succeed() = 0; - virtual void WriteCurrentPositionToRegister(int reg, int cp_offset) = 0; - virtual void ClearRegisters(int reg_from, int reg_to) = 0; - virtual void WriteStackPointerToRegister(int reg) = 0; - - // Controls the generation of large inlined constants in the code. - void set_slow_safe(bool ssc) { slow_safe_compiler_ = ssc; } - bool slow_safe() { return slow_safe_compiler_; } - - enum GlobalMode { NOT_GLOBAL, GLOBAL, GLOBAL_NO_ZERO_LENGTH_CHECK }; - // Set whether the regular expression has the global flag. Exiting due to - // a failure in a global regexp may still mean success overall. - inline void set_global_mode(GlobalMode mode) { global_mode_ = mode; } - inline bool global() { return global_mode_ != NOT_GLOBAL; } - inline bool global_with_zero_length_check() { - return global_mode_ == GLOBAL; - } - - Zone* zone() const { return zone_; } - - private: - bool slow_safe_compiler_; - bool global_mode_; - Zone* zone_; -}; - - -#ifndef V8_INTERPRETED_REGEXP // Avoid compiling unused code. - -class NativeRegExpMacroAssembler: public RegExpMacroAssembler { - public: - // Type of input string to generate code for. - enum Mode { ASCII = 1, UC16 = 2 }; - - // Result of calling generated native RegExp code. - // RETRY: Something significant changed during execution, and the matching - // should be retried from scratch. - // EXCEPTION: Something failed during execution. If no exception has been - // thrown, it's an internal out-of-memory, and the caller should - // throw the exception. - // FAILURE: Matching failed. - // SUCCESS: Matching succeeded, and the output array has been filled with - // capture positions. - enum Result { RETRY = -2, EXCEPTION = -1, FAILURE = 0, SUCCESS = 1 }; - - explicit NativeRegExpMacroAssembler(Zone* zone); - virtual ~NativeRegExpMacroAssembler(); - virtual bool CanReadUnaligned(); - - static Result Match(Handle<Code> regexp, - Handle<String> subject, - int* offsets_vector, - int offsets_vector_length, - int previous_index, - Isolate* isolate); - - // Compares two-byte strings case insensitively. - // Called from generated RegExp code. - static int CaseInsensitiveCompareUC16(Address byte_offset1, - Address byte_offset2, - size_t byte_length, - Isolate* isolate); - - // Called from RegExp if the backtrack stack limit is hit. - // Tries to expand the stack. Returns the new stack-pointer if - // successful, and updates the stack_top address, or returns 0 if unable - // to grow the stack. - // This function must not trigger a garbage collection. - static Address GrowStack(Address stack_pointer, Address* stack_top, - Isolate* isolate); - - static const byte* StringCharacterPosition(String* subject, int start_index); - - // Byte map of one byte characters with a 0xff if the character is a word - // character (digit, letter or underscore) and 0x00 otherwise. - // Used by generated RegExp code. - static const byte word_character_map[256]; - - static Address word_character_map_address() { - return const_cast<Address>(&word_character_map[0]); - } - - static Result Execute(Code* code, - String* input, - int start_offset, - const byte* input_start, - const byte* input_end, - int* output, - int output_size, - Isolate* isolate); -}; - -#endif // V8_INTERPRETED_REGEXP - -} } // namespace v8::internal - -#endif // V8_REGEXP_MACRO_ASSEMBLER_H_ |