2012-05-22 14:05:44 +00:00
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// Copyright 2012 the V8 project authors. All rights reserved.
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2008-11-25 11:07:48 +00:00
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are
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// met:
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//
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// * Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above
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// copyright notice, this list of conditions and the following
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// disclaimer in the documentation and/or other materials provided
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// with the distribution.
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// * Neither the name of Google Inc. nor the names of its
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// contributors may be used to endorse or promote products derived
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// from this software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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#ifndef V8_REGEXP_MACRO_ASSEMBLER_IRREGEXP_H_
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#define V8_REGEXP_MACRO_ASSEMBLER_IRREGEXP_H_
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2009-05-25 10:05:56 +00:00
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namespace v8 {
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namespace internal {
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2008-11-25 11:07:48 +00:00
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2010-04-19 19:30:11 +00:00
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#ifdef V8_INTERPRETED_REGEXP
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2008-11-25 11:07:48 +00:00
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class RegExpMacroAssemblerIrregexp: public RegExpMacroAssembler {
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public:
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2008-11-28 10:37:06 +00:00
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// Create an assembler. Instructions and relocation information are emitted
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// into a buffer, with the instructions starting from the beginning and the
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// relocation information starting from the end of the buffer. See CodeDesc
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// for a detailed comment on the layout (globals.h).
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//
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// If the provided buffer is NULL, the assembler allocates and grows its own
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// buffer, and buffer_size determines the initial buffer size. The buffer is
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// owned by the assembler and deallocated upon destruction of the assembler.
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//
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// If the provided buffer is not NULL, the assembler uses the provided buffer
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// for code generation and assumes its size to be buffer_size. If the buffer
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// is too small, a fatal error occurs. No deallocation of the buffer is done
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// upon destruction of the assembler.
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2012-06-14 17:06:16 +00:00
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RegExpMacroAssemblerIrregexp(Vector<byte>, Zone* zone);
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virtual ~RegExpMacroAssemblerIrregexp();
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2009-01-12 13:05:23 +00:00
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// The byte-code interpreter checks on each push anyway.
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virtual int stack_limit_slack() { return 1; }
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virtual void Bind(Label* label);
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virtual void AdvanceCurrentPosition(int by); // Signed cp change.
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virtual void PopCurrentPosition();
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virtual void PushCurrentPosition();
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virtual void Backtrack();
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virtual void GoTo(Label* label);
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virtual void PushBacktrack(Label* label);
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virtual bool Succeed();
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virtual void Fail();
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virtual void PopRegister(int register_index);
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2009-01-12 13:05:23 +00:00
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virtual void PushRegister(int register_index,
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StackCheckFlag check_stack_limit);
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virtual void AdvanceRegister(int reg, int by); // r[reg] += by.
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2010-10-19 14:00:01 +00:00
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virtual void SetCurrentPositionFromEnd(int by);
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virtual void SetRegister(int register_index, int to);
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2008-12-08 09:22:12 +00:00
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virtual void WriteCurrentPositionToRegister(int reg, int cp_offset);
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2009-01-26 14:38:17 +00:00
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virtual void ClearRegisters(int reg_from, int reg_to);
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virtual void ReadCurrentPositionFromRegister(int reg);
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virtual void WriteStackPointerToRegister(int reg);
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virtual void ReadStackPointerFromRegister(int reg);
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2008-12-19 12:02:34 +00:00
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virtual void LoadCurrentCharacter(int cp_offset,
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Label* on_end_of_input,
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bool check_bounds = true,
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int characters = 1);
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2011-01-12 11:56:41 +00:00
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virtual void CheckCharacter(unsigned c, Label* on_equal);
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virtual void CheckCharacterAfterAnd(unsigned c,
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unsigned mask,
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Label* on_equal);
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virtual void CheckCharacterGT(uc16 limit, Label* on_greater);
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virtual void CheckCharacterLT(uc16 limit, Label* on_less);
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virtual void CheckGreedyLoop(Label* on_tos_equals_current_position);
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virtual void CheckAtStart(Label* on_at_start);
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2008-11-28 11:48:22 +00:00
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virtual void CheckNotAtStart(Label* on_not_at_start);
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2011-01-12 11:56:41 +00:00
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virtual void CheckNotCharacter(unsigned c, Label* on_not_equal);
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virtual void CheckNotCharacterAfterAnd(unsigned c,
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unsigned mask,
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Label* on_not_equal);
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virtual void CheckNotCharacterAfterMinusAnd(uc16 c,
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uc16 minus,
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uc16 mask,
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Label* on_not_equal);
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2012-03-30 07:43:48 +00:00
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virtual void CheckCharacterInRange(uc16 from,
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uc16 to,
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Label* on_in_range);
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virtual void CheckCharacterNotInRange(uc16 from,
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uc16 to,
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Label* on_not_in_range);
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virtual void CheckBitInTable(Handle<ByteArray> table, Label* on_bit_set);
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virtual void CheckNotBackReference(int start_reg, Label* on_no_match);
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2008-11-27 07:27:08 +00:00
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virtual void CheckNotBackReferenceIgnoreCase(int start_reg,
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Label* on_no_match);
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virtual void IfRegisterLT(int register_index, int comparand, Label* if_lt);
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virtual void IfRegisterGE(int register_index, int comparand, Label* if_ge);
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2009-01-08 12:40:47 +00:00
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virtual void IfRegisterEqPos(int register_index, Label* if_eq);
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2008-11-25 11:07:48 +00:00
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virtual IrregexpImplementation Implementation();
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2011-05-11 06:39:27 +00:00
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virtual Handle<HeapObject> GetCode(Handle<String> source);
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2011-09-08 19:57:14 +00:00
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2008-11-25 11:07:48 +00:00
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private:
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void Expand();
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// Code and bitmap emission.
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2009-08-14 11:24:32 +00:00
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inline void EmitOrLink(Label* label);
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2008-11-28 10:37:06 +00:00
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inline void Emit32(uint32_t x);
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inline void Emit16(uint32_t x);
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2012-03-30 07:43:48 +00:00
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inline void Emit8(uint32_t x);
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2009-01-20 18:50:01 +00:00
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inline void Emit(uint32_t bc, uint32_t arg);
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// Bytecode buffer.
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int length();
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void Copy(Address a);
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// The buffer into which code and relocation info are generated.
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Vector<byte> buffer_;
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// The program counter.
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int pc_;
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// True if the assembler owns the buffer, false if buffer is external.
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bool own_buffer_;
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Label backtrack_;
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2009-02-19 10:03:27 +00:00
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int advance_current_start_;
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int advance_current_offset_;
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int advance_current_end_;
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2013-06-07 08:38:05 +00:00
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Isolate* isolate_;
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2009-02-19 10:03:27 +00:00
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static const int kInvalidPC = -1;
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2008-11-28 10:37:06 +00:00
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DISALLOW_IMPLICIT_CONSTRUCTORS(RegExpMacroAssemblerIrregexp);
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2008-11-25 11:07:48 +00:00
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};
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2010-04-19 19:30:11 +00:00
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#endif // V8_INTERPRETED_REGEXP
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2009-08-31 12:40:37 +00:00
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2008-11-25 11:07:48 +00:00
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} } // namespace v8::internal
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#endif // V8_REGEXP_MACRO_ASSEMBLER_IRREGEXP_H_
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