Fixes to RegExp-IA32.

src/regexp-macro-assembler-tracer.h

+// Copyright 2008 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 REGEXP_MACRO_ASSEMBLER_TRACER_H_
+#define REGEXP_MACRO_ASSEMBLER_TRACER_H_
+
+namespace v8 { namespace internal {
+
+// Decorator on a RegExpMacroAssembler that write all calls.
+class RegExpMacroAssemblerTracer: public RegExpMacroAssembler {
+ public:
+  explicit RegExpMacroAssemblerTracer(RegExpMacroAssembler* assembler);
+  virtual ~RegExpMacroAssemblerTracer();
+
+  virtual void AdvanceCurrentPosition(int by);  // Signed cp change.
+  virtual void AdvanceRegister(int reg, int by);  // r[reg] += by.
+  virtual void Backtrack();
+  virtual void Bind(Label* label);
+  // Check the current character against a bitmap.  The range of the current
+  // character must be from start to start + length_of_bitmap_in_bits.

[Erik Corry, 2008/11/27 13:04:36]

I think the indivdual method comments should be removed here.  They are just
copies of those from the abstract base class and they are bound to become out of
date.

+  virtual void CheckBitmap(
+      uc16 start,           // The bitmap is indexed from this character.
+      Label* bitmap,        // Where the bitmap is emitted.
+      Label* on_zero);  // Where to go if the bit is 0.  Fall through on 1.
+  // 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(uc16 c, Label* on_equal);
+  virtual void CheckCharacterGT(uc16 limit, Label* on_greater);
+  virtual void CheckCharacterLT(uc16 limit, Label* on_less);
+  // Check the current character for a match with a literal string.  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 abnd go to that.
+  virtual void CheckCharacters(
+      Vector<const uc16> str,
+      int cp_offset,
+      Label* on_failure);
+  // Check the current input position against a register.  If the register is
+  // equal to the current position then go to the label.  If the label is NULL
+  // then backtrack instead.
+  virtual void CheckCurrentPosition(
+      int register_index,
+      Label* on_equal);
+  virtual void CheckNotBackReference(int start_reg, Label* on_no_match);
+  virtual void CheckNotBackReferenceIgnoreCase(int start_reg,
+                                               Label* on_no_match);
+  // 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(uc16 c, Label* on_not_equal);
+  // Bitwise or the current character with the given constant and then
+  // check for a match with c.
+  virtual void CheckNotCharacterAfterOr(uc16 c,
+                                        uc16 or_with,
+                                        Label* on_not_equal);
+  // Subtract a constant from the current character, then or with the given
+  // constant and then check for a match with c.
+  virtual void CheckNotCharacterAfterMinusOr(uc16 c,
+                                             uc16 minus_then_or_with,
+                                             Label* on_not_equal);
+  // Dispatch after looking the current character up in a byte map.  The
+  // destinations vector has up to 256 labels.
+  virtual void DispatchByteMap(
+      uc16 start,
+      Label* byte_map,
+      const Vector<Label*>& destinations);
+  virtual void DispatchHalfNibbleMap(
+      uc16 start,
+      Label* half_nibble_map,
+      const Vector<Label*>& destinations);
+  // Dispatch after looking the high byte of the current character up in a byte
+  // map.  The destinations vector has up to 256 labels.
+  virtual void DispatchHighByteMap(
+      byte start,
+      Label* byte_map,
+      const Vector<Label*>& destinations);
+  virtual void EmitOrLink(Label* label);
+  virtual void Fail();
+  virtual Handle<Object> GetCode();
+  virtual void GoTo(Label* label);
+  // 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);
+  // 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);
+  virtual IrregexpImplementation Implementation();
+  virtual void LoadCurrentCharacter(int cp_offset, Label* on_end_of_input);
+  virtual void PopCurrentPosition();
+  virtual void PopRegister(int register_index);
+  virtual void PushBacktrack(Label* label);
+  virtual void PushCurrentPosition();
+  virtual void PushRegister(int register_index);
+  virtual void ReadCurrentPositionFromRegister(int reg);
+  virtual void ReadStackPointerFromRegister(int reg);
+  virtual void SetRegister(int register_index, int to);
+  virtual void Succeed();
+  virtual void WriteCurrentPositionToRegister(int reg);
+  virtual void WriteStackPointerToRegister(int reg);
+ private:
+  RegExpMacroAssembler* assembler_;
+};
+
+} }  // namespace v8::internal
+
+#endif // REGEXP_MACRO_ASSEMBLER_TRACER_H_