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      1 // Copyright 2010 the V8 project authors. All rights reserved.
      2 // Redistribution and use in source and binary forms, with or without
      3 // modification, are permitted provided that the following conditions are
      4 // met:
      5 //
      6 //     * Redistributions of source code must retain the above copyright
      7 //       notice, this list of conditions and the following disclaimer.
      8 //     * Redistributions in binary form must reproduce the above
      9 //       copyright notice, this list of conditions and the following
     10 //       disclaimer in the documentation and/or other materials provided
     11 //       with the distribution.
     12 //     * Neither the name of Google Inc. nor the names of its
     13 //       contributors may be used to endorse or promote products derived
     14 //       from this software without specific prior written permission.
     15 //
     16 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
     17 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
     18 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
     19 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
     20 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
     21 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
     22 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     23 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     24 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     25 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     26 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     27 
     28 #include "v8.h"
     29 
     30 #include "data-flow.h"
     31 #include "scopes.h"
     32 
     33 namespace v8 {
     34 namespace internal {
     35 
     36 #ifdef DEBUG
     37 void BitVector::Print() {
     38   bool first = true;
     39   PrintF("{");
     40   for (int i = 0; i < length(); i++) {
     41     if (Contains(i)) {
     42       if (!first) PrintF(",");
     43       first = false;
     44       PrintF("%d", i);
     45     }
     46   }
     47   PrintF("}");
     48 }
     49 #endif
     50 
     51 
     52 void BitVector::Iterator::Advance() {
     53   current_++;
     54   uint32_t val = current_value_;
     55   while (val == 0) {
     56     current_index_++;
     57     if (Done()) return;
     58     val = target_->data_[current_index_];
     59     current_ = current_index_ << 5;
     60   }
     61   val = SkipZeroBytes(val);
     62   val = SkipZeroBits(val);
     63   current_value_ = val >> 1;
     64 }
     65 
     66 } }  // namespace v8::internal
     67