/*
 * Copyright (C) 2013 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#ifndef ART_COMPILER_DEX_DATAFLOW_ITERATOR_INL_H_
#define ART_COMPILER_DEX_DATAFLOW_ITERATOR_INL_H_

#include "dataflow_iterator.h"

namespace art {

inline BasicBlock* DataflowIterator::NextBody(bool had_change) {
  changed_ |= had_change;
  BasicBlock* res = NULL;
  if (reverse_) {
    if (is_iterative_ && changed_ && (idx_ < 0)) {
      idx_ = start_idx_;
      changed_ = false;
    }
    if (idx_ >= 0) {
      int bb_id = block_id_list_->Get(idx_--);
      res = mir_graph_->GetBasicBlock(bb_id);
    }
  } else {
    if (is_iterative_ && changed_ && (idx_ >= end_idx_)) {
      idx_ = start_idx_;
      changed_ = false;
    }
    if (idx_ < end_idx_) {
      int bb_id = block_id_list_->Get(idx_++);
      res = mir_graph_->GetBasicBlock(bb_id);
    }
  }
  return res;
}

// AllNodes uses the existing GrowableArray iterator, so use different NextBody().
inline BasicBlock* AllNodesIterator::NextBody(bool had_change) {
  changed_ |= had_change;
  BasicBlock* res = NULL;
  bool keep_looking = true;
  while (keep_looking) {
    res = all_nodes_iterator_->Next();
    if (is_iterative_ && changed_ && (res == NULL)) {
      all_nodes_iterator_->Reset();
      changed_ = false;
    } else if ((res == NULL) || (!res->hidden)) {
      keep_looking = false;
    }
  }
  return res;
}

}  // namespace art

#endif  // ART_COMPILER_DEX_DATAFLOW_ITERATOR_INL_H_