Class DexInstructionIterator

Bcore/src/main/cpp/dex/dex_instruction_iterator.h:121–156

A helper class for a code_item's instructions using range based for loop syntax.

// A helper class for a code_item's instructions using range based for loop syntax.
class DexInstructionIterator : public DexInstructionIteratorBase {
 public:
  using DexInstructionIteratorBase::DexInstructionIteratorBase;

  explicit DexInstructionIterator(const uint16_t* inst, uint32_t dex_pc)
      : DexInstructionIteratorBase(Instruction::At(inst), dex_pc) {}

  explicit DexInstructionIterator(const DexInstructionPcPair& pair)
      : DexInstructionIterator(pair.Instructions(), pair.DexPc()) {}

  // Value after modification.
  DexInstructionIterator& operator++() {
    data_.dex_pc_ += Inst().SizeInCodeUnits();
    return *this;
  }

  // Value before modification.
  DexInstructionIterator operator++(int) {
    DexInstructionIterator temp = *this;
    ++*this;
    return temp;
  }

  const value_type& operator*() const {
    return data_;
  }

  const Instruction* operator->() const {
    return &data_.Inst();
  }

  // Return the dex pc for the iterator.
  ALWAYS_INLINE uint32_t DexPc() const {
    return data_.DexPc();
  }
};

// A safe version of DexInstructionIterator that is guaranteed to not go past the end of the code
// item.