v8::internal::StringComparator Class Reference

Collaboration diagram for v8::internal::StringComparator:

Classes
class	State

Public Member Functions
	StringComparator (ConsStringIteratorOp *op_1, ConsStringIteratorOp *op_2)
bool	Equals (String *string_1, String *string_2)

Static Public Member Functions
template<typename Chars1 , typename Chars2 >
static bool	Equals (State *state_1, State *state_2, int to_check)

Private Member Functions
	DISALLOW_IMPLICIT_CONSTRUCTORS (StringComparator)

Private Attributes
State	state_1_
State	state_2_

Detailed Description

Definition at line 8559 of file objects.cc.

Constructor & Destructor Documentation

StringComparator()

v8::internal::StringComparator::StringComparator ( ConsStringIteratorOp *  op_1, ConsStringIteratorOp *  op_2  )

inline

Definition at line 8620 of file objects.cc.

    : state_1_(op_1),
      state_2_(op_2) {
  }

Member Function Documentation

DISALLOW_IMPLICIT_CONSTRUCTORS()

v8::internal::StringComparator::DISALLOW_IMPLICIT_CONSTRUCTORS ( StringComparator  )

private

Equals() [1/2]

template<typename Chars1 , typename Chars2 >

static bool v8::internal::StringComparator::Equals ( State *  state_1, State *  state_2, int  to_check  )

inlinestatic

Definition at line 8627 of file objects.cc.

                                                                          {
    const Chars1* a = reinterpret_cast<const Chars1*>(state_1->buffer8_);
    const Chars2* b = reinterpret_cast<const Chars2*>(state_2->buffer8_);
    return RawStringComparator<Chars1, Chars2>::compare(a, b, to_check);
  }

References v8::internal::StringComparator::State::buffer8_, and v8::internal::RawStringComparator< Chars1, Chars2 >::compare().

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Equals() [2/2]

bool v8::internal::StringComparator::Equals ( String *  string_1, String *  string_2  )

inline

Definition at line 8633 of file objects.cc.

                                                  {
    int length = string_1->length();
    state_1_.Init(string_1);
    state_2_.Init(string_2);
    while (true) {
      int to_check = Min(state_1_.length_, state_2_.length_);
      DCHECK(to_check > 0 && to_check <= length);
      bool is_equal;
      if (state_1_.is_one_byte_) {
        if (state_2_.is_one_byte_) {
          is_equal = Equals<uint8_t, uint8_t>(&state_1_, &state_2_, to_check);
        } else {
          is_equal = Equals<uint8_t, uint16_t>(&state_1_, &state_2_, to_check);
        }
      } else {
        if (state_2_.is_one_byte_) {
          is_equal = Equals<uint16_t, uint8_t>(&state_1_, &state_2_, to_check);
        } else {
          is_equal = Equals<uint16_t, uint16_t>(&state_1_, &state_2_, to_check);
        }
      }
      // Looping done.
      if (!is_equal) return false;
      length -= to_check;
      // Exit condition. Strings are equal.
      if (length == 0) return true;
      state_1_.Advance(to_check);
      state_2_.Advance(to_check);
    }
  }

References v8::internal::StringComparator::State::Advance(), DCHECK, v8::internal::StringComparator::State::Init(), v8::internal::StringComparator::State::is_one_byte_, v8::internal::String::length(), v8::internal::StringComparator::State::length_, v8::internal::Min(), state_1_, and state_2_.

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Member Data Documentation

state_1_

State v8::internal::StringComparator::state_1_

private

Definition at line 8665 of file objects.cc.

Referenced by Equals().

state_2_

State v8::internal::StringComparator::state_2_

private

Definition at line 8666 of file objects.cc.

Referenced by Equals().

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The documentation for this class was generated from the following file:

• /mnt/V8SourceCode/src/objects.cc