dart::FrequencyCollator Class Reference

Inheritance diagram for dart::FrequencyCollator:

Public Member Functions
	FrequencyCollator ()
void	CountCharacter (intptr_t character)
intptr_t	Frequency (intptr_t in_character)
Public Member Functions inherited from dart::ValueObject
	ValueObject ()
	~ValueObject ()

Detailed Description

Definition at line 245 of file regexp.cc.

Constructor & Destructor Documentation

FrequencyCollator()

dart::FrequencyCollator::FrequencyCollator ( )

inline

Definition at line 247 of file regexp.cc.

                      : total_samples_(0) {
    for (intptr_t i = 0; i < RegExpMacroAssembler::kTableSize; i++) {
      frequencies_[i] = CharacterFrequency(i);
    }
  }

Member Function Documentation

CountCharacter()

void dart::FrequencyCollator::CountCharacter ( intptr_t  character )

inline

Definition at line 253 of file regexp.cc.

                                          {
    intptr_t index = (character & RegExpMacroAssembler::kTableMask);
    frequencies_[index].Increment();
    total_samples_++;
  }

Frequency()

intptr_t dart::FrequencyCollator::Frequency ( intptr_t  in_character )

inline

Definition at line 261 of file regexp.cc.

                                            {
    ASSERT((in_character & RegExpMacroAssembler::kTableMask) == in_character);
    if (total_samples_ < 1) return 1;  // Division by zero.
    intptr_t freq_in_per128 =
        (frequencies_[in_character].counter() * 128) / total_samples_;
    return freq_in_per128;
  }

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

• third_party/dart-lang/sdk/runtime/vm/regexp.cc