v8::internal::RegExpExpansionLimiter Class Reference

Collaboration diagram for v8::internal::RegExpExpansionLimiter:

Public Member Functions
	RegExpExpansionLimiter (RegExpCompiler *compiler, int factor)
	~RegExpExpansionLimiter ()
bool	ok_to_expand ()

Static Public Attributes
static const int	kMaxExpansionFactor = 6

Private Member Functions
	DISALLOW_IMPLICIT_CONSTRUCTORS (RegExpExpansionLimiter)

Private Attributes
RegExpCompiler *	compiler_
int	saved_expansion_factor_
bool	ok_to_expand_

Detailed Description

Definition at line 4871 of file jsregexp.cc.

Constructor & Destructor Documentation

RegExpExpansionLimiter()

v8::internal::RegExpExpansionLimiter::RegExpExpansionLimiter ( RegExpCompiler *  compiler, int  factor  )

inline

Definition at line 4874 of file jsregexp.cc.

      : compiler_(compiler),
        saved_expansion_factor_(compiler->current_expansion_factor()),
        ok_to_expand_(saved_expansion_factor_ <= kMaxExpansionFactor) {
    DCHECK(factor > 0);
    if (ok_to_expand_) {
      if (factor > kMaxExpansionFactor) {
        // Avoid integer overflow of the current expansion factor.
        ok_to_expand_ = false;
        compiler->set_current_expansion_factor(kMaxExpansionFactor + 1);
      } else {
        int new_factor = saved_expansion_factor_ * factor;
        ok_to_expand_ = (new_factor <= kMaxExpansionFactor);
        compiler->set_current_expansion_factor(new_factor);
      }
    }
  }

References DCHECK, kMaxExpansionFactor, ok_to_expand_, saved_expansion_factor_, and v8::internal::RegExpCompiler::set_current_expansion_factor().

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~RegExpExpansionLimiter()

v8::internal::RegExpExpansionLimiter::~RegExpExpansionLimiter ( )

inline

Definition at line 4892 of file jsregexp.cc.

                            {
    compiler_->set_current_expansion_factor(saved_expansion_factor_);
  }

References compiler_, saved_expansion_factor_, and v8::internal::RegExpCompiler::set_current_expansion_factor().

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Member Function Documentation

DISALLOW_IMPLICIT_CONSTRUCTORS()

v8::internal::RegExpExpansionLimiter::DISALLOW_IMPLICIT_CONSTRUCTORS ( RegExpExpansionLimiter  )

private

ok_to_expand()

bool v8::internal::RegExpExpansionLimiter::ok_to_expand ( )

inline

Definition at line 4896 of file jsregexp.cc.

{ return ok_to_expand_; }

References ok_to_expand_.

Member Data Documentation

compiler_

RegExpCompiler* v8::internal::RegExpExpansionLimiter::compiler_

private

Definition at line 4899 of file jsregexp.cc.

Referenced by ~RegExpExpansionLimiter().

kMaxExpansionFactor

const int v8::internal::RegExpExpansionLimiter::kMaxExpansionFactor = 6

static

Definition at line 4873 of file jsregexp.cc.

Referenced by RegExpExpansionLimiter().

ok_to_expand_

bool v8::internal::RegExpExpansionLimiter::ok_to_expand_

private

Definition at line 4901 of file jsregexp.cc.

Referenced by ok_to_expand(), and RegExpExpansionLimiter().

saved_expansion_factor_

int v8::internal::RegExpExpansionLimiter::saved_expansion_factor_

private

Definition at line 4900 of file jsregexp.cc.

Referenced by RegExpExpansionLimiter(), and ~RegExpExpansionLimiter().

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

• /mnt/V8SourceCode/src/jsregexp.cc