dart::RegExpExpansionLimiter Class Reference

Inheritance diagram for dart::RegExpExpansionLimiter:

Public Member Functions
	RegExpExpansionLimiter (RegExpCompiler *compiler, intptr_t factor)
	~RegExpExpansionLimiter ()
bool	ok_to_expand ()
Public Member Functions inherited from dart::ValueObject
	ValueObject ()
	~ValueObject ()

Static Public Attributes
static constexpr intptr_t	kMaxExpansionFactor = 6

Detailed Description

Definition at line 4223 of file regexp.cc.

Constructor & Destructor Documentation

RegExpExpansionLimiter()

dart::RegExpExpansionLimiter::RegExpExpansionLimiter ( RegExpCompiler *  compiler, intptr_t  factor  )

inline

Definition at line 4226 of file regexp.cc.

      : compiler_(compiler),
        saved_expansion_factor_(compiler->current_expansion_factor()),
        ok_to_expand_(saved_expansion_factor_ <= kMaxExpansionFactor) {
    ASSERT(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 {
        intptr_t new_factor = saved_expansion_factor_ * factor;
        ok_to_expand_ = (new_factor <= kMaxExpansionFactor);
        compiler->set_current_expansion_factor(new_factor);
      }
    }
  }

~RegExpExpansionLimiter()

dart::RegExpExpansionLimiter::~RegExpExpansionLimiter ( )

inline

Definition at line 4244 of file regexp.cc.

                            {
    compiler_->set_current_expansion_factor(saved_expansion_factor_);
  }

Member Function Documentation

ok_to_expand()

bool dart::RegExpExpansionLimiter::ok_to_expand ( )

inline

Definition at line 4248 of file regexp.cc.

{ return ok_to_expand_; }

Member Data Documentation

kMaxExpansionFactor

constexpr intptr_t dart::RegExpExpansionLimiter::kMaxExpansionFactor = 6

staticconstexpr

Definition at line 4225 of file regexp.cc.

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

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