本文整理汇总了C++中MatchResult::empty方法的典型用法代码示例。如果您正苦于以下问题：C++ MatchResult::empty方法的具体用法？C++ MatchResult::empty怎么用？C++ MatchResult::empty使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类MatchResult的用法示例。
在下文中一共展示了MatchResult::empty方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: collectMatches
JSValue collectMatches(VM& vm, ExecState* exec, JSString* string, const String& s, RegExpConstructor* constructor, RegExp* regExp, const FixEndFunc& fixEnd)
{
auto scope = DECLARE_THROW_SCOPE(vm);
MatchResult result = constructor->performMatch(vm, regExp, string, s, 0);
if (!result)
return jsNull();
static unsigned maxSizeForDirectPath = 100000;
JSArray* array = constructEmptyArray(exec, nullptr);
if (UNLIKELY(vm.exception()))
return jsUndefined();
auto iterate = [&] () {
size_t end = result.end;
size_t length = end - result.start;
array->push(exec, JSRopeString::createSubstringOfResolved(vm, string, result.start, length));
if (!length)
end = fixEnd(end);
result = constructor->performMatch(vm, regExp, string, s, end);
};
do {
if (array->length() >= maxSizeForDirectPath) {
// First do a throw-away match to see how many matches we'll get.
unsigned matchCount = 0;
MatchResult savedResult = result;
do {
if (array->length() + matchCount >= MAX_STORAGE_VECTOR_LENGTH) {
throwOutOfMemoryError(exec, scope);
return jsUndefined();
}
size_t end = result.end;
matchCount++;
if (result.empty())
end = fixEnd(end);
// Using RegExpConstructor::performMatch() instead of calling RegExp::match()
// directly is a surprising but profitable choice: it means that when we do OOM, we
// will leave the cached result in the state it ought to have had just before the
// OOM! On the other hand, if this loop concludes that the result is small enough,
// then the iterate() loop below will overwrite the cached result anyway.
result = constructor->performMatch(vm, regExp, string, s, end);
} while (result);
// OK, we have a sensible number of matches. Now we can create them for reals.
result = savedResult;
do
iterate();
while (result);
return array;
}
iterate();
} while (result);
return array;
}