File: validrange.cc

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#include "charclass.ih"

    // got a pattern 'a-b', idx at '-'
bool CharClass::validRange(TagIter iter) const 
{
    return not
        (
            predefinedBefore(*iter) || predefinedAfter(*iter) ||
            rangeAfterRange(iter)  || inversedRange(*iter)
        );
}