Method scanPatternModifiers

internal/scanner/regexp.go:354–374

(currFlags regularExpressionFlags)

}

func (p *regExpParser) scanPatternModifiers(currFlags regularExpressionFlags) regularExpressionFlags {
	for p.pos() < p.end {
		ch, size := utf8.DecodeRuneInString(p.text()[p.pos():])
		if ch == utf8.RuneError || !IsIdentifierPart(ch) {
			break
		}
		flag, ok := charCodeToRegExpFlag[ch]
		if !ok {
			p.error(diagnostics.Unknown_regular_expression_flag, p.pos(), size)
		} else if currFlags&flag != 0 {
			p.error(diagnostics.Duplicate_regular_expression_flag, p.pos(), size)
		} else if flag&regularExpressionFlagsModifiers == 0 {
			p.error(diagnostics.This_regular_expression_flag_cannot_be_toggled_within_a_subpattern, p.pos(), size)
		} else {
			currFlags |= flag
			p.scanner.checkRegularExpressionFlagAvailability(flag, p.pos(), size)
		}
		p.incPos(size)
	}
	return currFlags
}

// AtomEscape ::=
//