Method scanClassSetOperand

internal/scanner/regexp.go:748–777

ClassSetOperand ::= | '[' ClassSetExpression ']' | '\' CharacterClassEscape | '\q{' ClassStringDisjunctionContents '}' | ClassSetCharacter

()

//	| '\q{' ClassStringDisjunctionContents '}'
//	| ClassSetCharacter
func (p *regExpParser) scanClassSetOperand() string {
	p.mayContainStrings = false
	switch p.char() {
	case '[':
		p.incPos(1)
		p.scanClassSetExpression()
		p.scanExpectedChar(']')
		return ""
	case '\\':
		p.incPos(1)
		if p.scanCharacterClassEscape() {
			return ""
		} else if p.char() == 'q' {
			p.incPos(1)
			if p.char() == '{' {
				p.incPos(1)
				p.scanClassStringDisjunctionContents()
				p.scanExpectedChar('}')
				return ""
			} else {
				p.error(diagnostics.X_q_must_be_followed_by_string_alternatives_enclosed_in_braces, p.pos()-2, 2)
				return "q"
			}
		}
		p.incPos(-1)
		fallthrough
	default:
		return p.scanClassSetCharacter()
	}
}

// ClassStringDisjunctionContents ::= ClassSetCharacter* ('|' ClassSetCharacter*)*
func (p *regExpParser) scanClassStringDisjunctionContents() {