Method scanTemplateAndSetTokenValue

internal/scanner/scanner.go:1638–1688

(shouldEmitInvalidEscapeError bool)

}

func (s *Scanner) scanTemplateAndSetTokenValue(shouldEmitInvalidEscapeError bool) ast.Kind {
	startedWithBacktick := s.char() == '`'
	s.pos++
	start := s.pos
	parts := make([]string, 0, 4)
	var token ast.Kind
	for {
		s.scanASCIIWhile(func(b byte) bool {
			return b != '`' && b != '$' && b != '\\' && b != '\r'
		})
		ch := s.char()
		if ch < 0 || ch == '`' {
			parts = append(parts, s.text[start:s.pos])
			if ch == '`' {
				s.pos++
			} else {
				s.tokenFlags |= ast.TokenFlagsUnterminated
				s.error(diagnostics.Unterminated_template_literal)
			}
			token = core.IfElse(startedWithBacktick, ast.KindNoSubstitutionTemplateLiteral, ast.KindTemplateTail)
			break
		}
		if ch == '$' && s.charAt(1) == '{' {
			parts = append(parts, s.text[start:s.pos])
			s.pos += 2
			token = core.IfElse(startedWithBacktick, ast.KindTemplateHead, ast.KindTemplateMiddle)
			break
		}
		if ch == '\\' {
			parts = append(parts, s.text[start:s.pos])
			parts = append(parts, s.scanEscapeSequence(EscapeSequenceScanningFlagsString|core.IfElse(shouldEmitInvalidEscapeError, EscapeSequenceScanningFlagsReportErrors, 0)))
			start = s.pos
			continue
		}
		// Speculated ECMAScript 6 Spec 11.8.6.1:
		// <CR><LF> and <CR> LineTerminatorSequences are normalized to <LF> for Template Values
		if ch == '\r' {
			parts = append(parts, s.text[start:s.pos])
			s.pos++
			if s.char() == '\n' {
				s.pos++
			}
			parts = append(parts, "\n")
			start = s.pos
			continue
		}
		s.pos++
	}
	s.tokenValue = strings.Join(parts, "")
	return token
}

func (s *Scanner) scanEscapeSequence(flags EscapeSequenceScanningFlags) string {
	start := s.pos