Method handleEscapeSequence

pkg/sql/tokenizer/tokenizer.go:1136–1165

handleEscapeSequence handles escape sequences in string literals

(buf *bytes.Buffer)

// handleEscapeSequence handles escape sequences in string literals
func (t *Tokenizer) handleEscapeSequence(buf *bytes.Buffer) error {
	t.pos.Index++
	t.pos.Column++

	if t.pos.Index >= len(t.input) {
		return errors.IncompleteStatementError(t.getCurrentPosition(), string(t.input))
	}

	r, size := utf8.DecodeRune(t.input[t.pos.Index:])
	switch r {
	case '\\', '"', '\'', '`':
		buf.WriteRune(r)
	case 'n':
		buf.WriteRune('\n')
	case 'r':
		buf.WriteRune('\r')
	case 't':
		buf.WriteRune('\t')
	default:
		return errors.InvalidSyntaxError(
			fmt.Sprintf("invalid escape sequence '\\%c'", r),
			t.getCurrentPosition(),
			string(t.input),
		)
	}

	t.pos.Index += size
	t.pos.Column++
	return nil
}

// readNumber reads an integer/float
func (t *Tokenizer) readNumber(buf []byte) (models.Token, error) {