}

// TableExpression represents the FROM clause
type TableExpression struct {
	Table *JSONPath `parser:"@@"`
	As    string    `parser:"( \"AS\"? @Ident )?"`
}

// JSONPathElement represents a keypath component
type JSONPathElement struct {
	Key            *ObjectKey `parser:"  @@"`               // ['name'] and .name forms
	Index          *int       `parser:"| \"[\" @Int \"]\""` // [3] form

		cause:      err,
	}
}

func errParseInvalidPathComponent(err error) *s3Error {
	return &s3Error{
		code:       "ParseInvalidPathComponent",
		message:    "The SQL expression contains an invalid path component.",
		statusCode: 400,
		cause:      err,
	}
}

func errParseMissingIdentAfterAt(err error) *s3Error {
	return &s3Error{
		code:       "ParseMissingIdentAfterAt",