Vyacheslav Zgordan ddafaca850
Spreadsheet: Remove columns feature (Issue #367) (#371)
* Issue #376 fix - RemoveColumn
* Removing of columns is forbidden when there are formula arrays in the area of removing, except 1-column wide arrays
* Modifying named ranges, column ranges when deleting a column
* Updating formulas when deleting a column
* UpdateAction
2020-02-11 19:47:08 +00:00

41 lines
1.1 KiB
Go

// Copyright 2017 FoxyUtils ehf. All rights reserved.
//
// Use of this source code is governed by the terms of the Affero GNU General
// Public License version 3.0 as published by the Free Software Foundation and
// appearing in the file LICENSE included in the packaging of this file. A
// commercial license can be purchased on https://unidoc.io.
package formula
import "github.com/unidoc/unioffice/spreadsheet/update"
// Error is an error expression.
type Error struct {
s string
}
// NewError constructs a new error expression from a string.
func NewError(v string) Expression {
return Error{v}
}
// Eval evaluates and returns the result of an error expression.
func (e Error) Eval(ctx Context, ev Evaluator) Result {
return MakeErrorResult(e.s)
}
// Reference returns an invalid reference for Error.
func (e Error) Reference(ctx Context, ev Evaluator) Reference {
return ReferenceInvalid
}
// String returns an empty string for Error.
func (e Error) String() string {
return ""
}
// Update returns the same object as updating sheet references does not affect Error.
func (e Error) Update(q *update.UpdateQuery) Expression {
return e
}