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ddafaca850
* 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
71 lines
2.2 KiB
Go
71 lines
2.2 KiB
Go
// Copyright 2017 FoxyUtils ehf. All rights reserved.
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//
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// Use of this source code is governed by the terms of the Affero GNU General
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// Public License version 3.0 as published by the Free Software Foundation and
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// appearing in the file LICENSE included in the packaging of this file. A
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// commercial license can be purchased on https://unidoc.io.
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package formula
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import "github.com/unidoc/unioffice/spreadsheet/update"
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import (
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"fmt"
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"strconv"
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"strings"
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)
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// HorizontalRange is a range expression that when evaluated returns a list of Results from references like 1:4 (all cells from rows 1 to 4).
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type HorizontalRange struct {
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rowFrom, rowTo int
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}
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// NewHorizontalRange constructs a new full rows range.
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func NewHorizontalRange(v string) Expression {
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sl := strings.Split(v, ":")
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if len(sl) != 2 {
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return nil
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}
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from, _ := strconv.Atoi(sl[0])
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to, _ := strconv.Atoi(sl[1])
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return HorizontalRange{from, to}
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}
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// Eval evaluates a horizontal range returning a list of results or an error.
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func (r HorizontalRange) Eval(ctx Context, ev Evaluator) Result {
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key := r.horizontalRangeReference()
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if cached, found := ev.GetFromCache(key); found {
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return cached
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}
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from, to := cellRefsFromHorizontalRange(ctx, r.rowFrom, r.rowTo)
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res := resultFromCellRange(ctx, ev, from, to)
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ev.SetCache(key, res)
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return res
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}
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func (r HorizontalRange) horizontalRangeReference() string {
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return fmt.Sprintf("%d:%d", r.rowFrom, r.rowTo)
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}
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// Reference returns a string reference value to a horizontal range.
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func (r HorizontalRange) Reference(ctx Context, ev Evaluator) Reference {
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return Reference{Type: ReferenceTypeHorizontalRange, Value: r.horizontalRangeReference()}
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}
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func cellRefsFromHorizontalRange(ctx Context, rowFrom, rowTo int) (string, string) {
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from := "A" + strconv.Itoa(rowFrom)
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lastColumn := ctx.LastColumn(rowFrom, rowTo)
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to := lastColumn + strconv.Itoa(rowTo)
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return from, to
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}
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// String returns a string representation of a horizontal range.
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func (r HorizontalRange) String() string {
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return r.horizontalRangeReference()
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}
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// Update updates the horizontal range references after removing a row/column.
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func (r HorizontalRange) Update(q *update.UpdateQuery) Expression {
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return r
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}
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