Todd 99ed4875e1 spreadsheet: support evaluation of shared formulas
This seems to be very uncommon.
2017-10-01 19:29:13 -05:00

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// Copyright 2017 Baliance. 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 by contacting sales@baliance.com.
package formula
// Context is a formula execution context. Formula evaluation uses the context
// to retreive information from sheets.
type Context interface {
// Cell returns the result of evaluating a cell.
Cell(ref string, ev Evaluator) Result
// Sheet returns an evaluation context for a given sheet name. This is used
// when evaluating cells that pull data from other sheets (e.g. ='Sheet 2'!A1)
Sheet(name string) Context
// NamedRange returns a named range.
NamedRange(name string) Reference
// SetOffset is used so that the Context can evaluate cell references
// differently when they are not absolute (e.g. not like '$A$5'). See the
// shared formula support in Cell for usage.
SetOffset(col, row uint32)
}