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https://github.com/unidoc/unioffice.git
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a5ef37c0bc
* evaluation errors fixed * allow underscores in sheet names * allow wildcard in *LOOKUP functions * horizontal and vertical ranges * horizontal and vertical ranges for sheet references * remove redundant recalculate * caching * fixed named ranges, made Evaluator more generic * Memory usage shown in flatten example * temporary file deleted * ParseCellReference duplicate removed * ISREF is fixed
66 lines
2.2 KiB
Go
66 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 "time"
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// Context is a formula execution context. Formula evaluation uses the context
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// to retreive information from sheets.
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type Context interface {
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// Cell returns the result of evaluating a cell.
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Cell(ref string, ev Evaluator) Result
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// Sheet returns an evaluation context for a given sheet name. This is used
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// when evaluating cells that pull data from other sheets (e.g. ='Sheet 2'!A1).
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Sheet(name string) Context
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// GetEpoch returns the time epoch of the context's Workbook.
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GetEpoch() time.Time
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// GetFilename returns the full filename of the context's Workbook.
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GetFilename() string
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// GetWidth returns a worksheet's column width.
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GetWidth(colIdx int) float64
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// GetFormat returns a cell's format.
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GetFormat(cellRef string) string
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// GetLabelPrefix returns cell's label prefix dependent on cell horizontal alignment.
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GetLabelPrefix(cellRef string) string
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// GetFormat returns if cell is protected.
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GetLocked(cellRef string) bool
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// HasFormula returns if cell contains formula.
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HasFormula(cellRef string) bool
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// IsBool returns if cell contains boolean value.
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IsBool(cellRef string) bool
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// IsDBCS returns if workbook default language is among DBCS.
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IsDBCS() bool
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// LastColumn returns the name of last column which contains data in range of context sheet's given rows.
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LastColumn(rowFrom, rowTo int) string
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// LastRow returns the name of last row which contains data in range of context sheet's given columns.
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LastRow(colFrom string) int
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// SetLocked returns sets cell's protected attribute.
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SetLocked(cellRef string, locked bool)
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// NamedRange returns a named range.
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NamedRange(name string) Reference
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// SetOffset is used so that the Context can evaluate cell references
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// differently when they are not absolute (e.g. not like '$A$5'). See the
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// shared formula support in Cell for usage.
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SetOffset(col, row uint32)
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}
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