mirror of
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
49 lines
1.4 KiB
Go
49 lines
1.4 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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// FunctionCall is a function call expression.
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type FunctionCall struct {
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name string
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args []Expression
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}
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// NewFunction constructs a new function call expression.
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func NewFunction(name string, args []Expression) Expression {
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return FunctionCall{name, args}
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}
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// Eval evaluates and returns the result of a function call.
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func (f FunctionCall) Eval(ctx Context, ev Evaluator) Result {
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fn := LookupFunction(f.name)
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if fn != nil {
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args := make([]Result, len(f.args))
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for i, a := range f.args {
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args[i] = a.Eval(ctx, ev)
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args[i].Ref = a.Reference(ctx, ev)
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}
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return fn(args)
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}
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fnx := LookupFunctionComplex(f.name)
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if fnx != nil {
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args := make([]Result, len(f.args))
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for i, a := range f.args {
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args[i] = a.Eval(ctx, ev)
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args[i].Ref = a.Reference(ctx, ev)
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}
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return fnx(ctx, ev, args)
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}
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return MakeErrorResult("unknown function " + f.name)
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}
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// Reference returns an invalid reference for FunctionCall.
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func (f FunctionCall) Reference(ctx Context, ev Evaluator) Reference {
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return ReferenceInvalid
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}
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