44 lines
846 B
Go
44 lines
846 B
Go
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/*
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* Copyright (c) 2018 DeineAgentur UG https://www.deineagentur.com. All rights reserved.
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* Licensed under the MIT License. See LICENSE file in the project root for full license information.
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*/
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package plurals
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// Expression is a plurals expression. Eval evaluates the expression for
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// a given n value. Use plurals.Compile to generate Expression instances.
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type Expression interface {
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Eval(n uint32) int
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}
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type constValue struct {
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value int
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}
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func (c constValue) Eval(n uint32) int {
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return c.value
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}
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type test interface {
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test(n uint32) bool
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}
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type ternary struct {
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test test
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trueExpr Expression
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falseExpr Expression
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}
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func (t ternary) Eval(n uint32) int {
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if t.test.test(n) {
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if t.trueExpr == nil {
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return -1
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}
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return t.trueExpr.Eval(n)
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}
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if t.falseExpr == nil {
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return -1
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}
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return t.falseExpr.Eval(n)
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}
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