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