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33 lines
798 B
Go
33 lines
798 B
Go
package datetime
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import (
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"context"
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"github.com/MontFerret/ferret/pkg/runtime/core"
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"github.com/MontFerret/ferret/pkg/runtime/values"
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"github.com/MontFerret/ferret/pkg/runtime/values/types"
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)
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// DateLeapYear returns true if date is in a leap year else false.
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// @params date (DateTime) - source DateTime.
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// @return (Boolean) - date is in a leap year.
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func DateLeapYear(_ context.Context, args ...core.Value) (core.Value, error) {
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err := core.ValidateArgs(args, 1, 1)
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if err != nil {
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return values.None, err
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}
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err = core.ValidateType(args[0], types.DateTime)
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if err != nil {
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return values.None, err
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}
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year := args[0].(values.DateTime).Year()
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return values.NewBoolean(isLeap(year)), nil
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}
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func isLeap(year int) bool {
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return year%4 == 0 && (year%100 != 0 || year%400 == 0)
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}
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