32 lines
669 B
Go
32 lines
669 B
Go
package builtins
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import (
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"monkey/internal/object"
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"monkey/internal/typing"
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"sort"
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)
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// Max ...
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func Max(args ...object.Object) object.Object {
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if err := typing.Check(
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"max", args,
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typing.ExactArgs(1),
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typing.WithTypes(object.ArrayType),
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); err != nil {
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return newError(err.Error())
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}
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a := args[0].(*object.Array)
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// TODO: Make this more generic
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xs := []int{} //make([]int, len(a.Elements))
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for n, e := range a.Elements {
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if i, ok := e.(*object.Integer); ok {
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xs = append(xs, int(i.Value))
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} else {
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return newError("item #%d not an `int` got=%d", n, e.Type())
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}
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}
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sort.Ints(xs)
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return &object.Integer{Value: int64(xs[len(xs)-1])}
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}
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