30 lines
687 B
Go
30 lines
687 B
Go
package builtins
|
|
|
|
import (
|
|
"monkey/object"
|
|
"sort"
|
|
)
|
|
|
|
// Max ...
|
|
func Max(args ...object.Object) object.Object {
|
|
if len(args) != 1 {
|
|
return newError("wrong number of arguments. got=%d, want=1",
|
|
len(args))
|
|
}
|
|
|
|
if a, ok := args[0].(*object.Array); ok {
|
|
// TODO: Make this more generic
|
|
xs := make([]int, len(a.Elements))
|
|
for n, e := range a.Elements {
|
|
if i, ok := e.(*object.Integer); ok {
|
|
xs = append(xs, int(i.Value))
|
|
} else {
|
|
return newError("item #%d not an `int` got=%s", n, e.Type())
|
|
}
|
|
}
|
|
sort.Ints(xs)
|
|
return &object.Integer{Value: int64(xs[len(xs)-1])}
|
|
}
|
|
return newError("argument #1 to `max` expected to be `array` got=%T", args[0].Type())
|
|
}
|