36 lines
900 B
Go
36 lines
900 B
Go
package gomap
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// The Transformer is a type alias for
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// a mapping function.
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type Transformer func(v interface{}) interface{}
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// A MappableList is able to apply
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// a Transformer to it's elements.
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type MappableList struct {
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// The embedded list.
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*List
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}
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// The Map function is called on a MappableList to apply
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// the requested Transformer.
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func (l *MappableList) Map(transformer Transformer) *List {
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// Convert into the parent object.
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return Map(l.List, transformer)
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}
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// The Map function handles mapping for a raw List.
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func Map(list *List, transformer Transformer) *List {
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// Get the iterator.
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itr := list.Iterator()
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// Utilise the iterator recursively, to map
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// the entire list.
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if next, value := itr.Next(); next {
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// Transform the item.
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list.Items()[itr.current] = transformer(value)
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// Remap everything.
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return Map(list, transformer)
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}
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// Return the list.
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return list
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}
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