27 lines
587 B
Go
27 lines
587 B
Go
package object
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// Push ...
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func Push(args ...Object) Object {
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if len(args) != 2 {
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return newError("wrong number of arguments. got=%d, want=2",
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len(args))
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}
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if args[0].Type() != ARRAY_OBJ {
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return newError("argument to `push` must be ARRAY, got %s",
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args[0].Type())
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}
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arr := args[0].(*Array)
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length := len(arr.Elements)
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newElements := make([]Object, length+1)
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copy(newElements, arr.Elements)
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if immutable, ok := args[1].(Immutable); ok {
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newElements[length] = immutable.Clone()
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} else {
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newElements[length] = args[1]
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}
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return &Array{Elements: newElements}
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}
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