39 lines
795 B
Go
39 lines
795 B
Go
package object
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// Bool ...
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func Bool(args ...Object) Object {
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if len(args) != 1 {
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return newError("wrong number of arguments. got=%d, want=1", len(args))
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}
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switch arg := args[0].(type) {
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case *Null:
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return &Boolean{Value: false}
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case *Boolean:
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return arg
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case *Integer:
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if arg.Value == 0 {
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return &Boolean{Value: false}
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}
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return &Boolean{Value: true}
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case *String:
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if len(arg.Value) > 0 {
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return &Boolean{Value: true}
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}
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return &Boolean{Value: false}
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case *Array:
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if len(arg.Elements) > 0 {
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return &Boolean{Value: true}
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}
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return &Boolean{Value: false}
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case *Hash:
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if len(arg.Pairs) > 0 {
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return &Boolean{Value: true}
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}
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return &Boolean{Value: false}
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default:
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return newError("argument to `bool` not supported, got=%s", args[0].Type())
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}
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}
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