45 lines
611 B
Go
45 lines
611 B
Go
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package vm
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type (
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enumerator interface {
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Next() bool
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Value() StackItem
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}
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arrayWrapper struct {
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index int
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value []StackItem
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}
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concatEnum struct {
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current enumerator
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second enumerator
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}
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)
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func (a *arrayWrapper) Next() bool {
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if next := a.index + 1; next < len(a.value) {
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a.index = next
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return true
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}
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return false
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}
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func (a *arrayWrapper) Value() StackItem {
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return a.value[a.index]
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}
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func (c *concatEnum) Next() bool {
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if c.current.Next() {
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return true
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}
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c.current = c.second
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return c.current.Next()
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}
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func (c *concatEnum) Value() StackItem {
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return c.current.Value()
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}
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