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46 lines
971 B
Go
46 lines
971 B
Go
package hook
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// Resolver defines a common interface for a Hook event (see [Event]).
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type Resolver interface {
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// Next triggers the next handler in the hook's chain (if any).
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Next() error
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// note: kept only for the generic interface; may get removed in the future
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nextFunc() func() error
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setNextFunc(f func() error)
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}
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var _ Resolver = (*Event)(nil)
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// Event implements [Resolver] and it is intended to be used as a base
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// Hook event that you can embed in your custom typed event structs.
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//
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// Example:
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//
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// type CustomEvent struct {
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// hook.Event
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//
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// SomeField int
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// }
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type Event struct {
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next func() error
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}
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// Next calls the next hook handler.
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func (e *Event) Next() error {
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if e.next != nil {
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return e.next()
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}
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return nil
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}
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// nextFunc returns the function that Next calls.
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func (e *Event) nextFunc() func() error {
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return e.next
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}
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// setNextFunc sets the function that Next calls.
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func (e *Event) setNextFunc(f func() error) {
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e.next = f
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}
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