46 lines
982 B
Go
46 lines
982 B
Go
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// +build !tinygo
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package events
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import (
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"errors"
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"reflect"
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)
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type receiptHandler struct {
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receiverFunc reflect.Value
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funcType reflect.Type
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}
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func newReceiptHandler(receiver interface{}) (receiptHandler, error) {
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val := reflect.ValueOf(receiver)
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if val.Type().Kind() != reflect.Func {
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return receiptHandler{}, errors.New("not a function")
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}
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return receiptHandler{receiverFunc: val, funcType: val.Type()}, nil
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}
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func (rh *receiptHandler) invoke(values preparedArgs) {
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args := make([]reflect.Value, rh.funcType.NumIn())
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for i := range args {
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args[i] = reflect.Zero(rh.funcType.In(i))
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if i < len(values) {
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if rh.funcType.In(i).AssignableTo(values[i].Type()) {
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args[i] = values[i]
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}
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}
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}
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rh.receiverFunc.Call(args)
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}
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type preparedArgs []reflect.Value
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func prepareArgs(argIfacess []interface{}) preparedArgs {
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values := make([]reflect.Value, len(argIfacess))
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for i, a := range argIfacess {
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values[i] = reflect.ValueOf(a)
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}
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return values
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}
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