43 lines
936 B
Go
43 lines
936 B
Go
// +build go1.17
|
|
|
|
/*
|
|
* Copyright 2021 ByteDance Inc.
|
|
*
|
|
* Licensed under the Apache License, Version 2.0 (the "License");
|
|
* you may not use this file except in compliance with the License.
|
|
* You may obtain a copy of the License at
|
|
*
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
|
*
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
* See the License for the specific language governing permissions and
|
|
* limitations under the License.
|
|
*/
|
|
|
|
package rt
|
|
|
|
import (
|
|
_ `unsafe`
|
|
)
|
|
|
|
func AssertI2I(t *GoType, i GoIface) (r GoIface) {
|
|
inter := IfaceType(t)
|
|
tab := i.Itab
|
|
if tab == nil {
|
|
return
|
|
}
|
|
if (*GoInterfaceType)(tab.it) != inter {
|
|
tab = GetItab(inter, tab.Vt, true)
|
|
if tab == nil {
|
|
return
|
|
}
|
|
}
|
|
r.Itab = tab
|
|
r.Value = i.Value
|
|
return
|
|
}
|
|
|
|
|