github.com/goplus/igop@v0.25.0/xcall.go (about) 1 /* 2 * Copyright (c) 2022 The GoPlus Authors (goplus.org). All rights reserved. 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package igop 18 19 import ( 20 "errors" 21 "reflect" 22 23 "github.com/goplus/reflectx" 24 ) 25 26 func fieldAddrX(v interface{}, index int) (interface{}, error) { 27 x := reflect.ValueOf(v).Elem() 28 if !x.IsValid() { 29 return nil, errors.New("invalid memory address or nil pointer dereference") 30 } 31 return reflectx.FieldX(x, index).Addr().Interface(), nil 32 } 33 34 func fieldX(v interface{}, index int) (interface{}, error) { 35 x := reflect.ValueOf(v) 36 for x.Kind() == reflect.Ptr { 37 x = x.Elem() 38 } 39 if !x.IsValid() { 40 return nil, errors.New("invalid memory address or nil pointer dereference") 41 } 42 return reflectx.FieldX(x, index).Interface(), nil 43 } 44 45 func allMethodX(typ reflect.Type) []reflect.Method { 46 n := reflectx.NumMethodX(typ) 47 if n == 0 { 48 return nil 49 } 50 ms := make([]reflect.Method, n) 51 for i := 0; i < n; i++ { 52 ms[i] = reflectx.MethodX(typ, i) 53 } 54 return ms 55 }