github.com/HaswinVidanage/gqlgen@v0.8.1-0.20220609041233-69528c1bf712/codegen/interface.gotpl (about)

     1  {{- range $interface := .Interfaces }}
     2  
     3  func (ec *executionContext) _{{$interface.Name}}(ctx context.Context, sel ast.SelectionSet, obj *{{$interface.Type | ref}}) graphql.Marshaler {
     4  	switch obj := (*obj).(type) {
     5  	case nil:
     6  		return graphql.Null
     7  	{{- range $implementor := $interface.Implementors }}
     8  		{{- if $implementor.ValueReceiver }}
     9  			case {{$implementor.Type | ref}}:
    10  				return ec._{{$implementor.Name}}(ctx, sel, &obj)
    11  		{{- end}}
    12  		case *{{$implementor.Type | ref}}:
    13  			return ec._{{$implementor.Name}}(ctx, sel, obj)
    14  	{{- end }}
    15  	default:
    16  		panic(fmt.Errorf("unexpected type %T", obj))
    17  	}
    18  }
    19  
    20  {{- end }}