pointer to pointer v2 (#244)

Author: programmingkidx

generate/codegen/gen_method.go

@@ -116,7 +116,7 @@ func (m *Method) WriteGoCallCode(currentModule *modules.Module, typeName string,
 	for idx, p := range m.Params {
 		switch tt := p.Type.(type) {
 		case *typing.ClassType:
-			args = append(args, "objc.Ptr("+p.GoName()+")")
+			args = append(args, p.GoName())
 		case *typing.ProtocolType:
 			pvar := fmt.Sprintf("po%d", idx)
 			cw.WriteLineF("%s := objc.WrapAsProtocol(\"%s\", %s)", pvar, tt.Name, p.GoName())

generate/codegen/gen_param.go

@@ -11,15 +11,22 @@ type Param struct {
 	Type      typing.Type
 	FieldName string // objc param field name(part of function name)
 	Object    bool   // version of param generalized to IObject for protocols
+	IsPtrPtr  bool
 }
 
 func (p *Param) String() string {
 	return p.FieldName + ":" + p.Name
 }
 
-// GoDeclare return go param declare code
+// Return Go parameter code
 func (p *Param) GoDeclare(currentModule *modules.Module, receiveFromObjc bool) string {
-	return p.GoName() + " " + p.Type.GoName(currentModule, receiveFromObjc)
+	returnValue := p.GoName() + " "
+	if p.IsPtrPtr == true { // Example: NSError **error
+		returnValue = returnValue + "unsafe.Pointer"
+	} else {
+		returnValue = returnValue + p.Type.GoName(currentModule, receiveFromObjc)
+	}
+	return returnValue
 }
 
 func (p *Param) ObjcDeclare() string {

generate/members.go

@@ -193,6 +193,7 @@ func (db *Generator) Members(fw string, sym Symbol, covariantTypes []string) (pr
 						Name:      arg.Name,
 						Type:      ptyp,
 						FieldName: st.Method.NameParts[idx],
+						IsPtrPtr:  arg.Type.IsPtrPtr,
 					}
 					params = append(params, param)
 				}