// Add imports for each of the methods of the interface, but not the interface
// itself.
func addImportsForInterfaceMethods(imports importMap, it reflect.Type) {
// Handle each method.
for i := 0; i < it.NumMethod(); i++ {
m := it.Method(i)
addImportsForType(imports, m.Type)
}
}
func newControllerInfo(namespace string, t reflect.Type, defaultAction string) *controllerInfo {
typeName := t.String()
if strings.HasPrefix(typeName, "*") {
panic(errInvalidCtrlType(typeName))
}
numMethod := t.NumMethod()
if numMethod < 1 {
panic(errCtrlNoAction(typeName))
}
methods := make([]string, 0, numMethod)
for i := 0; i < numMethod; i++ {
methodInfo := t.Method(i)
numIn := methodInfo.Type.NumIn()
numOut := methodInfo.Type.NumOut()
if numIn != 1 || numOut != 1 {
continue
}
methodName := methodInfo.Name
methods = append(methods, methodName)
}
if len(methods) < 1 {
panic(errCtrlNoAction(typeName))
}
actions := make(map[string]string, len(methods))
for _, m := range methods {
actions[strings.ToLower(m)] = m
}
return &controllerInfo{
NsName: namespace,
CtrlName: getControllerName(t),
CtrlType: t,
Actions: actions,
DefaultAction: defaultAction,
}
}
func createEventHandlersForType(sourceType reflect.Type) handlersMap {
handlers := make(handlersMap)
// Loop through all the methods of the source
methodCount := sourceType.NumMethod()
for i := 0; i < methodCount; i++ {
method := sourceType.Method(i)
// Only match methods that satisfy prefix
if strings.HasPrefix(method.Name, methodHandlerPrefix) {
// Handling methods are defined in code by:
// func (source *MySource) HandleMyEvent(e MyEvent).
// When getting the type of this methods by reflection the signature
// is as following:
// func HandleMyEvent(source *MySource, e MyEvent).
if method.Type.NumIn() == 2 {
eventType := method.Type.In(1)
handler := createEventHandler(method)
handlers[eventType] = handler
}
}
}
return handlers
}
func deepFieldsImpl(ifaceType reflect.Type) []string {
fields := []string{}
if ifaceType.Kind() != reflect.Ptr && ifaceType.Kind() != reflect.Struct {
return fields
}
methods := ifaceType.NumMethod()
for i := 0; i < methods; i++ {
var v reflect.Method
v = ifaceType.Method(i)
fields = append(fields, v.Name)
}
if ifaceType.Kind() == reflect.Ptr {
return fields
}
elements := ifaceType.NumField()
for i := 0; i < elements; i++ {
var v reflect.StructField
v = ifaceType.Field(i)
fields = append(fields, v.Name)
}
return fields
}
func (info *Info) addMethods(jt *Type, t reflect.Type) {
// Add any methods.
var vt reflect.Type
if t.Kind() != reflect.Interface && !isWithoutReceiver(t) {
t = reflect.PtrTo(t)
vt = t.Elem()
}
for i := 0; i < t.NumMethod(); i++ {
m := t.Method(i)
if m.PkgPath != "" {
continue
}
if t.Kind() != reflect.Interface {
m.Type = withoutReceiverType{m.Type}
}
jm := Method{
Name: m.Name,
Type: info.Ref(m.Type),
}
if vt != nil {
_, hasValueMethod := vt.MethodByName(m.Name)
jm.PtrReceiver = !hasValueMethod
}
if jt.Methods == nil {
jt.Methods = make(map[string]*Method)
}
jt.Methods[jm.Name] = &jm
}
}
func (s *Service) findRPCMethods(typ reflect.Type) {
for i := 0; i < typ.NumMethod(); i++ {
m := typ.Method(i)
// Don't register callbacks
if m.Name == "Started" || m.Name == "Stopped" || m.Name == "Registered" || m.Name == "Unregistered" {
continue
}
// Only register exported methods
if m.PkgPath != "" {
continue
}
if m.Type.NumOut() != 1 && m.Type.NumOut() != 2 {
continue
}
s.methods[m.Name] = m.Func
//s.Log.Println("Registered RPC Method: " + m.Name)
s.Log.Item(RegisteredMethod{
Method: m.Name,
})
}
}
func generatemethodsEx(t reflect.Type, ignorefunc func(name string) bool, callobject string, name func(t reflect.Type, m reflect.Method) string) (methods string) {
t2 := t
if t.Kind() == reflect.Ptr {
t2 = t.Elem()
}
for i := 0; i < t.NumMethod(); i++ {
var (
m = t.Method(i)
reason string
)
if m.Name[0] != strings.ToUpper(m.Name[:1])[0] {
reason = "unexported"
goto skip
}
if ignorefunc != nil && ignorefunc(m.Name) {
reason = "in skip list"
goto skip
}
if m, err := generatemethod(m, t2, callobject, name(t2, m)); err != nil {
reason = err.Error()
goto skip
} else {
methods += m
}
continue
skip:
fmt.Printf("Skipping method %s.%s: %s\n", t2, m.Name, reason)
}
return
}
// suitableMethods returns suitable Rpc methods of typ, it will report
// error using log if reportErr is true.
func suitableMethods(typ reflect.Type, reportErr bool) map[string]*methodType {
methods := make(map[string]*methodType)
OUTER:
for m := 0; m < typ.NumMethod(); m++ {
method := typ.Method(m)
mtype := method.Type
mname := method.Name
// Method must be exported.
if method.PkgPath != "" {
continue
}
// Method needs at least one ins: receiver
if mtype.NumIn() < 1 {
if reportErr {
log.Println("method", mname, "has wrong number of ins:", mtype.NumIn())
}
continue
}
// check if all args are exported or built in types
argTypes := make([]reflect.Type, mtype.NumIn()-1)
for i := 1; i < mtype.NumIn(); i++ { // first is the receiver which we don't need
if !isExportedOrBuiltinType(mtype.In(i)) {
if reportErr {
log.Printf("%s argument %d not an exported type - %v\n", mname, i, mtype.In(i))
}
continue
}
argTypes[i-1] = mtype.In(i)
}
// check if all return values are exported or built in types
var hasError bool
outTypes := make([]reflect.Type, mtype.NumOut())
for i := 0; i < mtype.NumOut(); i++ {
if mtype.Out(i) == typeOfError {
if hasError { // verify if there is only a single error returned
if reportErr {
log.Printf("%s returns multiple errors\n", mname)
continue OUTER
}
}
hasError = true
outTypes[i] = mtype.Out(i)
} else if isExportedOrBuiltinType(mtype.Out(i)) {
outTypes[i] = mtype.Out(i)
continue
} else {
if reportErr {
log.Printf("Returned argument #%d for %s is of invalid type %v\n", i, mname, mtype.Out(i))
}
continue OUTER
}
}
methods[mname] = &methodType{method: method, ArgTypes: argTypes, ReplyTypes: outTypes, CanRetErr: hasError}
}
return methods
}
func methods(t reflect.Type) []string {
res := []string{}
for i := 0; i < t.NumMethod(); i++ {
res = append(res, t.Method(i).Name)
}
return res
}
func (c *structCache) Methods(typ reflect.Type) map[string]int {
c.methodsl.RLock()
indxs, ok := c.methods[typ]
c.methodsl.RUnlock()
if ok {
return indxs
}
num := typ.NumMethod()
indxs = make(map[string]int, num)
for i := 0; i < num; i++ {
m := typ.Method(i)
if m.Type.NumIn() > 1 {
continue
}
if m.Type.NumOut() != 1 {
continue
}
indxs[m.Name] = m.Index
}
c.methodsl.Lock()
c.methods[typ] = indxs
c.methodsl.Unlock()
return indxs
}
// TODO: delete when reflect's own MethodByName is released.
func methodByName(typ reflect.Type, name string) (reflect.Method, bool) {
for i := 0; i < typ.NumMethod(); i++ {
if typ.Method(i).Name == name {
return typ.Method(i), true
}
}
return reflect.Method{}, false
}
func buildMethodData(t reflect.Type) map[string]reflect.Value {
data := make(map[string]reflect.Value)
for i, l := 0, t.NumMethod(); i < l; i++ {
m := t.Method(i)
data[strings.ToLower(m.Name)] = m.Func
}
return data
}
func (e *Exchange) getMethodsForType(t reflect.Type) []string {
r := []string{}
for i := 0; i < t.NumMethod(); i++ {
r = append(r, t.Method(i).Name)
}
return r
}
// 合适的方法返回对应的Rpc方法，如果reportError设置为true的话，它会使用log来报告error。
func suitableMethods(typ reflect.Type, reportErr bool) map[string]*methodType {
methods := make(map[string]*methodType)
for m := 0; m < typ.NumMethod(); m++ {
method := typ.Method(m)
mtype := method.Type
mname := method.Name
// Method must be exported.
if method.PkgPath != "" {
continue
}
// Method needs three ins: receiver, *args, *reply.
if mtype.NumIn() != 3 {
if reportErr {
log.Println("method", mname, "has wrong number of ins:", mtype.NumIn())
}
continue
}
// First arg need not be a pointer.
argType := mtype.In(1)
if !isExportedOrBuiltinType(argType) {
if reportErr {
log.Println(mname, "argument type not exported:", argType)
}
continue
}
// Second arg must be a pointer.
replyType := mtype.In(2)
if replyType.Kind() != reflect.Ptr {
if reportErr {
log.Println("method", mname, "reply type not a pointer:", replyType)
}
continue
}
// Reply type must be exported.
if !isExportedOrBuiltinType(replyType) {
if reportErr {
log.Println("method", mname, "reply type not exported:", replyType)
}
continue
}
// Method needs one out.
if mtype.NumOut() != 1 {
if reportErr {
log.Println("method", mname, "has wrong number of outs:", mtype.NumOut())
}
continue
}
// The return type of the method must be error.
if returnType := mtype.Out(0); returnType != typeOfError {
if reportErr {
log.Println("method", mname, "returns", returnType.String(), "not error")
}
continue
}
methods[mname] = &methodType{method: method, ArgType: argType, ReplyType: replyType}
}
return methods
}
func FindMethod(recvType reflect.Type, funcVal reflect.Value) *reflect.Method {
for i := 0; i < recvType.NumMethod(); i++ {
method := recvType.Method(i)
if method.Func.Pointer() == funcVal.Pointer() {
return &method
}
}
return nil
}
// methodIndex returns which method of rt implements the method.
func methodIndex(rt reflect.Type, method string) int {
for i := 0; i < rt.NumMethod(); i++ {
if rt.Method(i).Name == method {
return i
}
}
errorf("internal error: can't find method %s", method)
return 0
}
// ForeachMethod 遍历instance的所有方法
func ForeachMethod(instance reflect.Type, solve func(method reflect.Method) error) error {
for i := 0; i < instance.NumMethod(); i++ {
var err = solve(instance.Method(i))
if err != nil {
return err
}
}
return nil
}
func FindMethod(cType reflect.Type, methodName string) *reflect.Method {
for i := 0; i < cType.NumMethod(); i++ {
method := cType.Method(i)
if strings.ToLower(method.Name) == strings.ToLower(methodName) {
return &method
}
}
return nil
}
func (h *Handler) findHandleFunc(t reflect.Type) *reflect.Method {
for i := 0; i < t.NumMethod(); i++ {
method := t.Method(i)
if method.Name == flaglyHandle {
return &method
}
}
return nil
}
func lookupMethod(t reflect.Type, name string) *reflect.Method {
for i := 0; i < t.NumMethod(); i++ {
m := t.Method(i)
// fmt.Printf("%v: %d: %s\n", t, i, m.Name)
if name == m.Name {
return &m
}
}
return nil
}
func getMethods(it reflect.Type) []reflect.Method {
numMethods := it.NumMethod()
methods := make([]reflect.Method, numMethods)
for i := 0; i < numMethods; i++ {
methods[i] = it.Method(i)
}
return methods
}
func missingMethod(iT, xT reflect.Type) (method string) {
numMethod := iT.NumMethod()
for i := 0; i < numMethod; i += 1 {
method = iT.Method(i).Name
if _, ok := xT.MethodByName(method); !ok {
return
}
}
return ""
}
// payloadMethods loosly bases around suitableMethods from $GOROOT/src/net/rpc/server.go.
func payloadMethods(typ reflect.Type) map[string]reflect.Method {
methods := make(map[string]reflect.Method)
LoopMethods:
for i := 0; i < typ.NumMethod(); i++ {
method := typ.Method(i)
mtype := method.Type
mname := method.Name
if method.PkgPath != "" {
continue LoopMethods
}
switch mtype.NumIn() {
case 2:
eventType := mtype.In(1)
if eventType.Kind() != reflect.Ptr {
log.Println("method", mname, "takes wrong type of event:", eventType)
continue LoopMethods
}
event, ok := payloads.Name(eventType.Elem())
if !ok {
log.Println("method", mname, "takes wrong type of event:", eventType)
continue LoopMethods
}
if _, ok = methods[event]; ok {
panic(fmt.Sprintf("there is more than one method handling %v event", eventType))
}
methods[event] = method
case 3:
if mtype.In(1).Implements(contextType) && mtype.In(2).Kind() == reflect.Ptr {
eventType := mtype.In(2)
event, ok := payloads.Name(eventType.Elem())
if !ok {
log.Println("method", mname, "takes wrong type of event:", eventType)
continue LoopMethods
}
if _, ok = methods[event]; ok {
panic(fmt.Sprintf("there is more than one method handling %v event", eventType))
}
methods[event] = method
continue
}
if mtype.In(1).Kind() != reflect.String || mtype.In(2) != empty {
log.Println("wildcard method", mname, "takes wrong types of arguments")
continue LoopMethods
}
if _, ok := methods["*"]; ok {
panic("there is more than one method handling all events")
}
methods["*"] = method
default:
log.Println("method", mname, "takes wrong number of arguments:", mtype.NumIn())
continue LoopMethods
}
}
return methods
}
// Return the reflect.Method, given a Receiver type and Func value.
func FindMethod(recvType reflect.Type, funcVal reflect.Value) *reflect.Method {
// It is not possible to get the name of the method from the Func.
// Instead, compare it to each method of the Controller.
for i := 0; i < recvType.NumMethod(); i++ {
method := recvType.Method(i)
if method.Func.Pointer() == funcVal.Pointer() {
return &method
}
}
return nil
}
// Given a type t, return all of the methods of t sorted such that source file
// order is preserved. Order across files is undefined. Order within lines is
// undefined.
func getMethodsInSourceOrder(t reflect.Type) []reflect.Method {
// Build the list of methods.
methods := sortableMethodSet{}
for i := 0; i < t.NumMethod(); i++ {
methods = append(methods, t.Method(i))
}
// Sort it.
sort.Sort(methods)
return methods
}
func init() {
var opcode Opcode
var opcodeType reflect.Type = reflect.TypeOf(opcode)
var opcodeValue reflect.Value = reflect.ValueOf(opcode)
numMethods := opcodeType.NumMethod()
for i := 0; i < numMethods; i++ {
funcName := opcodeType.Method(i).Name
funcValue := opcodeValue.Method(i)
funcTable[funcName] = funcValue
}
}
func (s *Server) RegisterWithConfig(c interface{}, prefix string, cfg *ResponseConfig) error {
var t reflect.Type
v := reflect.ValueOf(c)
if v.Kind() != reflect.Ptr {
return fmt.Errorf("Invalid controller object passed (%s). Controller object should be a pointer", v.Kind())
}
t = reflect.TypeOf(c)
controllerName := reflect.Indirect(v).Type().Name()
s.Log().Info(fmt.Sprintf("Registering %s", controllerName))
path := prefix
fixUrlPath(&path, true, true)
controllerName = strings.ToLower(controllerName)
if strings.HasSuffix(controllerName, "controller") {
controllerName = controllerName[0 : len(controllerName)-len("controller")]
}
path += controllerName + "/"
if t == nil {
}
methodCount := t.NumMethod()
for mi := 0; mi < methodCount; mi++ {
method := t.Method(mi)
// validate if this method match FnContent
isFnContent := false
tm := method.Type
if tm.NumIn() == 2 && tm.In(1).String() == "*knot.Request" {
if tm.NumOut() == 1 && tm.Out(0).Kind() == reflect.Interface {
isFnContent = true
}
}
if isFnContent {
var fnc FnContent
fnc = v.MethodByName(method.Name).Interface().(func(*Request) interface{})
methodName := method.Name
handlerPath := path + strings.ToLower(methodName)
s.Log().Info(fmt.Sprintf("Registering handler for %s", handlerPath))
newcfg := NewResponseConfig()
*newcfg = *cfg
if newcfg.OutputType == OutputTemplate && newcfg.ViewName == "" {
newcfg.ViewName = strings.Join([]string{
strings.ToLower(controllerName),
strings.ToLower(methodName)}, "/") + ".html"
}
s.RouteWithConfig(handlerPath, fnc, newcfg)
}
}
return nil
}
func ScanMethod(t reflect.Type) map[string]int {
var (
methods map[string]int = make(map[string]int, t.NumMethod())
name string
)
for i := 0; i < t.NumMethod(); i++ {
name = t.Method(i).Name
if len(name) > 5 && name[0:4] == "Act_" {
methods[strings.ToLower(name[4:])] = i
}
}
return methods
}
func (ctx *Context) pushStructMethods(obj int, t reflect.Type, v reflect.Value) {
mCount := t.NumMethod()
for i := 0; i < mCount; i++ {
methodName := t.Method(i).Name
if !isExported(methodName) {
continue
}
ctx.PushGoFunction(v.Method(i).Interface())
ctx.PutPropString(obj, nameToJavaScript(methodName))
}
}
func typeString_Interface(
t reflect.Type,
pkgPath string) (s string) {
var methods []string
for i := 0; i < t.NumMethod(); i++ {
m := t.Method(i)
mString := typeString_FuncOrMethod(m.Name, m.Type, pkgPath)
methods = append(methods, mString)
}
s = fmt.Sprintf("interface { %s }", strings.Join(methods, "; "))
return
}
