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PyClass.go
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PyClass.go
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package py3
import (
"fmt"
"github.com/aadog/py3-go/cpy3"
"sync"
"syscall"
"unsafe"
)
var SystemClassMap = sync.Map{}
type PyClassGoObj struct {
CallMap sync.Map
}
type PyClass struct {
PyObject
GoObj *PyClassGoObj
}
func (p *PyClass) GetName() string {
return p.GetAttrString("__className__").AsUTF8()
}
func (p *PyClass) AddFunction(name string, fn interface{}) {
p.GoObj.CallMap.Store(name, fn)
}
// PyClassFromInst
// 新建一个对象来自已经存在的对象实例指针。
//
// Create a new object from an existing object instance pointer.
func PyClassFromInst(inst uintptr) *PyClass {
dl := new(PyClass)
dl.instance = inst
dl.ptr = unsafe.Pointer(dl.instance)
name := dl.GetName()
smmodule, _ := SystemClassMap.Load(name)
dl.GoObj = smmodule.(*PyClass).GoObj
return dl
}
func PyClassFromObj(obj *PyObject) *PyClass {
dl := new(PyClass)
dl.PyObject = *obj
name := dl.GetName()
smmodule, _ := SystemClassMap.Load(name)
dl.GoObj = smmodule.(*PyClass).GoObj
return dl
}
func PyClassInstanceMethodForward(self *PyObject, args *PyTuple, method interface{}) *PyObject {
fmt.Println("class call")
// methodType := reflect.TypeOf(method)
// methodValue := reflect.ValueOf(method)
// if methodType.Kind() != reflect.Func {
// return Py_RETURN_NONE().AsObj()
// }
// if int64(methodType.NumIn()) != args.Size() {
// PyErr_SetString(UserException(), fmt.Sprintf("The number of parameters does not match,%d parameter is required, and you have entered %d", methodType.NumIn(), args.Size()))
// return Py_RETURN_NONE().AsObj()
// }
//
// fnArgs := make([]reflect.Value, 0)
// for i := 0; i < methodType.NumIn(); i++ {
// fnArgType := methodType.In(i)
// inArg := args.GetItem(int64(i))
// fnArgs = append(fnArgs, reflect.ValueOf(PyObjectToGo(inArg, fnArgType)))
// }
// rets := methodValue.Call(fnArgs)
// if len(rets) == 1 {
// firstRet := rets[0]
// r := GoToPyObject(firstRet.Interface())
// return r
// } else if len(rets) > 1 {
// l := NewPyList(0)
// for _, r := range rets {
// obj := GoToPyObject(r.Interface())
// defer obj.DecRef()
// l.Append(obj)
// }
// return l.AsObj()
// }
return Py_RETURN_NONE().AsObj()
}
func CreateClass(name string, doc string) *PyClass {
class := &PyClass{}
class.GoObj = new(PyClassGoObj)
dict := map[string]any{}
pClassName := GoToPyObject(name)
defer pClassName.DecRef()
pClassBases := NewPyTuple(0)
defer pClassBases.DecRef()
pClassDic := GoToPyObject(dict)
defer pClassDic.DecRef()
class.instance = cpy3.PyObject_CallFunctionObjArgs(cpy3.PyType_Type(), pClassName.Instance(), pClassBases.Instance(), pClassDic.Instance(), 0)
class.ptr = unsafe.Pointer(class.instance)
class.SetAttrString("__className__", pClassName)
fn := PyObjectFromInst(cpy3.PyCFunction_New(uintptr(unsafe.Pointer(PyClassInstanceMethodCallDef)), PyNil.instance))
defer fn.DecRef()
method := PyObjectFromInst(cpy3.PyInstanceMethod(fn.instance))
defer method.DecRef()
class.SetAttrString("Call", method)
SystemClassMap.Store(name, class)
return class
}
var PyClassInstanceMethodCallDef *cpy3.PyMethodDef
var PyClassInstanceMethodForwardCallBack = syscall.NewCallback(func(self uintptr, args uintptr) uintptr {
pyArgs := PyTupleFromInst(args)
arg1 := pyArgs.GetItem(0)
tp := arg1.Type()
defer tp.DecRef()
if tp.Name() == "str" {
fmt.Println("static")
} else {
pyArgsLen := pyArgs.Size()
if pyArgsLen < 2 {
return Py_RETURN_NONE().instance
}
ForwardCode := pyArgs.GetItem(1).Str()
//处理参数
newArgs := PyTupleFromObj(pyArgs.GetSlice(2, pyArgsLen))
defer newArgs.DecRef()
pySelf := pyArgs.GetItem(0)
PyClass := PyClassFromObj(pySelf)
className := PyClass.GetName()
ifn, ok := PyClass.GoObj.CallMap.Load(ForwardCode)
if ok == false {
PyErr_SetString(UserException(), fmt.Sprintf("%s not find method %s ", className, ForwardCode))
return Py_RETURN_NONE().Instance()
}
return PyClassInstanceMethodForward(pySelf, newArgs, ifn).instance
}
return Py_RETURN_NONE().instance
})
//func init() {
// PyClassInstanceMethodCallDef = &cpy3.PyMethodDef{
// Ml_name: cpy3.GoStrToCStr("Call"),
// Ml_meth: PyClassInstanceMethodForwardCallBack,
// Ml_flags: 3,
// Ml_doc: cpy3.GoStrToCStr("class call forward"),
// }
//}
//func CreateClass(name string, dict map[string]any) *PyClass {
// if dict == nil {
// dict = map[string]any{}
// }
// pClassName := GoToPyObject(name)
// defer pClassName.DecRef()
// pClassBases := NewPyTuple(0)
// defer pClassBases.DecRef()
// pClassDic := GoToPyObject(dict)
// defer pClassDic.DecRef()
// pClass := PyObjectFromInst(cpy3.PyObject_CallFunctionObjArgs(cpy3.PyType_Type(), pClassName.Instance(), pClassBases.Instance(), pClassDic.Instance(), 0))
// pClass.SetAttrString("__className__", NewPyUnicode(name).AsObj())
//
// fnName := "Call"
// methodCallDef := &cpy3.PyMethodDef{
// Ml_name: cpy3.GoStrToCStr(fnName),
// Ml_meth: syscall.NewCallback(func(self uintptr, args uintptr) uintptr {
// pyArgs := PyTupleFromInst(args)
// pyArgsLen := pyArgs.Size()
// if pyArgsLen < 2 {
// return Py_RETURN_NONE().instance
// }
// pySelf := pyArgs.GetItem(0)
// ForwardCode := pyArgs.GetItem(1).Str()
//
// ifn, ok := PyMethodMap.Load(ForwardCode)
// if ok == false {
// return Py_RETURN_NONE().Instance()
// }
// //处理参数
// newArgs := PyTupleFromObj(pyArgs.GetSlice(1, pyArgsLen))
// defer newArgs.DecRef()
// return PyInstanceMethodForward(pySelf, newArgs, ifn).Instance()
// }),
// Ml_flags: 3,
// Ml_doc: cpy3.GoStrToCStr("module call forward"),
// }
// PyMethodMap.Store("x", methodCallDef)
//
// fn := PyObjectFromInst(cpy3.PyCFunction_New(uintptr(unsafe.Pointer(methodCallDef)), PyNil.instance))
// defer fn.DecRef()
// method := PyObjectFromInst(cpy3.PyInstanceMethod(fn.instance))
// defer method.DecRef()
// pClass.SetAttrString(fnName, method)
// return PyClassFromObj(pClass)
//}