// encodeTuple translates a Go array to a Python object.
func encodeTuple(array []interface{}) (pyTuple *C.PyObject, err error) {
if len(array) == 0 {
pyTuple = pyEmptyTuple
C.INCREF(pyTuple)
} else {
pyTuple = C.PyTuple_New(C.Py_ssize_t(len(array)))
var ok bool
defer func() {
if !ok {
C.DECREF(pyTuple)
pyTuple = nil
}
}()
for i, item := range array {
var pyItem *C.PyObject
if pyItem, err = encode(item); err != nil {
return
}
C.Tuple_SET_ITEM(pyTuple, C.Py_ssize_t(i), pyItem)
}
ok = true
}
return
}
// newObject wraps a Python object.
func newObject(pyObject *C.PyObject) (o Object) {
t := C.getType(pyObject)
o, _ = newObjectType(t, pyObject)
if t > 3 {
C.INCREF(pyObject)
}
return
}
// encode translates a Go value (or a wrapped Python object) to a Python
// object.
func encode(x interface{}) (pyValue *C.PyObject, err error) {
if x == nil {
pyValue = C.None_INCREF()
return
}
switch value := x.(type) {
case bool:
var i C.long
if value {
i = 1
}
pyValue = C.PyBool_FromLong(i)
case byte: // alias uint8
c := C.char(value)
pyValue = C.PyString_FromStringAndSize(&c, 1)
case complex64:
pyValue = C.PyComplex_FromDoubles(C.double(real(value)), C.double(imag(value)))
case complex128:
pyValue = C.PyComplex_FromDoubles(C.double(real(value)), C.double(imag(value)))
case float32:
pyValue = C.PyFloat_FromDouble(C.double(value))
case float64:
pyValue = C.PyFloat_FromDouble(C.double(value))
case int: // alias rune
pyValue = C.PyInt_FromLong(C.long(value))
case int8:
pyValue = C.PyInt_FromLong(C.long(value))
case int16:
pyValue = C.PyInt_FromLong(C.long(value))
case int32:
pyValue = C.PyInt_FromLong(C.long(value))
case int64:
pyValue = C.Long_FromInt64(C.int64_t(value))
case string:
pyValue = C.String_FromGoStringPtr(unsafe.Pointer(&value))
case uint:
pyValue = C.Long_FromUint64(C.uint64_t(value))
case uint16:
pyValue = C.PyInt_FromLong(C.long(value))
case uint32:
pyValue = C.Long_FromUint64(C.uint64_t(value))
case uint64:
pyValue = C.Long_FromUint64(C.uint64_t(value))
case uintptr:
pyValue = C.Long_FromUint64(C.uint64_t(value))
case []interface{}:
return encodeTuple(value)
case map[interface{}]interface{}:
return encodeDict(value)
case *object:
pyValue = value.pyObject
C.INCREF(pyValue)
default:
err = fmt.Errorf("unable to translate %t to Python", x)
return
}
if pyValue == nil {
err = getError()
}
return
}