// make is needed to create types for use by test
func makevalue(v interface{}) (UnionSassValue, error) {
f := reflect.ValueOf(v)
err := error(nil)
switch f.Kind() {
default:
return C.sass_make_null(), err
case reflect.Bool:
return C.sass_make_boolean(C.bool(v.(bool))), err
case reflect.String:
return C.sass_make_string(C.CString(v.(string))), err
case reflect.Struct: //only SassNumber and color.RGBA are supported
if reflect.TypeOf(v).String() == "context.SassNumber" {
var sn = v.(SassNumber)
return C.sass_make_number(C.double(sn.Value), C.CString(sn.Unit)), err
} else if reflect.TypeOf(v).String() == "color.RGBA" {
var sc = v.(color.RGBA)
return C.sass_make_color(C.double(sc.R), C.double(sc.G), C.double(sc.B), C.double(sc.A)), err
} else {
err = errors.New(fmt.Sprintf("The struct type %s is unsupported for marshalling", reflect.TypeOf(v).String()))
return C.sass_make_null(), err
}
case reflect.Slice:
// Initialize the list
l := C.sass_make_list(C.size_t(f.Len()), C.SASS_COMMA)
for i := 0; i < f.Len(); i++ {
t, er := makevalue(f.Index(i).Interface())
if err == nil && er != nil {
err = er
}
C.sass_list_set_value(l, C.size_t(i), t)
}
return l, err
}
}
// SampleCB example how a callback is defined
func SampleCB(ctx *Context, usv UnionSassValue) UnionSassValue {
var sv []interface{}
Unmarshal(usv, &sv)
return C.sass_make_boolean(false)
}
// MakeBool creates Sass bool from a bool
func MakeBool(b bool) UnionSassValue {
return C.sass_make_boolean(C.bool(b))
}