1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
|
package luar
import (
"reflect"
"github.com/yuin/gopher-lua"
)
// Metatable is the Lua metatable for a Go type.
type Metatable struct {
*lua.LTable
}
// MT returns the metatable for value's type. nil is returned if value's type
// does not use a custom metatable.
func MT(L *lua.LState, value interface{}) *Metatable {
if value == nil {
return nil
}
switch typ := reflect.TypeOf(value); typ.Kind() {
case reflect.Array, reflect.Chan, reflect.Map, reflect.Ptr, reflect.Slice, reflect.Struct:
return &Metatable{
LTable: getMetatable(L, typ),
}
}
return nil
}
func (m *Metatable) method(name string) lua.LValue {
methods := m.RawGetString("methods").(*lua.LTable)
if fn := methods.RawGetString(name); fn != lua.LNil {
return fn
}
return nil
}
func (m *Metatable) fieldIndex(name string) []int {
fields := m.RawGetString("fields").(*lua.LTable)
if index := fields.RawGetString(name); index != lua.LNil {
return index.(*lua.LUserData).Value.([]int)
}
return nil
}
|
