func mustBeMap(state State, lvalue int) *reflect.Value {
var vmap *reflect.Value
L := state.L
ltype := C.lua_type(L, C.int(lvalue))
if ltype == C.LUA_TUSERDATA {
ref := C.clua_getGoRef(L, C.int(lvalue))
if ref != nil {
obj := (*refGo)(ref).obj
objValue := reflect.ValueOf(obj)
if objValue.Kind() == reflect.Map {
vmap = &objValue
}
}
}
return vmap
}
func (state State) luaToGoValue(_lvalue int, outType *reflect.Type) (reflect.Value, error) {
L := state.L
lvalue := C.int(_lvalue)
ltype := C.lua_type(L, lvalue)
gkind := reflect.Invalid
if outType != nil {
gkind = (*outType).Kind()
}
switch ltype {
case C.LUA_TNONE, C.LUA_TNIL:
switch gkind {
case reflect.Invalid, reflect.Func, reflect.Ptr, reflect.Interface:
return reflect.ValueOf(nil), nil
}
case C.LUA_TBOOLEAN:
switch gkind {
case reflect.Invalid, reflect.Bool, reflect.Interface:
cv := C.lua_toboolean(L, lvalue)
var v bool
if cv == 0 {
v = false
} else {
v = true
}
return reflect.ValueOf(v), nil
}
//case C.LUA_TLIGHTUSERDATA:
//case C.LUA_TTHREAD:
case C.LUA_TNUMBER:
switch gkind {
case reflect.Int:
v := int(C.lua_tointeger(L, lvalue))
return reflect.ValueOf(v), nil
case reflect.Int8:
v := int8(C.lua_tointeger(L, lvalue))
return reflect.ValueOf(v), nil
case reflect.Int16:
v := int16(C.lua_tointeger(L, lvalue))
return reflect.ValueOf(v), nil
case reflect.Int32:
v := int32(C.lua_tointeger(L, lvalue))
return reflect.ValueOf(v), nil
case reflect.Int64:
v := int64(C.lua_tointeger(L, lvalue))
return reflect.ValueOf(v), nil
case reflect.Uint:
v := uint(C.lua_tointeger(L, lvalue))
return reflect.ValueOf(v), nil
case reflect.Uint8:
v := uint8(C.lua_tointeger(L, lvalue))
return reflect.ValueOf(v), nil
case reflect.Uint16:
v := uint16(C.lua_tointeger(L, lvalue))
return reflect.ValueOf(v), nil
case reflect.Uint32:
v := uint32(C.lua_tointeger(L, lvalue))
return reflect.ValueOf(v), nil
case reflect.Uint64:
v := uint64(C.lua_tointeger(L, lvalue))
return reflect.ValueOf(v), nil
case reflect.Float32:
v := float32(C.lua_tonumber(L, lvalue))
return reflect.ValueOf(v), nil
case reflect.Invalid, reflect.Interface, reflect.Float64:
v := float64(C.lua_tonumber(L, lvalue))
return reflect.ValueOf(v), nil
}
case C.LUA_TSTRING:
switch gkind {
case reflect.Invalid, reflect.String, reflect.Interface:
v := stringFromLua(L, lvalue)
return reflect.ValueOf(v), nil
}
case C.LUA_TTABLE:
if gkind == reflect.Slice && (*outType).Elem() == typeOfKeyValue {
return state.luaTableToKeyValues(int(_lvalue))
}
if gkind == reflect.Invalid || gkind == reflect.Interface || (outType != nil && *outType == reflect.TypeOf(theNullTable)) {
tbl := state.NewLuaTable(int(lvalue))
return reflect.ValueOf(tbl), nil
}
case C.LUA_TFUNCTION:
if gkind == reflect.Invalid || gkind == reflect.Interface || (outType != nil && *outType == reflect.TypeOf(theNullFunction)) {
fn := state.NewLuaFunction(int(lvalue))
return reflect.ValueOf(fn), nil
}
case C.LUA_TUSERDATA:
ref := C.clua_getGoRef(L, lvalue)
if ref != nil {
obj := (*refGo)(ref).obj
objType := reflect.TypeOf(obj)
objValue := reflect.ValueOf(obj)
if gkind == reflect.Invalid || gkind == reflect.Interface {
return objValue, nil
}
if outType != nil {
if objType == *outType {
return objValue, nil
}
if objType.Kind() == reflect.Ptr {
if objType.Elem() == *outType {
return objValue.Elem(), nil
}
}
}
}
}
return reflect.ValueOf(nil),
fmt.Errorf("cannot convert from lua-type `%v' to go-type `%v'",
luaTypeName(ltype), gkind)
}