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Golang C.lua_topointer函數代碼示例

本文整理匯總了Golang中C.lua_topointer函數的典型用法代碼示例。如果您正苦於以下問題：Golang lua_topointer函數的具體用法？Golang lua_topointer怎麽用？Golang lua_topointer使用的例子？那麽, 這裏精選的函數代碼示例或許可以為您提供幫助。


在下文中一共展示了lua_topointer函數的5個代碼示例，這些例子默認根據受歡迎程度排序。您可以為喜歡或者感覺有用的代碼點讚，您的評價將有助於係統推薦出更棒的Golang代碼示例。

示例1: ToPointer

// lua_topointer
func (L *State) ToPointer(index int) uintptr {
	return uintptr(C.lua_topointer(L.s, C.int(index)))
}
開發者ID:szll，項目名稱:golua，代碼行數:4，代碼來源:lua.go

示例2: Topointer

// Converts the value at the given acceptable index to a uintptr. The
// value can be a userdata, a table, a thread, or a function; otherwise,
// Topointer returns nil. Different objects will give different
// pointers. There is no way to convert the pointer back to its original
// value.
//
// Typically this function is used only for debug information.
func (this *State) Topointer(index int) unsafe.Pointer {
	return C.lua_topointer(this.luastate, C.int(index))
}
開發者ID:rdlaitila，項目名稱:leaf，代碼行數:10，代碼來源:State.go

示例3: toGoValue

func (lua *Lua) toGoValue(i C.int, paramType reflect.Type) (ret reflect.Value) {
	luaType := C.lua_type(lua.State, i)
	paramKind := paramType.Kind()
	switch paramKind {
	case reflect.Bool:
		if luaType != C.LUA_TBOOLEAN {
			lua.Panic("not a boolean")
		}
		ret = reflect.ValueOf(C.lua_toboolean(lua.State, i) == C.int(1))
	case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
		if luaType != C.LUA_TNUMBER {
			lua.Panic("not an integer")
		}
		ret = reflect.New(paramType).Elem()
		ret.SetInt(int64(C.lua_tointegerx(lua.State, i, nil)))
	case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64:
		if luaType != C.LUA_TNUMBER {
			lua.Panic("not an unsigned")
		}
		ret = reflect.New(paramType).Elem()
		ret.SetUint(uint64(C.lua_tointegerx(lua.State, i, nil)))
	case reflect.Float32, reflect.Float64:
		if luaType != C.LUA_TNUMBER {
			lua.Panic("not a float")
		}
		ret = reflect.New(paramType).Elem()
		ret.SetFloat(float64(C.lua_tonumberx(lua.State, i, nil)))
	case reflect.Interface:
		switch luaType {
		case C.LUA_TNUMBER:
			ret = reflect.New(floatType).Elem()
			ret.SetFloat(float64(C.lua_tonumberx(lua.State, i, nil)))
		case C.LUA_TSTRING:
			ret = reflect.New(stringType).Elem()
			ret.SetString(C.GoString(C.lua_tolstring(lua.State, i, nil)))
		case C.LUA_TLIGHTUSERDATA:
			ret = reflect.ValueOf(C.lua_topointer(lua.State, i))
		case C.LUA_TBOOLEAN:
			ret = reflect.New(boolType).Elem()
			ret.SetBool(C.lua_toboolean(lua.State, i) == C.int(1))
		//TODO nil
		//TODO table
		default:
			lua.Panic("wrong interface argument: %v", paramKind)
		}
	case reflect.String:
		if luaType != C.LUA_TSTRING {
			lua.Panic("not a string")
		}
		ret = reflect.New(paramType).Elem()
		ret.SetString(C.GoString(C.lua_tolstring(lua.State, i, nil)))
	case reflect.Slice:
		switch luaType {
		case C.LUA_TSTRING:
			ret = reflect.New(paramType).Elem()
			cstr := C.lua_tolstring(lua.State, i, nil)
			ret.SetBytes(C.GoBytes(unsafe.Pointer(cstr), C.int(C.strlen(cstr))))
		case C.LUA_TTABLE:
			ret = reflect.MakeSlice(paramType, 0, 0)
			C.lua_pushnil(lua.State)
			elemType := paramType.Elem()
			for C.lua_next(lua.State, i) != 0 {
				ret = reflect.Append(ret, lua.toGoValue(-1, elemType))
				C.lua_settop(lua.State, -2)
			}
		default:
			lua.Panic("wrong slice argument")
		}
	case reflect.Ptr:
		if luaType != C.LUA_TLIGHTUSERDATA {
			lua.Panic("not a pointer")
		}
		pointer := C.lua_topointer(lua.State, i)
		ret = reflect.NewAt(paramType, unsafe.Pointer(&pointer)).Elem()
	case reflect.Map:
		if luaType != C.LUA_TTABLE {
			lua.Panic("not a map")
		}
		ret = reflect.MakeMap(paramType)
		C.lua_pushnil(lua.State)
		keyType := paramType.Key()
		elemType := paramType.Elem()
		for C.lua_next(lua.State, i) != 0 {
			ret.SetMapIndex(
				lua.toGoValue(-2, keyType),
				lua.toGoValue(-1, elemType))
			C.lua_settop(lua.State, -2)
		}
	case reflect.UnsafePointer:
		ret = reflect.ValueOf(C.lua_topointer(lua.State, i))
	//TODO complex64/128
	//TODO array
	//TODO chan
	//TODO func
	//TODO struct
	default:
		lua.Panic("unknown argument type %v", paramType)
	}
	return
}
開發者ID:reusee，項目名稱:lgo，代碼行數:100，代碼來源:lgo.go

示例4: Topointer

// Converts the value at the given acceptable index to a uintptr. The
// value can be a userdata, a table, a thread, or a function; otherwise,
// Topointer returns nil. Different objects will give different
// pointers. There is no way to convert the pointer back to its original
// value.
//
// Typically this function is used only for debug information.
func (s *State) Topointer(index int) unsafe.Pointer {
	return C.lua_topointer(s.l, C.int(index))
}
開發者ID:halturin，項目名稱:luajit，代碼行數:10，代碼來源:state.go

示例5: toGoValue


//.........這裏部分代碼省略.........
				v.SetFloat(float64(C.lua_tonumber(l.State, i)))
				ret = &v
			case C.LUA_TSTRING:
				v := reflect.New(stringType).Elem()
				v.SetString(C.GoString(C.lua_tolstring(l.State, i, nil)))
				ret = &v
			case C.LUA_TLIGHTUSERDATA, C.LUA_TUSERDATA:
				v := reflect.ValueOf(C.lua_touserdata(l.State, i))
				ret = &v
			case C.LUA_TBOOLEAN:
				v := reflect.New(boolType).Elem()
				v.SetBool(C.lua_toboolean(l.State, i) == C.int(1))
				ret = &v
			case C.LUA_TNIL:
				ret = nil
			default:
				err = fmt.Errorf("unsupported type %s for interface{}", luaTypeName(luaType))
				return
			}
		default:
			err = fmt.Errorf("only interface{} is supported, no %v", paramType)
			return
		}
	case reflect.String:
		if luaType != C.LUA_TSTRING {
			err = fmt.Errorf("not a string")
			return
		}
		v := reflect.New(paramType).Elem()
		v.SetString(C.GoString(C.lua_tolstring(l.State, i, nil)))
		ret = &v
	case reflect.Slice:
		switch luaType {
		case C.LUA_TSTRING:
			v := reflect.New(paramType).Elem()
			cstr := C.lua_tolstring(l.State, i, nil)
			v.SetBytes(C.GoBytes(unsafe.Pointer(cstr), C.int(C.strlen(cstr))))
			ret = &v
		case C.LUA_TTABLE:
			v := reflect.MakeSlice(paramType, 0, 0)
			C.lua_pushnil(l.State)
			elemType := paramType.Elem()
			for C.lua_next(l.State, i) != 0 {
				elemValue, e := l.toGoValue(-1, elemType)
				if e != nil {
					err = e
					return
				}
				// there is no nil value in lua table so elemValue will never be nil
				v = reflect.Append(v, *elemValue)
				C.lua_settop(l.State, -2)
				ret = &v
			}
		default:
			err = fmt.Errorf("wrong slice argument")
			return
		}
	case reflect.Ptr:
		if luaType != C.LUA_TLIGHTUSERDATA {
			err = fmt.Errorf("not a pointer")
			return
		}
		p := C.lua_topointer(l.State, i)
		v := reflect.NewAt(paramType, unsafe.Pointer(&p)).Elem()
		ret = &v
	case reflect.Map:
		if luaType != C.LUA_TTABLE {
			err = fmt.Errorf("not a map")
			return
		}
		v := reflect.MakeMap(paramType)
		C.lua_pushnil(l.State)
		keyType := paramType.Key()
		elemType := paramType.Elem()
		for C.lua_next(l.State, i) != 0 {
			keyValue, e := l.toGoValue(-2, keyType)
			if e != nil {
				err = e
				return
			}
			// table has no nil key so keyValue will not be nil
			elemValue, e := l.toGoValue(-1, elemType)
			if e != nil {
				err = e
				return
			}
			// table has no nil value so elemValue will not be nil
			v.SetMapIndex(*keyValue, *elemValue)
			C.lua_settop(l.State, -2)
		}
		ret = &v
	case reflect.UnsafePointer:
		v := reflect.ValueOf(C.lua_topointer(l.State, i))
		ret = &v
	default:
		err = fmt.Errorf("unsupported toGoValue type %v", paramType)
		return
	}
	return
}
開發者ID:reusee，項目名稱:lua，代碼行數:101，代碼來源:lua.go


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