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Golang C.lua_tonumber函數代碼示例

本文整理匯總了Golang中C.lua_tonumber函數的典型用法代碼示例。如果您正苦於以下問題：Golang lua_tonumber函數的具體用法？Golang lua_tonumber怎麽用？Golang lua_tonumber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_tonumber函數的10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: main

func main() {

	L := C.luaL_newstate()
	defer C.lua_close(L)

	C.luaL_openlibs(L) /* Load Lua libraries */
	C.luaopen_cmsgpack(L)

	sumS := C.CString(sum)
	defer C.free(unsafe.Pointer(sumS))

	C.luaL_loadstring(L, sumS)

	msg, _ := msgpack.Marshal([]int{1, 2, 3, 4, 5, 6})
	C.lua_pushstring(L, cptr(msg))

	dstr := C.CString("mpdata")
	defer C.free(unsafe.Pointer(dstr))
	C.luaSetglobal(L, dstr)

	C.luaExecute(L)

	sum := C.lua_tonumber(L, -1)

	fmt.Println(sum) // Output: 21
}
開發者ID:KanwarGill，項目名稱:trifles，代碼行數:26，代碼來源:main.go

示例2: packLuaNumber

func packLuaNumber(out io.Writer, state State, object int) (n int, err error) {
	value := float64(C.lua_tonumber(state.L, C.int(object)))
	i := int64(value)
	if float64(i) == value {
		return P.PackVarint(out, i)
	}
	return P.PackFloat64(out, value)
}
開發者ID:hxyxj，項目名稱:goinfi，代碼行數:8，代碼來源:pack.go

示例3: ToNumber

// lua_tonumber
func (L *State) ToNumber(index int) float64 {
	return float64(C.lua_tonumber(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4: Tonumber

// Converts the Lua value at the given valid index to a float64. The
// Lua value must be a number or a string convertible to a number; otherwise,
// Tonumber returns 0.
func (this *State) Tonumber(index int) float64 {
	return float64(C.lua_tonumber(this.luastate, C.int(index)))
}
開發者ID:rdlaitila，項目名稱:leaf，代碼行數:6，代碼來源:State.go

示例5: golua_interface_newindex_callback

//export golua_interface_newindex_callback
func golua_interface_newindex_callback(Li interface{}, iid uint, field_name_cstr *C.char) int {
	L := Li.(*State)
	iface := L.registry[iid]
	ifacevalue := reflect.ValueOf(iface).Elem()

	field_name := C.GoString(field_name_cstr)

	fval := ifacevalue.FieldByName(field_name)

	if fval.Kind() == reflect.Ptr {
		fval = fval.Elem()
	}

	luatype := LuaValType(C.lua_type(L.s, 3))

	switch fval.Kind() {
	case reflect.Bool:
		if luatype == LUA_TBOOLEAN {
			fval.SetBool(int(C.lua_toboolean(L.s, 3)) != 0)
			return 1
		} else {
			L.PushString("Wrong assignment to field " + field_name)
			return -1
		}

	case reflect.Int:
		fallthrough
	case reflect.Int8:
		fallthrough
	case reflect.Int16:
		fallthrough
	case reflect.Int32:
		fallthrough
	case reflect.Int64:
		if luatype == LUA_TNUMBER {
			fval.SetInt(int64(C.lua_tointeger(L.s, 3)))
			return 1
		} else {
			L.PushString("Wrong assignment to field " + field_name)
			return -1
		}

	case reflect.Uint:
		fallthrough
	case reflect.Uint8:
		fallthrough
	case reflect.Uint16:
		fallthrough
	case reflect.Uint32:
		fallthrough
	case reflect.Uint64:
		if luatype == LUA_TNUMBER {
			fval.SetUint(uint64(C.lua_tointeger(L.s, 3)))
			return 1
		} else {
			L.PushString("Wrong assignment to field " + field_name)
			return -1
		}

	case reflect.String:
		if luatype == LUA_TSTRING {
			fval.SetString(C.GoString(C.lua_tolstring(L.s, 3, nil)))
			return 1
		} else {
			L.PushString("Wrong assignment to field " + field_name)
			return -1
		}

	case reflect.Float32:
		fallthrough
	case reflect.Float64:
		if luatype == LUA_TNUMBER {
			fval.SetFloat(float64(C.lua_tonumber(L.s, 3)))
			return 1
		} else {
			L.PushString("Wrong assignment to field " + field_name)
			return -1
		}
	}

	L.PushString("Unsupported type of field " + field_name + ": " + fval.Type().String())
	return -1
}
開發者ID:1lann，項目名稱:golua，代碼行數:84，代碼來源:golua.go

示例6: Tonumber

// Converts the Lua value at the given valid index to a float64. The
// Lua value must be a number or a string convertible to a number; otherwise,
// Tonumber returns 0.
func (s *State) Tonumber(index int) float64 {
	return float64(C.lua_tonumber(s.l, C.int(index)))
}
開發者ID:halturin，項目名稱:luajit，代碼行數:6，代碼來源:state.go

示例7: toGoValue

func (l *Lua) toGoValue(i C.int, paramType reflect.Type) (ret *reflect.Value, err error) {
	luaType := C.lua_type(l.State, i)
	paramKind := paramType.Kind()
	switch paramKind {
	case reflect.Bool:
		if luaType != C.LUA_TBOOLEAN {
			err = fmt.Errorf("not a boolean")
			return
		}
		v := reflect.ValueOf(C.lua_toboolean(l.State, i) == C.int(1))
		ret = &v
	case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
		if luaType != C.LUA_TNUMBER {
			err = fmt.Errorf("not an integer")
			return
		}
		v := reflect.New(paramType).Elem()
		v.SetInt(int64(C.lua_tointeger(l.State, i)))
		ret = &v
	case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64:
		if luaType != C.LUA_TNUMBER {
			err = fmt.Errorf("not a unsigned")
			return
		}
		v := reflect.New(paramType).Elem()
		v.SetUint(uint64(C.lua_tointeger(l.State, i)))
		ret = &v
	case reflect.Float32, reflect.Float64:
		if luaType != C.LUA_TNUMBER {
			err = fmt.Errorf("not a float")
			return
		}
		v := reflect.New(paramType).Elem()
		v.SetFloat(float64(C.lua_tonumber(l.State, i)))
		ret = &v
	case reflect.Interface:
		switch paramType {
		case interfaceType:
			switch luaType {
			case C.LUA_TNUMBER:
				v := reflect.New(floatType).Elem() // always return float64 for interface{}
				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 {
//.........這裏部分代碼省略.........
開發者ID:reusee，項目名稱:lua，代碼行數:101，代碼來源:lua.go

示例8: luaToGoValue

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
			}

//.........這裏部分代碼省略.........
開發者ID:hxyxj，項目名稱:goinfi，代碼行數:101，代碼來源:convert.go

示例9: getNumber

func (L *State) getNumber(i int) (ret float64) {
	return float64(C.lua_tonumber(L.s, C.int(i+1)))
}
開發者ID:gooops，項目名稱:glua，代碼行數:3，代碼來源:glua.go

示例10: Tonumber

func Tonumber(s *State, index int) float64 {
	return float64(
		C.lua_tonumber((*C.lua_State)(s),
			C.int(index)))
}
開發者ID:vron，項目名稱:lua，代碼行數:5，代碼來源:core.go


注：本文中的C.lua_tonumber函數示例由純淨天空整理自Github/MSDocs等開源代碼及文檔管理平台，相關代碼片段篩選自各路編程大神貢獻的開源項目，源碼版權歸原作者所有，傳播和使用請參考對應項目的License；未經允許，請勿轉載。