error("assign to undeclared variable '"..n.."'", 2) end mt.__declared[n] = true end rawset(t, n, v) end mt.__index = function (t, n) if not mt.__declared[n] and what() ~= "C" then error("variable '"..n.."' is not declared", 2) end return rawget(t, n) end ...
error("assign to undeclared variable '"..n.."'",2) end mt.__declared[n]=true end rawset(t, n, v) end mt.__index=function(t,n) ifnotmt.__declared[n]andwhat()~="C"then error("variable '"..n.."' is not declared",2) ...
error C2676: binary '<<' : 'class istream_withassign' does not define this operator or a conversion to a type acceptable to the predefined operator error C2676: binary '>>' : 'class ostream_withassign' does not define this operator or a conversion to a type acceptable to the predefined...
1.设置_G的metatable来运行时检测(肯定不能静态检测),当我们对_G表进行更新或者赋值是会触发__newindex 和 __index 元方法, 我们在这里进行约束:如果该变量从未显式的声明过,则抛出"assign to undeclared variable" 和 "variable n is not declared" 错误。 2.如何判断某全局变量是否声明过:debug.getinfo是调...
implementationClass="com.tang.intellij.lua.codeInsight.inspection.UndeclaredVariableInspection"/> <localInspection displayName="Return type" enabledByDefault="false" groupName="Lua > Lint > Type safety" implementationClass="com.tang.intellij.lua.codeInsight.inspection.ReturnTypeInsp...
displayName="Undeclared variable" enabledByDefault="false" groupName="Lua > Lint > Type safety" implementationClass="com.tang.intellij.lua.codeInsight.inspection.UndeclaredVariableInspection"/> <localInspection displayName="Return type" enabledByDefault="false" groupName=...