Throw {@link LuaError} indicating index was attempted on illegal type @throws LuaError when called.

foo[exp]

Find the next integer-key,value pair if {@code this} is a table, return {@link #NIL} if there are no more, or throw a {@link LuaError} if not a table.

It uses "currentToken" and "expectedTokenSequences" to generate a parse error message and returns it. If this object has been created due to a parse

Return true if this is a TailcallVarargs @return true if a tail call, false otherwise

Test if a class name should be considered a user class and loaded by this loader, or a system class and loaded by the system loader. @param classname

Check if {@code this} is a {@code number} @return true if this is a {@code number}, meaning derives from {@link LuaNumber} or derives from {@link LuaS

Tests if a value exists at argument i. @param i the index of the argument to test, 1 is the first argument @return true if the argument exists, false