** Try to "constant-fold" an operation; return 1 iff successful. ** (In this case, 'e1' has the final result.) */

copy strings in stack from top - n up to top - 1 to buffer */

** Copy 'size' bytes from 'src' to 'dest', correcting endianness if ** given 'islittle' is different from native endianness. */

* Creates a new thread * A Lua thread is not really a thread, but rather an "execution stack". * You can destroy the thread by calling destr

** creates a new string object */

** Read an integer numeral from string 'fmt' or return 'df' if ** there is no numeral */

** Ensures expression value is in any register. */

** Ensures expression value is in register 'reg' (and therefore ** 'e' will become a non-relocatable expression). */

** Do the REPL: repeatedly read (load) a line, evaluate (call) it, and ** print any results. */

** Enter first sweep phase. ** The call to 'sweeplist' tries to make pointer point to an object ** inside the list (instead of to the header), so th

* Executes lua code from the stream * @param code A stream that Lua will read its code from */

add node data for return value */ 这里需要添加返回值的类型，如int，string这些

** get field and width arguments for field-manipulation functions, ** checking whether they are valid. ** ('luaL_error' called without 'return' to a

** check whether new label 'lb' matches any pending gotos in current ** block; solves forward jumps */

** try to close a goto with existing labels; this solves backward jumps */

** Completes the execution of an interrupted C function, calling its ** continuation function. */

** Continuation function for 'pcall' and 'xpcall'. Both functions ** already pushed a 'true' before doing the call, so in case of success ** 'finish

** Free registers used by expressions 'e1' and 'e2' (if any) in proper ** order. */

////// @brief Skip intermediate blocks, and generate a maintenance block @param app the application @returns true on success //////