How to parse the Lua interpreter

Lua interpreterThe running method learning tutorial is the content to be introduced in this article, mainly to understandLUA interpreterAboutInterpreterLet's take a look at the details.

1. Run lua.exe directly and enter the lua statement, such as print ("hello world ")

2. Write print ("hello world" into a file named hello.lua, and put it on the d drive. Then you can open lua.exe and run dofile ("d:/hello. lua") -- previously written as DoFile, which turns out to be lowercase dofile ),Lua interpreterThe command in the file will be executed.

3. Use a command prompt to directly run cmd

 
 

  
  
D:\LUA>lua hello.lua  
  
  
hello world  
  
  
 
  
  
D:\>lua  
  
  
> print("hello")  
  
  
hello  
  
  
 
  
  
D:\>lua d:/lua/hello.lua  
  
  
hello world 
 
 

Simple interpreter code C ++)

 
 

  
  
#include <stdio.h> 
  
  
#include <string.h> 
  
  
#include "lua.hpp"  
  
  
#include "luaconf.h"  
  
  
 
  
  
int main (void)  
  
  
{  
  
  
 char buff[256];  
  
  
 int error;  
  
  
 
  
  
 lua_State *L = lua_open();   
  
  
 
  
  
 luaopen_base(L);     
  
  
 luaopen_table(L);     
  
  
 
  
  
 luaopen_string(L);     
  
  
 luaopen_math(L);     
  
  
 
  
  
 while (fgets(buff, sizeof(buff), stdin) != NULL)  
  
  
 {  
  
  
  error = luaL_loadbuffer(L, buff, strlen(buff), "line") || lua_pcall(L, 0, 0, 0);  
  
  
  if (error)  
  
  
  {  
  
  
   fprintf(stderr, "%s", lua_tostring(L, -1));  
  
  
   lua_pop(L, 1);  
  
  
  }  
  
  
 }  
  
  
 
  
  
 lua_close(L);  
  
  
 return 0;  
  
  
} 
 
 

Summary: AnalysisLua interpreterThe content of the running method learning tutorial is complete. I hope this article will help you!