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tolua reference
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Using Lua API and tag method facilities, tolua maps C/C++ constants, external variables, functions, classes, and methods to Lua.
How tolua works
(1)创建a package file (a C/C++ cleaned header file) listing the constants, variables, functions, classes, and methods we want to export to the Lua environment.
(2)parses this file and creates a C/C++ file that automatically binds the C/C++ code to Lua.
(3) accesed from Lua
How to use toLua
由(1)an executable (2)and a library组成
the executable represents the parser that reads a package file and output a C/C++ code that implements the binding to access the C/C++ features from Lua.
tolua -o myfile.c myfile.pkg
tolua -n pkgname -o myfile.c myfile.pkg
when using C++, we can opt for automatic initialization
tolua -a -n pkgname -o myfile.c myfile.pkg
automatic initialization sometimes does not work
也能够调用tolua_pkgname_close(void);解绑
能够使用-H选项将open与close操作导出到头文件里。
void tolua_restorestate (void);
Basic Concepts
package file may include other package file, use $<include_file>
Basic types
char int float double -> number
char* -> string
void* -> userdata
tolua ignores const modifier
Functions in C/C++ can also manipulate Lua objects explicitly.
lua_Object也是一种基本类型。
User defined types
非Basic Types均为用户自己定义类型，are mapped to tagged userdata type in Lua.
Lua can only store pointers to 自己定义类型。
NULL and nil
原文：http://www.cnblogs.com/lxjshuju/p/6971409.html
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