user_ty::become Class Reference

#include <user.h>

Public Member Functions
	become (user_ty::pointer a_up)
	~become ()
Private Member Functions
	become (const become &)
become &	operator= (const become &)
Private Attributes
user_ty::pointer	up

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Detailed Description

The user_ty::become class is used to take care of becoming a user, and then ceasing to become that user at the end of the scope. For example:

{ user_ty::become scoped(up); ...glue... if (something) return; ...execute... }

No matter how the flow of execution leaves the scope (break, continue, return, exceptions) the become_end will always occur, because the destructor is automatically called by the compiler.

This is an example of the Resoure Acquisition Is Initialisation (RAII) design pattern.

Definition at line 386 of file user.h.

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Constructor & Destructor Documentation

user_ty::become::become

(

user_ty::pointer

a_up

)

[inline]

The constructor. Start impersonating the user.

Definition at line 392 of file user.h.

user_ty::become::~become

(

)

[inline]

The destructor. Stop impersonating the user.

Definition at line 401 of file user.h.

user_ty::become::become

(

const become &

)

[private]

The copy constructor. Do not use.

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Member Function Documentation

become& user_ty::become::operator=

(

const become &

)

[private]

The assignment operator. Do not use.

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Field Documentation

user_ty::pointer user_ty::become::up [private]

The up instance variable is used to remember which user is being impersonated.

Definition at line 411 of file user.h.

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The documentation for this class was generated from the following file:

• /home/archives/aegis/branch.4/branch.25/delta28933.505/libaegis/user.h