CODEWITHSUNDEEP
c++cclassscope
RED SOFT ADAIR
RED SOFT ADAIR

Reputation: 12218

Control access to C++ global scope?

I sometimes have to transform some matured c source code into classes. A problem that sometimes arises is that some functions share global variables. This typically is hard to find.

I just was thinking about, if there is a possibility to disallow a class explicitly to use symbols from the global scope or anything like that. Any ideas?

EDIT:

Of course i could search for all global varialbles and transform them to class members, but that can be somewhat difficult. If the source code has some 1000 lines i can not review all the code. I just wonder, if the compiler could help me to find them.

Upvotes: 2

Views: 187

Answers (1)

iammilind
iammilind

Reputation: 69968

You can put all the global variables in a namespace scope (may be more than 1). After this the compiler will complain for the ex-global variables. Just go and fix accordingly.

Edit: For the new question, No there is no facility from compiler which will single out the global variables. Moreover, finding global variables is easy and does not require code review or restructuring. It's a mechanical job. As soon as you find it, enclose it in a namespace scope. e.g.

int g_value;

converts to,

namespace Globals {
  int g_value;
};

Upvotes: 2

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