in C, I have this :
#define doStuff(var) func(var##_1, var##_2)
void func(int v, int v2)
{
printf("%d, %d\n", v, v2);
}
int main()
{
int myvar_1 = 1;
int myvar_2 = 2;
doStuff(myvar);
// ...
}
I want to do a class to encapsulate the func, but how can I do the
same thing with a class ? I would like to do something like this :
int myvar_1 = 1;
int myvar_2 = 2;
CMyClass c;
c.doStuff(myvar);
How can I do that ?
Thanks for your help,
S. 14 1372 ti*********@gmail.com wrote:
in C, I have this :
#define doStuff(var) func(var##_1, var##_2)
void func(int v, int v2)
{
printf("%d, %d\n", v, v2);
}
int main()
{
int myvar_1 = 1;
int myvar_2 = 2;
doStuff(myvar);
// ...
}
I want to do a class to encapsulate the func, but how can I do the
same thing with a class ? I would like to do something like this :
int myvar_1 = 1;
int myvar_2 = 2;
CMyClass c;
c.doStuff(myvar);
How can I do that ?
I wouldn't. It's a maintenance nightmare.
But if you want to, you do it the exact same way with the exact same
macro. The line c.doStuff(myvar) expands out to c.func(myvar_1, myvar_2)
What's the problem?
On 27 fév, 18:51, red floyd <no.s...@here.dudewrote:
timor.su...@gmail.com wrote:
in C, I have this :
#define doStuff(var) func(var##_1, var##_2)
void func(int v, int v2)
{
printf("%d, %d\n", v, v2);
}
int main()
{
int myvar_1 = 1;
int myvar_2 = 2;
doStuff(myvar);
// ...
}
I want to do a class to encapsulate the func, but how can I do the
same thing with a class ? I would like to do something like this :
int myvar_1 = 1;
int myvar_2 = 2;
CMyClass c;
c.doStuff(myvar);
How can I do that ?
I wouldn't. It's a maintenance nightmare.
But if you want to, you do it the exact same way with the exact same
macro. The line c.doStuff(myvar) expands out to c.func(myvar_1, myvar_2)
What's the problem?
the problem is that I don't know what to put as parameters ...
#define doStuff(var) func(var##_1, var##_2)
void func(int v, int v2)
{
printf("%d, %d\n", v, v2);
}
class MyClass
{
public:
MyClass();
void DoTheStuff(????) // <-- what should I put here ?
{
doStuff(theVar);
}
};
int _tmain(int argc, _TCHAR* argv[])
{
int myvar_1 = 1;
int myvar_2 = 2;
MyClass c;
c.DoTheStuff(myvar);
return 0;
}
with what can i replace the ???
I would like to have a proper solution, but you should know that I
can't modify the macro and I don't have access to the func code
function (this is an example test)
Thanks for your help
best,
S. ti*********@gmail.com wrote:
On 27 fév, 18:51, red floyd <no.s...@here.dudewrote:
>timor.su...@gmail.com wrote:
>>in C, I have this :
>>#define doStuff(var) func(var##_1, var##_2)
>>void func(int v, int v2) { printf("%d, %d\n", v, v2); }
>>int main() { int myvar_1 = 1; int myvar_2 = 2; doStuff(myvar); // ... }
>>I want to do a class to encapsulate the func, but how can I do the same thing with a class ? I would like to do something like this :
>>int myvar_1 = 1; int myvar_2 = 2; CMyClass c; c.doStuff(myvar);
>>How can I do that ?
I wouldn't. It's a maintenance nightmare.
But if you want to, you do it the exact same way with the exact same macro. The line c.doStuff(myvar) expands out to c.func(myvar_1, myvar_2)
What's the problem?
the problem is that I don't know what to put as parameters ...
#define doStuff(var) func(var##_1, var##_2)
void func(int v, int v2)
{
printf("%d, %d\n", v, v2);
}
class MyClass
{
public:
MyClass();
void DoTheStuff(????) // <-- what should I put here ?
{
doStuff(theVar);
}
Nothing. Just implement the 'func' here:
void func(int v, int v2) { ::func(v,v2); }
};
int _tmain(int argc, _TCHAR* argv[])
{
int myvar_1 = 1;
int myvar_2 = 2;
MyClass c;
c.DoTheStuff(myvar);
No, this should be
c.doStuff(myvar);
return 0;
}
with what can i replace the ???
I would like to have a proper solution, but you should know that I
can't modify the macro and I don't have access to the func code
function (this is an example test)
There is no "proper" solution. It's a BAD IDEA(tm) no matter how
you slice it.
V
--
Please remove capital 'A's when replying by e-mail
I do not respond to top-posted replies, please don't ask
On 27 fév, 20:10, "Victor Bazarov" <v.Abaza...@comAcast.netwrote:
timor.su...@gmail.com wrote:
On 27 fév, 18:51, red floyd <no.s...@here.dudewrote:
timor.su...@gmail.com wrote: in C, I have this :
>#define doStuff(var) func(var##_1, var##_2)
>void func(int v, int v2) { printf("%d, %d\n", v, v2); }
>int main() { int myvar_1 = 1; int myvar_2 = 2; doStuff(myvar); // ... }
>I want to do a class to encapsulate the func, but how can I do the same thing with a class ? I would like to do something like this :
>int myvar_1 = 1; int myvar_2 = 2; CMyClass c; c.doStuff(myvar);
>How can I do that ?
I wouldn't. It's a maintenance nightmare.
But if you want to, you do it the exact same way with the exact same
macro. The line c.doStuff(myvar) expands out to c.func(myvar_1,
myvar_2)
What's the problem?
the problem is that I don't know what to put as parameters ...
#define doStuff(var) func(var##_1, var##_2)
void func(int v, int v2)
{
printf("%d, %d\n", v, v2);
}
class MyClass
{
public:
MyClass();
void DoTheStuff(????) // <-- what should I put here ?
{
doStuff(theVar);
}
Nothing. Just implement the 'func' here:
void func(int v, int v2) { ::func(v,v2); }
};
int _tmain(int argc, _TCHAR* argv[])
{
int myvar_1 = 1;
int myvar_2 = 2;
MyClass c;
c.DoTheStuff(myvar);
No, this should be
c.doStuff(myvar);
return 0;
}
with what can i replace the ???
I would like to have a proper solution, but you should know that I
can't modify the macro and I don't have access to the func code
function (this is an example test)
There is no "proper" solution. It's a BAD IDEA(tm) no matter how
you slice it.
V
--
Please remove capital 'A's when replying by e-mail
I do not respond to top-posted replies, please don't ask
This is not what I want to do ...
of course, the macro is really more complex than a simple function
call. That's why I would like a solution where I can use parameter as
in my example.
Is this possible ? ti*********@gmail.com wrote:
[..]
This is not what I want to do ...
What DO you want to do, then?
of course, the macro is really more complex than a simple function
call. That's why I would like a solution where I can use parameter as
in my example.
Is this possible ?
Is WHAT possible?
V
--
Please remove capital 'A's when replying by e-mail
I do not respond to top-posted replies, please don't ask
ok, let me try to explain again :)
imagine that i've an old C style lib, that have many macro like that
(but very more complex) :
#define doStuff(var) {var##_1+=3; if(var##_2>10)
{var##_1+=5;}else{var##_1+=3;}}
I know that it is horrible, that's why I would like to make a C++
wrapper that can encapsulate the macro
today, the call to do stuff, is something like that :
int myvar_1 = 1;
int myvar_2 = 2;
doStuff(myvar);
what I want to do is to achieve to have something like that, that
makes the same thing, with the quite same philosophy, but in object :
Myclass c(myvar);
c.doStuff();
note, that i don't want to do : Myclass c(myvar_1, myvar_2);
this is not possible, the macro are very more complex
Is there's a way in C++ to use the ##xxx like it's done in the macro,
in a constructor (or in a function) ?
I hope it's more clearer
Thanks for your help,
S. ti*********@gmail.com wrote:
ok, let me try to explain again :)
imagine that i've an old C style lib, that have many macro like that
(but very more complex) :
#define doStuff(var) {var##_1+=3; if(var##_2>10)
{var##_1+=5;}else{var##_1+=3;}}
I know that it is horrible, that's why I would like to make a C++
wrapper that can encapsulate the macro
You can't encapsulate a macro, macros are expanded by the preprocessor,
not the compiler.
You could replace the body of the macro with an inline function, say
void realDoStuff( var1, var2 ) { ... }
#define doStuff(var) realDoStuff( var##_1, var##_2 )
--
Ian Collins.
* ti*********@gmail.com:
ok, let me try to explain again :)
imagine that i've an old C style lib, that have many macro like that
(but very more complex) :
#define doStuff(var) {var##_1+=3; if(var##_2>10)
{var##_1+=5;}else{var##_1+=3;}}
I know that it is horrible, that's why I would like to make a C++
wrapper that can encapsulate the macro
today, the call to do stuff, is something like that :
int myvar_1 = 1;
int myvar_2 = 2;
doStuff(myvar);
what I want to do is to achieve to have something like that, that
makes the same thing, with the quite same philosophy, but in object :
Myclass c(myvar);
c.doStuff();
note, that i don't want to do : Myclass c(myvar_1, myvar_2);
this is not possible, the macro are very more complex
Is there's a way in C++ to use the ##xxx like it's done in the macro,
in a constructor (or in a function) ?
I hope it's more clearer
Thanks for your help,
class A
{
private:
int myVar1;
int myVar2;
public:
A( int v1, int v2 ): myVar1( v1 ), myVar2( v2 ) {}
void doStuff( int )
{
myVar1 += (myVar2 10? 8 : 6);
}
};
class B
{
private:
int myVar1;
int myVar2;
public:
B( int v1, int v2 ): myVar1( v1 ), myVar2( v2 ) {}
void doStuff( int )
{
DO_STUFF( myVar1, myVar 2 );
}
};
--
A: Because it messes up the order in which people normally read text.
Q: Why is it such a bad thing?
A: Top-posting.
Q: What is the most annoying thing on usenet and in e-mail?
On 28 fév, 08:38, "Alf P. Steinbach" <a...@start.nowrote:
* timor.su...@gmail.com:
ok, let me try to explain again :)
imagine that i've an old C style lib, that have many macro like that
(but very more complex) :
#define doStuff(var) {var##_1+=3; if(var##_2>10)
{var##_1+=5;}else{var##_1+=3;}}
I know that it is horrible, that's why I would like to make a C++
wrapper that can encapsulate the macro
today, the call to do stuff, is something like that :
int myvar_1 = 1;
int myvar_2 = 2;
doStuff(myvar);
what I want to do is to achieve to have something like that, that
makes the same thing, with the quite same philosophy, but in object :
Myclass c(myvar);
c.doStuff();
note, that i don't want to do : Myclass c(myvar_1, myvar_2);
this is not possible, the macro are very more complex
Is there's a way in C++ to use the ##xxx like it's done in the macro,
in a constructor (or in a function) ?
I hope it's more clearer
Thanks for your help,
class A
{
private:
int myVar1;
int myVar2;
public:
A( int v1, int v2 ): myVar1( v1 ), myVar2( v2 ) {}
void doStuff( int )
{
myVar1 += (myVar2 10? 8 : 6);
}
};
class B
{
private:
int myVar1;
int myVar2;
public:
B( int v1, int v2 ): myVar1( v1 ), myVar2( v2 ) {}
void doStuff( int )
{
DO_STUFF( myVar1, myVar 2 );
}
};
--
A: Because it messes up the order in which people normally read text.
Q: Why is it such a bad thing?
A: Top-posting.
Q: What is the most annoying thing on usenet and in e-mail?
ok, thanks both for your answer.
if macro are expanded by the pre-processor, I can't do what I wanted
to do ... I will find another solution, as you proposed to me.
Best regards,
S.
On 28 Feb, 08:42, timor.su...@gmail.com wrote:
On 28 fév, 08:38, "Alf P. Steinbach" <a...@start.nowrote:
* timor.su...@gmail.com:
ok, let me try to explain again :)
imagine that i've an old C style lib, that have many macro like that
(but very more complex) :
#define doStuff(var) {var##_1+=3; if(var##_2>10)
{var##_1+=5;}else{var##_1+=3;}}
I know that it is horrible, that's why I would like to make a C++
wrapper that can encapsulate the macro
today, the call to do stuff, is something like that :
int myvar_1 = 1;
int myvar_2 = 2;
doStuff(myvar);
what I want to do is to achieve to have something like that, that
makes the same thing, with the quite same philosophy, but in object :
Myclass c(myvar);
c.doStuff();
note, that i don't want to do : Myclass c(myvar_1, myvar_2);
this is not possible, the macro are very more complex
Is there's a way in C++ to use the ##xxx like it's done in the macro,
in a constructor (or in a function) ?
I hope it's more clearer
Thanks for your help,
class A
{
private:
int myVar1;
int myVar2;
public:
A( int v1, int v2 ): myVar1( v1 ), myVar2( v2 ) {}
void doStuff( int )
{
myVar1 += (myVar2 10? 8 : 6);
}
};
class B
{
private:
int myVar1;
int myVar2;
public:
B( int v1, int v2 ): myVar1( v1 ), myVar2( v2 ) {}
void doStuff( int )
{
DO_STUFF( myVar1, myVar 2 );
}
};
--
A: Because it messes up the order in which people normally read text.
Q: Why is it such a bad thing?
A: Top-posting.
Q: What is the most annoying thing on usenet and in e-mail?
ok, thanks both for your answer.
if macro are expanded by the pre-processor, I can't do what I wanted
to do ... I will find another solution, as you proposed to me.
Best regards,
S.- Hide quoted text -
- Show quoted text -
Redesign it all without macros.
It probably can be done but we don't know the model of what you are
trying to do.
On Feb 27, 12:34 pm, timor.su...@gmail.com wrote:
in C, I have this :
#define doStuff(var) func(var##_1, var##_2)
void func(int v, int v2)
{
printf("%d, %d\n", v, v2);
}
int main()
{
int myvar_1 = 1;
int myvar_2 = 2;
doStuff(myvar);
// ...
}
I want to do a class to encapsulate the func, but how can I do the
same thing with a class ? I would like to do something like this :
int myvar_1 = 1;
int myvar_2 = 2;
CMyClass c;
c.doStuff(myvar);
How can I do that ?
Thanks for your help,
S.
Why
int myvar_1 = 1;
ing myvar_2 = 2;
and not
int myvar[2] = { 1, 2 };
or
struct mytype {
int var_1, var2;
mytype(v1, v2) : var_1{v1}, var_2(v2) { }
};
mytype mystruct(1, 2);
?
On 28 fév, 13:02, "W Karas" <wka...@yahoo.comwrote:
On Feb 27, 12:34 pm, timor.su...@gmail.com wrote:
in C, I have this :
#define doStuff(var) func(var##_1, var##_2)
void func(int v, int v2)
{
printf("%d, %d\n", v, v2);
}
int main()
{
int myvar_1 = 1;
int myvar_2 = 2;
doStuff(myvar);
// ...
}
I want to do a class to encapsulate the func, but how can I do the
same thing with a class ? I would like to do something like this :
int myvar_1 = 1;
int myvar_2 = 2;
CMyClass c;
c.doStuff(myvar);
How can I do that ?
Thanks for your help,
S.
Why
int myvar_1 = 1;
ing myvar_2 = 2;
and not
int myvar[2] = { 1, 2 };
or
struct mytype {
int var_1, var2;
mytype(v1, v2) : var_1{v1}, var_2(v2) { }
};
mytype mystruct(1, 2);
?
Because it's only the test example, of course this is more complex,
and my purpose is to re-design it properly
Thanks for your advice.
Best,
S.
On Feb 28, 7:42 pm, timor.su...@gmail.com wrote:
if macro are expanded by the pre-processor, I can't do what
I wanted to do ... I will find another solution
My suggestion would be "if it aint broke, don't fix it!"
Jussi Jumppanen
Author: Zeus for Windows IDE http://www.zeusedit.com
On Feb 28, 8:06 am, timor.su...@gmail.com wrote:
On 28 fév, 13:02, "W Karas" <wka...@yahoo.comwrote:
On Feb 27, 12:34 pm, timor.su...@gmail.com wrote:
in C, I have this :
#define doStuff(var) func(var##_1, var##_2)
void func(int v, int v2)
{
printf("%d, %d\n", v, v2);
}
int main()
{
int myvar_1 = 1;
int myvar_2 = 2;
doStuff(myvar);
// ...
}
I want to do a class to encapsulate the func, but how can I do the
same thing with a class ? I would like to do something like this :
int myvar_1 = 1;
int myvar_2 = 2;
CMyClass c;
c.doStuff(myvar);
How can I do that ?
Thanks for your help,
S.
Why
int myvar_1 = 1;
ing myvar_2 = 2;
and not
int myvar[2] = { 1, 2 };
or
struct mytype {
int var_1, var2;
mytype(v1, v2) : var_1{v1}, var_2(v2) { }
};
mytype mystruct(1, 2);
?
Because it's only the test example, of course this is more complex,
and my purpose is to re-design it properly
Thanks for your advice.
Best,
S.- Hide quoted text -
- Show quoted text -
There is a Boost ( www.boost.org) preprocessor library,
which is amazingly capable given how bad the C/C++
preprocesor is as macro processors go.
If you can forgo the romance of all that pointless
heroism, the Unix m4 macro processor is much more capable.
I don't know if there is a GNU or otherwise highly
portable freeware version of m4.
Back in the 80s, I heard alot of complaints about
how using cpp or m4 in code was too confusing, because
macro calls look just like variables or function calls.
So I tried to write a macro processor with a syntax
that looked like the "macros" in makefiles. The C
source code is on my webpage: http://www.geocities.com/wkaras
It's ok for small things, and could be made more
generally usable with a little work. This thread has been closed and replies have been disabled. Please start a new discussion. Similar topics
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