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From: bpatton on 20 Apr 2008 15:46
I'm trying to define a macro to be able to pass to throw a character
constant and some other values

Here's what I'm defining

#ifndef CR
#define CR << "\n"
#endif
#ifndef FL
#define FL << " (" << __FILE__ << ':' << __LINE__ << ")"
#endif
#ifndef SP
#define SP << ' '
#endif
#ifndef MSG
#define MSG(m) string str(m)
#endif

Here's where I'm trying to use it:

if (file.empty()) throw(MSG("Empty string recieved!") FL CR);


I'm using MSVisual Express 2008
I need for the first element of of the macro to be a constant char as
input to a string
Then have the << from FL and CR to add teh file name and line number
to the string then this will be caught by my catch section.

From: Ian Collins on 20 Apr 2008 17:54
bpatton wrote:
> I'm trying to define a macro to be able to pass to throw a character
> constant and some other values
>
> Here's what I'm defining
>
> #ifndef CR
> #define CR << "\n"
> #endif
> #ifndef FL
> #define FL << " (" << __FILE__ << ':' << __LINE__ << ")"
> #endif
> #ifndef SP
> #define SP << ' '
> #endif
> #ifndef MSG
> #define MSG(m) string str(m)
> #endif
>
> Here's where I'm trying to use it:
>
> if (file.empty()) throw(MSG("Empty string recieved!") FL CR);
>
Why don't you derive a class form a standard exception that include this
additional information? You can then use a macro to construct an
instance of this class.

--
Ian Collins.
From: bpatton on 20 Apr 2008 19:17
On Apr 20, 4:54 pm, Ian Collins <ian-n...(a)hotmail.com> wrote:
> bpatton wrote:
> > I'm trying to define a macro to be able to pass to throw a character
> > constant and some other values
>
> > Here's what I'm defining
>
> > #ifndef CR
> > #define CR << "\n"
> > #endif
> > #ifndef FL
> > #define FL  << " (" << __FILE__ << ':' << __LINE__ << ")"
> > #endif
> > #ifndef SP
> > #define SP << ' '
> > #endif
> > #ifndef MSG
> > #define MSG(m) string str(m)
> > #endif
>
> > Here's where I'm trying to use it:
>
> >    if (file.empty()) throw(MSG("Empty string recieved!") FL CR);
>
> Why don't you derive a class form a standard exception that include this
> additional information?  You can then use a macro to construct an
> instance of this class.
>
> --
> Ian Collins.- Hide quoted text -
>
> - Show quoted text -

?? I don't have a clue what you just said
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