URL
https://opencores.org/ocsvn/openrisc_2011-10-31/openrisc_2011-10-31/trunk
Details |
Compare with Previous |
View Log
Line No. |
Rev |
Author |
Line |
1 |
424 |
jeremybenn |
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
|
2 |
|
|
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
|
3 |
|
|
<html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /><title>Adding Data to Exceptions</title><meta name="generator" content="DocBook XSL Stylesheets V1.75.2" /><meta name="keywords" content=" ISO C++ , library " /><link rel="home" href="../spine.html" title="The GNU C++ Library Documentation" /><link rel="up" href="exceptions.html" title="Chapter 7. Exceptions" /><link rel="prev" href="exceptions.html" title="Chapter 7. Exceptions" /><link rel="next" href="bk01pt03ch08.html" title="Chapter 8. Concept Checking" /></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Adding Data to Exceptions</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="exceptions.html">Prev</a> </td><th width="60%" align="center">Chapter 7. Exceptions</th><td width="20%" align="right"> <a accesskey="n" href="bk01pt03ch08.html">Next</a></td></tr></table><hr /></div><div class="sect1" title="Adding Data to Exceptions"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a id="manual.diagnostics.exceptions.data"></a>Adding Data to Exceptions</h2></div></div></div><p>
|
4 |
|
|
The standard exception classes carry with them a single string as
|
5 |
|
|
data (usually describing what went wrong or where the 'throw' took
|
6 |
|
|
place). It's good to remember that you can add your own data to
|
7 |
|
|
these exceptions when extending the hierarchy:
|
8 |
|
|
</p><pre class="programlisting">
|
9 |
|
|
struct My_Exception : public std::runtime_error
|
10 |
|
|
{
|
11 |
|
|
public:
|
12 |
|
|
My_Exception (const string& whatarg)
|
13 |
|
|
: std::runtime_error(whatarg), e(errno), id(GetDataBaseID()) { }
|
14 |
|
|
int errno_at_time_of_throw() const { return e; }
|
15 |
|
|
DBID id_of_thing_that_threw() const { return id; }
|
16 |
|
|
protected:
|
17 |
|
|
int e;
|
18 |
|
|
DBID id; // some user-defined type
|
19 |
|
|
};
|
20 |
|
|
</pre></div><div class="navfooter"><hr /><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="exceptions.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="exceptions.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="bk01pt03ch08.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">Chapter 7. Exceptions </td><td width="20%" align="center"><a accesskey="h" href="../spine.html">Home</a></td><td width="40%" align="right" valign="top"> Chapter 8. Concept Checking</td></tr></table></div></body></html>
|
© copyright 1999-2024
OpenCores.org, equivalent to Oliscience, all rights reserved. OpenCores®, registered trademark.