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<pre class=code>
<B><FONT COLOR="#0000FF">signature</FONT></B> MLTON_EXN =
<B><FONT COLOR="#0000FF">sig</FONT></B>
<B><FONT COLOR="#A020F0">val</FONT></B> addExnMessager: (exn -> string option) -> unit
<B><FONT COLOR="#A020F0">val</FONT></B> history: exn -> string list
<B><FONT COLOR="#A020F0">val</FONT></B> defaultTopLevelHandler: exn -> 'a
<B><FONT COLOR="#A020F0">val</FONT></B> getTopLevelHandler: unit -> (exn -> unit)
<B><FONT COLOR="#A020F0">val</FONT></B> setTopLevelHandler: (exn -> unit) -> unit
<B><FONT COLOR="#A020F0">val</FONT></B> topLevelHandler: exn -> 'a
<B><FONT COLOR="#0000FF">end</FONT></B>
</PRE>
<p>
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<ul>
<li>
<p>
<tt>addExnMessager f</tt> <br>
adds <tt>f</tt> as a pretty-printer to be used by <tt>General.exnMessage</tt> for converting exceptions to strings. Messagers are tried in order from most recently added to least recently added.
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<tt>history e</tt> <br>
returns call stack at the point that <tt>e</tt> was first raised. Each element of the list is a file position. The elements are in reverse chronological order, i.e. the function called last is at the front of the list.
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<tt>history e</tt> will return <tt>[]</tt> unless the program is compiled with <tt>-const 'Exn.keepHistory true'</tt>.
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<tt>defaultTopLevelHandler e</tt> <br>
function that behaves as the default top level handler; that is, print out the unhandled exception message for <tt>e</tt> and exit.
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<tt>getTopLevelHandler ()</tt> <br>
get the top level handler.
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<tt>setTopLevelHandler f</tt> <br>
set the top level handler to the function <tt>f</tt>. The function <tt>f</tt> should not raise an exception or return normally.
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<tt>topLevelHandler e</tt> <br>
behaves as if the top level handler received the exception <tt>e</tt>.
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<hr>
Last edited on 2007-08-23 03:43:53 by <span title="c-71-57-91-146.hsd1.il.comcast.net"><a href="MatthewFluet">MatthewFluet</a></span>.
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