92 lines
4.2 KiB
HTML
92 lines
4.2 KiB
HTML
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<!DOCTYPE html>
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<html>
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<!-- Created by GNU Texinfo 7.1, https://www.gnu.org/software/texinfo/ -->
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<!-- This manual documents Guile version 3.0.10.
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Copyright (C) 1996-1997, 2000-2005, 2009-2023 Free Software Foundation,
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Inc.
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Copyright (C) 2021 Maxime Devos
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Copyright (C) 2024 Tomas Volf
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Permission is granted to copy, distribute and/or modify this document
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under the terms of the GNU Free Documentation License, Version 1.3 or
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any later version published by the Free Software Foundation; with no
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Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A
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copy of the license is included in the section entitled "GNU Free
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Documentation License." -->
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<title>GOOPS Error Handling (Guile Reference Manual)</title>
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<link href="index.html" rel="start" title="Top">
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<link href="Concept-Index.html" rel="index" title="Concept Index">
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<link href="index.html#SEC_Contents" rel="contents" title="Table of Contents">
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<link href="GOOPS.html" rel="up" title="GOOPS">
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<link href="GOOPS-Object-Miscellany.html" rel="next" title="GOOPS Object Miscellany">
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<link href="Introspection.html" rel="prev" title="Introspection">
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</head>
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<body lang="en">
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<div class="section-level-extent" id="GOOPS-Error-Handling">
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<div class="nav-panel">
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<p>
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Next: <a href="GOOPS-Object-Miscellany.html" accesskey="n" rel="next">GOOPS Object Miscellany</a>, Previous: <a href="Introspection.html" accesskey="p" rel="prev">Introspection</a>, Up: <a href="GOOPS.html" accesskey="u" rel="up">GOOPS</a> [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Concept-Index.html" title="Index" rel="index">Index</a>]</p>
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</div>
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<hr>
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<h3 class="section" id="Error-Handling-2"><span>8.9 Error Handling<a class="copiable-link" href="#Error-Handling-2"> ¶</a></span></h3>
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<p>The procedure <code class="code">goops-error</code> is called to raise an appropriate error
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by the default methods of the following generic functions:
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</p>
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<ul class="itemize mark-bullet">
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<li><code class="code">slot-missing</code> (see <a class="pxref" href="Accessing-Slots.html">slot-missing</a>)
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</li><li><code class="code">slot-unbound</code> (see <a class="pxref" href="Accessing-Slots.html">slot-unbound</a>)
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</li><li><code class="code">no-method</code> (see <a class="pxref" href="Handling-Invocation-Errors.html">no-method</a>)
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</li><li><code class="code">no-applicable-method</code> (see <a class="pxref" href="Handling-Invocation-Errors.html">no-applicable-method</a>)
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</li><li><code class="code">no-next-method</code> (see <a class="pxref" href="Handling-Invocation-Errors.html">no-next-method</a>)
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</li></ul>
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<p>If you customize these functions for particular classes or metaclasses,
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you may still want to use <code class="code">goops-error</code> to signal any error
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conditions that you detect.
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</p>
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<dl class="first-deffn">
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<dt class="deffn" id="index-goops_002derror"><span class="category-def">procedure: </span><span><strong class="def-name">goops-error</strong> <var class="def-var-arguments">format-string arg …</var><a class="copiable-link" href="#index-goops_002derror"> ¶</a></span></dt>
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<dd><p>Raise an error with key <code class="code">goops-error</code> and error message constructed
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from <var class="var">format-string</var> and <var class="var">arg</var> <small class="enddots">...</small>. Error message
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formatting is as done by <code class="code">scm-error</code>.
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</p></dd></dl>
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</div>
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</body>
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</html>
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