150 lines
7.1 KiB
HTML
150 lines
7.1 KiB
HTML
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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
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<html>
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<!-- Created by GNU Texinfo 6.8, https://www.gnu.org/software/texinfo/ -->
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<head>
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<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
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<!-- This manual describes ASDF, a system definition facility
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for Common Lisp programs and libraries.
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You can find the latest version of this manual at
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https://common-lisp.net/project/asdf/asdf.html.
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ASDF Copyright (C) 2001-2019 Daniel Barlow and contributors.
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This manual Copyright (C) 2001-2019 Daniel Barlow and contributors.
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This manual revised (C) 2009-2019 Robert P. Goldman and Francois-Rene Rideau.
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Permission is hereby granted, free of charge, to any person obtaining
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a copy of this software and associated documentation files (the
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"Software"), to deal in the Software without restriction, including
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without limitation the rights to use, copy, modify, merge, publish,
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distribute, sublicense, and/or sell copies of the Software, and to
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permit persons to whom the Software is furnished to do so, subject to
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the following conditions:
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The above copyright notice and this permission notice shall be
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included in all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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-->
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<title>Parsing system definitions (ASDF Manual)</title>
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<meta name="description" content="Parsing system definitions (ASDF Manual)">
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<meta name="keywords" content="Parsing system definitions (ASDF Manual)">
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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="The-object-model-of-ASDF.html" rel="up" title="The object model of ASDF">
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<link href="Functions.html" rel="prev" title="Functions">
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</style>
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</head>
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<body lang="en">
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<div class="section" id="Parsing-system-definitions">
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<div class="header">
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<p>
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Previous: <a href="Functions.html" accesskey="p" rel="prev">Functions</a>, Up: <a href="The-object-model-of-ASDF.html" accesskey="u" rel="up">The Object model of ASDF</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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<span id="Parsing-system-definitions-1"></span><h3 class="section">7.5 Parsing system definitions</h3>
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<span id="index-Parsing-system-definitions"></span>
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<span id="index-Extending-ASDF_0027s-defsystem-parser"></span>
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<p>Thanks to Eric Timmons, ASDF now provides hooks to extend how it parses
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<code>defsystem</code> forms.
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</p>
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<p><strong>Warning!</strong> These interfaces are experimental, and as such are not
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exported from the ASDF package yet. We plan to export them in ASDF
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3.4.0. If you use them before they are exported, please subscribe to
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<a href="https://gitlab.common-lisp.net/asdf/asdf/-/issues/76">https://gitlab.common-lisp.net/asdf/asdf/-/issues/76</a> so you are
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made aware of any changes.
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</p>
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<dl class="def">
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<dt id="index-parse_002dcomponent_002dform"><span class="category">Function: </span><span><strong>parse-component-form</strong> <em><var>parent</var> <var>options</var> &key <var>previous-serial-components</var></em><a href='Parsing-system-definitions.html#index-parse_002dcomponent_002dform' class='copiable-anchor'> ¶</a></span></dt>
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<dd>
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<p>This is the core function for parsing a system definition. At the
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moment, we do not expect ASDF extenders to modify this function.
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</p>
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<p>When being called on a <code>component</code> of type <code>system</code> (i.e.,
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inside the <code>defsystem</code> macro), <var>parent</var> will be <code>NIL</code>.
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</p></dd></dl>
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<dl class="def">
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<dt id="index-compute_002dcomponent_002dchildren"><span class="category">Generic function: </span><span><strong>compute-component-children</strong> <em><var>component</var> <var>components</var> <var>serial-p</var></em><a href='Parsing-system-definitions.html#index-compute_002dcomponent_002dchildren' class='copiable-anchor'> ¶</a></span></dt>
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<dd>
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<p>This generic function provides standard means for computing component
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children, but can be extended with additional methods by a programmer.
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</p>
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<p>Returns a list of children (of type <code>component</code>) for <var>component</var>.
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<var>components</var> is a list of the explicitly defined children descriptions.
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<var>serial-p</var> is non-<code>NIL</code> if each child in <var>components</var> should depend on the previous
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children.
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</p>
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</dd></dl>
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<dl class="def">
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<dt id="index-class_002dfor_002dtype"><span class="category">Generic function: </span><span><strong>class-for-type</strong> <em><var>parent</var> <var>type-designator</var></em><a href='Parsing-system-definitions.html#index-class_002dfor_002dtype' class='copiable-anchor'> ¶</a></span></dt>
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<dd>
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<p>Return a <code>class</code> designator to be used to instantiate a component
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whose type is specified by <var>type-designator</var> in the context of
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<var>parent</var>, which should be either a <code>parent-component</code> – or subclass
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thereof – or <code>nil</code> (if the type designator is some class of system).
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</p>
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<p>This generic function provides a means for changing how ASDF translates
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type-designators (like <code>:file</code>) into CLOS classes. It is intended
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for programmers to extend by adding new methods.
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</p>
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<p><strong>Warning!</strong> Adding new methods for <code>class-for-type</code> is
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typically <em>not</em> necessary: much can already be done by using
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<code>:default-component-class</code> and defining (and explicitly calling
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for) new component types.
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</p>
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</dd></dl>
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</div>
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<hr>
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<div class="header">
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<p>
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Previous: <a href="Functions.html">Functions</a>, Up: <a href="The-object-model-of-ASDF.html">The Object model of ASDF</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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</body>
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</html>
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