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<p>文档有两种类型，即markdown文件和API使用参考。本指南介绍了一些工具，并指导如何准备md文件和API注释。</p>
<p>md文件将通过<a href="https://docusaurus.io/">Docusaurus</a>构建成HTML页面；API注释（来自源代码）将用于使用Sphinx（对应Python）和Doxygen（对应CPP）生成API参考页面。</p>
<h2><a class="anchor" aria-hidden="true" id="markdown文件"></a><a href="#markdown文件" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6.25c-1.09.53-2 1.84-2 3.25C6 11.31 7.55 13 9 13h4c1.45 0 3-1.69 3-3.5S14.5 6 13 6z"></path></svg></a>Markdown文件</h2>
<p>请尽量遵循<a href="https://developers.google.com/style">Google Documentation style</a>。例如：</p>
<ol>
<li>删除指令中的&quot;please&quot;。如：'Please click...' VS 'Click...'。</li>
<li>遵循标准的<a href="https://owl.purdue.edu/owl/general_writing/mechanics/help_with_capitals.html">大小写规则</a>。</li>
<li>在说明中用&quot;you&quot;代替&quot;we&quot;。</li>
<li>使用现在时态，避免使用<code>will</code>。</li>
<li>尽量使用主动语态而不是被动。</li>
</ol>
<p>此外，为了使文件一致：</p>
<ol>
<li>句子不宜过长, e.g., 长度&lt;=80</li>
<li>尽量使用相对路径，假设我们在repo的根目录下，例如，<code>doc-site/docs</code>指的是<code>singa-doc/docs-site/docs</code>。</li>
<li>使用背标将命令、路径、类函数和变量亮出来，例如，<code>Tensor</code>, <code>singa-doc/docs-site/docs</code>。</li>
<li>为了突出其他术语/概念，使用 <em>斜体</em> or <strong>加粗</strong></li>
</ol>
<p>本项目使用的<a href="https://prettier.io/">prettier tool</a>会在我们进行git提交时，根据<a href="https://github.com/apache/singa-doc/blob/master/docs-site/.prettierrc">配置</a>自动格式化代码。例如，它会将markdown文件中的文本最多折叠成80个字符（注释行除外）。</p>
<p>在介绍一个概念（如<code>Tensor</code>类）时，要提供概述（目的和与其他概念的关系）、API和例子，还可以用Google colab来演示其用法。</p>
<p>详细的编辑md文件和建立网站的方法请参考<a href="https://github.com/apache/singa-doc/tree/master/docs-site">本页面</a>。</p>
<h2><a class="anchor" aria-hidden="true" id="api-references"></a><a href="#api-references" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6.25c-1.09.53-2 1.84-2 3.25C6 11.31 7.55 13 9 13h4c1.45 0 3-1.69 3-3.5S14.5 6 13 6z"></path></svg></a>API References</h2>
<h3><a class="anchor" aria-hidden="true" id="cpp-api"></a><a href="#cpp-api" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6.25c-1.09.53-2 1.84-2 3.25C6 11.31 7.55 13 9 13h4c1.45 0 3-1.69 3-3.5S14.5 6 13 6z"></path></svg></a>CPP API</h3>
<p>请遵循<a href="https://google.github.io/styleguide/cppguide.html#Comments">Google CPP注释风格</a>.</p>
<p>要生成文档，请从doc文件夹中运行 &quot;doxygen&quot;（推荐使用Doxygen &gt;= 1.8）。</p>
<h3><a class="anchor" aria-hidden="true" id="python-api"></a><a href="#python-api" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6.25c-1.09.53-2 1.84-2 3.25C6 11.31 7.55 13 9 13h4c1.45 0 3-1.69 3-3.5S14.5 6 13 6z"></path></svg></a>Python API</h3>
<p>请遵循<a href="http://google.github.io/styleguide/pyguide.html#38-comments-and-docstrings">Google Python DocString风格</a>.</p>
<h2><a class="anchor" aria-hidden="true" id="visual-studio-code-vscode"></a><a href="#visual-studio-code-vscode" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6.25c-1.09.53-2 1.84-2 3.25C6 11.31 7.55 13 9 13h4c1.45 0 3-1.69 3-3.5S14.5 6 13 6z"></path></svg></a>Visual Studio Code (vscode)</h2>
<p>如果你使用vscode作为编辑器，我们推荐使用以下插件。</p>
<h3><a class="anchor" aria-hidden="true" id="docstring-snippet"></a><a href="#docstring-snippet" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6.25c-1.09.53-2 1.84-2 3.25C6 11.31 7.55 13 9 13h4c1.45 0 3-1.69 3-3.5S14.5 6 13 6z"></path></svg></a>Docstring Snippet</h3>
<p><a href="https://marketplace.visualstudio.com/items?itemName=njpwerner.autodocstring">autoDocstring</a>生成函数、类等的docstring，要注意选择使用<code>google</code>的docString格式。</p>
<h3><a class="anchor" aria-hidden="true" id="spell-check"></a><a href="#spell-check" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6.25c-1.09.53-2 1.84-2 3.25C6 11.31 7.55 13 9 13h4c1.45 0 3-1.69 3-3.5S14.5 6 13 6z"></path></svg></a>Spell Check</h3>
<p><a href="https://marketplace.visualstudio.com/items?itemName=streetsidesoftware.code-spell-checker">Code Spell Checker</a>可以用来检查代码的注释，或<code>.md</code>和<code>.rst</code>文件。</p>
<p>要只对Python代码的注释进行拼写检查，可以在<code>File - Preferences - User Snippets - python.json</code>中添加以下代码段：</p>
<pre><code class="hljs">&quot;cspell check&quot; : {
&quot;prefix&quot;: &quot;cspell&quot;,
&quot;body&quot;: [
    &quot;# Directives for doing spell check only for python and c/cpp comments&quot;,
    &quot;# cSpell:includeRegExp #.* &quot;,
    &quot;# cSpell:includeRegExp (\&quot;\&quot;\&quot;|''')[^\1]*\1&quot;,
    &quot;# cSpell: CStyleComment&quot;,
],
&quot;description&quot;: &quot;# spell check only for python comments&quot;
}
</code></pre>
<p>如果要只对Cpp代码的注释进行拼写检查，可以在<code>File - Preferences - User Snippets - cpp.json</code>中添加以下代码段：</p>
<pre><code class="hljs">&quot;cspell check&quot; : {
&quot;prefix&quot;: &quot;cspell&quot;,
&quot;body&quot;: [
    &quot;// Directive for doing spell check only for cpp comments&quot;,
    &quot;// cSpell:includeRegExp CStyleComment&quot;,
],
&quot;description&quot;: &quot;# spell check only for cpp comments&quot;
}
</code></pre>
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