Add fail templates

This commit is contained in:
2020-07-02 19:59:01 +02:00
parent cd80913346
commit 8f27c5e552
3 changed files with 127 additions and 84 deletions

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@@ -102,7 +102,7 @@ function main() {
<a class="reference reference-toplevel" href="#7" id="57">Types</a>
<ul class="simple simple-toc-section">
<li><a class="reference" href="#OP"
title="OP[T] = object of RootObj
title="OP[T] = object
case isOk*: bool
of true:
val*: T
@@ -119,13 +119,21 @@ function main() {
title="ok[T](val: T): OP[T]"><wbr />ok<span class="attachedType">OP</span></a></li>
<li><a class="reference" href="#fail%2COP%2Cstring"
title="fail(op: OP; msg: string): OP"><wbr />fail<span class="attachedType">OP</span></a></li>
<li><a class="reference" href="#fail%2Cstring"
title="fail[T](msg: string): OP[T]"><wbr />fail<span class="attachedType">OP</span></a></li>
<li><a class="reference" href="#fail%2Ctypedesc%2Cstring"
title="fail(T: typedesc; msg: string): OP[T]"><wbr />fail<span class="attachedType">OP</span></a></li>
</ul>
</li>
<li>
<a class="reference reference-toplevel" href="#18" id="68">Templates</a>
<ul class="simple simple-toc-section">
<li><a class="reference" href="#fail.t%2C%2Cstring"
title="fail[T; ](O: type OP[T]; msg: string): O:type"><wbr />fail<span class="attachedType">OP</span></a></li>
<li><a class="reference" href="#fail.t%2Cstatic%5Bstring%5D"
title="fail(msg: static[string]): auto"><wbr />fail<span class="attachedType"></span></a></li>
</ul>
</li>
</ul>
@@ -142,7 +150,7 @@ function main() {
<h1><a class="toc-backref" id="basic-usage" href="#basic-usage">Basic Usage</a></h1><pre class="listing"><span class="Keyword">proc</span> <span class="Identifier">divide</span><span class="Punctuation">(</span><span class="Identifier">a</span><span class="Punctuation">,</span> <span class="Identifier">b</span><span class="Punctuation">:</span> <span class="Identifier">int</span><span class="Punctuation">)</span><span class="Punctuation">:</span> <span class="Identifier">OP</span><span class="Punctuation">[</span><span class="Identifier">float</span><span class="Punctuation">]</span> <span class="Operator">=</span>
<span class="Comment">## This could fail</span>
<span class="Keyword">if</span> <span class="Identifier">b</span> <span class="Operator">==</span> <span class="DecNumber">0</span><span class="Punctuation">:</span>
<span class="Keyword">return</span> <span class="Identifier">fail</span><span class="Punctuation">(</span><span class="Identifier">float</span><span class="Punctuation">,</span> <span class="StringLit">&quot;Cannot divide by zero!&quot;</span><span class="Punctuation">)</span>
<span class="Keyword">return</span> <span class="Identifier">fail</span> <span class="StringLit">&quot;Cannot divide by zero!&quot;</span>
<span class="Keyword">else</span><span class="Punctuation">:</span>
<span class="Keyword">return</span> <span class="Identifier">ok</span> <span class="Identifier">a</span> <span class="Operator">/</span> <span class="Identifier">b</span> <span class="Comment"># Wrap the result</span>
@@ -153,7 +161,7 @@ function main() {
<h1><a class="toc-backref" href="#7">Types</a></h1>
<dl class="item">
<a id="OP"></a>
<dt><pre><a href="op.html#OP"><span class="Identifier">OP</span></a><span class="Other">[</span><span class="Identifier">T</span><span class="Other">]</span> <span class="Other">=</span> <span class="Keyword">object</span> <span class="Keyword">of</span> <span class="Identifier">RootObj</span>
<dt><pre><a href="op.html#OP"><span class="Identifier">OP</span></a><span class="Other">[</span><span class="Identifier">T</span><span class="Other">]</span> <span class="Other">=</span> <span class="Keyword">object</span>
<span class="Keyword">case</span> <span class="Identifier">isOk</span><span class="Operator">*</span><span class="Other">:</span> <span class="Identifier">bool</span>
<span class="Keyword">of</span> <span class="Identifier">true</span><span class="Other">:</span>
<span class="Identifier">val</span><span class="Operator">*</span><span class="Other">:</span> <span class="Identifier">T</span>
@@ -164,7 +172,9 @@ function main() {
</pre></dt>
<dd>
Object to wrap the result of an operation<ul class="simple"><li><tt class="docutils literal"><span class="pre">isOk</span></tt>: Indicates if the operation was successful</li>
<p>Object to wrap the result of an operation.</p>
<p>The type is discriminated by the <tt class="docutils literal"><span class="pre">isOK</span></tt> bool. So it is an compiler error to try to access the value without checking if the operation was successful.</p>
<ul class="simple"><li><tt class="docutils literal"><span class="pre">isOk</span></tt>: Indicates if the operation was successful</li>
<li><tt class="docutils literal"><span class="pre">val</span></tt>: If successful, this will hold the real result value</li>
<li><tt class="docutils literal"><span class="pre">error</span></tt>: Otherwise this will hold an error message</li>
</ul>
@@ -177,14 +187,14 @@ Object to wrap the result of an operation<ul class="simple"><li><tt class="docut
<h1><a class="toc-backref" href="#12">Procs</a></h1>
<dl class="item">
<a id="ok,T"></a>
<dt><pre><span class="Keyword">proc</span> <a href="#ok%2CT"><span class="Identifier">ok</span></a><span class="Other">[</span><span class="Identifier">T</span><span class="Other">]</span><span class="Other">(</span><span class="Identifier">val</span><span class="Other">:</span> <span class="Identifier">T</span><span class="Other">)</span><span class="Other">:</span> <a href="op.html#OP"><span class="Identifier">OP</span></a><span class="Other">[</span><span class="Identifier">T</span><span class="Other">]</span></pre></dt>
<dt><pre><span class="Keyword">proc</span> <a href="#ok%2CT"><span class="Identifier">ok</span></a><span class="Other">[</span><span class="Identifier">T</span><span class="Other">]</span><span class="Other">(</span><span class="Identifier">val</span><span class="Other">:</span> <span class="Identifier">T</span><span class="Other">)</span><span class="Other">:</span> <a href="op.html#OP"><span class="Identifier">OP</span></a><span class="Other">[</span><span class="Identifier">T</span><span class="Other">]</span> <span><span class="Other">{</span><span class="Other pragmadots">...</span><span class="Other">}</span></span><span class="pragmawrap"><span class="Other">{.</span><span class="pragma"><span class="Identifier">inline</span></span><span class="Other">.}</span></span></pre></dt>
<dd>
Wraps the given value in a successful operation result.
</dd>
<a id="fail,OP,string"></a>
<dt><pre><span class="Keyword">proc</span> <a href="#fail%2COP%2Cstring"><span class="Identifier">fail</span></a><span class="Other">(</span><span class="Identifier">op</span><span class="Other">:</span> <a href="op.html#OP"><span class="Identifier">OP</span></a><span class="Other">;</span> <span class="Identifier">msg</span><span class="Other">:</span> <span class="Identifier">string</span><span class="Other">)</span><span class="Other">:</span> <span class="Identifier">OP</span></pre></dt>
<dt><pre><span class="Keyword">proc</span> <a href="#fail%2COP%2Cstring"><span class="Identifier">fail</span></a><span class="Other">(</span><span class="Identifier">op</span><span class="Other">:</span> <a href="op.html#OP"><span class="Identifier">OP</span></a><span class="Other">;</span> <span class="Identifier">msg</span><span class="Other">:</span> <span class="Identifier">string</span><span class="Other">)</span><span class="Other">:</span> <span class="Identifier">OP</span> <span><span class="Other">{</span><span class="Other pragmadots">...</span><span class="Other">}</span></span><span class="pragmawrap"><span class="Other">{.</span><span class="pragma"><span class="Identifier">inline</span></span><span class="Other">.}</span></span></pre></dt>
<dd>
Will create a new operation result with the given error message. The type for the operation result is taken from the <tt class="docutils literal"><span class="pre">op</span></tt> argument.
@@ -197,26 +207,35 @@ Will create a new operation result with the given error message. The type for th
<span class="Identifier">assert</span> <span class="Identifier">data</span><span class="Other">.</span><span class="Identifier">error</span> <span class="Operator">==</span> <span class="StringLit">&quot;Not implemented!&quot;</span></pre>
</dd>
<a id="fail,string"></a>
<dt><pre><span class="Keyword">proc</span> <a href="#fail%2Cstring"><span class="Identifier">fail</span></a><span class="Other">[</span><span class="Identifier">T</span><span class="Other">]</span><span class="Other">(</span><span class="Identifier">msg</span><span class="Other">:</span> <span class="Identifier">string</span><span class="Other">)</span><span class="Other">:</span> <a href="op.html#OP"><span class="Identifier">OP</span></a><span class="Other">[</span><span class="Identifier">T</span><span class="Other">]</span></pre></dt>
<a id="fail,typedesc,string"></a>
<dt><pre><span class="Keyword">proc</span> <a href="#fail%2Ctypedesc%2Cstring"><span class="Identifier">fail</span></a><span class="Other">(</span><span class="Identifier">T</span><span class="Other">:</span> <span class="Identifier">typedesc</span><span class="Other">;</span> <span class="Identifier">msg</span><span class="Other">:</span> <span class="Identifier">string</span><span class="Other">)</span><span class="Other">:</span> <a href="op.html#OP"><span class="Identifier">OP</span></a><span class="Other">[</span><span class="Identifier">T</span><span class="Other">]</span> <span><span class="Other">{</span><span class="Other pragmadots">...</span><span class="Other">}</span></span><span class="pragmawrap"><span class="Other">{.</span><span class="pragma"><span class="Identifier">inline</span></span><span class="Other">.}</span></span></pre></dt>
<dd>
<p>Will create a new operation result with the given error message. The type for the operation result is given explicitly.</p>
<p><strong>See Also:</strong></p>
<ul class="simple"><li><a class="reference external" href="#fail,OP,string">fail proc</a></li>
<li><a class="reference external" href="#fail.t,static[string]">fail template</a></li>
</ul>
<p><strong class="examples_text">Examples:</strong></p>
<pre class="listing"><span class="Keyword">let</span> <span class="Identifier">res</span> <span class="Other">=</span> <span class="Identifier">fail</span><span class="Other">[</span><span class="Identifier">seq</span><span class="Other">[</span><span class="Identifier">float</span><span class="Other">]</span><span class="Other">]</span> <span class="StringLit">&quot;Something is wrong!&quot;</span>
<span class="Identifier">assert</span> <span class="Identifier">res</span><span class="Other">.</span><span class="Identifier">isOk</span> <span class="Operator">==</span> <span class="Identifier">false</span>
<span class="Identifier">assert</span> <span class="Identifier">res</span><span class="Other">.</span><span class="Identifier">error</span> <span class="Operator">==</span> <span class="StringLit">&quot;Something is wrong!&quot;</span></pre>
</dd>
<a id="fail,typedesc,string"></a>
<dt><pre><span class="Keyword">proc</span> <a href="#fail%2Ctypedesc%2Cstring"><span class="Identifier">fail</span></a><span class="Other">(</span><span class="Identifier">T</span><span class="Other">:</span> <span class="Identifier">typedesc</span><span class="Other">;</span> <span class="Identifier">msg</span><span class="Other">:</span> <span class="Identifier">string</span><span class="Other">)</span><span class="Other">:</span> <a href="op.html#OP"><span class="Identifier">OP</span></a><span class="Other">[</span><span class="Identifier">T</span><span class="Other">]</span></pre></dt>
</dl></div>
<div class="section" id="18">
<h1><a class="toc-backref" href="#18">Templates</a></h1>
<dl class="item">
<a id="fail.t,,string"></a>
<dt><pre><span class="Keyword">template</span> <a href="#fail.t%2C%2Cstring"><span class="Identifier">fail</span></a><span class="Other">[</span><span class="Identifier">T</span><span class="Other">;</span> <span class="Other">]</span><span class="Other">(</span><span class="Identifier">O</span><span class="Other">:</span> <span class="Keyword">type</span> <a href="op.html#OP"><span class="Identifier">OP</span></a><span class="Other">[</span><span class="Identifier">T</span><span class="Other">]</span><span class="Other">;</span> <span class="Identifier">msg</span><span class="Other">:</span> <span class="Identifier">string</span><span class="Other">)</span><span class="Other">:</span> <span class="Identifier">O:type</span></pre></dt>
<dd>
Alias for <a class="reference external" href="#fail,string">fail[T](string)</a>
</dd>
<a id="fail.t,static[string]"></a>
<dt><pre><span class="Keyword">template</span> <a href="#fail.t%2Cstatic%5Bstring%5D"><span class="Identifier">fail</span></a><span class="Other">(</span><span class="Identifier">msg</span><span class="Other">:</span> <span class="Identifier">static</span><span class="Other">[</span><span class="Identifier">string</span><span class="Other">]</span><span class="Other">)</span><span class="Other">:</span> <span class="Identifier">auto</span></pre></dt>
<dd>
</dd>
@@ -229,7 +248,7 @@ Alias for <a class="reference external" href="#fail,string">fail[T](string)</a>
<div class="twelve-columns footer">
<span class="nim-sprite"></span>
<br/>
<small style="color: var(--hint);">Made with Nim. Generated: 2020-07-02 16:37:38 UTC</small>
<small style="color: var(--hint);">Made with Nim. Generated: 2020-07-02 17:57:25 UTC</small>
</div>
</div>
</div>