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</pre><pre class="rust">
<span class="comment">// Copyright 2014-2016 bluss and ndarray developers.</span>
<span class="comment">//</span>
<span class="comment">// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or</span>
<span class="comment">// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license</span>
<span class="comment">// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your</span>
<span class="comment">// option. This file may not be copied, modified, or distributed</span>
<span class="comment">// except according to those terms.</span>
<span class="kw">use</span> <span class="ident">std::fmt</span>;
<span class="kw">use</span> <span class="kw">super</span>::{
<span class="ident">ArrayBase</span>,
<span class="ident">Data</span>,
<span class="ident">Dimension</span>,
<span class="ident">NdProducer</span>,
};
<span class="kw">use</span> <span class="ident">dimension::IntoDimension</span>;
<span class="kw">fn</span> <span class="ident">format_array</span><span class="op"><</span><span class="ident">A</span>, <span class="ident">S</span>, <span class="ident">D</span>, <span class="ident">F</span><span class="op">></span>(<span class="ident">view</span>: <span class="kw-2">&</span><span class="ident">ArrayBase</span><span class="op"><</span><span class="ident">S</span>, <span class="ident">D</span><span class="op">></span>, <span class="ident">f</span>: <span class="kw-2">&</span><span class="kw-2">mut</span> <span class="ident">fmt::Formatter</span>,
<span class="kw-2">mut</span> <span class="ident">format</span>: <span class="ident">F</span>)
<span class="op">-</span><span class="op">></span> <span class="ident">fmt::Result</span>
<span class="kw">where</span> <span class="ident">F</span>: <span class="ident">FnMut</span>(<span class="kw-2">&</span><span class="ident">A</span>, <span class="kw-2">&</span><span class="kw-2">mut</span> <span class="ident">fmt::Formatter</span>) <span class="op">-</span><span class="op">></span> <span class="ident">fmt::Result</span>,
<span class="ident">D</span>: <span class="ident">Dimension</span>,
<span class="ident">S</span>: <span class="ident">Data</span><span class="op"><</span><span class="ident">Elem</span><span class="op">=</span><span class="ident">A</span><span class="op">></span>,
{
<span class="kw">let</span> <span class="ident">ndim</span> <span class="op">=</span> <span class="ident">view</span>.<span class="ident">dim</span>.<span class="ident">slice</span>().<span class="ident">len</span>();
<span class="comment">/* private nowadays
if ndim > 0 && f.width.is_none() {
f.width = Some(4)
}
*/</span>
<span class="comment">// None will be an empty iter.</span>
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">last_index</span> <span class="op">=</span> <span class="kw">match</span> <span class="ident">view</span>.<span class="ident">dim</span>.<span class="ident">first_index</span>() {
<span class="prelude-val">None</span> <span class="op">=</span><span class="op">></span> <span class="ident">view</span>.<span class="ident">dim</span>.<span class="ident">clone</span>(),
<span class="prelude-val">Some</span>(<span class="ident">ix</span>) <span class="op">=</span><span class="op">></span> <span class="ident">ix</span>,
};
<span class="kw">for</span> <span class="kw">_</span> <span class="kw">in</span> <span class="number">0</span>..<span class="ident">ndim</span> {
<span class="macro">try!</span>(<span class="macro">write!</span>(<span class="ident">f</span>, <span class="string">"["</span>));
}
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">first</span> <span class="op">=</span> <span class="bool-val">true</span>;
<span class="comment">// Simply use the indexed iterator, and take the index wraparounds</span>
<span class="comment">// as cues for when to add []'s and how many to add.</span>
<span class="kw">for</span> (<span class="ident">index</span>, <span class="ident">elt</span>) <span class="kw">in</span> <span class="ident">view</span>.<span class="ident">indexed_iter</span>() {
<span class="kw">let</span> <span class="ident">index</span> <span class="op">=</span> <span class="ident">index</span>.<span class="ident">into_dimension</span>();
<span class="kw">let</span> <span class="ident">take_n</span> <span class="op">=</span> <span class="kw">if</span> <span class="ident">ndim</span> <span class="op">=</span><span class="op">=</span> <span class="number">0</span> { <span class="number">1</span> } <span class="kw">else</span> { <span class="ident">ndim</span> <span class="op">-</span> <span class="number">1</span> };
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">update_index</span> <span class="op">=</span> <span class="bool-val">false</span>;
<span class="kw">for</span> (<span class="ident">i</span>, (<span class="ident">a</span>, <span class="ident">b</span>)) <span class="kw">in</span> <span class="ident">index</span>.<span class="ident">slice</span>()
.<span class="ident">iter</span>()
.<span class="ident">take</span>(<span class="ident">take_n</span>)
.<span class="ident">zip</span>(<span class="ident">last_index</span>.<span class="ident">slice</span>().<span class="ident">iter</span>())
.<span class="ident">enumerate</span>() {
<span class="kw">if</span> <span class="ident">a</span> <span class="op">!</span><span class="op">=</span> <span class="ident">b</span> {
<span class="comment">// New row.</span>
<span class="comment">// # of ['s needed</span>
<span class="kw">let</span> <span class="ident">n</span> <span class="op">=</span> <span class="ident">ndim</span> <span class="op">-</span> <span class="ident">i</span> <span class="op">-</span> <span class="number">1</span>;
<span class="kw">for</span> <span class="kw">_</span> <span class="kw">in</span> <span class="number">0</span>..<span class="ident">n</span> {
<span class="macro">try!</span>(<span class="macro">write!</span>(<span class="ident">f</span>, <span class="string">"]"</span>));
}
<span class="macro">try!</span>(<span class="macro">write!</span>(<span class="ident">f</span>, <span class="string">","</span>));
<span class="macro">try!</span>(<span class="macro">write!</span>(<span class="ident">f</span>, <span class="string">"\n"</span>));
<span class="kw">for</span> <span class="kw">_</span> <span class="kw">in</span> <span class="number">0</span>..<span class="ident">ndim</span> <span class="op">-</span> <span class="ident">n</span> {
<span class="macro">try!</span>(<span class="macro">write!</span>(<span class="ident">f</span>, <span class="string">" "</span>));
}
<span class="kw">for</span> <span class="kw">_</span> <span class="kw">in</span> <span class="number">0</span>..<span class="ident">n</span> {
<span class="macro">try!</span>(<span class="macro">write!</span>(<span class="ident">f</span>, <span class="string">"["</span>));
}
<span class="ident">first</span> <span class="op">=</span> <span class="bool-val">true</span>;
<span class="ident">update_index</span> <span class="op">=</span> <span class="bool-val">true</span>;
<span class="kw">break</span>;
}
}
<span class="kw">if</span> <span class="op">!</span><span class="ident">first</span> {
<span class="macro">try!</span>(<span class="macro">write!</span>(<span class="ident">f</span>, <span class="string">", "</span>));
}
<span class="ident">first</span> <span class="op">=</span> <span class="bool-val">false</span>;
<span class="macro">try!</span>(<span class="ident">format</span>(<span class="ident">elt</span>, <span class="ident">f</span>));
<span class="kw">if</span> <span class="ident">update_index</span> {
<span class="ident">last_index</span> <span class="op">=</span> <span class="ident">index</span>;
}
}
<span class="kw">for</span> <span class="kw">_</span> <span class="kw">in</span> <span class="number">0</span>..<span class="ident">ndim</span> {
<span class="macro">try!</span>(<span class="macro">write!</span>(<span class="ident">f</span>, <span class="string">"]"</span>));
}
<span class="prelude-val">Ok</span>(())
}
<span class="comment">// NOTE: We can impl other fmt traits here</span>
<span class="doccomment">/// Format the array using `Display` and apply the formatting parameters used</span>
<span class="doccomment">/// to each element.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// The array is shown in multiline style.</span>
<span class="kw">impl</span><span class="op"><</span><span class="lifetime">'a</span>, <span class="ident">A</span>: <span class="ident">fmt::Display</span>, <span class="ident">S</span>, <span class="ident">D</span>: <span class="ident">Dimension</span><span class="op">></span> <span class="ident">fmt::Display</span> <span class="kw">for</span> <span class="ident">ArrayBase</span><span class="op"><</span><span class="ident">S</span>, <span class="ident">D</span><span class="op">></span>
<span class="kw">where</span> <span class="ident">S</span>: <span class="ident">Data</span><span class="op"><</span><span class="ident">Elem</span><span class="op">=</span><span class="ident">A</span><span class="op">></span>,
{
<span class="kw">fn</span> <span class="ident">fmt</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">f</span>: <span class="kw-2">&</span><span class="kw-2">mut</span> <span class="ident">fmt::Formatter</span>) <span class="op">-</span><span class="op">></span> <span class="ident">fmt::Result</span> {
<span class="ident">format_array</span>(<span class="self">self</span>, <span class="ident">f</span>, <span class="op"><</span><span class="kw">_</span><span class="op">></span><span class="ident">::fmt</span>)
}
}
<span class="doccomment">/// Format the array using `Debug` and apply the formatting parameters used</span>
<span class="doccomment">/// to each element.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// The array is shown in multiline style.</span>
<span class="kw">impl</span><span class="op"><</span><span class="lifetime">'a</span>, <span class="ident">A</span>: <span class="ident">fmt::Debug</span>, <span class="ident">S</span>, <span class="ident">D</span>: <span class="ident">Dimension</span><span class="op">></span> <span class="ident">fmt::Debug</span> <span class="kw">for</span> <span class="ident">ArrayBase</span><span class="op"><</span><span class="ident">S</span>, <span class="ident">D</span><span class="op">></span>
<span class="kw">where</span> <span class="ident">S</span>: <span class="ident">Data</span><span class="op"><</span><span class="ident">Elem</span><span class="op">=</span><span class="ident">A</span><span class="op">></span>,
{
<span class="kw">fn</span> <span class="ident">fmt</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">f</span>: <span class="kw-2">&</span><span class="kw-2">mut</span> <span class="ident">fmt::Formatter</span>) <span class="op">-</span><span class="op">></span> <span class="ident">fmt::Result</span> {
<span class="comment">// Add extra information for Debug</span>
<span class="macro">try!</span>(<span class="ident">format_array</span>(<span class="self">self</span>, <span class="ident">f</span>, <span class="op"><</span><span class="kw">_</span><span class="op">></span><span class="ident">::fmt</span>));
<span class="macro">try!</span>(<span class="macro">write!</span>(<span class="ident">f</span>, <span class="string">" shape={:?}, strides={:?}, layout={:?}"</span>,
<span class="self">self</span>.<span class="ident">shape</span>(), <span class="self">self</span>.<span class="ident">strides</span>(), <span class="ident">layout</span><span class="op">=</span><span class="self">self</span>.<span class="ident">view</span>().<span class="ident">layout</span>()));
<span class="prelude-val">Ok</span>(())
}
}
<span class="doccomment">/// Format the array using `LowerExp` and apply the formatting parameters used</span>
<span class="doccomment">/// to each element.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// The array is shown in multiline style.</span>
<span class="kw">impl</span><span class="op"><</span><span class="lifetime">'a</span>, <span class="ident">A</span>: <span class="ident">fmt::LowerExp</span>, <span class="ident">S</span>, <span class="ident">D</span>: <span class="ident">Dimension</span><span class="op">></span> <span class="ident">fmt::LowerExp</span> <span class="kw">for</span> <span class="ident">ArrayBase</span><span class="op"><</span><span class="ident">S</span>, <span class="ident">D</span><span class="op">></span>
<span class="kw">where</span> <span class="ident">S</span>: <span class="ident">Data</span><span class="op"><</span><span class="ident">Elem</span><span class="op">=</span><span class="ident">A</span><span class="op">></span>,
{
<span class="kw">fn</span> <span class="ident">fmt</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">f</span>: <span class="kw-2">&</span><span class="kw-2">mut</span> <span class="ident">fmt::Formatter</span>) <span class="op">-</span><span class="op">></span> <span class="ident">fmt::Result</span> {
<span class="ident">format_array</span>(<span class="self">self</span>, <span class="ident">f</span>, <span class="op"><</span><span class="kw">_</span><span class="op">></span><span class="ident">::fmt</span>)
}
}
<span class="doccomment">/// Format the array using `UpperExp` and apply the formatting parameters used</span>
<span class="doccomment">/// to each element.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// The array is shown in multiline style.</span>
<span class="kw">impl</span><span class="op"><</span><span class="lifetime">'a</span>, <span class="ident">A</span>: <span class="ident">fmt::UpperExp</span>, <span class="ident">S</span>, <span class="ident">D</span>: <span class="ident">Dimension</span><span class="op">></span> <span class="ident">fmt::UpperExp</span> <span class="kw">for</span> <span class="ident">ArrayBase</span><span class="op"><</span><span class="ident">S</span>, <span class="ident">D</span><span class="op">></span>
<span class="kw">where</span> <span class="ident">S</span>: <span class="ident">Data</span><span class="op"><</span><span class="ident">Elem</span><span class="op">=</span><span class="ident">A</span><span class="op">></span>,
{
<span class="kw">fn</span> <span class="ident">fmt</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">f</span>: <span class="kw-2">&</span><span class="kw-2">mut</span> <span class="ident">fmt::Formatter</span>) <span class="op">-</span><span class="op">></span> <span class="ident">fmt::Result</span> {
<span class="ident">format_array</span>(<span class="self">self</span>, <span class="ident">f</span>, <span class="op"><</span><span class="kw">_</span><span class="op">></span><span class="ident">::fmt</span>)
}
}
<span class="doccomment">/// Format the array using `LowerHex` and apply the formatting parameters used</span>
<span class="doccomment">/// to each element.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// The array is shown in multiline style.</span>
<span class="kw">impl</span><span class="op"><</span><span class="lifetime">'a</span>, <span class="ident">A</span>: <span class="ident">fmt::LowerHex</span>, <span class="ident">S</span>, <span class="ident">D</span>: <span class="ident">Dimension</span><span class="op">></span> <span class="ident">fmt::LowerHex</span> <span class="kw">for</span> <span class="ident">ArrayBase</span><span class="op"><</span><span class="ident">S</span>, <span class="ident">D</span><span class="op">></span>
<span class="kw">where</span> <span class="ident">S</span>: <span class="ident">Data</span><span class="op"><</span><span class="ident">Elem</span><span class="op">=</span><span class="ident">A</span><span class="op">></span>,
{
<span class="kw">fn</span> <span class="ident">fmt</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">f</span>: <span class="kw-2">&</span><span class="kw-2">mut</span> <span class="ident">fmt::Formatter</span>) <span class="op">-</span><span class="op">></span> <span class="ident">fmt::Result</span> {
<span class="ident">format_array</span>(<span class="self">self</span>, <span class="ident">f</span>, <span class="op"><</span><span class="kw">_</span><span class="op">></span><span class="ident">::fmt</span>)
}
}
<span class="doccomment">/// Format the array using `Binary` and apply the formatting parameters used</span>
<span class="doccomment">/// to each element.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// The array is shown in multiline style.</span>
<span class="kw">impl</span><span class="op"><</span><span class="lifetime">'a</span>, <span class="ident">A</span>: <span class="ident">fmt::Binary</span>, <span class="ident">S</span>, <span class="ident">D</span>: <span class="ident">Dimension</span><span class="op">></span> <span class="ident">fmt::Binary</span> <span class="kw">for</span> <span class="ident">ArrayBase</span><span class="op"><</span><span class="ident">S</span>, <span class="ident">D</span><span class="op">></span>
<span class="kw">where</span> <span class="ident">S</span>: <span class="ident">Data</span><span class="op"><</span><span class="ident">Elem</span><span class="op">=</span><span class="ident">A</span><span class="op">></span>,
{
<span class="kw">fn</span> <span class="ident">fmt</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">f</span>: <span class="kw-2">&</span><span class="kw-2">mut</span> <span class="ident">fmt::Formatter</span>) <span class="op">-</span><span class="op">></span> <span class="ident">fmt::Result</span> {
<span class="ident">format_array</span>(<span class="self">self</span>, <span class="ident">f</span>, <span class="op"><</span><span class="kw">_</span><span class="op">></span><span class="ident">::fmt</span>)
}
}
</pre></div>
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