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</pre><pre class="rust ">
<span class="comment">/*
Copyright 2017 LambdaStack All rights reserved.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/</span>
<span class="comment">/*
Portions borrowed from the rusoto project. See README.md
*/</span>
<span class="kw">use</span> <span class="ident">aws</span>::<span class="ident">common</span>::<span class="ident">xmlutil</span>::{<span class="ident">XmlParseError</span>, <span class="ident">Peek</span>, <span class="ident">Next</span>};
<span class="kw">use</span> <span class="ident">aws</span>::<span class="ident">common</span>::<span class="ident">xmlutil</span>::{<span class="ident">characters</span>, <span class="ident">start_element</span>, <span class="ident">end_element</span>, <span class="ident">string_field</span>, <span class="ident">peek_at_name</span>};
<span class="kw">use</span> <span class="ident">aws</span>::<span class="ident">common</span>::<span class="ident">params</span>::{<span class="ident">Params</span>, <span class="ident">ServiceParams</span>};
<span class="attribute">#[<span class="ident">derive</span>(<span class="ident">Default</span>, <span class="ident">Debug</span>)]</span>
<span class="kw">pub</span> <span class="kw">struct</span> <span class="ident">XmlError</span> {
<span class="kw">pub</span> <span class="ident">error_type</span>: <span class="ident">String</span>,
<span class="kw">pub</span> <span class="ident">code</span>: <span class="ident">String</span>,
<span class="kw">pub</span> <span class="ident">message</span>: <span class="ident">String</span>,
<span class="kw">pub</span> <span class="ident">detail</span>: <span class="prelude-ty">Option</span><span class="op"><</span><span class="ident">String</span><span class="op">></span>
}
<span class="kw">pub</span> <span class="kw">struct</span> <span class="ident">XmlErrorDeserializer</span>;
<span class="kw">impl</span> <span class="ident">XmlErrorDeserializer</span> {
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">deserialize</span><span class="op"><</span><span class="lifetime">'a</span>, <span class="ident">T</span>: <span class="ident">Peek</span> <span class="op">+</span> <span class="ident">Next</span><span class="op">></span>(<span class="ident">tag_name</span>: <span class="kw-2">&</span><span class="ident">str</span>, <span class="ident">stack</span>: <span class="kw-2">&</span><span class="kw-2">mut</span> <span class="ident">T</span>) <span class="op">-></span> <span class="prelude-ty">Result</span><span class="op"><</span><span class="ident">XmlError</span>, <span class="ident">XmlParseError</span><span class="op">></span> {
<span class="macro">try</span><span class="macro">!</span>(<span class="ident">start_element</span>(<span class="ident">tag_name</span>, <span class="ident">stack</span>));
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">obj</span> <span class="op">=</span> <span class="ident">XmlError</span>::<span class="ident">default</span>();
<span class="kw">loop</span> {
<span class="kw">match</span> <span class="kw-2">&</span><span class="macro">try</span><span class="macro">!</span>(<span class="ident">peek_at_name</span>(<span class="ident">stack</span>))[..] {
<span class="string">"Type"</span> <span class="op">=></span> {
<span class="ident">obj</span>.<span class="ident">error_type</span> <span class="op">=</span> <span class="macro">try</span><span class="macro">!</span>(<span class="ident">string_field</span>(<span class="string">"Type"</span>, <span class="ident">stack</span>));
<span class="kw">continue</span>;
},
<span class="string">"Code"</span> <span class="op">=></span> {
<span class="ident">obj</span>.<span class="ident">code</span> <span class="op">=</span> <span class="macro">try</span><span class="macro">!</span>(<span class="ident">string_field</span>(<span class="string">"Code"</span>, <span class="ident">stack</span>));
<span class="kw">continue</span>;
},
<span class="string">"Message"</span> <span class="op">=></span> {
<span class="ident">obj</span>.<span class="ident">message</span> <span class="op">=</span> <span class="macro">try</span><span class="macro">!</span>(<span class="ident">string_field</span>(<span class="string">"Message"</span>, <span class="ident">stack</span>));
<span class="kw">continue</span>;
},
<span class="string">"Detail"</span> <span class="op">=></span> {
<span class="macro">try</span><span class="macro">!</span>(<span class="ident">start_element</span>(<span class="string">"Detail"</span>, <span class="ident">stack</span>));
<span class="kw">if</span> <span class="kw">let</span> <span class="prelude-val">Ok</span>(<span class="ident">characters</span>) <span class="op">=</span> <span class="ident">characters</span>(<span class="ident">stack</span>){
<span class="ident">obj</span>.<span class="ident">detail</span> <span class="op">=</span> <span class="prelude-val">Some</span>(<span class="ident">characters</span>.<span class="ident">to_string</span>());
<span class="macro">try</span><span class="macro">!</span>(<span class="ident">end_element</span>(<span class="string">"Detail"</span>, <span class="ident">stack</span>));
}
<span class="kw">continue</span>;
},
_ <span class="op">=></span> <span class="kw">break</span>
}
}
<span class="macro">try</span><span class="macro">!</span>(<span class="ident">end_element</span>(<span class="ident">tag_name</span>, <span class="ident">stack</span>));
<span class="prelude-val">Ok</span>(<span class="ident">obj</span>)
}
}
<span class="kw">pub</span> <span class="kw">type</span> <span class="ident">Errors</span> <span class="op">=</span> <span class="ident">Vec</span><span class="op"><</span><span class="ident">String</span><span class="op">></span>;
<span class="doccomment">/// Parse `Errors` from XML</span>
<span class="attribute">#[<span class="ident">allow</span>(<span class="ident">dead_code</span>)]</span>
<span class="kw">struct</span> <span class="ident">ErrorsParser</span>;
<span class="kw">impl</span> <span class="ident">ErrorsParser</span> {
<span class="attribute">#[<span class="ident">allow</span>(<span class="ident">dead_code</span>)]</span>
<span class="attribute">#[<span class="ident">allow</span>(<span class="ident">unused_variables</span>)]</span>
<span class="kw">fn</span> <span class="ident">parse_xml</span><span class="op"><</span><span class="ident">T</span>: <span class="ident">Peek</span> <span class="op">+</span> <span class="ident">Next</span><span class="op">></span>(<span class="ident">tag_name</span>: <span class="kw-2">&</span><span class="ident">str</span>, <span class="ident">stack</span>: <span class="kw-2">&</span><span class="kw-2">mut</span> <span class="ident">T</span>) <span class="op">-></span> <span class="prelude-ty">Result</span><span class="op"><</span><span class="ident">Errors</span>, <span class="ident">XmlParseError</span><span class="op">></span> {
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">obj</span> : <span class="ident">Vec</span><span class="op"><</span><span class="ident">String</span><span class="op">></span> <span class="op">=</span> <span class="ident">Vec</span>::<span class="ident">new</span>();
<span class="kw">while</span> <span class="macro">try</span><span class="macro">!</span>(<span class="ident">peek_at_name</span>(<span class="ident">stack</span>)) <span class="op">==</span> <span class="string">"Error"</span> {
<span class="ident">obj</span>.<span class="ident">push</span>(<span class="macro">try</span><span class="macro">!</span>(<span class="ident">ErrorsParser</span>::<span class="ident">parse_single_error</span>(<span class="ident">stack</span>)));
}
<span class="prelude-val">Ok</span>(<span class="ident">obj</span>)
}
<span class="kw">fn</span> <span class="ident">parse_single_error</span><span class="op"><</span><span class="ident">T</span>: <span class="ident">Peek</span> <span class="op">+</span> <span class="ident">Next</span><span class="op">></span>(<span class="ident">stack</span>: <span class="kw-2">&</span><span class="kw-2">mut</span> <span class="ident">T</span>) <span class="op">-></span> <span class="prelude-ty">Result</span><span class="op"><</span><span class="ident">String</span>, <span class="ident">XmlParseError</span><span class="op">></span> {
<span class="comment">// TODO: go back to try!</span>
<span class="kw">match</span> <span class="ident">characters</span>(<span class="ident">stack</span>) {
<span class="prelude-val">Err</span>(<span class="ident">why</span>) <span class="op">=></span> <span class="prelude-val">Err</span>(<span class="ident">why</span>),
<span class="prelude-val">Ok</span>(<span class="ident">val</span>) <span class="op">=></span> <span class="prelude-val">Ok</span>(<span class="ident">val</span>),
}
}
}
<span class="doccomment">/// Write `Errors` contents to a `SignedRequest`</span>
<span class="attribute">#[<span class="ident">allow</span>(<span class="ident">dead_code</span>)]</span>
<span class="kw">struct</span> <span class="ident">ErrorsWriter</span>;
<span class="kw">impl</span> <span class="ident">ErrorsWriter</span> {
<span class="attribute">#[<span class="ident">allow</span>(<span class="ident">dead_code</span>)]</span>
<span class="kw">fn</span> <span class="ident">write_params</span>(<span class="ident">params</span>: <span class="kw-2">&</span><span class="kw-2">mut</span> <span class="ident">Params</span>, <span class="ident">name</span>: <span class="kw-2">&</span><span class="ident">str</span>, <span class="ident">obj</span>: <span class="kw-2">&</span><span class="ident">Errors</span>) {
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">index</span> <span class="op">=</span> <span class="number">1</span>;
<span class="kw">for</span> <span class="ident">element</span> <span class="kw">in</span> <span class="ident">obj</span>.<span class="ident">iter</span>() {
<span class="kw">let</span> <span class="ident">key</span> <span class="op">=</span> <span class="kw-2">&</span><span class="macro">format</span><span class="macro">!</span>(<span class="string">"{}.{}"</span>, <span class="ident">name</span>, <span class="ident">index</span>);
<span class="ident">ErrorsWriter</span>::<span class="ident">write_param</span>(<span class="ident">params</span>, <span class="ident">key</span>, <span class="ident">element</span>);
<span class="ident">index</span> <span class="op">+=</span> <span class="number">1</span>;
}
}
<span class="attribute">#[<span class="ident">allow</span>(<span class="ident">dead_code</span>)]</span>
<span class="kw">fn</span> <span class="ident">write_param</span>(<span class="ident">params</span>: <span class="kw-2">&</span><span class="kw-2">mut</span> <span class="ident">Params</span>, <span class="ident">key</span>: <span class="kw-2">&</span><span class="ident">str</span>, <span class="ident">value</span>: <span class="kw-2">&</span><span class="ident">str</span>) {
<span class="ident">params</span>.<span class="ident">put</span>(<span class="ident">key</span>, <span class="ident">value</span>);
}
}
</pre>
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