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<codeline lineno="2"><highlight class="normal"></highlight></codeline>
<codeline lineno="3"><highlight class="normal"></highlight><highlight class="preprocessor">#include<sp/>&lt;array&gt;</highlight><highlight class="normal"></highlight></codeline>
<codeline lineno="4"><highlight class="normal"></highlight><highlight class="preprocessor">#include<sp/>&lt;concepts&gt;</highlight><highlight class="normal"></highlight></codeline>
<codeline lineno="5"><highlight class="normal"></highlight><highlight class="preprocessor">#include<sp/>&lt;cstddef&gt;</highlight><highlight class="normal"></highlight></codeline>
<codeline lineno="6"><highlight class="normal"></highlight><highlight class="preprocessor">#include<sp/>&lt;exception&gt;</highlight><highlight class="normal"></highlight></codeline>
<codeline lineno="7"><highlight class="normal"></highlight><highlight class="preprocessor">#include<sp/>&lt;functional&gt;</highlight><highlight class="normal"></highlight></codeline>
<codeline lineno="8"><highlight class="normal"></highlight><highlight class="preprocessor">#include<sp/>&lt;tuple&gt;</highlight><highlight class="normal"></highlight></codeline>
<codeline lineno="9"><highlight class="normal"></highlight><highlight class="preprocessor">#include<sp/>&lt;type_traits&gt;</highlight><highlight class="normal"></highlight></codeline>
<codeline lineno="10"><highlight class="normal"></highlight><highlight class="preprocessor">#include<sp/>&lt;utility&gt;</highlight><highlight class="normal"></highlight></codeline>
<codeline lineno="11"><highlight class="normal"></highlight><highlight class="preprocessor">#include<sp/>&lt;format&gt;</highlight><highlight class="normal"></highlight></codeline>
<codeline lineno="12"><highlight class="normal"></highlight><highlight class="preprocessor">#include<sp/>&lt;string_view&gt;</highlight><highlight class="normal"></highlight></codeline>
<codeline lineno="13"><highlight class="normal"></highlight></codeline>
<codeline lineno="14"><highlight class="normal"></highlight><highlight class="preprocessor">#include<sp/>&quot;<ref refid="utils_2dependencies_2detail_2schema_8hpp" kindref="compound">serif/utils/dependencies/detail/schema.hpp</ref>&quot;</highlight><highlight class="normal"></highlight></codeline>
<codeline lineno="15"><highlight class="normal"></highlight></codeline>
<codeline lineno="16"><highlight class="normal"></highlight><highlight class="keyword">namespace<sp/></highlight><highlight class="normal"><ref refid="namespaceserif_1_1utils_1_1dependencies" kindref="compound">serif::utils::dependencies</ref><sp/>{</highlight></codeline>
<codeline lineno="18"><highlight class="normal"><sp/><sp/><sp/><sp/></highlight><highlight class="keyword">enum<sp/>class</highlight><highlight class="normal"><sp/><ref refid="namespaceserif_1_1utils_1_1dependencies_1af2f6dab3a0204175602c7fc2348344f7" kindref="member">NodeOutcome</ref><sp/>{</highlight></codeline>
<codeline lineno="19"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><ref refid="namespaceserif_1_1utils_1_1dependencies_1af2f6dab3a0204175602c7fc2348344f7aaa8fb77e57d1ca18d593e909729871fe" kindref="member">completed</ref>,</highlight></codeline>
<codeline lineno="20"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><ref refid="namespaceserif_1_1utils_1_1dependencies_1af2f6dab3a0204175602c7fc2348344f7ac7537d6d48ecf261749c09a9f284bd45" kindref="member">rejected</ref>,</highlight></codeline>
<codeline lineno="21"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><ref refid="namespaceserif_1_1utils_1_1dependencies_1af2f6dab3a0204175602c7fc2348344f7a42552b1f133f9f8eb406d4f306ea9fd1" kindref="member">exception</ref></highlight></codeline>
<codeline lineno="22"><highlight class="normal"><sp/><sp/><sp/><sp/>};</highlight></codeline>
<codeline lineno="23"><highlight class="normal"></highlight></codeline>
<codeline lineno="25"><highlight class="normal"><sp/><sp/><sp/><sp/></highlight><highlight class="keyword">template</highlight><highlight class="normal"><sp/>&lt;</highlight><highlight class="keyword">typename</highlight><highlight class="normal"><sp/>BeforeT,<sp/></highlight><highlight class="keyword">typename</highlight><highlight class="normal"><sp/>AfterT&gt;</highlight></codeline>
<codeline lineno="26" refid="conceptserif_1_1utils_1_1dependencies_1_1_node_observer_callbacks" refkind="compound"><highlight class="normal"><sp/><sp/><sp/><sp/></highlight><highlight class="keyword">concept<sp/></highlight><highlight class="normal"><ref refid="conceptserif_1_1utils_1_1dependencies_1_1_node_observer_callbacks" kindref="compound">NodeObserverCallbacks</ref><sp/>=<sp/>std::invocable&lt;BeforeT&amp;&gt;<sp/>&amp;&amp;</highlight></codeline>
<codeline lineno="27"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/>std::is_object_v&lt;std::invoke_result_t&lt;BeforeT&amp;&gt;&gt;<sp/>&amp;&amp;<sp/>std::move_constructible&lt;std::invoke_result_t&lt;BeforeT&amp;&gt;&gt;<sp/>&amp;&amp;</highlight></codeline>
<codeline lineno="28"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/></highlight><highlight class="keyword">requires</highlight><highlight class="normal">(AfterT&amp;<sp/>after,<sp/>std::invoke_result_t&lt;BeforeT&amp;&gt;&amp;<sp/>state,<sp/><ref refid="namespaceserif_1_1utils_1_1dependencies_1af2f6dab3a0204175602c7fc2348344f7" kindref="member">NodeOutcome</ref><sp/>outcome)<sp/>{</highlight></codeline>
<codeline lineno="29"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/>{<sp/>std::invoke(after,<sp/>state,<sp/>outcome)<sp/>}<sp/></highlight><highlight class="keyword">noexcept</highlight><highlight class="normal"><sp/>-&gt;<sp/>std::same_as&lt;void&gt;;</highlight></codeline>
<codeline lineno="30"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/>};</highlight></codeline>
<codeline lineno="31"><highlight class="normal"></highlight></codeline>
<codeline lineno="32"><highlight class="normal"><sp/><sp/><sp/><sp/></highlight><highlight class="keyword">template</highlight><highlight class="normal"><sp/>&lt;</highlight><highlight class="keyword">typename</highlight><highlight class="normal"><sp/>KeyT,<sp/></highlight><highlight class="keyword">typename</highlight><highlight class="normal"><sp/>BeforeT,<sp/></highlight><highlight class="keyword">typename</highlight><highlight class="normal"><sp/>AfterT&gt;<sp/></highlight><highlight class="keyword">requires</highlight><highlight class="normal"><sp/><ref refid="conceptserif_1_1utils_1_1dependencies_1_1_node_observer_callbacks" kindref="compound">NodeObserverCallbacks&lt;BeforeT, AfterT&gt;</ref></highlight></codeline>
<codeline lineno="33" refid="structserif_1_1utils_1_1dependencies_1_1_node_observer" refkind="compound"><highlight class="normal"><sp/><sp/><sp/><sp/></highlight><highlight class="keyword">struct<sp/></highlight><highlight class="normal"><ref refid="structserif_1_1utils_1_1dependencies_1_1_node_observer" kindref="compound">NodeObserver</ref><sp/>{</highlight></codeline>
<codeline lineno="34"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/>BeforeT<sp/><ref refid="structserif_1_1utils_1_1dependencies_1_1_node_observer_1acf724e2009c9c55956c3668de32f3b5d" kindref="member">before</ref>;</highlight></codeline>
<codeline lineno="35"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/>AfterT<sp/><ref refid="structserif_1_1utils_1_1dependencies_1_1_node_observer_1a3336900cd300302c7a45002991aa8799" kindref="member">after</ref>;</highlight></codeline>
<codeline lineno="36"><highlight class="normal"><sp/><sp/><sp/><sp/>};</highlight></codeline>
<codeline lineno="37"><highlight class="normal"></highlight></codeline>
<codeline lineno="39"><highlight class="normal"><sp/><sp/><sp/><sp/></highlight><highlight class="keyword">template</highlight><highlight class="normal"><sp/>&lt;</highlight><highlight class="keyword">typename</highlight><highlight class="normal"><sp/>BeforeT,<sp/></highlight><highlight class="keyword">typename</highlight><highlight class="normal"><sp/>AfterT,<sp/></highlight><highlight class="keyword">typename</highlight><highlight class="normal"><sp/>KeyT&gt;</highlight></codeline>
<codeline lineno="40" refid="conceptserif_1_1utils_1_1dependencies_1_1_keyed_node_observer_callbacks" refkind="compound"><highlight class="normal"><sp/><sp/><sp/><sp/></highlight><highlight class="keyword">concept<sp/></highlight><highlight class="normal"><ref refid="conceptserif_1_1utils_1_1dependencies_1_1_keyed_node_observer_callbacks" kindref="compound">KeyedNodeObserverCallbacks</ref><sp/>=<sp/>std::invocable&lt;BeforeT&amp;,<sp/>std::type_identity&lt;KeyT&gt;&gt;<sp/>&amp;&amp;</highlight></codeline>
<codeline lineno="41"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/>std::is_object_v&lt;std::invoke_result_t&lt;BeforeT&amp;,<sp/>std::type_identity&lt;KeyT&gt;&gt;&gt;<sp/>&amp;&amp;</highlight></codeline>
<codeline lineno="42"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/>std::move_constructible&lt;std::invoke_result_t&lt;BeforeT&amp;,<sp/>std::type_identity&lt;KeyT&gt;&gt;&gt;<sp/>&amp;&amp;</highlight></codeline>
<codeline lineno="43"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/></highlight><highlight class="keyword">requires</highlight><highlight class="normal">(AfterT&amp;<sp/>after,<sp/>std::invoke_result_t&lt;BeforeT&amp;,<sp/>std::type_identity&lt;KeyT&gt;&gt;&amp;<sp/>state,<sp/><ref refid="namespaceserif_1_1utils_1_1dependencies_1af2f6dab3a0204175602c7fc2348344f7" kindref="member">NodeOutcome</ref><sp/>outcome)<sp/>{</highlight></codeline>
<codeline lineno="44"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/>{<sp/>std::invoke(after,<sp/>state,<sp/>outcome)<sp/>}<sp/></highlight><highlight class="keyword">noexcept</highlight><highlight class="normal"><sp/>-&gt;<sp/>std::same_as&lt;void&gt;;</highlight></codeline>
<codeline lineno="45"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/>};</highlight></codeline>
<codeline lineno="46"><highlight class="normal"></highlight></codeline>
<codeline lineno="48"><highlight class="normal"><sp/><sp/><sp/><sp/></highlight><highlight class="keyword">template</highlight><highlight class="normal"><sp/>&lt;</highlight><highlight class="keyword">typename</highlight><highlight class="normal"><sp/>BeforeT,<sp/></highlight><highlight class="keyword">typename</highlight><highlight class="normal"><sp/>AfterT&gt;</highlight></codeline>
<codeline lineno="49" refid="structserif_1_1utils_1_1dependencies_1_1_all_nodes_observer" refkind="compound"><highlight class="normal"><sp/><sp/><sp/><sp/></highlight><highlight class="keyword">struct<sp/></highlight><highlight class="normal"><ref refid="structserif_1_1utils_1_1dependencies_1_1_all_nodes_observer" kindref="compound">AllNodesObserver</ref><sp/>{</highlight></codeline>
<codeline lineno="50"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/>BeforeT<sp/><ref refid="structserif_1_1utils_1_1dependencies_1_1_all_nodes_observer_1aecd5cde8bbc5dd54ab20aeba850c5878" kindref="member">before</ref>;</highlight></codeline>
<codeline lineno="51"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/>AfterT<sp/><ref refid="structserif_1_1utils_1_1dependencies_1_1_all_nodes_observer_1ad1f596d55b60886888945c2873bd8c3e" kindref="member">after</ref>;</highlight></codeline>
<codeline lineno="52"><highlight class="normal"><sp/><sp/><sp/><sp/>};</highlight></codeline>
<codeline lineno="53"><highlight class="normal"></highlight></codeline>
<codeline lineno="54"><highlight class="normal"><sp/><sp/><sp/><sp/></highlight><highlight class="keyword">template</highlight><highlight class="normal"><sp/>&lt;</highlight><highlight class="keyword">typename</highlight><highlight class="normal"><sp/>InputT,<sp/></highlight><highlight class="keyword">typename</highlight><highlight class="normal"><sp/>ConsumerT,<sp/></highlight><highlight class="keyword">typename</highlight><highlight class="normal"><sp/>FunctionT&gt;</highlight></codeline>
<codeline lineno="55" refid="structserif_1_1utils_1_1dependencies_1_1_edge_observer" refkind="compound"><highlight class="normal"><sp/><sp/><sp/><sp/></highlight><highlight class="keyword">struct<sp/></highlight><highlight class="normal"><ref refid="structserif_1_1utils_1_1dependencies_1_1_edge_observer" kindref="compound">EdgeObserver</ref><sp/>{</highlight></codeline>
<codeline lineno="56"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/>FunctionT<sp/><ref refid="structserif_1_1utils_1_1dependencies_1_1_edge_observer_1aaacd632e5bd32a8d89f1ca2305f6410c" kindref="member">function</ref>;</highlight></codeline>
<codeline lineno="57"><highlight class="normal"><sp/><sp/><sp/><sp/>};</highlight></codeline>
<codeline lineno="58"><highlight class="normal"></highlight></codeline>
<codeline lineno="59"><highlight class="normal"><sp/><sp/><sp/><sp/></highlight><highlight class="keyword">namespace<sp/></highlight><highlight class="normal"><ref refid="namespaceserif_1_1utils_1_1dependencies_1_1detail" kindref="compound">detail</ref><sp/>{</highlight></codeline>
<codeline lineno="60"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/></highlight><highlight class="keyword">template</highlight><highlight class="normal"><sp/>&lt;</highlight><highlight class="keyword">typename</highlight><highlight class="normal"><sp/>T&gt;</highlight></codeline>
<codeline lineno="61"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/></highlight><highlight class="keyword">inline</highlight><highlight class="normal"><sp/></highlight><highlight class="keyword">constexpr</highlight><highlight class="normal"><sp/></highlight><highlight class="keywordtype">bool</highlight><highlight class="normal"><sp/><ref refid="namespaceserif_1_1utils_1_1dependencies_1_1detail_1a54c9a0f2354c9edeef7db65bee38b1fe" kindref="member">is_observer_v</ref><sp/>=<sp/></highlight><highlight class="keyword">false</highlight><highlight class="normal">;</highlight></codeline>
<codeline lineno="62"><highlight class="normal"></highlight></codeline>
<codeline lineno="63"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/></highlight><highlight class="keyword">template</highlight><highlight class="normal"><sp/>&lt;</highlight><highlight class="keyword">typename</highlight><highlight class="normal"><sp/>KeyT,<sp/></highlight><highlight class="keyword">typename</highlight><highlight class="normal"><sp/>BeforeT,<sp/></highlight><highlight class="keyword">typename</highlight><highlight class="normal"><sp/>AfterT&gt;</highlight></codeline>
<codeline lineno="64"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/></highlight><highlight class="keyword">inline</highlight><highlight class="normal"><sp/></highlight><highlight class="keyword">constexpr</highlight><highlight class="normal"><sp/></highlight><highlight class="keywordtype">bool</highlight><highlight class="normal"><sp/><ref refid="namespaceserif_1_1utils_1_1dependencies_1_1detail_1a54c9a0f2354c9edeef7db65bee38b1fe" kindref="member">is_observer_v&lt;NodeObserver&lt;KeyT, BeforeT, AfterT&gt;</ref>&gt;<sp/>=<sp/></highlight><highlight class="keyword">true</highlight><highlight class="normal">;</highlight></codeline>
<codeline lineno="65"><highlight class="normal"></highlight></codeline>
<codeline lineno="66"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/></highlight><highlight class="keyword">template</highlight><highlight class="normal"><sp/>&lt;</highlight><highlight class="keyword">typename</highlight><highlight class="normal"><sp/>BeforeT,<sp/></highlight><highlight class="keyword">typename</highlight><highlight class="normal"><sp/>AfterT&gt;</highlight></codeline>
<codeline lineno="67"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/></highlight><highlight class="keyword">inline</highlight><highlight class="normal"><sp/></highlight><highlight class="keyword">constexpr</highlight><highlight class="normal"><sp/></highlight><highlight class="keywordtype">bool</highlight><highlight class="normal"><sp/><ref refid="namespaceserif_1_1utils_1_1dependencies_1_1detail_1a54c9a0f2354c9edeef7db65bee38b1fe" kindref="member">is_observer_v&lt;AllNodesObserver&lt;BeforeT, AfterT&gt;</ref>&gt;<sp/>=<sp/></highlight><highlight class="keyword">true</highlight><highlight class="normal">;</highlight></codeline>
<codeline lineno="68"><highlight class="normal"></highlight></codeline>
<codeline lineno="69"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/></highlight><highlight class="keyword">template</highlight><highlight class="normal"><sp/>&lt;</highlight><highlight class="keyword">typename</highlight><highlight class="normal"><sp/>InputT,<sp/></highlight><highlight class="keyword">typename</highlight><highlight class="normal"><sp/>ConsumerT,<sp/></highlight><highlight class="keyword">typename</highlight><highlight class="normal"><sp/>FunctionT&gt;</highlight></codeline>
<codeline lineno="70"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/></highlight><highlight class="keyword">inline</highlight><highlight class="normal"><sp/></highlight><highlight class="keyword">constexpr</highlight><highlight class="normal"><sp/></highlight><highlight class="keywordtype">bool</highlight><highlight class="normal"><sp/><ref refid="namespaceserif_1_1utils_1_1dependencies_1_1detail_1a54c9a0f2354c9edeef7db65bee38b1fe" kindref="member">is_observer_v&lt;EdgeObserver&lt;InputT, ConsumerT, FunctionT&gt;</ref>&gt;<sp/>=<sp/></highlight><highlight class="keyword">true</highlight><highlight class="normal">;</highlight></codeline>
<codeline lineno="71"><highlight class="normal"></highlight></codeline>
<codeline lineno="72"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/></highlight><highlight class="keyword">template</highlight><highlight class="normal"><sp/>&lt;</highlight><highlight class="keyword">typename</highlight><highlight class="normal"><sp/>ObserverT,<sp/></highlight><highlight class="keyword">typename</highlight><highlight class="normal"><sp/>KeyT&gt;</highlight></codeline>
<codeline lineno="73"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/></highlight><highlight class="keyword">inline</highlight><highlight class="normal"><sp/></highlight><highlight class="keyword">constexpr</highlight><highlight class="normal"><sp/></highlight><highlight class="keywordtype">bool</highlight><highlight class="normal"><sp/><ref refid="namespaceserif_1_1utils_1_1dependencies_1_1detail_1af24e48ad85f3dcae7f944b475e13bed6" kindref="member">observes_node_v</ref><sp/>=<sp/></highlight><highlight class="keyword">false</highlight><highlight class="normal">;</highlight></codeline>
<codeline lineno="74"><highlight class="normal"></highlight></codeline>
<codeline lineno="75"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/></highlight><highlight class="keyword">template</highlight><highlight class="normal"><sp/>&lt;</highlight><highlight class="keyword">typename</highlight><highlight class="normal"><sp/>KeyT,<sp/></highlight><highlight class="keyword">typename</highlight><highlight class="normal"><sp/>BeforeT,<sp/></highlight><highlight class="keyword">typename</highlight><highlight class="normal"><sp/>AfterT&gt;</highlight></codeline>
<codeline lineno="76"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/></highlight><highlight class="keyword">inline</highlight><highlight class="normal"><sp/></highlight><highlight class="keyword">constexpr</highlight><highlight class="normal"><sp/></highlight><highlight class="keywordtype">bool</highlight><highlight class="normal"><sp/><ref refid="namespaceserif_1_1utils_1_1dependencies_1_1detail_1af24e48ad85f3dcae7f944b475e13bed6" kindref="member">observes_node_v&lt;NodeObserver&lt;KeyT, BeforeT, AfterT&gt;</ref>,<sp/>KeyT&gt;<sp/>=<sp/></highlight><highlight class="keyword">true</highlight><highlight class="normal">;</highlight></codeline>
<codeline lineno="77"><highlight class="normal"></highlight></codeline>
<codeline lineno="78"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/></highlight><highlight class="keyword">template</highlight><highlight class="normal"><sp/>&lt;</highlight><highlight class="keyword">typename</highlight><highlight class="normal"><sp/>BeforeT,<sp/></highlight><highlight class="keyword">typename</highlight><highlight class="normal"><sp/>AfterT,<sp/></highlight><highlight class="keyword">typename</highlight><highlight class="normal"><sp/>KeyT&gt;</highlight></codeline>
<codeline lineno="79"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/></highlight><highlight class="keyword">inline</highlight><highlight class="normal"><sp/></highlight><highlight class="keyword">constexpr</highlight><highlight class="normal"><sp/></highlight><highlight class="keywordtype">bool</highlight><highlight class="normal"><sp/><ref refid="namespaceserif_1_1utils_1_1dependencies_1_1detail_1af24e48ad85f3dcae7f944b475e13bed6" kindref="member">observes_node_v&lt;AllNodesObserver&lt;BeforeT, AfterT&gt;</ref>,<sp/>KeyT&gt;<sp/>=<sp/></highlight><highlight class="keyword">true</highlight><highlight class="normal">;</highlight></codeline>
<codeline lineno="80"><highlight class="normal"></highlight></codeline>
<codeline lineno="82"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/></highlight><highlight class="keyword">template</highlight><highlight class="normal"><sp/>&lt;</highlight><highlight class="keyword">typename</highlight><highlight class="normal"><sp/>KeyT,<sp/></highlight><highlight class="keyword">typename</highlight><highlight class="normal"><sp/>BeforeT,<sp/></highlight><highlight class="keyword">typename</highlight><highlight class="normal"><sp/>AfterT&gt;</highlight></codeline>
<codeline lineno="83"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/>[[nodiscard]]<sp/></highlight><highlight class="keyword">decltype</highlight><highlight class="normal">(</highlight><highlight class="keyword">auto</highlight><highlight class="normal">)<sp/><ref refid="namespaceserif_1_1utils_1_1dependencies_1_1detail_1a7ff94caf001bd5c7123966e6f92a8abb" kindref="member">begin_node</ref>(<ref refid="structserif_1_1utils_1_1dependencies_1_1_node_observer" kindref="compound">NodeObserver&lt;KeyT, BeforeT, AfterT&gt;</ref>&amp;<sp/>observer)<sp/>{</highlight></codeline>
<codeline lineno="84"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/></highlight><highlight class="keywordflow">return</highlight><highlight class="normal"><sp/>std::invoke(observer.<ref refid="structserif_1_1utils_1_1dependencies_1_1_node_observer_1acf724e2009c9c55956c3668de32f3b5d" kindref="member">before</ref>);</highlight></codeline>
<codeline lineno="85"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/>}</highlight></codeline>
<codeline lineno="86"><highlight class="normal"></highlight></codeline>
<codeline lineno="88"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/></highlight><highlight class="keyword">template</highlight><highlight class="normal"><sp/>&lt;</highlight><highlight class="keyword">typename</highlight><highlight class="normal"><sp/>KeyT,<sp/></highlight><highlight class="keyword">typename</highlight><highlight class="normal"><sp/>BeforeT,<sp/></highlight><highlight class="keyword">typename</highlight><highlight class="normal"><sp/>AfterT&gt;</highlight></codeline>
<codeline lineno="89"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/>[[nodiscard]]<sp/></highlight><highlight class="keyword">decltype</highlight><highlight class="normal">(</highlight><highlight class="keyword">auto</highlight><highlight class="normal">)<sp/><ref refid="namespaceserif_1_1utils_1_1dependencies_1_1detail_1a7ff94caf001bd5c7123966e6f92a8abb" kindref="member">begin_node</ref>(AllNodesObserver&lt;BeforeT,<sp/>AfterT&gt;&amp;<sp/>observer)<sp/>{</highlight></codeline>
<codeline lineno="90"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/></highlight><highlight class="keywordflow">return</highlight><highlight class="normal"><sp/>std::invoke(observer.before,<sp/>std::type_identity&lt;KeyT&gt;{});</highlight></codeline>
<codeline lineno="91"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/>}</highlight></codeline>
<codeline lineno="92"><highlight class="normal"></highlight></codeline>
<codeline lineno="94"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/></highlight><highlight class="keyword">template</highlight><highlight class="normal"><sp/>&lt;</highlight><highlight class="keyword">typename</highlight><highlight class="normal"><sp/>InputT,<sp/></highlight><highlight class="keyword">typename</highlight><highlight class="normal"><sp/>ConsumerT,<sp/></highlight><highlight class="keyword">typename</highlight><highlight class="normal"><sp/>ObserverT,<sp/></highlight><highlight class="keyword">typename</highlight><highlight class="normal"><sp/>ValueT&gt;</highlight></codeline>
<codeline lineno="95"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/></highlight><highlight class="keywordtype">void</highlight><highlight class="normal"><sp/><ref refid="namespaceserif_1_1utils_1_1dependencies_1_1detail_1a2d1c9c4dc981bb4860436d10be716dc4" kindref="member">observe_input</ref>(ObserverT&amp;,<sp/></highlight><highlight class="keyword">const</highlight><highlight class="normal"><sp/>ValueT&amp;)<sp/>{}</highlight></codeline>
<codeline lineno="96"><highlight class="normal"></highlight></codeline>
<codeline lineno="98"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/></highlight><highlight class="keyword">template</highlight><highlight class="normal"><sp/>&lt;</highlight><highlight class="keyword">typename</highlight><highlight class="normal"><sp/>InputT,<sp/></highlight><highlight class="keyword">typename</highlight><highlight class="normal"><sp/>ConsumerT,<sp/></highlight><highlight class="keyword">typename</highlight><highlight class="normal"><sp/>FunctionT,<sp/></highlight><highlight class="keyword">typename</highlight><highlight class="normal"><sp/>ValueT&gt;</highlight></codeline>
<codeline lineno="99"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/></highlight><highlight class="keywordtype">void</highlight><highlight class="normal"><sp/><ref refid="namespaceserif_1_1utils_1_1dependencies_1_1detail_1a2d1c9c4dc981bb4860436d10be716dc4" kindref="member">observe_input</ref>(EdgeObserver&lt;InputT,<sp/>ConsumerT,<sp/>FunctionT&gt;&amp;<sp/>observer,<sp/></highlight><highlight class="keyword">const</highlight><highlight class="normal"><sp/>ValueT&amp;<sp/>value)<sp/>{</highlight></codeline>
<codeline lineno="100"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/>std::invoke(observer.function,<sp/>value);</highlight></codeline>
<codeline lineno="101"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/>}</highlight></codeline>
<codeline lineno="102"><highlight class="normal"></highlight></codeline>
<codeline lineno="104"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/></highlight><highlight class="keyword">template</highlight><highlight class="normal"><sp/>&lt;</highlight><highlight class="keyword">typename</highlight><highlight class="normal"><sp/>BeforeT,<sp/></highlight><highlight class="keyword">typename</highlight><highlight class="normal"><sp/>AfterT&gt;</highlight></codeline>
<codeline lineno="105" refid="classserif_1_1utils_1_1dependencies_1_1detail_1_1_node_observation" refkind="compound"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/></highlight><highlight class="keyword">class<sp/></highlight><highlight class="normal"><ref refid="classserif_1_1utils_1_1dependencies_1_1detail_1_1_node_observation_1a2acd09933274d4d99b37ea9e8d413c35" kindref="member">NodeObservation</ref><sp/>{</highlight></codeline>
<codeline lineno="106"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/></highlight><highlight class="keyword">public</highlight><highlight class="normal">:</highlight></codeline>
<codeline lineno="108"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><ref refid="classserif_1_1utils_1_1dependencies_1_1detail_1_1_node_observation_1a2acd09933274d4d99b37ea9e8d413c35" kindref="member">NodeObservation</ref>(BeforeT&amp;<sp/>before,<sp/>AfterT&amp;<sp/>after)<sp/>:</highlight></codeline>
<codeline lineno="109"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><ref refid="classserif_1_1utils_1_1dependencies_1_1detail_1_1_node_observation_1a610099195725badc013d7e4fa6075ca8" kindref="member">m_after</ref>(after),<sp/><ref refid="classserif_1_1utils_1_1dependencies_1_1detail_1_1_node_observation_1a0c885e377353ded5d49aa1ef53a10111" kindref="member">m_state</ref>(std::invoke(before)),<sp/><ref refid="classserif_1_1utils_1_1dependencies_1_1detail_1_1_node_observation_1a0d3f37ea4192947b441135a00377eb3b" kindref="member">m_exceptions</ref>(std::uncaught_exceptions())<sp/>{}</highlight></codeline>
<codeline lineno="110"><highlight class="normal"></highlight></codeline>
<codeline lineno="111"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><ref refid="classserif_1_1utils_1_1dependencies_1_1detail_1_1_node_observation_1a2acd09933274d4d99b37ea9e8d413c35" kindref="member">NodeObservation</ref>(</highlight><highlight class="keyword">const</highlight><highlight class="normal"><sp/><ref refid="classserif_1_1utils_1_1dependencies_1_1detail_1_1_node_observation_1a2acd09933274d4d99b37ea9e8d413c35" kindref="member">NodeObservation</ref>&amp;)<sp/>=<sp/></highlight><highlight class="keyword">delete</highlight><highlight class="normal">;</highlight></codeline>
<codeline lineno="112"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><ref refid="classserif_1_1utils_1_1dependencies_1_1detail_1_1_node_observation_1a2acd09933274d4d99b37ea9e8d413c35" kindref="member">NodeObservation</ref>&amp;<sp/><ref refid="classserif_1_1utils_1_1dependencies_1_1detail_1_1_node_observation_1a15941e29afdb23f865c08aee23347e78" kindref="member">operator=</ref>(</highlight><highlight class="keyword">const</highlight><highlight class="normal"><sp/><ref refid="classserif_1_1utils_1_1dependencies_1_1detail_1_1_node_observation_1a2acd09933274d4d99b37ea9e8d413c35" kindref="member">NodeObservation</ref>&amp;)<sp/>=<sp/></highlight><highlight class="keyword">delete</highlight><highlight class="normal">;</highlight></codeline>
<codeline lineno="113"><highlight class="normal"></highlight></codeline>
<codeline lineno="115"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><ref refid="classserif_1_1utils_1_1dependencies_1_1detail_1_1_node_observation_1ab73683cbabf4bbb5822bd827b5443484" kindref="member">~NodeObservation</ref>()<sp/></highlight><highlight class="keyword">noexcept</highlight><highlight class="normal"><sp/>{</highlight></codeline>
<codeline lineno="116"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/></highlight><highlight class="keyword">const</highlight><highlight class="normal"><sp/><ref refid="namespaceserif_1_1utils_1_1dependencies_1af2f6dab3a0204175602c7fc2348344f7" kindref="member">NodeOutcome</ref><sp/>outcome<sp/>=<sp/>std::uncaught_exceptions()<sp/>&gt;<sp/><ref refid="classserif_1_1utils_1_1dependencies_1_1detail_1_1_node_observation_1a0d3f37ea4192947b441135a00377eb3b" kindref="member">m_exceptions</ref><sp/>?<sp/><ref refid="namespaceserif_1_1utils_1_1dependencies_1af2f6dab3a0204175602c7fc2348344f7a42552b1f133f9f8eb406d4f306ea9fd1" kindref="member">NodeOutcome::exception</ref><sp/>:<sp/><ref refid="classserif_1_1utils_1_1dependencies_1_1detail_1_1_node_observation_1ab456ee1faaeb57242d8fb4ad906264ab" kindref="member">m_outcome</ref>;</highlight></codeline>
<codeline lineno="117"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/>std::invoke(<ref refid="classserif_1_1utils_1_1dependencies_1_1detail_1_1_node_observation_1a610099195725badc013d7e4fa6075ca8" kindref="member">m_after</ref>,<sp/><ref refid="classserif_1_1utils_1_1dependencies_1_1detail_1_1_node_observation_1a0c885e377353ded5d49aa1ef53a10111" kindref="member">m_state</ref>,<sp/>outcome);</highlight></codeline>
<codeline lineno="118"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/>}</highlight></codeline>
<codeline lineno="119"><highlight class="normal"></highlight></codeline>
<codeline lineno="121"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/></highlight><highlight class="keyword">template</highlight><highlight class="normal"><sp/>&lt;</highlight><highlight class="keyword">typename</highlight><highlight class="normal"><sp/>ResultT&gt;</highlight></codeline>
<codeline lineno="122"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/></highlight><highlight class="keywordtype">void</highlight><highlight class="normal"><sp/><ref refid="classserif_1_1utils_1_1dependencies_1_1detail_1_1_node_observation_1adfb791ac882a98ca1a5591556bd653fc" kindref="member">returned</ref>(</highlight><highlight class="keyword">const</highlight><highlight class="normal"><sp/>ResultT&amp;<sp/>result)<sp/></highlight><highlight class="keyword">noexcept</highlight><highlight class="normal"><sp/>{</highlight></codeline>
<codeline lineno="123"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><ref refid="classserif_1_1utils_1_1dependencies_1_1detail_1_1_node_observation_1ab456ee1faaeb57242d8fb4ad906264ab" kindref="member">m_outcome</ref><sp/>=<sp/><ref refid="namespaceserif_1_1utils_1_1dependencies_1af2f6dab3a0204175602c7fc2348344f7aaa8fb77e57d1ca18d593e909729871fe" kindref="member">NodeOutcome::completed</ref>;</highlight></codeline>
<codeline lineno="124"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/></highlight><highlight class="keywordflow">if</highlight><highlight class="normal"><sp/></highlight><highlight class="keyword">constexpr</highlight><highlight class="normal"><sp/>(<ref refid="structserif_1_1utils_1_1dependencies_1_1detail_1_1_result_1a1626bea98b5df0599141ac45e3ec268c" kindref="member">Result&lt;ResultT&gt;::fallible</ref>)<sp/>{</highlight></codeline>
<codeline lineno="125"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/></highlight><highlight class="keywordflow">if</highlight><highlight class="normal"><sp/>(!result)<sp/>{</highlight></codeline>
<codeline lineno="126"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><ref refid="classserif_1_1utils_1_1dependencies_1_1detail_1_1_node_observation_1ab456ee1faaeb57242d8fb4ad906264ab" kindref="member">m_outcome</ref><sp/>=<sp/><ref refid="namespaceserif_1_1utils_1_1dependencies_1af2f6dab3a0204175602c7fc2348344f7ac7537d6d48ecf261749c09a9f284bd45" kindref="member">NodeOutcome::rejected</ref>;</highlight></codeline>
<codeline lineno="127"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/>}</highlight></codeline>
<codeline lineno="128"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/>}</highlight></codeline>
<codeline lineno="129"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/>}</highlight></codeline>
<codeline lineno="130"><highlight class="normal"></highlight></codeline>
<codeline lineno="131"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/></highlight><highlight class="keyword">private</highlight><highlight class="normal">:</highlight></codeline>
<codeline lineno="132"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/>AfterT&amp;<sp/><ref refid="classserif_1_1utils_1_1dependencies_1_1detail_1_1_node_observation_1a610099195725badc013d7e4fa6075ca8" kindref="member">m_after</ref>;</highlight></codeline>
<codeline lineno="133"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/>std::invoke_result_t&lt;BeforeT&amp;&gt;<sp/><ref refid="classserif_1_1utils_1_1dependencies_1_1detail_1_1_node_observation_1a0c885e377353ded5d49aa1ef53a10111" kindref="member">m_state</ref>;</highlight></codeline>
<codeline lineno="134"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/></highlight><highlight class="keywordtype">int</highlight><highlight class="normal"><sp/><ref refid="classserif_1_1utils_1_1dependencies_1_1detail_1_1_node_observation_1a0d3f37ea4192947b441135a00377eb3b" kindref="member">m_exceptions</ref>;</highlight></codeline>
<codeline lineno="135"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><ref refid="namespaceserif_1_1utils_1_1dependencies_1af2f6dab3a0204175602c7fc2348344f7" kindref="member">NodeOutcome</ref><sp/><ref refid="classserif_1_1utils_1_1dependencies_1_1detail_1_1_node_observation_1ab456ee1faaeb57242d8fb4ad906264ab" kindref="member">m_outcome</ref>{<ref refid="namespaceserif_1_1utils_1_1dependencies_1af2f6dab3a0204175602c7fc2348344f7a42552b1f133f9f8eb406d4f306ea9fd1" kindref="member">NodeOutcome::exception</ref>};</highlight></codeline>
<codeline lineno="136"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/>};</highlight></codeline>
<codeline lineno="137"><highlight class="normal"><sp/><sp/><sp/><sp/>}</highlight></codeline>
<codeline lineno="138"><highlight class="normal"></highlight></codeline>
<codeline lineno="140"><highlight class="normal"><sp/><sp/><sp/><sp/></highlight><highlight class="keyword">template</highlight><highlight class="normal"><sp/>&lt;</highlight><highlight class="keyword">typename</highlight><highlight class="normal">...<sp/>Registrations&gt;<sp/></highlight><highlight class="keyword">requires</highlight><highlight class="normal"><sp/>(<ref refid="namespaceserif_1_1utils_1_1dependencies_1_1detail_1a54c9a0f2354c9edeef7db65bee38b1fe" kindref="member">detail::is_observer_v&lt;Registrations&gt;</ref><sp/>&amp;&amp;<sp/>...)</highlight></codeline>
<codeline lineno="141" refid="classserif_1_1utils_1_1dependencies_1_1_observers" refkind="compound"><highlight class="normal"><sp/><sp/><sp/><sp/></highlight><highlight class="keyword">class<sp/></highlight><highlight class="normal"><ref refid="classserif_1_1utils_1_1dependencies_1_1_observers_1a01b9547e8c3064b22d2426159825316a" kindref="member">Observers</ref><sp/>{</highlight></codeline>
<codeline lineno="142"><highlight class="normal"><sp/><sp/><sp/><sp/></highlight><highlight class="keyword">public</highlight><highlight class="normal">:</highlight></codeline>
<codeline lineno="144"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/></highlight><highlight class="keyword">explicit</highlight><highlight class="normal"><sp/><ref refid="classserif_1_1utils_1_1dependencies_1_1_observers_1a01b9547e8c3064b22d2426159825316a" kindref="member">Observers</ref>(Registrations...<sp/>observers)<sp/>:<sp/><ref refid="classserif_1_1utils_1_1dependencies_1_1_observers_1ad452d36150edb63fa0f8789629f3caa3" kindref="member">m_observers</ref>(std::move(observers)...)<sp/>{}</highlight></codeline>
<codeline lineno="145"><highlight class="normal"></highlight></codeline>
<codeline lineno="147"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/></highlight><highlight class="keyword">template</highlight><highlight class="normal"><sp/>&lt;</highlight><highlight class="keyword">typename</highlight><highlight class="normal"><sp/>KeyT,<sp/>std::</highlight><highlight class="keywordtype">size_t</highlight><highlight class="normal"><sp/>Position<sp/>=<sp/>0,<sp/></highlight><highlight class="keyword">typename</highlight><highlight class="normal"><sp/>FunctionT&gt;</highlight></codeline>
<codeline lineno="148"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/>[[nodiscard]]<sp/></highlight><highlight class="keyword">auto</highlight><highlight class="normal"><sp/><ref refid="classserif_1_1utils_1_1dependencies_1_1_observers_1a753cb2ead026c18aa244d9a61c2a34ae" kindref="member">evaluate</ref>(FunctionT&amp;&amp;<sp/>function)<sp/>{</highlight></codeline>
<codeline lineno="149"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/></highlight><highlight class="keywordflow">if</highlight><highlight class="normal"><sp/></highlight><highlight class="keyword">constexpr</highlight><highlight class="normal"><sp/>(Position<sp/>==<sp/></highlight><highlight class="keyword">sizeof</highlight><highlight class="normal">...(Registrations))<sp/>{</highlight></codeline>
<codeline lineno="150"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/></highlight><highlight class="keywordflow">return</highlight><highlight class="normal"><sp/>std::invoke(function);</highlight></codeline>
<codeline lineno="151"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/>}<sp/></highlight><highlight class="keywordflow">else</highlight><highlight class="normal"><sp/>{</highlight></codeline>
<codeline lineno="152"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/></highlight><highlight class="keyword">auto</highlight><highlight class="normal">&amp;<sp/>observer<sp/>=<sp/>std::get&lt;Position&gt;(<ref refid="classserif_1_1utils_1_1dependencies_1_1_observers_1ad452d36150edb63fa0f8789629f3caa3" kindref="member">m_observers</ref>);</highlight></codeline>
<codeline lineno="153"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/></highlight><highlight class="keywordflow">if</highlight><highlight class="normal"><sp/></highlight><highlight class="keyword">constexpr</highlight><highlight class="normal"><sp/>(<ref refid="namespaceserif_1_1utils_1_1dependencies_1_1detail_1af24e48ad85f3dcae7f944b475e13bed6" kindref="member">detail::observes_node_v</ref>&lt;std::remove_cvref_t&lt;</highlight><highlight class="keyword">decltype</highlight><highlight class="normal">(observer)&gt;,<sp/>KeyT&gt;)<sp/>{</highlight></codeline>
<codeline lineno="154"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/></highlight><highlight class="keyword">auto</highlight><highlight class="normal"><sp/>before<sp/>=<sp/>[&amp;observer]()<sp/>-&gt;<sp/></highlight><highlight class="keyword">decltype</highlight><highlight class="normal">(</highlight><highlight class="keyword">auto</highlight><highlight class="normal">)<sp/>{<sp/></highlight><highlight class="keywordflow">return</highlight><highlight class="normal"><sp/><ref refid="namespaceserif_1_1utils_1_1dependencies_1_1detail_1a7ff94caf001bd5c7123966e6f92a8abb" kindref="member">detail::begin_node&lt;KeyT&gt;</ref>(observer);<sp/>};</highlight></codeline>
<codeline lineno="155"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><ref refid="classserif_1_1utils_1_1dependencies_1_1detail_1_1_node_observation" kindref="compound">detail::NodeObservation</ref><sp/>observation(before,<sp/>observer.<ref refid="structserif_1_1utils_1_1dependencies_1_1_node_observer_1a3336900cd300302c7a45002991aa8799" kindref="member">after</ref>);</highlight></codeline>
<codeline lineno="156"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/></highlight><highlight class="keyword">auto</highlight><highlight class="normal"><sp/>result<sp/>=<sp/><ref refid="classserif_1_1utils_1_1dependencies_1_1_observers_1a753cb2ead026c18aa244d9a61c2a34ae" kindref="member">evaluate&lt;KeyT, Position + 1&gt;</ref>(function);</highlight></codeline>
<codeline lineno="157"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/>observation.<ref refid="classserif_1_1utils_1_1dependencies_1_1detail_1_1_node_observation_1adfb791ac882a98ca1a5591556bd653fc" kindref="member">returned</ref>(result);</highlight></codeline>
<codeline lineno="158"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/></highlight><highlight class="keywordflow">return</highlight><highlight class="normal"><sp/>result;</highlight></codeline>
<codeline lineno="159"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/>}<sp/></highlight><highlight class="keywordflow">else</highlight><highlight class="normal"><sp/>{</highlight></codeline>
<codeline lineno="160"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/></highlight><highlight class="keywordflow">return</highlight><highlight class="normal"><sp/><ref refid="classserif_1_1utils_1_1dependencies_1_1_observers_1a753cb2ead026c18aa244d9a61c2a34ae" kindref="member">evaluate&lt;KeyT, Position + 1&gt;</ref>(function);</highlight></codeline>
<codeline lineno="161"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/>}</highlight></codeline>
<codeline lineno="162"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/>}</highlight></codeline>
<codeline lineno="163"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/>}</highlight></codeline>
<codeline lineno="164"><highlight class="normal"></highlight></codeline>
<codeline lineno="166"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/></highlight><highlight class="keyword">template</highlight><highlight class="normal"><sp/>&lt;</highlight><highlight class="keyword">typename</highlight><highlight class="normal"><sp/>InputT,<sp/></highlight><highlight class="keyword">typename</highlight><highlight class="normal"><sp/>ConsumerT,<sp/></highlight><highlight class="keyword">typename</highlight><highlight class="normal"><sp/>ValueT&gt;</highlight></codeline>
<codeline lineno="167"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/></highlight><highlight class="keywordtype">void</highlight><highlight class="normal"><sp/><ref refid="classserif_1_1utils_1_1dependencies_1_1_observers_1a094d1d93c0c6c477609b01e67e1b7d36" kindref="member">edge</ref>(</highlight><highlight class="keyword">const</highlight><highlight class="normal"><sp/>ValueT&amp;<sp/>value)<sp/>{</highlight></codeline>
<codeline lineno="168"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/>std::apply([&amp;](</highlight><highlight class="keyword">auto</highlight><highlight class="normal">&amp;...<sp/>observers)<sp/>{</highlight></codeline>
<codeline lineno="169"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/>(<ref refid="namespaceserif_1_1utils_1_1dependencies_1_1detail_1a2d1c9c4dc981bb4860436d10be716dc4" kindref="member">detail::observe_input&lt;InputT, ConsumerT&gt;</ref>(observers,<sp/>value),<sp/>...);</highlight></codeline>
<codeline lineno="170"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/>},<sp/><ref refid="classserif_1_1utils_1_1dependencies_1_1_observers_1ad452d36150edb63fa0f8789629f3caa3" kindref="member">m_observers</ref>);</highlight></codeline>
<codeline lineno="171"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/>}</highlight></codeline>
<codeline lineno="172"><highlight class="normal"></highlight></codeline>
<codeline lineno="173"><highlight class="normal"><sp/><sp/><sp/><sp/></highlight><highlight class="keyword">private</highlight><highlight class="normal">:</highlight></codeline>
<codeline lineno="174"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/>std::tuple&lt;Registrations...&gt;<sp/><ref refid="classserif_1_1utils_1_1dependencies_1_1_observers_1ad452d36150edb63fa0f8789629f3caa3" kindref="member">m_observers</ref>;</highlight></codeline>
<codeline lineno="175"><highlight class="normal"><sp/><sp/><sp/><sp/>};</highlight></codeline>
<codeline lineno="176"><highlight class="normal"></highlight></codeline>
<codeline lineno="178"><highlight class="normal"><sp/><sp/><sp/><sp/></highlight><highlight class="keyword">template</highlight><highlight class="normal"><sp/>&lt;</highlight><highlight class="keyword">typename</highlight><highlight class="normal"><sp/>KeyT,<sp/></highlight><highlight class="keyword">typename</highlight><highlight class="normal"><sp/>BeforeT,<sp/></highlight><highlight class="keyword">typename</highlight><highlight class="normal"><sp/>AfterT&gt;</highlight></codeline>
<codeline lineno="179"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/></highlight><highlight class="keyword">requires</highlight><highlight class="normal"><sp/><ref refid="conceptserif_1_1utils_1_1dependencies_1_1_node_observer_callbacks" kindref="compound">NodeObserverCallbacks&lt;std::decay_t&lt;BeforeT&gt;</ref>,<sp/>std::decay_t&lt;AfterT&gt;&gt;<sp/>&amp;&amp;</highlight></codeline>
<codeline lineno="180"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/>std::constructible_from&lt;std::decay_t&lt;BeforeT&gt;,<sp/>BeforeT&gt;<sp/>&amp;&amp;<sp/>std::constructible_from&lt;std::decay_t&lt;AfterT&gt;,<sp/>AfterT&gt;</highlight></codeline>
<codeline lineno="181"><highlight class="normal"><sp/><sp/><sp/><sp/>[[nodiscard]]<sp/></highlight><highlight class="keyword">auto</highlight><highlight class="normal"><sp/><ref refid="namespaceserif_1_1utils_1_1dependencies_1a427c6ce690c7551cbdbbb5261bd8c125" kindref="member">observe_node</ref>(BeforeT&amp;&amp;<sp/>before,<sp/>AfterT&amp;&amp;<sp/>after)<sp/>{</highlight></codeline>
<codeline lineno="182"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/></highlight><highlight class="keywordflow">return</highlight><highlight class="normal"><sp/><ref refid="structserif_1_1utils_1_1dependencies_1_1_node_observer" kindref="compound">NodeObserver&lt;KeyT, std::decay_t&lt;BeforeT&gt;</ref>,<sp/>std::decay_t&lt;AfterT&gt;&gt;{</highlight></codeline>
<codeline lineno="183"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/>.before<sp/>=<sp/>std::forward&lt;BeforeT&gt;(before),<sp/>.after<sp/>=<sp/>std::forward&lt;AfterT&gt;(after)};</highlight></codeline>
<codeline lineno="184"><highlight class="normal"><sp/><sp/><sp/><sp/>}</highlight></codeline>
<codeline lineno="185"><highlight class="normal"></highlight></codeline>
<codeline lineno="187"><highlight class="normal"><sp/><sp/><sp/><sp/></highlight><highlight class="keyword">template</highlight><highlight class="normal"><sp/>&lt;</highlight><highlight class="keyword">typename</highlight><highlight class="normal"><sp/>BeforeT,<sp/></highlight><highlight class="keyword">typename</highlight><highlight class="normal"><sp/>AfterT&gt;</highlight></codeline>
<codeline lineno="188"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/></highlight><highlight class="keyword">requires</highlight><highlight class="normal"><sp/>std::constructible_from&lt;std::decay_t&lt;BeforeT&gt;,<sp/>BeforeT&gt;<sp/>&amp;&amp;<sp/>std::constructible_from&lt;std::decay_t&lt;AfterT&gt;,<sp/>AfterT&gt;</highlight></codeline>
<codeline lineno="189"><highlight class="normal"><sp/><sp/><sp/><sp/>[[nodiscard]]<sp/></highlight><highlight class="keyword">auto</highlight><highlight class="normal"><sp/><ref refid="namespaceserif_1_1utils_1_1dependencies_1a1011c9c6c8b4e2ca4e87b9826743dde5" kindref="member">observe_nodes</ref>(BeforeT&amp;&amp;<sp/>before,<sp/>AfterT&amp;&amp;<sp/>after)<sp/>{</highlight></codeline>
<codeline lineno="190"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/></highlight><highlight class="keywordflow">return</highlight><highlight class="normal"><sp/>AllNodesObserver&lt;std::decay_t&lt;BeforeT&gt;,<sp/>std::decay_t&lt;AfterT&gt;&gt;{</highlight></codeline>
<codeline lineno="191"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/>.before<sp/>=<sp/>std::forward&lt;BeforeT&gt;(before),<sp/>.after<sp/>=<sp/>std::forward&lt;AfterT&gt;(after)};</highlight></codeline>
<codeline lineno="192"><highlight class="normal"><sp/><sp/><sp/><sp/>}</highlight></codeline>
<codeline lineno="193"><highlight class="normal"></highlight></codeline>
<codeline lineno="195"><highlight class="normal"><sp/><sp/><sp/><sp/></highlight><highlight class="keyword">template</highlight><highlight class="normal"><sp/>&lt;</highlight><highlight class="keyword">typename</highlight><highlight class="normal"><sp/>InputT,<sp/></highlight><highlight class="keyword">typename</highlight><highlight class="normal"><sp/>ConsumerT,<sp/></highlight><highlight class="keyword">typename</highlight><highlight class="normal"><sp/>FunctionT&gt;</highlight></codeline>
<codeline lineno="196"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/></highlight><highlight class="keyword">requires</highlight><highlight class="normal"><sp/>std::constructible_from&lt;std::decay_t&lt;FunctionT&gt;,<sp/>FunctionT&gt;</highlight></codeline>
<codeline lineno="197"><highlight class="normal"><sp/><sp/><sp/><sp/>[[nodiscard]]<sp/></highlight><highlight class="keyword">auto</highlight><highlight class="normal"><sp/><ref refid="namespaceserif_1_1utils_1_1dependencies_1a1156ef3083e1e54eaabb23309b17fb57" kindref="member">observe_edge</ref>(FunctionT&amp;&amp;<sp/>function)<sp/>{</highlight></codeline>
<codeline lineno="198"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/></highlight><highlight class="keywordflow">return</highlight><highlight class="normal"><sp/><ref refid="structserif_1_1utils_1_1dependencies_1_1_edge_observer" kindref="compound">EdgeObserver&lt;InputT, ConsumerT, std::decay_t&lt;FunctionT&gt;</ref>&gt;{.function<sp/>=<sp/>std::forward&lt;FunctionT&gt;(function)};</highlight></codeline>
<codeline lineno="199"><highlight class="normal"><sp/><sp/><sp/><sp/>}</highlight></codeline>
<codeline lineno="200"><highlight class="normal"></highlight></codeline>
<codeline lineno="202"><highlight class="normal"><sp/><sp/><sp/><sp/></highlight><highlight class="keyword">template</highlight><highlight class="normal"><sp/>&lt;</highlight><highlight class="keyword">typename</highlight><highlight class="normal">...<sp/>Registrations&gt;</highlight></codeline>
<codeline lineno="203"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/></highlight><highlight class="keyword">requires</highlight><highlight class="normal"><sp/>(<ref refid="namespaceserif_1_1utils_1_1dependencies_1_1detail_1a54c9a0f2354c9edeef7db65bee38b1fe" kindref="member">detail::is_observer_v&lt;std::remove_cvref_t&lt;Registrations&gt;</ref>&gt;<sp/>&amp;&amp;<sp/>...)<sp/>&amp;&amp;</highlight></codeline>
<codeline lineno="204"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/>(std::constructible_from&lt;std::remove_cvref_t&lt;Registrations&gt;,<sp/>Registrations&gt;<sp/>&amp;&amp;<sp/>...)</highlight></codeline>
<codeline lineno="205"><highlight class="normal"><sp/><sp/><sp/><sp/>[[nodiscard]]<sp/></highlight><highlight class="keyword">auto</highlight><highlight class="normal"><sp/><ref refid="namespaceserif_1_1utils_1_1dependencies_1af617b846949f46d528f63c89b218887b" kindref="member">make_observers</ref>(Registrations&amp;&amp;...<sp/>observers)<sp/>{</highlight></codeline>
<codeline lineno="206"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/></highlight><highlight class="keywordflow">return</highlight><highlight class="normal"><sp/><ref refid="classserif_1_1utils_1_1dependencies_1_1_observers" kindref="compound">Observers&lt;std::remove_cvref_t&lt;Registrations&gt;</ref>...&gt;(std::forward&lt;Registrations&gt;(observers)...);</highlight></codeline>
<codeline lineno="207"><highlight class="normal"><sp/><sp/><sp/><sp/>}</highlight></codeline>
<codeline lineno="208"><highlight class="normal"></highlight></codeline>
<codeline lineno="210" refid="structserif_1_1utils_1_1dependencies_1_1_no_graph_observers" refkind="compound"><highlight class="normal"><sp/><sp/><sp/><sp/></highlight><highlight class="keyword">struct<sp/></highlight><highlight class="normal"><ref refid="structserif_1_1utils_1_1dependencies_1_1_no_graph_observers" kindref="compound">NoGraphObservers</ref><sp/>{</highlight></codeline>
<codeline lineno="212"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/></highlight><highlight class="keyword">template</highlight><highlight class="normal"><sp/>&lt;</highlight><highlight class="keyword">typename</highlight><highlight class="normal"><sp/>GraphT&gt;</highlight></codeline>
<codeline lineno="213"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/>[[nodiscard]]<sp/></highlight><highlight class="keyword">auto</highlight><highlight class="normal"><sp/><ref refid="structserif_1_1utils_1_1dependencies_1_1_no_graph_observers_1a9d7d365e91a7dc6f15a1a12c2f2d86cc" kindref="member">operator()</ref>(std::type_identity&lt;GraphT&gt;)</highlight><highlight class="keyword"><sp/>const<sp/></highlight><highlight class="normal">{</highlight></codeline>
<codeline lineno="214"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/></highlight><highlight class="keywordflow">return</highlight><highlight class="normal"><sp/><ref refid="classserif_1_1utils_1_1dependencies_1_1_observers" kindref="compound">Observers&lt;&gt;</ref>{};</highlight></codeline>
<codeline lineno="215"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/>}</highlight></codeline>
<codeline lineno="216"><highlight class="normal"><sp/><sp/><sp/><sp/>};</highlight></codeline>
<codeline lineno="217"><highlight class="normal"></highlight></codeline>
<codeline lineno="218"><highlight class="normal"><sp/><sp/><sp/><sp/></highlight><highlight class="keyword">namespace<sp/></highlight><highlight class="normal"><ref refid="namespaceserif_1_1utils_1_1dependencies_1_1detail" kindref="compound">detail</ref><sp/>{</highlight></codeline>
<codeline lineno="220"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/></highlight><highlight class="keyword">template</highlight><highlight class="normal"><sp/>&lt;</highlight><highlight class="keyword">typename</highlight><highlight class="normal"><sp/>GraphT,<sp/></highlight><highlight class="keyword">typename</highlight><highlight class="normal"><sp/>BindingsT,<sp/></highlight><highlight class="keyword">typename</highlight><highlight class="normal"><sp/>KeyT,<sp/></highlight><highlight class="keyword">typename</highlight><highlight class="normal"><sp/>BeforeT,<sp/></highlight><highlight class="keyword">typename</highlight><highlight class="normal"><sp/>AfterT&gt;</highlight></codeline>
<codeline lineno="221"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/>[[nodiscard]]<sp/></highlight><highlight class="keyword">consteval</highlight><highlight class="normal"><sp/></highlight><highlight class="keywordtype">bool</highlight><highlight class="normal"><sp/><ref refid="namespaceserif_1_1utils_1_1dependencies_1_1detail_1a3cefb4aba3cf944c1cc738c523616fd8" kindref="member">valid_observer</ref>(<ref refid="structserif_1_1utils_1_1dependencies_1_1_node_observer" kindref="compound">NodeObserver&lt;KeyT, BeforeT, AfterT&gt;</ref>*)<sp/>{</highlight></codeline>
<codeline lineno="222"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/></highlight><highlight class="keywordflow">return</highlight><highlight class="normal"><sp/><ref refid="conceptserif_1_1utils_1_1dependencies_1_1_contains_key" kindref="compound">ContainsKey&lt;KeyT, typename GraphT::Results&gt;</ref>;</highlight></codeline>
<codeline lineno="223"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/>}</highlight></codeline>
<codeline lineno="224"><highlight class="normal"></highlight></codeline>
<codeline lineno="226"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/></highlight><highlight class="keyword">template</highlight><highlight class="normal"><sp/>&lt;</highlight><highlight class="keyword">typename</highlight><highlight class="normal"><sp/>BeforeT,<sp/></highlight><highlight class="keyword">typename</highlight><highlight class="normal"><sp/>AfterT,<sp/></highlight><highlight class="keyword">typename</highlight><highlight class="normal">...<sp/>Keys&gt;</highlight></codeline>
<codeline lineno="227"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/>[[nodiscard]]<sp/></highlight><highlight class="keyword">consteval</highlight><highlight class="normal"><sp/></highlight><highlight class="keywordtype">bool</highlight><highlight class="normal"><sp/><ref refid="namespaceserif_1_1utils_1_1dependencies_1_1detail_1a291daca460e39045e586084e8919d926" kindref="member">valid_all_nodes</ref>(KeyList&lt;Keys...&gt;)<sp/>{</highlight></codeline>
<codeline lineno="228"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/></highlight><highlight class="keyword">constexpr</highlight><highlight class="normal"><sp/>std::array&lt;bool,<sp/></highlight><highlight class="keyword">sizeof</highlight><highlight class="normal">...(Keys)&gt;<sp/>valid{KeyedNodeObserverCallbacks&lt;BeforeT,<sp/>AfterT,<sp/>Keys&gt;...};</highlight></codeline>
<codeline lineno="229"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/></highlight><highlight class="keywordflow">for</highlight><highlight class="normal"><sp/>(</highlight><highlight class="keyword">const</highlight><highlight class="normal"><sp/></highlight><highlight class="keywordtype">bool</highlight><highlight class="normal"><sp/>entry<sp/>:<sp/>valid)<sp/>{</highlight></codeline>
<codeline lineno="230"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/></highlight><highlight class="keywordflow">if</highlight><highlight class="normal"><sp/>(!entry)<sp/>{<sp/></highlight><highlight class="keywordflow">return</highlight><highlight class="normal"><sp/></highlight><highlight class="keyword">false</highlight><highlight class="normal">;<sp/>}</highlight></codeline>
<codeline lineno="231"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/>}</highlight></codeline>
<codeline lineno="232"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/></highlight><highlight class="keywordflow">return</highlight><highlight class="normal"><sp/></highlight><highlight class="keyword">true</highlight><highlight class="normal">;</highlight></codeline>
<codeline lineno="233"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/>}</highlight></codeline>
<codeline lineno="234"><highlight class="normal"></highlight></codeline>
<codeline lineno="236"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/></highlight><highlight class="keyword">template</highlight><highlight class="normal"><sp/>&lt;</highlight><highlight class="keyword">typename</highlight><highlight class="normal"><sp/>GraphT,<sp/></highlight><highlight class="keyword">typename</highlight><highlight class="normal"><sp/>BindingsT,<sp/></highlight><highlight class="keyword">typename</highlight><highlight class="normal"><sp/>BeforeT,<sp/></highlight><highlight class="keyword">typename</highlight><highlight class="normal"><sp/>AfterT&gt;</highlight></codeline>
<codeline lineno="237"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/>[[nodiscard]]<sp/></highlight><highlight class="keyword">consteval</highlight><highlight class="normal"><sp/></highlight><highlight class="keywordtype">bool</highlight><highlight class="normal"><sp/><ref refid="namespaceserif_1_1utils_1_1dependencies_1_1detail_1a3cefb4aba3cf944c1cc738c523616fd8" kindref="member">valid_observer</ref>(AllNodesObserver&lt;BeforeT,<sp/>AfterT&gt;*)<sp/>{</highlight></codeline>
<codeline lineno="238"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/></highlight><highlight class="keywordflow">return</highlight><highlight class="normal"><sp/><ref refid="namespaceserif_1_1utils_1_1dependencies_1_1detail_1a291daca460e39045e586084e8919d926" kindref="member">valid_all_nodes&lt;BeforeT, AfterT&gt;</ref>(</highlight><highlight class="keyword">typename</highlight><highlight class="normal"><sp/>GraphT::Results{});</highlight></codeline>
<codeline lineno="239"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/>}</highlight></codeline>
<codeline lineno="240"><highlight class="normal"></highlight></codeline>
<codeline lineno="242"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/></highlight><highlight class="keyword">template</highlight><highlight class="normal"><sp/>&lt;</highlight><highlight class="keyword">typename</highlight><highlight class="normal"><sp/>GraphT,<sp/></highlight><highlight class="keyword">typename</highlight><highlight class="normal"><sp/>BindingsT,<sp/></highlight><highlight class="keyword">typename</highlight><highlight class="normal"><sp/>InputT,<sp/></highlight><highlight class="keyword">typename</highlight><highlight class="normal"><sp/>ConsumerT,<sp/></highlight><highlight class="keyword">typename</highlight><highlight class="normal"><sp/>FunctionT&gt;</highlight></codeline>
<codeline lineno="243"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/>[[nodiscard]]<sp/></highlight><highlight class="keyword">consteval</highlight><highlight class="normal"><sp/></highlight><highlight class="keywordtype">bool</highlight><highlight class="normal"><sp/><ref refid="namespaceserif_1_1utils_1_1dependencies_1_1detail_1a3cefb4aba3cf944c1cc738c523616fd8" kindref="member">valid_observer</ref>(EdgeObserver&lt;InputT,<sp/>ConsumerT,<sp/>FunctionT&gt;*)<sp/>{</highlight></codeline>
<codeline lineno="244"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/></highlight><highlight class="keywordflow">if</highlight><highlight class="normal"><sp/></highlight><highlight class="keyword">constexpr</highlight><highlight class="normal"><sp/>(!ContainsKey&lt;ConsumerT,<sp/>typename<sp/>GraphT::Results&gt;)<sp/>{</highlight></codeline>
<codeline lineno="245"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/></highlight><highlight class="keywordflow">return</highlight><highlight class="normal"><sp/></highlight><highlight class="keyword">false</highlight><highlight class="normal">;</highlight></codeline>
<codeline lineno="246"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/>}<sp/></highlight><highlight class="keywordflow">else</highlight><highlight class="normal"><sp/>{</highlight></codeline>
<codeline lineno="247"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/></highlight><highlight class="keyword">using<sp/></highlight><highlight class="normal">Consumer<sp/>=<sp/>GraphT::template<sp/>ComputationAt&lt;GraphT::template<sp/>index&lt;ConsumerT&gt;()&gt;;</highlight></codeline>
<codeline lineno="248"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/></highlight><highlight class="keywordflow">if</highlight><highlight class="normal"><sp/></highlight><highlight class="keyword">constexpr</highlight><highlight class="normal"><sp/>(!ContainsKey&lt;InputT,<sp/>typename<sp/>Consumer::Inputs&gt;)<sp/>{</highlight></codeline>
<codeline lineno="249"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/></highlight><highlight class="keywordflow">return</highlight><highlight class="normal"><sp/></highlight><highlight class="keyword">false</highlight><highlight class="normal">;</highlight></codeline>
<codeline lineno="250"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/>}<sp/></highlight><highlight class="keywordflow">else</highlight><highlight class="normal"><sp/>{</highlight></codeline>
<codeline lineno="251"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/></highlight><highlight class="keywordflow">return</highlight><highlight class="normal"><sp/></highlight><highlight class="keyword">requires</highlight><highlight class="normal">(FunctionT&amp;<sp/>function,<sp/></highlight><highlight class="keyword">const</highlight><highlight class="normal"><sp/><ref refid="namespaceserif_1_1utils_1_1dependencies_1adc0d56ab32ca6ea92c3732dde92fa6a1" kindref="member">bound_type_t&lt;BindingsT, InputT&gt;</ref>&amp;<sp/><ref refid="namespaceserif_1_1discretization_1_1backend_1_1mfem_1af75f98db90618153ea4ca169945733f7a2063c1608d6e0baf80249c42e2be5804" kindref="member">value</ref>)<sp/>{</highlight></codeline>
<codeline lineno="252"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/>{<sp/>std::invoke(function,<sp/>value)<sp/>}<sp/>-&gt;<sp/>std::same_as&lt;void&gt;;</highlight></codeline>
<codeline lineno="253"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/>};</highlight></codeline>
<codeline lineno="254"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/>}</highlight></codeline>
<codeline lineno="255"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/>}</highlight></codeline>
<codeline lineno="256"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/>}</highlight></codeline>
<codeline lineno="257"><highlight class="normal"></highlight></codeline>
<codeline lineno="258"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/></highlight><highlight class="keyword">template</highlight><highlight class="normal"><sp/>&lt;</highlight><highlight class="keyword">typename</highlight><highlight class="normal"><sp/>ObserversT,<sp/></highlight><highlight class="keyword">typename</highlight><highlight class="normal"><sp/>GraphT,<sp/></highlight><highlight class="keyword">typename</highlight><highlight class="normal"><sp/>ContextT,<sp/></highlight><highlight class="keywordtype">bool</highlight><highlight class="normal"><sp/>Val</highlight><highlight class="keywordtype">id</highlight><highlight class="normal"><sp/>=<sp/>ComputationGraphFor&lt;GraphT,<sp/>ContextT&gt;&gt;</highlight></codeline>
<codeline lineno="259" refid="structserif_1_1utils_1_1dependencies_1_1detail_1_1_valid_observers" refkind="compound"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/></highlight><highlight class="keyword">struct<sp/></highlight><highlight class="normal"><ref refid="structserif_1_1utils_1_1dependencies_1_1detail_1_1_valid_observers" kindref="compound">ValidObservers</ref><sp/>:<sp/>std::false_type<sp/>{};</highlight></codeline>
<codeline lineno="260"><highlight class="normal"></highlight></codeline>
<codeline lineno="261"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/></highlight><highlight class="keyword">template</highlight><highlight class="normal"><sp/>&lt;</highlight><highlight class="keyword">typename</highlight><highlight class="normal">...<sp/>Registrations,<sp/></highlight><highlight class="keyword">typename</highlight><highlight class="normal"><sp/>GraphT,<sp/></highlight><highlight class="keyword">typename</highlight><highlight class="normal"><sp/>ContextT&gt;</highlight></codeline>
<codeline lineno="262" refid="structserif_1_1utils_1_1dependencies_1_1detail_1_1_valid_observers_3_01_observers_3_01_registratabaa0417bbf6f785373b4d94e684892b" refkind="compound"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/></highlight><highlight class="keyword">struct<sp/></highlight><highlight class="normal"><ref refid="structserif_1_1utils_1_1dependencies_1_1detail_1_1_valid_observers" kindref="compound">ValidObservers</ref>&lt;<ref refid="classserif_1_1utils_1_1dependencies_1_1_observers" kindref="compound">Observers</ref>&lt;Registrations...&gt;,<sp/>GraphT,<sp/>ContextT,<sp/>true&gt;<sp/>:<sp/>std::bool_constant&lt;</highlight></codeline>
<codeline lineno="263"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/>(valid_observer&lt;GraphT,<sp/>typename<sp/>ComputationGraphSchema&lt;GraphT,<sp/>ContextT&gt;::ResolvedBindings&gt;(static_cast&lt;Registrations*&gt;(nullptr))<sp/>&amp;&amp;<sp/>...)&gt;<sp/>{};</highlight></codeline>
<codeline lineno="264"><highlight class="normal"><sp/><sp/><sp/><sp/>}</highlight></codeline>
<codeline lineno="265"><highlight class="normal"></highlight></codeline>
<codeline lineno="267"><highlight class="normal"><sp/><sp/><sp/><sp/></highlight><highlight class="keyword">template</highlight><highlight class="normal"><sp/>&lt;</highlight><highlight class="keyword">typename</highlight><highlight class="normal"><sp/>ObserversT,<sp/></highlight><highlight class="keyword">typename</highlight><highlight class="normal"><sp/>GraphT,<sp/></highlight><highlight class="keyword">typename</highlight><highlight class="normal"><sp/>ContextT&gt;</highlight></codeline>
<codeline lineno="268" refid="conceptserif_1_1utils_1_1dependencies_1_1_observers_for" refkind="compound"><highlight class="normal"><sp/><sp/><sp/><sp/></highlight><highlight class="keyword">concept<sp/></highlight><highlight class="normal"><ref refid="conceptserif_1_1utils_1_1dependencies_1_1_observers_for" kindref="compound">ObserversFor</ref><sp/>=<sp/><ref refid="structserif_1_1utils_1_1dependencies_1_1detail_1_1_valid_observers" kindref="compound">detail::ValidObservers&lt;std::remove_cvref_t&lt;ObserversT&gt;</ref>,<sp/>std::remove_cvref_t&lt;GraphT&gt;,<sp/>std::remove_cvref_t&lt;ContextT&gt;&gt;::value;</highlight></codeline>
<codeline lineno="269"><highlight class="normal">}</highlight></codeline>
<codeline lineno="270"><highlight class="normal"></highlight></codeline>
<codeline lineno="271"><highlight class="normal"></highlight><highlight class="keyword">template</highlight><highlight class="normal"><sp/>&lt;&gt;</highlight></codeline>
<codeline lineno="272" refid="structstd_1_1formatter_3_01serif_1_1utils_1_1dependencies_1_1_node_outcome_01_4" refkind="compound"><highlight class="normal"></highlight><highlight class="keyword">struct<sp/></highlight><highlight class="normal">std::formatter&lt;<ref refid="namespaceserif" kindref="compound">serif</ref>::utils::dependencies::NodeOutcome&gt;<sp/>:<sp/>std::formatter&lt;std::string_view&gt;<sp/>{</highlight></codeline>
<codeline lineno="273"><highlight class="normal"><sp/><sp/><sp/><sp/></highlight><highlight class="keyword">auto</highlight><highlight class="normal"><sp/><ref refid="structstd_1_1formatter_3_01serif_1_1utils_1_1dependencies_1_1_node_outcome_01_4_1a85a6c2afeec70630cdee295f79de56f4" kindref="member">format</ref>(</highlight><highlight class="keyword">const</highlight><highlight class="normal"><sp/><ref refid="namespaceserif_1_1utils_1_1dependencies_1af2f6dab3a0204175602c7fc2348344f7" kindref="member">serif::utils::dependencies::NodeOutcome</ref>&amp;<sp/>outcome,<sp/></highlight><highlight class="keyword">auto</highlight><highlight class="normal">&amp;<sp/>ctx)</highlight><highlight class="keyword"><sp/>const<sp/></highlight><highlight class="normal">{</highlight></codeline>
<codeline lineno="274"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/>std::string_view<sp/>name<sp/>=<sp/></highlight><highlight class="stringliteral">&quot;unknown&quot;</highlight><highlight class="normal">;</highlight></codeline>
<codeline lineno="275"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/></highlight><highlight class="keywordflow">switch</highlight><highlight class="normal"><sp/>(outcome)<sp/>{</highlight></codeline>
<codeline lineno="276"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/></highlight><highlight class="keywordflow">case</highlight><highlight class="normal"><sp/><ref refid="namespaceserif_1_1utils_1_1dependencies_1af2f6dab3a0204175602c7fc2348344f7aaa8fb77e57d1ca18d593e909729871fe" kindref="member">serif::utils::dependencies::NodeOutcome::completed</ref>:<sp/>name<sp/>=<sp/></highlight><highlight class="stringliteral">&quot;completed&quot;</highlight><highlight class="normal">;<sp/></highlight><highlight class="keywordflow">break</highlight><highlight class="normal">;</highlight></codeline>
<codeline lineno="277"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/></highlight><highlight class="keywordflow">case</highlight><highlight class="normal"><sp/><ref refid="namespaceserif_1_1utils_1_1dependencies_1af2f6dab3a0204175602c7fc2348344f7ac7537d6d48ecf261749c09a9f284bd45" kindref="member">serif::utils::dependencies::NodeOutcome::rejected</ref>:<sp/>name<sp/>=<sp/></highlight><highlight class="stringliteral">&quot;rejected&quot;</highlight><highlight class="normal">;<sp/></highlight><highlight class="keywordflow">break</highlight><highlight class="normal">;</highlight></codeline>
<codeline lineno="278"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/></highlight><highlight class="keywordflow">case</highlight><highlight class="normal"><sp/><ref refid="namespaceserif_1_1utils_1_1dependencies_1af2f6dab3a0204175602c7fc2348344f7a42552b1f133f9f8eb406d4f306ea9fd1" kindref="member">serif::utils::dependencies::NodeOutcome::exception</ref>:<sp/>name<sp/>=<sp/></highlight><highlight class="stringliteral">&quot;exception&quot;</highlight><highlight class="normal">;<sp/></highlight><highlight class="keywordflow">break</highlight><highlight class="normal">;</highlight></codeline>
<codeline lineno="279"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/>}</highlight></codeline>
<codeline lineno="280"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/></highlight><highlight class="keywordflow">return</highlight><highlight class="normal"><sp/>std::formatter&lt;std::string_view&gt;::format(name,<sp/>ctx);</highlight></codeline>
<codeline lineno="281"><highlight class="normal"><sp/><sp/><sp/><sp/>}</highlight></codeline>
<codeline lineno="282"><highlight class="normal">};</highlight></codeline>
</programlisting>
<location file="src/include/serif/utils/dependencies/observers.hpp"/>
</compounddef>
</doxygen>