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A micro web framework for Rust.
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<h1 class='fqn'><span class='in-band'><a href='index.html'>quick_error</a>::<wbr><a class='macro' href=''>quick_error!</a></span><span class='out-of-band'><span id='render-detail'>
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<pre class='rust macro'>
<span class='macro'>macro_rules</span><span class='macro'>!</span> <span class='ident'>quick_error</span> {
    (   $(<span class='attribute'>#[<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>meta</span>:<span class='ident'>meta</span>]</span>)<span class='op'>*</span>
        <span class='kw'>pub</span> <span class='kw'>enum</span> <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>name</span>:<span class='ident'>ident</span> { $(<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>chunks</span>:<span class='ident'>tt</span>)<span class='op'>*</span> }
    ) <span class='op'>=&gt;</span> { ... };
    (   $(<span class='attribute'>#[<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>meta</span>:<span class='ident'>meta</span>]</span>)<span class='op'>*</span>
        <span class='kw'>enum</span> <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>name</span>:<span class='ident'>ident</span> { $(<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>chunks</span>:<span class='ident'>tt</span>)<span class='op'>*</span> }
    ) <span class='op'>=&gt;</span> { ... };
    (<span class='ident'>SORT</span> [<span class='kw'>enum</span> <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>name</span>:<span class='ident'>ident</span> $(<span class='attribute'>#[<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>meta</span>:<span class='ident'>meta</span>]</span>)<span class='op'>*</span> ]
        <span class='kw'>enum</span> [ $( $(<span class='attribute'>#[<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>emeta</span>:<span class='ident'>meta</span>]</span>)<span class='op'>*</span>
                  <span class='op'>=&gt;</span> <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>eitem</span>:<span class='ident'>ident</span> $( ( $(<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>etyp</span>:<span class='ident'>ty</span>),<span class='op'>*</span> ) )<span class='op'>*</span> )<span class='op'>*</span> ]
        <span class='ident'>items</span> [ $( <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>iitem</span>:<span class='ident'>ident</span> $(( $(<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>ivar</span>:<span class='ident'>ident</span> : <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>ityp</span>:<span class='ident'>ty</span>),<span class='op'>*</span> ))<span class='op'>*</span>
                                { $(<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>ifuncs</span>:<span class='ident'>tt</span>)<span class='op'>*</span> } )<span class='op'>*</span> ]
        <span class='ident'>buf</span> [ ]
        <span class='ident'>queue</span> [ ]
    ) <span class='op'>=&gt;</span> { ... };
    (<span class='ident'>SORT</span> [<span class='kw'>pub</span> <span class='kw'>enum</span> <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>name</span>:<span class='ident'>ident</span> $(<span class='attribute'>#[<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>meta</span>:<span class='ident'>meta</span>]</span>)<span class='op'>*</span> ]
        <span class='kw'>enum</span> [ $( $(<span class='attribute'>#[<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>emeta</span>:<span class='ident'>meta</span>]</span>)<span class='op'>*</span>
                  <span class='op'>=&gt;</span> <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>eitem</span>:<span class='ident'>ident</span> $( ( $(<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>etyp</span>:<span class='ident'>ty</span>),<span class='op'>*</span> ) )<span class='op'>*</span> )<span class='op'>*</span> ]
        <span class='ident'>items</span> [ $( <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>iitem</span>:<span class='ident'>ident</span> $(( $(<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>ivar</span>:<span class='ident'>ident</span> : <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>ityp</span>:<span class='ident'>ty</span>),<span class='op'>*</span> ))<span class='op'>*</span>
                                { $(<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>ifuncs</span>:<span class='ident'>tt</span>)<span class='op'>*</span> } )<span class='op'>*</span> ]
        <span class='ident'>buf</span> [ ]
        <span class='ident'>queue</span> [ ]
    ) <span class='op'>=&gt;</span> { ... };
    (<span class='ident'>SORT</span> [$(<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>def</span>:<span class='ident'>tt</span>)<span class='op'>*</span>]
        <span class='kw'>enum</span> [ $( $(<span class='attribute'>#[<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>emeta</span>:<span class='ident'>meta</span>]</span>)<span class='op'>*</span>
                  <span class='op'>=&gt;</span> <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>eitem</span>:<span class='ident'>ident</span> $(( $(<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>etyp</span>:<span class='ident'>ty</span>),<span class='op'>*</span> ))<span class='op'>*</span> )<span class='op'>*</span> ]
        <span class='ident'>items</span> [ $( <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>iitem</span>:<span class='ident'>ident</span> $(( $(<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>ivar</span>:<span class='ident'>ident</span> : <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>ityp</span>:<span class='ident'>ty</span>),<span class='op'>*</span> ))<span class='op'>*</span>
                                { $(<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>ifuncs</span>:<span class='ident'>tt</span>)<span class='op'>*</span> } )<span class='op'>*</span> ]
        <span class='ident'>buf</span> [ $( <span class='attribute'>#[<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>bmeta</span>:<span class='ident'>meta</span>]</span> )<span class='op'>*</span> ]
        <span class='ident'>queue</span> [ <span class='attribute'>#[<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>qmeta</span>:<span class='ident'>meta</span>]</span> $(<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>tail</span>:<span class='ident'>tt</span>)<span class='op'>*</span> ]
    ) <span class='op'>=&gt;</span> { ... };
    (<span class='ident'>SORT</span> [$(<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>def</span>:<span class='ident'>tt</span>)<span class='op'>*</span>]
        <span class='kw'>enum</span> [ $( $(<span class='attribute'>#[<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>emeta</span>:<span class='ident'>meta</span>]</span>)<span class='op'>*</span>
                  <span class='op'>=&gt;</span> <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>eitem</span>:<span class='ident'>ident</span> $(( $(<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>etyp</span>:<span class='ident'>ty</span>),<span class='op'>*</span> ))<span class='op'>*</span> )<span class='op'>*</span> ]
        <span class='ident'>items</span> [ $( <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>iitem</span>:<span class='ident'>ident</span> $(( $(<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>ivar</span>:<span class='ident'>ident</span> : <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>ityp</span>:<span class='ident'>ty</span>),<span class='op'>*</span> ))<span class='op'>*</span>
                                { $(<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>ifuncs</span>:<span class='ident'>tt</span>)<span class='op'>*</span> } )<span class='op'>*</span> ]
        <span class='ident'>buf</span> [ $( <span class='attribute'>#[<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>bmeta</span>:<span class='ident'>meta</span>]</span> )<span class='op'>*</span> ]
        <span class='ident'>queue</span> [ <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>qitem</span>:<span class='ident'>ident</span> $(<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>tail</span>:<span class='ident'>tt</span>)<span class='op'>*</span> ]
    ) <span class='op'>=&gt;</span> { ... };
    (<span class='ident'>SORT</span> [$(<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>def</span>:<span class='ident'>tt</span>)<span class='op'>*</span>]
        <span class='kw'>enum</span> [ $( $(<span class='attribute'>#[<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>emeta</span>:<span class='ident'>meta</span>]</span>)<span class='op'>*</span>
                  <span class='op'>=&gt;</span> <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>eitem</span>:<span class='ident'>ident</span> $(( $(<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>etyp</span>:<span class='ident'>ty</span>),<span class='op'>*</span> ))<span class='op'>*</span> )<span class='op'>*</span> ]
        <span class='ident'>items</span> [ $( <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>iitem</span>:<span class='ident'>ident</span> $(( $(<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>ivar</span>:<span class='ident'>ident</span> : <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>ityp</span>:<span class='ident'>ty</span>),<span class='op'>*</span> ))<span class='op'>*</span>
                                { $(<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>ifuncs</span>:<span class='ident'>tt</span>)<span class='op'>*</span> } )<span class='op'>*</span> ]
        <span class='ident'>buf</span> [ $( <span class='attribute'>#[<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>bmeta</span>:<span class='ident'>meta</span>]</span> )<span class='op'>*</span>
            <span class='op'>=&gt;</span> <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>bitem</span>:<span class='ident'>ident</span> $(( $(<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>bvar</span>:<span class='ident'>ident</span> : <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>btyp</span>:<span class='ident'>ty</span>),<span class='op'>*</span> ))<span class='op'>*</span> ]
        <span class='ident'>queue</span> [ <span class='attribute'>#[<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>qmeta</span>:<span class='ident'>meta</span>]</span> $(<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>tail</span>:<span class='ident'>tt</span>)<span class='op'>*</span> ]
    ) <span class='op'>=&gt;</span> { ... };
    (<span class='ident'>SORT</span> [$(<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>def</span>:<span class='ident'>tt</span>)<span class='op'>*</span>]
        <span class='kw'>enum</span> [ $( $(<span class='attribute'>#[<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>emeta</span>:<span class='ident'>meta</span>]</span>)<span class='op'>*</span>
                  <span class='op'>=&gt;</span> <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>eitem</span>:<span class='ident'>ident</span> $(( $(<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>etyp</span>:<span class='ident'>ty</span>),<span class='op'>*</span> ))<span class='op'>*</span> )<span class='op'>*</span> ]
        <span class='ident'>items</span> [ $( <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>iitem</span>:<span class='ident'>ident</span> $(( $(<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>ivar</span>:<span class='ident'>ident</span> : <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>ityp</span>:<span class='ident'>ty</span>),<span class='op'>*</span> ))<span class='op'>*</span>
                                { $(<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>ifuncs</span>:<span class='ident'>tt</span>)<span class='op'>*</span> } )<span class='op'>*</span> ]
        <span class='ident'>buf</span> [ $( <span class='attribute'>#[<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>bmeta</span>:<span class='ident'>meta</span>]</span> )<span class='op'>*</span> <span class='op'>=&gt;</span> <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>bitem</span>:<span class='ident'>ident</span> ]
        <span class='ident'>queue</span> [ ( $( <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>qvar</span>:<span class='ident'>ident</span> : <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>qtyp</span>:<span class='ident'>ty</span> ),<span class='op'>*</span> ) $(<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>tail</span>:<span class='ident'>tt</span>)<span class='op'>*</span> ]
    ) <span class='op'>=&gt;</span> { ... };
    (<span class='ident'>SORT</span> [$(<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>def</span>:<span class='ident'>tt</span>)<span class='op'>*</span>]
        <span class='kw'>enum</span> [ $( $(<span class='attribute'>#[<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>emeta</span>:<span class='ident'>meta</span>]</span>)<span class='op'>*</span>
                  <span class='op'>=&gt;</span> <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>eitem</span>:<span class='ident'>ident</span> $(( $(<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>etyp</span>:<span class='ident'>ty</span>),<span class='op'>*</span> ))<span class='op'>*</span> )<span class='op'>*</span> ]
        <span class='ident'>items</span> [ $( <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>iitem</span>:<span class='ident'>ident</span> $(( $(<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>ivar</span>:<span class='ident'>ident</span> : <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>ityp</span>:<span class='ident'>ty</span>),<span class='op'>*</span> ))<span class='op'>*</span>
                                { $(<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>ifuncs</span>:<span class='ident'>tt</span>)<span class='op'>*</span> } )<span class='op'>*</span> ]
        <span class='ident'>buf</span> [ $( <span class='attribute'>#[<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>bmeta</span>:<span class='ident'>meta</span>]</span> )<span class='op'>*</span>
                 <span class='op'>=&gt;</span> <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>bitem</span>:<span class='ident'>ident</span> $(( $(<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>bvar</span>:<span class='ident'>ident</span> : <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>btyp</span>:<span class='ident'>ty</span>),<span class='op'>*</span> ))<span class='op'>*</span> ]
        <span class='ident'>queue</span> [ { $(<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>qfuncs</span>:<span class='ident'>tt</span>)<span class='op'>*</span> } $(<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>tail</span>:<span class='ident'>tt</span>)<span class='op'>*</span> ]
    ) <span class='op'>=&gt;</span> { ... };
    (<span class='ident'>SORT</span> [$(<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>def</span>:<span class='ident'>tt</span>)<span class='op'>*</span>]
        <span class='kw'>enum</span> [ $( $(<span class='attribute'>#[<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>emeta</span>:<span class='ident'>meta</span>]</span>)<span class='op'>*</span>
                  <span class='op'>=&gt;</span> <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>eitem</span>:<span class='ident'>ident</span> $(( $(<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>etyp</span>:<span class='ident'>ty</span>),<span class='op'>*</span> ))<span class='op'>*</span> )<span class='op'>*</span> ]
        <span class='ident'>items</span> [ $( <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>iitem</span>:<span class='ident'>ident</span> $(( $(<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>ivar</span>:<span class='ident'>ident</span> : <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>ityp</span>:<span class='ident'>ty</span>),<span class='op'>*</span> ))<span class='op'>*</span>
                                { $(<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>ifuncs</span>:<span class='ident'>tt</span>)<span class='op'>*</span> } )<span class='op'>*</span> ]
        <span class='ident'>buf</span> [ $( <span class='attribute'>#[<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>bmeta</span>:<span class='ident'>meta</span>]</span> )<span class='op'>*</span>
                 <span class='op'>=&gt;</span> <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>bitem</span>:<span class='ident'>ident</span> $(( $(<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>bvar</span>:<span class='ident'>ident</span> : <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>btyp</span>:<span class='ident'>ty</span>),<span class='op'>*</span> ))<span class='op'>*</span> ]
        <span class='ident'>queue</span> [ <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>qitem</span>:<span class='ident'>ident</span> $(<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>tail</span>:<span class='ident'>tt</span>)<span class='op'>*</span> ]
    ) <span class='op'>=&gt;</span> { ... };
    (<span class='ident'>SORT</span> [$(<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>def</span>:<span class='ident'>tt</span>)<span class='op'>*</span>]
        <span class='kw'>enum</span> [ $( $(<span class='attribute'>#[<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>emeta</span>:<span class='ident'>meta</span>]</span>)<span class='op'>*</span>
                  <span class='op'>=&gt;</span> <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>eitem</span>:<span class='ident'>ident</span> $(( $(<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>etyp</span>:<span class='ident'>ty</span>),<span class='op'>*</span> ))<span class='op'>*</span> )<span class='op'>*</span> ]
        <span class='ident'>items</span> [ $( <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>iitem</span>:<span class='ident'>ident</span> $(( $(<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>ivar</span>:<span class='ident'>ident</span> : <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>ityp</span>:<span class='ident'>ty</span>),<span class='op'>*</span> ))<span class='op'>*</span>
                                { $(<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>ifuncs</span>:<span class='ident'>tt</span>)<span class='op'>*</span> } )<span class='op'>*</span> ]
        <span class='ident'>buf</span> [ $( <span class='attribute'>#[<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>bmeta</span>:<span class='ident'>meta</span>]</span> )<span class='op'>*</span>
            <span class='op'>=&gt;</span> <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>bitem</span>:<span class='ident'>ident</span> $(( $(<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>bvar</span>:<span class='ident'>ident</span> : <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>btyp</span>:<span class='ident'>ty</span>),<span class='op'>*</span> ))<span class='op'>*</span> ]
        <span class='ident'>queue</span> [ ]
    ) <span class='op'>=&gt;</span> { ... };
    (<span class='ident'>IMPLEMENTATIONS</span>
        <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>name</span>:<span class='ident'>ident</span> {
            $(
                <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>item</span>:<span class='ident'>ident</span> $( ( $(<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>var</span>:<span class='ident'>ident</span> : <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>typ</span>:<span class='ident'>ty</span>),<span class='op'>*</span> ) )<span class='op'>*</span> { $(<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>funcs</span>:<span class='ident'>tt</span>)<span class='op'>*</span> }
            )<span class='op'>*</span>
        }
    ) <span class='op'>=&gt;</span> { ... };
    (<span class='ident'>FIND_DISPLAY_IMPL</span> <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>item</span>:<span class='ident'>ident</span> <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>me</span>:<span class='ident'>ident</span> <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>fmt</span>:<span class='ident'>ident</span>
        [ $( ( $(<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>var</span>:<span class='ident'>ident</span>)<span class='op'>*</span> ) )<span class='op'>*</span> ]
        { <span class='ident'>display</span>($(<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>exprs</span>:<span class='ident'>tt</span>)<span class='op'>*</span>) $(<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>tail</span>:<span class='ident'>tt</span>)<span class='op'>*</span> }
    ) <span class='op'>=&gt;</span> { ... };
    (<span class='ident'>FIND_DISPLAY_IMPL</span> <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>item</span>:<span class='ident'>ident</span> <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>me</span>:<span class='ident'>ident</span> <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>fmt</span>:<span class='ident'>ident</span>
        [ $( ( $(<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>var</span>:<span class='ident'>ident</span>)<span class='op'>*</span> ) )<span class='op'>*</span> ]
        { <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>t</span>:<span class='ident'>tt</span> $(<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>tail</span>:<span class='ident'>tt</span>)<span class='op'>*</span> }
    ) <span class='op'>=&gt;</span> { ... };
    (<span class='ident'>FIND_DISPLAY_IMPL</span> <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>item</span>:<span class='ident'>ident</span> <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>me</span>:<span class='ident'>ident</span> <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>fmt</span>:<span class='ident'>ident</span>
        [ $( ( $(<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>var</span>:<span class='ident'>ident</span>)<span class='op'>*</span> ) )<span class='op'>*</span> ]
        { }
    ) <span class='op'>=&gt;</span> { ... };
    (<span class='ident'>FIND_DESCRIPTION_IMPL</span> <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>item</span>:<span class='ident'>ident</span> <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>me</span>:<span class='ident'>ident</span> <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>fmt</span>:<span class='ident'>ident</span>
        [ $( ( $(<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>var</span>:<span class='ident'>ident</span>)<span class='op'>*</span> ) )<span class='op'>*</span> ]
        { <span class='ident'>description</span>(<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>expr</span>:<span class='ident'>expr</span>) $(<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>tail</span>:<span class='ident'>tt</span>)<span class='op'>*</span> }
    ) <span class='op'>=&gt;</span> { ... };
    (<span class='ident'>FIND_DESCRIPTION_IMPL</span> <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>item</span>:<span class='ident'>ident</span> <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>me</span>:<span class='ident'>ident</span> <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>fmt</span>:<span class='ident'>ident</span>
        [ $( ( $(<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>var</span>:<span class='ident'>ident</span>)<span class='op'>*</span> ) )<span class='op'>*</span> ]
        { <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>t</span>:<span class='ident'>tt</span> $(<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>tail</span>:<span class='ident'>tt</span>)<span class='op'>*</span> }
    ) <span class='op'>=&gt;</span> { ... };
    (<span class='ident'>FIND_DESCRIPTION_IMPL</span> <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>item</span>:<span class='ident'>ident</span> <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>me</span>:<span class='ident'>ident</span> <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>fmt</span>:<span class='ident'>ident</span>
        [ $( ( $(<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>var</span>:<span class='ident'>ident</span>)<span class='op'>*</span> ) )<span class='op'>*</span> ]
        { }
    ) <span class='op'>=&gt;</span> { ... };
    (<span class='ident'>FIND_CAUSE_IMPL</span> <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>item</span>:<span class='ident'>ident</span>
        [ $( ( $(<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>var</span>:<span class='ident'>ident</span>)<span class='op'>*</span> ) )<span class='op'>*</span> ]
        { <span class='ident'>cause</span>(<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>expr</span>:<span class='ident'>expr</span>) $(<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>tail</span>:<span class='ident'>tt</span>)<span class='op'>*</span> }
    ) <span class='op'>=&gt;</span> { ... };
    (<span class='ident'>FIND_CAUSE_IMPL</span> <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>item</span>:<span class='ident'>ident</span>
        [ $( ( $(<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>var</span>:<span class='ident'>ident</span>)<span class='op'>*</span> ) )<span class='op'>*</span> ]
        { <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>t</span>:<span class='ident'>tt</span> $(<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>tail</span>:<span class='ident'>tt</span>)<span class='op'>*</span> }
    ) <span class='op'>=&gt;</span> { ... };
    (<span class='ident'>FIND_CAUSE_IMPL</span> <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>item</span>:<span class='ident'>ident</span>
        [ $( ( $(<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>var</span>:<span class='ident'>ident</span>)<span class='op'>*</span> ) )<span class='op'>*</span> ]
        { }
    ) <span class='op'>=&gt;</span> { ... };
    (<span class='ident'>FIND_FROM_IMPL</span> <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>name</span>:<span class='ident'>ident</span> <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>item</span>:<span class='ident'>ident</span>
        [ $( ( $(<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>var</span>:<span class='ident'>ident</span> : <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>typ</span>:<span class='ident'>ty</span>)<span class='op'>*</span> ) )<span class='op'>*</span> ]
        { <span class='ident'>from</span>() $(<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>tail</span>:<span class='ident'>tt</span>)<span class='op'>*</span> }
    ) <span class='op'>=&gt;</span> { ... };
    (<span class='ident'>FIND_FROM_IMPL</span> <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>name</span>:<span class='ident'>ident</span> <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>item</span>:<span class='ident'>ident</span>
        [ ]
        { <span class='ident'>from</span>(<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>ftyp</span>:<span class='ident'>ty</span>) $(<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>tail</span>:<span class='ident'>tt</span>)<span class='op'>*</span> }
    ) <span class='op'>=&gt;</span> { ... };
    (<span class='ident'>FIND_FROM_IMPL</span> <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>name</span>:<span class='ident'>ident</span> <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>item</span>:<span class='ident'>ident</span>
        [ $( ( $(<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>var</span>:<span class='ident'>ident</span> : <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>typ</span>:<span class='ident'>ty</span>)<span class='op'>*</span> ) )<span class='op'>*</span> ]
        { <span class='ident'>from</span>(<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>fvar</span>:<span class='ident'>ident</span> : <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>ftyp</span>:<span class='ident'>ty</span>) <span class='op'>-&gt;</span> ($(<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>expr</span>:<span class='ident'>expr</span>),<span class='op'>*</span>) $(<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>tail</span>:<span class='ident'>tt</span>)<span class='op'>*</span> }
    ) <span class='op'>=&gt;</span> { ... };
    (<span class='ident'>FIND_FROM_IMPL</span> <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>name</span>:<span class='ident'>ident</span> <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>item</span>:<span class='ident'>ident</span>
        [ $( ( $(<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>var</span>:<span class='ident'>ident</span> : <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>typ</span>:<span class='ident'>ty</span>)<span class='op'>*</span> ) )<span class='op'>*</span> ]
        { <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>t</span>:<span class='ident'>tt</span> $(<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>tail</span>:<span class='ident'>tt</span>)<span class='op'>*</span> }
    ) <span class='op'>=&gt;</span> { ... };
    (<span class='ident'>FIND_FROM_IMPL</span> <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>name</span>:<span class='ident'>ident</span> <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>item</span>:<span class='ident'>ident</span>
        [ $( ( $(<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>var</span>:<span class='ident'>ident</span> : <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>typ</span>:<span class='ident'>ty</span>)<span class='op'>*</span> ) )<span class='op'>*</span> ]
        { }
    ) <span class='op'>=&gt;</span> { ... };
    (<span class='ident'>ERROR_CHECK</span> <span class='ident'>display</span>($(<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>exprs</span>:<span class='ident'>tt</span>)<span class='op'>*</span>) $(<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>tail</span>:<span class='ident'>tt</span>)<span class='op'>*</span>) <span class='op'>=&gt;</span> { ... };
    (<span class='ident'>ERROR_CHECK</span> <span class='ident'>description</span>(<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>expr</span>:<span class='ident'>expr</span>) $(<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>tail</span>:<span class='ident'>tt</span>)<span class='op'>*</span>) <span class='op'>=&gt;</span> { ... };
    (<span class='ident'>ERROR_CHECK</span> <span class='ident'>cause</span>(<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>expr</span>:<span class='ident'>expr</span>) $(<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>tail</span>:<span class='ident'>tt</span>)<span class='op'>*</span>) <span class='op'>=&gt;</span> { ... };
    (<span class='ident'>ERROR_CHECK</span> <span class='ident'>from</span>() $(<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>tail</span>:<span class='ident'>tt</span>)<span class='op'>*</span>) <span class='op'>=&gt;</span> { ... };
    (<span class='ident'>ERROR_CHECK</span> <span class='ident'>from</span>(<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>ftyp</span>:<span class='ident'>ty</span>) $(<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>tail</span>:<span class='ident'>tt</span>)<span class='op'>*</span>) <span class='op'>=&gt;</span> { ... };
    (<span class='ident'>ERROR_CHECK</span> <span class='ident'>from</span>(<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>fvar</span>:<span class='ident'>ident</span> : <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>ftyp</span>:<span class='ident'>ty</span>) <span class='op'>-&gt;</span> ($(<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>e</span>:<span class='ident'>expr</span>),<span class='op'>*</span>) $(<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>tail</span>:<span class='ident'>tt</span>)<span class='op'>*</span>) <span class='op'>=&gt;</span> { ... };
    (<span class='ident'>ERROR_CHECK</span>) <span class='op'>=&gt;</span> { ... };
}</pre>
<div class='docblock'><p>Main macro that does all the work</p>
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