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<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt">Further reduction will require additional info about formatting. Actual list has very simple printers implementations:<o:p></o:p></span></p>
<p class="MsoNormal" style="background:white"><span style="font-family:"Courier New",serif;color:black">
</span><span style="font-family:"Courier New",serif;color:#336BDD">switch</span><span style="font-family:"Courier New",serif;color:black"> (node) {<o:p></o:p></span></p>
<p class="MsoNormal" style="background:white"><span style="font-family:"Courier New",serif;color:black">
</span><span style="font-family:"Courier New",serif;color:#336BDD">case</span><span style="font-family:"Courier New",serif;color:black">
<i>Value</i> v -><o:p></o:p></span></p>
<p class="MsoNormal" style="background:white"><span style="font-family:"Courier New",serif;color:black">
</span><span style="font-family:"Courier New",serif;color:#336BDD">case</span><span style="font-family:"Courier New",serif;color:black">
<i>ValueList</i> vl -><o:p></o:p></span></p>
<p class="MsoNormal" style="background:white"><span style="font-family:"Courier New",serif;color:black">
</span><span style="font-family:"Courier New",serif;color:#336BDD">case</span><span style="font-family:"Courier New",serif;color:black">
<i>Mapping</i> m <o:p></o:p></span></p>
<p class="MsoNormal" style="background:white"><span style="font-family:"Courier New",serif;color:black"> </span><span style="font-family:"Courier New",serif;color:#336BDD">case</span><span style="font-family:"Courier New",serif;color:black">
<i>BlockList</i> bl -><o:p></o:p></span></p>
<p class="MsoNormal" style="background:white"><span style="font-family:"Courier New",serif;color:black">
</span><span style="font-family:"Courier New",serif;color:#336BDD">case</span><span style="font-family:"Courier New",serif;color:black">
<i>BlockMapping</i> bm -><o:p></o:p></span></p>
<p class="MsoNormal" style="background:white"><span style="font-family:"Courier New",serif;color:black">
</span><span style="font-family:"Courier New",serif;color:#336BDD">case</span><span style="font-family:"Courier New",serif;color:black">
<i>Comment</i> c -><o:p></o:p></span></p>
<p class="MsoNormal" style="background:white"><span style="font-family:"Courier New",serif;color:black"> }<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt">Replacing all simple values with list of values will wrap everything into square brackets and significantly reduce user readability.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt">Or dynamic detection of single value in a list will destroy any schema for parsing.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt">Visual difference of rendered Mapping and BlockMapping is significant in all three formats.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt">The key here means a mapping key in YAML, object key in JSON and element or attribute name in XML, so it defines a key in the schemas.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt">BlockMapping renders as multi-line mapping in YAML, as multi-line object in JSON and as multi-line nested elements in XML.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt">While Mapping renders as single-line flow in YAML, as single-line object in JSON and as single element with attributes only in XML.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt">Dynamic detection by content will make the print very unstable and unfriendly for user reading (for example one method will be collapsed, while the other will expand).<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt">I don’t see much space for reduction without losing visual features.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt"><o:p></o:p></span></p>
<div>
<p class="MsoNormal" style="margin-left:36.0pt"><span style="font-size:11.0pt">On 25.07.2022 19:28, "Brian Goetz" <brian.goetz@oracle.com> wrote:<o:p></o:p></span></p>
</div>
<p class="MsoNormal" style="mso-margin-top-alt:0cm;margin-right:0cm;margin-bottom:12.0pt;margin-left:36.0pt">
<span style="font-size:11.0pt"><br>
</span><span style="font-size:13.5pt;font-family:"Courier New",serif">That's a good move. Can we push further? We have types here for mapping a key to a:<br>
<br>
- list of simple values<br>
- list of arbitrary fragments <br>
- list of printables<br>
- list of list of printable (blocklist)<br>
<br>
<br>
</span><span style="font-size:11.0pt"><o:p></o:p></span></p>
<div>
<p class="MsoNormal" style="margin-left:36.0pt"><span style="font-size:11.0pt">On 7/25/2022 1:20 PM, Adam Sotona wrote:<o:p></o:p></span></p>
</div>
<blockquote style="margin-top:5.0pt;margin-bottom:5.0pt">
<p class="MsoNormal" style="margin-left:36.0pt"><span lang="EN-US" style="font-size:11.0pt">Or maybe we could let the printer to auto-quote as needed by the actual value in the context of the actual format
</span><span lang="EN-US" style="font-size:11.0pt;font-family:"Apple Color Emoji"">😊</span><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:36.0pt"><span lang="EN-US" style="font-size:11.0pt">So yes, it can be reduced:</span><o:p></o:p></p>
<pre style="margin-left:108.0pt;background:white"><span style="color:#336BDD">public</span><span style="color:black"> </span><span style="color:#336BDD">sealed</span><span style="color:black"> </span><span style="color:#336BDD">interface</span><span style="color:black"> <b>Printable</b> {</span><o:p></o:p></pre>
<p class="MsoNormal" style="margin-left:108.0pt;background:white"><span style="font-family:"Courier New",serif;color:black"> </span><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:108.0pt;background:white"><span style="font-family:"Courier New",serif;color:black">
</span><span style="color:black">public</span><span style="font-family:"Courier New",serif;color:black"> String
<b>key</b>();</span><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:108.0pt;background:white"><span style="font-family:"Courier New",serif;color:black"> </span><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:108.0pt;background:white"><span style="font-family:"Courier New",serif;color:black">
</span><span style="color:black">public</span><span style="font-family:"Courier New",serif;color:black">
</span><span style="color:black">sealed</span><span style="font-family:"Courier New",serif;color:black">
</span><span style="color:black">interface</span><span style="font-family:"Courier New",serif;color:black">
<b><i>Fragment</i></b> </span><span style="font-family:"Courier New",serif;color:#336BDD">extends</span><span style="font-family:"Courier New",serif;color:black"> Printable {}</span><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:108.0pt;background:white"><span style="font-family:"Courier New",serif;color:black"> </span><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:108.0pt;background:white"><span style="font-family:"Courier New",serif;color:black">
</span><span style="color:black">public</span><span style="font-family:"Courier New",serif;color:black">
</span><span style="color:black">record</span><span style="font-family:"Courier New",serif;color:black">
<i>Value</i>(String </span><span style="font-family:"Courier New",serif;color:#CE54B8">key</span><span style="font-family:"Courier New",serif;color:black">,
<s>String</s> ConstantDesc </span><span style="color:black">value</span><span style="font-family:"Courier New",serif;color:black">)
</span><span style="color:black">implements</span><span style="font-family:"Courier New",serif;color:black">
<i>Fragment</i> {}</span><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:108.0pt;background:white"><span style="font-family:"Courier New",serif;color:black"> </span><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:108.0pt;background:white"><span style="font-family:"Courier New",serif;color:black">
</span><s><span style="color:black">public</span></s><s><span style="font-family:"Courier New",serif;color:black">
</span><span style="color:black">record</span></s><s><span style="font-family:"Courier New",serif;color:black">
<i>Quoted</i>(String </span></s><s><span style="font-family:"Courier New",serif;color:#CE54B8">key</span></s><s><span style="font-family:"Courier New",serif;color:black">, String
</span><span style="color:black">value</span></s><s><span style="font-family:"Courier New",serif;color:black">)
</span><span style="color:black">implements</span></s><s><span style="font-family:"Courier New",serif;color:black">
<i>Fragment</i> {}</span></s><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:108.0pt;background:white"><span style="font-family:"Courier New",serif;color:black"> </span><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:108.0pt;background:white"><span style="font-family:"Courier New",serif;color:black">
</span><s><span style="color:black">public</span></s><s><span style="font-family:"Courier New",serif;color:black">
</span><span style="color:black">record</span></s><s><span style="font-family:"Courier New",serif;color:black">
<i>Decimal</i>(String </span></s><s><span style="font-family:"Courier New",serif;color:#CE54B8">key</span></s><s><span style="font-family:"Courier New",serif;color:black">,
</span><span style="color:black">int</span></s><s><span style="font-family:"Courier New",serif;color:black">
</span><span style="color:black">value</span></s><s><span style="font-family:"Courier New",serif;color:black">)
</span><span style="color:black">implements</span></s><s><span style="font-family:"Courier New",serif;color:black">
<i>Fragment</i> {}</span></s><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:108.0pt;background:white"><span style="font-family:"Courier New",serif;color:black"> </span><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:108.0pt;background:white"><span style="font-family:"Courier New",serif;color:black">
</span><span style="color:black">public</span><span style="font-family:"Courier New",serif;color:black">
</span><span style="color:black">record</span><span style="font-family:"Courier New",serif;color:black">
<i>ValueList</i>(String </span><span style="font-family:"Courier New",serif;color:#CE54B8">key</span><span style="font-family:"Courier New",serif;color:black">, List<<s>String</s></span><span style="color:black">
</span><span style="font-family:"Courier New \;color\:black";color:black">ConstantDesc>
</span><span style="color:black">values</span><span style="font-family:"Courier New",serif;color:black">)
</span><span style="color:black">implements</span><span style="font-family:"Courier New",serif;color:black">
<i>Fragment</i> {}</span><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:108.0pt;background:white"><span style="font-family:"Courier New",serif;color:black"> </span><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:108.0pt;background:white"><span style="font-family:"Courier New",serif;color:black">
</span><s><span style="color:black">public</span></s><s><span style="font-family:"Courier New",serif;color:black">
</span><span style="color:black">record</span></s><s><span style="font-family:"Courier New",serif;color:black">
<i>QuotedList</i>(String </span></s><s><span style="font-family:"Courier New",serif;color:#CE54B8">key</span></s><s><span style="font-family:"Courier New",serif;color:black">, List<String>
</span><span style="color:black">values</span></s><s><span style="font-family:"Courier New",serif;color:black">)
</span><span style="color:black">implements</span></s><s><span style="font-family:"Courier New",serif;color:black">
<i>Fragment</i> {}</span></s><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:108.0pt;background:white"><span style="font-family:"Courier New",serif;color:black"> </span><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:108.0pt;background:white"><span style="font-family:"Courier New",serif;color:black">
</span><span style="color:black">public</span><span style="font-family:"Courier New",serif;color:black">
</span><span style="color:black">record</span><span style="font-family:"Courier New",serif;color:black">
<i>Mapping</i>(String </span><span style="font-family:"Courier New",serif;color:#CE54B8">key</span><span style="font-family:"Courier New",serif;color:black">, List<<i>Fragment</i>>
</span><span style="color:black">fragments</span><span style="font-family:"Courier New",serif;color:black">)
</span><span style="color:black">implements</span><span style="font-family:"Courier New",serif;color:black"> Printable {}</span><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:108.0pt;background:white"><span style="font-family:"Courier New",serif;color:black"> </span><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:108.0pt;background:white"><span style="font-family:"Courier New",serif;color:black">
</span><span style="color:black">public</span><span style="font-family:"Courier New",serif;color:black">
</span><span style="color:black">record</span><span style="font-family:"Courier New",serif;color:black">
<i>BlockMapping</i>(String </span><span style="font-family:"Courier New",serif;color:#CE54B8">key</span><span style="font-family:"Courier New",serif;color:black">, List<Printable>
</span><span style="color:black">printables</span><span style="font-family:"Courier New",serif;color:black">)
</span><span style="color:black">implements</span><span style="font-family:"Courier New",serif;color:black"> Printable {}</span><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:108.0pt;background:white"><span style="font-family:"Courier New",serif;color:black"> </span><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:108.0pt;background:white"><span style="font-family:"Courier New",serif;color:black">
</span><span style="color:black">public</span><span style="font-family:"Courier New",serif;color:black">
</span><span style="color:black">record</span><span style="font-family:"Courier New",serif;color:black">
<i>BlockList</i>(String </span><span style="font-family:"Courier New",serif;color:#CE54B8">key</span><span style="font-family:"Courier New",serif;color:black">, List<<i>BlockMapping</i>>
</span><span style="color:black">blockMappings</span><span style="font-family:"Courier New",serif;color:black">)
</span><span style="color:black">implements</span><span style="font-family:"Courier New",serif;color:black"> Printable {}</span><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:108.0pt;background:white"><span style="font-family:"Courier New",serif;color:black"> </span><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:108.0pt;background:white"><span style="font-family:"Courier New",serif;color:black">
</span><span style="color:black">public</span><span style="font-family:"Courier New",serif;color:black">
</span><span style="color:black">record</span><span style="font-family:"Courier New",serif;color:black">
<i>Comment</i>(String </span><span style="font-family:"Courier New",serif;color:#CE54B8">key</span><span style="font-family:"Courier New",serif;color:black">)
</span><span style="color:black">implements</span><span style="font-family:"Courier New",serif;color:black"> Printable {}</span><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:36.0pt"><span lang="EN-US" style="font-size:11.0pt"> </span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:0cm;margin-right:36.0pt;margin-bottom:5.0pt;margin-left:0cm">
<o:p> </o:p></p>
</blockquote>
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