grammars/json.svg

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<style type="text/css">
svg.railroad {
background-color: hsl(30, 20%, 95%);
background-size: 15px 15px;
background-image: linear-gradient(to right, rgba(30, 30, 30, .05) 1px, transparent 1px),
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svg.railroad rect.railroad_canvas {
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fill: none;
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svg.railroad path {
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stroke: black;
fill: none;
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svg.railroad .debug {
stroke-width: 1px;
stroke: red;
}

svg.railroad text {
font: 14px monospace;
text-anchor: middle;
}

svg.railroad .nonterminal text {
font-weight: bold;
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svg.railroad text.comment {
font: italic 12px monospace;
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svg.railroad rect {
stroke-width: 3px;
stroke: black;
fill:hsl(-290, 70%, 90%);
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stroke: grey;
stroke-dasharray: 5px;
fill:rgba(90, 90, 150, .1);
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<rect class="railroad_canvas" height="100%" width="100%"/>
<g class="verticalgrid">
<g class="verticalgrid">
<text class="comment" x="29" y="25">
json</text>
<g class="sequence">
<path d=" M 10 53 a 5 5 0 0 1 5 -5 a 5 5 0 0 1 5 5 a 5 5 0 0 1 -5 5 a 5 5 0 0 1 -5 -5 m 10 0 h 5"/>
<g class="sequence">
<g class="nonterminal">
<rect height="22" width="44" x="35" y="42"/>
<text x="57" y="58">
SOI</text>
</g>
<g class="nonterminal">
<rect height="22" width="60" x="89" y="42"/>
<text x="119" y="58">
value</text>
</g>
<g class="nonterminal">
<rect height="22" width="44" x="159" y="42"/>
<text x="181" y="58">
EOI</text>
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<path d=" M 79 53 h 10"/>
<path d=" M 149 53 h 10"/>
</g>
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</g>
<text class="comment" x="176" y="91">
/// Matches object, e.g.: `{ &quot;foo&quot;: &quot;bar&quot; }`</text>
<text class="comment" x="50" y="123">
/// Foobar</text>
<g class="verticalgrid">
<text class="comment" x="36" y="155">
object</text>
<g class="sequence">
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<g class="choice">
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<g class="sequence">
<g class="terminal">
<rect height="22" rx="10" ry="10" width="44" x="59" y="172"/>
<text x="81" y="188">
&quot;{&quot;</text>
</g>
<g class="nonterminal">
<rect height="22" width="52" x="113" y="172"/>
<text x="139" y="188">
pair</text>
</g>
<g class="choice">
<path d=" M 175 183 h 24 m 0 0 h 154 m -74 0 l -5 -5 m 0 10 l 5 -5 m 74 0"/>
<g/>
<path d=" M 175 183 a 12 12 0 0 1 12 12 v 0 m 154 0 v 0 a 12 12 0 0 1 12 -12"/>
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<g class="repeat">
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<g/>
<g class="sequence">
<g class="terminal">
<rect height="22" rx="10" ry="10" width="44" x="211" y="196"/>
<text x="233" y="212">
&quot;,&quot;</text>
</g>
<g class="nonterminal">
<rect height="22" width="52" x="265" y="196"/>
<text x="291" y="212">
pair</text>
</g>
<path d=" M 255 207 h 10"/>
</g>
</g>
</g>
<g class="terminal">
<rect height="22" rx="10" ry="10" width="44" x="363" y="172"/>
<text x="385" y="188">
&quot;}&quot;</text>
</g>
<path d=" M 103 183 h 10"/>
<path d=" M 165 183 h 10"/>
<path d=" M 353 183 h 10"/>
</g>
<path d=" M 35 183 a 12 12 0 0 1 12 12 v 46 m 372 0 v -46 a 12 12 0 0 1 12 -12"/>
<path d=" M 47 241 v 0 a 12 12 0 0 0 12 12 m 98 0 h 250 m -122 0 l -5 -5 m 0 10 l 5 -5 m 122 0 a 12 12 0 0 0 12 -12 v 0"/>
<g class="sequence">
<g class="terminal">
<rect height="22" rx="10" ry="10" width="44" x="59" y="242"/>
<text x="81" y="258">
&quot;{&quot;</text>
</g>
<g class="terminal">
<rect height="22" rx="10" ry="10" width="44" x="113" y="242"/>
<text x="135" y="258">
&quot;}&quot;</text>
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<path d=" M 103 253 h 10"/>
</g>
</g>
<path d=" M 441 183 h 5 a 5 5 0 0 1 5 -5 a 5 5 0 0 1 5 5 a 5 5 0 0 1 -5 5 a 5 5 0 0 1 -5 -5"/>
<path d=" M 25 183 h 10"/>
<path d=" M 431 183 h 10"/>
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</g>
<g class="verticalgrid">
<text class="comment" x="29" y="291">
pair</text>
<g class="sequence">
<path d=" M 10 319 a 5 5 0 0 1 5 -5 a 5 5 0 0 1 5 5 a 5 5 0 0 1 -5 5 a 5 5 0 0 1 -5 -5 m 10 0 h 5"/>
<g class="sequence">
<g class="nonterminal">
<rect height="22" width="68" x="35" y="308"/>
<text x="69" y="324">
string</text>
</g>
<g class="terminal">
<rect height="22" rx="10" ry="10" width="44" x="113" y="308"/>
<text x="135" y="324">
&quot;:&quot;</text>
</g>
<g class="nonterminal">
<rect height="22" width="60" x="167" y="308"/>
<text x="197" y="324">
value</text>
</g>
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<path d=" M 157 319 h 10"/>
</g>
<path d=" M 237 319 h 5 a 5 5 0 0 1 5 -5 a 5 5 0 0 1 5 5 a 5 5 0 0 1 -5 5 a 5 5 0 0 1 -5 -5"/>
<path d=" M 25 319 h 10"/>
<path d=" M 227 319 h 10"/>
</g>
</g>
<g class="verticalgrid">
<text class="comment" x="32" y="357">
array</text>
<g class="sequence">
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<g class="choice">
<path d=" M 35 385 h 24 m 364 0 h 24"/>
<g class="sequence">
<g class="terminal">
<rect height="22" rx="10" ry="10" width="44" x="59" y="374"/>
<text x="81" y="390">
&quot;[&quot;</text>
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<g class="nonterminal">
<rect height="22" width="60" x="113" y="374"/>
<text x="143" y="390">
value</text>
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<g class="choice">
<path d=" M 183 385 h 24 m 0 0 h 162 m -78 0 l -5 -5 m 0 10 l 5 -5 m 78 0"/>
<g/>
<path d=" M 183 385 a 12 12 0 0 1 12 12 v 0 m 162 0 v 0 a 12 12 0 0 1 12 -12"/>
<path d=" M 195 397 v 0 a 12 12 0 0 0 12 12 m 138 0 h 0 a 12 12 0 0 0 12 -12 v 0"/>
<g class="repeat">
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<g class="sequence">
<g class="terminal">
<rect height="22" rx="10" ry="10" width="44" x="219" y="398"/>
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&quot;,&quot;</text>
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<g class="nonterminal">
<rect height="22" width="60" x="273" y="398"/>
<text x="303" y="414">
value</text>
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<g class="terminal">
<rect height="22" rx="10" ry="10" width="44" x="379" y="374"/>
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&quot;]&quot;</text>
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<path d=" M 103 385 h 10"/>
<path d=" M 173 385 h 10"/>
<path d=" M 369 385 h 10"/>
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<path d=" M 35 385 a 12 12 0 0 1 12 12 v 46 m 388 0 v -46 a 12 12 0 0 1 12 -12"/>
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<g class="sequence">
<g class="terminal">
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<text x="81" y="460">
&quot;[&quot;</text>
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<g class="terminal">
<rect height="22" rx="10" ry="10" width="44" x="113" y="444"/>
<text x="135" y="460">
&quot;]&quot;</text>
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</g>
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<path d=" M 457 385 h 5 a 5 5 0 0 1 5 -5 a 5 5 0 0 1 5 5 a 5 5 0 0 1 -5 5 a 5 5 0 0 1 -5 -5"/>
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<path d=" M 447 385 h 10"/>
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<text class="comment" x="95" y="493">
//////////////////////</text>
<text class="comment" x="260" y="525">
/// Matches value, e.g.: `&quot;foo&quot;`, `42`, `true`, `null`, `[]`, `{}`.</text>
<text class="comment" x="95" y="557">
//////////////////////</text>
<g class="verticalgrid">
<text class="comment" x="32" y="589">
value</text>
<g class="sequence">
<path d=" M 10 617 a 5 5 0 0 1 5 -5 a 5 5 0 0 1 5 5 a 5 5 0 0 1 -5 5 a 5 5 0 0 1 -5 -5 m 10 0 h 5"/>
<g class="choice">
<path d=" M 35 617 h 24 m 68 0 h 24"/>
<g class="nonterminal">
<rect height="22" width="68" x="59" y="606"/>
<text x="93" y="622">
string</text>
</g>
<path d=" M 35 617 a 12 12 0 0 1 12 12 v 9 m 92 0 v -9 a 12 12 0 0 1 12 -12"/>
<path d=" M 47 638 v 33 m 92 0 v -33"/>
<path d=" M 47 671 v 33 m 92 0 v -33"/>
<path d=" M 47 704 v 33 m 92 0 v -33"/>
<path d=" M 47 737 v 33 m 92 0 v -33"/>
<path d=" M 47 638 v 0 a 12 12 0 0 0 12 12 m 68 0 h 0 a 12 12 0 0 0 12 -12 v 0"/>
<g class="nonterminal">
<rect height="22" width="68" x="59" y="639"/>
<text x="93" y="655">
number</text>
</g>
<path d=" M 47 671 v 0 a 12 12 0 0 0 12 12 m 68 0 h 0 a 12 12 0 0 0 12 -12 v 0"/>
<g class="nonterminal">
<rect height="22" width="68" x="59" y="672"/>
<text x="93" y="688">
object</text>
</g>
<path d=" M 47 704 v 0 a 12 12 0 0 0 12 12 m 60 0 h 8 a 12 12 0 0 0 12 -12 v 0"/>
<g class="nonterminal">
<rect height="22" width="60" x="59" y="705"/>
<text x="89" y="721">
array</text>
</g>
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<g class="nonterminal">
<rect height="22" width="52" x="59" y="738"/>
<text x="85" y="754">
bool</text>
</g>
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<g class="nonterminal">
<rect height="22" width="52" x="59" y="771"/>
<text x="85" y="787">
null</text>
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</g>
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<path d=" M 25 617 h 10"/>
<path d=" M 151 617 h 10"/>
</g>
</g>
<g class="verticalgrid">
<text class="comment" x="67" y="820">
string (atomic)</text>
<g class="sequence">
<path d=" M 10 848 a 5 5 0 0 1 5 -5 a 5 5 0 0 1 5 5 a 5 5 0 0 1 -5 5 a 5 5 0 0 1 -5 -5 m 10 0 h 5"/>
<g class="sequence">
<g class="terminal">
<rect height="22" rx="10" ry="10" width="52" x="35" y="837"/>
<text x="61" y="853">
&quot;\&quot;&quot;</text>
</g>
<g class="nonterminal">
<rect height="22" width="60" x="97" y="837"/>
<text x="127" y="853">
inner</text>
</g>
<g class="terminal">
<rect height="22" rx="10" ry="10" width="52" x="167" y="837"/>
<text x="193" y="853">
&quot;\&quot;&quot;</text>
</g>
<path d=" M 87 848 h 10"/>
<path d=" M 157 848 h 10"/>
</g>
<path d=" M 229 848 h 5 a 5 5 0 0 1 5 -5 a 5 5 0 0 1 5 5 a 5 5 0 0 1 -5 5 a 5 5 0 0 1 -5 -5"/>
<path d=" M 25 848 h 10"/>
<path d=" M 219 848 h 10"/>
</g>
</g>
<g class="verticalgrid">
<text class="comment" x="64" y="886">
inner (atomic)</text>
<g class="sequence">
<path d=" M 10 927 a 5 5 0 0 1 5 -5 a 5 5 0 0 1 5 5 a 5 5 0 0 1 -5 5 a 5 5 0 0 1 -5 -5 m 10 0 h 5"/>
<g class="sequence">
<g class="choice">
<path d=" M 35 927 h 24 m 0 0 h 289 m -141 0 l -5 -5 m 0 10 l 5 -5 m 141 0"/>
<g/>
<path d=" M 35 927 a 12 12 0 0 1 12 12 v 0 m 289 0 v 0 a 12 12 0 0 1 12 -12"/>
<path d=" M 47 939 v 35 a 12 12 0 0 0 12 12 m 265 0 h 0 a 12 12 0 0 0 12 -12 v -35"/>
<g class="repeat">
<path d=" M 59 986 h 12 m 241 0 h 12 m -12 0 a 12 12 0 0 1 12 12 v 38 a 12 12 0 0 1 -12 12 m 0 0 h -241 m 123 0 l 5 -5 m 0 10 l -5 -5 m -123 0 a 12 12 0 0 1 -12 -12 v -38 a 12 12 0 0 1 12 -12"/>
<g/>
<g class="sequence">
<g class="labeledbox">
<rect height="99" width="187" x="71" y="939"/>
<path d=" M 71 986 h 8 m 100 0 h 79 m -36 0 l -5 -5 m 0 10 l 5 -5 m 36 0"/>
<text class="comment" x="164" y="962">
Lookahead: Can&#x27;t match</text>
<g class="choice">
<path d=" M 79 986 h 24 m 52 0 h 24"/>
<g class="terminal">
<rect height="22" rx="10" ry="10" width="52" x="103" y="975"/>
<text x="129" y="991">
&quot;\&quot;&quot;</text>
</g>
<path d=" M 79 986 a 12 12 0 0 1 12 12 v 9 m 76 0 v -9 a 12 12 0 0 1 12 -12"/>
<path d=" M 91 1007 v 0 a 12 12 0 0 0 12 12 m 52 0 h 0 a 12 12 0 0 0 12 -12 v 0"/>
<g class="terminal">
<rect height="22" rx="10" ry="10" width="52" x="103" y="1008"/>
<text x="129" y="1024">
&quot;\\&quot;</text>
</g>
</g>
</g>
<g class="nonterminal">
<rect height="22" width="44" x="268" y="975"/>
<text x="290" y="991">
ANY</text>
</g>
<path d=" M 258 986 h 10"/>
</g>
</g>
</g>
<g class="optional">
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<g class="sequence">
<g class="nonterminal">
<rect height="22" width="68" x="382" y="916"/>
<text x="416" y="932">
escape</text>
</g>
<g class="nonterminal">
<rect height="22" width="60" x="460" y="916"/>
<text x="490" y="932">
inner</text>
</g>
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</g>
</g>
<path d=" M 348 927 h 10"/>
</g>
<path d=" M 554 927 h 5 a 5 5 0 0 1 5 -5 a 5 5 0 0 1 5 5 a 5 5 0 0 1 -5 5 a 5 5 0 0 1 -5 -5"/>
<path d=" M 25 927 h 10"/>
<path d=" M 544 927 h 10"/>
</g>
</g>
<g class="verticalgrid">
<text class="comment" x="67" y="1075">
escape (atomic)</text>
<g class="sequence">
<path d=" M 10 1103 a 5 5 0 0 1 5 -5 a 5 5 0 0 1 5 5 a 5 5 0 0 1 -5 5 a 5 5 0 0 1 -5 -5 m 10 0 h 5"/>
<g class="sequence">
<g class="terminal">
<rect height="22" rx="10" ry="10" width="52" x="35" y="1092"/>
<text x="61" y="1108">
&quot;\\&quot;</text>
</g>
<g class="choice">
<path d=" M 97 1103 h 24 m 52 0 h 48"/>
<g class="terminal">
<rect height="22" rx="10" ry="10" width="52" x="121" y="1092"/>
<text x="147" y="1108">
&quot;\&quot;&quot;</text>
</g>
<path d=" M 97 1103 a 12 12 0 0 1 12 12 v 9 m 100 0 v -9 a 12 12 0 0 1 12 -12"/>
<path d=" M 109 1124 v 33 m 100 0 v -33"/>
<path d=" M 109 1157 v 33 m 100 0 v -33"/>
<path d=" M 109 1190 v 33 m 100 0 v -33"/>
<path d=" M 109 1223 v 33 m 100 0 v -33"/>
<path d=" M 109 1256 v 33 m 100 0 v -33"/>
<path d=" M 109 1289 v 33 m 100 0 v -33"/>
<path d=" M 109 1322 v 33 m 100 0 v -33"/>
<path d=" M 109 1124 v 0 a 12 12 0 0 0 12 12 m 52 0 h 24 a 12 12 0 0 0 12 -12 v 0"/>
<g class="terminal">
<rect height="22" rx="10" ry="10" width="52" x="121" y="1125"/>
<text x="147" y="1141">
&quot;\\&quot;</text>
</g>
<path d=" M 109 1157 v 0 a 12 12 0 0 0 12 12 m 44 0 h 32 a 12 12 0 0 0 12 -12 v 0"/>
<g class="terminal">
<rect height="22" rx="10" ry="10" width="44" x="121" y="1158"/>
<text x="143" y="1174">
&quot;/&quot;</text>
</g>
<path d=" M 109 1190 v 0 a 12 12 0 0 0 12 12 m 44 0 h 32 a 12 12 0 0 0 12 -12 v 0"/>
<g class="terminal">
<rect height="22" rx="10" ry="10" width="44" x="121" y="1191"/>
<text x="143" y="1207">
&quot;b&quot;</text>
</g>
<path d=" M 109 1223 v 0 a 12 12 0 0 0 12 12 m 44 0 h 32 a 12 12 0 0 0 12 -12 v 0"/>
<g class="terminal">
<rect height="22" rx="10" ry="10" width="44" x="121" y="1224"/>
<text x="143" y="1240">
&quot;f&quot;</text>
</g>
<path d=" M 109 1256 v 0 a 12 12 0 0 0 12 12 m 44 0 h 32 a 12 12 0 0 0 12 -12 v 0"/>
<g class="terminal">
<rect height="22" rx="10" ry="10" width="44" x="121" y="1257"/>
<text x="143" y="1273">
&quot;n&quot;</text>
</g>
<path d=" M 109 1289 v 0 a 12 12 0 0 0 12 12 m 44 0 h 32 a 12 12 0 0 0 12 -12 v 0"/>
<g class="terminal">
<rect height="22" rx="10" ry="10" width="44" x="121" y="1290"/>
<text x="143" y="1306">
&quot;r&quot;</text>
</g>
<path d=" M 109 1322 v 0 a 12 12 0 0 0 12 12 m 44 0 h 32 a 12 12 0 0 0 12 -12 v 0"/>
<g class="terminal">
<rect height="22" rx="10" ry="10" width="44" x="121" y="1323"/>
<text x="143" y="1339">
&quot;t&quot;</text>
</g>
<path d=" M 109 1355 v 0 a 12 12 0 0 0 12 12 m 76 0 h 0 a 12 12 0 0 0 12 -12 v 0"/>
<g class="nonterminal">
<rect height="22" width="76" x="121" y="1356"/>
<text x="159" y="1372">
unicode</text>
</g>
</g>
<path d=" M 87 1103 h 10"/>
</g>
<path d=" M 231 1103 h 5 a 5 5 0 0 1 5 -5 a 5 5 0 0 1 5 5 a 5 5 0 0 1 -5 5 a 5 5 0 0 1 -5 -5"/>
<path d=" M 25 1103 h 10"/>
<path d=" M 221 1103 h 10"/>
</g>
</g>
<g class="verticalgrid">
<text class="comment" x="71" y="1405">
unicode (atomic)</text>
<g class="sequence">
<path d=" M 10 1469 a 5 5 0 0 1 5 -5 a 5 5 0 0 1 5 5 a 5 5 0 0 1 -5 5 a 5 5 0 0 1 -5 -5 m 10 0 h 5"/>
<g class="sequence">
<g class="terminal">
<rect height="22" rx="10" ry="10" width="44" x="35" y="1458"/>
<text x="57" y="1474">
&quot;u&quot;</text>
</g>
<g class="labeledbox">
<rect height="79" width="180" x="89" y="1422"/>
<path d=" M 89 1469 h 8 m 164 0 h 8"/>
<text class="comment" x="158" y="1445">
Repeat 4 time(s)</text>
<g class="repeat">
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<g/>
<g class="nonterminal">
<rect height="22" width="140" x="109" y="1458"/>
<text x="179" y="1474">
ASCII_HEX_DIGIT</text>
</g>
</g>
</g>
<path d=" M 79 1469 h 10"/>
</g>
<path d=" M 279 1469 h 5 a 5 5 0 0 1 5 -5 a 5 5 0 0 1 5 5 a 5 5 0 0 1 -5 5 a 5 5 0 0 1 -5 -5"/>
<path d=" M 25 1469 h 10"/>
<path d=" M 269 1469 h 10"/>
</g>
</g>
<g class="verticalgrid">
<text class="comment" x="67" y="1528">
number (atomic)</text>
<g class="sequence">
<path d=" M 10 1581 a 5 5 0 0 1 5 -5 a 5 5 0 0 1 5 5 a 5 5 0 0 1 -5 5 a 5 5 0 0 1 -5 -5 m 10 0 h 5"/>
<g class="sequence">
<g class="optional">
<path d=" M 35 1581 h 24 m -24 0 a 12 12 0 0 0 12 -12 v 0 a 12 12 0 0 1 12 -12 h 44 a 12 12 0 0 1 12 12 v 0 a 12 12 0 0 0 12 12 h -24"/>
<g class="terminal">
<rect height="22" rx="10" ry="10" width="44" x="59" y="1570"/>
<text x="81" y="1586">
&quot;-&quot;</text>
</g>
</g>
<g class="nonterminal">
<rect height="22" width="44" x="137" y="1570"/>
<text x="159" y="1586">
int</text>
</g>
<g class="optional">
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<g class="choice">
<path d=" M 215 1581 h 24 m 288 0 h 24"/>
<g class="sequence">
<g class="terminal">
<rect height="22" rx="10" ry="10" width="44" x="239" y="1570"/>
<text x="261" y="1586">
&quot;.&quot;</text>
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ASCII_DIGIT</text>
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exp</text>
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<path d=" M 425 1581 h 10"/>
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exp</text>
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int (atomic)</text>
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<g class="terminal">
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&quot;0&quot;</text>
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<rect height="22" width="172" x="59" y="1715"/>
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ASCII_NONZERO_DIGIT</text>
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<g/>
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ASCII_DIGIT</text>
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exp (atomic)</text>
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<g class="choice">
<path d=" M 35 1842 h 24 m 44 0 h 24"/>
<g class="terminal">
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&quot;E&quot;</text>
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<g class="terminal">
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&quot;e&quot;</text>
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<g class="terminal">
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&quot;+&quot;</text>
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<path d=" M 173 1863 v 0 a 12 12 0 0 0 12 12 m 44 0 h 0 a 12 12 0 0 0 12 -12 v 0"/>
<g class="terminal">
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<text x="207" y="1880">
&quot;-&quot;</text>
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</g>
</g>
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ASCII_DIGIT</text>
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</g>
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<path d=" M 277 1842 h 10"/>
</g>
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<path d=" M 25 1842 h 10"/>
<path d=" M 419 1842 h 10"/>
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</g>
<g class="verticalgrid">
<text class="comment" x="29" y="1913">
bool</text>
<g class="sequence">
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<g class="terminal">
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&quot;true&quot;</text>
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<g class="terminal">
<rect height="22" rx="10" ry="10" width="76" x="59" y="1963"/>
<text x="97" y="1979">
&quot;false&quot;</text>
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</g>
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<path d=" M 25 1941 h 10"/>
<path d=" M 159 1941 h 10"/>
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</g>
<g class="verticalgrid">
<text class="comment" x="29" y="2012">
null</text>
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<g class="terminal">
<rect height="22" rx="10" ry="10" width="68" x="35" y="2029"/>
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&quot;null&quot;</text>
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<path d=" M 103 2040 h 10"/>
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</g>
<g class="verticalgrid">
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WHITESPACE (silent)</text>
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<g class="terminal">
<rect height="22" rx="10" ry="10" width="44" x="59" y="2095"/>
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&quot; &quot;</text>
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<path d=" M 47 2160 v 33 m 76 0 v -33"/>
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<g class="terminal">
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&quot;\t&quot;</text>
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<g class="terminal">
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&quot;\r&quot;</text>
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<g class="terminal">
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&quot;\n&quot;</text>
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