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<div class="subTitle"><span class="packageLabelInType">Package</span>&nbsp;<a href="package-summary.html">org.apache.calcite.sql.parser</a></div>
<h2 title="Class Span" class="title">Class Span</h2>
</div>
<div class="contentContainer">
<ul class="inheritance">
<li>java.lang.Object</li>
<li>
<ul class="inheritance">
<li>org.apache.calcite.sql.parser.Span</li>
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<pre>public final class <span class="typeNameLabel">Span</span>
extends java.lang.Object</pre>
<div class="block">Builder for <a href="SqlParserPos.html" title="class in org.apache.calcite.sql.parser"><code>SqlParserPos</code></a>.
<p>Because it is mutable, it is convenient for keeping track of the
positions of the tokens that go into a non-terminal. It can be passed
into methods, which can add the positions of tokens consumed to it.
<p>Some patterns:
<ul>
<li><code>final Span s;</code> declaration of a Span at the top of a production
<li><code>s = span();</code> initializes s to a Span that includes the token we
just saw; very often occurs immediately after the first token in the
production
<li><code>s.end(this);</code> adds the most recent token to span s and evaluates
to a SqlParserPosition that spans from beginning to end; commonly used
when making a call to a function
<li><code>s.pos()</code> returns a position spanning all tokens in the list
<li><code>s.add(node);</code> adds a SqlNode's parser position to a span
<li><code>s.addAll(nodeList);</code> adds several SqlNodes' parser positions to
a span
<li><code>s = Span.of();</code> initializes s to an empty Span, not even
including the most recent token; rarely used
</ul></div>
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<caption><span>Fields</span><span class="tabEnd">&nbsp;</span></caption>
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<th class="colFirst" scope="col">Modifier and Type</th>
<th class="colSecond" scope="col">Field</th>
<th class="colLast" scope="col">Description</th>
</tr>
<tr class="altColor">
<td class="colFirst"><code>private java.util.List&lt;<a href="SqlParserPos.html" title="class in org.apache.calcite.sql.parser">SqlParserPos</a>&gt;</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#posList">posList</a></span></code></th>
<td class="colLast">&nbsp;</td>
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<td class="colFirst"><code>private </code></td>
<th class="colConstructorName" scope="row"><code><span class="memberNameLink"><a href="#%3Cinit%3E()">Span</a></span>()</code></th>
<td class="colLast">
<div class="block">Use one of the <a href="#of()"><code>of()</code></a> methods.</div>
</td>
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<th class="colSecond" scope="col">Method</th>
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<td class="colFirst"><code><a href="Span.html" title="class in org.apache.calcite.sql.parser">Span</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#add(org.apache.calcite.sql.parser.SqlAbstractParserImpl)">add</a></span>&#8203;(<a href="SqlAbstractParserImpl.html" title="class in org.apache.calcite.sql.parser">SqlAbstractParserImpl</a>&nbsp;parser)</code></th>
<td class="colLast">
<div class="block">Adds the position of the last token emitted by a parser to the list,
and returns this Span.</div>
</td>
</tr>
<tr id="i1" class="rowColor">
<td class="colFirst"><code><a href="Span.html" title="class in org.apache.calcite.sql.parser">Span</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#add(org.apache.calcite.sql.parser.SqlParserPos)">add</a></span>&#8203;(<a href="SqlParserPos.html" title="class in org.apache.calcite.sql.parser">SqlParserPos</a>&nbsp;pos)</code></th>
<td class="colLast">
<div class="block">Adds a position to the list,
and returns this Span.</div>
</td>
</tr>
<tr id="i2" class="altColor">
<td class="colFirst"><code><a href="Span.html" title="class in org.apache.calcite.sql.parser">Span</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#add(org.apache.calcite.sql.SqlNode)">add</a></span>&#8203;(<a href="../SqlNode.html" title="class in org.apache.calcite.sql">SqlNode</a>&nbsp;n)</code></th>
<td class="colLast">
<div class="block">Adds a node's position to the list,
and returns this Span.</div>
</td>
</tr>
<tr id="i3" class="rowColor">
<td class="colFirst"><code><a href="Span.html" title="class in org.apache.calcite.sql.parser">Span</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#addAll(java.lang.Iterable)">addAll</a></span>&#8203;(java.lang.Iterable&lt;? extends <a href="../SqlNode.html" title="class in org.apache.calcite.sql">SqlNode</a>&gt;&nbsp;nodes)</code></th>
<td class="colLast">
<div class="block">Adds the positions of a collection of nodes to the list,
and returns this Span.</div>
</td>
</tr>
<tr id="i4" class="altColor">
<td class="colFirst"><code><a href="Span.html" title="class in org.apache.calcite.sql.parser">Span</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#addIf(org.apache.calcite.sql.SqlNode)">addIf</a></span>&#8203;(<a href="../SqlNode.html" title="class in org.apache.calcite.sql">SqlNode</a>&nbsp;n)</code></th>
<td class="colLast">
<div class="block">Adds a node's position to the list if the node is not null,
and returns this Span.</div>
</td>
</tr>
<tr id="i5" class="rowColor">
<td class="colFirst"><code><a href="Span.html" title="class in org.apache.calcite.sql.parser">Span</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#clear()">clear</a></span>()</code></th>
<td class="colLast">
<div class="block">Clears the contents of this Span, and returns this Span.</div>
</td>
</tr>
<tr id="i6" class="altColor">
<td class="colFirst"><code><a href="SqlParserPos.html" title="class in org.apache.calcite.sql.parser">SqlParserPos</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#end(org.apache.calcite.sql.parser.SqlAbstractParserImpl)">end</a></span>&#8203;(<a href="SqlAbstractParserImpl.html" title="class in org.apache.calcite.sql.parser">SqlAbstractParserImpl</a>&nbsp;parser)</code></th>
<td class="colLast">
<div class="block">Adds the position of the last token emitted by a parser to the list,
and returns a position that covers the whole range.</div>
</td>
</tr>
<tr id="i7" class="rowColor">
<td class="colFirst"><code><a href="SqlParserPos.html" title="class in org.apache.calcite.sql.parser">SqlParserPos</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#end(org.apache.calcite.sql.SqlNode)">end</a></span>&#8203;(<a href="../SqlNode.html" title="class in org.apache.calcite.sql">SqlNode</a>&nbsp;n)</code></th>
<td class="colLast">
<div class="block">Adds a node's position to the list,
and returns a position that covers the whole range.</div>
</td>
</tr>
<tr id="i8" class="altColor">
<td class="colFirst"><code>static <a href="Span.html" title="class in org.apache.calcite.sql.parser">Span</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#of()">of</a></span>()</code></th>
<td class="colLast">
<div class="block">Creates an empty Span.</div>
</td>
</tr>
<tr id="i9" class="rowColor">
<td class="colFirst"><code>static <a href="Span.html" title="class in org.apache.calcite.sql.parser">Span</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#of(java.util.Collection)">of</a></span>&#8203;(java.util.Collection&lt;? extends <a href="../SqlNode.html" title="class in org.apache.calcite.sql">SqlNode</a>&gt;&nbsp;nodes)</code></th>
<td class="colLast">
<div class="block">Creates a Span of a list of nodes.</div>
</td>
</tr>
<tr id="i10" class="altColor">
<td class="colFirst"><code>static <a href="Span.html" title="class in org.apache.calcite.sql.parser">Span</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#of(org.apache.calcite.sql.parser.SqlParserPos)">of</a></span>&#8203;(<a href="SqlParserPos.html" title="class in org.apache.calcite.sql.parser">SqlParserPos</a>&nbsp;p)</code></th>
<td class="colLast">
<div class="block">Creates a Span with one position.</div>
</td>
</tr>
<tr id="i11" class="rowColor">
<td class="colFirst"><code>static <a href="Span.html" title="class in org.apache.calcite.sql.parser">Span</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#of(org.apache.calcite.sql.SqlNode)">of</a></span>&#8203;(<a href="../SqlNode.html" title="class in org.apache.calcite.sql">SqlNode</a>&nbsp;n)</code></th>
<td class="colLast">
<div class="block">Creates a Span of one node.</div>
</td>
</tr>
<tr id="i12" class="altColor">
<td class="colFirst"><code>static <a href="Span.html" title="class in org.apache.calcite.sql.parser">Span</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#of(org.apache.calcite.sql.SqlNode,org.apache.calcite.sql.SqlNode)">of</a></span>&#8203;(<a href="../SqlNode.html" title="class in org.apache.calcite.sql">SqlNode</a>&nbsp;n0,
<a href="../SqlNode.html" title="class in org.apache.calcite.sql">SqlNode</a>&nbsp;n1)</code></th>
<td class="colLast">
<div class="block">Creates a Span between two nodes.</div>
</td>
</tr>
<tr id="i13" class="rowColor">
<td class="colFirst"><code><a href="SqlParserPos.html" title="class in org.apache.calcite.sql.parser">SqlParserPos</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#pos()">pos</a></span>()</code></th>
<td class="colLast">
<div class="block">Returns a position spanning the earliest position to the latest.</div>
</td>
</tr>
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<h3>Methods inherited from class&nbsp;java.lang.Object</h3>
<code>clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait</code></li>
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<h3>Field Detail</h3>
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<h4>posList</h4>
<pre>private final&nbsp;java.util.List&lt;<a href="SqlParserPos.html" title="class in org.apache.calcite.sql.parser">SqlParserPos</a>&gt; posList</pre>
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<h4>Span</h4>
<pre>private&nbsp;Span()</pre>
<div class="block">Use one of the <a href="#of()"><code>of()</code></a> methods.</div>
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<a id="of()">
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<h4>of</h4>
<pre class="methodSignature">public static&nbsp;<a href="Span.html" title="class in org.apache.calcite.sql.parser">Span</a>&nbsp;of()</pre>
<div class="block">Creates an empty Span.</div>
</li>
</ul>
<a id="of(org.apache.calcite.sql.parser.SqlParserPos)">
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</a>
<ul class="blockList">
<li class="blockList">
<h4>of</h4>
<pre class="methodSignature">public static&nbsp;<a href="Span.html" title="class in org.apache.calcite.sql.parser">Span</a>&nbsp;of&#8203;(<a href="SqlParserPos.html" title="class in org.apache.calcite.sql.parser">SqlParserPos</a>&nbsp;p)</pre>
<div class="block">Creates a Span with one position.</div>
</li>
</ul>
<a id="of(org.apache.calcite.sql.SqlNode)">
<!-- -->
</a>
<ul class="blockList">
<li class="blockList">
<h4>of</h4>
<pre class="methodSignature">public static&nbsp;<a href="Span.html" title="class in org.apache.calcite.sql.parser">Span</a>&nbsp;of&#8203;(<a href="../SqlNode.html" title="class in org.apache.calcite.sql">SqlNode</a>&nbsp;n)</pre>
<div class="block">Creates a Span of one node.</div>
</li>
</ul>
<a id="of(org.apache.calcite.sql.SqlNode,org.apache.calcite.sql.SqlNode)">
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</a>
<ul class="blockList">
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<h4>of</h4>
<pre class="methodSignature">public static&nbsp;<a href="Span.html" title="class in org.apache.calcite.sql.parser">Span</a>&nbsp;of&#8203;(<a href="../SqlNode.html" title="class in org.apache.calcite.sql">SqlNode</a>&nbsp;n0,
<a href="../SqlNode.html" title="class in org.apache.calcite.sql">SqlNode</a>&nbsp;n1)</pre>
<div class="block">Creates a Span between two nodes.</div>
</li>
</ul>
<a id="of(java.util.Collection)">
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<h4>of</h4>
<pre class="methodSignature">public static&nbsp;<a href="Span.html" title="class in org.apache.calcite.sql.parser">Span</a>&nbsp;of&#8203;(java.util.Collection&lt;? extends <a href="../SqlNode.html" title="class in org.apache.calcite.sql">SqlNode</a>&gt;&nbsp;nodes)</pre>
<div class="block">Creates a Span of a list of nodes.</div>
</li>
</ul>
<a id="add(org.apache.calcite.sql.SqlNode)">
<!-- -->
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<ul class="blockList">
<li class="blockList">
<h4>add</h4>
<pre class="methodSignature">public&nbsp;<a href="Span.html" title="class in org.apache.calcite.sql.parser">Span</a>&nbsp;add&#8203;(<a href="../SqlNode.html" title="class in org.apache.calcite.sql">SqlNode</a>&nbsp;n)</pre>
<div class="block">Adds a node's position to the list,
and returns this Span.</div>
</li>
</ul>
<a id="addIf(org.apache.calcite.sql.SqlNode)">
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</a>
<ul class="blockList">
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<h4>addIf</h4>
<pre class="methodSignature">public&nbsp;<a href="Span.html" title="class in org.apache.calcite.sql.parser">Span</a>&nbsp;addIf&#8203;(<a href="../SqlNode.html" title="class in org.apache.calcite.sql">SqlNode</a>&nbsp;n)</pre>
<div class="block">Adds a node's position to the list if the node is not null,
and returns this Span.</div>
</li>
</ul>
<a id="add(org.apache.calcite.sql.parser.SqlParserPos)">
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</a>
<ul class="blockList">
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<h4>add</h4>
<pre class="methodSignature">public&nbsp;<a href="Span.html" title="class in org.apache.calcite.sql.parser">Span</a>&nbsp;add&#8203;(<a href="SqlParserPos.html" title="class in org.apache.calcite.sql.parser">SqlParserPos</a>&nbsp;pos)</pre>
<div class="block">Adds a position to the list,
and returns this Span.</div>
</li>
</ul>
<a id="addAll(java.lang.Iterable)">
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</a>
<ul class="blockList">
<li class="blockList">
<h4>addAll</h4>
<pre class="methodSignature">public&nbsp;<a href="Span.html" title="class in org.apache.calcite.sql.parser">Span</a>&nbsp;addAll&#8203;(java.lang.Iterable&lt;? extends <a href="../SqlNode.html" title="class in org.apache.calcite.sql">SqlNode</a>&gt;&nbsp;nodes)</pre>
<div class="block">Adds the positions of a collection of nodes to the list,
and returns this Span.</div>
</li>
</ul>
<a id="add(org.apache.calcite.sql.parser.SqlAbstractParserImpl)">
<!-- -->
</a>
<ul class="blockList">
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<h4>add</h4>
<pre class="methodSignature">public&nbsp;<a href="Span.html" title="class in org.apache.calcite.sql.parser">Span</a>&nbsp;add&#8203;(<a href="SqlAbstractParserImpl.html" title="class in org.apache.calcite.sql.parser">SqlAbstractParserImpl</a>&nbsp;parser)</pre>
<div class="block">Adds the position of the last token emitted by a parser to the list,
and returns this Span.</div>
</li>
</ul>
<a id="pos()">
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<ul class="blockList">
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<h4>pos</h4>
<pre class="methodSignature">public&nbsp;<a href="SqlParserPos.html" title="class in org.apache.calcite.sql.parser">SqlParserPos</a>&nbsp;pos()</pre>
<div class="block">Returns a position spanning the earliest position to the latest.
Does not assume that the positions are sorted.
Throws if the list is empty.</div>
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<h4>end</h4>
<pre class="methodSignature">public&nbsp;<a href="SqlParserPos.html" title="class in org.apache.calcite.sql.parser">SqlParserPos</a>&nbsp;end&#8203;(<a href="SqlAbstractParserImpl.html" title="class in org.apache.calcite.sql.parser">SqlAbstractParserImpl</a>&nbsp;parser)</pre>
<div class="block">Adds the position of the last token emitted by a parser to the list,
and returns a position that covers the whole range.</div>
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<h4>end</h4>
<pre class="methodSignature">public&nbsp;<a href="SqlParserPos.html" title="class in org.apache.calcite.sql.parser">SqlParserPos</a>&nbsp;end&#8203;(<a href="../SqlNode.html" title="class in org.apache.calcite.sql">SqlNode</a>&nbsp;n)</pre>
<div class="block">Adds a node's position to the list,
and returns a position that covers the whole range.</div>
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<h4>clear</h4>
<pre class="methodSignature">public&nbsp;<a href="Span.html" title="class in org.apache.calcite.sql.parser">Span</a>&nbsp;clear()</pre>
<div class="block">Clears the contents of this Span, and returns this Span.</div>
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