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 <div class="subTitle"><span class="packageLabelInType">Package</span>&nbsp;<a href="package-summary.html">org.apache.sysds.parser</a></div>
 <h2 title="Class Expression" class="title">Class Expression</h2>
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 <li>org.apache.sysds.parser.Expression</li>
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 <dd><code><a href="ParseInfo.html" title="interface in org.apache.sysds.parser">ParseInfo</a></code></dd>
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 <dt>Direct Known Subclasses:</dt>
 <dd><code><a href="BinaryExpression.html" title="class in org.apache.sysds.parser">BinaryExpression</a></code>, <code><a href="BooleanExpression.html" title="class in org.apache.sysds.parser">BooleanExpression</a></code>, <code><a href="ExpressionList.html" title="class in org.apache.sysds.parser">ExpressionList</a></code>, <code><a href="Identifier.html" title="class in org.apache.sysds.parser">Identifier</a></code>, <code><a href="IterablePredicate.html" title="class in org.apache.sysds.parser">IterablePredicate</a></code>, <code><a href="RelationalExpression.html" title="class in org.apache.sysds.parser">RelationalExpression</a></code></dd>
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 <pre>public abstract class <span class="typeNameLabel">Expression</span>
 extends <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Object.html?is-external=true" title="class or interface in java.lang" class="externalLink">Object</a>
 implements <a href="ParseInfo.html" title="interface in org.apache.sysds.parser">ParseInfo</a></pre>
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 <th class="colFirst" scope="col">Modifier and Type</th>
 <th class="colSecond" scope="col">Class</th>
 <th class="colLast" scope="col">Description</th>
 </tr>
 <tr class="altColor">
 <td class="colFirst"><code>static class&nbsp;</code></td>
 <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="Expression.BinaryOp.html" title="enum in org.apache.sysds.parser">Expression.BinaryOp</a></span></code></th>
 <td class="colLast">
 <div class="block">Binary operators.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <td class="colFirst"><code>static class&nbsp;</code></td>
 <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="Expression.BooleanOp.html" title="enum in org.apache.sysds.parser">Expression.BooleanOp</a></span></code></th>
 <td class="colLast">
 <div class="block">Boolean operators.</div>
 </td>
 </tr>
 <tr class="altColor">
 <td class="colFirst"><code>static class&nbsp;</code></td>
 <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="Expression.DataOp.html" title="enum in org.apache.sysds.parser">Expression.DataOp</a></span></code></th>
 <td class="colLast">
 <div class="block">Data operators.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <td class="colFirst"><code>static class&nbsp;</code></td>
 <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="Expression.FunctCallOp.html" title="enum in org.apache.sysds.parser">Expression.FunctCallOp</a></span></code></th>
 <td class="colLast">
 <div class="block">Function call operators.</div>
 </td>
 </tr>
 <tr class="altColor">
 <td class="colFirst"><code>static class&nbsp;</code></td>
 <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="Expression.RelationalOp.html" title="enum in org.apache.sysds.parser">Expression.RelationalOp</a></span></code></th>
 <td class="colLast">
 <div class="block">Relational operators.</div>
 </td>
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 <th class="colFirst" scope="col">Constructor</th>
 <th class="colLast" scope="col">Description</th>
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 <tr class="altColor">
 <th class="colConstructorName" scope="row"><code><span class="memberNameLink"><a href="#%3Cinit%3E()">Expression</a></span>()</code></th>
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 <tr>
 <th class="colFirst" scope="col">Modifier and Type</th>
 <th class="colSecond" scope="col">Method</th>
 <th class="colLast" scope="col">Description</th>
 </tr>
 <tr id="i0" class="altColor">
 <td class="colFirst"><code>static <a href="../common/Types.DataType.html" title="enum in org.apache.sysds.common">Types.DataType</a></code></td>
 <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#computeDataType(org.apache.sysds.parser.Expression,org.apache.sysds.parser.Expression,boolean)">computeDataType</a></span>&#8203;(<a href="Expression.html" title="class in org.apache.sysds.parser">Expression</a>&nbsp;expression1,
                <a href="Expression.html" title="class in org.apache.sysds.parser">Expression</a>&nbsp;expression2,
                boolean&nbsp;cast)</code></th>
 <td class="colLast">
 <div class="block">Compute data type based on expressions.</div>
 </td>
 </tr>
 <tr id="i1" class="rowColor">
 <td class="colFirst"><code>static <a href="../common/Types.DataType.html" title="enum in org.apache.sysds.common">Types.DataType</a></code></td>
 <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#computeDataType(org.apache.sysds.parser.Identifier,org.apache.sysds.parser.Identifier,boolean)">computeDataType</a></span>&#8203;(<a href="Identifier.html" title="class in org.apache.sysds.parser">Identifier</a>&nbsp;identifier1,
                <a href="Identifier.html" title="class in org.apache.sysds.parser">Identifier</a>&nbsp;identifier2,
                boolean&nbsp;cast)</code></th>
 <td class="colLast">
 <div class="block">Compute data type based on identifiers.</div>
 </td>
 </tr>
 <tr id="i2" class="altColor">
 <td class="colFirst"><code>static <a href="../common/Types.ValueType.html" title="enum in org.apache.sysds.common">Types.ValueType</a></code></td>
 <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#computeValueType(org.apache.sysds.parser.Expression,org.apache.sysds.common.Types.ValueType,org.apache.sysds.common.Types.ValueType,boolean)">computeValueType</a></span>&#8203;(<a href="Expression.html" title="class in org.apache.sysds.parser">Expression</a>&nbsp;expr1,
                 <a href="../common/Types.ValueType.html" title="enum in org.apache.sysds.common">Types.ValueType</a>&nbsp;v1,
                 <a href="../common/Types.ValueType.html" title="enum in org.apache.sysds.common">Types.ValueType</a>&nbsp;v2,
                 boolean&nbsp;cast)</code></th>
 <td class="colLast">&nbsp;</td>
 </tr>
 <tr id="i3" class="rowColor">
 <td class="colFirst"><code>static <a href="../common/Types.ValueType.html" title="enum in org.apache.sysds.common">Types.ValueType</a></code></td>
 <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#computeValueType(org.apache.sysds.parser.Expression,org.apache.sysds.parser.Expression,boolean)">computeValueType</a></span>&#8203;(<a href="Expression.html" title="class in org.apache.sysds.parser">Expression</a>&nbsp;expression1,
                 <a href="Expression.html" title="class in org.apache.sysds.parser">Expression</a>&nbsp;expression2,
                 boolean&nbsp;cast)</code></th>
 <td class="colLast">
 <div class="block">Compute value type based on expressions.</div>
 </td>
 </tr>
 <tr id="i4" class="altColor">
 <td class="colFirst"><code>static <a href="../common/Types.ValueType.html" title="enum in org.apache.sysds.common">Types.ValueType</a></code></td>
 <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#computeValueType(org.apache.sysds.parser.Identifier,org.apache.sysds.parser.Identifier,boolean)">computeValueType</a></span>&#8203;(<a href="Identifier.html" title="class in org.apache.sysds.parser">Identifier</a>&nbsp;identifier1,
                 <a href="Identifier.html" title="class in org.apache.sysds.parser">Identifier</a>&nbsp;identifier2,
                 boolean&nbsp;cast)</code></th>
 <td class="colLast">
 <div class="block">Compute value type based on identifiers.</div>
 </td>
 </tr>
 <tr id="i5" class="rowColor">
 <td class="colFirst"><code>static <a href="../common/Types.FileFormat.html" title="enum in org.apache.sysds.common">Types.FileFormat</a></code></td>
 <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#convertFormatType(java.lang.String)">convertFormatType</a></span>&#8203;(<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a>&nbsp;format)</code></th>
 <td class="colLast">
 <div class="block">Convert string format type to <code>Hop.FileFormatTypes</code>.</div>
 </td>
 </tr>
 <tr id="i6" class="altColor">
 <td class="colFirst"><code>boolean</code></td>
 <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#equals(java.lang.Object)">equals</a></span>&#8203;(<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Object.html?is-external=true" title="class or interface in java.lang" class="externalLink">Object</a>&nbsp;that)</code></th>
 <td class="colLast">&nbsp;</td>
 </tr>
 <tr id="i7" class="rowColor">
 <td class="colFirst"><code>int</code></td>
 <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getBeginColumn()">getBeginColumn</a></span>()</code></th>
 <td class="colLast">&nbsp;</td>
 </tr>
 <tr id="i8" class="altColor">
 <td class="colFirst"><code>int</code></td>
 <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getBeginLine()">getBeginLine</a></span>()</code></th>
 <td class="colLast">&nbsp;</td>
 </tr>
 <tr id="i9" class="rowColor">
 <td class="colFirst"><code>static <a href="../runtime/meta/MatrixCharacteristics.html" title="class in org.apache.sysds.runtime.meta">MatrixCharacteristics</a></code></td>
 <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getBinaryMatrixCharacteristics(org.apache.sysds.parser.Expression,org.apache.sysds.parser.Expression)">getBinaryMatrixCharacteristics</a></span>&#8203;(<a href="Expression.html" title="class in org.apache.sysds.parser">Expression</a>&nbsp;expression1,
                               <a href="Expression.html" title="class in org.apache.sysds.parser">Expression</a>&nbsp;expression2)</code></th>
 <td class="colLast">
 <div class="block">Returns the matrix characteristics for scalar-scalar, scalar-matrix, matrix-scalar, matrix-matrix
  operations.</div>
 </td>
 </tr>
 <tr id="i10" class="altColor">
 <td class="colFirst"><code>static <a href="Expression.BinaryOp.html" title="enum in org.apache.sysds.parser">Expression.BinaryOp</a></code></td>
 <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getBinaryOp(java.lang.String)">getBinaryOp</a></span>&#8203;(<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a>&nbsp;val)</code></th>
 <td class="colLast">
 <div class="block">Convert string value to binary operator.</div>
 </td>
 </tr>
 <tr id="i11" class="rowColor">
 <td class="colFirst"><code>static <a href="Expression.BooleanOp.html" title="enum in org.apache.sysds.parser">Expression.BooleanOp</a></code></td>
 <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getBooleanOp(java.lang.String)">getBooleanOp</a></span>&#8203;(<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a>&nbsp;val)</code></th>
 <td class="colLast">
 <div class="block">Convert string value to boolean operator.</div>
 </td>
 </tr>
 <tr id="i12" class="altColor">
 <td class="colFirst"><code>int</code></td>
 <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getEndColumn()">getEndColumn</a></span>()</code></th>
 <td class="colLast">&nbsp;</td>
 </tr>
 <tr id="i13" class="rowColor">
 <td class="colFirst"><code>int</code></td>
 <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getEndLine()">getEndLine</a></span>()</code></th>
 <td class="colLast">&nbsp;</td>
 </tr>
 <tr id="i14" class="altColor">
 <td class="colFirst"><code><a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a></code></td>
 <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getFilename()">getFilename</a></span>()</code></th>
 <td class="colLast">&nbsp;</td>
 </tr>
 <tr id="i15" class="rowColor">
 <td class="colFirst"><code><a href="Identifier.html" title="class in org.apache.sysds.parser">Identifier</a></code></td>
 <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getOutput()">getOutput</a></span>()</code></th>
 <td class="colLast">
 <div class="block">Obtain identifier.</div>
 </td>
 </tr>
 <tr id="i16" class="altColor">
 <td class="colFirst"><code><a href="Identifier.html" title="class in org.apache.sysds.parser">Identifier</a>[]</code></td>
 <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getOutputs()">getOutputs</a></span>()</code></th>
 <td class="colLast">
 <div class="block">Obtain identifiers.</div>
 </td>
 </tr>
 <tr id="i17" class="rowColor">
 <td class="colFirst"><code><a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/util/ArrayList.html?is-external=true" title="class or interface in java.util" class="externalLink">ArrayList</a>&lt;<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a>&gt;</code></td>
 <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getParseExceptionList()">getParseExceptionList</a></span>()</code></th>
 <td class="colLast">&nbsp;</td>
 </tr>
 <tr id="i18" class="altColor">
 <td class="colFirst"><code>static <a href="Expression.RelationalOp.html" title="enum in org.apache.sysds.parser">Expression.RelationalOp</a></code></td>
 <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getRelationalOp(java.lang.String)">getRelationalOp</a></span>&#8203;(<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a>&nbsp;val)</code></th>
 <td class="colLast">
 <div class="block">Convert string value to relational operator.</div>
 </td>
 </tr>
 <tr id="i19" class="rowColor">
 <td class="colFirst"><code>static <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a></code></td>
 <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getTempName()">getTempName</a></span>()</code></th>
 <td class="colLast">
 <div class="block">Obtain temporary name ("parsertemp" + _tempId) for expression.</div>
 </td>
 </tr>
 <tr id="i20" class="altColor">
 <td class="colFirst"><code><a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a></code></td>
 <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getText()">getText</a></span>()</code></th>
 <td class="colLast">&nbsp;</td>
 </tr>
 <tr id="i21" class="rowColor">
 <td class="colFirst"><code>int</code></td>
 <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#hashCode()">hashCode</a></span>()</code></th>
 <td class="colLast">&nbsp;</td>
 </tr>
 <tr id="i22" class="altColor">
 <td class="colFirst"><code><a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a></code></td>
 <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#printErrorLocation()">printErrorLocation</a></span>()</code></th>
 <td class="colLast">&nbsp;</td>
 </tr>
 <tr id="i23" class="rowColor">
 <td class="colFirst"><code><a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a></code></td>
 <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#printInfoLocation()">printInfoLocation</a></span>()</code></th>
 <td class="colLast">
 <div class="block">Return info message containing the filename, the beginning line position, and the beginning column position.</div>
 </td>
 </tr>
 <tr id="i24" class="altColor">
 <td class="colFirst"><code><a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a></code></td>
 <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#printWarningLocation()">printWarningLocation</a></span>()</code></th>
 <td class="colLast">&nbsp;</td>
 </tr>
 <tr id="i25" class="rowColor">
 <td class="colFirst"><code>void</code></td>
 <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#raiseValidateError(java.lang.String)">raiseValidateError</a></span>&#8203;(<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a>&nbsp;message)</code></th>
 <td class="colLast">
 <div class="block">Throw a LanguageException with the message.</div>
 </td>
 </tr>
 <tr id="i26" class="altColor">
 <td class="colFirst"><code>void</code></td>
 <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#raiseValidateError(java.lang.String,boolean)">raiseValidateError</a></span>&#8203;(<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a>&nbsp;message,
                   boolean&nbsp;conditional)</code></th>
 <td class="colLast">
 <div class="block">Throw a LanguageException with the message if conditional is <code>false</code>;
  otherwise log the message as a warning.</div>
 </td>
 </tr>
 <tr id="i27" class="rowColor">
 <td class="colFirst"><code>void</code></td>
 <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#raiseValidateError(java.lang.String,boolean,java.lang.String)">raiseValidateError</a></span>&#8203;(<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a>&nbsp;msg,
                   boolean&nbsp;conditional,
                   <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a>&nbsp;errorCode)</code></th>
 <td class="colLast">
 <div class="block">Throw a LanguageException with the message (and optional error code) if conditional is <code>false</code>;
  otherwise log the message as a warning.</div>
 </td>
 </tr>
 <tr id="i28" class="altColor">
 <td class="colFirst"><code>abstract <a href="Expression.html" title="class in org.apache.sysds.parser">Expression</a></code></td>
 <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#rewriteExpression(java.lang.String)">rewriteExpression</a></span>&#8203;(<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a>&nbsp;prefix)</code></th>
 <td class="colLast">&nbsp;</td>
 </tr>
 <tr id="i29" class="rowColor">
 <td class="colFirst"><code>void</code></td>
 <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#setBeginColumn(int)">setBeginColumn</a></span>&#8203;(int&nbsp;passed)</code></th>
 <td class="colLast">&nbsp;</td>
 </tr>
 <tr id="i30" class="altColor">
 <td class="colFirst"><code>void</code></td>
 <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#setBeginLine(int)">setBeginLine</a></span>&#8203;(int&nbsp;passed)</code></th>
 <td class="colLast">&nbsp;</td>
 </tr>
 <tr id="i31" class="rowColor">
 <td class="colFirst"><code>void</code></td>
 <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#setCtxValues(org.antlr.v4.runtime.ParserRuleContext)">setCtxValues</a></span>&#8203;(org.antlr.v4.runtime.ParserRuleContext&nbsp;ctx)</code></th>
 <td class="colLast">
 <div class="block">Set ParserRuleContext values (begin line, begin column, end line, end
  column, and text).</div>
 </td>
 </tr>
 <tr id="i32" class="altColor">
 <td class="colFirst"><code>void</code></td>
 <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#setCtxValuesAndFilename(org.antlr.v4.runtime.ParserRuleContext,java.lang.String)">setCtxValuesAndFilename</a></span>&#8203;(org.antlr.v4.runtime.ParserRuleContext&nbsp;ctx,
                        <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a>&nbsp;filename)</code></th>
 <td class="colLast">
 <div class="block">Set ParserRuleContext values (begin line, begin column, end line, end
  column, and text) and file name.</div>
 </td>
 </tr>
 <tr id="i33" class="rowColor">
 <td class="colFirst"><code>void</code></td>
 <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#setEndColumn(int)">setEndColumn</a></span>&#8203;(int&nbsp;passed)</code></th>
 <td class="colLast">&nbsp;</td>
 </tr>
 <tr id="i34" class="altColor">
 <td class="colFirst"><code>void</code></td>
 <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#setEndLine(int)">setEndLine</a></span>&#8203;(int&nbsp;passed)</code></th>
 <td class="colLast">&nbsp;</td>
 </tr>
 <tr id="i35" class="rowColor">
 <td class="colFirst"><code>void</code></td>
 <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#setFilename(java.lang.String)">setFilename</a></span>&#8203;(<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a>&nbsp;passed)</code></th>
 <td class="colLast">&nbsp;</td>
 </tr>
 <tr id="i36" class="altColor">
 <td class="colFirst"><code>void</code></td>
 <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#setOutput(org.apache.sysds.parser.Identifier)">setOutput</a></span>&#8203;(<a href="Identifier.html" title="class in org.apache.sysds.parser">Identifier</a>&nbsp;output)</code></th>
 <td class="colLast">&nbsp;</td>
 </tr>
 <tr id="i37" class="rowColor">
 <td class="colFirst"><code>void</code></td>
 <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#setParseExceptionList(java.util.ArrayList)">setParseExceptionList</a></span>&#8203;(<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/util/ArrayList.html?is-external=true" title="class or interface in java.util" class="externalLink">ArrayList</a>&lt;<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a>&gt;&nbsp;passed)</code></th>
 <td class="colLast">&nbsp;</td>
 </tr>
 <tr id="i38" class="altColor">
 <td class="colFirst"><code>void</code></td>
 <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#setParseInfo(org.apache.sysds.parser.ParseInfo)">setParseInfo</a></span>&#8203;(<a href="ParseInfo.html" title="interface in org.apache.sysds.parser">ParseInfo</a>&nbsp;parseInfo)</code></th>
 <td class="colLast">
 <div class="block">Set parse information.</div>
 </td>
 </tr>
 <tr id="i39" class="rowColor">
 <td class="colFirst"><code>void</code></td>
 <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#setText(java.lang.String)">setText</a></span>&#8203;(<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a>&nbsp;text)</code></th>
 <td class="colLast">&nbsp;</td>
 </tr>
 <tr id="i40" class="altColor">
 <td class="colFirst"><code>void</code></td>
 <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#validateExpression(java.util.HashMap,java.util.HashMap,boolean)">validateExpression</a></span>&#8203;(<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/util/HashMap.html?is-external=true" title="class or interface in java.util" class="externalLink">HashMap</a>&lt;<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a>,&#8203;<a href="DataIdentifier.html" title="class in org.apache.sysds.parser">DataIdentifier</a>&gt;&nbsp;ids,
                   <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/util/HashMap.html?is-external=true" title="class or interface in java.util" class="externalLink">HashMap</a>&lt;<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a>,&#8203;<a href="ConstIdentifier.html" title="class in org.apache.sysds.parser">ConstIdentifier</a>&gt;&nbsp;currConstVars,
                   boolean&nbsp;conditional)</code></th>
 <td class="colLast">&nbsp;</td>
 </tr>
 <tr id="i41" class="rowColor">
 <td class="colFirst"><code>void</code></td>
 <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#validateExpression(org.apache.sysds.parser.MultiAssignmentStatement,java.util.HashMap,java.util.HashMap,boolean)">validateExpression</a></span>&#8203;(<a href="MultiAssignmentStatement.html" title="class in org.apache.sysds.parser">MultiAssignmentStatement</a>&nbsp;mas,
                   <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/util/HashMap.html?is-external=true" title="class or interface in java.util" class="externalLink">HashMap</a>&lt;<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a>,&#8203;<a href="DataIdentifier.html" title="class in org.apache.sysds.parser">DataIdentifier</a>&gt;&nbsp;ids,
                   <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/util/HashMap.html?is-external=true" title="class or interface in java.util" class="externalLink">HashMap</a>&lt;<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a>,&#8203;<a href="ConstIdentifier.html" title="class in org.apache.sysds.parser">ConstIdentifier</a>&gt;&nbsp;currConstVars,
                   boolean&nbsp;conditional)</code></th>
 <td class="colLast">&nbsp;</td>
 </tr>
 <tr id="i42" class="altColor">
 <td class="colFirst"><code>abstract <a href="VariableSet.html" title="class in org.apache.sysds.parser">VariableSet</a></code></td>
 <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#variablesRead()">variablesRead</a></span>()</code></th>
 <td class="colLast">&nbsp;</td>
 </tr>
 <tr id="i43" class="rowColor">
 <td class="colFirst"><code>abstract <a href="VariableSet.html" title="class in org.apache.sysds.parser">VariableSet</a></code></td>
 <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#variablesUpdated()">variablesUpdated</a></span>()</code></th>
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 <code><a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Object.html?is-external=true#getClass()" title="class or interface in java.lang" class="externalLink">getClass</a>, <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Object.html?is-external=true#notify()" title="class or interface in java.lang" class="externalLink">notify</a>, <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Object.html?is-external=true#notifyAll()" title="class or interface in java.lang" class="externalLink">notifyAll</a>, <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Object.html?is-external=true#toString()" title="class or interface in java.lang" class="externalLink">toString</a>, <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Object.html?is-external=true#wait()" title="class or interface in java.lang" class="externalLink">wait</a>, <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Object.html?is-external=true#wait(long)" title="class or interface in java.lang" class="externalLink">wait</a>, <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Object.html?is-external=true#wait(long,int)" title="class or interface in java.lang" class="externalLink">wait</a></code></li>
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 <h4>Expression</h4>
 <pre>public&nbsp;Expression()</pre>
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 <pre class="methodSignature">public abstract&nbsp;<a href="Expression.html" title="class in org.apache.sysds.parser">Expression</a>&nbsp;rewriteExpression&#8203;(<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a>&nbsp;prefix)</pre>
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 <pre class="methodSignature">public&nbsp;void&nbsp;setOutput&#8203;(<a href="Identifier.html" title="class in org.apache.sysds.parser">Identifier</a>&nbsp;output)</pre>
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 <pre class="methodSignature">public&nbsp;<a href="Identifier.html" title="class in org.apache.sysds.parser">Identifier</a>&nbsp;getOutput()</pre>
 <div class="block">Obtain identifier.</div>
 <dl>
 <dt><span class="returnLabel">Returns:</span></dt>
 <dd>Identifier</dd>
 </dl>
 </li>
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 <pre class="methodSignature">public&nbsp;<a href="Identifier.html" title="class in org.apache.sysds.parser">Identifier</a>[]&nbsp;getOutputs()</pre>
 <div class="block">Obtain identifiers.</div>
 <dl>
 <dt><span class="returnLabel">Returns:</span></dt>
 <dd>Identifiers</dd>
 </dl>
 </li>
 </ul>
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 <pre class="methodSignature">public&nbsp;void&nbsp;validateExpression&#8203;(<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/util/HashMap.html?is-external=true" title="class or interface in java.util" class="externalLink">HashMap</a>&lt;<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a>,&#8203;<a href="DataIdentifier.html" title="class in org.apache.sysds.parser">DataIdentifier</a>&gt;&nbsp;ids,
                                <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/util/HashMap.html?is-external=true" title="class or interface in java.util" class="externalLink">HashMap</a>&lt;<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a>,&#8203;<a href="ConstIdentifier.html" title="class in org.apache.sysds.parser">ConstIdentifier</a>&gt;&nbsp;currConstVars,
                                boolean&nbsp;conditional)</pre>
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 <pre class="methodSignature">public&nbsp;void&nbsp;validateExpression&#8203;(<a href="MultiAssignmentStatement.html" title="class in org.apache.sysds.parser">MultiAssignmentStatement</a>&nbsp;mas,
                                <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/util/HashMap.html?is-external=true" title="class or interface in java.util" class="externalLink">HashMap</a>&lt;<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a>,&#8203;<a href="DataIdentifier.html" title="class in org.apache.sysds.parser">DataIdentifier</a>&gt;&nbsp;ids,
                                <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/util/HashMap.html?is-external=true" title="class or interface in java.util" class="externalLink">HashMap</a>&lt;<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a>,&#8203;<a href="ConstIdentifier.html" title="class in org.apache.sysds.parser">ConstIdentifier</a>&gt;&nbsp;currConstVars,
                                boolean&nbsp;conditional)</pre>
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 <h4>getBinaryOp</h4>
 <pre class="methodSignature">public static&nbsp;<a href="Expression.BinaryOp.html" title="enum in org.apache.sysds.parser">Expression.BinaryOp</a>&nbsp;getBinaryOp&#8203;(<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a>&nbsp;val)</pre>
 <div class="block">Convert string value to binary operator.</div>
 <dl>
 <dt><span class="paramLabel">Parameters:</span></dt>
 <dd><code>val</code> - String value ('+', '-', '*', '/', '%%', '%/%', '^', %*%')</dd>
 <dt><span class="returnLabel">Returns:</span></dt>
 <dd>Binary operator (<code>BinaryOp.PLUS</code>, <code>BinaryOp.MINUS</code>,
  <code>BinaryOp.MULT</code>, <code>BinaryOp.DIV</code>, <code>BinaryOp.MODULUS</code>,
  <code>BinaryOp.INTDIV</code>, <code>BinaryOp.POW</code>, <code>BinaryOp.MATMULT</code>).
  Returns <code>BinaryOp.INVALID</code> if string value not recognized.</dd>
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 <h4>getRelationalOp</h4>
 <pre class="methodSignature">public static&nbsp;<a href="Expression.RelationalOp.html" title="enum in org.apache.sysds.parser">Expression.RelationalOp</a>&nbsp;getRelationalOp&#8203;(<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a>&nbsp;val)</pre>
 <div class="block">Convert string value to relational operator.</div>
 <dl>
 <dt><span class="paramLabel">Parameters:</span></dt>
 <dd><code>val</code> - String value ('&lt;', '&lt;=', '&gt;', '&gt;=', '==', '!=')</dd>
 <dt><span class="returnLabel">Returns:</span></dt>
 <dd>Relational operator (<code>RelationalOp.LESS</code>, <code>RelationalOp.LESSEQUAL</code>,
  <code>RelationalOp.GREATER</code>, <code>RelationalOp.GREATEREQUAL</code>, <code>RelationalOp.EQUAL</code>,
  <code>RelationalOp.NOTEQUAL</code>).
  Returns <code>RelationalOp.INVALID</code> if string value not recognized.</dd>
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 <pre class="methodSignature">public static&nbsp;<a href="Expression.BooleanOp.html" title="enum in org.apache.sysds.parser">Expression.BooleanOp</a>&nbsp;getBooleanOp&#8203;(<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a>&nbsp;val)</pre>
 <div class="block">Convert string value to boolean operator.</div>
 <dl>
 <dt><span class="paramLabel">Parameters:</span></dt>
 <dd><code>val</code> - String value ('&amp;&amp;', '&amp;', '||', '|', '!')</dd>
 <dt><span class="returnLabel">Returns:</span></dt>
 <dd>Boolean operator (<code>BooleanOp.CONDITIONALAND</code>, <code>BooleanOp.LOGICALAND</code>,
  <code>BooleanOp.CONDITIONALOR</code>, <code>BooleanOp.LOGICALOR</code>, <code>BooleanOp.NOT</code>).
  Returns <code>BooleanOp.INVALID</code> if string value not recognized.</dd>
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 <pre class="methodSignature">public static&nbsp;<a href="../common/Types.FileFormat.html" title="enum in org.apache.sysds.common">Types.FileFormat</a>&nbsp;convertFormatType&#8203;(<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a>&nbsp;format)</pre>
 <div class="block">Convert string format type to <code>Hop.FileFormatTypes</code>.</div>
 <dl>
 <dt><span class="paramLabel">Parameters:</span></dt>
 <dd><code>format</code> - String format type ("text", "binary", "mm", "csv")</dd>
 <dt><span class="returnLabel">Returns:</span></dt>
 <dd>Format as <code>Hop.FileFormatTypes</code>. Can be
  <code>FileFormatTypes.TEXT</code>, <code>FileFormatTypes.BINARY</code>,
  <code>FileFormatTypes.MM</code>, or <code>FileFormatTypes.CSV</code>. Unrecognized
  type is set to <code>FileFormatTypes.TEXT</code>.</dd>
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 <pre class="methodSignature">public static&nbsp;<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a>&nbsp;getTempName()</pre>
 <div class="block">Obtain temporary name ("parsertemp" + _tempId) for expression. Used to construct Hops from
  parse tree.</div>
 <dl>
 <dt><span class="returnLabel">Returns:</span></dt>
 <dd>Temporary name of expression.</dd>
 </dl>
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 <pre class="methodSignature">public abstract&nbsp;<a href="VariableSet.html" title="class in org.apache.sysds.parser">VariableSet</a>&nbsp;variablesRead()</pre>
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 <pre class="methodSignature">public abstract&nbsp;<a href="VariableSet.html" title="class in org.apache.sysds.parser">VariableSet</a>&nbsp;variablesUpdated()</pre>
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                                              <a href="Expression.html" title="class in org.apache.sysds.parser">Expression</a>&nbsp;expression2,
                                              boolean&nbsp;cast)</pre>
 <div class="block">Compute data type based on expressions. The identifier for each expression is obtained and passed to
  <a href="#computeDataType(org.apache.sysds.parser.Identifier,org.apache.sysds.parser.Identifier,boolean)"><code>computeDataType(Identifier, Identifier, boolean)</code></a>. If the identifiers have the same data type, the shared data type is
  returned. Otherwise, if <code>cast</code> is <code>true</code> and one of the identifiers is a matrix and the other
  identifier is a scalar, return <code>DataType.MATRIX</code>. Otherwise, throw a LanguageException.</div>
 <dl>
 <dt><span class="paramLabel">Parameters:</span></dt>
 <dd><code>expression1</code> - First expression</dd>
 <dd><code>expression2</code> - Second expression</dd>
 <dd><code>cast</code> - Whether a cast should potentially be performed</dd>
 <dt><span class="returnLabel">Returns:</span></dt>
 <dd>The data type (<a href="../common/Types.DataType.html" title="enum in org.apache.sysds.common"><code>Types.DataType</code></a>)</dd>
 </dl>
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                                              <a href="Identifier.html" title="class in org.apache.sysds.parser">Identifier</a>&nbsp;identifier2,
                                              boolean&nbsp;cast)</pre>
 <div class="block">Compute data type based on identifiers. If the identifiers have the same data type, the shared data type is
  returned. Otherwise, if <code>cast</code> is <code>true</code> and one of the identifiers is a matrix and the other
  identifier is a scalar, return <code>DataType.MATRIX</code>. Otherwise, throw a LanguageException.</div>
 <dl>
 <dt><span class="paramLabel">Parameters:</span></dt>
 <dd><code>identifier1</code> - First identifier</dd>
 <dd><code>identifier2</code> - Second identifier</dd>
 <dd><code>cast</code> - Whether a cast should potentially be performed</dd>
 <dt><span class="returnLabel">Returns:</span></dt>
 <dd>The data type (<a href="../common/Types.DataType.html" title="enum in org.apache.sysds.common"><code>Types.DataType</code></a>)</dd>
 </dl>
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                                                <a href="Expression.html" title="class in org.apache.sysds.parser">Expression</a>&nbsp;expression2,
                                                boolean&nbsp;cast)</pre>
 <div class="block">Compute value type based on expressions. The identifier for each expression is obtained and passed to
  <a href="#computeValueType(org.apache.sysds.parser.Identifier,org.apache.sysds.parser.Identifier,boolean)"><code>computeValueType(Identifier, Identifier, boolean)</code></a>. If the identifiers have the same value type, the shared value type is
  returned. Otherwise, if <code>cast</code> is <code>true</code> and one value type is a double and the other is an int,
  return <code>ValueType.DOUBLE</code>. If <code>cast</code> is <code>true</code> and one value type is a string or the other value type is a string, return
  <code>ValueType.STRING</code>. Otherwise, throw a LanguageException.</div>
 <dl>
 <dt><span class="paramLabel">Parameters:</span></dt>
 <dd><code>expression1</code> - First expression</dd>
 <dd><code>expression2</code> - Second expression</dd>
 <dd><code>cast</code> - Whether a cast should potentially be performed</dd>
 <dt><span class="returnLabel">Returns:</span></dt>
 <dd>The value type (<a href="../common/Types.ValueType.html" title="enum in org.apache.sysds.common"><code>Types.ValueType</code></a>)</dd>
 </dl>
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                                                <a href="Identifier.html" title="class in org.apache.sysds.parser">Identifier</a>&nbsp;identifier2,
                                                boolean&nbsp;cast)</pre>
 <div class="block">Compute value type based on identifiers. If the identifiers have the same value type, the shared value type is
  returned. Otherwise, if <code>cast</code> is <code>true</code> and one value type is a double and the other is an int,
  return <code>ValueType.DOUBLE</code>. If <code>cast</code> is <code>true</code> and one value type is a string or the other value type is a string, return
  <code>ValueType.STRING</code>. Otherwise, throw a LanguageException.</div>
 <dl>
 <dt><span class="paramLabel">Parameters:</span></dt>
 <dd><code>identifier1</code> - First identifier</dd>
 <dd><code>identifier2</code> - Second identifier</dd>
 <dd><code>cast</code> - Whether a cast should potentially be performed</dd>
 <dt><span class="returnLabel">Returns:</span></dt>
 <dd>The value type (<a href="../common/Types.ValueType.html" title="enum in org.apache.sysds.common"><code>Types.ValueType</code></a>)</dd>
 </dl>
 </li>
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                                                <a href="../common/Types.ValueType.html" title="enum in org.apache.sysds.common">Types.ValueType</a>&nbsp;v1,
                                                <a href="../common/Types.ValueType.html" title="enum in org.apache.sysds.common">Types.ValueType</a>&nbsp;v2,
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 <dd><code>message</code> - the error message</dd>
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                                boolean&nbsp;conditional)</pre>
 <div class="block">Throw a LanguageException with the message if conditional is <code>false</code>;
  otherwise log the message as a warning.</div>
 <dl>
 <dt><span class="paramLabel">Parameters:</span></dt>
 <dd><code>message</code> - the error (or warning) message</dd>
 <dd><code>conditional</code> - if <code>true</code>, display log warning message. Otherwise, the message
  will be thrown as a LanguageException</dd>
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                                boolean&nbsp;conditional,
                                <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a>&nbsp;errorCode)</pre>
 <div class="block">Throw a LanguageException with the message (and optional error code) if conditional is <code>false</code>;
  otherwise log the message as a warning.</div>
 <dl>
 <dt><span class="paramLabel">Parameters:</span></dt>
 <dd><code>msg</code> - the error (or warning) message</dd>
 <dd><code>conditional</code> - if <code>true</code>, display log warning message. Otherwise, the message (and optional
  error code) will be thrown as a LanguageException</dd>
 <dd><code>errorCode</code> - optional error code</dd>
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                                                                    <a href="Expression.html" title="class in org.apache.sysds.parser">Expression</a>&nbsp;expression2)</pre>
 <div class="block">Returns the matrix characteristics for scalar-scalar, scalar-matrix, matrix-scalar, matrix-matrix
  operations. This method is aware of potentially unknowns and matrix-vector (col/row) operations.</div>
 <dl>
 <dt><span class="paramLabel">Parameters:</span></dt>
 <dd><code>expression1</code> - The first expression</dd>
 <dd><code>expression2</code> - The second expression</dd>
 <dt><span class="returnLabel">Returns:</span></dt>
 <dd>matrix characteristics
  [1] is the number of columns (clen), [2] is the number of rows in a block (blen),
  and [3] is the number of columns in a block (blen). Default (unknown) values are
  -1. Scalar values are all 0.</dd>
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 <div class="block">Set parse information.</div>
 <dl>
 <dt><span class="paramLabel">Parameters:</span></dt>
 <dd><code>parseInfo</code> - parse information, such as beginning line position, beginning
             column position, ending line position, ending column position,
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 <h4>printInfoLocation</h4>
 <pre class="methodSignature">public&nbsp;<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a>&nbsp;printInfoLocation()</pre>
 <div class="block">Return info message containing the filename, the beginning line position, and the beginning column position.</div>
 <dl>
 <dt><span class="returnLabel">Returns:</span></dt>
 <dd>the info message</dd>
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