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<div class="subTitle">com.google.javascript.rhino.jstype</div>
<h2 title="Class JSType" class="title">Class JSType</h2>
</div>
<div class="contentContainer">
<ul class="inheritance">
<li>java.lang.Object</li>
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<li>com.google.javascript.rhino.jstype.JSType</li>
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<dt>All Implemented Interfaces:</dt>
<dd>java.io.Serializable</dd>
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<dt>Direct Known Subclasses:</dt>
<dd><a href="../../../../../com/google/javascript/rhino/jstype/AllType.html" title="class in com.google.javascript.rhino.jstype">AllType</a>, <a href="../../../../../com/google/javascript/rhino/jstype/BooleanType.html" title="class in com.google.javascript.rhino.jstype">BooleanType</a>, <a href="../../../../../com/google/javascript/rhino/jstype/NullType.html" title="class in com.google.javascript.rhino.jstype">NullType</a>, <a href="../../../../../com/google/javascript/rhino/jstype/NumberType.html" title="class in com.google.javascript.rhino.jstype">NumberType</a>, <a href="../../../../../com/google/javascript/rhino/jstype/ObjectType.html" title="class in com.google.javascript.rhino.jstype">ObjectType</a>, <a href="../../../../../com/google/javascript/rhino/jstype/StringType.html" title="class in com.google.javascript.rhino.jstype">StringType</a>, <a href="../../../../../com/google/javascript/rhino/jstype/UnionType.html" title="class in com.google.javascript.rhino.jstype">UnionType</a>, <a href="../../../../../com/google/javascript/rhino/jstype/VoidType.html" title="class in com.google.javascript.rhino.jstype">VoidType</a></dd>
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<pre>public abstract class <span class="strong">JSType</span>
extends java.lang.Object
implements java.io.Serializable</pre>
<div class="block">Represents JavaScript value types.<p>
Types are split into two separate families: value types and object types.
A special <a href="../../../../../com/google/javascript/rhino/jstype/UnknownType.html" title="class in com.google.javascript.rhino.jstype"><code>UnknownType</code></a> exists to represent a wildcard type on which
no information can be gathered. In particular, it can assign to everyone,
is a subtype of everyone (and everyone is a subtype of it).<p>
If you remove the <a href="../../../../../com/google/javascript/rhino/jstype/UnknownType.html" title="class in com.google.javascript.rhino.jstype"><code>UnknownType</code></a>, the set of types in the type system
forms a lattice with the <a href="../../../../../com/google/javascript/rhino/jstype/JSType.html#isSubtype(com.google.javascript.rhino.jstype.JSType)"><code>isSubtype(com.google.javascript.rhino.jstype.JSType)</code></a> relation defining the partial
order of types. All types are united at the top of the lattice by the
<a href="../../../../../com/google/javascript/rhino/jstype/AllType.html" title="class in com.google.javascript.rhino.jstype"><code>AllType</code></a> and at the bottom by the <a href="../../../../../com/google/javascript/rhino/jstype/NoType.html" title="class in com.google.javascript.rhino.jstype"><code>NoType</code></a>.<p></div>
<dl><dt><span class="strong">See Also:</span></dt><dd><a href="../../../../../serialized-form.html#com.google.javascript.rhino.jstype.JSType">Serialized Form</a></dd></dl>
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<caption><span>Nested Classes</span><span class="tabEnd"> </span></caption>
<tr>
<th class="colFirst" scope="col">Modifier and Type</th>
<th class="colLast" scope="col">Class and Description</th>
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<tr class="altColor">
<td class="colFirst"><code>static class </code></td>
<td class="colLast"><code><strong><a href="../../../../../com/google/javascript/rhino/jstype/JSType.TypePair.html" title="class in com.google.javascript.rhino.jstype">JSType.TypePair</a></strong></code> </td>
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<th class="colFirst" scope="col">Modifier and Type</th>
<th class="colLast" scope="col">Field and Description</th>
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<tr class="altColor">
<td class="colFirst"><code>static java.lang.String</code></td>
<td class="colLast"><code><strong><a href="../../../../../com/google/javascript/rhino/jstype/JSType.html#EMPTY_TYPE_COMPONENT">EMPTY_TYPE_COMPONENT</a></strong></code> </td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>static int</code></td>
<td class="colLast"><code><strong><a href="../../../../../com/google/javascript/rhino/jstype/JSType.html#ENUMDECL">ENUMDECL</a></strong></code> </td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>static java.lang.String</code></td>
<td class="colLast"><code><strong><a href="../../../../../com/google/javascript/rhino/jstype/JSType.html#NOT_A_CLASS">NOT_A_CLASS</a></strong></code> </td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>static java.lang.String</code></td>
<td class="colLast"><code><strong><a href="../../../../../com/google/javascript/rhino/jstype/JSType.html#NOT_A_TYPE">NOT_A_TYPE</a></strong></code> </td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>static int</code></td>
<td class="colLast"><code><strong><a href="../../../../../com/google/javascript/rhino/jstype/JSType.html#NOT_ENUMDECL">NOT_ENUMDECL</a></strong></code> </td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>protected <a href="../../../../../com/google/javascript/rhino/jstype/TemplateTypeMap.html" title="class in com.google.javascript.rhino.jstype">TemplateTypeMap</a></code></td>
<td class="colLast"><code><strong><a href="../../../../../com/google/javascript/rhino/jstype/JSType.html#templateTypeMap">templateTypeMap</a></strong></code> </td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>static java.lang.String</code></td>
<td class="colLast"><code><strong><a href="../../../../../com/google/javascript/rhino/jstype/JSType.html#UNKNOWN_NAME">UNKNOWN_NAME</a></strong></code> </td>
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<th class="colFirst" scope="col">Modifier and Type</th>
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<td class="colFirst"><code><a href="../../../../../com/google/javascript/rhino/jstype/JSType.html" title="class in com.google.javascript.rhino.jstype">JSType</a></code></td>
<td class="colLast"><code><strong><a href="../../../../../com/google/javascript/rhino/jstype/JSType.html#autobox()">autobox</a></strong>()</code>
<div class="block">Dereference a type for property access.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code><a href="../../../../../com/google/javascript/rhino/jstype/JSType.html" title="class in com.google.javascript.rhino.jstype">JSType</a></code></td>
<td class="colLast"><code><strong><a href="../../../../../com/google/javascript/rhino/jstype/JSType.html#autoboxesTo()">autoboxesTo</a></strong>()</code>
<div class="block">Turn a scalar type to the corresponding object type.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>boolean</code></td>
<td class="colLast"><code><strong><a href="../../../../../com/google/javascript/rhino/jstype/JSType.html#canBeCalled()">canBeCalled</a></strong>()</code>
<div class="block">This predicate is used to test whether a given type can be used as the
'function' in a function call.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>boolean</code></td>
<td class="colLast"><code><strong><a href="../../../../../com/google/javascript/rhino/jstype/JSType.html#canCastTo(com.google.javascript.rhino.jstype.JSType)">canCastTo</a></strong>(<a href="../../../../../com/google/javascript/rhino/jstype/JSType.html" title="class in com.google.javascript.rhino.jstype">JSType</a> that)</code>
<div class="block">Tests whether values of <code>this</code> type can be safely assigned
to values of <code>that</code> type.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>boolean</code></td>
<td class="colLast"><code><strong><a href="../../../../../com/google/javascript/rhino/jstype/JSType.html#canTestForEqualityWith(com.google.javascript.rhino.jstype.JSType)">canTestForEqualityWith</a></strong>(<a href="../../../../../com/google/javascript/rhino/jstype/JSType.html" title="class in com.google.javascript.rhino.jstype">JSType</a> that)</code>
<div class="block">Tests whether <code>this</code> and <code>that</code> are meaningfully
comparable.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>boolean</code></td>
<td class="colLast"><code><strong><a href="../../../../../com/google/javascript/rhino/jstype/JSType.html#canTestForShallowEqualityWith(com.google.javascript.rhino.jstype.JSType)">canTestForShallowEqualityWith</a></strong>(<a href="../../../../../com/google/javascript/rhino/jstype/JSType.html" title="class in com.google.javascript.rhino.jstype">JSType</a> that)</code>
<div class="block">Tests whether <code>this</code> and <code>that</code> are meaningfully
comparable using shallow comparison.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><strong><a href="../../../../../com/google/javascript/rhino/jstype/JSType.html#clearResolved()">clearResolved</a></strong>()</code>
<div class="block">Clears the resolved field.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code><a href="../../../../../com/google/javascript/rhino/jstype/JSType.html" title="class in com.google.javascript.rhino.jstype">JSType</a></code></td>
<td class="colLast"><code><strong><a href="../../../../../com/google/javascript/rhino/jstype/JSType.html#collapseUnion()">collapseUnion</a></strong>()</code>
<div class="block">Gets the least supertype of this that's not a union.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code><a href="../../../../../com/google/javascript/rhino/jstype/ObjectType.html" title="class in com.google.javascript.rhino.jstype">ObjectType</a></code></td>
<td class="colLast"><code><strong><a href="../../../../../com/google/javascript/rhino/jstype/JSType.html#dereference()">dereference</a></strong>()</code>
<div class="block">Dereference a type for property access.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>boolean</code></td>
<td class="colLast"><code><strong><a href="../../../../../com/google/javascript/rhino/jstype/JSType.html#differsFrom(com.google.javascript.rhino.jstype.JSType)">differsFrom</a></strong>(<a href="../../../../../com/google/javascript/rhino/jstype/JSType.html" title="class in com.google.javascript.rhino.jstype">JSType</a> that)</code>
<div class="block">Whether this type is meaningfully different from <code>that</code> type for
the purposes of data flow analysis.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>boolean</code></td>
<td class="colLast"><code><strong><a href="../../../../../com/google/javascript/rhino/jstype/JSType.html#equals(java.lang.Object)">equals</a></strong>(java.lang.Object jsType)</code> </td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code><a href="../../../../../com/google/javascript/rhino/jstype/JSType.html" title="class in com.google.javascript.rhino.jstype">JSType</a></code></td>
<td class="colLast"><code><strong><a href="../../../../../com/google/javascript/rhino/jstype/JSType.html#findPropertyType(java.lang.String)">findPropertyType</a></strong>(java.lang.String propertyName)</code>
<div class="block">Coerces this type to an Object type, then gets the type of the property
whose name is given.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code><a href="../../../../../com/google/javascript/rhino/jstype/JSType.html" title="class in com.google.javascript.rhino.jstype">JSType</a></code></td>
<td class="colLast"><code><strong><a href="../../../../../com/google/javascript/rhino/jstype/JSType.html#forceResolve(com.google.javascript.rhino.ErrorReporter, com.google.javascript.rhino.jstype.StaticScope)">forceResolve</a></strong>(<a href="../../../../../com/google/javascript/rhino/ErrorReporter.html" title="interface in com.google.javascript.rhino">ErrorReporter</a> t,
<a href="../../../../../com/google/javascript/rhino/jstype/StaticScope.html" title="interface in com.google.javascript.rhino.jstype">StaticScope</a><<a href="../../../../../com/google/javascript/rhino/jstype/JSType.html" title="class in com.google.javascript.rhino.jstype">JSType</a>> scope)</code>
<div class="block">Force this type to resolve, even if the registry is in a lazy
resolving mode.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>java.lang.String</code></td>
<td class="colLast"><code><strong><a href="../../../../../com/google/javascript/rhino/jstype/JSType.html#getDisplayName()">getDisplayName</a></strong>()</code>
<div class="block">Returns a user meaningful label for the JSType instance.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code><a href="../../../../../com/google/javascript/rhino/jstype/JSType.html" title="class in com.google.javascript.rhino.jstype">JSType</a></code></td>
<td class="colLast"><code><strong><a href="../../../../../com/google/javascript/rhino/jstype/JSType.html#getGreatestSubtype(com.google.javascript.rhino.jstype.JSType)">getGreatestSubtype</a></strong>(<a href="../../../../../com/google/javascript/rhino/jstype/JSType.html" title="class in com.google.javascript.rhino.jstype">JSType</a> that)</code>
<div class="block">Gets the greatest subtype of <code>this</code> and <code>that</code>.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code><a href="../../../../../com/google/javascript/rhino/JSDocInfo.html" title="class in com.google.javascript.rhino">JSDocInfo</a></code></td>
<td class="colLast"><code><strong><a href="../../../../../com/google/javascript/rhino/jstype/JSType.html#getJSDocInfo()">getJSDocInfo</a></strong>()</code>
<div class="block">Gets the docInfo for this type.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code><a href="../../../../../com/google/javascript/rhino/jstype/JSType.html" title="class in com.google.javascript.rhino.jstype">JSType</a></code></td>
<td class="colLast"><code><strong><a href="../../../../../com/google/javascript/rhino/jstype/JSType.html#getLeastSupertype(com.google.javascript.rhino.jstype.JSType)">getLeastSupertype</a></strong>(<a href="../../../../../com/google/javascript/rhino/jstype/JSType.html" title="class in com.google.javascript.rhino.jstype">JSType</a> that)</code>
<div class="block">Gets the least supertype of <code>this</code> and <code>that</code>.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>abstract <a href="../../../../../com/google/javascript/rhino/jstype/BooleanLiteralSet.html" title="enum in com.google.javascript.rhino.jstype">BooleanLiteralSet</a></code></td>
<td class="colLast"><code><strong><a href="../../../../../com/google/javascript/rhino/jstype/JSType.html#getPossibleToBooleanOutcomes()">getPossibleToBooleanOutcomes</a></strong>()</code>
<div class="block">Computes the set of possible outcomes of the <code>ToBoolean</code> predicate
for this type.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code><a href="../../../../../com/google/javascript/rhino/jstype/JSType.html" title="class in com.google.javascript.rhino.jstype">JSType</a></code></td>
<td class="colLast"><code><strong><a href="../../../../../com/google/javascript/rhino/jstype/JSType.html#getRestrictedTypeGivenToBooleanOutcome(boolean)">getRestrictedTypeGivenToBooleanOutcome</a></strong>(boolean outcome)</code>
<div class="block">Computes the restricted type of this type knowing that the
<code>ToBoolean</code> predicate has a specific value.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code><a href="../../../../../com/google/javascript/rhino/jstype/TemplateTypeMap.html" title="class in com.google.javascript.rhino.jstype">TemplateTypeMap</a></code></td>
<td class="colLast"><code><strong><a href="../../../../../com/google/javascript/rhino/jstype/JSType.html#getTemplateTypeMap()">getTemplateTypeMap</a></strong>()</code>
<div class="block">Returns the template type map associated with this type.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code><a href="../../../../../com/google/javascript/rhino/jstype/JSType.TypePair.html" title="class in com.google.javascript.rhino.jstype">JSType.TypePair</a></code></td>
<td class="colLast"><code><strong><a href="../../../../../com/google/javascript/rhino/jstype/JSType.html#getTypesUnderEquality(com.google.javascript.rhino.jstype.JSType)">getTypesUnderEquality</a></strong>(<a href="../../../../../com/google/javascript/rhino/jstype/JSType.html" title="class in com.google.javascript.rhino.jstype">JSType</a> that)</code>
<div class="block">Computes the subset of <code>this</code> and <code>that</code> types if equality
is observed.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code><a href="../../../../../com/google/javascript/rhino/jstype/JSType.TypePair.html" title="class in com.google.javascript.rhino.jstype">JSType.TypePair</a></code></td>
<td class="colLast"><code><strong><a href="../../../../../com/google/javascript/rhino/jstype/JSType.html#getTypesUnderInequality(com.google.javascript.rhino.jstype.JSType)">getTypesUnderInequality</a></strong>(<a href="../../../../../com/google/javascript/rhino/jstype/JSType.html" title="class in com.google.javascript.rhino.jstype">JSType</a> that)</code>
<div class="block">Computes the subset of <code>this</code> and <code>that</code> types if inequality
is observed.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code><a href="../../../../../com/google/javascript/rhino/jstype/JSType.TypePair.html" title="class in com.google.javascript.rhino.jstype">JSType.TypePair</a></code></td>
<td class="colLast"><code><strong><a href="../../../../../com/google/javascript/rhino/jstype/JSType.html#getTypesUnderShallowEquality(com.google.javascript.rhino.jstype.JSType)">getTypesUnderShallowEquality</a></strong>(<a href="../../../../../com/google/javascript/rhino/jstype/JSType.html" title="class in com.google.javascript.rhino.jstype">JSType</a> that)</code>
<div class="block">Computes the subset of <code>this</code> and <code>that</code> types under shallow
equality.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code><a href="../../../../../com/google/javascript/rhino/jstype/JSType.TypePair.html" title="class in com.google.javascript.rhino.jstype">JSType.TypePair</a></code></td>
<td class="colLast"><code><strong><a href="../../../../../com/google/javascript/rhino/jstype/JSType.html#getTypesUnderShallowInequality(com.google.javascript.rhino.jstype.JSType)">getTypesUnderShallowInequality</a></strong>(<a href="../../../../../com/google/javascript/rhino/jstype/JSType.html" title="class in com.google.javascript.rhino.jstype">JSType</a> that)</code>
<div class="block">Computes the subset of <code>this</code> and <code>that</code> types under
shallow inequality.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>boolean</code></td>
<td class="colLast"><code><strong><a href="../../../../../com/google/javascript/rhino/jstype/JSType.html#hasAnyTemplateTypes()">hasAnyTemplateTypes</a></strong>()</code> </td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>boolean</code></td>
<td class="colLast"><code><strong><a href="../../../../../com/google/javascript/rhino/jstype/JSType.html#hasDisplayName()">hasDisplayName</a></strong>()</code> </td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>int</code></td>
<td class="colLast"><code><strong><a href="../../../../../com/google/javascript/rhino/jstype/JSType.html#hashCode()">hashCode</a></strong>()</code> </td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>boolean</code></td>
<td class="colLast"><code><strong><a href="../../../../../com/google/javascript/rhino/jstype/JSType.html#hasProperty(java.lang.String)">hasProperty</a></strong>(java.lang.String pname)</code>
<div class="block">Checks whether the property is present on the object.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>boolean</code></td>
<td class="colLast"><code><strong><a href="../../../../../com/google/javascript/rhino/jstype/JSType.html#isAllType()">isAllType</a></strong>()</code> </td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>boolean</code></td>
<td class="colLast"><code><strong><a href="../../../../../com/google/javascript/rhino/jstype/JSType.html#isArrayType()">isArrayType</a></strong>()</code> </td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>boolean</code></td>
<td class="colLast"><code><strong><a href="../../../../../com/google/javascript/rhino/jstype/JSType.html#isBooleanObjectType()">isBooleanObjectType</a></strong>()</code> </td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>boolean</code></td>
<td class="colLast"><code><strong><a href="../../../../../com/google/javascript/rhino/jstype/JSType.html#isBooleanValueType()">isBooleanValueType</a></strong>()</code> </td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>boolean</code></td>
<td class="colLast"><code><strong><a href="../../../../../com/google/javascript/rhino/jstype/JSType.html#isCheckedUnknownType()">isCheckedUnknownType</a></strong>()</code> </td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>boolean</code></td>
<td class="colLast"><code><strong><a href="../../../../../com/google/javascript/rhino/jstype/JSType.html#isConstructor()">isConstructor</a></strong>()</code>
<div class="block">Whether this type is a <a href="../../../../../com/google/javascript/rhino/jstype/FunctionType.html" title="class in com.google.javascript.rhino.jstype"><code>FunctionType</code></a> that is a constructor or a
named type that points to such a type.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>boolean</code></td>
<td class="colLast"><code><strong><a href="../../../../../com/google/javascript/rhino/jstype/JSType.html#isDateType()">isDateType</a></strong>()</code> </td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>boolean</code></td>
<td class="colLast"><code><strong><a href="../../../../../com/google/javascript/rhino/jstype/JSType.html#isDict()">isDict</a></strong>()</code>
<div class="block">Returns true iff <code>this</code> can be a <code>dict</code>.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>boolean</code></td>
<td class="colLast"><code><strong><a href="../../../../../com/google/javascript/rhino/jstype/JSType.html#isEmptyType()">isEmptyType</a></strong>()</code> </td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>boolean</code></td>
<td class="colLast"><code><strong><a href="../../../../../com/google/javascript/rhino/jstype/JSType.html#isEnumElementType()">isEnumElementType</a></strong>()</code> </td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>boolean</code></td>
<td class="colLast"><code><strong><a href="../../../../../com/google/javascript/rhino/jstype/JSType.html#isEnumType()">isEnumType</a></strong>()</code> </td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>static boolean</code></td>
<td class="colLast"><code><strong><a href="../../../../../com/google/javascript/rhino/jstype/JSType.html#isEquivalent(com.google.javascript.rhino.jstype.JSType, com.google.javascript.rhino.jstype.JSType)">isEquivalent</a></strong>(<a href="../../../../../com/google/javascript/rhino/jstype/JSType.html" title="class in com.google.javascript.rhino.jstype">JSType</a> typeA,
<a href="../../../../../com/google/javascript/rhino/jstype/JSType.html" title="class in com.google.javascript.rhino.jstype">JSType</a> typeB)</code> </td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>boolean</code></td>
<td class="colLast"><code><strong><a href="../../../../../com/google/javascript/rhino/jstype/JSType.html#isEquivalentTo(com.google.javascript.rhino.jstype.JSType)">isEquivalentTo</a></strong>(<a href="../../../../../com/google/javascript/rhino/jstype/JSType.html" title="class in com.google.javascript.rhino.jstype">JSType</a> that)</code>
<div class="block">Checks if two types are equivalent.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>boolean</code></td>
<td class="colLast"><code><strong><a href="../../../../../com/google/javascript/rhino/jstype/JSType.html#isFunctionPrototypeType()">isFunctionPrototypeType</a></strong>()</code>
<div class="block">Whether this is the prototype of a function.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>boolean</code></td>
<td class="colLast"><code><strong><a href="../../../../../com/google/javascript/rhino/jstype/JSType.html#isFunctionType()">isFunctionType</a></strong>()</code>
<div class="block">Returns true if toMaybeFunctionType returns a non-null FunctionType.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>boolean</code></td>
<td class="colLast"><code><strong><a href="../../../../../com/google/javascript/rhino/jstype/JSType.html#isGlobalThisType()">isGlobalThisType</a></strong>()</code>
<div class="block">Returns true if this is a global this type.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>boolean</code></td>
<td class="colLast"><code><strong><a href="../../../../../com/google/javascript/rhino/jstype/JSType.html#isInstanceType()">isInstanceType</a></strong>()</code>
<div class="block">Whether this type is an Instance object of some constructor.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>boolean</code></td>
<td class="colLast"><code><strong><a href="../../../../../com/google/javascript/rhino/jstype/JSType.html#isInterface()">isInterface</a></strong>()</code>
<div class="block">Whether this type is a <a href="../../../../../com/google/javascript/rhino/jstype/FunctionType.html" title="class in com.google.javascript.rhino.jstype"><code>FunctionType</code></a> that is an interface or a named
type that points to such a type.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>boolean</code></td>
<td class="colLast"><code><strong><a href="../../../../../com/google/javascript/rhino/jstype/JSType.html#isInvariant(com.google.javascript.rhino.jstype.JSType)">isInvariant</a></strong>(<a href="../../../../../com/google/javascript/rhino/jstype/JSType.html" title="class in com.google.javascript.rhino.jstype">JSType</a> that)</code>
<div class="block">Checks if two types are invariant.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>boolean</code></td>
<td class="colLast"><code><strong><a href="../../../../../com/google/javascript/rhino/jstype/JSType.html#isNominalConstructor()">isNominalConstructor</a></strong>()</code>
<div class="block">Whether this type is the original constructor of a nominal type.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>boolean</code></td>
<td class="colLast"><code><strong><a href="../../../../../com/google/javascript/rhino/jstype/JSType.html#isNominalType()">isNominalType</a></strong>()</code>
<div class="block">Whether this type is a nominal type (a named instance object or
a named enum).</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>boolean</code></td>
<td class="colLast"><code><strong><a href="../../../../../com/google/javascript/rhino/jstype/JSType.html#isNoObjectType()">isNoObjectType</a></strong>()</code> </td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>boolean</code></td>
<td class="colLast"><code><strong><a href="../../../../../com/google/javascript/rhino/jstype/JSType.html#isNoResolvedType()">isNoResolvedType</a></strong>()</code> </td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>boolean</code></td>
<td class="colLast"><code><strong><a href="../../../../../com/google/javascript/rhino/jstype/JSType.html#isNoType()">isNoType</a></strong>()</code> </td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>boolean</code></td>
<td class="colLast"><code><strong><a href="../../../../../com/google/javascript/rhino/jstype/JSType.html#isNullable()">isNullable</a></strong>()</code>
<div class="block">Tests whether this type is nullable.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>boolean</code></td>
<td class="colLast"><code><strong><a href="../../../../../com/google/javascript/rhino/jstype/JSType.html#isNullType()">isNullType</a></strong>()</code> </td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>boolean</code></td>
<td class="colLast"><code><strong><a href="../../../../../com/google/javascript/rhino/jstype/JSType.html#isNumber()">isNumber</a></strong>()</code>
<div class="block">Tests whether the type is a number (value or Object).</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>boolean</code></td>
<td class="colLast"><code><strong><a href="../../../../../com/google/javascript/rhino/jstype/JSType.html#isNumberObjectType()">isNumberObjectType</a></strong>()</code> </td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>boolean</code></td>
<td class="colLast"><code><strong><a href="../../../../../com/google/javascript/rhino/jstype/JSType.html#isNumberValueType()">isNumberValueType</a></strong>()</code> </td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>boolean</code></td>
<td class="colLast"><code><strong><a href="../../../../../com/google/javascript/rhino/jstype/JSType.html#isObject()">isObject</a></strong>()</code>
<div class="block">Tests whether this type is an <code>Object</code>, or any subtype thereof.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>boolean</code></td>
<td class="colLast"><code><strong><a href="../../../../../com/google/javascript/rhino/jstype/JSType.html#isOrdinaryFunction()">isOrdinaryFunction</a></strong>()</code>
<div class="block">Whether this type is a <a href="../../../../../com/google/javascript/rhino/jstype/FunctionType.html" title="class in com.google.javascript.rhino.jstype"><code>FunctionType</code></a> that is an ordinary function or
a named type that points to such a type.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>boolean</code></td>
<td class="colLast"><code><strong><a href="../../../../../com/google/javascript/rhino/jstype/JSType.html#isRecordType()">isRecordType</a></strong>()</code> </td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>boolean</code></td>
<td class="colLast"><code><strong><a href="../../../../../com/google/javascript/rhino/jstype/JSType.html#isRegexpType()">isRegexpType</a></strong>()</code> </td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>boolean</code></td>
<td class="colLast"><code><strong><a href="../../../../../com/google/javascript/rhino/jstype/JSType.html#isResolved()">isResolved</a></strong>()</code>
<div class="block">Whether the type has been resolved.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>boolean</code></td>
<td class="colLast"><code><strong><a href="../../../../../com/google/javascript/rhino/jstype/JSType.html#isString()">isString</a></strong>()</code>
<div class="block">Tests whether the type is a string (value or Object).</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>boolean</code></td>
<td class="colLast"><code><strong><a href="../../../../../com/google/javascript/rhino/jstype/JSType.html#isStringObjectType()">isStringObjectType</a></strong>()</code> </td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>boolean</code></td>
<td class="colLast"><code><strong><a href="../../../../../com/google/javascript/rhino/jstype/JSType.html#isStringValueType()">isStringValueType</a></strong>()</code> </td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>boolean</code></td>
<td class="colLast"><code><strong><a href="../../../../../com/google/javascript/rhino/jstype/JSType.html#isStruct()">isStruct</a></strong>()</code>
<div class="block">Returns true iff <code>this</code> can be a <code>struct</code>.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>boolean</code></td>
<td class="colLast"><code><strong><a href="../../../../../com/google/javascript/rhino/jstype/JSType.html#isSubtype(com.google.javascript.rhino.jstype.JSType)">isSubtype</a></strong>(<a href="../../../../../com/google/javascript/rhino/jstype/JSType.html" title="class in com.google.javascript.rhino.jstype">JSType</a> that)</code>
<div class="block">Checks whether <code>this</code> is a subtype of <code>that</code>.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>boolean</code></td>
<td class="colLast"><code><strong><a href="../../../../../com/google/javascript/rhino/jstype/JSType.html#isTemplateType()">isTemplateType</a></strong>()</code> </td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>boolean</code></td>
<td class="colLast"><code><strong><a href="../../../../../com/google/javascript/rhino/jstype/JSType.html#isTemplatizedType()">isTemplatizedType</a></strong>()</code> </td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>boolean</code></td>
<td class="colLast"><code><strong><a href="../../../../../com/google/javascript/rhino/jstype/JSType.html#isUnionType()">isUnionType</a></strong>()</code> </td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>boolean</code></td>
<td class="colLast"><code><strong><a href="../../../../../com/google/javascript/rhino/jstype/JSType.html#isUnknownType()">isUnknownType</a></strong>()</code> </td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>boolean</code></td>
<td class="colLast"><code><strong><a href="../../../../../com/google/javascript/rhino/jstype/JSType.html#isVoidType()">isVoidType</a></strong>()</code> </td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><strong><a href="../../../../../com/google/javascript/rhino/jstype/JSType.html#matchConstraint(com.google.javascript.rhino.jstype.JSType)">matchConstraint</a></strong>(<a href="../../../../../com/google/javascript/rhino/jstype/JSType.html" title="class in com.google.javascript.rhino.jstype">JSType</a> constraint)</code>
<div class="block">Modify this type so that it matches the specified type.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>boolean</code></td>
<td class="colLast"><code><strong><a href="../../../../../com/google/javascript/rhino/jstype/JSType.html#matchesInt32Context()">matchesInt32Context</a></strong>()</code>
<div class="block">This predicate is used to test whether a given type can appear in a
'Int32' context.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>boolean</code></td>
<td class="colLast"><code><strong><a href="../../../../../com/google/javascript/rhino/jstype/JSType.html#matchesNumberContext()">matchesNumberContext</a></strong>()</code>
<div class="block">This predicate is used to test whether a given type can appear in a
numeric context, such as an operand of a multiply operator.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>boolean</code></td>
<td class="colLast"><code><strong><a href="../../../../../com/google/javascript/rhino/jstype/JSType.html#matchesObjectContext()">matchesObjectContext</a></strong>()</code>
<div class="block">This predicate is used to test whether a given type can appear in an
<code>Object</code> context, such as the expression in a with statement.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>boolean</code></td>
<td class="colLast"><code><strong><a href="../../../../../com/google/javascript/rhino/jstype/JSType.html#matchesStringContext()">matchesStringContext</a></strong>()</code>
<div class="block">This predicate is used to test whether a given type can appear in a
<code>String</code> context, such as an operand of a string concat (+) operator.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>boolean</code></td>
<td class="colLast"><code><strong><a href="../../../../../com/google/javascript/rhino/jstype/JSType.html#matchesUint32Context()">matchesUint32Context</a></strong>()</code>
<div class="block">This predicate is used to test whether a given type can appear in a
'Uint32' context.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code><a href="../../../../../com/google/javascript/rhino/jstype/JSType.html" title="class in com.google.javascript.rhino.jstype">JSType</a></code></td>
<td class="colLast"><code><strong><a href="../../../../../com/google/javascript/rhino/jstype/JSType.html#resolve(com.google.javascript.rhino.ErrorReporter, com.google.javascript.rhino.jstype.StaticScope)">resolve</a></strong>(<a href="../../../../../com/google/javascript/rhino/ErrorReporter.html" title="interface in com.google.javascript.rhino">ErrorReporter</a> t,
<a href="../../../../../com/google/javascript/rhino/jstype/StaticScope.html" title="interface in com.google.javascript.rhino.jstype">StaticScope</a><<a href="../../../../../com/google/javascript/rhino/jstype/JSType.html" title="class in com.google.javascript.rhino.jstype">JSType</a>> scope)</code>
<div class="block">Resolve this type in the given scope.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code><a href="../../../../../com/google/javascript/rhino/jstype/JSType.html" title="class in com.google.javascript.rhino.jstype">JSType</a></code></td>
<td class="colLast"><code><strong><a href="../../../../../com/google/javascript/rhino/jstype/JSType.html#restrictByNotNullOrUndefined()">restrictByNotNullOrUndefined</a></strong>()</code>
<div class="block">If this is a union type, returns a union type that does not include
the null or undefined type.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>boolean</code></td>
<td class="colLast"><code><strong><a href="../../../../../com/google/javascript/rhino/jstype/JSType.html#setValidator(com.google.common.base.Predicate)">setValidator</a></strong>(com.google.common.base.Predicate<<a href="../../../../../com/google/javascript/rhino/jstype/JSType.html" title="class in com.google.javascript.rhino.jstype">JSType</a>> validator)</code>
<div class="block">Certain types have constraints on them at resolution-time.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code><a href="../../../../../com/google/javascript/rhino/jstype/TernaryValue.html" title="enum in com.google.javascript.rhino.jstype">TernaryValue</a></code></td>
<td class="colLast"><code><strong><a href="../../../../../com/google/javascript/rhino/jstype/JSType.html#testForEquality(com.google.javascript.rhino.jstype.JSType)">testForEquality</a></strong>(<a href="../../../../../com/google/javascript/rhino/jstype/JSType.html" title="class in com.google.javascript.rhino.jstype">JSType</a> that)</code>
<div class="block">Compares <code>this</code> and <code>that</code>.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>java.lang.String</code></td>
<td class="colLast"><code><strong><a href="../../../../../com/google/javascript/rhino/jstype/JSType.html#toAnnotationString()">toAnnotationString</a></strong>()</code>
<div class="block">A string representation of this type, suitable for printing
in type annotations at code generation time.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>java.lang.String</code></td>
<td class="colLast"><code><strong><a href="../../../../../com/google/javascript/rhino/jstype/JSType.html#toDebugHashCodeString()">toDebugHashCodeString</a></strong>()</code>
<div class="block">A hash code function for diagnosing complicated issues
around type-identity.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code><a href="../../../../../com/google/javascript/rhino/jstype/EnumElementType.html" title="class in com.google.javascript.rhino.jstype">EnumElementType</a></code></td>
<td class="colLast"><code><strong><a href="../../../../../com/google/javascript/rhino/jstype/JSType.html#toMaybeEnumElementType()">toMaybeEnumElementType</a></strong>()</code>
<div class="block">Downcasts this to an EnumElementType, or returns null if this is not an EnumElementType.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code><a href="../../../../../com/google/javascript/rhino/jstype/EnumType.html" title="class in com.google.javascript.rhino.jstype">EnumType</a></code></td>
<td class="colLast"><code><strong><a href="../../../../../com/google/javascript/rhino/jstype/JSType.html#toMaybeEnumType()">toMaybeEnumType</a></strong>()</code>
<div class="block">Downcasts this to an EnumType, or returns null if this is not an EnumType.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code><a href="../../../../../com/google/javascript/rhino/jstype/FunctionType.html" title="class in com.google.javascript.rhino.jstype">FunctionType</a></code></td>
<td class="colLast"><code><strong><a href="../../../../../com/google/javascript/rhino/jstype/JSType.html#toMaybeFunctionType()">toMaybeFunctionType</a></strong>()</code>
<div class="block">Downcasts this to a FunctionType, or returns null if this is not
a function.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>static <a href="../../../../../com/google/javascript/rhino/jstype/FunctionType.html" title="class in com.google.javascript.rhino.jstype">FunctionType</a></code></td>
<td class="colLast"><code><strong><a href="../../../../../com/google/javascript/rhino/jstype/JSType.html#toMaybeFunctionType(com.google.javascript.rhino.jstype.JSType)">toMaybeFunctionType</a></strong>(<a href="../../../../../com/google/javascript/rhino/jstype/JSType.html" title="class in com.google.javascript.rhino.jstype">JSType</a> type)</code>
<div class="block">Null-safe version of toMaybeFunctionType().</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code><a href="../../../../../com/google/javascript/rhino/jstype/TemplateType.html" title="class in com.google.javascript.rhino.jstype">TemplateType</a></code></td>
<td class="colLast"><code><strong><a href="../../../../../com/google/javascript/rhino/jstype/JSType.html#toMaybeTemplateType()">toMaybeTemplateType</a></strong>()</code>
<div class="block">Downcasts this to a TemplateType, or returns null if this is not
a function.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>static <a href="../../../../../com/google/javascript/rhino/jstype/TemplateType.html" title="class in com.google.javascript.rhino.jstype">TemplateType</a></code></td>
<td class="colLast"><code><strong><a href="../../../../../com/google/javascript/rhino/jstype/JSType.html#toMaybeTemplateType(com.google.javascript.rhino.jstype.JSType)">toMaybeTemplateType</a></strong>(<a href="../../../../../com/google/javascript/rhino/jstype/JSType.html" title="class in com.google.javascript.rhino.jstype">JSType</a> type)</code>
<div class="block">Null-safe version of toMaybeTemplateType().</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code><a href="../../../../../com/google/javascript/rhino/jstype/TemplatizedType.html" title="class in com.google.javascript.rhino.jstype">TemplatizedType</a></code></td>
<td class="colLast"><code><strong><a href="../../../../../com/google/javascript/rhino/jstype/JSType.html#toMaybeTemplatizedType()">toMaybeTemplatizedType</a></strong>()</code>
<div class="block">Downcasts this to a TemplatizedType, or returns null if this is not
a function.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>static <a href="../../../../../com/google/javascript/rhino/jstype/TemplatizedType.html" title="class in com.google.javascript.rhino.jstype">TemplatizedType</a></code></td>
<td class="colLast"><code><strong><a href="../../../../../com/google/javascript/rhino/jstype/JSType.html#toMaybeTemplatizedType(com.google.javascript.rhino.jstype.JSType)">toMaybeTemplatizedType</a></strong>(<a href="../../../../../com/google/javascript/rhino/jstype/JSType.html" title="class in com.google.javascript.rhino.jstype">JSType</a> type)</code>
<div class="block">Null-safe version of toMaybeTemplatizedType().</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code><a href="../../../../../com/google/javascript/rhino/jstype/UnionType.html" title="class in com.google.javascript.rhino.jstype">UnionType</a></code></td>
<td class="colLast"><code><strong><a href="../../../../../com/google/javascript/rhino/jstype/JSType.html#toMaybeUnionType()">toMaybeUnionType</a></strong>()</code>
<div class="block">Downcasts this to a UnionType, or returns null if this is not a UnionType.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code><a href="../../../../../com/google/javascript/rhino/jstype/ObjectType.html" title="class in com.google.javascript.rhino.jstype">ObjectType</a></code></td>
<td class="colLast"><code><strong><a href="../../../../../com/google/javascript/rhino/jstype/JSType.html#toObjectType()">toObjectType</a></strong>()</code>
<div class="block">Casts this to an ObjectType, or returns null if this is not an ObjectType.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>java.lang.String</code></td>
<td class="colLast"><code><strong><a href="../../../../../com/google/javascript/rhino/jstype/JSType.html#toString()">toString</a></strong>()</code>
<div class="block">A string representation of this type, suitable for printing
in warnings.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code><a href="../../../../../com/google/javascript/rhino/jstype/JSType.html" title="class in com.google.javascript.rhino.jstype">JSType</a></code></td>
<td class="colLast"><code><strong><a href="../../../../../com/google/javascript/rhino/jstype/JSType.html#unboxesTo()">unboxesTo</a></strong>()</code>
<div class="block">Turn an object type to its corresponding scalar type.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>abstract <T> T</code></td>
<td class="colLast"><code><strong><a href="../../../../../com/google/javascript/rhino/jstype/JSType.html#visit(com.google.javascript.rhino.jstype.Visitor)">visit</a></strong>(<a href="../../../../../com/google/javascript/rhino/jstype/Visitor.html" title="interface in com.google.javascript.rhino.jstype">Visitor</a><T> visitor)</code>
<div class="block">Visit this type with the given visitor.</div>
</td>
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<h3>Methods inherited from class java.lang.Object</h3>
<code>clone, finalize, getClass, notify, notifyAll, wait, wait, wait</code></li>
</ul>
</li>
</ul>
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</ul>
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<h3>Field Detail</h3>
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<h4>templateTypeMap</h4>
<pre>protected final <a href="../../../../../com/google/javascript/rhino/jstype/TemplateTypeMap.html" title="class in com.google.javascript.rhino.jstype">TemplateTypeMap</a> templateTypeMap</pre>
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<pre>public static final java.lang.String UNKNOWN_NAME</pre>
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<pre>public static final java.lang.String NOT_A_CLASS</pre>
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<pre>public static final java.lang.String NOT_A_TYPE</pre>
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<pre>public static final java.lang.String EMPTY_TYPE_COMPONENT</pre>
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<pre>public static final int ENUMDECL</pre>
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<pre>public static final int NOT_ENUMDECL</pre>
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<h4>getJSDocInfo</h4>
<pre>public <a href="../../../../../com/google/javascript/rhino/JSDocInfo.html" title="class in com.google.javascript.rhino">JSDocInfo</a> getJSDocInfo()</pre>
<div class="block">Gets the docInfo for this type. By default, documentation cannot be
attached to arbitrary types. This must be overridden for
programmer-defined types.</div>
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<a name="getDisplayName()">
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<pre>public java.lang.String getDisplayName()</pre>
<div class="block">Returns a user meaningful label for the JSType instance. For example,
Functions and Enums will return their declaration name (if they have one).
Some types will not have a meaningful display name. Calls to
hasDisplayName() will return true IFF getDisplayName() will return null
or a zero length string.</div>
<dl><dt><span class="strong">Returns:</span></dt><dd>the display name of the type, or null if one is not available</dd></dl>
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<pre>public boolean hasDisplayName()</pre>
<dl><dt><span class="strong">Returns:</span></dt><dd>true if the JSType has a user meaningful label.</dd></dl>
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<pre>public boolean hasProperty(java.lang.String pname)</pre>
<div class="block">Checks whether the property is present on the object.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>pname</code> - The property name.</dd></dl>
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<pre>public boolean isNoResolvedType()</pre>
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<pre>public boolean isNoObjectType()</pre>
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<pre>public final boolean isEmptyType()</pre>
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<pre>public boolean isNumberObjectType()</pre>
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<pre>public boolean isNumberValueType()</pre>
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<pre>public boolean isFunctionPrototypeType()</pre>
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<pre>public boolean isStringValueType()</pre>
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<pre>public final boolean isString()</pre>
<div class="block">Tests whether the type is a string (value or Object).</div>
<dl><dt><span class="strong">Returns:</span></dt><dd><code>this &lt;: (String, string)</code></dd></dl>
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<pre>public final boolean isNumber()</pre>
<div class="block">Tests whether the type is a number (value or Object).</div>
<dl><dt><span class="strong">Returns:</span></dt><dd><code>this &lt;: (Number, number)</code></dd></dl>
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<pre>public boolean isCheckedUnknownType()</pre>
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<pre>public final boolean isUnionType()</pre>
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<pre>public boolean isStruct()</pre>
<div class="block">Returns true iff <code>this</code> can be a <code>struct</code>.
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<pre>public boolean isDict()</pre>
<div class="block">Returns true iff <code>this</code> can be a <code>dict</code>.
UnionType overrides the method, assume <code>this</code> is not a union here.</div>
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<pre>public <a href="../../../../../com/google/javascript/rhino/jstype/UnionType.html" title="class in com.google.javascript.rhino.jstype">UnionType</a> toMaybeUnionType()</pre>
<div class="block">Downcasts this to a UnionType, or returns null if this is not a UnionType.
Named in honor of Haskell's Maybe type constructor.</div>
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<pre>public final boolean isGlobalThisType()</pre>
<div class="block">Returns true if this is a global this type.</div>
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<pre>public final boolean isFunctionType()</pre>
<div class="block">Returns true if toMaybeFunctionType returns a non-null FunctionType.</div>
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<pre>public <a href="../../../../../com/google/javascript/rhino/jstype/FunctionType.html" title="class in com.google.javascript.rhino.jstype">FunctionType</a> toMaybeFunctionType()</pre>
<div class="block">Downcasts this to a FunctionType, or returns null if this is not
a function.
For the purposes of this function, we define a MaybeFunctionType as any
type in the sub-lattice
{ x | LEAST_FUNCTION_TYPE <= x <= GREATEST_FUNCTION_TYPE }
This definition excludes bottom types like NoType and NoObjectType.
This definition is somewhat arbitrary and axiomatic, but this is the
definition that makes the most sense for the most callers.</div>
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<pre>public static <a href="../../../../../com/google/javascript/rhino/jstype/FunctionType.html" title="class in com.google.javascript.rhino.jstype">FunctionType</a> toMaybeFunctionType(<a href="../../../../../com/google/javascript/rhino/jstype/JSType.html" title="class in com.google.javascript.rhino.jstype">JSType</a> type)</pre>
<div class="block">Null-safe version of toMaybeFunctionType().</div>
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<pre>public final boolean isEnumElementType()</pre>
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<pre>public <a href="../../../../../com/google/javascript/rhino/jstype/EnumElementType.html" title="class in com.google.javascript.rhino.jstype">EnumElementType</a> toMaybeEnumElementType()</pre>
<div class="block">Downcasts this to an EnumElementType, or returns null if this is not an EnumElementType.</div>
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<pre>public boolean isEnumType()</pre>
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<a name="toMaybeEnumType()">
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<pre>public <a href="../../../../../com/google/javascript/rhino/jstype/EnumType.html" title="class in com.google.javascript.rhino.jstype">EnumType</a> toMaybeEnumType()</pre>
<div class="block">Downcasts this to an EnumType, or returns null if this is not an EnumType.</div>
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<pre>public boolean isRecordType()</pre>
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<pre>public final boolean isTemplatizedType()</pre>
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<pre>public <a href="../../../../../com/google/javascript/rhino/jstype/TemplatizedType.html" title="class in com.google.javascript.rhino.jstype">TemplatizedType</a> toMaybeTemplatizedType()</pre>
<div class="block">Downcasts this to a TemplatizedType, or returns null if this is not
a function.</div>
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<a name="toMaybeTemplatizedType(com.google.javascript.rhino.jstype.JSType)">
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<pre>public static <a href="../../../../../com/google/javascript/rhino/jstype/TemplatizedType.html" title="class in com.google.javascript.rhino.jstype">TemplatizedType</a> toMaybeTemplatizedType(<a href="../../../../../com/google/javascript/rhino/jstype/JSType.html" title="class in com.google.javascript.rhino.jstype">JSType</a> type)</pre>
<div class="block">Null-safe version of toMaybeTemplatizedType().</div>
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<pre>public final boolean isTemplateType()</pre>
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<a name="toMaybeTemplateType()">
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<pre>public <a href="../../../../../com/google/javascript/rhino/jstype/TemplateType.html" title="class in com.google.javascript.rhino.jstype">TemplateType</a> toMaybeTemplateType()</pre>
<div class="block">Downcasts this to a TemplateType, or returns null if this is not
a function.</div>
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<pre>public static <a href="../../../../../com/google/javascript/rhino/jstype/TemplateType.html" title="class in com.google.javascript.rhino.jstype">TemplateType</a> toMaybeTemplateType(<a href="../../../../../com/google/javascript/rhino/jstype/JSType.html" title="class in com.google.javascript.rhino.jstype">JSType</a> type)</pre>
<div class="block">Null-safe version of toMaybeTemplateType().</div>
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<pre>public boolean hasAnyTemplateTypes()</pre>
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<a name="getTemplateTypeMap()">
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<h4>getTemplateTypeMap</h4>
<pre>public <a href="../../../../../com/google/javascript/rhino/jstype/TemplateTypeMap.html" title="class in com.google.javascript.rhino.jstype">TemplateTypeMap</a> getTemplateTypeMap()</pre>
<div class="block">Returns the template type map associated with this type.</div>
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<pre>public boolean isObject()</pre>
<div class="block">Tests whether this type is an <code>Object</code>, or any subtype thereof.</div>
<dl><dt><span class="strong">Returns:</span></dt><dd><code>this &lt;: Object</code></dd></dl>
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<pre>public boolean isConstructor()</pre>
<div class="block">Whether this type is a <a href="../../../../../com/google/javascript/rhino/jstype/FunctionType.html" title="class in com.google.javascript.rhino.jstype"><code>FunctionType</code></a> that is a constructor or a
named type that points to such a type.</div>
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<pre>public boolean isNominalType()</pre>
<div class="block">Whether this type is a nominal type (a named instance object or
a named enum).</div>
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<pre>public final boolean isNominalConstructor()</pre>
<div class="block">Whether this type is the original constructor of a nominal type.
Does not include structural constructors.</div>
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<pre>public boolean isInstanceType()</pre>
<div class="block">Whether this type is an Instance object of some constructor.
Does not necessarily mean this is an <code>InstanceObjectType</code>.</div>
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<pre>public boolean isInterface()</pre>
<div class="block">Whether this type is a <a href="../../../../../com/google/javascript/rhino/jstype/FunctionType.html" title="class in com.google.javascript.rhino.jstype"><code>FunctionType</code></a> that is an interface or a named
type that points to such a type.</div>
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<pre>public boolean isOrdinaryFunction()</pre>
<div class="block">Whether this type is a <a href="../../../../../com/google/javascript/rhino/jstype/FunctionType.html" title="class in com.google.javascript.rhino.jstype"><code>FunctionType</code></a> that is an ordinary function or
a named type that points to such a type.</div>
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<pre>public final boolean isEquivalentTo(<a href="../../../../../com/google/javascript/rhino/jstype/JSType.html" title="class in com.google.javascript.rhino.jstype">JSType</a> that)</pre>
<div class="block">Checks if two types are equivalent.</div>
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<pre>public final boolean isInvariant(<a href="../../../../../com/google/javascript/rhino/jstype/JSType.html" title="class in com.google.javascript.rhino.jstype">JSType</a> that)</pre>
<div class="block">Checks if two types are invariant.</div>
<dl><dt><span class="strong">See Also:</span></dt><dd><code>EquivalenceMethod</code></dd></dl>
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<pre>public final boolean differsFrom(<a href="../../../../../com/google/javascript/rhino/jstype/JSType.html" title="class in com.google.javascript.rhino.jstype">JSType</a> that)</pre>
<div class="block">Whether this type is meaningfully different from <code>that</code> type for
the purposes of data flow analysis.
This is a trickier check than pure equality, because it has to properly
handle unknown types. See <code>EquivalenceMethod</code> for more info.</div>
<dl><dt><span class="strong">See Also:</span></dt><dd><a href="http://www.youtube.com/watch?v=_RpSv3HjpEw">Unknown unknowns</a></dd></dl>
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<pre>public static boolean isEquivalent(<a href="../../../../../com/google/javascript/rhino/jstype/JSType.html" title="class in com.google.javascript.rhino.jstype">JSType</a> typeA,
<a href="../../../../../com/google/javascript/rhino/jstype/JSType.html" title="class in com.google.javascript.rhino.jstype">JSType</a> typeB)</pre>
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<pre>public boolean equals(java.lang.Object jsType)</pre>
<dl>
<dt><strong>Overrides:</strong></dt>
<dd><code>equals</code> in class <code>java.lang.Object</code></dd>
</dl>
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<pre>public int hashCode()</pre>
<dl>
<dt><strong>Overrides:</strong></dt>
<dd><code>hashCode</code> in class <code>java.lang.Object</code></dd>
</dl>
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<pre>public final boolean matchesInt32Context()</pre>
<div class="block">This predicate is used to test whether a given type can appear in a
'Int32' context. This context includes, for example, the operands of a
bitwise or operator. Since we do not currently support integer types,
this is a synonym for <code>Number</code>.</div>
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<pre>public final boolean matchesUint32Context()</pre>
<div class="block">This predicate is used to test whether a given type can appear in a
'Uint32' context. This context includes the right-hand operand of a shift
operator.</div>
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<pre>public boolean matchesNumberContext()</pre>
<div class="block">This predicate is used to test whether a given type can appear in a
numeric context, such as an operand of a multiply operator.</div>
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<pre>public boolean matchesStringContext()</pre>
<div class="block">This predicate is used to test whether a given type can appear in a
<code>String</code> context, such as an operand of a string concat (+) operator.
All types have at least the potential for converting to <code>String</code>.
When we add externally defined types, such as a browser OM, we may choose
to add types that do not automatically convert to <code>String</code>.</div>
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<pre>public boolean matchesObjectContext()</pre>
<div class="block">This predicate is used to test whether a given type can appear in an
<code>Object</code> context, such as the expression in a with statement.
Most types we will encounter, except notably <code>null</code>, have at least
the potential for converting to <code>Object</code>. Host defined objects can
get peculiar.</div>
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<pre>public <a href="../../../../../com/google/javascript/rhino/jstype/JSType.html" title="class in com.google.javascript.rhino.jstype">JSType</a> findPropertyType(java.lang.String propertyName)</pre>
<div class="block">Coerces this type to an Object type, then gets the type of the property
whose name is given.
Unlike <a href="../../../../../com/google/javascript/rhino/jstype/ObjectType.html#getPropertyType(java.lang.String)"><code>ObjectType.getPropertyType(java.lang.String)</code></a>, returns null if the property
is not found.</div>
<dl><dt><span class="strong">Returns:</span></dt><dd>The property's type. <code>null</code> if the current type cannot
have properties, or if the type is not found.</dd></dl>
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<pre>public boolean canBeCalled()</pre>
<div class="block">This predicate is used to test whether a given type can be used as the
'function' in a function call.</div>
<dl><dt><span class="strong">Returns:</span></dt><dd><code>true</code> if this type might be callable.</dd></dl>
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<pre>public boolean canCastTo(<a href="../../../../../com/google/javascript/rhino/jstype/JSType.html" title="class in com.google.javascript.rhino.jstype">JSType</a> that)</pre>
<div class="block">Tests whether values of <code>this</code> type can be safely assigned
to values of <code>that</code> type.<p>
The default implementation verifies that <code>this</code> is a subtype
of <code>that</code>.<p></div>
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<pre>public <a href="../../../../../com/google/javascript/rhino/jstype/JSType.html" title="class in com.google.javascript.rhino.jstype">JSType</a> autoboxesTo()</pre>
<div class="block">Turn a scalar type to the corresponding object type.</div>
<dl><dt><span class="strong">Returns:</span></dt><dd>the auto-boxed type or <code>null</code> if this type is not a scalar.</dd></dl>
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<pre>public <a href="../../../../../com/google/javascript/rhino/jstype/JSType.html" title="class in com.google.javascript.rhino.jstype">JSType</a> unboxesTo()</pre>
<div class="block">Turn an object type to its corresponding scalar type.</div>
<dl><dt><span class="strong">Returns:</span></dt><dd>the unboxed type or <code>null</code> if this type does not unbox.</dd></dl>
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<a name="toObjectType()">
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<pre>public <a href="../../../../../com/google/javascript/rhino/jstype/ObjectType.html" title="class in com.google.javascript.rhino.jstype">ObjectType</a> toObjectType()</pre>
<div class="block">Casts this to an ObjectType, or returns null if this is not an ObjectType.
If this is a scalar type, it will *not* be converted to an object type.
If you want to simulate JS autoboxing or dereferencing, you should use
autoboxesTo() or dereference().</div>
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<pre>public <a href="../../../../../com/google/javascript/rhino/jstype/JSType.html" title="class in com.google.javascript.rhino.jstype">JSType</a> autobox()</pre>
<div class="block">Dereference a type for property access.
Filters null/undefined and autoboxes the resulting type.
Never returns null.</div>
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<a name="dereference()">
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<pre>public final <a href="../../../../../com/google/javascript/rhino/jstype/ObjectType.html" title="class in com.google.javascript.rhino.jstype">ObjectType</a> dereference()</pre>
<div class="block">Dereference a type for property access.
Filters null/undefined, autoboxes the resulting type, and returns it
iff it's an object.</div>
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<pre>public final boolean canTestForEqualityWith(<a href="../../../../../com/google/javascript/rhino/jstype/JSType.html" title="class in com.google.javascript.rhino.jstype">JSType</a> that)</pre>
<div class="block">Tests whether <code>this</code> and <code>that</code> are meaningfully
comparable. By meaningfully, we mean compatible types that do not lead
to step 22 of the definition of the Abstract Equality Comparison
Algorithm (11.9.3, page 55–56) of the ECMA-262 specification.<p></div>
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<pre>public <a href="../../../../../com/google/javascript/rhino/jstype/TernaryValue.html" title="enum in com.google.javascript.rhino.jstype">TernaryValue</a> testForEquality(<a href="../../../../../com/google/javascript/rhino/jstype/JSType.html" title="class in com.google.javascript.rhino.jstype">JSType</a> that)</pre>
<div class="block">Compares <code>this</code> and <code>that</code>.</div>
<dl><dt><span class="strong">Returns:</span></dt><dd><ul>
<li><a href="../../../../../com/google/javascript/rhino/jstype/TernaryValue.html#TRUE"><code>TernaryValue.TRUE</code></a> if the comparison of values of
<code>this</code> type and <code>that</code> always succeed (such as
<code>undefined</code> compared to <code>null</code>)</li>
<li><a href="../../../../../com/google/javascript/rhino/jstype/TernaryValue.html#FALSE"><code>TernaryValue.FALSE</code></a> if the comparison of values of
<code>this</code> type and <code>that</code> always fails (such as
<code>undefined</code> compared to <code>number</code>)</li>
<li><a href="../../../../../com/google/javascript/rhino/jstype/TernaryValue.html#UNKNOWN"><code>TernaryValue.UNKNOWN</code></a> if the comparison can succeed or
fail depending on the concrete values</li>
</ul></dd></dl>
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<pre>public final boolean canTestForShallowEqualityWith(<a href="../../../../../com/google/javascript/rhino/jstype/JSType.html" title="class in com.google.javascript.rhino.jstype">JSType</a> that)</pre>
<div class="block">Tests whether <code>this</code> and <code>that</code> are meaningfully
comparable using shallow comparison. By meaningfully, we mean compatible
types that are not rejected by step 1 of the definition of the Strict
Equality Comparison Algorithm (11.9.6, page 56–57) of the
ECMA-262 specification.<p></div>
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<pre>public boolean isNullable()</pre>
<div class="block">Tests whether this type is nullable.</div>
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<a name="collapseUnion()">
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<h4>collapseUnion</h4>
<pre>public <a href="../../../../../com/google/javascript/rhino/jstype/JSType.html" title="class in com.google.javascript.rhino.jstype">JSType</a> collapseUnion()</pre>
<div class="block">Gets the least supertype of this that's not a union.</div>
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<a name="getLeastSupertype(com.google.javascript.rhino.jstype.JSType)">
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<h4>getLeastSupertype</h4>
<pre>public <a href="../../../../../com/google/javascript/rhino/jstype/JSType.html" title="class in com.google.javascript.rhino.jstype">JSType</a> getLeastSupertype(<a href="../../../../../com/google/javascript/rhino/jstype/JSType.html" title="class in com.google.javascript.rhino.jstype">JSType</a> that)</pre>
<div class="block">Gets the least supertype of <code>this</code> and <code>that</code>.
The least supertype is the join (∨) or supremum of both types in the
type lattice.<p>
Examples:
<ul>
<li><code>number &#8744; *</code> = <code>*</code></li>
<li><code>number &#8744; Object</code> = <code>(number, Object)</code></li>
<li><code>Number &#8744; Object</code> = <code>Object</code></li>
</ul></div>
<dl><dt><span class="strong">Returns:</span></dt><dd><code>this &#8744; that</code></dd></dl>
</li>
</ul>
<a name="getGreatestSubtype(com.google.javascript.rhino.jstype.JSType)">
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<h4>getGreatestSubtype</h4>
<pre>public <a href="../../../../../com/google/javascript/rhino/jstype/JSType.html" title="class in com.google.javascript.rhino.jstype">JSType</a> getGreatestSubtype(<a href="../../../../../com/google/javascript/rhino/jstype/JSType.html" title="class in com.google.javascript.rhino.jstype">JSType</a> that)</pre>
<div class="block">Gets the greatest subtype of <code>this</code> and <code>that</code>.
The greatest subtype is the meet (∧) or infimum of both types in the
type lattice.<p>
Examples
<ul>
<li><code>Number &#8743; Any</code> = <code>Any</code></li>
<li><code>number &#8743; Object</code> = <code>Any</code></li>
<li><code>Number &#8743; Object</code> = <code>Number</code></li>
</ul></div>
<dl><dt><span class="strong">Returns:</span></dt><dd><code>this &#8744; that</code></dd></dl>
</li>
</ul>
<a name="getRestrictedTypeGivenToBooleanOutcome(boolean)">
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<pre>public <a href="../../../../../com/google/javascript/rhino/jstype/JSType.html" title="class in com.google.javascript.rhino.jstype">JSType</a> getRestrictedTypeGivenToBooleanOutcome(boolean outcome)</pre>
<div class="block">Computes the restricted type of this type knowing that the
<code>ToBoolean</code> predicate has a specific value. For more information
about the <code>ToBoolean</code> predicate, see
<a href="../../../../../com/google/javascript/rhino/jstype/JSType.html#getPossibleToBooleanOutcomes()"><code>getPossibleToBooleanOutcomes()</code></a>.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>outcome</code> - the value of the <code>ToBoolean</code> predicate</dd>
<dt><span class="strong">Returns:</span></dt><dd>the restricted type, or the Any Type if the underlying type could
not have yielded this ToBoolean value
TODO(user): Move this method to the SemanticRAI and use the visit
method of types to get the restricted type.</dd></dl>
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<pre>public abstract <a href="../../../../../com/google/javascript/rhino/jstype/BooleanLiteralSet.html" title="enum in com.google.javascript.rhino.jstype">BooleanLiteralSet</a> getPossibleToBooleanOutcomes()</pre>
<div class="block">Computes the set of possible outcomes of the <code>ToBoolean</code> predicate
for this type. The <code>ToBoolean</code> predicate is defined by the ECMA-262
standard, 3<sup>rd</sup> edition. Its behavior for simple types can be
summarized by the following table:
<table>
<tr><th>type</th><th>result</th></tr>
<tr><td><code>undefined</code></td><td>{false}</td></tr>
<tr><td><code>null</code></td><td>{false}</td></tr>
<tr><td><code>boolean</code></td><td>{true, false}</td></tr>
<tr><td><code>number</code></td><td>{true, false}</td></tr>
<tr><td><code>string</code></td><td>{true, false}</td></tr>
<tr><td><code>Object</code></td><td>{true}</td></tr>
</table></div>
<dl><dt><span class="strong">Returns:</span></dt><dd>the set of boolean literals for this type</dd></dl>
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<a name="getTypesUnderEquality(com.google.javascript.rhino.jstype.JSType)">
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<h4>getTypesUnderEquality</h4>
<pre>public <a href="../../../../../com/google/javascript/rhino/jstype/JSType.TypePair.html" title="class in com.google.javascript.rhino.jstype">JSType.TypePair</a> getTypesUnderEquality(<a href="../../../../../com/google/javascript/rhino/jstype/JSType.html" title="class in com.google.javascript.rhino.jstype">JSType</a> that)</pre>
<div class="block">Computes the subset of <code>this</code> and <code>that</code> types if equality
is observed. If a value <code>v1</code> of type <code>null</code> is equal to a value
<code>v2</code> of type <code>(undefined,number)</code>, we can infer that the
type of <code>v1</code> is <code>null</code> and the type of <code>v2</code> is
<code>undefined</code>.</div>
<dl><dt><span class="strong">Returns:</span></dt><dd>a pair containing the restricted type of <code>this</code> as the first
component and the restricted type of <code>that</code> as the second
element. The returned pair is never <code>null</code> even though its
components may be <code>null</code></dd></dl>
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<pre>public <a href="../../../../../com/google/javascript/rhino/jstype/JSType.TypePair.html" title="class in com.google.javascript.rhino.jstype">JSType.TypePair</a> getTypesUnderInequality(<a href="../../../../../com/google/javascript/rhino/jstype/JSType.html" title="class in com.google.javascript.rhino.jstype">JSType</a> that)</pre>
<div class="block">Computes the subset of <code>this</code> and <code>that</code> types if inequality
is observed. If a value <code>v1</code> of type <code>number</code> is not equal to a
value <code>v2</code> of type <code>(undefined,number)</code>, we can infer that the
type of <code>v1</code> is <code>number</code> and the type of <code>v2</code> is
<code>number</code> as well.</div>
<dl><dt><span class="strong">Returns:</span></dt><dd>a pair containing the restricted type of <code>this</code> as the first
component and the restricted type of <code>that</code> as the second
element. The returned pair is never <code>null</code> even though its
components may be <code>null</code></dd></dl>
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<a name="getTypesUnderShallowEquality(com.google.javascript.rhino.jstype.JSType)">
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<pre>public <a href="../../../../../com/google/javascript/rhino/jstype/JSType.TypePair.html" title="class in com.google.javascript.rhino.jstype">JSType.TypePair</a> getTypesUnderShallowEquality(<a href="../../../../../com/google/javascript/rhino/jstype/JSType.html" title="class in com.google.javascript.rhino.jstype">JSType</a> that)</pre>
<div class="block">Computes the subset of <code>this</code> and <code>that</code> types under shallow
equality.</div>
<dl><dt><span class="strong">Returns:</span></dt><dd>a pair containing the restricted type of <code>this</code> as the first
component and the restricted type of <code>that</code> as the second
element. The returned pair is never <code>null</code> even though its
components may be <code>null</code>.</dd></dl>
</li>
</ul>
<a name="getTypesUnderShallowInequality(com.google.javascript.rhino.jstype.JSType)">
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<pre>public <a href="../../../../../com/google/javascript/rhino/jstype/JSType.TypePair.html" title="class in com.google.javascript.rhino.jstype">JSType.TypePair</a> getTypesUnderShallowInequality(<a href="../../../../../com/google/javascript/rhino/jstype/JSType.html" title="class in com.google.javascript.rhino.jstype">JSType</a> that)</pre>
<div class="block">Computes the subset of <code>this</code> and <code>that</code> types under
shallow inequality.</div>
<dl><dt><span class="strong">Returns:</span></dt><dd>A pair containing the restricted type of <code>this</code> as the first
component and the restricted type of <code>that</code> as the second
element. The returned pair is never <code>null</code> even though its
components may be <code>null</code></dd></dl>
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<pre>public <a href="../../../../../com/google/javascript/rhino/jstype/JSType.html" title="class in com.google.javascript.rhino.jstype">JSType</a> restrictByNotNullOrUndefined()</pre>
<div class="block">If this is a union type, returns a union type that does not include
the null or undefined type.</div>
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<a name="isSubtype(com.google.javascript.rhino.jstype.JSType)">
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<pre>public boolean isSubtype(<a href="../../../../../com/google/javascript/rhino/jstype/JSType.html" title="class in com.google.javascript.rhino.jstype">JSType</a> that)</pre>
<div class="block">Checks whether <code>this</code> is a subtype of <code>that</code>.<p>
Subtyping rules:
<ul>
<li>(unknown) — every type is a subtype of the Unknown type.</li>
<li>(no) — the No type is a subtype of every type.</li>
<li>(no-object) — the NoObject type is a subtype of every object
type (i.e. subtypes of the Object type).</li>
<li>(ref) — a type is a subtype of itself.</li>
<li>(union-l) — A union type is a subtype of a type U if all the
union type's constituents are a subtype of U. Formally<br>
<code>(T<sub>1</sub>, &hellip;, T<sub>n</sub>) &lt;: U</code> if and only
<code>T<sub>k</sub> &lt;: U</code> for all <code>k &isin; 1..n</code>.</li>
<li>(union-r) — A type U is a subtype of a union type if it is a
subtype of one of the union type's constituents. Formally<br>
<code>U &lt;: (T<sub>1</sub>, &hellip;, T<sub>n</sub>)</code> if and only
if <code>U &lt;: T<sub>k</sub></code> for some index <code>k</code>.</li>
<li>(objects) — an Object <code>O<sub>1</sub></code> is a subtype
of an object <code>O<sub>2</sub></code> if it has more properties
than <code>O<sub>2</sub></code> and all common properties are
pairwise subtypes.</li>
</ul></div>
<dl><dt><span class="strong">Returns:</span></dt><dd><code>this &lt;: that</code></dd></dl>
</li>
</ul>
<a name="visit(com.google.javascript.rhino.jstype.Visitor)">
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<h4>visit</h4>
<pre>public abstract <T> T visit(<a href="../../../../../com/google/javascript/rhino/jstype/Visitor.html" title="interface in com.google.javascript.rhino.jstype">Visitor</a><T> visitor)</pre>
<div class="block">Visit this type with the given visitor.</div>
<dl><dt><span class="strong">Returns:</span></dt><dd>the value returned by the visitor</dd><dt><span class="strong">See Also:</span></dt><dd><a href="../../../../../com/google/javascript/rhino/jstype/Visitor.html" title="interface in com.google.javascript.rhino.jstype"><code>Visitor</code></a></dd></dl>
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<h4>forceResolve</h4>
<pre>public final <a href="../../../../../com/google/javascript/rhino/jstype/JSType.html" title="class in com.google.javascript.rhino.jstype">JSType</a> forceResolve(<a href="../../../../../com/google/javascript/rhino/ErrorReporter.html" title="interface in com.google.javascript.rhino">ErrorReporter</a> t,
<a href="../../../../../com/google/javascript/rhino/jstype/StaticScope.html" title="interface in com.google.javascript.rhino.jstype">StaticScope</a><<a href="../../../../../com/google/javascript/rhino/jstype/JSType.html" title="class in com.google.javascript.rhino.jstype">JSType</a>> scope)</pre>
<div class="block">Force this type to resolve, even if the registry is in a lazy
resolving mode.</div>
<dl><dt><span class="strong">See Also:</span></dt><dd><a href="../../../../../com/google/javascript/rhino/jstype/JSType.html#resolve(com.google.javascript.rhino.ErrorReporter, com.google.javascript.rhino.jstype.StaticScope)"><code>resolve(com.google.javascript.rhino.ErrorReporter, com.google.javascript.rhino.jstype.StaticScope<com.google.javascript.rhino.jstype.JSType>)</code></a></dd></dl>
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<h4>resolve</h4>
<pre>public final <a href="../../../../../com/google/javascript/rhino/jstype/JSType.html" title="class in com.google.javascript.rhino.jstype">JSType</a> resolve(<a href="../../../../../com/google/javascript/rhino/ErrorReporter.html" title="interface in com.google.javascript.rhino">ErrorReporter</a> t,
<a href="../../../../../com/google/javascript/rhino/jstype/StaticScope.html" title="interface in com.google.javascript.rhino.jstype">StaticScope</a><<a href="../../../../../com/google/javascript/rhino/jstype/JSType.html" title="class in com.google.javascript.rhino.jstype">JSType</a>> scope)</pre>
<div class="block">Resolve this type in the given scope.
The returned value must be equal to <code>this</code>, as defined by
<a href="../../../../../com/google/javascript/rhino/jstype/JSType.html#isEquivalentTo(com.google.javascript.rhino.jstype.JSType)"><code>isEquivalentTo(com.google.javascript.rhino.jstype.JSType)</code></a>. It may or may not be the same object. This method
may modify the internal state of <code>this</code>, as long as it does
so in a way that preserves Object equality.
For efficiency, we should only resolve a type once per compilation job.
For incremental compilations, one compilation job may need the
artifacts from a previous generation, so we will eventually need
a generational flag instead of a boolean one.</div>
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<a name="isResolved()">
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<h4>isResolved</h4>
<pre>public final boolean isResolved()</pre>
<div class="block">Whether the type has been resolved.</div>
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<a name="clearResolved()">
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<h4>clearResolved</h4>
<pre>public final void clearResolved()</pre>
<div class="block">Clears the resolved field.</div>
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<h4>setValidator</h4>
<pre>public boolean setValidator(com.google.common.base.Predicate<<a href="../../../../../com/google/javascript/rhino/jstype/JSType.html" title="class in com.google.javascript.rhino.jstype">JSType</a>> validator)</pre>
<div class="block">Certain types have constraints on them at resolution-time.
For example, a type in an <code>@extends</code> annotation must be an
object. Clients should inject a validator that emits a warning
if the type does not validate, and return false.</div>
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<a name="toString()">
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<h4>toString</h4>
<pre>public java.lang.String toString()</pre>
<div class="block">A string representation of this type, suitable for printing
in warnings.</div>
<dl>
<dt><strong>Overrides:</strong></dt>
<dd><code>toString</code> in class <code>java.lang.Object</code></dd>
</dl>
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<h4>toDebugHashCodeString</h4>
<pre>public java.lang.String toDebugHashCodeString()</pre>
<div class="block">A hash code function for diagnosing complicated issues
around type-identity.</div>
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<h4>toAnnotationString</h4>
<pre>public final java.lang.String toAnnotationString()</pre>
<div class="block">A string representation of this type, suitable for printing
in type annotations at code generation time.</div>
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<h4>matchConstraint</h4>
<pre>public void matchConstraint(<a href="../../../../../com/google/javascript/rhino/jstype/JSType.html" title="class in com.google.javascript.rhino.jstype">JSType</a> constraint)</pre>
<div class="block">Modify this type so that it matches the specified type.
This is useful for reverse type-inference, where we want to
infer that an object literal matches its constraint (much like
how the java compiler does reverse-inference to figure out generics).</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>constraint</code> - </dd></dl>
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