Class BooleanType
java.lang.Object
com.google.javascript.rhino.jstype.JSType
com.google.javascript.rhino.jstype.BooleanType
- All Implemented Interfaces:
Serializable
Boolean type.
- See Also:
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Nested Class Summary
Nested classes/interfaces inherited from class com.google.javascript.rhino.jstype.JSType
JSType.TypePair
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Field Summary
Fields inherited from class com.google.javascript.rhino.jstype.JSType
EMPTY_TYPE_COMPONENT, ENUMDECL, NOT_A_CLASS, NOT_A_TYPE, NOT_ENUMDECL, templateTypeMap, UNKNOWN_NAME
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Method Summary
Modifier and TypeMethodDescriptionTurn a scalar type to the corresponding object type.Returns a user meaningful label for the JSType instance.Computes the set of possible outcomes of theToBoolean
predicate for this type.boolean
boolean
boolean
Tests whether this type is nullable.boolean
This predicate is used to test whether a given type can appear in a numeric context, such as an operand of a multiply operator.boolean
This predicate is used to test whether a given type can appear in anObject
context, such as the expression in a with statement.boolean
This predicate is used to test whether a given type can appear in aString
context, such as an operand of a string concat (+) operator.testForEquality
(JSType that) Comparesthis
andthat
.<T> T
Visit this type with the given visitor.Methods inherited from class com.google.javascript.rhino.jstype.JSType
autobox, canBeCalled, canCastTo, canTestForEqualityWith, canTestForShallowEqualityWith, clearResolved, collapseUnion, dereference, differsFrom, equals, findPropertyType, forceResolve, getGreatestSubtype, getJSDocInfo, getLeastSupertype, getRestrictedTypeGivenToBooleanOutcome, getTemplateTypeMap, getTypesUnderEquality, getTypesUnderInequality, getTypesUnderShallowEquality, getTypesUnderShallowInequality, hasAnyTemplateTypes, hashCode, hasProperty, isAllType, isArrayType, isBooleanObjectType, isCheckedUnknownType, isConstructor, isDateType, isDict, isEmptyType, isEnumElementType, isEnumType, isEquivalent, isEquivalentTo, isFunctionPrototypeType, isFunctionType, isGlobalThisType, isInstanceType, isInterface, isInvariant, isNominalConstructor, isNominalType, isNoObjectType, isNoResolvedType, isNoType, isNullType, isNumber, isNumberObjectType, isNumberValueType, isObject, isOrdinaryFunction, isRecordType, isRegexpType, isResolved, isString, isStringObjectType, isStringValueType, isStruct, isSubtype, isTemplateType, isTemplatizedType, isUnionType, isUnknownType, isVoidType, matchConstraint, matchesInt32Context, matchesUint32Context, resolve, restrictByNotNullOrUndefined, setValidator, toAnnotationString, toDebugHashCodeString, toMaybeEnumElementType, toMaybeEnumType, toMaybeFunctionType, toMaybeFunctionType, toMaybeTemplateType, toMaybeTemplateType, toMaybeTemplatizedType, toMaybeTemplatizedType, toMaybeUnionType, toObjectType, toString, unboxesTo
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Method Details
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isNullable
public boolean isNullable()Description copied from class:JSType
Tests whether this type is nullable.- Overrides:
isNullable
in classJSType
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testForEquality
Description copied from class:JSType
Comparesthis
andthat
.- Overrides:
testForEquality
in classJSType
- Returns:
TernaryValue.TRUE
if the comparison of values ofthis
type andthat
always succeed (such asundefined
compared tonull
)TernaryValue.FALSE
if the comparison of values ofthis
type andthat
always fails (such asundefined
compared tonumber
)TernaryValue.UNKNOWN
if the comparison can succeed or fail depending on the concrete values
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isBooleanValueType
public boolean isBooleanValueType()- Overrides:
isBooleanValueType
in classJSType
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matchesNumberContext
public boolean matchesNumberContext()Description copied from class:JSType
This predicate is used to test whether a given type can appear in a numeric context, such as an operand of a multiply operator.- Overrides:
matchesNumberContext
in classJSType
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matchesStringContext
public boolean matchesStringContext()Description copied from class:JSType
This predicate is used to test whether a given type can appear in aString
context, such as an operand of a string concat (+) operator. All types have at least the potential for converting toString
. When we add externally defined types, such as a browser OM, we may choose to add types that do not automatically convert toString
.- Overrides:
matchesStringContext
in classJSType
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matchesObjectContext
public boolean matchesObjectContext()Description copied from class:JSType
This predicate is used to test whether a given type can appear in anObject
context, such as the expression in a with statement. Most types we will encounter, except notablynull
, have at least the potential for converting toObject
. Host defined objects can get peculiar.- Overrides:
matchesObjectContext
in classJSType
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autoboxesTo
Description copied from class:JSType
Turn a scalar type to the corresponding object type.- Overrides:
autoboxesTo
in classJSType
- Returns:
- the auto-boxed type or
null
if this type is not a scalar.
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getDisplayName
Description copied from class:JSType
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.- Overrides:
getDisplayName
in classJSType
- Returns:
- the display name of the type, or null if one is not available
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getPossibleToBooleanOutcomes
Description copied from class:JSType
Computes the set of possible outcomes of theToBoolean
predicate for this type. TheToBoolean
predicate is defined by the ECMA-262 standard, 3rd edition. Its behavior for simple types can be summarized by the following table:type result undefined
{false} null
{false} boolean
{true, false} number
{true, false} string
{true, false} Object
{true} - Specified by:
getPossibleToBooleanOutcomes
in classJSType
- Returns:
- the set of boolean literals for this type
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visit
Description copied from class:JSType
Visit this type with the given visitor. -
hasDisplayName
public boolean hasDisplayName()- Overrides:
hasDisplayName
in classJSType
- Returns:
- true if the JSType has a user meaningful label.
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