Class JSTypeRegistry
- java.lang.Object
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- com.google.javascript.rhino.jstype.JSTypeRegistry
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public final class JSTypeRegistry extends java.lang.Object
The type registry is used to resolve named types.This class is not thread-safe.
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Nested Class Summary
Nested Classes Modifier and Type Class Description static class
JSTypeRegistry.PropDefinitionKind
A tristate value returned from canPropertyBeDefined.
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Field Summary
Fields Modifier and Type Field Description static java.lang.String
OBJECT_ELEMENT_TEMPLATE
Deprecated.
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Constructor Summary
Constructors Constructor Description JSTypeRegistry(ErrorReporter reporter)
JSTypeRegistry(ErrorReporter reporter, java.util.Set<java.lang.String> forwardDeclaredTypes)
Constructs a new type registry populated with the built-in types.
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description JSType
buildRecordTypeFromObject(ObjectType objType)
JSTypeRegistry.PropDefinitionKind
canPropertyBeDefined(JSType type, java.lang.String propertyName)
Returns whether the given property can possibly be set on the given type.ObjectType
createAnonymousObjectType(@Nullable JSDocInfo info)
Create an anonymous object type.FunctionType
createConstructorType(java.lang.String name, Node source, java.util.List<FunctionType.Parameter> parameters, JSType returnType, @Nullable com.google.common.collect.ImmutableList<TemplateType> templateKeys, boolean isAbstract)
Creates a constructor function type.FunctionType
createFunctionType(JSType returnType, JSType... parameterTypes)
Creates a function type.FunctionType
createFunctionType(JSType returnType, java.util.List<FunctionType.Parameter> parameters)
JSType
createFunctionTypeWithInstanceType(ObjectType instanceType, JSType returnType, java.util.List<JSType> parameterTypes)
Creates a function type in whichthis
refers to an object instance.FunctionType
createFunctionTypeWithNewReturnType(FunctionType existingFunctionType, JSType returnType)
Creates a new function type based on an existing function type but with a new return type.FunctionType
createFunctionTypeWithVarArgs(JSType returnType, JSType... parameterTypes)
Creates a function type.NamedType
createNamedType(StaticTypedScope scope, java.lang.String reference, java.lang.String sourceName, int lineno, int charno)
Creates a named type.JSType
createNullableType(JSType type)
Creates a type representing nullable values of the given type.ObjectType
createObjectType(java.lang.String name, ObjectType implicitPrototype)
Create an object type.JSType
createOptionalNullableType(JSType type)
Creates a nullable and undefine-able value of the given type.com.google.common.collect.ImmutableList<FunctionType.Parameter>
createOptionalParameters(JSType... parameterTypes)
Creates a tree hierarchy representing a typed parameter list in which every parameter is optional.JSType
createOptionalType(JSType type)
Creates a type representing optional values of the given type.com.google.common.collect.ImmutableList<FunctionType.Parameter>
createParameters(JSType... parameterTypes)
Creates a tree hierarchy representing a typed argument list.com.google.common.collect.ImmutableList<FunctionType.Parameter>
createParametersWithVarArgs(JSType... parameterTypes)
Creates a tree hierarchy representing a typed argument list.JSType
createRecordType(java.util.Map<java.lang.String,? extends JSType> props)
StaticTypedScope
createScopeWithTemplates(StaticTypedScope scope, java.lang.Iterable<TemplateType> templates)
Returns a new scope that includes the given template names for type resolution purposes.TemplateType
createTemplateType(java.lang.String name)
TemplateType
createTemplateType(java.lang.String name, JSType bound)
TemplateType
createTemplateTypeWithTransformation(java.lang.String name, Node expr)
TemplatizedType
createTemplatizedType(ObjectType baseType, com.google.common.collect.ImmutableList<JSType> templatizedTypes)
Creates a templatized instance of the specified type.TemplatizedType
createTemplatizedType(ObjectType baseType, JSType... templatizedTypes)
Creates a templatized instance of the specified type.TemplatizedType
createTemplatizedType(ObjectType baseType, java.util.Map<TemplateType,JSType> templatizedTypes)
Creates a templatized instance of the specified type.JSType
createTypeFromCommentNode(Node n)
JSType
createTypeFromCommentNode(Node n, java.lang.String sourceName, @Nullable StaticTypedScope scope)
Creates a JSType from the nodes representing a type.JSType
createUnionType(JSType... variants)
Creates a union type whose variants are the arguments.JSType
createUnionType(JSTypeNative... variants)
Creates a union type whose variants are the built-in types specified by the arguments.JSType
createUnionType(java.util.List<? extends JSType> variants)
boolean
declareType(StaticScope scope, java.lang.String name, JSType type)
Records declared global type names.boolean
declareTypeForExactScope(StaticScope scope, java.lang.String name, JSType type)
Records declared global type names.JSType
evaluateTypeExpression(JSTypeExpression expr, StaticTypedScope scope)
JSType
evaluateTypeExpressionInGlobalScope(JSTypeExpression expr)
TemplateType
getArrayElementKey()
Returns the template variable for the element type of Arrays.TemplateType
getAsyncIterableTemplate()
Returns the template variable for the AsyncIterable interface.TemplateType
getAsyncIteratorValueTemplate()
Returns the template variable for the AsyncIterator interface.java.lang.Iterable<ObjectType>
getEachReferenceTypeWithProperty(java.lang.String propertyName)
Returns each reference type that has a propertypropertyName
defined on it.TemplateTypeMap
getEmptyTemplateTypeMap()
ErrorReporter
getErrorReporter()
TemplateType
getGeneratorValueTemplate()
Return the value template variable for the Generator interface.JSType
getGlobalType(java.lang.String jsTypeName)
TemplateType
getIIterableResultTemplateKey()
TemplateType
getIterableTemplate()
TemplateType
getIteratorIterableTemplateKey()
TemplateType
getIteratorValueTemplate()
Return the value template variable for the Iterator interface.TemplateType
getIThenableTemplate()
FunctionType
getNativeFunctionType(JSTypeNative typeId)
ObjectType
getNativeObjectType(JSTypeNative typeId)
JSType
getNativeType(JSTypeNative typeId)
TemplateType
getObjectElementKey()
TemplateType
getObjectIndexKey()
java.lang.String
getReadableTypeName(Node n)
First dereferences the JSType to remove null/undefined then returns a human-readable type namejava.lang.String
getReadableTypeNameNoDeref(Node n)
TemplateType
getReadonlyArrayElementKey()
Returns the template variable for the element type of ReadonlyArrays.TemplateType
getReadonlyMapKey()
Returns the template variable for the key type of ReadonlyMaps.TemplateType
getReadonlyMapValue()
Returns the template variable for the value type of ReadonlyMaps.JSTypeResolver
getResolver()
JSType
getType(@Nullable StaticScope scope, java.lang.String jsTypeName)
Looks up a native type by name.JSType
getType(StaticTypedScope scope, java.lang.String jsTypeName, java.lang.String sourceName, int lineno, int charno)
Looks up a type by name.void
identifyNonNullableName(@Nullable StaticScope scope, java.lang.String name)
Identifies the name of a typedef or enum before we actually declare it.boolean
isForwardDeclaredType(java.lang.String name)
Whether this is a forward-declared type name.boolean
isNonNullableName(StaticScope scope, java.lang.String name)
Identifies the name of a typedef or enum before we actually declare it.@Nullable com.google.common.collect.ImmutableList<TemplateType>
maybeGetTemplateTypesOfBuiltin(StaticScope scope, java.lang.String fnName)
Returns an immutable list of template types of the given builtin.void
overwriteDeclaredType(StaticScope scope, java.lang.String name, JSType type)
Overrides a declared global type name.void
registerLegacyClosureNamespace(java.lang.String moduleName)
Registers a goog.provide or legacy goog.module namespace with the type registryvoid
registerNonLegacyClosureNamespace(java.lang.String moduleName, Node definitionNode, JSType type)
Registers a goog.module namespace (that does not have goog.module.declareLegacyNamespace)void
registerPropertyOnType(java.lang.String propertyName, JSType type)
Tells the type system thatowner
may have a property namedpropertyName
.void
registerTemplateTypeNamesInScope(java.lang.Iterable<TemplateType> keys, Node scopeRoot)
Registers template types on the given scope root.void
resetImplicitPrototype(JSType type, ObjectType newImplicitProto)
Set the implicit prototype if it's possible to do so.@Nullable JSType
resolveViaClosureNamespace(java.lang.String reference)
Resolves a named type by checking for the longest prefix that matches some Closure namespace, if any, then attempting to resolve via properties based on the type of the `exports` object in that namespace.
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Field Detail
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OBJECT_ELEMENT_TEMPLATE
@Deprecated public static final java.lang.String OBJECT_ELEMENT_TEMPLATE
Deprecated.- See Also:
- Constant Field Values
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Constructor Detail
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JSTypeRegistry
public JSTypeRegistry(ErrorReporter reporter)
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JSTypeRegistry
public JSTypeRegistry(ErrorReporter reporter, java.util.Set<java.lang.String> forwardDeclaredTypes)
Constructs a new type registry populated with the built-in types.
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Method Detail
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getArrayElementKey
public TemplateType getArrayElementKey()
Returns the template variable for the element type of Arrays.
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getReadonlyArrayElementKey
public TemplateType getReadonlyArrayElementKey()
Returns the template variable for the element type of ReadonlyArrays.
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getReadonlyMapKey
public TemplateType getReadonlyMapKey()
Returns the template variable for the key type of ReadonlyMaps.
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getReadonlyMapValue
public TemplateType getReadonlyMapValue()
Returns the template variable for the value type of ReadonlyMaps.
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getObjectElementKey
public TemplateType getObjectElementKey()
- Returns:
- The template variable corresponding to the property value type for Javascript Objects and Arrays.
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getObjectIndexKey
public TemplateType getObjectIndexKey()
- Returns:
- The template variable corresponding to the property key type of the built-in Javascript object.
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getIterableTemplate
public TemplateType getIterableTemplate()
- Returns:
- The template variable for the Iterable interface.
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getIteratorIterableTemplateKey
public TemplateType getIteratorIterableTemplateKey()
- Returns:
- The template variable for the IteratorIterable interface.
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getIIterableResultTemplateKey
public TemplateType getIIterableResultTemplateKey()
- Returns:
- The template variable for the IteratorIterable interface.
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getIteratorValueTemplate
public TemplateType getIteratorValueTemplate()
Return the value template variable for the Iterator interface.
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getGeneratorValueTemplate
public TemplateType getGeneratorValueTemplate()
Return the value template variable for the Generator interface.
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getAsyncIterableTemplate
public TemplateType getAsyncIterableTemplate()
Returns the template variable for the AsyncIterable interface.
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getAsyncIteratorValueTemplate
public TemplateType getAsyncIteratorValueTemplate()
Returns the template variable for the AsyncIterator interface.
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getIThenableTemplate
public TemplateType getIThenableTemplate()
- Returns:
- The template variable for the IThenable interface.
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maybeGetTemplateTypesOfBuiltin
public @Nullable com.google.common.collect.ImmutableList<TemplateType> maybeGetTemplateTypesOfBuiltin(StaticScope scope, java.lang.String fnName)
Returns an immutable list of template types of the given builtin.
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getErrorReporter
public ErrorReporter getErrorReporter()
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resolveViaClosureNamespace
public @Nullable JSType resolveViaClosureNamespace(java.lang.String reference)
Resolves a named type by checking for the longest prefix that matches some Closure namespace, if any, then attempting to resolve via properties based on the type of the `exports` object in that namespace.
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registerPropertyOnType
public void registerPropertyOnType(java.lang.String propertyName, JSType type)
Tells the type system thatowner
may have a property namedpropertyName
. This allows the registry to keep track of what types a property is defined upon.This is NOT the same as saying that
owner
must have a property named type. ObjectType#hasProperty attempts to minimize false positives ("if we're not sure, then don't type check this property"). The type registry, on the other hand, should attempt to minimize false negatives ("if this property is assigned anywhere in the program, it must show up in the type registry").
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canPropertyBeDefined
public JSTypeRegistry.PropDefinitionKind canPropertyBeDefined(JSType type, java.lang.String propertyName)
Returns whether the given property can possibly be set on the given type.
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getEachReferenceTypeWithProperty
public java.lang.Iterable<ObjectType> getEachReferenceTypeWithProperty(java.lang.String propertyName)
Returns each reference type that has a propertypropertyName
defined on it.Unlike most types in our type system, the collection of types returned will not be collapsed. This means that if a type is defined on
Object
and onArray
, this method must return[Object, Array]
. It would not be correct to collapse them to[Object]
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declareType
public boolean declareType(StaticScope scope, java.lang.String name, JSType type)
Records declared global type names. This makes resolution faster and more robust in the common case.- Parameters:
name
- The name of the type to be recorded.type
- The actual type being associated with the name.- Returns:
- True if this name is not already defined, false otherwise.
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declareTypeForExactScope
public boolean declareTypeForExactScope(StaticScope scope, java.lang.String name, JSType type)
Records declared global type names. This makes resolution faster and more robust in the common case.- Parameters:
name
- The name of the type to be recorded.type
- The actual type being associated with the name.- Returns:
- True if this name is not already defined, false otherwise.
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overwriteDeclaredType
public void overwriteDeclaredType(StaticScope scope, java.lang.String name, JSType type)
Overrides a declared global type name. Throws an exception if this type name hasn't been declared yet.
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isForwardDeclaredType
public boolean isForwardDeclaredType(java.lang.String name)
Whether this is a forward-declared type name.
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getReadableTypeName
public java.lang.String getReadableTypeName(Node n)
First dereferences the JSType to remove null/undefined then returns a human-readable type name
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getReadableTypeNameNoDeref
public java.lang.String getReadableTypeNameNoDeref(Node n)
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getGlobalType
public JSType getGlobalType(java.lang.String jsTypeName)
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getType
public JSType getType(@Nullable StaticScope scope, java.lang.String jsTypeName)
Looks up a native type by name.- Parameters:
jsTypeName
- The name string.- Returns:
- the corresponding JSType object or
null
it cannot be found
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getType
public JSType getType(StaticTypedScope scope, java.lang.String jsTypeName, java.lang.String sourceName, int lineno, int charno)
Looks up a type by name. To allow for forward references to types, an unrecognized string has to be bound to a NamedType object that will be resolved later.- Parameters:
scope
- A scope for doing type name resolution.jsTypeName
- The name string.sourceName
- The name of the source file where this reference appears.lineno
- The line number of the reference.- Returns:
- a NamedType if the string argument is not one of the known types, otherwise the corresponding JSType object.
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getNativeType
public JSType getNativeType(JSTypeNative typeId)
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getNativeObjectType
public ObjectType getNativeObjectType(JSTypeNative typeId)
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getNativeFunctionType
public FunctionType getNativeFunctionType(JSTypeNative typeId)
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getResolver
public JSTypeResolver getResolver()
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evaluateTypeExpressionInGlobalScope
public JSType evaluateTypeExpressionInGlobalScope(JSTypeExpression expr)
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createOptionalType
public JSType createOptionalType(JSType type)
Creates a type representing optional values of the given type.- Returns:
- the union of the type and the void type
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createNullableType
public JSType createNullableType(JSType type)
Creates a type representing nullable values of the given type.- Returns:
- the union of the type and the Null type
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createOptionalNullableType
public JSType createOptionalNullableType(JSType type)
Creates a nullable and undefine-able value of the given type.- Returns:
- The union of the type and null and undefined.
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createUnionType
public JSType createUnionType(JSType... variants)
Creates a union type whose variants are the arguments.
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createUnionType
public JSType createUnionType(JSTypeNative... variants)
Creates a union type whose variants are the built-in types specified by the arguments.
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createFunctionType
public FunctionType createFunctionType(JSType returnType, JSType... parameterTypes)
Creates a function type.- Parameters:
returnType
- the function's return typeparameterTypes
- the parameters' types
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createFunctionType
public FunctionType createFunctionType(JSType returnType, java.util.List<FunctionType.Parameter> parameters)
- Parameters:
parameters
- the function's parameters ornull
to indicate that the parameter types are unknown.returnType
- the function's return type ornull
to indicate that the return type is unknown.
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createFunctionTypeWithVarArgs
public FunctionType createFunctionTypeWithVarArgs(JSType returnType, JSType... parameterTypes)
Creates a function type. The last parameter type of the function is considered a variable length argument.- Parameters:
returnType
- the function's return typeparameterTypes
- the parameters' types
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createFunctionTypeWithInstanceType
public JSType createFunctionTypeWithInstanceType(ObjectType instanceType, JSType returnType, java.util.List<JSType> parameterTypes)
Creates a function type in whichthis
refers to an object instance.- Parameters:
instanceType
- the type ofthis
returnType
- the function's return typeparameterTypes
- the parameters' types
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createParameters
public com.google.common.collect.ImmutableList<FunctionType.Parameter> createParameters(JSType... parameterTypes)
Creates a tree hierarchy representing a typed argument list.- Parameters:
parameterTypes
- the parameter types.- Returns:
- a tree hierarchy representing a typed argument list.
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createParametersWithVarArgs
public com.google.common.collect.ImmutableList<FunctionType.Parameter> createParametersWithVarArgs(JSType... parameterTypes)
Creates a tree hierarchy representing a typed argument list. The last parameter type is considered a variable length argument.- Parameters:
parameterTypes
- the parameter types. The last element of this array is considered a variable length argument.- Returns:
- a tree hierarchy representing a typed argument list.
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createOptionalParameters
public com.google.common.collect.ImmutableList<FunctionType.Parameter> createOptionalParameters(JSType... parameterTypes)
Creates a tree hierarchy representing a typed parameter list in which every parameter is optional.
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createFunctionTypeWithNewReturnType
public FunctionType createFunctionTypeWithNewReturnType(FunctionType existingFunctionType, JSType returnType)
Creates a new function type based on an existing function type but with a new return type.- Parameters:
existingFunctionType
- the existing function type.returnType
- the new return type.
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buildRecordTypeFromObject
public JSType buildRecordTypeFromObject(ObjectType objType)
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createRecordType
public JSType createRecordType(java.util.Map<java.lang.String,? extends JSType> props)
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createObjectType
public ObjectType createObjectType(java.lang.String name, ObjectType implicitPrototype)
Create an object type.
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createAnonymousObjectType
public ObjectType createAnonymousObjectType(@Nullable JSDocInfo info)
Create an anonymous object type.- Parameters:
info
- Used to mark object literals as structs; can benull
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resetImplicitPrototype
public void resetImplicitPrototype(JSType type, ObjectType newImplicitProto)
Set the implicit prototype if it's possible to do so. There are a few different reasons why this could be a no-op: for example, numbers can't be implicit prototypes, and we don't want to change the implicit prototype if other classes have already subclassed this one.
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createConstructorType
public FunctionType createConstructorType(java.lang.String name, Node source, java.util.List<FunctionType.Parameter> parameters, JSType returnType, @Nullable com.google.common.collect.ImmutableList<TemplateType> templateKeys, boolean isAbstract)
Creates a constructor function type.- Parameters:
name
- the function's name ornull
to indicate that the function is anonymous.source
- the node defining this function. Its type (Node.getToken()
()}) must beToken.FUNCTION
.parameters
- the function's parameters ornull
to indicate that the parameter types are unknown.returnType
- the function's return type ornull
to indicate that the return type is unknown.templateKeys
- the templatized types for the class.isAbstract
- whether the function type represents an abstract class
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createTemplateType
public TemplateType createTemplateType(java.lang.String name)
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createTemplateType
public TemplateType createTemplateType(java.lang.String name, JSType bound)
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createTemplateTypeWithTransformation
public TemplateType createTemplateTypeWithTransformation(java.lang.String name, Node expr)
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getEmptyTemplateTypeMap
public TemplateTypeMap getEmptyTemplateTypeMap()
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createTemplatizedType
public TemplatizedType createTemplatizedType(ObjectType baseType, com.google.common.collect.ImmutableList<JSType> templatizedTypes)
Creates a templatized instance of the specified type. Only ObjectTypes can currently be templatized; extend the logic in this function when more types can be templatized.- Parameters:
baseType
- the type to be templatized.templatizedTypes
- a list of the template JSTypes. Will be matched by list order to the template keys on the base type.
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createTemplatizedType
public TemplatizedType createTemplatizedType(ObjectType baseType, java.util.Map<TemplateType,JSType> templatizedTypes)
Creates a templatized instance of the specified type. Only ObjectTypes can currently be templatized; extend the logic in this function when more types can be templatized.- Parameters:
baseType
- the type to be templatized.templatizedTypes
- a map from TemplateType to corresponding JSType value. Any unfilled TemplateTypes on the baseType that are *not* contained in this map will have UNKNOWN_TYPE used as their value.
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createTemplatizedType
public TemplatizedType createTemplatizedType(ObjectType baseType, JSType... templatizedTypes)
Creates a templatized instance of the specified type. Only ObjectTypes can currently be templatized; extend the logic in this function when more types can be templatized.- Parameters:
baseType
- the type to be templatized.templatizedTypes
- a list of the template JSTypes. Will be matched by list order to the template keys on the base type.
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createNamedType
public NamedType createNamedType(StaticTypedScope scope, java.lang.String reference, java.lang.String sourceName, int lineno, int charno)
Creates a named type.
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identifyNonNullableName
public void identifyNonNullableName(@Nullable StaticScope scope, java.lang.String name)
Identifies the name of a typedef or enum before we actually declare it.
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isNonNullableName
public boolean isNonNullableName(StaticScope scope, java.lang.String name)
Identifies the name of a typedef or enum before we actually declare it.
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evaluateTypeExpression
public JSType evaluateTypeExpression(JSTypeExpression expr, StaticTypedScope scope)
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createTypeFromCommentNode
public JSType createTypeFromCommentNode(Node n, java.lang.String sourceName, @Nullable StaticTypedScope scope)
Creates a JSType from the nodes representing a type.- Parameters:
n
- The node with type info.sourceName
- The source file name.scope
- A scope for doing type name lookups.
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registerTemplateTypeNamesInScope
public void registerTemplateTypeNamesInScope(java.lang.Iterable<TemplateType> keys, Node scopeRoot)
Registers template types on the given scope root. This takes a Node rather than a StaticScope because at the time it is called, the scope has not yet been created.
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createScopeWithTemplates
public StaticTypedScope createScopeWithTemplates(StaticTypedScope scope, java.lang.Iterable<TemplateType> templates)
Returns a new scope that includes the given template names for type resolution purposes.
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registerNonLegacyClosureNamespace
public void registerNonLegacyClosureNamespace(java.lang.String moduleName, Node definitionNode, JSType type)
Registers a goog.module namespace (that does not have goog.module.declareLegacyNamespace)This allows JSTypeRegistry to resolve types that refer to goog.modules by namespace. These have unique handling because they exist only in the type space and do not have a corresponding value space value.
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registerLegacyClosureNamespace
public void registerLegacyClosureNamespace(java.lang.String moduleName)
Registers a goog.provide or legacy goog.module namespace with the type registry
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