org.eclipse.jdt.internal.compiler.lookup
Class TypeVariableBinding

java.lang.Object
  org.eclipse.jdt.internal.compiler.lookup.Binding
      org.eclipse.jdt.internal.compiler.lookup.TypeBinding
          org.eclipse.jdt.internal.compiler.lookup.ReferenceBinding
              org.eclipse.jdt.internal.compiler.lookup.TypeVariableBinding

All Implemented Interfaces:

IDependent

Direct Known Subclasses:

CaptureBinding

public class TypeVariableBinding
extends ReferenceBinding

Binding for a type parameter, held by source/binary type or method.

Field Summary

Binding	declaringElement
TypeBinding	firstBound Denote the first explicit (binding) bound amongst the supertypes (from declaration in source) If no superclass was specified, then it denotes the first superinterface, or null if none was specified.
char[]	genericTypeSignature
int	rank
ReferenceBinding	superclass
ReferenceBinding[]	superInterfaces

Fields inherited from class org.eclipse.jdt.internal.compiler.lookup.ReferenceBinding

compoundName, fPackage, LUB_GENERIC, modifiers, sourceName

Fields inherited from class org.eclipse.jdt.internal.compiler.lookup.TypeBinding

BOOLEAN, BYTE, CHAR, DOUBLE, FLOAT, id, INT, LONG, NULL, SHORT, tagBits, VOID

Fields inherited from class org.eclipse.jdt.internal.compiler.lookup.Binding

ANY_EXCEPTION, ARRAY_TYPE, BASE_TYPE, FIELD, GENERIC_TYPE, IMPORT, LOCAL, METHOD, NO_ANNOTATIONS, NO_ELEMENT_VALUE_PAIRS, NO_EXCEPTIONS, NO_FIELDS, NO_MEMBER_TYPES, NO_METHODS, NO_PARAMETERS, NO_SUPERINTERFACES, NO_TYPE_VARIABLES, NO_TYPES, PACKAGE, PARAMETERIZED_TYPE, RAW_TYPE, TYPE, TYPE_PARAMETER, VARIABLE, WILDCARD_TYPE

Fields inherited from interface org.eclipse.jdt.internal.compiler.env.IDependent

JAR_FILE_ENTRY_SEPARATOR

Constructor Summary

TypeVariableBinding(char[] sourceName, Binding declaringElement, int rank)

Method Summary

int	boundCheck(Substitution substitution, TypeBinding argumentType) Returns true if the argument type satisfies all bounds of the type parameter
boolean	canBeInstantiated()
void	collectSubstitutes(Scope scope, TypeBinding actualType, java.util.Map substitutes, int constraint) Collect the substitutes into a map for certain type variables inside the receiver type e.g.
char[]	computeUniqueKey(boolean isLeaf)
char[]	constantPoolName() Answer the receiver's constant pool name.
java.lang.String	debugName()
TypeBinding	erasure()
char[]	genericSignature() T::Ljava/util/Map;:Ljava/io/Serializable; T:LY
char[]	genericTypeSignature() T::Ljava/util/Map;:Ljava/io/Serializable; T:LY
boolean	isErasureBoundTo(TypeBinding type) Returns true if the type variable is directly bound to a given type
boolean	isInterchangeableWith(LookupEnvironment environment, TypeVariableBinding otherVariable) Returns true if the 2 variables are playing exact same role: they have the same bounds, providing one is substituted with the other: > is interchangeable with >.
boolean	isTypeVariable() Returns true if the type was declared as a type variable
int	kind()
TypeVariableBinding	original() Returns the original type variable for a given variable.
char[]	readableName()
char[]	shortReadableName()
ReferenceBinding	superclass()
ReferenceBinding[]	superInterfaces()
java.lang.String	toString()
TypeBinding	upperBound() Upper bound doesn't perform erasure

Methods inherited from class org.eclipse.jdt.internal.compiler.lookup.ReferenceBinding

availableFields, availableMethods, binarySearch, binarySearch, canBeSeenBy, canBeSeenBy, canBeSeenBy, computeGenericTypeSignature, computeId, depth, detectAnnotationCycle, enclosingTypeAt, enumConstantCount, fieldCount, fields, findSuperTypeErasingTo, getAccessFlags, getAnnotations, getAnnotationTagBits, getExactConstructor, getExactMethod, getField, getFileName, getMemberType, getMethods, getPackage, getTypeVariable, hashCode, hasIncompatibleSuperType, hasMemberTypes, hasRestrictedAccess, implementsInterface, isAbstract, isAnnotationType, isBinaryBinding, isClass, isCompatibleWith, isDefault, isDeprecated, isEnum, isFinal, isHierarchyBeingConnected, isInterface, isPrivate, isProtected, isPublic, isStatic, isStrictfp, isSuperclassOf, isUncheckedException, isUsed, isViewedAsDeprecated, memberTypes, methods, outermostEnclosingType, qualifiedSourceName, setAnnotations, signature, sortFields, sortMethods, sourceName, syntheticEnclosingInstanceTypes, syntheticOuterLocalVariables

Methods inherited from class org.eclipse.jdt.internal.compiler.lookup.TypeBinding

capture, dimensions, enclosingType, findSuperTypeWithSameErasure, genericCast, isAnonymousType, isArrayType, isBaseType, isBoundParameterizedType, isCapture, isEquivalentTo, isGenericType, isHierarchyInconsistent, isIntersectingWith, isIntersectionType, isLocalType, isMemberType, isNestedType, isNumericType, isParameterizedType, isParameterizedWithOwnVariables, isProvablyDistinctFrom, isRawType, isReifiable, isTypeArgumentContainedBy, isTypeArgumentIntersecting, isUnboundWildcard, isWildcard, leafComponentType, needsUncheckedConversion, qualifiedPackageName, swapUnresolved, typeVariables, wellKnownType

Methods inherited from class org.eclipse.jdt.internal.compiler.lookup.Binding

computeUniqueKey, initializeDeprecatedAnnotationTagBits, isValidBinding, problemId

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, notify, notifyAll, wait, wait, wait

Field Detail

declaringElement

public Binding declaringElement

rank

public int rank

firstBound

public TypeBinding firstBound

Denote the first explicit (binding) bound amongst the supertypes (from declaration in source) If no superclass was specified, then it denotes the first superinterface, or null if none was specified.

superclass

public ReferenceBinding superclass

superInterfaces

public ReferenceBinding[] superInterfaces

genericTypeSignature

public char[] genericTypeSignature

Constructor Detail

TypeVariableBinding

public TypeVariableBinding(char[] sourceName,
                           Binding declaringElement,
                           int rank)

Method Detail

kind

public int kind()

Overrides:

kind in class TypeBinding

boundCheck

public int boundCheck(Substitution substitution,
                      TypeBinding argumentType)

Returns true if the argument type satisfies all bounds of the type parameter

canBeInstantiated

public boolean canBeInstantiated()

Overrides:

canBeInstantiated in class ReferenceBinding

See Also:

ReferenceBinding.canBeInstantiated()

collectSubstitutes

public void collectSubstitutes(Scope scope,
                               TypeBinding actualType,
                               java.util.Map substitutes,
                               int constraint)

Collect the substitutes into a map for certain type variables inside the receiver type e.g. Collection.collectSubstitutes(Collection>, Map), will populate Map with: T --> List Constraints: A << F corresponds to: F.collectSubstitutes(..., A, ..., 1) A = F corresponds to: F.collectSubstitutes(..., A, ..., 0) A >> F corresponds to: F.collectSubstitutes(..., A, ..., 2)

Overrides:

collectSubstitutes in class TypeBinding

constantPoolName

public char[] constantPoolName()

Description copied from class: TypeBinding

Answer the receiver's constant pool name. NOTE: This method should only be used during/after code gen. e.g. 'java/lang/Object'

Overrides:

constantPoolName in class ReferenceBinding

computeUniqueKey

public char[] computeUniqueKey(boolean isLeaf)

Overrides:

computeUniqueKey in class ReferenceBinding

debugName

public java.lang.String debugName()

Overrides:

debugName in class ReferenceBinding

See Also:

TypeBinding.debugName()

erasure

public TypeBinding erasure()

Overrides:

erasure in class TypeBinding

genericSignature

public char[] genericSignature()

T::Ljava/util/Map;:Ljava/io/Serializable; T:LY

genericTypeSignature

public char[] genericTypeSignature()

T::Ljava/util/Map;:Ljava/io/Serializable; T:LY

Overrides:

genericTypeSignature in class TypeBinding

isErasureBoundTo

public boolean isErasureBoundTo(TypeBinding type)

Returns true if the type variable is directly bound to a given type

isInterchangeableWith

public boolean isInterchangeableWith(LookupEnvironment environment,
                                     TypeVariableBinding otherVariable)

Returns true if the 2 variables are playing exact same role: they have the same bounds, providing one is substituted with the other: > is interchangeable with >.

isTypeVariable

public boolean isTypeVariable()

Returns true if the type was declared as a type variable

Overrides:

isTypeVariable in class TypeBinding

original

public TypeVariableBinding original()

Returns the original type variable for a given variable. Only different from receiver for type variables of generic methods of parameterized types e.g. X { U foo(V1) } --> X { String foo(V2) } and V2.original() --> V1

readableName

public char[] readableName()

Overrides:

readableName in class ReferenceBinding

See Also:

ReferenceBinding.readableName()

shortReadableName

public char[] shortReadableName()

Overrides:

shortReadableName in class ReferenceBinding

See Also:

ReferenceBinding.shortReadableName()

superclass

public ReferenceBinding superclass()

Overrides:

superclass in class ReferenceBinding

superInterfaces

public ReferenceBinding[] superInterfaces()

Overrides:

superInterfaces in class ReferenceBinding

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

See Also:

Object.toString()

upperBound

public TypeBinding upperBound()

Upper bound doesn't perform erasure