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com.sun.tools.javac.code

public abstract Class Scope

Class Inheritance

extends Object

java.lang.Object
com.sun.tools.javac.code.Scope

Known Direct Subclasses

com.sun.tools.javac.code.Scope.WriteableScope, com.sun.tools.javac.code.Scope.NamedImportScope.SingleEntryScope, com.sun.tools.javac.code.Scope.FilterImportScope, com.sun.tools.javac.code.Scope.CompoundScope

Imports

com.sun.tools.javac.code.Kinds.Kind, .Symbol.CompletionFailure, .Symbol.TypeSymbol, java.lang.ref.WeakReference, java.util.*, java.util.function.BiConsumer, .Predicate, com.sun.tools.javac.tree.JCTree.JCImport, com.sun.tools.javac.util.*, .List

A scope represents an area of visibility in a Java program. The Scope class is a container for symbols which provides efficient access to symbols given their names. Scopes are implemented as hash tables with "open addressing" and "double hashing". Scopes can be nested. Nested scopes can share their hash tables.

This is NOT part of any supported API. If you write code that depends on this, you do so at your own risk. This code and its internal interfaces are subject to change or deletion without notice.

Nested and Inner Type Summary

Modifier and Type	Class and Description
public static class	Scope.CompoundScope A class scope adds capabilities to keep track of changes in related class scopes - this allows client to realize whether a class scope has changed, either directly (because a new member has been added/removed to this scope) or indirectly (i.e. because a new member has been added/removed into a supertype scope)
private static class	Scope.Entry A class for scope entries.
public static class	Scope.ErrorScope An error scope, for which the owner should be an error symbol.
private static class	Scope.FilterImportScope
public static interface	Scope.ImportFilter
public static class	Scope.ImportScope
public static enum	Scope.LookupKind
public static class	Scope.NamedImportScope
private static class	Scope.ScopeImpl
public static interface	Scope.ScopeListener
public static class	Scope.ScopeListenerList A list of scope listeners; listeners are stored in weak references, to avoid memory leaks.
public static class	Scope.StarImportScope
public abstract static class	Scope.WriteableScope A scope into which Symbols can be added.

Field Summary

Modifier and Type	Field and Description
pack-priv Scope.ScopeListenerList	listeners A list of scopes to be notified if items are to be removed from this scope.
private static final Predicate<Symbol>	noFilter
public final Symbol	owner The scope's owner.

Constructor Summary

Access	Constructor and Description
protected	Scope(Symbol owner)

Method Summary

Modifier and Type	Method and Description
public boolean	anyMatch(Predicate<Symbol> filter) Returns true iff there is at least one Symbol in this scope matching the given filter.
public final Symbol	findFirst(Name name) Returns the first Symbol from this or outward scopes with the given name.
public Symbol	findFirst(Name name, Predicate<Symbol> sf) Returns the first Symbol from this or outward scopes with the given name that matches the given filter.
public abstract Scope	getOrigin(Symbol byName) Returns the Scope from which the given Symbol originates in this scope.
public final Iterable<Symbol>	getSymbols() Returns all Symbols in this Scope.
public final Iterable<Symbol>	getSymbols(Predicate<Symbol> sf) Returns Symbols that match the given filter.
public final Iterable<Symbol>	getSymbols(Scope.LookupKind lookupKind) Returns all Symbols in this Scope.
public abstract Iterable<Symbol>	getSymbols(Predicate<Symbol> sf, Scope.LookupKind lookupKind) Returns Symbols that match the given filter.
public final Iterable<Symbol>	getSymbolsByName(Name name) Returns Symbols with the given name.
public final Iterable<Symbol>	getSymbolsByName(final Name name, final Predicate<Symbol> sf) Returns Symbols with the given name that match the given filter.
public final Iterable<Symbol>	getSymbolsByName(Name name, Scope.LookupKind lookupKind) Returns Symbols with the given name.
public abstract Iterable<Symbol>	getSymbolsByName(final Name name, final Predicate<Symbol> sf, final Scope.LookupKind lookupKind) Returns Symbols with the given name that match the given filter.
public boolean	includes(final Symbol sym) Returns true iff the given Symbol is in this scope or any outward scope.
public boolean	includes(final Symbol sym, Scope.LookupKind lookupKind) Returns true iff the given Symbol is in this scope, optionally checking outward scopes.
public boolean	isEmpty() Returns true iff this scope does not contain any Symbol.
public abstract boolean	isStaticallyImported(Symbol byName) Returns true iff the given Symbol is part of this scope due to a static import.

Inherited from java.lang.Object:: clone equals finalize getClass hashCode notify notifyAll toString wait wait wait