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Closure Compiler is a JavaScript optimizing compiler. It parses your
JavaScript, analyzes it, removes dead code and rewrites and minimizes
what's left. It also checks syntax, variable references, and types, and
warns about common JavaScript pitfalls. It is used in many of Google's
JavaScript apps, including Gmail, Google Web Search, Google Maps, and
Google Docs.
/*
*
* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is Rhino code, released
* May 6, 1999.
*
* The Initial Developer of the Original Code is
* Netscape Communications Corporation.
* Portions created by the Initial Developer are Copyright (C) 1997-1999
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Bob Jervis
* Google Inc.
*
* Alternatively, the contents of this file may be used under the terms of
* the GNU General Public License Version 2 or later (the "GPL"), in which
* case the provisions of the GPL are applicable instead of those above. If
* you wish to allow use of your version of this file only under the terms of
* the GPL and not to allow others to use your version of this file under the
* MPL, indicate your decision by deleting the provisions above and replacing
* them with the notice and other provisions required by the GPL. If you do
* not delete the provisions above, a recipient may use your version of this
* file under either the MPL or the GPL.
*
* ***** END LICENSE BLOCK ***** */
package com.google.javascript.rhino.jstype;
import static com.google.common.base.Preconditions.checkNotNull;
import com.google.common.base.Predicate;
import com.google.common.collect.ImmutableList;
import com.google.javascript.rhino.ErrorReporter;
import com.google.javascript.rhino.JSDocInfo;
import com.google.javascript.rhino.Node;
import java.util.Collections;
/**
* An object type which uses composition to delegate all calls.
*
* @see NamedType
* @see TemplatizedType
*
*/
public class ProxyObjectType extends ObjectType {
private static final long serialVersionUID = 1L;
private static final JSTypeClass TYPE_CLASS = JSTypeClass.PROXY_OBJECT;
private JSType referencedType;
private ObjectType referencedObjType;
ProxyObjectType(JSTypeRegistry registry, JSType referencedType) {
this(registry, referencedType, null);
}
ProxyObjectType(JSTypeRegistry registry, JSType referencedType,
TemplateTypeMap templateTypeMap) {
super(registry, templateTypeMap);
setReferencedType(checkNotNull(referencedType));
registry.getResolver().resolveIfClosed(this, TYPE_CLASS);
}
@Override
JSTypeClass getTypeClass() {
return TYPE_CLASS;
}
@Override
public final HasPropertyKind getPropertyKind(String propertyName, boolean autobox) {
return referencedType.getPropertyKind(propertyName, autobox);
}
@Override
final PropertyMap getPropertyMap() {
return referencedObjType == null
? PropertyMap.immutableEmptyMap() : referencedObjType.getPropertyMap();
}
final JSType getReferencedTypeInternal() {
return referencedType;
}
final ObjectType getReferencedObjTypeInternal() {
return referencedObjType;
}
final void setReferencedType(JSType referencedType) {
checkNotNull(referencedType);
this.referencedType = referencedType;
if (referencedType instanceof ObjectType) {
this.referencedObjType = (ObjectType) referencedType;
} else {
this.referencedObjType = null;
}
}
@Override
public final boolean loosenTypecheckingDueToForwardReferencedSupertype() {
return referencedType.loosenTypecheckingDueToForwardReferencedSupertype();
}
@Override
public boolean setValidator(Predicate validator) {
// The referenced type might have specialized behavior for validation, e.g. {@link NamedType}
// defers validation until after named type resolution.
return referencedType.setValidator(validator);
}
@Override
public String getReferenceName() {
return referencedObjType == null ? "" : referencedObjType.getReferenceName();
}
@Override
public final boolean isAmbiguousObject() {
return referencedObjType != null && referencedObjType.isAmbiguousObject();
}
@Override
public final boolean matchesNumberContext() {
return referencedType.matchesNumberContext();
}
@Override
public final boolean matchesStringContext() {
return referencedType.matchesStringContext();
}
@Override
public final boolean matchesSymbolContext() {
return referencedType.matchesSymbolContext();
}
@Override
public final boolean matchesObjectContext() {
return referencedType.matchesObjectContext();
}
@Override
public final boolean canBeCalled() {
return referencedType.canBeCalled();
}
@Override
public final boolean isStructuralType() {
return referencedType.isStructuralType();
}
@Override
public final boolean isNoType() {
return referencedType.isNoType();
}
@Override
public final boolean isNoObjectType() {
return referencedType.isNoObjectType();
}
@Override
public final boolean isNoResolvedType() {
return referencedType.isNoResolvedType();
}
@Override
public final boolean isUnknownType() {
return referencedType.isUnknownType();
}
@Override
public final boolean isCheckedUnknownType() {
return referencedType.isCheckedUnknownType();
}
@Override
public final boolean isNullable() {
return referencedType.isNullable();
}
@Override
public final boolean isVoidable() {
return referencedType.isVoidable();
}
@Override
public final EnumType toMaybeEnumType() {
return referencedType.toMaybeEnumType();
}
@Override
public final boolean isConstructor() {
return referencedType.isConstructor();
}
@Override
public boolean isNominalType() {
return referencedType.isNominalType();
}
@Override
public final boolean isInstanceType() {
return referencedType.isInstanceType();
}
@Override
public final boolean isInterface() {
return referencedType.isInterface();
}
@Override
public final boolean isOrdinaryFunction() {
return referencedType.isOrdinaryFunction();
}
@Override
public final boolean isAllType() {
return referencedType.isAllType();
}
@Override
public final boolean isStruct() {
return referencedType.isStruct();
}
@Override
public final boolean isDict() {
return referencedType.isDict();
}
@Override
public final boolean isNativeObjectType() {
return referencedObjType == null ? false : referencedObjType.isNativeObjectType();
}
@Override
public final RecordType toMaybeRecordType() {
return referencedType.toMaybeRecordType();
}
@Override
public final UnionType toMaybeUnionType() {
return referencedType.toMaybeUnionType();
}
@Override
public final FunctionType toMaybeFunctionType() {
return referencedType.toMaybeFunctionType();
}
@Override
public final EnumElementType toMaybeEnumElementType() {
return referencedType.toMaybeEnumElementType();
}
@Override
public final TernaryValue testForEquality(JSType that) {
return referencedType.testForEquality(that);
}
@Override
public final FunctionType getOwnerFunction() {
return referencedObjType == null ? null : referencedObjType.getOwnerFunction();
}
@Override
public Iterable getCtorImplementedInterfaces() {
return referencedObjType == null
? ImmutableList.of()
: referencedObjType.getCtorImplementedInterfaces();
}
@Override
public Iterable getCtorExtendedInterfaces() {
return this.referencedObjType == null
? Collections.emptyList()
: this.referencedObjType.getCtorExtendedInterfaces();
}
@Override
int recursionUnsafeHashCode() {
return referencedType.hashCode();
}
@Override
void appendTo(TypeStringBuilder sb) {
referencedType.appendTo(sb);
}
@Override
public final ObjectType getImplicitPrototype() {
return referencedObjType == null ? null : referencedObjType.getImplicitPrototype();
}
@Override
boolean defineProperty(String propertyName, JSType type, boolean inferred, Node propertyNode) {
return referencedObjType == null
|| referencedObjType.defineProperty(propertyName, type, inferred, propertyNode);
}
@Override
public final boolean removeProperty(String name) {
return referencedObjType == null ? false : referencedObjType.removeProperty(name);
}
@Override
protected JSType findPropertyTypeWithoutConsideringTemplateTypes(String propertyName) {
return referencedType.findPropertyType(propertyName);
}
@Override
public final JSDocInfo getJSDocInfo() {
return referencedType.getJSDocInfo();
}
@Override
public final void setJSDocInfo(JSDocInfo info) {
if (referencedObjType != null) {
referencedObjType.setJSDocInfo(info);
}
}
@Override
public final void setPropertyJSDocInfo(String propertyName, JSDocInfo info) {
if (referencedObjType != null) {
referencedObjType.setPropertyJSDocInfo(propertyName, info);
}
}
@Override
public final FunctionType getConstructor() {
return referencedObjType == null ? null : referencedObjType.getConstructor();
}
@Override
public ImmutableList getTemplateTypes() {
return referencedObjType == null ? null : referencedObjType.getTemplateTypes();
}
@Override
public int getTemplateParamCount() {
return referencedType.getTemplateParamCount();
}
public final T visitReferenceType(Visitor visitor) {
return referencedType.visit(visitor);
}
@Override
public T visit(Visitor visitor) {
return visitor.caseProxyObjectType(this);
}
@Override T visit(RelationshipVisitor visitor, JSType that) {
return referencedType.visit(visitor, that);
}
@Override
JSType resolveInternal(ErrorReporter reporter) {
setReferencedType(referencedType.resolve(reporter));
return this;
}
@Override
public final JSType getTypeOfThis() {
if (referencedObjType != null) {
return referencedObjType.getTypeOfThis();
}
return super.getTypeOfThis();
}
@Override
public final JSType collapseUnion() {
if (referencedType.isUnionType()) {
return referencedType.collapseUnion();
}
return this;
}
@Override
public final void matchConstraint(JSType constraint) {
referencedType.matchConstraint(constraint);
}
@Override
public TemplatizedType toMaybeTemplatizedType() {
return referencedType.toMaybeTemplatizedType();
}
@Override
public TemplateType toMaybeTemplateType() {
return referencedType.toMaybeTemplateType();
}
@Override
public boolean hasAnyTemplateTypesInternal() {
return referencedType.hasAnyTemplateTypes();
}
@Override
public TemplateTypeMap getTemplateTypeMap() {
return referencedType.getTemplateTypeMap();
}
}