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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 com.google.common.base.Preconditions;
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 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(Preconditions.checkNotNull(referencedType));
}
@Override
PropertyMap getPropertyMap() {
return referencedObjType == null
? PropertyMap.immutableEmptyMap() : referencedObjType.getPropertyMap();
}
JSType getReferencedTypeInternal() {
return referencedType;
}
ObjectType getReferencedObjTypeInternal() {
return referencedObjType;
}
void setReferencedType(JSType referencedType) {
this.referencedType = referencedType;
if (referencedType instanceof ObjectType) {
this.referencedObjType = (ObjectType) referencedType;
} else {
this.referencedObjType = null;
}
}
@Override
public String getReferenceName() {
return referencedObjType == null ?
"" : referencedObjType.getReferenceName();
}
@Override
public boolean hasReferenceName() {
return referencedObjType == null ?
null : referencedObjType.hasReferenceName();
}
@Override
public boolean matchesNumberContext() {
return referencedType.matchesNumberContext();
}
@Override
public boolean matchesStringContext() {
return referencedType.matchesStringContext();
}
@Override
public boolean matchesObjectContext() {
return referencedType.matchesObjectContext();
}
@Override
public boolean canBeCalled() {
return referencedType.canBeCalled();
}
@Override
public boolean isStructuralType() {
return referencedType.isStructuralType();
}
@Override
public boolean isNoType() {
return referencedType.isNoType();
}
@Override
public boolean isNoObjectType() {
return referencedType.isNoObjectType();
}
@Override
public boolean isNoResolvedType() {
return referencedType.isNoResolvedType();
}
@Override
public boolean isUnknownType() {
return referencedType.isUnknownType();
}
@Override
public boolean isCheckedUnknownType() {
return referencedType.isCheckedUnknownType();
}
@Override
public boolean isNullable() {
return referencedType.isNullable();
}
@Override
public EnumType toMaybeEnumType() {
return referencedType.toMaybeEnumType();
}
@Override
public boolean isConstructor() {
return referencedType.isConstructor();
}
@Override
public boolean isNominalType() {
return referencedType.isNominalType();
}
@Override
public boolean isInstanceType() {
return referencedType.isInstanceType();
}
@Override
public boolean isInterface() {
return referencedType.isInterface();
}
@Override
public boolean isOrdinaryFunction() {
return referencedType.isOrdinaryFunction();
}
@Override
public boolean isAllType() {
return referencedType.isAllType();
}
@Override
public boolean isStruct() {
return referencedType.isStruct();
}
@Override
public boolean isDict() {
return referencedType.isDict();
}
@Override
public boolean isNativeObjectType() {
return referencedObjType == null
? false : referencedObjType.isNativeObjectType();
}
@Override
public RecordType toMaybeRecordType() {
return referencedType.toMaybeRecordType();
}
@Override
public UnionType toMaybeUnionType() {
return referencedType.toMaybeUnionType();
}
@Override
public FunctionType toMaybeFunctionType() {
return referencedType.toMaybeFunctionType();
}
@Override
public EnumElementType toMaybeEnumElementType() {
return referencedType.toMaybeEnumElementType();
}
@Override
public TernaryValue testForEquality(JSType that) {
return referencedType.testForEquality(that);
}
@Override
public boolean isSubtype(JSType that) {
return referencedType.isSubtype(that, ImplCache.create(), SubtypingMode.NORMAL);
}
@Override
protected boolean isSubtype(JSType that,
ImplCache implicitImplCache, SubtypingMode subtypingMode) {
return referencedType.isSubtype(that, implicitImplCache, subtypingMode);
}
@Override
public FunctionType getOwnerFunction() {
return referencedObjType == null
? null : referencedObjType.getOwnerFunction();
}
@Override
public Iterable getCtorImplementedInterfaces() {
return referencedObjType == null ? Collections.emptyList() :
referencedObjType.getCtorImplementedInterfaces();
}
@Override
public Iterable getCtorExtendedInterfaces() {
return this.referencedObjType == null
? Collections.emptyList()
: this.referencedObjType.getCtorExtendedInterfaces();
}
@Override
public int hashCode() {
return referencedType.hashCode();
}
@Override
StringBuilder appendTo(StringBuilder sb, boolean forAnnotations) {
return referencedType.appendTo(sb, forAnnotations);
}
@Override
public 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 boolean removeProperty(String name) {
return referencedObjType == null ? false :
referencedObjType.removeProperty(name);
}
@Override
public JSType findPropertyType(String propertyName) {
return referencedType.findPropertyType(propertyName);
}
@Override
public JSDocInfo getJSDocInfo() {
return referencedType.getJSDocInfo();
}
@Override
public void setJSDocInfo(JSDocInfo info) {
if (referencedObjType != null) {
referencedObjType.setJSDocInfo(info);
}
}
@Override
public void setPropertyJSDocInfo(String propertyName, JSDocInfo info) {
if (referencedObjType != null) {
referencedObjType.setPropertyJSDocInfo(propertyName, info);
}
}
@Override
public FunctionType getConstructor() {
return referencedObjType == null ? null :
referencedObjType.getConstructor();
}
@Override
public ImmutableList getTemplateTypes() {
return referencedObjType == null ? null :
referencedObjType.getTemplateTypes();
}
public 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 t, StaticTypedScope scope) {
setReferencedType(referencedType.resolve(t, scope));
return this;
}
@Override
public String toDebugHashCodeString() {
return "{proxy:" + referencedType.toDebugHashCodeString() + "}";
}
@Override
public JSType getTypeOfThis() {
if (referencedObjType != null) {
return referencedObjType.getTypeOfThis();
}
return super.getTypeOfThis();
}
@Override
public JSType collapseUnion() {
if (referencedType.isUnionType()) {
return referencedType.collapseUnion();
}
return this;
}
@Override
public 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();
}
}