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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.javascript.rhino.Node;
/**
* An object type that is an instance of some function constructor.
*/
class InstanceObjectType extends PrototypeObjectType {
private static final long serialVersionUID = 1L;
private final FunctionType constructor;
InstanceObjectType(JSTypeRegistry registry, FunctionType constructor) {
this(registry, constructor, false);
}
InstanceObjectType(JSTypeRegistry registry, FunctionType constructor,
boolean isNativeType) {
super(registry, null, null, isNativeType, constructor.getTemplateTypeMap());
Preconditions.checkNotNull(constructor);
this.constructor = constructor;
}
@Override
public String getReferenceName() {
return getConstructor().getReferenceName();
}
@Override
public boolean hasReferenceName() {
return getConstructor().hasReferenceName();
}
@Override
public ObjectType getImplicitPrototype() {
return getConstructor().getPrototype();
}
@Override
public FunctionType getConstructor() {
return constructor;
}
@Override
boolean defineProperty(String name, JSType type, boolean inferred,
Node propertyNode) {
ObjectType proto = getImplicitPrototype();
if (proto != null && proto.hasOwnDeclaredProperty(name)) {
return false;
}
return super.defineProperty(name, type, inferred, propertyNode);
}
@Override
StringBuilder appendTo(StringBuilder sb, boolean forAnnotations) {
return constructor.hasReferenceName()
? sb.append(constructor.getReferenceName())
: super.appendTo(sb, forAnnotations);
}
@Override
boolean isTheObjectType() {
return getConstructor().isNativeObjectType()
&& "Object".equals(getReferenceName());
}
@Override
public boolean isInstanceType() {
return true;
}
@Override
public boolean isArrayType() {
return getConstructor().isNativeObjectType()
&& "Array".equals(getReferenceName());
}
@Override
public boolean isStringObjectType() {
return getConstructor().isNativeObjectType()
&& "String".equals(getReferenceName());
}
@Override
public boolean isBooleanObjectType() {
return getConstructor().isNativeObjectType()
&& "Boolean".equals(getReferenceName());
}
@Override
public boolean isNumberObjectType() {
return getConstructor().isNativeObjectType()
&& "Number".equals(getReferenceName());
}
@Override
public boolean isDateType() {
return getConstructor().isNativeObjectType()
&& "Date".equals(getReferenceName());
}
@Override
public boolean isRegexpType() {
return getConstructor().isNativeObjectType()
&& "RegExp".equals(getReferenceName());
}
@Override
public boolean isNominalType() {
return hasReferenceName();
}
/**
* If this is equal to a NamedType object, its hashCode must be equal
* to the hashCode of the NamedType object.
*/
@Override
public int hashCode() {
if (hasReferenceName()) {
return getReferenceName().hashCode();
} else {
return super.hashCode();
}
}
@Override
public Iterable getCtorImplementedInterfaces() {
return getConstructor().getImplementedInterfaces();
}
@Override
public Iterable getCtorExtendedInterfaces() {
return getConstructor().getExtendedInterfaces();
}
// The owner will always be a resolved type, so there's no need to set
// the constructor in resolveInternal.
// (it would lead to infinite loops if we did).
// JSType resolveInternal(ErrorReporter t, StaticTypedScope scope);
}