com.google.javascript.rhino.jstype.JSTypeClass Maven / Gradle / Ivy
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/*
*
* ***** 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;
/**
* The set of Java classes that are subtypes of {@link JSType}.
*
* Each class reports the corresponding element as its instance {@link JSType#getTypeClass}
* method.
*
*
These values are not intended to be compatible with Liskov substitution; {@link JSType}s have
* exactly one associated {@link JSTypeClass} and it must not affect the outcome of operations such
* as {@link Object#equals}. Use of this enum is tantamount to reflection (e.g. {@link
* Object#getClass} or {@code instanceof}) and should only be used where such a comparison is
* appropriate and desirable.
*
*
Use of this enum is preferred to true reflection, when possible, for simplicity. This is safe
* because this package controls all {@link JSType} subclasses; they can all be known a priori.
*
*
Abstract classes are not listed here because there would be no way to use those elements.
*/
enum JSTypeClass {
ALL,
ARROW,
BOOLEAN,
BIGINT,
ENUM,
ENUM_ELEMENT,
FUNCTION,
INSTANCE_OBJECT,
NAMED,
NO,
NO_OBJECT,
NO_RESOLVED,
NULL,
NUMBER,
PROTOTYPE_OBJECT,
PROXY_OBJECT,
RECORD,
STRING,
SYMBOL,
TEMPLATE,
TEMPLATIZED,
UNION,
UNKNOWN,
VOID;
boolean isTypeOf(JSType t) {
return this.equals(t.getTypeClass());
}
}