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author | Alexander Sulfrian <alexander@sulfrian.net> | 2010-06-08 09:01:43 +0200 |
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committer | Alexander Sulfrian <alexander@sulfrian.net> | 2010-06-08 09:01:43 +0200 |
commit | d1fa08fdc9cb11dccee76d668ff85df30458c295 (patch) | |
tree | 1d19df6405103577d872902486792e8c23bce711 /infrastructure/rhino1_7R1/src/org/mozilla/javascript/LazilyLoadedCtor.java | |
parent | d7c5ad7d6263fd1baf9bfdbaa4c50b70ef2fbdb2 (diff) | |
parent | 70d1f9d6fcaefe611e778b8dbf3bafea8934aa08 (diff) | |
download | etherpad-d1fa08fdc9cb11dccee76d668ff85df30458c295.tar.gz etherpad-d1fa08fdc9cb11dccee76d668ff85df30458c295.tar.bz2 etherpad-d1fa08fdc9cb11dccee76d668ff85df30458c295.zip |
Merge remote branch 'upstream/master'
Conflicts:
etherpad/src/etherpad/control/pro/admin/pro_admin_control.js
etherpad/src/etherpad/control/pro/pro_main_control.js
etherpad/src/etherpad/control/pro_help_control.js
etherpad/src/etherpad/globals.js
etherpad/src/etherpad/legacy_urls.js
etherpad/src/etherpad/pne/pne_utils.js
etherpad/src/etherpad/pro/pro_utils.js
etherpad/src/main.js
etherpad/src/plugins/fileUpload/templates/fileUpload.ejs
etherpad/src/plugins/testplugin/templates/page.ejs
etherpad/src/static/css/pad2_ejs.css
etherpad/src/static/css/pro-help.css
etherpad/src/static/img/jun09/pad/protop.gif
etherpad/src/static/js/store.js
etherpad/src/themes/default/templates/framed/framedheader-pro.ejs
etherpad/src/themes/default/templates/main/home.ejs
etherpad/src/themes/default/templates/pro-help/main.ejs
etherpad/src/themes/default/templates/pro-help/pro-help-template.ejs
infrastructure/com.etherpad/licensing.scala
trunk/etherpad/src/etherpad/collab/ace/contentcollector.js
trunk/etherpad/src/etherpad/collab/ace/linestylefilter.js
trunk/etherpad/src/static/css/home-opensource.css
trunk/etherpad/src/static/js/ace.js
trunk/etherpad/src/static/js/linestylefilter_client.js
trunk/etherpad/src/templates/email/eepnet_license_info.ejs
trunk/etherpad/src/templates/pad/pad_body2.ejs
trunk/etherpad/src/templates/pad/pad_content.ejs
trunk/etherpad/src/templates/pad/padfull_body.ejs
trunk/etherpad/src/templates/pro/admin/pne-license-manager.ejs
Diffstat (limited to 'infrastructure/rhino1_7R1/src/org/mozilla/javascript/LazilyLoadedCtor.java')
-rw-r--r-- | infrastructure/rhino1_7R1/src/org/mozilla/javascript/LazilyLoadedCtor.java | 136 |
1 files changed, 136 insertions, 0 deletions
diff --git a/infrastructure/rhino1_7R1/src/org/mozilla/javascript/LazilyLoadedCtor.java b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/LazilyLoadedCtor.java new file mode 100644 index 0000000..4153372 --- /dev/null +++ b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/LazilyLoadedCtor.java @@ -0,0 +1,136 @@ +/* -*- Mode: java; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*- + * + * ***** 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) 1997-2000 + * the Initial Developer. All Rights Reserved. + * + * Contributor(s): + * Norris Boyd + * Igor Bukanov + * + * 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 org.mozilla.javascript; + +import java.lang.reflect.*; + +/** + * Avoid loading classes unless they are used. + * + * <p> This improves startup time and average memory usage. + */ +public final class LazilyLoadedCtor implements java.io.Serializable { + private static final long serialVersionUID = 1L; + + private static final int STATE_BEFORE_INIT = 0; + private static final int STATE_INITIALIZING = 1; + private static final int STATE_WITH_VALUE = 2; + + private final ScriptableObject scope; + private final String propertyName; + private final String className; + private final boolean sealed; + private Object initializedValue; + private int state; + + public LazilyLoadedCtor(ScriptableObject scope, String propertyName, + String className, boolean sealed) + { + + this.scope = scope; + this.propertyName = propertyName; + this.className = className; + this.sealed = sealed; + this.state = STATE_BEFORE_INIT; + + scope.addLazilyInitializedValue(propertyName, 0, this, + ScriptableObject.DONTENUM); + } + + void init() + { + synchronized (this) { + if (state == STATE_INITIALIZING) + throw new IllegalStateException( + "Recursive initialization for "+propertyName); + if (state == STATE_BEFORE_INIT) { + state = STATE_INITIALIZING; + // Set value now to have something to set in finally block if + // buildValue throws. + Object value = Scriptable.NOT_FOUND; + try { + value = buildValue(); + } finally { + initializedValue = value; + state = STATE_WITH_VALUE; + } + } + } + } + + Object getValue() + { + if (state != STATE_WITH_VALUE) + throw new IllegalStateException(propertyName); + return initializedValue; + } + + private Object buildValue() + { + Class cl = Kit.classOrNull(className); + if (cl != null) { + try { + Object value = ScriptableObject.buildClassCtor(scope, cl, + sealed, false); + if (value != null) { + return value; + } + else { + // cl has own static initializer which is expected + // to set the property on its own. + value = scope.get(propertyName, scope); + if (value != Scriptable.NOT_FOUND) + return value; + } + } catch (InvocationTargetException ex) { + Throwable target = ex.getTargetException(); + if (target instanceof RuntimeException) { + throw (RuntimeException)target; + } + } catch (RhinoException ex) { + } catch (InstantiationException ex) { + } catch (IllegalAccessException ex) { + } catch (SecurityException ex) { + } + } + return Scriptable.NOT_FOUND; + } + +} |