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Diffstat (limited to 'trunk/infrastructure/rhino1_7R1/src/org/mozilla/javascript/NativeWith.java')
| -rw-r--r-- | trunk/infrastructure/rhino1_7R1/src/org/mozilla/javascript/NativeWith.java | 207 |
1 files changed, 207 insertions, 0 deletions
diff --git a/trunk/infrastructure/rhino1_7R1/src/org/mozilla/javascript/NativeWith.java b/trunk/infrastructure/rhino1_7R1/src/org/mozilla/javascript/NativeWith.java new file mode 100644 index 0000000..83683b2 --- /dev/null +++ b/trunk/infrastructure/rhino1_7R1/src/org/mozilla/javascript/NativeWith.java @@ -0,0 +1,207 @@ +/* -*- 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) 1997-1999 + * 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.io.Serializable; + +/** + * This class implements the object lookup required for the + * <code>with</code> statement. + * It simply delegates every action to its prototype except + * for operations on its parent. + */ +public class NativeWith implements Scriptable, IdFunctionCall, Serializable { + + private static final long serialVersionUID = 1L; + + static void init(Scriptable scope, boolean sealed) + { + NativeWith obj = new NativeWith(); + + obj.setParentScope(scope); + obj.setPrototype(ScriptableObject.getObjectPrototype(scope)); + + IdFunctionObject ctor = new IdFunctionObject(obj, FTAG, Id_constructor, + "With", 0, scope); + ctor.markAsConstructor(obj); + if (sealed) { + ctor.sealObject(); + } + ctor.exportAsScopeProperty(); + } + + private NativeWith() { + } + + protected NativeWith(Scriptable parent, Scriptable prototype) { + this.parent = parent; + this.prototype = prototype; + } + + public String getClassName() { + return "With"; + } + + public boolean has(String id, Scriptable start) + { + return prototype.has(id, prototype); + } + + public boolean has(int index, Scriptable start) + { + return prototype.has(index, prototype); + } + + public Object get(String id, Scriptable start) + { + if (start == this) + start = prototype; + return prototype.get(id, start); + } + + public Object get(int index, Scriptable start) + { + if (start == this) + start = prototype; + return prototype.get(index, start); + } + + public void put(String id, Scriptable start, Object value) + { + if (start == this) + start = prototype; + prototype.put(id, start, value); + } + + public void put(int index, Scriptable start, Object value) + { + if (start == this) + start = prototype; + prototype.put(index, start, value); + } + + public void delete(String id) + { + prototype.delete(id); + } + + public void delete(int index) + { + prototype.delete(index); + } + + public Scriptable getPrototype() { + return prototype; + } + + public void setPrototype(Scriptable prototype) { + this.prototype = prototype; + } + + public Scriptable getParentScope() { + return parent; + } + + public void setParentScope(Scriptable parent) { + this.parent = parent; + } + + public Object[] getIds() { + return prototype.getIds(); + } + + public Object getDefaultValue(Class typeHint) { + return prototype.getDefaultValue(typeHint); + } + + public boolean hasInstance(Scriptable value) { + return prototype.hasInstance(value); + } + + /** + * Must return null to continue looping or the final collection result. + */ + protected Object updateDotQuery(boolean value) + { + // NativeWith itself does not support it + throw new IllegalStateException(); + } + + public Object execIdCall(IdFunctionObject f, Context cx, Scriptable scope, + Scriptable thisObj, Object[] args) + { + if (f.hasTag(FTAG)) { + if (f.methodId() == Id_constructor) { + throw Context.reportRuntimeError1("msg.cant.call.indirect", "With"); + } + } + throw f.unknown(); + } + + static boolean isWithFunction(Object functionObj) + { + if (functionObj instanceof IdFunctionObject) { + IdFunctionObject f = (IdFunctionObject)functionObj; + return f.hasTag(FTAG) && f.methodId() == Id_constructor; + } + return false; + } + + static Object newWithSpecial(Context cx, Scriptable scope, Object[] args) + { + ScriptRuntime.checkDeprecated(cx, "With"); + scope = ScriptableObject.getTopLevelScope(scope); + NativeWith thisObj = new NativeWith(); + thisObj.setPrototype(args.length == 0 + ? ScriptableObject.getClassPrototype(scope, + "Object") + : ScriptRuntime.toObject(cx, scope, args[0])); + thisObj.setParentScope(scope); + return thisObj; + } + + private static final Object FTAG = new Object(); + + private static final int + Id_constructor = 1; + + protected Scriptable prototype; + protected Scriptable parent; +} |