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173 lines (146 loc) · 5.34 KB
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/* -*- Mode: java; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
*
* The contents of this file are subject to the Netscape 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/NPL/
*
* Software distributed under the License is distributed on an "AS
* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express oqr
* 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 Netscape are
* Copyright (C) 1997-1999 Netscape Communications Corporation. All
* Rights Reserved.
*
* Contributor(s):
* Norris Boyd
*
* Alternatively, the contents of this file may be used under the
* terms of the GNU Public License (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 NPL, indicate your decision by
* deleting the provisions above and replace 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 NPL or the GPL.
*/
package org.mozilla.javascript;
import java.lang.reflect.Method;
/**
* 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 {
public static void init(Scriptable scope) {
NativeWith w = new NativeWith();
w.setPrototype(ScriptableObject.getObjectPrototype(scope));
Method[] m = FunctionObject.findMethods(NativeWith.class,
"jsConstructor");
FunctionObject f = new FunctionObject("With", m[0], scope);
f.addAsConstructor(scope, w);
}
public NativeWith() {
}
public NativeWith(Scriptable parent, Scriptable prototype) {
this.parent = parent;
this.prototype = prototype;
}
public String getClassName() {
return "With";
}
public boolean has(String id, Scriptable start) {
if (start == this)
start = prototype;
return prototype.has(id, start);
}
public boolean has(int index, Scriptable start) {
if (start == this)
start = prototype;
return prototype.has(index, start);
}
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);
}
public static Object jsConstructor(Context cx, Object[] args,
Function ctorObj, boolean inNewExpr)
{
Object[] msgArgs = { "With" };
throw Context.reportRuntimeError(
Context.getMessage("msg.cant.call.indirect", msgArgs));
}
public static Object newWithSpecial(Context cx, Object[] args,
Function ctorObj, boolean inNewExpr)
{
if (!inNewExpr) {
Object[] errArgs = { "With" };
throw Context.reportRuntimeError(Context.getMessage
("msg.only.from.new", errArgs));
}
ScriptRuntime.checkDeprecated(cx, "With");
Scriptable scope = ScriptableObject.getTopLevelScope(ctorObj);
NativeWith thisObj = new NativeWith();
thisObj.setPrototype(args.length == 0
? ScriptableObject.getClassPrototype(scope,
"Object")
: ScriptRuntime.toObject(scope, args[0]));
thisObj.setParentScope(scope);
return thisObj;
}
private Scriptable prototype;
private Scriptable parent;
private Scriptable constructor;
}