Rhino JavaScript Java Library Source Code
Rhino JavaScript Java Library is an open-source implementation of JavaScript
written entirely in Java.
Rhino JavaScript Java Library Source Code files are provided in binary package (rhino-1.7.14.zip).
You can also browse the source code below:
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⏎ org/mozilla/javascript/NativeObject.java
/* -*- Mode: java; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
package org.mozilla.javascript;
import java.util.AbstractCollection;
import java.util.AbstractSet;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collection;
import java.util.Iterator;
import java.util.Map;
import java.util.NoSuchElementException;
import java.util.Set;
import org.mozilla.javascript.ScriptRuntime.StringIdOrIndex;
/**
* This class implements the Object native object. See ECMA 15.2.
*
* @author Norris Boyd
*/
public class NativeObject extends IdScriptableObject implements Map {
private static final long serialVersionUID = -6345305608474346996L;
private static final Object OBJECT_TAG = "Object";
static void init(Scriptable scope, boolean sealed) {
NativeObject obj = new NativeObject();
obj.exportAsJSClass(MAX_PROTOTYPE_ID, scope, sealed);
}
@Override
public String getClassName() {
return "Object";
}
@Override
public String toString() {
return ScriptRuntime.defaultObjectToString(this);
}
@Override
protected void fillConstructorProperties(IdFunctionObject ctor) {
addIdFunctionProperty(ctor, OBJECT_TAG, ConstructorId_getPrototypeOf, "getPrototypeOf", 1);
if (Context.getCurrentContext().version >= Context.VERSION_ES6) {
addIdFunctionProperty(
ctor, OBJECT_TAG, ConstructorId_setPrototypeOf, "setPrototypeOf", 2);
addIdFunctionProperty(ctor, OBJECT_TAG, ConstructorId_entries, "entries", 1);
addIdFunctionProperty(ctor, OBJECT_TAG, ConstructorId_fromEntries, "fromEntries", 1);
addIdFunctionProperty(ctor, OBJECT_TAG, ConstructorId_values, "values", 1);
}
addIdFunctionProperty(ctor, OBJECT_TAG, ConstructorId_keys, "keys", 1);
addIdFunctionProperty(
ctor, OBJECT_TAG, ConstructorId_getOwnPropertyNames, "getOwnPropertyNames", 1);
addIdFunctionProperty(
ctor, OBJECT_TAG, ConstructorId_getOwnPropertySymbols, "getOwnPropertySymbols", 1);
addIdFunctionProperty(
ctor,
OBJECT_TAG,
ConstructorId_getOwnPropertyDescriptor,
"getOwnPropertyDescriptor",
2);
addIdFunctionProperty(ctor, OBJECT_TAG, ConstructorId_defineProperty, "defineProperty", 3);
addIdFunctionProperty(ctor, OBJECT_TAG, ConstructorId_isExtensible, "isExtensible", 1);
addIdFunctionProperty(
ctor, OBJECT_TAG, ConstructorId_preventExtensions, "preventExtensions", 1);
addIdFunctionProperty(
ctor, OBJECT_TAG, ConstructorId_defineProperties, "defineProperties", 2);
addIdFunctionProperty(ctor, OBJECT_TAG, ConstructorId_create, "create", 2);
addIdFunctionProperty(ctor, OBJECT_TAG, ConstructorId_isSealed, "isSealed", 1);
addIdFunctionProperty(ctor, OBJECT_TAG, ConstructorId_isFrozen, "isFrozen", 1);
addIdFunctionProperty(ctor, OBJECT_TAG, ConstructorId_seal, "seal", 1);
addIdFunctionProperty(ctor, OBJECT_TAG, ConstructorId_freeze, "freeze", 1);
addIdFunctionProperty(ctor, OBJECT_TAG, ConstructorId_assign, "assign", 2);
addIdFunctionProperty(ctor, OBJECT_TAG, ConstructorId_is, "is", 2);
super.fillConstructorProperties(ctor);
}
@Override
protected void initPrototypeId(int id) {
String s;
int arity;
switch (id) {
case Id_constructor:
arity = 1;
s = "constructor";
break;
case Id_toString:
arity = 0;
s = "toString";
break;
case Id_toLocaleString:
arity = 0;
s = "toLocaleString";
break;
case Id_valueOf:
arity = 0;
s = "valueOf";
break;
case Id_hasOwnProperty:
arity = 1;
s = "hasOwnProperty";
break;
case Id_propertyIsEnumerable:
arity = 1;
s = "propertyIsEnumerable";
break;
case Id_isPrototypeOf:
arity = 1;
s = "isPrototypeOf";
break;
case Id_toSource:
arity = 0;
s = "toSource";
break;
case Id___defineGetter__:
arity = 2;
s = "__defineGetter__";
break;
case Id___defineSetter__:
arity = 2;
s = "__defineSetter__";
break;
case Id___lookupGetter__:
arity = 1;
s = "__lookupGetter__";
break;
case Id___lookupSetter__:
arity = 1;
s = "__lookupSetter__";
break;
default:
throw new IllegalArgumentException(String.valueOf(id));
}
initPrototypeMethod(OBJECT_TAG, id, s, arity);
}
@Override
public Object execIdCall(
IdFunctionObject f, Context cx, Scriptable scope, Scriptable thisObj, Object[] args) {
if (!f.hasTag(OBJECT_TAG)) {
return super.execIdCall(f, cx, scope, thisObj, args);
}
int id = f.methodId();
switch (id) {
case Id_constructor:
{
if (thisObj != null) {
// BaseFunction.construct will set up parent, proto
return f.construct(cx, scope, args);
}
if (args.length == 0 || args[0] == null || Undefined.isUndefined(args[0])) {
return new NativeObject();
}
return ScriptRuntime.toObject(cx, scope, args[0]);
}
case Id_toLocaleString:
{
if (thisObj == null) {
throw ScriptRuntime.notFunctionError(null);
}
Object toString = ScriptableObject.getProperty(thisObj, "toString");
if (!(toString instanceof Callable)) {
throw ScriptRuntime.notFunctionError(toString);
}
Callable fun = (Callable) toString;
return fun.call(cx, scope, thisObj, ScriptRuntime.emptyArgs);
}
case Id_toString:
{
if (cx.hasFeature(Context.FEATURE_TO_STRING_AS_SOURCE)) {
String s =
ScriptRuntime.defaultObjectToSource(
cx, scope,
thisObj, args);
int L = s.length();
if (L != 0 && s.charAt(0) == '(' && s.charAt(L - 1) == ')') {
// Strip () that surrounds toSource
s = s.substring(1, L - 1);
}
return s;
}
return ScriptRuntime.defaultObjectToString(thisObj);
}
case Id_valueOf:
if (cx.getLanguageVersion() >= Context.VERSION_1_8
&& (thisObj == null || Undefined.isUndefined(thisObj))) {
throw ScriptRuntime.typeErrorById(
"msg." + (thisObj == null ? "null" : "undef") + ".to.object");
}
return thisObj;
case Id_hasOwnProperty:
{
if (cx.getLanguageVersion() >= Context.VERSION_1_8
&& (thisObj == null || Undefined.isUndefined(thisObj))) {
throw ScriptRuntime.typeErrorById(
"msg." + (thisObj == null ? "null" : "undef") + ".to.object");
}
boolean result;
Object arg = args.length < 1 ? Undefined.instance : args[0];
if (arg instanceof Symbol) {
result = ensureSymbolScriptable(thisObj).has((Symbol) arg, thisObj);
} else {
StringIdOrIndex s = ScriptRuntime.toStringIdOrIndex(cx, arg);
if (s.stringId == null) {
result = thisObj.has(s.index, thisObj);
} else {
result = thisObj.has(s.stringId, thisObj);
}
}
return ScriptRuntime.wrapBoolean(result);
}
case Id_propertyIsEnumerable:
{
if (cx.getLanguageVersion() >= Context.VERSION_1_8
&& (thisObj == null || Undefined.isUndefined(thisObj))) {
throw ScriptRuntime.typeErrorById(
"msg." + (thisObj == null ? "null" : "undef") + ".to.object");
}
boolean result;
Object arg = args.length < 1 ? Undefined.instance : args[0];
if (arg instanceof Symbol) {
result = ((SymbolScriptable) thisObj).has((Symbol) arg, thisObj);
result = result && isEnumerable((Symbol) arg, thisObj);
} else {
StringIdOrIndex s = ScriptRuntime.toStringIdOrIndex(cx, arg);
// When checking if a property is enumerable, a missing property should
// return "false" instead of
// throwing an exception. See: https://github.com/mozilla/rhino/issues/415
try {
if (s.stringId == null) {
result = thisObj.has(s.index, thisObj);
result = result && isEnumerable(s.index, thisObj);
} else {
result = thisObj.has(s.stringId, thisObj);
result = result && isEnumerable(s.stringId, thisObj);
}
} catch (EvaluatorException ee) {
if (ee.getMessage()
.startsWith(
ScriptRuntime.getMessageById(
"msg.prop.not.found",
s.stringId == null
? Integer.toString(s.index)
: s.stringId))) {
result = false;
} else {
throw ee;
}
}
}
return ScriptRuntime.wrapBoolean(result);
}
case Id_isPrototypeOf:
{
if (cx.getLanguageVersion() >= Context.VERSION_1_8
&& (thisObj == null || Undefined.isUndefined(thisObj))) {
throw ScriptRuntime.typeErrorById(
"msg." + (thisObj == null ? "null" : "undef") + ".to.object");
}
boolean result = false;
if (args.length != 0 && args[0] instanceof Scriptable) {
Scriptable v = (Scriptable) args[0];
do {
v = v.getPrototype();
if (v == thisObj) {
result = true;
break;
}
} while (v != null);
}
return ScriptRuntime.wrapBoolean(result);
}
case Id_toSource:
return ScriptRuntime.defaultObjectToSource(cx, scope, thisObj, args);
case Id___defineGetter__:
case Id___defineSetter__:
{
if (args.length < 2 || !(args[1] instanceof Callable)) {
Object badArg = (args.length >= 2 ? args[1] : Undefined.instance);
throw ScriptRuntime.notFunctionError(badArg);
}
if (!(thisObj instanceof ScriptableObject)) {
throw Context.reportRuntimeErrorById(
"msg.extend.scriptable",
thisObj == null ? "null" : thisObj.getClass().getName(),
String.valueOf(args[0]));
}
ScriptableObject so = (ScriptableObject) thisObj;
StringIdOrIndex s = ScriptRuntime.toStringIdOrIndex(cx, args[0]);
int index = s.stringId != null ? 0 : s.index;
Callable getterOrSetter = (Callable) args[1];
boolean isSetter = (id == Id___defineSetter__);
so.setGetterOrSetter(s.stringId, index, getterOrSetter, isSetter);
if (so instanceof NativeArray) ((NativeArray) so).setDenseOnly(false);
}
return Undefined.instance;
case Id___lookupGetter__:
case Id___lookupSetter__:
{
if (args.length < 1 || !(thisObj instanceof ScriptableObject))
return Undefined.instance;
ScriptableObject so = (ScriptableObject) thisObj;
StringIdOrIndex s = ScriptRuntime.toStringIdOrIndex(cx, args[0]);
int index = s.stringId != null ? 0 : s.index;
boolean isSetter = (id == Id___lookupSetter__);
Object gs;
for (; ; ) {
gs = so.getGetterOrSetter(s.stringId, index, this, isSetter);
if (gs != null) {
break;
}
// If there is no getter or setter for the object itself,
// how about the prototype?
Scriptable v = so.getPrototype();
if (v == null) {
break;
}
if (v instanceof ScriptableObject) {
so = (ScriptableObject) v;
} else {
break;
}
}
if (gs != null) {
return gs;
}
}
return Undefined.instance;
case ConstructorId_getPrototypeOf:
{
Object arg = args.length < 1 ? Undefined.instance : args[0];
Scriptable obj = getCompatibleObject(cx, scope, arg);
return obj.getPrototype();
}
case ConstructorId_setPrototypeOf:
{
if (args.length < 2) {
throw ScriptRuntime.typeErrorById(
"msg.method.missing.parameter",
"Object.setPrototypeOf",
"2",
Integer.toString(args.length));
}
Scriptable proto = (args[1] == null) ? null : ensureScriptable(args[1]);
if (proto instanceof Symbol) {
throw ScriptRuntime.typeErrorById(
"msg.arg.not.object", ScriptRuntime.typeof(proto));
}
final Object arg0 = args[0];
if (cx.getLanguageVersion() >= Context.VERSION_ES6) {
ScriptRuntimeES6.requireObjectCoercible(cx, arg0, f);
}
if (!(arg0 instanceof ScriptableObject)) {
return arg0;
}
ScriptableObject obj = (ScriptableObject) arg0;
if (!obj.isExtensible()) {
throw ScriptRuntime.typeErrorById("msg.not.extensible");
}
// cycle detection
Scriptable prototypeProto = proto;
while (prototypeProto != null) {
if (prototypeProto == obj) {
throw ScriptRuntime.typeErrorById(
"msg.object.cyclic.prototype", obj.getClass().getSimpleName());
}
prototypeProto = prototypeProto.getPrototype();
}
obj.setPrototype(proto);
return obj;
}
case ConstructorId_keys:
{
Object arg = args.length < 1 ? Undefined.instance : args[0];
Scriptable obj = getCompatibleObject(cx, scope, arg);
Object[] ids = obj.getIds();
for (int i = 0; i < ids.length; i++) {
ids[i] = ScriptRuntime.toString(ids[i]);
}
return cx.newArray(scope, ids);
}
case ConstructorId_entries:
{
Object arg = args.length < 1 ? Undefined.instance : args[0];
Scriptable obj = getCompatibleObject(cx, scope, arg);
Object[] ids = obj.getIds();
int j = 0;
for (int i = 0; i < ids.length; i++) {
if (ids[i] instanceof Integer) {
int intId = (Integer) ids[i];
if (obj.has(intId, obj) && isEnumerable(intId, obj)) {
String stringId = ScriptRuntime.toString(ids[i]);
Object[] entry = new Object[] {stringId, obj.get(intId, obj)};
ids[j++] = cx.newArray(scope, entry);
}
} else {
String stringId = ScriptRuntime.toString(ids[i]);
if (obj.has(stringId, obj) && isEnumerable(stringId, obj)) {
Object[] entry = new Object[] {stringId, obj.get(stringId, obj)};
ids[j++] = cx.newArray(scope, entry);
}
}
}
if (j != ids.length) {
ids = Arrays.copyOf(ids, j);
}
return cx.newArray(scope, ids);
}
case ConstructorId_fromEntries:
{
Object arg = args.length < 1 ? Undefined.instance : args[0];
arg = getCompatibleObject(cx, scope, arg);
Scriptable obj = cx.newObject(scope);
ScriptRuntime.loadFromIterable(
cx,
scope,
arg,
(key, value) -> {
if (key instanceof Integer) {
obj.put((Integer) key, obj, value);
} else if (key instanceof Symbol
&& obj instanceof SymbolScriptable) {
((SymbolScriptable) obj).put((Symbol) key, obj, value);
} else {
obj.put(ScriptRuntime.toString(key), obj, value);
}
});
return obj;
}
case ConstructorId_values:
{
Object arg = args.length < 1 ? Undefined.instance : args[0];
Scriptable obj = getCompatibleObject(cx, scope, arg);
Object[] ids = obj.getIds();
int j = 0;
for (int i = 0; i < ids.length; i++) {
if (ids[i] instanceof Integer) {
int intId = (Integer) ids[i];
if (obj.has(intId, obj) && isEnumerable(intId, obj)) {
ids[j++] = obj.get(intId, obj);
}
} else {
String stringId = ScriptRuntime.toString(ids[i]);
// getter may remove keys
if (obj.has(stringId, obj) && isEnumerable(stringId, obj)) {
ids[j++] = obj.get(stringId, obj);
}
}
}
if (j != ids.length) {
ids = Arrays.copyOf(ids, j);
}
return cx.newArray(scope, ids);
}
case ConstructorId_getOwnPropertyNames:
{
Object arg = args.length < 1 ? Undefined.instance : args[0];
Scriptable s = getCompatibleObject(cx, scope, arg);
ScriptableObject obj = ensureScriptableObject(s);
Object[] ids = obj.getIds(true, false);
for (int i = 0; i < ids.length; i++) {
ids[i] = ScriptRuntime.toString(ids[i]);
}
return cx.newArray(scope, ids);
}
case ConstructorId_getOwnPropertySymbols:
{
Object arg = args.length < 1 ? Undefined.instance : args[0];
Scriptable s = getCompatibleObject(cx, scope, arg);
ScriptableObject obj = ensureScriptableObject(s);
Object[] ids = obj.getIds(true, true);
ArrayList<Object> syms = new ArrayList<Object>();
for (int i = 0; i < ids.length; i++) {
if (ids[i] instanceof Symbol) {
syms.add(ids[i]);
}
}
return cx.newArray(scope, syms.toArray());
}
case ConstructorId_getOwnPropertyDescriptor:
{
Object arg = args.length < 1 ? Undefined.instance : args[0];
// TODO(norris): There's a deeper issue here if
// arg instanceof Scriptable. Should we create a new
// interface to admit the new ECMAScript 5 operations?
Scriptable s = getCompatibleObject(cx, scope, arg);
ScriptableObject obj = ensureScriptableObject(s);
Object nameArg = args.length < 2 ? Undefined.instance : args[1];
Scriptable desc = obj.getOwnPropertyDescriptor(cx, nameArg);
return desc == null ? Undefined.instance : desc;
}
case ConstructorId_defineProperty:
{
Object arg = args.length < 1 ? Undefined.instance : args[0];
ScriptableObject obj = ensureScriptableObject(arg);
Object name = args.length < 2 ? Undefined.instance : args[1];
Object descArg = args.length < 3 ? Undefined.instance : args[2];
ScriptableObject desc = ensureScriptableObject(descArg);
obj.defineOwnProperty(cx, name, desc);
return obj;
}
case ConstructorId_isExtensible:
{
Object arg = args.length < 1 ? Undefined.instance : args[0];
if (cx.getLanguageVersion() >= Context.VERSION_ES6
&& !(arg instanceof ScriptableObject)) {
return Boolean.FALSE;
}
ScriptableObject obj = ensureScriptableObject(arg);
return Boolean.valueOf(obj.isExtensible());
}
case ConstructorId_preventExtensions:
{
Object arg = args.length < 1 ? Undefined.instance : args[0];
if (cx.getLanguageVersion() >= Context.VERSION_ES6
&& !(arg instanceof ScriptableObject)) {
return arg;
}
ScriptableObject obj = ensureScriptableObject(arg);
obj.preventExtensions();
return obj;
}
case ConstructorId_defineProperties:
{
Object arg = args.length < 1 ? Undefined.instance : args[0];
ScriptableObject obj = ensureScriptableObject(arg);
Object propsObj = args.length < 2 ? Undefined.instance : args[1];
Scriptable props = Context.toObject(propsObj, scope);
obj.defineOwnProperties(cx, ensureScriptableObject(props));
return obj;
}
case ConstructorId_create:
{
Object arg = args.length < 1 ? Undefined.instance : args[0];
Scriptable obj = (arg == null) ? null : ensureScriptable(arg);
ScriptableObject newObject = new NativeObject();
newObject.setParentScope(scope);
newObject.setPrototype(obj);
if (args.length > 1 && !Undefined.isUndefined(args[1])) {
Scriptable props = Context.toObject(args[1], scope);
newObject.defineOwnProperties(cx, ensureScriptableObject(props));
}
return newObject;
}
case ConstructorId_isSealed:
{
Object arg = args.length < 1 ? Undefined.instance : args[0];
if (cx.getLanguageVersion() >= Context.VERSION_ES6
&& !(arg instanceof ScriptableObject)) {
return Boolean.TRUE;
}
return AbstractEcmaObjectOperations.testIntegrityLevel(
cx, arg, AbstractEcmaObjectOperations.INTEGRITY_LEVEL.SEALED);
}
case ConstructorId_isFrozen:
{
Object arg = args.length < 1 ? Undefined.instance : args[0];
if (cx.getLanguageVersion() >= Context.VERSION_ES6
&& !(arg instanceof ScriptableObject)) {
return Boolean.TRUE;
}
return AbstractEcmaObjectOperations.testIntegrityLevel(
cx, arg, AbstractEcmaObjectOperations.INTEGRITY_LEVEL.FROZEN);
}
case ConstructorId_seal:
{
Object arg = args.length < 1 ? Undefined.instance : args[0];
if (cx.getLanguageVersion() >= Context.VERSION_ES6
&& !(arg instanceof ScriptableObject)) {
return arg;
}
AbstractEcmaObjectOperations.setIntegrityLevel(
cx, arg, AbstractEcmaObjectOperations.INTEGRITY_LEVEL.SEALED);
return arg;
}
case ConstructorId_freeze:
{
Object arg = args.length < 1 ? Undefined.instance : args[0];
if (cx.getLanguageVersion() >= Context.VERSION_ES6
&& !(arg instanceof ScriptableObject)) {
return arg;
}
AbstractEcmaObjectOperations.setIntegrityLevel(
cx, arg, AbstractEcmaObjectOperations.INTEGRITY_LEVEL.FROZEN);
return arg;
}
case ConstructorId_assign:
{
Scriptable targetObj;
if (args.length > 0) {
targetObj = ScriptRuntime.toObject(cx, scope, args[0]);
} else {
targetObj = ScriptRuntime.toObject(cx, scope, Undefined.instance);
}
for (int i = 1; i < args.length; i++) {
if ((args[i] == null) || Undefined.isUndefined(args[i])) {
continue;
}
Scriptable sourceObj = ScriptRuntime.toObject(cx, scope, args[i]);
Object[] ids = sourceObj.getIds();
for (Object key : ids) {
if (targetObj instanceof ScriptableObject) {
ScriptableObject desc =
((ScriptableObject) targetObj)
.getOwnPropertyDescriptor(cx, key);
if (desc != null
&& isDataDescriptor(desc)
&& isFalse(desc.get("writable"))) {
throw ScriptRuntime.typeErrorById(
"msg.change.value.with.writable.false", key);
}
}
if (key instanceof String) {
Object val = sourceObj.get((String) key, sourceObj);
if ((val != Scriptable.NOT_FOUND) && !Undefined.isUndefined(val)) {
targetObj.put((String) key, targetObj, val);
}
} else if (key instanceof Number) {
int ii = ScriptRuntime.toInt32(key);
Object val = sourceObj.get(ii, sourceObj);
if ((val != Scriptable.NOT_FOUND) && !Undefined.isUndefined(val)) {
targetObj.put(ii, targetObj, val);
}
}
}
}
return targetObj;
}
case ConstructorId_is:
{
Object a1 = args.length < 1 ? Undefined.instance : args[0];
Object a2 = args.length < 2 ? Undefined.instance : args[1];
return ScriptRuntime.wrapBoolean(ScriptRuntime.same(a1, a2));
}
default:
throw new IllegalArgumentException(String.valueOf(id));
}
}
private boolean isEnumerable(int index, Object obj) {
if (obj instanceof ScriptableObject) {
ScriptableObject so = (ScriptableObject) obj;
int attrs = so.getAttributes(index);
return (attrs & ScriptableObject.DONTENUM) == 0;
} else {
return true;
}
}
private boolean isEnumerable(String key, Object obj) {
if (obj instanceof ScriptableObject) {
ScriptableObject so = (ScriptableObject) obj;
int attrs = so.getAttributes(key);
return (attrs & ScriptableObject.DONTENUM) == 0;
} else {
return true;
}
}
private boolean isEnumerable(Symbol sym, Object obj) {
if (obj instanceof ScriptableObject) {
ScriptableObject so = (ScriptableObject) obj;
int attrs = so.getAttributes(sym);
return (attrs & ScriptableObject.DONTENUM) == 0;
} else {
return true;
}
}
private static Scriptable getCompatibleObject(Context cx, Scriptable scope, Object arg) {
if (cx.getLanguageVersion() >= Context.VERSION_ES6) {
Scriptable s = ScriptRuntime.toObject(cx, scope, arg);
return ensureScriptable(s);
}
return ensureScriptable(arg);
}
// methods implementing java.util.Map
@Override
public boolean containsKey(Object key) {
if (key instanceof String) {
return has((String) key, this);
} else if (key instanceof Number) {
return has(((Number) key).intValue(), this);
}
return false;
}
@Override
public boolean containsValue(Object value) {
for (Object obj : values()) {
if (value == obj || value != null && value.equals(obj)) {
return true;
}
}
return false;
}
@Override
public Object remove(Object key) {
Object value = get(key);
if (key instanceof String) {
delete((String) key);
} else if (key instanceof Number) {
delete(((Number) key).intValue());
}
return value;
}
@Override
public Set<Object> keySet() {
return new KeySet();
}
@Override
public Collection<Object> values() {
return new ValueCollection();
}
@Override
public Set<Map.Entry<Object, Object>> entrySet() {
return new EntrySet();
}
@Override
public Object put(Object key, Object value) {
throw new UnsupportedOperationException();
}
@Override
public void putAll(Map m) {
throw new UnsupportedOperationException();
}
@Override
public void clear() {
throw new UnsupportedOperationException();
}
class EntrySet extends AbstractSet<Entry<Object, Object>> {
@Override
public Iterator<Entry<Object, Object>> iterator() {
return new Iterator<Map.Entry<Object, Object>>() {
Object[] ids = getIds();
Object key = null;
int index = 0;
@Override
public boolean hasNext() {
return index < ids.length;
}
@Override
public Map.Entry<Object, Object> next() {
final Object ekey = key = ids[index++];
final Object value = get(key);
return new Map.Entry<Object, Object>() {
@Override
public Object getKey() {
return ekey;
}
@Override
public Object getValue() {
return value;
}
@Override
public Object setValue(Object value) {
throw new UnsupportedOperationException();
}
@Override
public boolean equals(Object other) {
if (!(other instanceof Map.Entry)) {
return false;
}
Map.Entry<?, ?> e = (Map.Entry<?, ?>) other;
return (ekey == null ? e.getKey() == null : ekey.equals(e.getKey()))
&& (value == null
? e.getValue() == null
: value.equals(e.getValue()));
}
@Override
public int hashCode() {
return (ekey == null ? 0 : ekey.hashCode())
^ (value == null ? 0 : value.hashCode());
}
@Override
public String toString() {
return ekey + "=" + value;
}
};
}
@Override
public void remove() {
if (key == null) {
throw new IllegalStateException();
}
NativeObject.this.remove(key);
key = null;
}
};
}
@Override
public int size() {
return NativeObject.this.size();
}
}
class KeySet extends AbstractSet<Object> {
@Override
public boolean contains(Object key) {
return containsKey(key);
}
@Override
public Iterator<Object> iterator() {
return new Iterator<Object>() {
Object[] ids = getIds();
Object key;
int index = 0;
@Override
public boolean hasNext() {
return index < ids.length;
}
@Override
public Object next() {
try {
return (key = ids[index++]);
} catch (ArrayIndexOutOfBoundsException e) {
key = null;
throw new NoSuchElementException();
}
}
@Override
public void remove() {
if (key == null) {
throw new IllegalStateException();
}
NativeObject.this.remove(key);
key = null;
}
};
}
@Override
public int size() {
return NativeObject.this.size();
}
}
class ValueCollection extends AbstractCollection<Object> {
@Override
public Iterator<Object> iterator() {
return new Iterator<Object>() {
Object[] ids = getIds();
Object key;
int index = 0;
@Override
public boolean hasNext() {
return index < ids.length;
}
@Override
public Object next() {
return get((key = ids[index++]));
}
@Override
public void remove() {
if (key == null) {
throw new IllegalStateException();
}
NativeObject.this.remove(key);
key = null;
}
};
}
@Override
public int size() {
return NativeObject.this.size();
}
}
@Override
protected int findPrototypeId(String s) {
int id;
switch (s) {
case "constructor":
id = Id_constructor;
break;
case "toString":
id = Id_toString;
break;
case "toLocaleString":
id = Id_toLocaleString;
break;
case "valueOf":
id = Id_valueOf;
break;
case "hasOwnProperty":
id = Id_hasOwnProperty;
break;
case "propertyIsEnumerable":
id = Id_propertyIsEnumerable;
break;
case "isPrototypeOf":
id = Id_isPrototypeOf;
break;
case "toSource":
id = Id_toSource;
break;
case "__defineGetter__":
id = Id___defineGetter__;
break;
case "__defineSetter__":
id = Id___defineSetter__;
break;
case "__lookupGetter__":
id = Id___lookupGetter__;
break;
case "__lookupSetter__":
id = Id___lookupSetter__;
break;
default:
id = 0;
break;
}
return id;
}
private static final int ConstructorId_getPrototypeOf = -1,
ConstructorId_keys = -2,
ConstructorId_getOwnPropertyNames = -3,
ConstructorId_getOwnPropertyDescriptor = -4,
ConstructorId_defineProperty = -5,
ConstructorId_isExtensible = -6,
ConstructorId_preventExtensions = -7,
ConstructorId_defineProperties = -8,
ConstructorId_create = -9,
ConstructorId_isSealed = -10,
ConstructorId_isFrozen = -11,
ConstructorId_seal = -12,
ConstructorId_freeze = -13,
ConstructorId_getOwnPropertySymbols = -14,
ConstructorId_assign = -15,
ConstructorId_is = -16,
// ES6
ConstructorId_setPrototypeOf = -17,
ConstructorId_entries = -18,
ConstructorId_fromEntries = -19,
ConstructorId_values = -20,
Id_constructor = 1,
Id_toString = 2,
Id_toLocaleString = 3,
Id_valueOf = 4,
Id_hasOwnProperty = 5,
Id_propertyIsEnumerable = 6,
Id_isPrototypeOf = 7,
Id_toSource = 8,
Id___defineGetter__ = 9,
Id___defineSetter__ = 10,
Id___lookupGetter__ = 11,
Id___lookupSetter__ = 12,
MAX_PROTOTYPE_ID = 12;
}
⏎ org/mozilla/javascript/NativeObject.java
Or download all of them as a single archive file:
File name: rhino-1.7.14-sources.jar File size: 1029165 bytes Release date: 2022-01-06 Download
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