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Diffstat (limited to 'trunk/infrastructure/rhino1_7R1/src/org/mozilla/javascript/NativeObject.java')
| -rw-r--r-- | trunk/infrastructure/rhino1_7R1/src/org/mozilla/javascript/NativeObject.java | 316 |
1 files changed, 316 insertions, 0 deletions
diff --git a/trunk/infrastructure/rhino1_7R1/src/org/mozilla/javascript/NativeObject.java b/trunk/infrastructure/rhino1_7R1/src/org/mozilla/javascript/NativeObject.java new file mode 100644 index 0000000..19aff63 --- /dev/null +++ b/trunk/infrastructure/rhino1_7R1/src/org/mozilla/javascript/NativeObject.java @@ -0,0 +1,316 @@ +/* -*- 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 + * Bob Jervis + * Mike McCabe + * + * 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; + +/** + * This class implements the Object native object. + * See ECMA 15.2. + * @author Norris Boyd + */ +public class NativeObject extends IdScriptableObject +{ + static final long serialVersionUID = -6345305608474346996L; + + private static final Object OBJECT_TAG = new Object(); + + static void init(Scriptable scope, boolean sealed) + { + NativeObject obj = new NativeObject(); + obj.exportAsJSClass(MAX_PROTOTYPE_ID, scope, sealed); + } + + public String getClassName() + { + return "Object"; + } + + public String toString() + { + return ScriptRuntime.defaultObjectToString(this); + } + + 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); + } + + 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 + || args[0] == Undefined.instance) + { + return new NativeObject(); + } + return ScriptRuntime.toObject(cx, scope, args[0]); + } + + case Id_toLocaleString: // For now just alias toString + 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: + return thisObj; + + case Id_hasOwnProperty: { + boolean result; + if (args.length == 0) { + result = false; + } else { + String s = ScriptRuntime.toStringIdOrIndex(cx, args[0]); + if (s == null) { + int index = ScriptRuntime.lastIndexResult(cx); + result = thisObj.has(index, thisObj); + } else { + result = thisObj.has(s, thisObj); + } + } + return ScriptRuntime.wrapBoolean(result); + } + + case Id_propertyIsEnumerable: { + boolean result; + if (args.length == 0) { + result = false; + } else { + String s = ScriptRuntime.toStringIdOrIndex(cx, args[0]); + if (s == null) { + int index = ScriptRuntime.lastIndexResult(cx); + result = thisObj.has(index, thisObj); + if (result && thisObj instanceof ScriptableObject) { + ScriptableObject so = (ScriptableObject)thisObj; + int attrs = so.getAttributes(index); + result = ((attrs & ScriptableObject.DONTENUM) == 0); + } + } else { + result = thisObj.has(s, thisObj); + if (result && thisObj instanceof ScriptableObject) { + ScriptableObject so = (ScriptableObject)thisObj; + int attrs = so.getAttributes(s); + result = ((attrs & ScriptableObject.DONTENUM) == 0); + } + } + } + return ScriptRuntime.wrapBoolean(result); + } + + case Id_isPrototypeOf: { + 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.reportRuntimeError2( + "msg.extend.scriptable", + thisObj.getClass().getName(), + String.valueOf(args[0])); + } + ScriptableObject so = (ScriptableObject)thisObj; + String name = ScriptRuntime.toStringIdOrIndex(cx, args[0]); + int index = (name != null ? 0 + : ScriptRuntime.lastIndexResult(cx)); + Callable getterOrSetter = (Callable)args[1]; + boolean isSetter = (id == Id___defineSetter__); + so.setGetterOrSetter(name, 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; + String name = ScriptRuntime.toStringIdOrIndex(cx, args[0]); + int index = (name != null ? 0 + : ScriptRuntime.lastIndexResult(cx)); + boolean isSetter = (id == Id___lookupSetter__); + Object gs; + for (;;) { + gs = so.getGetterOrSetter(name, index, 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; + + default: + throw new IllegalArgumentException(String.valueOf(id)); + } + } + +// #string_id_map# + + protected int findPrototypeId(String s) + { + int id; +// #generated# Last update: 2007-05-09 08:15:55 EDT + L0: { id = 0; String X = null; int c; + L: switch (s.length()) { + case 7: X="valueOf";id=Id_valueOf; break L; + case 8: c=s.charAt(3); + if (c=='o') { X="toSource";id=Id_toSource; } + else if (c=='t') { X="toString";id=Id_toString; } + break L; + case 11: X="constructor";id=Id_constructor; break L; + case 13: X="isPrototypeOf";id=Id_isPrototypeOf; break L; + case 14: c=s.charAt(0); + if (c=='h') { X="hasOwnProperty";id=Id_hasOwnProperty; } + else if (c=='t') { X="toLocaleString";id=Id_toLocaleString; } + break L; + case 16: c=s.charAt(2); + if (c=='d') { + c=s.charAt(8); + if (c=='G') { X="__defineGetter__";id=Id___defineGetter__; } + else if (c=='S') { X="__defineSetter__";id=Id___defineSetter__; } + } + else if (c=='l') { + c=s.charAt(8); + if (c=='G') { X="__lookupGetter__";id=Id___lookupGetter__; } + else if (c=='S') { X="__lookupSetter__";id=Id___lookupSetter__; } + } + break L; + case 20: X="propertyIsEnumerable";id=Id_propertyIsEnumerable; break L; + } + if (X!=null && X!=s && !X.equals(s)) id = 0; + break L0; + } +// #/generated# + return id; + } + + private static final int + 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; + +// #/string_id_map# +} |