149 lines
5.4 KiB
Java
149 lines
5.4 KiB
Java
/* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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*
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* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is mozilla.org code.
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*
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* The Initial Developer of the Original Code is
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* Netscape Communications Corporation.
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* Portions created by the Initial Developer are Copyright (C) 1998
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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package netscape.jsdebug;
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/**
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* The Property class represents a single property of a JavaScript Value.
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*
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* @author John Bandhauer
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* @version 1.1
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* @since 1.1
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*/
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public final class Property {
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private Property() {} // can only be made natively
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// these must stay the same as the flags in jsdbgapi.h
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public static int ENUMERATE = 0x01; /* visible to for/in loop */
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public static int READONLY = 0x02; /* assignment is error */
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public static int PERMANENT = 0x04; /* property cannot be deleted */
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public static int ALIAS = 0x08; /* property has an alias id */
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public static int ARGUMENT = 0x10; /* argument to function */
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public static int VARIABLE = 0x20; /* local variable in function */
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public static int HINTED = 0x800; /* found via explicit lookup */
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public boolean isNameString() {return 0 != (_internalFlags & NAME_IS_STRING);}
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public boolean isAliasString(){return 0 != (_internalFlags & ALIAS_IS_STRING);}
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public String getNameString() {
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if(null == _nameString && !isNameString())
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_nameString = Integer.toString(_nameInt);
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return _nameString;
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}
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public int getNameInt() {return _nameInt;}
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public String getAliasString() {
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if(!hasAlias())
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return null;
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if(null == _aliasString && !isAliasString())
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_aliasString = Integer.toString(_aliasInt);
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return _aliasString;
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}
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public int getAliasInt() {return _aliasInt;}
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public Value getValue() {return _value;}
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public int getVarArgSlot() {return _slot;}
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public int getFlags() {return _flags;}
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public boolean canEnumerate() {return 0 != (_flags & ENUMERATE);}
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public boolean isReadOnly() {return 0 != (_flags & READONLY );}
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public boolean isPermanent() {return 0 != (_flags & PERMANENT);}
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public boolean hasAlias() {return 0 != (_flags & ALIAS );}
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public boolean isArgument() {return 0 != (_flags & ARGUMENT );}
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public boolean isVariable() {return 0 != (_flags & VARIABLE );}
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public boolean isHinted() {return 0 != (_flags & HINTED );}
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// override Object
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public String toString() {
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if(null == _string4toString) {
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_string4toString = _flagsString();
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_string4toString += " name = "+ getNameString();
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if(hasAlias())
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_string4toString += ", alias = " + getAliasString();
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if(isArgument() || isVariable())
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_string4toString += ", vararg slot = " + getVarArgSlot();
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_string4toString += ", val = " + _shortValString(_value);
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}
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return _string4toString;
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}
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private String _shortValString(Value v) {
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if(null == v)
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return "null";
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else if(v.isFunction())
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return "[function "+v.getFunctionName()+"]";
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else
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return v.getString();
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}
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private String _flagsString() {
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StringBuffer sb = new StringBuffer(7);
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sb.append(canEnumerate() ? 'e' : '.');
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sb.append(isReadOnly() ? 'r' : '.');
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sb.append(isPermanent() ? 'p' : '.');
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sb.append(hasAlias() ? 'a' : '.');
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sb.append(isArgument() ? 'A' : '.');
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sb.append(isVariable() ? 'V' : '.');
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sb.append(isHinted() ? 'H' : '.');
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return sb.toString();
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}
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// private data...
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private Value _value;
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private String _nameString;
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private int _nameInt;
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private String _aliasString;
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private int _aliasInt;
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private int _flags;
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private int _slot;
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private static final short NAME_IS_STRING = 0x01;
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private static final short ALIAS_IS_STRING = 0x02;
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private short _internalFlags;
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private String _string4toString;
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} |