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/jEdit/tags/jedit-4-2-pre4/bsh/BSHAmbiguousName.java

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Java | 106 lines | 57 code | 12 blank | 37 comment | 0 complexity | b3b1610b91d08af36d5a9d328cef9d3e MD5 | raw file
  1/*****************************************************************************
  2 *                                                                           *
  3 *  This file is part of the BeanShell Java Scripting distribution.          *
  4 *  Documentation and updates may be found at http://www.beanshell.org/      *
  5 *                                                                           *
  6 *  Sun Public License Notice:                                               *
  7 *                                                                           *
  8 *  The contents of this file are subject to the Sun Public License Version  *
  9 *  1.0 (the "License"); you may not use this file except in compliance with *
 10 *  the License. A copy of the License is available at http://www.sun.com    * 
 11 *                                                                           *
 12 *  The Original Code is BeanShell. The Initial Developer of the Original    *
 13 *  Code is Pat Niemeyer. Portions created by Pat Niemeyer are Copyright     *
 14 *  (C) 2000.  All Rights Reserved.                                          *
 15 *                                                                           *
 16 *  GNU Public License Notice:                                               *
 17 *                                                                           *
 18 *  Alternatively, the contents of this file may be used under the terms of  *
 19 *  the GNU Lesser General Public License (the "LGPL"), in which case the    *
 20 *  provisions of LGPL are applicable instead of those above. If you wish to *
 21 *  allow use of your version of this file only under the  terms of the LGPL *
 22 *  and not to allow others to use your version of this file under the SPL,  *
 23 *  indicate your decision by deleting the provisions above and replace      *
 24 *  them with the notice and other provisions required by the LGPL.  If you  *
 25 *  do not delete the provisions above, a recipient may use your version of  *
 26 *  this file under either the SPL or the LGPL.                              *
 27 *                                                                           *
 28 *  Patrick Niemeyer (pat@pat.net)                                           *
 29 *  Author of Learning Java, O'Reilly & Associates                           *
 30 *  http://www.pat.net/~pat/                                                 *
 31 *                                                                           *
 32 *****************************************************************************/
 33
 34
 35package bsh;
 36
 37class BSHAmbiguousName extends SimpleNode
 38{
 39    public String text;
 40
 41    BSHAmbiguousName(int id) { super(id); }
 42	
 43    public Name getName( NameSpace namespace )
 44    {
 45        return namespace.getNameResolver( text );
 46    }
 47
 48    public Object toObject( CallStack callstack, Interpreter interpreter ) 
 49		throws EvalError
 50    {
 51		return toObject( callstack, interpreter, false );
 52    }
 53
 54    Object toObject( 
 55		CallStack callstack, Interpreter interpreter, boolean forceClass ) 
 56		throws EvalError
 57    {
 58		try {
 59        	return 
 60				getName( callstack.top() ).toObject( 
 61					callstack, interpreter, forceClass );
 62		} catch ( UtilEvalError e ) {
 63			throw e.toEvalError( this, callstack );
 64		}
 65    }
 66
 67    public Class toClass( CallStack callstack, Interpreter interpreter ) 
 68		throws EvalError
 69    {
 70		try {
 71        	return getName( callstack.top() ).toClass();
 72		} catch ( ClassNotFoundException e ) {
 73			throw new EvalError( e.getMessage(), this, callstack );
 74		} catch ( UtilEvalError e2 ) {
 75			// ClassPathException is a type of UtilEvalError
 76			throw e2.toEvalError( this, callstack );
 77		}
 78    }
 79
 80    public LHS toLHS( CallStack callstack, Interpreter interpreter)
 81		throws EvalError
 82    {
 83		try {
 84			return getName( callstack.top() ).toLHS( callstack, interpreter );
 85		} catch ( UtilEvalError e ) {
 86			throw e.toEvalError( this, callstack );
 87		}
 88    }
 89
 90	/*
 91		The interpretation of an ambiguous name is context sensitive.
 92		We disallow a generic eval( ).
 93	*/
 94    public Object eval( CallStack callstack, Interpreter interpreter ) 
 95		throws EvalError
 96    {
 97		throw new InterpreterError( 
 98			"Don't know how to eval an ambiguous name!"
 99			+"  Use toObject() if you want an object." );
100    }
101
102	public String toString() {
103		return "AmbigousName: "+text;
104	}
105}
106