/*
* EvalCmd.java
*
* Copyright (c) 1997 Cornell University.
* Copyright (c) 1997 Sun Microsystems, Inc.
*
* See the file "license.terms" for information on usage and
* redistribution of this file, and for a DISCLAIMER OF ALL
* WARRANTIES.
* 
* Included in SQLite3 port to C# for use in testharness only;  2008 Noah B Hart
*
* RCS @(#) $Id: EvalCmd.java,v 1.1.1.1 1998/10/14 21:09:18 cvsadmin Exp $
*
*/
using System;
namespace tcl.lang
{

  /// <summary> This class implements the built-in "eval" command in Tcl.</summary>

  class EvalCmd : Command
  {
    /// <summary> This procedure is invoked to process the "eval" Tcl command.
    /// See the user documentation for details on what it does.
    /// 
    /// </summary>
    /// <param name="interp">the current interpreter.
    /// </param>
    /// <param name="argv">command arguments.
    /// </param>
    /// <exception cref=""> TclException if script causes error.
    /// </exception>

    public TCL.CompletionCode cmdProc( Interp interp, TclObject[] argv )
    {
      if ( argv.Length < 2 )
      {
        throw new TclNumArgsException( interp, 1, argv, "arg ?arg ...?" );
      }

      try
      {
        if ( argv.Length == 2 )
        {
          interp.eval( argv[1], 0 );
        }
        else
        {
          string s = Util.concat( 1, argv.Length - 1, argv );
          interp.eval( s, 0 );
        }
      }
      catch ( TclException e )
      {
        if ( e.getCompletionCode() == TCL.CompletionCode.ERROR )
        {
          interp.addErrorInfo( "\n    (\"eval\" body line " + interp.errorLine + ")" );
        }
        throw;
      }
      return TCL.CompletionCode.RETURN;
    }
  }
}