/*
* TimeCmd.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: TimeCmd.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 "time" command in Tcl.</summary>

  class TimeCmd : Command
  {
    /// <summary> See Tcl user documentation for details.</summary>

    public TCL.CompletionCode cmdProc( Interp interp, TclObject[] argv )
    {
      if ( ( argv.Length < 2 ) || ( argv.Length > 3 ) )
      {
        throw new TclNumArgsException( interp, 1, argv, "script ?count?" );
      }

      int count;
      if ( argv.Length == 2 )
      {
        count = 1;
      }
      else
      {
        count = TclInteger.get( interp, argv[2] );
      }

      long startTime = System.DateTime.Now.Ticks;
      for ( int i = 0; i < count; i++ )
      {
        interp.eval( argv[1], 0 );
      }
      long endTime = System.DateTime.Now.Ticks;
      long uSecs = ( ( ( endTime - startTime ) / 10 ) / count );
      if ( uSecs == 1 )
      {
        interp.setResult( TclString.newInstance( "1 microsecond per iteration" ) );
      }
      else
      {
        interp.setResult( TclString.newInstance( uSecs + " microseconds per iteration" ) );
      }
      return TCL.CompletionCode.RETURN;
    }
  }
}