public TCL.CompletionCode cmdProc( Interp interp, TclObject[] argv )
{
// Create the call frame and parameter bindings
CallFrame frame = interp.newCallFrame( this, argv );
// Execute the body
interp.pushDebugStack( srcFileName, srcLineNumber );
try
{
Parser.eval2( interp, body.array, body.index, body_length, 0 );
}
catch ( TclException e )
{
TCL.CompletionCode code = e.getCompletionCode();
if ( code == TCL.CompletionCode.RETURN )
{
TCL.CompletionCode realCode = interp.updateReturnInfo();
if ( realCode != TCL.CompletionCode.OK )
{
e.setCompletionCode( realCode );
throw;
}
}
else if ( code == TCL.CompletionCode.ERROR )
{
interp.addErrorInfo( "\n (procedure \"" + argv[0] + "\" line " + interp.errorLine + ")" );
throw;
}
else if ( code == TCL.CompletionCode.BREAK )
{
throw new TclException( interp, "invoked \"break\" outside of a loop" );
}
else if ( code == TCL.CompletionCode.CONTINUE )
{
throw new TclException( interp, "invoked \"continue\" outside of a loop" );
}
else
{
throw;
}
}
finally
{
interp.popDebugStack();
// The check below is a hack. The problem is that there
// could be unset traces on the variables, which cause
// scripts to be evaluated. This will clear the
// errInProgress flag, losing stack trace information if
// the procedure was exiting with an error. The code
// below preserves the flag. Unfortunately, that isn't
// really enough: we really should preserve the errorInfo
// variable too (otherwise a nested error in the trace
// script will trash errorInfo). What's really needed is
// a general-purpose mechanism for saving and restoring
// interpreter state.
if ( interp.errInProgress )
{
frame.dispose();
interp.errInProgress = true;
}
else
{
frame.dispose();
}
}
return TCL.CompletionCode.RETURN;
}
