12-08-2010
Here class X is in default package (actually called unnamed package) and class Y is in a named package (ypkg). An unnamed package class can't be imported in any other package. To import a class in some other named package, that class has to be in some named package.
So you can put class X in some package and then import it.
Classes in unnamed package can ONLY be used by other classes in unnamed package. They are visible to other members of the unnamed package since they
are in the same package, but they are not visible to compilation units in
other packages.
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LEARN ABOUT MOJAVE
pt_peg_import_container
pt::peg::import::container(n) Parser Tools pt::peg::import::container(n)
__________________________________________________________________________________________________________________________________________________
NAME
pt::peg::import::container - PEG Import Plugin. From CONTAINER format
SYNOPSIS
package require Tcl 8.5
_________________________________________________________________
DESCRIPTION
Are you lost ? Do you have trouble understanding this document ? In that case please read the overview provided by the Introduction to
Parser Tools. This document is the entrypoint to the whole system the current package is a part of.
This package does not exist. There is no need for it. The CONTAINER format for parsing expression grammars is a piece of Tcl code which,
then sourced, provides a class whose instances have the grammar we wish to import loaded. Another way of looking at this is, the CONTAINER
output is its own import package.
BUGS, IDEAS, FEEDBACK
This document, and the package it describes, will undoubtedly contain bugs and other problems. Please report such in the category pt of
the Tcllib SF Trackers [http://sourceforge.net/tracker/?group_id=12883]. Please also report any ideas for enhancements you may have for
either package and/or documentation.
KEYWORDS
EBNF, LL(k), PEG, TDPL, context-free languages, expression, grammar, matching, parser, parsing expression, parsing expression grammar, push
down automaton, recursive descent, state, top-down parsing languages, transducer
CATEGORY
Parsing and Grammars
COPYRIGHT
Copyright (c) 2009 Andreas Kupries <andreas_kupries@users.sourceforge.net>
pt 0 pt::peg::import::container(n)