You are looking at historical revision 14667 of this page. It may differ significantly from its current revision.
Chicken wrapper for the Scheme48 module system.
This egg allows you to compile Scheme48 modules as-is, and use them in your Chicken programs.
Most of the module (or "package") syntax is supported. For information on how to use these, see the Scheme48 manual.
Limitations and caveats
This module system only generates import statements. Libraries are not loaded by import statements. This means you will have to load the libraries exporting the modules yourself prior to using the s48 modules.
The following code actually defines two modules; foo and _foo:
(define-structure foo (export bar) (open scheme) (files foo))
That's because define-structure internally expands to define-structures with only one structure defined. Generating several modules with differing export lists requires one common internal module holding the actual code, which exports all its symbols. If you have several modules defined, the name of the internal module is equal to the first in the list, prefixed by an underscore. If you ask Chicken to generate import libraries while compiling, don't forget to add an extra -j flag to generate the "hidden" import library, as well.
This module also defines the following macro as a replacement for the regular include macro:[syntax] (include-relative filename)
This includes filename just like include would, but if you use include-relative inside that file, it will include files relative to the directory in which filename is located (include would instead just try to find the file relative to the topmost file you're compiling).
This macro must be used to include Scheme 48 module/package files which use files declarations to load external files.
For example, this code:
;; file: /rootpath/foo.scm (include "bar/qux.scm")
;; file: /rootpath/bar/qux.scm (include "mooh/blah.scm")
Would fail with an error because it will try to load /rootpath/mooh/blah.scm.
Whereas this would work:
;; file: /rootpath/foo.scm (use s48-modules) (include-relative "bar/qux.scm")
;; file: /rootpath/bar/qux.scm (include-relative "mooh/blah.scm")
- 0.3 Add include-relative
- 0.2 Tests and minor bugfixes
- 0.1 Initial release
Copyright (c) 2008, Felix L. Winkelmann All rights reserved.
Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:
Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution. Neither the name of the author nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.