ikarus/scheme/psyntax.compat.ss

;;; Ikarus Scheme -- A compiler for R6RS Scheme.
;;; Copyright (C) 2006,2007,2008  Abdulaziz Ghuloum
;;; 
;;; This program is free software: you can redistribute it and/or modify
;;; it under the terms of the GNU General Public License version 3 as
;;; published by the Free Software Foundation.
;;; 
;;; This program is distributed in the hope that it will be useful, but
;;; WITHOUT ANY WARRANTY; without even the implied warranty of
;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
;;; General Public License for more details.
;;; 
;;; You should have received a copy of the GNU General Public License
;;; along with this program.  If not, see <http://www.gnu.org/licenses/>.


(library (psyntax compat)
  (export define-record make-parameter parameterize format gensym
          eval-core symbol-value set-symbol-value!
          make-struct-type read-annotated
          annotation? annotation-expression annotation-source
          annotation-stripped
          read-library-source-file
          library-version-mismatch-warning
          file-locator-resolution-error
          label-binding set-label-binding! remove-location
          make-source-position-condition)
  (import 
    (only (ikarus.compiler) eval-core)
    (only (ikarus.reader.annotated) read-library-source-file)
    (ikarus))

  (define (library-version-mismatch-warning name depname filename)
    (fprintf (current-error-port)
        "WARNING: library ~s has an inconsistent dependency \
         on library ~s; file ~s will be recompiled from \
         source.\n"
       name depname filename))

    (define (file-locator-resolution-error libname failed-list)
      (define-condition-type &library-resolution &condition
         make-library-resolution-condition
         library-resolution-condition?
         (library condition-library)
         (files condition-files))
      (raise 
        (condition 
          (make-error)
          (make-who-condition 'expander)
          (make-message-condition
            "cannot locate library in library-path")
          (make-library-resolution-condition 
            libname failed-list))))

  (define-syntax define-record
    (syntax-rules ()
      [(_ name (field* ...) printer)
       (begin
         (define-struct name (field* ...))
         (module ()
            (set-rtd-printer! (type-descriptor name)
              printer)))]
      [(_ name (field* ...))
       (define-struct name (field* ...))]))
  
  (define (set-label-binding! label binding)
    (set-symbol-value! label binding))

  (define (label-binding label)
    (and (symbol-bound? label) (symbol-value label)))
  
  (define (remove-location x)
    (import (ikarus system $symbols))
    ($unintern-gensym x)))