mdw@git.distorted.org.uk Git - sod/blob - pre-reorg/tables.lisp

   1 ;;; -*-lisp-*-
   2 ;;;
   3 ;;; Main tables for the translator
   4 ;;;
   5 ;;; (c) 2009 Straylight/Edgeware
   6 ;;;
   7
   8 ;;;----- Licensing notice ---------------------------------------------------
   9 ;;;
  10 ;;; This file is part of the Simple Object Definition system.
  11 ;;;
  12 ;;; SOD is free software; you can redistribute it and/or modify
  13 ;;; it under the terms of the GNU General Public License as published by
  14 ;;; the Free Software Foundation; either version 2 of the License, or
  15 ;;; (at your option) any later version.
  16 ;;;
  17 ;;; SOD is distributed in the hope that it will be useful,
  18 ;;; but WITHOUT ANY WARRANTY; without even the implied warranty of
  19 ;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  20 ;;; GNU General Public License for more details.
  21 ;;;
  22 ;;; You should have received a copy of the GNU General Public License
  23 ;;; along with SOD; if not, write to the Free Software Foundation,
  24 ;;; Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  25
  26 (cl:in-package #:sod)
  27
  28 ;;;--------------------------------------------------------------------------
  29 ;;; Main tables.
  30
  31 (defvar *module-map* (make-hash-table :test #'equal)
  32   "A hash table mapping file truenames (pathnames) to modules.
  33
  34    This is used to prevent multiple inclusion of a single module, which would
  35    be bad.  Usually it maps pathnames to MODULE objects.  As a special case,
  36    the truename a module which is being parsed maps to :IN-PROGRESS, which
  37    can be used to detect dependency cycles.")
  38
  39 (defvar *type-map* (make-hash-table :test #'equal)
  40   "A hash table mapping type names to the C types they describe.
  41
  42    Since a class is a C type, it gets its own entry in here as a C-CLASS-TYPE
  43    object.  This is how we find classes by name: the C-CLASS-TYPE object has
  44    a reference to the underlying SOD-CLASS instance.")
  45
  46 (defparameter *builtin-module* nil
  47   "Built-in module; populated later.")
  48
  49 ;;;--------------------------------------------------------------------------
  50 ;;; Utilities.
  51
  52 (defparameter *clear-the-decks-functions*
  53   '(reset-type-and-module-map
  54     reset-builtin-module))
  55
  56 (defun reset-type-and-module-map ()
  57   "Reset the main hash tables, clearing the translator's state.
  58
  59    One of the *CLEAR-THE-DECKS-FUNCTIONS*."
  60
  61   (setf *module-map* (make-hash-table :test #'equal)
  62         *type-map* (make-hash-table :test #'equal)))
  63
  64 (defun populate-type-map ()
  65   "Store some important simple types in the type map."
  66   (dolist (name '("va_list" "size_t" "ptrdiff_t"))
  67     (setf (gethash name *type-map*)
  68           (make-simple-type name))))
  69
  70 (defun clear-the-decks ()
  71   "Reinitialize the translator's state.
  72
  73    This is mainly useful when testing the translator from a Lisp REPL."
  74   (dolist (func *clear-the-decks-functions*)
  75     (funcall func)))
  76
  77 #+test
  78 (clear-the-decks)
  79
  80 ;;;----- That's all, folks --------------------------------------------------