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;; -*- mode: common-lisp -*-
#|
clasm-6502: An assembler for the 6502 written in Common Lisp.
Copyright (C) 2024 Aleksei Eaves
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|#
#|
To solve the problem of the colliding syntax rules
We can test only the addressin modes we know the opcode to have
This not only solves this problem, it just makes more sense.
Need to use the existing lists to find keywords to watch out for during compilation.
ESPECIALLY run through the output of macro-list to find collisions
This owuld make it simple
|#
(defun macro-pass (program-list)
"Translate a programs macros"
(let ((macro-association-list
(let ((return-alist nil))
(dolist (i program-list)
(if (equal (syntax-rule (cadr i) *line-syntax*) 'macro)
(setf return-alist
(cons (list (first (cadr i)) (car (last (cadr i))))
return-alist))
nil))
return-alist))
(return-list nil))
;; For every line in program list..
(dolist (i program-list)
;; ..excluding the macro lines..
(if (eq (syntax-rule (cadr i) *line-syntax*) 'macro)
nil
;; ..add to return list this value:
(setf return-list
(cons
;; For every word in the line,
(let ((append-list nil))
(dolist (j (cadr i))
(setf append-list
;; add it to the output line, and change whatever is a macro.
(cons (if (assoc j macro-association-list :test #'string=)
(cadr (assoc j macro-association-list :test #'string=))
j)
append-list)))
;; Return the line number and program.
(cons (car i)
(list (reverse append-list))))
return-list))))
;; Return everything.
(reverse return-list)))
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