From 5fd0592e0bf449ec25392d2cb1b4c3b45b9cd718 Mon Sep 17 00:00:00 2001
From: aleksei <aleksei@aj.org>
Date: Sun, 14 Apr 2024 12:34:40 +1000
Subject: Some housekeeping

---
 macro.lisp | 65 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 65 insertions(+)
 create mode 100644 macro.lisp

(limited to 'macro.lisp')

diff --git a/macro.lisp b/macro.lisp
new file mode 100644
index 0000000..39070ab
--- /dev/null
+++ b/macro.lisp
@@ -0,0 +1,65 @@
+;; -*- 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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