From a3ca9791335b65b70eecf41122cf1e5d8eb5abe0 Mon Sep 17 00:00:00 2001
From: Maxwell Jeffress <maxwelljeffress@proton.me>
Date: Wed, 21 Jan 2026 16:02:13 +1100
Subject: [PATCH] Add not to compiler

---
 README.md      |  1 +
 src/compiler.c | 27 +++++++++++++++++++++++++++
 2 files changed, 28 insertions(+)

diff --git a/README.md b/README.md
index 9240c35..acfb242 100644
--- a/README.md
+++ b/README.md
@@ -114,6 +114,7 @@ Supported instructions so far:
 * inequal
 * greater
 * lesser
+* not
 * jump
 * if
 * @ (label creation)
diff --git a/src/compiler.c b/src/compiler.c
index 716aed9..b2c2dcb 100644
--- a/src/compiler.c
+++ b/src/compiler.c
@@ -221,6 +221,33 @@ char* compileGroundProgram(GroundProgram* program) {
 
                 break;
             }
+            case NOT: {
+                if (gi.args.length < 2) {
+                    runtimeError(TOO_FEW_ARGS, "Expecting 2 args", &gi, i);
+                }
+                if (gi.args.length > 2) {
+                    runtimeError(TOO_MANY_ARGS, "Expecting 2 args", &gi, i);
+                }
+                if (gi.args.args[0].type != VALUE && gi.args.args[0].type != VALREF) {
+                    runtimeError(ARG_TYPE_MISMATCH, "Expecting an Int (for now) for arg 1", &gi, i);
+                }
+                if (gi.args.args[1].type != DIRREF) {
+                    runtimeError(ARG_TYPE_MISMATCH, "Expecting a DirectRef", &gi, i);
+                }
+
+                char* varName = gi.args.args[1].value.refName;
+
+                APPEND_ESTR(start, "  ; not\n");
+                APPEND_ESTR(start, "  mov rax, ");
+                APPEND_ESTR(start, processValueString(gi.args.args[0]));
+                APPEND_ESTR(start, "\n");
+                APPEND_ESTR(start, "  xor rax, 1\n");
+                APPEND_ESTR(start, "  mov [");
+                APPEND_ESTR(start, varName);
+                APPEND_ESTR(start, "], rax\n");
+
+                break;
+            }
             case ADD: {
                 if (gi.args.length < 3) {
                     runtimeError(TOO_FEW_ARGS, "Expecting 2 args for add instruction", &gi, i);