This feels like a trainwreck but eh. Changed the way the opcodes are managed. Hopefully this is the right direction when I add support for multiple ASM files.

includes/parser.h

@@ -1,6 +1,7 @@
 #ifndef PARSER_H
 #define PARSER_H
 
+#include <stdint.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include "list.h"
@@ -9,6 +10,34 @@
 
 #define HIGHMEMORY 65535 //64KiB - 1 AKA 0xFFFF
 
-unsigned char* ParseTokens(List*);
+typedef struct {
+    Token* token;
+    //unsigned char terminatingByte;
+    int address;
+    int resolved;
+} Symbol;
+
+typedef struct {
+    TokenType Mnemonic;
+    TokenClass ParameterOneType;
+    TokenClass ParameterTwoType;
+
+    union {
+        uint16_t Constant;
+        Symbol* Address;
+    } ParameterOne;
+
+    union {
+        uint16_t Constant;
+        Symbol* Address;
+    } ParameterTwo;
+} IROpcode;
+
+typedef struct {
+    List* Opcodes;
+    List* SymbolsTable;
+} IRState;
+
+IRState* ParseTokens(List*);
 
 #endif