Expanded the tokenizer to recognize some opcodes and registers.

src/opcodes.c

@@ -0,0 +1,42 @@
+#include "../includes/opcodes.h"
+
+char *opcodes[OPCODECOUNT] = {
+    "copy",
+    "add",
+    "sub",
+    "jz",
+    "int",
+    "hlt",
+    "ret"
+};
+
+char *registers[REGISTERCOUNT] = {
+    "r1",
+    "r2",
+    "r3",
+    "r4",
+    "r5",
+    "r6",
+    "r7",
+    "r8"
+};
+
+int IsOpcode(const char* text) {
+    if (!text) return 0;
+
+    for(int i = 0; i < OPCODECOUNT; i++) {
+        if (strcmp(opcodes[i], text) == 0) return 1;
+    }
+
+    return 0;
+}
+
+int IsRegister(const char* text) {
+    if (!text) return 0;
+
+    for(int i = 0; i < REGISTERCOUNT; i++) {
+        if (strcmp(registers[i], text) == 0) return 1;
+    }
+
+    return 0;
+}