Added more definitions.

Headers/Assembler/SagittariusAssembler.h

@@ -62,6 +62,9 @@
  */
 typedef struct Sag_Str{
     char* head;
+    char* file;
+    uint64_t line;
+    uint64_t col; // The column where the string starts, counting from 0. This is used for error reporting and debugging purposes.
     uint64_t start;
     uint64_t length;
 } Sag_Str;