source tracking and composite primitives

src/chunk.h

@@ -6,7 +6,12 @@
 #include "common.h"
 #include "object.h"
 
-/** Bytecode chunk */
+typedef struct Bl {
+  Z offset;
+  I row;
+  I col;
+} Bl;
+
 typedef struct Bc {
   I ref;
   const char *name;
@@ -16,6 +21,10 @@ typedef struct Bc {
     O *items;
     Z count, capacity;
   } constants;
+  struct {
+    Bl *items;
+    Z count, capacity;
+  } lines;
 } Bc;
 
 Bc *chunk_new(const char *);
@@ -26,4 +35,7 @@ V chunk_emit_byte(Bc *, U8);
 V chunk_emit_sleb128(Bc *, I);
 I chunk_add_constant(Bc *, O);
 
+V chunk_emit_byte_with_line(Bc *, U8, I, I);
+I chunk_get_line(Bc *, Z, I*);
+
 #endif