Use C string instead of chunk for literal text

Use zero-terminated C strings and a separate length field instead of
cmark_chunks. Literal inline text will now be copied from the parent
block's content buffer, slowing the benchmark down by 10-15%.

The node struct never references memory of other nodes now, fixing #309.
Node accessors don't have to check for delayed creation of C strings,
so parsing and iterating all literals using the public API should
actually be faster than before.

1 files changed, 6 insertions, 2 deletions

diff --git a/src/node.h b/src/node.h
index b557f12..fbf449c 100644
--- a/src/node.h
+++ b/src/node.h
@@ -10,7 +10,11 @@ extern "C" {
 
 #include "cmark.h"
 #include "buffer.h"
-#include "chunk.h"
+
+typedef struct {
+  unsigned char *data;
+  bufsize_t len;
+} cmark_literal;
 
 typedef struct {
   cmark_list_type list_type;
@@ -72,7 +76,7 @@ struct cmark_node {
   uint16_t flags;
 
   union {
-    cmark_chunk literal;
+    cmark_literal literal;
     cmark_list list;
     cmark_code code;
     cmark_heading heading;