Cleanup/refactoring of tags.cc. No functional changes. I've been

running with and without this patch applied for about a week, and none
of my saves have broken, so I'm ready to commit it.

- Tag system no longer uses one big (shared!) global buffer.  This
  was the original impetus behind the change...
- Change every use of tagHeader into reader or writer (touches a lot).
- Split tagHeader into two classes: reader and writer.  Turns out
  every place that used tagHeader only cared about reading or writing
  and not about tags at all.  There was nothing left in tagHeader, so
  it disappeared along with a bunch of grotty special-case code.
- Not done: merge the files.cc read/writeThing code with the tags.cc
  marshall/unmarshallThing code.  This patch is big enough already.



git-svn-id: https://crawl-ref.svn.sourceforge.net/svnroot/crawl-ref/trunk@3685 c06c8d41-db1a-0410-9941-cceddc491573

1 files changed, 4 insertions, 3 deletions

diff --git a/crawl-ref/source/externs.h b/crawl-ref/source/externs.h
index c4fb8497b0..8c7816d79f 100644
--- a/crawl-ref/source/externs.h
+++ b/crawl-ref/source/externs.h
@@ -1293,7 +1293,8 @@ struct map_cell
 };
 
 class map_marker;
-struct tagHeader;
+class reader;
+class writer;
 class map_markers
 {
 public:
@@ -1317,8 +1318,8 @@ public:
                             const std::string &key);
     void clear();
 
-    void write(tagHeader &th) const;
-    void read(tagHeader &);
+    void write(writer &) const;
+    void read(reader &);
 
 private:
     typedef std::multimap<coord_def, map_marker *> dgn_marker_map;