revision: convert to using diff_tree_sha1()

diff --git a/revision.h b/revision.h
index c67c46d716dc99a6236b43f15cf8ea2e64772b7b..88967d6a24df852453f93cb7bc466386347b0c45 100644 (file)
--- a/revision.h
+++ b/revision.h
@@ -5,6 +5,7 @@
 #include "grep.h"
 #include "notes.h"
 #include "commit.h"
+#include "diff.h"
 
 #define SEEN           (1u<<0)
 #define UNINTERESTING   (1u<<1)
@@ -25,6 +26,7 @@
 struct rev_info;
 struct log_info;
 struct string_list;
+struct saved_parents;
 
 struct rev_cmdline_info {
        unsigned int nr;
@@ -190,6 +192,9 @@ struct rev_info {
 
        /* line level range that we are chasing */
        struct decoration line_log_data;
+
+       /* copies of the parent lists, for --full-diff display */
+       struct saved_parents *saved_parents_slab;
 };
 
 extern int ref_excluded(struct string_list *, const char *path);
@@ -281,4 +286,20 @@ typedef enum rewrite_result (*rewrite_parent_fn_t)(struct rev_info *revs, struct
 
 extern int rewrite_parents(struct rev_info *revs, struct commit *commit,
        rewrite_parent_fn_t rewrite_parent);
+
+/*
+ * Save a copy of the parent list, and return the saved copy.  This is
+ * used by the log machinery to retrieve the original parents when
+ * commit->parents has been modified by history simpification.
+ *
+ * You may only call save_parents() once per commit (this is checked
+ * for non-root commits).
+ *
+ * get_saved_parents() will transparently return commit->parents if
+ * history simplification is off.
+ */
+extern void save_parents(struct rev_info *revs, struct commit *commit);
+extern struct commit_list *get_saved_parents(struct rev_info *revs, const struct commit *commit);
+extern void free_saved_parents(struct rev_info *revs);
+
 #endif