More sourcepos! (#169)

* open_new_blocks: always create child before advancing offset

* Source map

* Extent's typology

* In-depth python bindings

1 files changed, 66 insertions, 0 deletions

diff --git a/src/source_map.h b/src/source_map.h
new file mode 100644
index 0000000..619a073
--- /dev/null
+++ b/src/source_map.h
@@ -0,0 +1,66 @@
+#ifndef CMARK_SOURCE_MAP_H
+#define CMARK_SOURCE_MAP_H
+
+#include "cmark.h"
+#include "config.h"
+
+typedef struct _cmark_source_map
+{
+  cmark_source_extent *head;
+  cmark_source_extent *tail;
+  cmark_source_extent *cursor;
+  cmark_source_extent *next_cursor;
+  uint64_t cursor_offset;
+  cmark_mem *mem;
+} cmark_source_map;
+
+struct cmark_source_extent
+{
+  uint64_t start;
+  uint64_t stop;
+  struct cmark_source_extent *next;
+  struct cmark_source_extent *prev;
+  cmark_node *node;
+  cmark_extent_type type;
+};
+
+cmark_source_map    * source_map_new          (cmark_mem *mem);
+
+void                  source_map_free         (cmark_source_map *self);
+
+bool                  source_map_check        (cmark_source_map *self,
+                                               uint64_t total_length);
+
+void                  source_map_pretty_print (cmark_source_map *self);
+
+cmark_source_extent * source_map_append_extent(cmark_source_map *self,
+                                               uint64_t start,
+                                               uint64_t stop,
+                                               cmark_node *node,
+                                               cmark_extent_type type);
+
+cmark_source_extent * source_map_insert_extent(cmark_source_map *self,
+                                               cmark_source_extent *previous,
+                                               uint64_t start,
+                                               uint64_t stop,
+                                               cmark_node *node,
+                                               cmark_extent_type type);
+
+cmark_source_extent * source_map_free_extent  (cmark_source_map *self,
+                                               cmark_source_extent *extent);
+
+cmark_source_extent * source_map_stitch_extent(cmark_source_map *self,
+                                               cmark_source_extent *extent,
+                                               cmark_node *node,
+                                               uint64_t total_length);
+
+cmark_source_extent * source_map_splice_extent(cmark_source_map *self,
+                                               uint64_t start,
+                                               uint64_t stop,
+                                               cmark_node *node,
+                                               cmark_extent_type type);
+
+bool                  source_map_start_cursor (cmark_source_map *self,
+                                               cmark_source_extent *cursor);
+
+#endif