diff options
| -rw-r--r-- | editor.c | 20 |
1 files changed, 12 insertions, 8 deletions
@@ -35,18 +35,22 @@ struct Buffer { */ typedef struct Piece Piece; struct Piece { - Editor *editor; /* editor to which this piece belongs */ - Piece *prev, *next; /* pointers to the logical predecessor/successor */ - Piece *global_prev, *global_next; /* double linked list in order of allocation, used to free individual pieces */ - const char *data; /* pointer into a Buffer holding the data */ - size_t len; /* the lenght in number of bytes starting from content */ + Editor *editor; /* editor to which this piece belongs */ + Piece *prev, *next; /* pointers to the logical predecessor/successor */ + Piece *global_prev; /* double linked list in order of allocation, */ + Piece *global_next; /* used to free individual pieces */ + const char *data; /* pointer into a Buffer holding the data */ + size_t len; /* the lenght in number of bytes starting from content */ + int index; /* unique index identifiying the piece */ // size_t line_count; - int index; /* unique index identifiying the piece */ }; +/* used to transform a global position (byte offset starting from the begining + * of the text) into an offset relative to piece. + */ typedef struct { - Piece *piece; - size_t off; + Piece *piece; /* piece holding the location */ + size_t off; /* offset into the piece in bytes */ } Location; /* A Span holds a certain range of pieces. Changes to the document are allways |