X-Git-Url: http://git.annexia.org/?a=blobdiff_plain;f=TODO;h=900ae212482a35d8eb90088f3861d417f347cbf7;hb=64bcd448dc8787b82828a49edb709436ec2de93d;hp=74551a6175ed80d54505f0f849e0a42971861419;hpb=161ecfb3d3c9aa5c934a956cec1bf206029a9c41;p=ocaml-bitstring.git

diff --git a/TODO b/TODO
index 74551a6..900ae21 100644
--- a/TODO
+++ b/TODO
@@ -9,7 +9,7 @@ Major to-do items.
 
 (4) Provide UInt32 and UInt64 types.
 
-(5) Allow for specific offsets and alignment.  Something like this:
+(5) DONE - Allow for specific offsets and alignment.  Something like this:
 
     { start : 16;
       another : 16 : offset(256);   (* location would be 256 bits from start *)
@@ -33,7 +33,7 @@ Major to-do items.
     Make the error locations fine-grained, particularly so they point to
     individual fields, not the whole match.
 
-(10) Cross-module, persistent, named patterns, see:
+(10) DONE - Cross-module, persistent, named patterns, see:
   http://caml.inria.fr/pub/ml-archives/caml-list/2008/04/25992c9c9fa999fe1d35d961dd9917a2.en.html
 
 (11) DONE -
@@ -49,11 +49,52 @@ Major to-do items.
 
 (12) DONE - More constant field lengths.
 
-(13) Implement native endian functions.
+(13) PARTLY DONE - Implement native endian functions.
 
-(14) A proper test suite.
+(14) PARTLY DONE - A proper test suite.
 
-(15) More examples:
+(15) DONE - More examples:
 
     ELF binaries
     GIF images
+
+(16) We now know the offset of the current field relative to the
+     whole match.  This may allow more efficient aligned versions
+     of functions to be called (at compile time).  However do note
+     that the offset in the bitstring is usually not known.
+
+(17) PARTLY DONE - Fix the META file.  Current one is very broken.
+
+(18) DONE - check() qualifier:
+
+     { field : 16 : check (field > 100) }
+
+     The check(expr) qualifier will abort the rest of the match if the
+     expression is false.
+
+(19) DONE - bind() qualifier:
+
+     { field : 16 : bind (field * 3) }
+       ^pattern           ^new value
+
+     The bind(expr) qualifier binds the pattern to a new value,
+     equivalent to doing:
+
+     let field = field * 3 in
+     (* remainder of match *)
+
+     There is a question of whether bind() should run before or
+     after when() [best is probably when() first, then bind()].
+
+(20) DONE - save_offset_to() qualifier:
+
+     { field : 16 : save_offset_to (offset), bind (field - offset) }
+
+     or:
+
+     { field : 16 : save_offset_to (field_offset) } ->
+       printf "the offset of field (%d) is %d\n" field field_offset
+
+     save_offset_to(patt) binds the current match offset to
+     the variable, for later use within bind(), when() or
+     any later parts of the match.