Revised infrastructure for lazy loading of opaque proofs

 Get rid of the LightenLibrary hack : no more last-minute
 collect of opaque terms and Obj.magic tricks. Instead, we
 make coqc accumulate the opaque terms as soon as constant_bodies
 are created outside sections. In these cases, the opaque
 terms are placed in a special table, and some (DirPath.t * int)
 are used as indexes in constant_body. In an interactive session,
 the local opaque terms stay directly stored in the constant_body.

 The structure of .vo file stays similar : magic number, regular
 library structure, digest of the first part, array of opaque terms.
 In addition, we now have a final checksum for checking the
 integrity of the whole .vo file. The other difference is that
 lazy_constr aren't changed into int indexes in .vo files, but are
 now coded as (substitution list * DirPath.t * int). In particular
 this approach allows to refer to opaque terms from another
 library. This (and accumulating substitutions in lazy_constr)
 seems to greatly help decreasing the size of opaque tables :
 -20% of vo size on the standard library :-). The compilation times
 are slightly better, but that can be statistic noise.

 The -force-load-proofs isn't active anymore : it behaves now
 just like -lazy-load-proofs. The -dont-load-proofs mode has
 slightly changed : opaque terms aren't seen as axioms anymore,
 but accessing their bodies will raise an error.

 Btw, API change : Declareops.body_of_constant now produces directly
 a constr option instead of a constr_substituted option

git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@16382 85f007b7-540e-0410-9357-904b9bb8a0f7

1 files changed, 4 insertions, 4 deletions

diff --git a/kernel/declareops.mli b/kernel/declareops.mli
index 1616e4639..c4d67ba52 100644
--- a/kernel/declareops.mli
+++ b/kernel/declareops.mli
@@ -8,7 +8,6 @@
 
 open Declarations
 open Mod_subst
-open Lazyconstr
 
 (** Operations concerning types in [Declarations] :
     [constant_body], [mutual_inductive_body], [module_body] ... *)
@@ -18,13 +17,14 @@ open Lazyconstr
 val subst_const_def : substitution -> constant_def -> constant_def
 val subst_const_body : substitution -> constant_body -> constant_body
 
-(** Is there a actual body in const_body or const_body_opaque ? *)
+(** Is there a actual body in const_body ? *)
 
 val constant_has_body : constant_body -> bool
 
-(** Accessing const_body_opaque or const_body *)
+(** Accessing const_body, forcing access to opaque proof term if needed.
+    Only use this function if you know what you're doing. *)
 
-val body_of_constant : constant_body -> constr_substituted option
+val body_of_constant : constant_body -> Term.constr option
 
 val is_opaque : constant_body -> bool