diff options
| author | letouzey | 2012-07-05 16:55:59 +0000 |
|---|---|---|
| committer | letouzey | 2012-07-05 16:55:59 +0000 |
| commit | f93f073df630bb46ddd07802026c0326dc72dafd (patch) | |
| tree | 35035375b5c6260ce6f89ccfbbf95a140e562005 /lib | |
| parent | d655986bc6d54c320a6ddd642cefde4a7f3088a9 (diff) | |
Notation: a new annotation "compat 8.x" extending "only parsing"
Suppose we declare : Notation foo := bar (compat "8.3").
Then each time foo is used in a script :
- By default nothing particular happens (for the moment)
- But we could get a warning explaining that
"foo is bar since coq > 8.3".
For that, either use the command-line option -verb-compat-notations
or the interactive command "Set Verbose Compat Notations".
- There is also a strict mode, where foo is forbidden : the previous
warning is now an error.
For that, either use the command-line option -no-compat-notations
or the interactive command "Unset Compat Notations".
When Coq is launched in compatibility mode (via -compat 8.x),
using a notation tagged "8.x" will never trigger a warning or error.
git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@15514 85f007b7-540e-0410-9357-904b9bb8a0f7
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/flags.ml | 15 | ||||
| -rw-r--r-- | lib/flags.mli | 5 |
2 files changed, 14 insertions, 6 deletions
diff --git a/lib/flags.ml b/lib/flags.ml index b4f6272acf..8cce04c50f 100644 --- a/lib/flags.ml +++ b/lib/flags.ml @@ -38,12 +38,19 @@ let record_print = ref true (* Compatibility mode *) -type compat_version = V8_2 | V8_3 -let compat_version = ref None -let version_strictly_greater v = - match !compat_version with None -> true | Some v' -> v'>v +(* Current means no particular compatibility consideration. + For correct comparisons, this constructor should remain the last one. *) + +type compat_version = V8_2 | V8_3 | Current +let compat_version = ref Current +let version_strictly_greater v = !compat_version > v let version_less_or_equal v = not (version_strictly_greater v) +let pr_version = function + | V8_2 -> "8.2" + | V8_3 -> "8.3" + | Current -> "current" + (* Translate *) let beautify = ref false let make_beautify f = beautify := f diff --git a/lib/flags.mli b/lib/flags.mli index 77399b9e5e..0aceee0459 100644 --- a/lib/flags.mli +++ b/lib/flags.mli @@ -26,10 +26,11 @@ val load_proofs : load_proofs ref val raw_print : bool ref val record_print : bool ref -type compat_version = V8_2 | V8_3 -val compat_version : compat_version option ref +type compat_version = V8_2 | V8_3 | Current +val compat_version : compat_version ref val version_strictly_greater : compat_version -> bool val version_less_or_equal : compat_version -> bool +val pr_version : compat_version -> string val beautify : bool ref val make_beautify : bool -> unit |