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authorGravatar Pierre Letouzey <pierre.letouzey@inria.fr>2016-06-21 19:34:51 +0200
committerGravatar Pierre Letouzey <pierre.letouzey@inria.fr>2016-06-21 20:35:36 +0200
commit39861a12445742b481496baf2caafeb391773aba (patch)
tree8e38399836572cf13947d28c4ebd6eb4e2ca4240 /grammar/compat5b.mlp
parenta1a86e6572bbae9e515cc72d7072322e5a11b49e (diff)
Makefile: compat5* moved in grammar/, less -I given to camlp4o
Diffstat (limited to 'grammar/compat5b.mlp')
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+(************************************************************************)
+(* v * The Coq Proof Assistant / The Coq Development Team *)
+(* <O___,, * INRIA - CNRS - LIX - LRI - PPS - Copyright 1999-2016 *)
+(* \VV/ **************************************************************)
+(* // * This file is distributed under the terms of the *)
+(* * GNU Lesser General Public License Version 2.1 *)
+(************************************************************************)
+
+(** Adding a bit of camlp5 syntax to camlp4 for compatibility:
+ - EXTEND ... becomes EXTEND Gram ...
+*)
+
+open Camlp4.PreCast
+
+let rec my_token_filter = parser
+ | [< '(KEYWORD "EXTEND",_ as t); s >] ->
+ [< 't; '(UIDENT "Gram", Loc.ghost); my_token_filter s >]
+ | [< 'tokloc; s >] -> [< 'tokloc; my_token_filter s >]
+ | [< >] -> [< >]
+
+let _ =
+ Token.Filter.define_filter (Gram.get_filter())
+ (fun prev strm -> prev (my_token_filter strm))