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Diffstat (limited to 'grammar/compat5b.mlp')
| -rw-r--r-- | grammar/compat5b.mlp | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/grammar/compat5b.mlp b/grammar/compat5b.mlp new file mode 100644 index 00000000..46802a82 --- /dev/null +++ b/grammar/compat5b.mlp @@ -0,0 +1,23 @@ +(************************************************************************) +(* 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)) |