diff options
Diffstat (limited to 'pretyping/pattern.ml')
-rw-r--r-- | pretyping/pattern.ml | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/pretyping/pattern.ml b/pretyping/pattern.ml new file mode 100644 index 00000000..be7ebe49 --- /dev/null +++ b/pretyping/pattern.ml @@ -0,0 +1,44 @@ +(************************************************************************) +(* * The Coq Proof Assistant / The Coq Development Team *) +(* v * INRIA, CNRS and contributors - Copyright 1999-2018 *) +(* <O___,, * (see CREDITS file for the list of authors) *) +(* \VV/ **************************************************************) +(* // * This file is distributed under the terms of the *) +(* * GNU Lesser General Public License Version 2.1 *) +(* * (see LICENSE file for the text of the license) *) +(************************************************************************) + +open Names + +(** {5 Patterns} *) + +(** Cases pattern variables *) +type patvar = Id.t + +type case_info_pattern = + { cip_style : Constr.case_style; + cip_ind : inductive option; + cip_ind_tags : bool list option; (** indicates LetIn/Lambda in arity *) + cip_extensible : bool (** does this match end with _ => _ ? *) } + +type constr_pattern = + | PRef of GlobRef.t + | PVar of Id.t + | PEvar of Evar.t * constr_pattern array + | PRel of int + | PApp of constr_pattern * constr_pattern array + | PSoApp of patvar * constr_pattern list + | PProj of Projection.t * constr_pattern + | PLambda of Name.t * constr_pattern * constr_pattern + | PProd of Name.t * constr_pattern * constr_pattern + | PLetIn of Name.t * constr_pattern * constr_pattern option * constr_pattern + | PSort of Glob_term.glob_sort + | PMeta of patvar option + | PIf of constr_pattern * constr_pattern * constr_pattern + | PCase of case_info_pattern * constr_pattern * constr_pattern * + (int * bool list * constr_pattern) list (** index of constructor, nb of args *) + | PFix of (int array * int) * (Name.t array * constr_pattern array * constr_pattern array) + | PCoFix of int * (Name.t array * constr_pattern array * constr_pattern array) + +(** Nota : in a [PCase], the array of branches might be shorter than + expected, denoting the use of a final "_ => _" branch *) |