diff options
author | Samuel Mimram <smimram@debian.org> | 2008-07-25 15:12:53 +0200 |
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committer | Samuel Mimram <smimram@debian.org> | 2008-07-25 15:12:53 +0200 |
commit | a0cfa4f118023d35b767a999d5a2ac4b082857b4 (patch) | |
tree | dabcac548e299fee1da464c93b3dba98484f45b1 /checker/type_errors.ml | |
parent | 2281410e38ef99d025ea77194585a9bc019fdaa9 (diff) |
Imported Upstream version 8.2~beta3+dfsgupstream/8.2.beta3+dfsg
Diffstat (limited to 'checker/type_errors.ml')
-rw-r--r-- | checker/type_errors.ml | 115 |
1 files changed, 115 insertions, 0 deletions
diff --git a/checker/type_errors.ml b/checker/type_errors.ml new file mode 100644 index 00000000..a96bba6a --- /dev/null +++ b/checker/type_errors.ml @@ -0,0 +1,115 @@ +(************************************************************************) +(* v * The Coq Proof Assistant / The Coq Development Team *) +(* <O___,, * CNRS-Ecole Polytechnique-INRIA Futurs-Universite Paris Sud *) +(* \VV/ **************************************************************) +(* // * This file is distributed under the terms of the *) +(* * GNU Lesser General Public License Version 2.1 *) +(************************************************************************) + +(* $Id: type_errors.ml 8845 2006-05-23 07:41:58Z herbelin $ *) + +open Names +open Term +open Environ + +type unsafe_judgment = constr * constr + +let nf_betaiota c = c + +(* Type errors. *) + +type guard_error = + (* Fixpoints *) + | NotEnoughAbstractionInFixBody + | RecursionNotOnInductiveType of constr + | RecursionOnIllegalTerm of int * constr * int list * int list + | NotEnoughArgumentsForFixCall of int + (* CoFixpoints *) + | CodomainNotInductiveType of constr + | NestedRecursiveOccurrences + | UnguardedRecursiveCall of constr + | RecCallInTypeOfAbstraction of constr + | RecCallInNonRecArgOfConstructor of constr + | RecCallInTypeOfDef of constr + | RecCallInCaseFun of constr + | RecCallInCaseArg of constr + | RecCallInCasePred of constr + | NotGuardedForm of constr + +type arity_error = + | NonInformativeToInformative + | StrongEliminationOnNonSmallType + | WrongArity + +type type_error = + | UnboundRel of int + | UnboundVar of variable + | NotAType of unsafe_judgment + | BadAssumption of unsafe_judgment + | ReferenceVariables of constr + | ElimArity of inductive * sorts_family list * constr * unsafe_judgment + * (sorts_family * sorts_family * arity_error) option + | CaseNotInductive of unsafe_judgment + | WrongCaseInfo of inductive * case_info + | NumberBranches of unsafe_judgment * int + | IllFormedBranch of constr * int * constr * constr + | Generalization of (name * constr) * unsafe_judgment + | ActualType of unsafe_judgment * constr + | CantApplyBadType of + (int * constr * constr) * unsafe_judgment * unsafe_judgment array + | CantApplyNonFunctional of unsafe_judgment * unsafe_judgment array + | IllFormedRecBody of guard_error * name array * int + | IllTypedRecBody of + int * name array * unsafe_judgment array * constr array + +exception TypeError of env * type_error + +let nfj (c,ct) = (c, nf_betaiota ct) + +let error_unbound_rel env n = + raise (TypeError (env, UnboundRel n)) + +let error_unbound_var env v = + raise (TypeError (env, UnboundVar v)) + +let error_not_type env j = + raise (TypeError (env, NotAType j)) + +let error_assumption env j = + raise (TypeError (env, BadAssumption j)) + +let error_reference_variables env id = + raise (TypeError (env, ReferenceVariables id)) + +let error_elim_arity env ind aritylst c pj okinds = + raise (TypeError (env, ElimArity (ind,aritylst,c,pj,okinds))) + +let error_case_not_inductive env j = + raise (TypeError (env, CaseNotInductive j)) + +let error_number_branches env cj expn = + raise (TypeError (env, NumberBranches (nfj cj,expn))) + +let error_ill_formed_branch env c i actty expty = + raise (TypeError (env, + IllFormedBranch (c,i,nf_betaiota actty, nf_betaiota expty))) + +let error_generalization env nvar c = + raise (TypeError (env, Generalization (nvar,c))) + +let error_actual_type env j expty = + raise (TypeError (env, ActualType (j,expty))) + +let error_cant_apply_not_functional env rator randl = + raise (TypeError (env, CantApplyNonFunctional (rator,randl))) + +let error_cant_apply_bad_type env t rator randl = + raise (TypeError (env, CantApplyBadType (t,rator,randl))) + +let error_ill_formed_rec_body env why lna i = + raise (TypeError (env, IllFormedRecBody (why,lna,i))) + +let error_ill_typed_rec_body env i lna vdefj vargs = + raise (TypeError (env, IllTypedRecBody (i,lna,vdefj,vargs))) + + |