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(* $Id$ *)
open Pp
open Names
open Term
open Sign
open Environ
(* Type errors. *)
type guard_error =
(* Fixpoints *)
| NotEnoughAbstractionInFixBody
| RecursionNotOnInductiveType
| RecursionOnIllegalTerm
| NotEnoughArgumentsForFixCall
(* 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
type type_error =
| UnboundRel of int
| NotAType of unsafe_judgment
| BadAssumption of constr
| ReferenceVariables of identifier
| ElimArity of inductive * constr list * constr * constr * constr
* (constr * constr * string) option
| CaseNotInductive of constr * constr
| NumberBranches of constr * constr * int
| IllFormedBranch of constr * int * constr * constr
| Generalization of (name * types) * unsafe_judgment
| ActualType of constr * constr * constr
| CantApplyBadType of (int * constr * constr)
* unsafe_judgment * unsafe_judgment list
| CantApplyNonFunctional of unsafe_judgment * unsafe_judgment list
| IllFormedRecBody of guard_error * name list * int * constr array
| IllTypedRecBody of int * name list * unsafe_judgment array
* types array
exception TypeError of path_kind * env * type_error
let env_ise sigma env =
map_context (Reduction.nf_ise1 sigma) env
let error_unbound_rel k env sigma n =
raise (TypeError (k, env_ise sigma env, UnboundRel n))
let error_not_type k env c =
raise (TypeError (k, env, NotAType c))
let error_assumption k env c =
raise (TypeError (k, env, BadAssumption c))
let error_reference_variables k env id =
raise (TypeError (k, env, ReferenceVariables id))
let error_elim_arity k env ind aritylst c p pt okinds =
raise (TypeError (k, env, ElimArity (ind,aritylst,c,p,pt,okinds)))
let error_case_not_inductive k env c ct =
raise (TypeError (k, env, CaseNotInductive (c,ct)))
let error_number_branches k env c ct expn =
raise (TypeError (k, env, NumberBranches (c,ct,expn)))
let error_ill_formed_branch k env c i actty expty =
raise (TypeError (k, env, IllFormedBranch (c,i,actty,expty)))
let error_generalization k env sigma nvar c =
raise (TypeError (k, env_ise sigma env, Generalization (nvar,c)))
let error_actual_type k env c actty expty =
raise (TypeError (k, env, ActualType (c,actty,expty)))
let error_cant_apply_not_functional k env rator randl =
raise (TypeError (k, env, CantApplyNonFunctional (rator,randl)))
let error_cant_apply_bad_type k env sigma t rator randl =
raise(TypeError (k, env_ise sigma env, CantApplyBadType (t,rator,randl)))
let error_ill_formed_rec_body k env why lna i vdefs =
raise (TypeError (k, env, IllFormedRecBody (why,lna,i,vdefs)))
let error_ill_typed_rec_body k env i lna vdefj vargs =
raise (TypeError (k, env, IllTypedRecBody (i,lna,vdefj,vargs)))
|
