author | haftmann |
Fri, 05 Dec 2008 18:43:42 +0100 | |
changeset 29006 | abe0f11cfa4e |
parent 28965 | 1de908189869 |
child 29097 | 68245155eb58 |
permissions | -rw-r--r-- |
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(* Title: HOL/Nominal/nominal_primrec.ML |
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ID: $Id$ |
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Author: Stefan Berghofer, TU Muenchen and Norbert Voelker, FernUni Hagen |
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Package for defining functions on nominal datatypes by primitive recursion. |
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Taken from HOL/Tools/primrec_package.ML |
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*) |
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signature NOMINAL_PRIMREC = |
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sig |
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val add_primrec: string -> string list option -> string option -> |
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((Binding.T * string) * Attrib.src list) list -> theory -> Proof.state |
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val add_primrec_unchecked: string -> string list option -> string option -> |
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((Binding.T * string) * Attrib.src list) list -> theory -> Proof.state |
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val add_primrec_i: string -> term list option -> term option -> |
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((Binding.T * term) * attribute list) list -> theory -> Proof.state |
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val add_primrec_unchecked_i: string -> term list option -> term option -> |
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((Binding.T * term) * attribute list) list -> theory -> Proof.state |
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end; |
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structure NominalPrimrec : NOMINAL_PRIMREC = |
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struct |
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open DatatypeAux; |
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exception RecError of string; |
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fun primrec_err s = error ("Nominal primrec definition error:\n" ^ s); |
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fun primrec_eq_err thy s eq = |
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primrec_err (s ^ "\nin\n" ^ quote (Syntax.string_of_term_global thy eq)); |
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(* preprocessing of equations *) |
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fun process_eqn thy eq rec_fns = |
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let |
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val (lhs, rhs) = |
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if null (term_vars eq) then |
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HOLogic.dest_eq (HOLogic.dest_Trueprop (Logic.strip_imp_concl eq)) |
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handle TERM _ => raise RecError "not a proper equation" |
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else raise RecError "illegal schematic variable(s)"; |
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val (recfun, args) = strip_comb lhs; |
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val fnameT = dest_Const recfun handle TERM _ => |
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raise RecError "function is not declared as constant in theory"; |
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val (ls', rest) = take_prefix is_Free args; |
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val (middle, rs') = take_suffix is_Free rest; |
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val rpos = length ls'; |
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val (constr, cargs') = if null middle then raise RecError "constructor missing" |
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else strip_comb (hd middle); |
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val (cname, T) = dest_Const constr |
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handle TERM _ => raise RecError "ill-formed constructor"; |
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val (tname, _) = dest_Type (body_type T) handle TYPE _ => |
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raise RecError "cannot determine datatype associated with function" |
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val (ls, cargs, rs) = |
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(map dest_Free ls', map dest_Free cargs', map dest_Free rs') |
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handle TERM _ => raise RecError "illegal argument in pattern"; |
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val lfrees = ls @ rs @ cargs; |
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fun check_vars _ [] = () |
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| check_vars s vars = raise RecError (s ^ commas_quote (map fst vars)) |
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in |
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if length middle > 1 then |
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raise RecError "more than one non-variable in pattern" |
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else |
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(check_vars "repeated variable names in pattern: " (duplicates (op =) lfrees); |
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check_vars "extra variables on rhs: " |
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(map dest_Free (term_frees rhs) \\ lfrees); |
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case AList.lookup (op =) rec_fns fnameT of |
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NONE => |
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(fnameT, (tname, rpos, [(cname, (ls, cargs, rs, rhs, eq))]))::rec_fns |
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| SOME (_, rpos', eqns) => |
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if AList.defined (op =) eqns cname then |
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raise RecError "constructor already occurred as pattern" |
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else if rpos <> rpos' then |
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raise RecError "position of recursive argument inconsistent" |
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else |
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AList.update (op =) (fnameT, (tname, rpos, (cname, (ls, cargs, rs, rhs, eq))::eqns)) |
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rec_fns) |
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end |
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handle RecError s => primrec_eq_err thy s eq; |
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val param_err = "Parameters must be the same for all recursive functions"; |
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fun process_fun thy descr rec_eqns (i, fnameT as (fname, _)) (fnameTs, fnss) = |
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let |
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val (_, (tname, _, constrs)) = List.nth (descr, i); |
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(* substitute "fname ls x rs" by "y" for (x, (_, y)) in subs *) |
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fun subst [] t fs = (t, fs) |
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| subst subs (Abs (a, T, t)) fs = |
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fs |
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|> subst subs t |
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|-> (fn t' => pair (Abs (a, T, t'))) |
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| subst subs (t as (_ $ _)) fs = |
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let |
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val (f, ts) = strip_comb t; |
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in |
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if is_Const f andalso dest_Const f mem map fst rec_eqns then |
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let |
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val fnameT' as (fname', _) = dest_Const f; |
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val (_, rpos, eqns) = the (AList.lookup (op =) rec_eqns fnameT'); |
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val ls = Library.take (rpos, ts); |
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val rest = Library.drop (rpos, ts); |
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val (x', rs) = (hd rest, tl rest) |
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handle Empty => raise RecError ("not enough arguments\ |
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\ in recursive application\nof function " ^ quote fname' ^ " on rhs"); |
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val rs' = (case eqns of |
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(_, (ls', _, rs', _, _)) :: _ => |
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let val (rs1, rs2) = chop (length rs') rs |
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in |
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if ls = map Free ls' andalso rs1 = map Free rs' then rs2 |
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else raise RecError param_err |
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end |
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| _ => raise RecError ("no equations for " ^ quote fname')); |
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val (x, xs) = strip_comb x' |
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in case AList.lookup (op =) subs x |
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of NONE => |
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fs |
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|> fold_map (subst subs) ts |
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|-> (fn ts' => pair (list_comb (f, ts'))) |
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| SOME (i', y) => |
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fs |
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|> fold_map (subst subs) (xs @ rs') |
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||> process_fun thy descr rec_eqns (i', fnameT') |
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130 |
|-> (fn ts' => pair (list_comb (y, ts'))) |
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131 |
end |
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else |
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fs |
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|> fold_map (subst subs) (f :: ts) |
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|-> (fn (f'::ts') => pair (list_comb (f', ts'))) |
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136 |
end |
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|
137 |
| subst _ t fs = (t, fs); |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
138 |
|
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
139 |
(* translate rec equations into function arguments suitable for rec comb *) |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
140 |
|
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
141 |
fun trans eqns (cname, cargs) (fnameTs', fnss', fns) = |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
142 |
(case AList.lookup (op =) eqns cname of |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
143 |
NONE => (warning ("No equation for constructor " ^ quote cname ^ |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
144 |
"\nin definition of function " ^ quote fname); |
28524 | 145 |
(fnameTs', fnss', (Const (@{const_name undefined}, dummyT))::fns)) |
21541
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
146 |
| SOME (ls, cargs', rs, rhs, eq) => |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
147 |
let |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
148 |
val recs = filter (is_rec_type o snd) (cargs' ~~ cargs); |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
149 |
val rargs = map fst recs; |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
150 |
val subs = map (rpair dummyT o fst) |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
151 |
(rev (rename_wrt_term rhs rargs)); |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
152 |
val (rhs', (fnameTs'', fnss'')) = |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
153 |
(subst (map (fn ((x, y), z) => |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
154 |
(Free x, (body_index y, Free z))) |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
155 |
(recs ~~ subs)) rhs (fnameTs', fnss')) |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
156 |
handle RecError s => primrec_eq_err thy s eq |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
157 |
in (fnameTs'', fnss'', |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
158 |
(list_abs_free (cargs' @ subs, rhs'))::fns) |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
159 |
end) |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
160 |
|
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
161 |
in (case AList.lookup (op =) fnameTs i of |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
162 |
NONE => |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
163 |
if exists (equal fnameT o snd) fnameTs then |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
164 |
raise RecError ("inconsistent functions for datatype " ^ quote tname) |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
165 |
else |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
166 |
let |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
167 |
val SOME (_, _, eqns as (_, (ls, _, rs, _, _)) :: _) = |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
168 |
AList.lookup (op =) rec_eqns fnameT; |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
169 |
val (fnameTs', fnss', fns) = fold_rev (trans eqns) constrs |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
170 |
((i, fnameT)::fnameTs, fnss, []) |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
171 |
in |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
172 |
(fnameTs', (i, (fname, ls, rs, fns))::fnss') |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
173 |
end |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
174 |
| SOME fnameT' => |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
175 |
if fnameT = fnameT' then (fnameTs, fnss) |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
176 |
else raise RecError ("inconsistent functions for datatype " ^ quote tname)) |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
177 |
end; |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
178 |
|
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
179 |
|
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
180 |
(* prepare functions needed for definitions *) |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
181 |
|
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
182 |
fun get_fns fns ((i : int, (tname, _, constrs)), rec_name) (fs, defs) = |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
183 |
case AList.lookup (op =) fns i of |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
184 |
NONE => |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
185 |
let |
28524 | 186 |
val dummy_fns = map (fn (_, cargs) => Const (@{const_name undefined}, |
21541
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
187 |
replicate ((length cargs) + (length (List.filter is_rec_type cargs))) |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
188 |
dummyT ---> HOLogic.unitT)) constrs; |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
189 |
val _ = warning ("No function definition for datatype " ^ quote tname) |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
190 |
in |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
191 |
(dummy_fns @ fs, defs) |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
192 |
end |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
193 |
| SOME (fname, ls, rs, fs') => (fs' @ fs, (fname, ls, rs, rec_name, tname) :: defs); |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
194 |
|
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
195 |
|
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
196 |
(* make definition *) |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
197 |
|
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
198 |
fun make_def thy fs (fname, ls, rs, rec_name, tname) = |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
199 |
let |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
200 |
val used = map fst (fold Term.add_frees fs []); |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
201 |
val x = (Name.variant used "x", dummyT); |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
202 |
val frees = ls @ x :: rs; |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
203 |
val rhs = list_abs_free (frees, |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
204 |
list_comb (Const (rec_name, dummyT), fs @ [Free x])) |
22692 | 205 |
val def_name = Sign.base_name fname ^ "_" ^ Sign.base_name tname ^ "_def"; |
206 |
val def_prop as _ $ _ $ t = |
|
24493
d4380e9b287b
replaced ProofContext.infer_types by general Syntax.check_terms;
wenzelm
parents:
23758
diff
changeset
|
207 |
singleton (Syntax.check_terms (ProofContext.init thy)) |
22728 | 208 |
(Logic.mk_equals (Const (fname, dummyT), rhs)); |
22692 | 209 |
in ((def_name, def_prop), subst_bounds (rev (map Free frees), strip_abs_body t)) end; |
21541
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
210 |
|
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
211 |
|
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
212 |
(* find datatypes which contain all datatypes in tnames' *) |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
213 |
|
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
214 |
fun find_dts (dt_info : NominalPackage.nominal_datatype_info Symtab.table) _ [] = [] |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
215 |
| find_dts dt_info tnames' (tname::tnames) = |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
216 |
(case Symtab.lookup dt_info tname of |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
217 |
NONE => primrec_err (quote tname ^ " is not a nominal datatype") |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
218 |
| SOME dt => |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
219 |
if tnames' subset (map (#1 o snd) (#descr dt)) then |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
220 |
(tname, dt)::(find_dts dt_info tnames' tnames) |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
221 |
else find_dts dt_info tnames' tnames); |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
222 |
|
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
223 |
fun common_prefix eq ([], _) = [] |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
224 |
| common_prefix eq (_, []) = [] |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
225 |
| common_prefix eq (x :: xs, y :: ys) = |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
226 |
if eq (x, y) then x :: common_prefix eq (xs, ys) else []; |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
227 |
|
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
228 |
local |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
229 |
|
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
230 |
fun gen_primrec_i note def alt_name invs fctxt eqns_atts thy = |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
231 |
let |
28083
103d9282a946
explicit type Name.binding for higher-specification elements;
wenzelm
parents:
27691
diff
changeset
|
232 |
val (raw_eqns, atts) = split_list eqns_atts; |
29006 | 233 |
val eqns = map (apfst Binding.base_name) raw_eqns; |
21541
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
234 |
val dt_info = NominalPackage.get_nominal_datatypes thy; |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
235 |
val rec_eqns = fold_rev (process_eqn thy o snd) eqns []; |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
236 |
val lsrs :: lsrss = maps (fn (_, (_, _, eqns)) => |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
237 |
map (fn (_, (ls, _, rs, _, _)) => ls @ rs) eqns) rec_eqns |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
238 |
val _ = |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
239 |
(if forall (curry eq_set lsrs) lsrss andalso forall |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
240 |
(fn (_, (_, _, (_, (ls, _, rs, _, _)) :: eqns)) => |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
241 |
forall (fn (_, (ls', _, rs', _, _)) => |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
242 |
ls = ls' andalso rs = rs') eqns |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
243 |
| _ => true) rec_eqns |
22330
00ca68f5ce29
Replaced "raise RecError" by "primrec_err" in function
berghofe
parents:
22101
diff
changeset
|
244 |
then () else primrec_err param_err); |
21541
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
245 |
val tnames = distinct (op =) (map (#1 o snd) rec_eqns); |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
246 |
val dts = find_dts dt_info tnames tnames; |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
247 |
val main_fns = |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
248 |
map (fn (tname, {index, ...}) => |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
249 |
(index, |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
250 |
(fst o the o find_first (fn f => (#1 o snd) f = tname)) rec_eqns)) |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
251 |
dts; |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
252 |
val {descr, rec_names, rec_rewrites, ...} = |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
253 |
if null dts then |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
254 |
primrec_err ("datatypes " ^ commas_quote tnames ^ "\nare not mutually recursive") |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
255 |
else snd (hd dts); |
22434
081a62852313
- Replaced fold by fold_rev to make sure that list of predicate
berghofe
parents:
22330
diff
changeset
|
256 |
val descr = map (fn (i, (tname, args, constrs)) => (i, (tname, args, |
081a62852313
- Replaced fold by fold_rev to make sure that list of predicate
berghofe
parents:
22330
diff
changeset
|
257 |
map (fn (cname, cargs) => (cname, fold (fn (dTs, dT) => fn dTs' => |
081a62852313
- Replaced fold by fold_rev to make sure that list of predicate
berghofe
parents:
22330
diff
changeset
|
258 |
dTs' @ dTs @ [dT]) cargs [])) constrs))) descr; |
21541
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
259 |
val (fnameTs, fnss) = |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
260 |
fold_rev (process_fun thy descr rec_eqns) main_fns ([], []); |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
261 |
val (fs, defs) = fold_rev (get_fns fnss) (descr ~~ rec_names) ([], []); |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
262 |
val defs' = map (make_def thy fs) defs; |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
263 |
val nameTs1 = map snd fnameTs; |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
264 |
val nameTs2 = map fst rec_eqns; |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
265 |
val _ = if gen_eq_set (op =) (nameTs1, nameTs2) then () |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
266 |
else primrec_err ("functions " ^ commas_quote (map fst nameTs2) ^ |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
267 |
"\nare not mutually recursive"); |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
268 |
val primrec_name = |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
269 |
if alt_name = "" then (space_implode "_" (map (Sign.base_name o #1) defs)) else alt_name; |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
270 |
val (defs_thms', thy') = |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
271 |
thy |
24712
64ed05609568
proper Sign operations instead of Theory aliases;
wenzelm
parents:
24707
diff
changeset
|
272 |
|> Sign.add_path primrec_name |
21541
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
273 |
|> fold_map def (map (fn ((name, t), _) => ((name, []), t)) defs'); |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
274 |
val cert = cterm_of thy'; |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
275 |
|
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
276 |
fun mk_idx eq = |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
277 |
let |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
278 |
val Const c = head_of (fst (HOLogic.dest_eq (HOLogic.dest_Trueprop |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
279 |
(Logic.strip_imp_concl eq)))); |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
280 |
val SOME i = AList.lookup op = (map swap fnameTs) c; |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
281 |
val SOME (_, _, constrs) = AList.lookup op = descr i; |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
282 |
val SOME (_, _, eqns) = AList.lookup op = rec_eqns c; |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
283 |
val SOME (cname, (_, cargs, _, _, _)) = find_first |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
284 |
(fn (_, (_, _, _, _, eq')) => eq = eq') eqns |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
285 |
in (i, find_index (fn (cname', _) => cname = cname') constrs, cargs) end; |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
286 |
|
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
287 |
val rec_rewritess = |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
288 |
unflat (map (fn (_, (_, _, constrs)) => constrs) descr) rec_rewrites; |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
289 |
val fvars = rec_rewrites |> hd |> concl_of |> HOLogic.dest_Trueprop |> |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
290 |
HOLogic.dest_eq |> fst |> strip_comb |> snd |> take_prefix is_Var |> fst; |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
291 |
val (pvars, ctxtvars) = List.partition |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
292 |
(equal HOLogic.boolT o body_type o snd) |
22434
081a62852313
- Replaced fold by fold_rev to make sure that list of predicate
berghofe
parents:
22330
diff
changeset
|
293 |
(fold_rev Term.add_vars (map Logic.strip_assums_concl |
21541
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
294 |
(prems_of (hd rec_rewrites))) [] \\ map dest_Var fvars); |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
295 |
val cfs = defs' |> hd |> snd |> strip_comb |> snd |> |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
296 |
curry (List.take o swap) (length fvars) |> map cert; |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
297 |
val invs' = (case invs of |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
298 |
NONE => map (fn (i, _) => |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
299 |
let |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
300 |
val SOME (_, T) = AList.lookup op = fnameTs i |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
301 |
val (Ts, U) = strip_type T |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
302 |
in |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
303 |
Abs ("x", List.drop (Ts, length lsrs + 1) ---> U, HOLogic.true_const) |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
304 |
end) descr |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
305 |
| SOME invs' => invs'); |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
306 |
val inst = (map cert fvars ~~ cfs) @ |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
307 |
(map (cert o Var) pvars ~~ map cert invs') @ |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
308 |
(case ctxtvars of |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
309 |
[ctxtvar] => [(cert (Var ctxtvar), cert (the_default HOLogic.unit fctxt))] |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
310 |
| _ => []); |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
311 |
val rec_rewrites' = map (fn (_, eq) => |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
312 |
let |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
313 |
val (i, j, cargs) = mk_idx eq |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
314 |
val th = nth (nth rec_rewritess i) j; |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
315 |
val cargs' = th |> concl_of |> HOLogic.dest_Trueprop |> |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
316 |
HOLogic.dest_eq |> fst |> strip_comb |> snd |> split_last |> snd |> |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
317 |
strip_comb |> snd |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
318 |
in (cargs, Logic.strip_imp_prems eq, |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
319 |
Drule.cterm_instantiate (inst @ |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
320 |
(map (cterm_of thy') cargs' ~~ map (cterm_of thy' o Free) cargs)) th) |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
321 |
end) eqns; |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
322 |
|
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
323 |
val prems = foldr1 (common_prefix op aconv) (map (prems_of o #3) rec_rewrites'); |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
324 |
val cprems = map cert prems; |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
325 |
val asms = map Thm.assume cprems; |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
326 |
val premss = map (fn (cargs, eprems, eqn) => |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
327 |
map (fn t => list_all_free (cargs, Logic.list_implies (eprems, t))) |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
328 |
(List.drop (prems_of eqn, length prems))) rec_rewrites'; |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
329 |
val cpremss = map (map cert) premss; |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
330 |
val asmss = map (map Thm.assume) cpremss; |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
331 |
|
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
332 |
fun mk_eqn ((cargs, eprems, eqn), asms') = |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
333 |
let |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
334 |
val ceprems = map cert eprems; |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
335 |
val asms'' = map Thm.assume ceprems; |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
336 |
val ccargs = map (cert o Free) cargs; |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
337 |
val asms''' = map (fn th => implies_elim_list |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
338 |
(forall_elim_list ccargs th) asms'') asms' |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
339 |
in |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
340 |
implies_elim_list eqn (asms @ asms''') |> |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
341 |
implies_intr_list ceprems |> |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
342 |
forall_intr_list ccargs |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
343 |
end; |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
344 |
|
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
345 |
val rule_prems = cprems @ flat cpremss; |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
346 |
val rule = implies_intr_list rule_prems |
23418 | 347 |
(Conjunction.intr_balanced (map mk_eqn (rec_rewrites' ~~ asmss))); |
21541
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
348 |
|
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
349 |
val goals = map (fn ((cargs, _, _), (_, eqn)) => |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
350 |
(list_all_free (cargs, eqn), [])) (rec_rewrites' ~~ eqns); |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
351 |
|
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
352 |
in |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
353 |
thy' |> |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
354 |
ProofContext.init |> |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
355 |
Proof.theorem_i NONE |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
356 |
(fn thss => ProofContext.theory (fn thy => |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
357 |
let |
21618 | 358 |
val simps = map standard (flat thss); |
21541
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
359 |
val (simps', thy') = |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
360 |
fold_map note ((map fst eqns ~~ atts) ~~ map single simps) thy; |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
361 |
val simps'' = maps snd simps' |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
362 |
in |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
363 |
thy' |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
364 |
|> note (("simps", [Simplifier.simp_add]), simps'') |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
365 |
|> snd |
24712
64ed05609568
proper Sign operations instead of Theory aliases;
wenzelm
parents:
24707
diff
changeset
|
366 |
|> Sign.parent_path |
21541
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
367 |
end)) |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
368 |
[goals] |> |
23351 | 369 |
Proof.apply (Method.Basic (fn _ => Method.RAW_METHOD (fn _ => |
21541
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
370 |
rewrite_goals_tac (map snd defs_thms') THEN |
23351 | 371 |
compose_tac (false, rule, length rule_prems) 1), Position.none)) |> |
21541
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
372 |
Seq.hd |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
373 |
end; |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
374 |
|
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
375 |
fun gen_primrec note def alt_name invs fctxt eqns thy = |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
376 |
let |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
377 |
val ((names, strings), srcss) = apfst split_list (split_list eqns); |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
378 |
val atts = map (map (Attrib.attribute thy)) srcss; |
24707 | 379 |
val eqn_ts = map (fn s => Syntax.read_prop_global thy s |
21541
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
380 |
handle ERROR msg => cat_error msg ("The error(s) above occurred for " ^ s)) strings; |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
381 |
val rec_ts = map (fn eq => head_of (fst (HOLogic.dest_eq |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
382 |
(HOLogic.dest_Trueprop (Logic.strip_imp_concl eq)))) |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
383 |
handle TERM _ => primrec_eq_err thy "not a proper equation" eq) eqn_ts; |
25557 | 384 |
val (_, eqn_ts') = OldPrimrecPackage.unify_consts thy rec_ts eqn_ts |
21541
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
385 |
in |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
386 |
gen_primrec_i note def alt_name |
24707 | 387 |
(Option.map (map (Syntax.read_term_global thy)) invs) |
388 |
(Option.map (Syntax.read_term_global thy) fctxt) |
|
21541
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
389 |
(names ~~ eqn_ts' ~~ atts) thy |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
390 |
end; |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
391 |
|
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
392 |
fun thy_note ((name, atts), thms) = |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
393 |
PureThy.add_thmss [((name, thms), atts)] #-> (fn [thms] => pair (name, thms)); |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
394 |
fun thy_def false ((name, atts), t) = |
27691
ce171cbd4b93
PureThy: dropped note_thmss_qualified, dropped _i suffix
haftmann
parents:
26939
diff
changeset
|
395 |
PureThy.add_defs false [((name, t), atts)] #-> (fn [thm] => pair (name, thm)) |
21541
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
396 |
| thy_def true ((name, atts), t) = |
27691
ce171cbd4b93
PureThy: dropped note_thmss_qualified, dropped _i suffix
haftmann
parents:
26939
diff
changeset
|
397 |
PureThy.add_defs_unchecked false [((name, t), atts)] #-> (fn [thm] => pair (name, thm)); |
21541
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
398 |
|
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
399 |
in |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
400 |
|
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
401 |
val add_primrec = gen_primrec thy_note (thy_def false); |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
402 |
val add_primrec_unchecked = gen_primrec thy_note (thy_def true); |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
403 |
val add_primrec_i = gen_primrec_i thy_note (thy_def false); |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
404 |
val add_primrec_unchecked_i = gen_primrec_i thy_note (thy_def true); |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
405 |
|
ea881fbe0489
Implemented new "nominal_primrec" command for defining
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parents:
diff
changeset
|
406 |
end; (*local*) |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
407 |
|
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
408 |
|
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
409 |
(* outer syntax *) |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
410 |
|
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
411 |
local structure P = OuterParse and K = OuterKeyword in |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
412 |
|
24906
557a9cd9370c
turned keywords invariant/freshness_context into reserved indentifiers;
wenzelm
parents:
24867
diff
changeset
|
413 |
val freshness_context = P.reserved "freshness_context"; |
557a9cd9370c
turned keywords invariant/freshness_context into reserved indentifiers;
wenzelm
parents:
24867
diff
changeset
|
414 |
val invariant = P.reserved "invariant"; |
24867 | 415 |
|
24906
557a9cd9370c
turned keywords invariant/freshness_context into reserved indentifiers;
wenzelm
parents:
24867
diff
changeset
|
416 |
fun unless_flag scan = Scan.unless ((freshness_context || invariant) -- P.$$$ ":") scan; |
557a9cd9370c
turned keywords invariant/freshness_context into reserved indentifiers;
wenzelm
parents:
24867
diff
changeset
|
417 |
|
557a9cd9370c
turned keywords invariant/freshness_context into reserved indentifiers;
wenzelm
parents:
24867
diff
changeset
|
418 |
val parser1 = (freshness_context -- P.$$$ ":") |-- unless_flag P.term >> SOME; |
557a9cd9370c
turned keywords invariant/freshness_context into reserved indentifiers;
wenzelm
parents:
24867
diff
changeset
|
419 |
val parser2 = (invariant -- P.$$$ ":") |-- |
557a9cd9370c
turned keywords invariant/freshness_context into reserved indentifiers;
wenzelm
parents:
24867
diff
changeset
|
420 |
(Scan.repeat1 (unless_flag P.term) >> SOME) -- Scan.optional parser1 NONE || |
21541
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
421 |
(parser1 >> pair NONE); |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
422 |
val parser3 = |
24906
557a9cd9370c
turned keywords invariant/freshness_context into reserved indentifiers;
wenzelm
parents:
24867
diff
changeset
|
423 |
unless_flag P.name -- Scan.optional parser2 (NONE, NONE) || |
21541
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
424 |
(parser2 >> pair ""); |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
425 |
val parser4 = |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
426 |
(P.$$$ "unchecked" >> K true) -- Scan.optional parser3 ("", (NONE, NONE)) || |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
427 |
(parser3 >> pair false); |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
428 |
val options = |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
429 |
Scan.optional (P.$$$ "(" |-- P.!!! |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
430 |
(parser4 --| P.$$$ ")")) (false, ("", (NONE, NONE))); |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
431 |
|
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
432 |
val primrec_decl = |
22101 | 433 |
options -- Scan.repeat1 (SpecParse.opt_thm_name ":" -- P.prop); |
21541
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
434 |
|
24867 | 435 |
val _ = |
21541
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
436 |
OuterSyntax.command "nominal_primrec" "define primitive recursive functions on nominal datatypes" K.thy_goal |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
437 |
(primrec_decl >> (fn ((unchecked, (alt_name, (invs, fctxt))), eqns) => |
21767 | 438 |
Toplevel.print o Toplevel.theory_to_proof |
21541
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
439 |
((if unchecked then add_primrec_unchecked else add_primrec) alt_name invs fctxt |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
440 |
(map P.triple_swap eqns)))); |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
441 |
|
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
442 |
end; |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
443 |
|
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
444 |
|
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
445 |
end; |
ea881fbe0489
Implemented new "nominal_primrec" command for defining
berghofe
parents:
diff
changeset
|
446 |