author | wenzelm |
Tue, 20 Oct 2009 10:46:42 +0200 | |
changeset 33009 | 6b15c94e4871 |
parent 33007 | 94108ea8c568 |
parent 33002 | f3f02f36a3e2 |
child 33035 | 15eab423e573 |
permissions | -rw-r--r-- |
24589 | 1 |
(* Title: HOL/Tools/datatype_codegen.ML |
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2 |
Author: Stefan Berghofer and Florian Haftmann, TU Muenchen |
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Code generator facilities for inductive datatypes. |
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*) |
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||
7 |
signature DATATYPE_CODEGEN = |
|
8 |
sig |
|
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val find_shortest_path: Datatype.descr -> int -> (string * int) option |
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val setup: theory -> theory |
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end; |
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||
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structure DatatypeCodegen : DATATYPE_CODEGEN = |
|
14 |
struct |
|
15 |
||
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(** find shortest path to constructor with no recursive arguments **) |
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|
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fun find_nonempty (descr: Datatype.descr) is i = |
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let |
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val (_, _, constrs) = the (AList.lookup (op =) descr i); |
21 |
fun arg_nonempty (_, DatatypeAux.DtRec i) = if member (op =) is i |
|
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then NONE |
|
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else Option.map (Integer.add 1 o snd) (find_nonempty descr (i::is) i) |
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| arg_nonempty _ = SOME 0; |
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fun max xs = Library.foldl |
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(fn (NONE, _) => NONE |
27 |
| (SOME i, SOME j) => SOME (Int.max (i, j)) |
|
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| (_, NONE) => NONE) (SOME 0, xs); |
|
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val xs = sort (int_ord o pairself snd) |
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(map_filter (fn (s, dts) => Option.map (pair s) |
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(max (map (arg_nonempty o DatatypeAux.strip_dtyp) dts))) constrs) |
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in case xs of [] => NONE | x :: _ => SOME x end; |
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|
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fun find_shortest_path descr i = find_nonempty descr [i] i; |
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||
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|
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(** SML code generator **) |
|
38 |
||
39 |
open Codegen; |
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||
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(* datatype definition *) |
|
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||
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fun add_dt_defs thy defs dep module (descr: Datatype.descr) sorts gr = |
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let |
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val descr' = List.filter (can (map DatatypeAux.dest_DtTFree o #2 o snd)) descr; |
46 |
val rtnames = map (#1 o snd) (List.filter (fn (_, (_, _, cs)) => |
|
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exists (exists DatatypeAux.is_rec_type o snd) cs) descr'); |
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|
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val (_, (tname, _, _)) :: _ = descr'; |
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val node_id = tname ^ " (type)"; |
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val module' = if_library (thyname_of_type thy tname) module; |
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|
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fun mk_dtdef prfx [] gr = ([], gr) |
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| mk_dtdef prfx ((_, (tname, dts, cs))::xs) gr = |
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let |
56 |
val tvs = map DatatypeAux.dest_DtTFree dts; |
|
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val cs' = map (apsnd (map (DatatypeAux.typ_of_dtyp descr sorts))) cs; |
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val ((_, type_id), gr') = mk_type_id module' tname gr; |
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val (ps, gr'') = gr' |> |
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fold_map (fn (cname, cargs) => |
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fold_map (invoke_tycodegen thy defs node_id module' false) |
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cargs ##>> |
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mk_const_id module' cname) cs'; |
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val (rest, gr''') = mk_dtdef "and " xs gr'' |
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in |
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(Pretty.block (str prfx :: |
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(if null tvs then [] else |
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[mk_tuple (map str tvs), str " "]) @ |
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[str (type_id ^ " ="), Pretty.brk 1] @ |
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flat (separate [Pretty.brk 1, str "| "] |
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(map (fn (ps', (_, cname)) => [Pretty.block |
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(str cname :: |
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(if null ps' then [] else |
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flat ([str " of", Pretty.brk 1] :: |
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separate [str " *", Pretty.brk 1] |
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(map single ps'))))]) ps))) :: rest, gr''') |
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end; |
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|
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fun mk_constr_term cname Ts T ps = |
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flat (separate [str " $", Pretty.brk 1] |
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([str ("Const (\"" ^ cname ^ "\","), Pretty.brk 1, |
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mk_type false (Ts ---> T), str ")"] :: ps)); |
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fun mk_term_of_def gr prfx [] = [] |
85 |
| mk_term_of_def gr prfx ((_, (tname, dts, cs)) :: xs) = |
|
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let |
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val cs' = map (apsnd (map (DatatypeAux.typ_of_dtyp descr sorts))) cs; |
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val dts' = map (DatatypeAux.typ_of_dtyp descr sorts) dts; |
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val T = Type (tname, dts'); |
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val rest = mk_term_of_def gr "and " xs; |
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val (eqs, _) = fold_map (fn (cname, Ts) => fn prfx => |
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let val args = map (fn i => |
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str ("x" ^ string_of_int i)) (1 upto length Ts) |
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in (Pretty.blk (4, |
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[str prfx, mk_term_of gr module' false T, Pretty.brk 1, |
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if null Ts then str (snd (get_const_id gr cname)) |
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else parens (Pretty.block |
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[str (snd (get_const_id gr cname)), |
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Pretty.brk 1, mk_tuple args]), |
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str " =", Pretty.brk 1] @ |
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mk_constr_term cname Ts T |
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(map2 (fn x => fn U => [Pretty.block [mk_term_of gr module' false U, |
103 |
Pretty.brk 1, x]]) args Ts)), " | ") |
|
104 |
end) cs' prfx |
|
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in eqs @ rest end; |
106 |
||
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fun mk_gen_of_def gr prfx [] = [] |
108 |
| mk_gen_of_def gr prfx ((i, (tname, dts, cs)) :: xs) = |
|
14104 | 109 |
let |
110 |
val tvs = map DatatypeAux.dest_DtTFree dts; |
|
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val Us = map (DatatypeAux.typ_of_dtyp descr sorts) dts; |
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val T = Type (tname, Us); |
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val (cs1, cs2) = |
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List.partition (exists DatatypeAux.is_rec_type o snd) cs; |
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val SOME (cname, _) = find_shortest_path descr i; |
14104 | 116 |
|
117 |
fun mk_delay p = Pretty.block |
|
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[str "fn () =>", Pretty.brk 1, p]; |
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|
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fun mk_force p = Pretty.block [p, Pretty.brk 1, str "()"]; |
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|
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fun mk_constr s b (cname, dts) = |
14104 | 123 |
let |
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val gs = map (fn dt => mk_app false (mk_gen gr module' false rtnames s |
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(DatatypeAux.typ_of_dtyp descr sorts dt)) |
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[str (if b andalso DatatypeAux.is_rec_type dt then "0" |
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127 |
else "j")]) dts; |
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val Ts = map (DatatypeAux.typ_of_dtyp descr sorts) dts; |
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val xs = map str |
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(DatatypeProp.indexify_names (replicate (length dts) "x")); |
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val ts = map str |
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(DatatypeProp.indexify_names (replicate (length dts) "t")); |
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val (_, id) = get_const_id gr cname |
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134 |
in |
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135 |
mk_let |
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136 |
(map2 (fn p => fn q => mk_tuple [p, q]) xs ts ~~ gs) |
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(mk_tuple |
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138 |
[case xs of |
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139 |
_ :: _ :: _ => Pretty.block |
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[str id, Pretty.brk 1, mk_tuple xs] |
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141 |
| _ => mk_app false (str id) xs, |
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142 |
mk_delay (Pretty.block (mk_constr_term cname Ts T |
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143 |
(map (single o mk_force) ts)))]) |
14104 | 144 |
end; |
145 |
||
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146 |
fun mk_choice [c] = mk_constr "(i-1)" false c |
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147 |
| mk_choice cs = Pretty.block [str "one_of", |
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148 |
Pretty.brk 1, Pretty.blk (1, str "[" :: |
32952 | 149 |
flat (separate [str ",", Pretty.fbrk] |
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Fixed bug in mk_gen_of_def that could cause non-termination of the generator
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150 |
(map (single o mk_delay o mk_constr "(i-1)" false) cs)) @ |
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151 |
[str "]"]), Pretty.brk 1, str "()"]; |
14104 | 152 |
|
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153 |
val gs = maps (fn s => |
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154 |
let val s' = strip_tname s |
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|
155 |
in [str (s' ^ "G"), str (s' ^ "T")] end) tvs; |
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156 |
val gen_name = "gen_" ^ snd (get_type_id gr tname) |
14104 | 157 |
|
158 |
in |
|
159 |
Pretty.blk (4, separate (Pretty.brk 1) |
|
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|
160 |
(str (prfx ^ gen_name ^ |
14104 | 161 |
(if null cs1 then "" else "'")) :: gs @ |
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162 |
(if null cs1 then [] else [str "i"]) @ |
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163 |
[str "j"]) @ |
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|
164 |
[str " =", Pretty.brk 1] @ |
14104 | 165 |
(if not (null cs1) andalso not (null cs2) |
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166 |
then [str "frequency", Pretty.brk 1, |
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|
167 |
Pretty.blk (1, [str "[", |
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168 |
mk_tuple [str "i", mk_delay (mk_choice cs1)], |
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169 |
str ",", Pretty.fbrk, |
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|
170 |
mk_tuple [str "1", mk_delay (mk_choice cs2)], |
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|
171 |
str "]"]), Pretty.brk 1, str "()"] |
14104 | 172 |
else if null cs2 then |
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173 |
[Pretty.block [str "(case", Pretty.brk 1, |
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174 |
str "i", Pretty.brk 1, str "of", |
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175 |
Pretty.brk 1, str "0 =>", Pretty.brk 1, |
17521 | 176 |
mk_constr "0" true (cname, valOf (AList.lookup (op =) cs cname)), |
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177 |
Pretty.brk 1, str "| _ =>", Pretty.brk 1, |
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|
178 |
mk_choice cs1, str ")"]] |
14104 | 179 |
else [mk_choice cs2])) :: |
180 |
(if null cs1 then [] |
|
181 |
else [Pretty.blk (4, separate (Pretty.brk 1) |
|
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|
182 |
(str ("and " ^ gen_name) :: gs @ [str "i"]) @ |
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|
183 |
[str " =", Pretty.brk 1] @ |
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|
184 |
separate (Pretty.brk 1) (str (gen_name ^ "'") :: gs @ |
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|
185 |
[str "i", str "i"]))]) @ |
17144 | 186 |
mk_gen_of_def gr "and " xs |
14104 | 187 |
end |
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|
188 |
|
12445 | 189 |
in |
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190 |
(module', (add_edge_acyclic (node_id, dep) gr |
12445 | 191 |
handle Graph.CYCLES _ => gr) handle Graph.UNDEF _ => |
192 |
let |
|
17144 | 193 |
val gr1 = add_edge (node_id, dep) |
194 |
(new_node (node_id, (NONE, "", "")) gr); |
|
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|
195 |
val (dtdef, gr2) = mk_dtdef "datatype " descr' gr1 ; |
12445 | 196 |
in |
17144 | 197 |
map_node node_id (K (NONE, module', |
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|
198 |
string_of (Pretty.blk (0, separate Pretty.fbrk dtdef @ |
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|
199 |
[str ";"])) ^ "\n\n" ^ |
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|
200 |
(if "term_of" mem !mode then |
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|
201 |
string_of (Pretty.blk (0, separate Pretty.fbrk |
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|
202 |
(mk_term_of_def gr2 "fun " descr') @ [str ";"])) ^ "\n\n" |
14104 | 203 |
else "") ^ |
204 |
(if "test" mem !mode then |
|
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|
205 |
string_of (Pretty.blk (0, separate Pretty.fbrk |
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|
206 |
(mk_gen_of_def gr2 "fun " descr') @ [str ";"])) ^ "\n\n" |
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|
207 |
else ""))) gr2 |
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208 |
end) |
12445 | 209 |
end; |
210 |
||
211 |
||
31625 | 212 |
(* case expressions *) |
12445 | 213 |
|
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214 |
fun pretty_case thy defs dep module brack constrs (c as Const (_, T)) ts gr = |
12445 | 215 |
let val i = length constrs |
216 |
in if length ts <= i then |
|
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|
217 |
invoke_codegen thy defs dep module brack (eta_expand c ts (i+1)) gr |
12445 | 218 |
else |
219 |
let |
|
15570 | 220 |
val ts1 = Library.take (i, ts); |
221 |
val t :: ts2 = Library.drop (i, ts); |
|
30190 | 222 |
val names = List.foldr OldTerm.add_term_names |
223 |
(map (fst o fst o dest_Var) (List.foldr OldTerm.add_term_vars [] ts1)) ts1; |
|
15570 | 224 |
val (Ts, dT) = split_last (Library.take (i+1, fst (strip_type T))); |
12445 | 225 |
|
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226 |
fun pcase [] [] [] gr = ([], gr) |
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|
227 |
| pcase ((cname, cargs)::cs) (t::ts) (U::Us) gr = |
12445 | 228 |
let |
229 |
val j = length cargs; |
|
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|
230 |
val xs = Name.variant_list names (replicate j "x"); |
15570 | 231 |
val Us' = Library.take (j, fst (strip_type U)); |
12445 | 232 |
val frees = map Free (xs ~~ Us'); |
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|
233 |
val (cp, gr0) = invoke_codegen thy defs dep module false |
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|
234 |
(list_comb (Const (cname, Us' ---> dT), frees)) gr; |
12445 | 235 |
val t' = Envir.beta_norm (list_comb (t, frees)); |
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|
236 |
val (p, gr1) = invoke_codegen thy defs dep module false t' gr0; |
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|
237 |
val (ps, gr2) = pcase cs ts Us gr1; |
12445 | 238 |
in |
26975
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changeset
|
239 |
([Pretty.block [cp, str " =>", Pretty.brk 1, p]] :: ps, gr2) |
12445 | 240 |
end; |
241 |
||
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|
242 |
val (ps1, gr1) = pcase constrs ts1 Ts gr ; |
32952 | 243 |
val ps = flat (separate [Pretty.brk 1, str "| "] ps1); |
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|
244 |
val (p, gr2) = invoke_codegen thy defs dep module false t gr1; |
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|
245 |
val (ps2, gr3) = fold_map (invoke_codegen thy defs dep module true) ts2 gr2; |
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|
246 |
in ((if not (null ts2) andalso brack then parens else I) |
12445 | 247 |
(Pretty.block (separate (Pretty.brk 1) |
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|
248 |
(Pretty.block ([str "(case ", p, str " of", |
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changeset
|
249 |
Pretty.brk 1] @ ps @ [str ")"]) :: ps2))), gr3) |
12445 | 250 |
end |
251 |
end; |
|
252 |
||
253 |
||
31625 | 254 |
(* constructors *) |
12445 | 255 |
|
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|
256 |
fun pretty_constr thy defs dep module brack args (c as Const (s, T)) ts gr = |
12445 | 257 |
let val i = length args |
258 |
in if i > 1 andalso length ts < i then |
|
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changeset
|
259 |
invoke_codegen thy defs dep module brack (eta_expand c ts i) gr |
12445 | 260 |
else |
261 |
let |
|
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|
262 |
val id = mk_qual_id module (get_const_id gr s); |
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|
263 |
val (ps, gr') = fold_map |
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changeset
|
264 |
(invoke_codegen thy defs dep module (i = 1)) ts gr; |
12445 | 265 |
in (case args of |
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|
266 |
_ :: _ :: _ => (if brack then parens else I) |
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|
267 |
(Pretty.block [str id, Pretty.brk 1, mk_tuple ps]) |
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|
268 |
| _ => (mk_app brack (str id) ps), gr') |
12445 | 269 |
end |
270 |
end; |
|
271 |
||
272 |
||
31625 | 273 |
(* code generators for terms and types *) |
12445 | 274 |
|
28537
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|
275 |
fun datatype_codegen thy defs dep module brack t gr = (case strip_comb t of |
12445 | 276 |
(c as Const (s, T), ts) => |
31784 | 277 |
(case Datatype.info_of_case thy s of |
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a5b87573f427
Streamlined datatype_codegen function using new datatype_of_case
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changeset
|
278 |
SOME {index, descr, ...} => |
22921
475ff421a6a3
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diff
changeset
|
279 |
if is_some (get_assoc_code thy (s, T)) then NONE else |
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changeset
|
280 |
SOME (pretty_case thy defs dep module brack |
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changeset
|
281 |
(#3 (the (AList.lookup op = descr index))) c ts gr ) |
32896
99cd75a18b78
lookup for datatype constructors considers type annotations to resolve overloading
haftmann
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diff
changeset
|
282 |
| NONE => case (Datatype.info_of_constr thy (s, T), strip_type T) of |
28639
9788fb18a142
datatype_codegen now checks name of result type of constructor
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parents:
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diff
changeset
|
283 |
(SOME {index, descr, ...}, (_, U as Type (tyname, _))) => |
22921
475ff421a6a3
consts in consts_code Isar commands are now referred to by usual term syntax
haftmann
parents:
22778
diff
changeset
|
284 |
if is_some (get_assoc_code thy (s, T)) then NONE else |
28639
9788fb18a142
datatype_codegen now checks name of result type of constructor
berghofe
parents:
28537
diff
changeset
|
285 |
let |
9788fb18a142
datatype_codegen now checks name of result type of constructor
berghofe
parents:
28537
diff
changeset
|
286 |
val SOME (tyname', _, constrs) = AList.lookup op = descr index; |
9788fb18a142
datatype_codegen now checks name of result type of constructor
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parents:
28537
diff
changeset
|
287 |
val SOME args = AList.lookup op = constrs s |
22778
a5b87573f427
Streamlined datatype_codegen function using new datatype_of_case
berghofe
parents:
22746
diff
changeset
|
288 |
in |
28639
9788fb18a142
datatype_codegen now checks name of result type of constructor
berghofe
parents:
28537
diff
changeset
|
289 |
if tyname <> tyname' then NONE |
9788fb18a142
datatype_codegen now checks name of result type of constructor
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parents:
28537
diff
changeset
|
290 |
else SOME (pretty_constr thy defs |
28537
1e84256d1a8a
established canonical argument order in SML code generators
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parents:
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diff
changeset
|
291 |
dep module brack args c ts (snd (invoke_tycodegen thy defs dep module false U gr))) |
22778
a5b87573f427
Streamlined datatype_codegen function using new datatype_of_case
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parents:
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changeset
|
292 |
end |
a5b87573f427
Streamlined datatype_codegen function using new datatype_of_case
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parents:
22746
diff
changeset
|
293 |
| _ => NONE) |
a5b87573f427
Streamlined datatype_codegen function using new datatype_of_case
berghofe
parents:
22746
diff
changeset
|
294 |
| _ => NONE); |
12445 | 295 |
|
28537
1e84256d1a8a
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parents:
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diff
changeset
|
296 |
fun datatype_tycodegen thy defs dep module brack (Type (s, Ts)) gr = |
31784 | 297 |
(case Datatype.get_info thy s of |
15531 | 298 |
NONE => NONE |
25889
c93803252748
Test data generation and conversion to terms is now more closely
berghofe
parents:
25864
diff
changeset
|
299 |
| SOME {descr, sorts, ...} => |
22921
475ff421a6a3
consts in consts_code Isar commands are now referred to by usual term syntax
haftmann
parents:
22778
diff
changeset
|
300 |
if is_some (get_assoc_type thy s) then NONE else |
16645 | 301 |
let |
28537
1e84256d1a8a
established canonical argument order in SML code generators
haftmann
parents:
28423
diff
changeset
|
302 |
val (ps, gr') = fold_map |
1e84256d1a8a
established canonical argument order in SML code generators
haftmann
parents:
28423
diff
changeset
|
303 |
(invoke_tycodegen thy defs dep module false) Ts gr; |
1e84256d1a8a
established canonical argument order in SML code generators
haftmann
parents:
28423
diff
changeset
|
304 |
val (module', gr'') = add_dt_defs thy defs dep module descr sorts gr' ; |
1e84256d1a8a
established canonical argument order in SML code generators
haftmann
parents:
28423
diff
changeset
|
305 |
val (tyid, gr''') = mk_type_id module' s gr'' |
1e84256d1a8a
established canonical argument order in SML code generators
haftmann
parents:
28423
diff
changeset
|
306 |
in SOME (Pretty.block ((if null Ts then [] else |
26975
103dca19ef2e
Replaced Pretty.str and Pretty.string_of by specific functions (from Codegen) that
berghofe
parents:
26732
diff
changeset
|
307 |
[mk_tuple ps, str " "]) @ |
28537
1e84256d1a8a
established canonical argument order in SML code generators
haftmann
parents:
28423
diff
changeset
|
308 |
[str (mk_qual_id module tyid)]), gr''') |
12445 | 309 |
end) |
16645 | 310 |
| datatype_tycodegen _ _ _ _ _ _ _ = NONE; |
12445 | 311 |
|
18247
b17724cae935
code generator: case expressions, improved name resolving
haftmann
parents:
18220
diff
changeset
|
312 |
|
25534
d0b74fdd6067
simplified infrastructure for code generator operational equality
haftmann
parents:
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diff
changeset
|
313 |
(** generic code generator **) |
20105 | 314 |
|
31625 | 315 |
(* liberal addition of code data for datatypes *) |
316 |
||
317 |
fun mk_constr_consts thy vs dtco cos = |
|
318 |
let |
|
319 |
val cs = map (fn (c, tys) => (c, tys ---> Type (dtco, map TFree vs))) cos; |
|
320 |
val cs' = map (fn c_ty as (_, ty) => (AxClass.unoverload_const thy c_ty, ty)) cs; |
|
321 |
in if is_some (try (Code.constrset_of_consts thy) cs') |
|
322 |
then SOME cs |
|
323 |
else NONE |
|
324 |
end; |
|
325 |
||
326 |
||
25534
d0b74fdd6067
simplified infrastructure for code generator operational equality
haftmann
parents:
25505
diff
changeset
|
327 |
(* case certificates *) |
19346 | 328 |
|
30076 | 329 |
fun mk_case_cert thy tyco = |
23811 | 330 |
let |
331 |
val raw_thms = |
|
31784 | 332 |
(#case_rewrites o Datatype.the_info thy) tyco; |
23811 | 333 |
val thms as hd_thm :: _ = raw_thms |
334 |
|> Conjunction.intr_balanced |
|
24976
821628d16552
moved Drule.unvarify to Thm.unvarify (cf. more_thm.ML);
wenzelm
parents:
24845
diff
changeset
|
335 |
|> Thm.unvarify |
23811 | 336 |
|> Conjunction.elim_balanced (length raw_thms) |
337 |
|> map Simpdata.mk_meta_eq |
|
338 |
|> map Drule.zero_var_indexes |
|
339 |
val params = fold_aterms (fn (Free (v, _)) => insert (op =) v |
|
340 |
| _ => I) (Thm.prop_of hd_thm) []; |
|
341 |
val rhs = hd_thm |
|
342 |
|> Thm.prop_of |
|
343 |
|> Logic.dest_equals |
|
344 |
|> fst |
|
345 |
|> Term.strip_comb |
|
346 |
|> apsnd (fst o split_last) |
|
347 |
|> list_comb; |
|
348 |
val lhs = Free (Name.variant params "case", Term.fastype_of rhs); |
|
349 |
val asm = (Thm.cterm_of thy o Logic.mk_equals) (lhs, rhs); |
|
350 |
in |
|
351 |
thms |
|
352 |
|> Conjunction.intr_balanced |
|
353 |
|> MetaSimplifier.rewrite_rule [(Thm.symmetric o Thm.assume) asm] |
|
354 |
|> Thm.implies_intr asm |
|
355 |
|> Thm.generalize ([], params) 0 |
|
25597
34860182b250
moved instance parameter management from class.ML to axclass.ML
haftmann
parents:
25569
diff
changeset
|
356 |
|> AxClass.unoverload thy |
23811 | 357 |
|> Thm.varifyT |
358 |
end; |
|
359 |
||
25534
d0b74fdd6067
simplified infrastructure for code generator operational equality
haftmann
parents:
25505
diff
changeset
|
360 |
|
d0b74fdd6067
simplified infrastructure for code generator operational equality
haftmann
parents:
25505
diff
changeset
|
361 |
(* equality *) |
d0b74fdd6067
simplified infrastructure for code generator operational equality
haftmann
parents:
25505
diff
changeset
|
362 |
|
31134
1a5591ecb764
tuned and generalized construction of code equations for eq
haftmann
parents:
30242
diff
changeset
|
363 |
fun mk_eq_eqns thy dtco = |
25534
d0b74fdd6067
simplified infrastructure for code generator operational equality
haftmann
parents:
25505
diff
changeset
|
364 |
let |
31784 | 365 |
val (vs, cos) = Datatype.the_spec thy dtco; |
32902 | 366 |
val { descr, index, inject = inject_thms, distinct = distinct_thms, ... } = |
367 |
Datatype.the_info thy dtco; |
|
31134
1a5591ecb764
tuned and generalized construction of code equations for eq
haftmann
parents:
30242
diff
changeset
|
368 |
val ty = Type (dtco, map TFree vs); |
1a5591ecb764
tuned and generalized construction of code equations for eq
haftmann
parents:
30242
diff
changeset
|
369 |
fun mk_eq (t1, t2) = Const (@{const_name eq_class.eq}, ty --> ty --> HOLogic.boolT) |
1a5591ecb764
tuned and generalized construction of code equations for eq
haftmann
parents:
30242
diff
changeset
|
370 |
$ t1 $ t2; |
1a5591ecb764
tuned and generalized construction of code equations for eq
haftmann
parents:
30242
diff
changeset
|
371 |
fun true_eq t12 = HOLogic.mk_eq (mk_eq t12, HOLogic.true_const); |
1a5591ecb764
tuned and generalized construction of code equations for eq
haftmann
parents:
30242
diff
changeset
|
372 |
fun false_eq t12 = HOLogic.mk_eq (mk_eq t12, HOLogic.false_const); |
1a5591ecb764
tuned and generalized construction of code equations for eq
haftmann
parents:
30242
diff
changeset
|
373 |
val triv_injects = map_filter |
1a5591ecb764
tuned and generalized construction of code equations for eq
haftmann
parents:
30242
diff
changeset
|
374 |
(fn (c, []) => SOME (HOLogic.mk_Trueprop (true_eq (Const (c, ty), Const (c, ty)))) |
1a5591ecb764
tuned and generalized construction of code equations for eq
haftmann
parents:
30242
diff
changeset
|
375 |
| _ => NONE) cos; |
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376 |
fun prep_inject (trueprop $ (equiv $ (_ $ t1 $ t2) $ rhs)) = |
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377 |
trueprop $ (equiv $ mk_eq (t1, t2) $ rhs); |
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378 |
val injects = map prep_inject (nth (DatatypeProp.make_injs [descr] vs) index); |
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|
379 |
fun prep_distinct (trueprop $ (not $ (_ $ t1 $ t2))) = |
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|
380 |
[trueprop $ false_eq (t1, t2), trueprop $ false_eq (t2, t1)]; |
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381 |
val distincts = maps prep_distinct (snd (nth (DatatypeProp.make_distincts [descr] vs) index)); |
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382 |
val refl = HOLogic.mk_Trueprop (true_eq (Free ("x", ty), Free ("x", ty))); |
32902 | 383 |
val simpset = Simplifier.context (ProofContext.init thy) (HOL_basic_ss addsimps |
384 |
(map Simpdata.mk_eq (@{thm eq} :: @{thm eq_True} :: inject_thms @ distinct_thms))); |
|
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|
385 |
fun prove prop = Skip_Proof.prove_global thy [] [] prop (K (ALLGOALS (simp_tac simpset))) |
31151 | 386 |
|> Simpdata.mk_eq; |
33006 | 387 |
in (map prove (triv_injects @ injects @ distincts), prove refl) end; |
20426 | 388 |
|
31134
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|
389 |
fun add_equality vs dtcos thy = |
20597 | 390 |
let |
28350 | 391 |
fun add_def dtco lthy = |
26513 | 392 |
let |
31134
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|
393 |
val ty = Type (dtco, map TFree vs); |
26513 | 394 |
fun mk_side const_name = Const (const_name, ty --> ty --> HOLogic.boolT) |
395 |
$ Free ("x", ty) $ Free ("y", ty); |
|
396 |
val def = HOLogic.mk_Trueprop (HOLogic.mk_eq |
|
26732 | 397 |
(mk_side @{const_name eq_class.eq}, mk_side @{const_name "op ="})); |
26513 | 398 |
val def' = Syntax.check_term lthy def; |
399 |
val ((_, (_, thm)), lthy') = Specification.definition |
|
28965 | 400 |
(NONE, (Attrib.empty_binding, def')) lthy; |
26513 | 401 |
val ctxt_thy = ProofContext.init (ProofContext.theory_of lthy); |
402 |
val thm' = singleton (ProofContext.export lthy' ctxt_thy) thm; |
|
403 |
in (thm', lthy') end; |
|
404 |
fun tac thms = Class.intro_classes_tac [] |
|
405 |
THEN ALLGOALS (ProofContext.fact_tac thms); |
|
33007 | 406 |
fun add_eq_thms dtco = |
407 |
Theory.checkpoint |
|
408 |
#> `(fn thy => mk_eq_eqns thy dtco) |
|
409 |
#-> (fn (thms, thm) => |
|
410 |
Code.add_nbe_eqn thm |
|
411 |
#> fold_rev Code.add_eqn thms); |
|
20597 | 412 |
in |
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|
413 |
thy |
31134
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|
414 |
|> TheoryTarget.instantiation (dtcos, vs, [HOLogic.class_eq]) |
26513 | 415 |
|> fold_map add_def dtcos |
31134
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|
416 |
|-> (fn def_thms => Class.prove_instantiation_exit_result (map o Morphism.thm) |
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|
417 |
(fn _ => fn def_thms => tac def_thms) def_thms) |
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|
418 |
|-> (fn def_thms => fold Code.del_eqn def_thms) |
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|
419 |
|> fold add_eq_thms dtcos |
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|
420 |
end; |
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|
421 |
|
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|
422 |
|
31625 | 423 |
(* register a datatype etc. *) |
20597 | 424 |
|
31668
a616e56a5ec8
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haftmann
parents:
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changeset
|
425 |
fun add_all_code config dtcos thy = |
31134
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|
426 |
let |
31784 | 427 |
val (vs :: _, coss) = (split_list o map (Datatype.the_spec thy)) dtcos; |
31134
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|
428 |
val any_css = map2 (mk_constr_consts thy vs) dtcos coss; |
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|
429 |
val css = if exists is_none any_css then [] |
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|
430 |
else map_filter I any_css; |
31784 | 431 |
val case_rewrites = maps (#case_rewrites o Datatype.the_info thy) dtcos; |
31134
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|
432 |
val certs = map (mk_case_cert thy) dtcos; |
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changeset
|
433 |
in |
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changeset
|
434 |
if null css then thy |
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changeset
|
435 |
else thy |
31668
a616e56a5ec8
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haftmann
parents:
31625
diff
changeset
|
436 |
|> tap (fn _ => DatatypeAux.message config "Registering datatype for code generator ...") |
31134
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changeset
|
437 |
|> fold Code.add_datatype css |
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changeset
|
438 |
|> fold_rev Code.add_default_eqn case_rewrites |
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changeset
|
439 |
|> fold Code.add_case certs |
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parents:
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diff
changeset
|
440 |
|> add_equality vs dtcos |
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changeset
|
441 |
end; |
1a5591ecb764
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parents:
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changeset
|
442 |
|
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changeset
|
443 |
|
20426 | 444 |
(** theory setup **) |
445 |
||
19008 | 446 |
val setup = |
20597 | 447 |
add_codegen "datatype" datatype_codegen |
24626
85eceef2edc7
introduced generic concepts for theory interpretators
haftmann
parents:
24624
diff
changeset
|
448 |
#> add_tycodegen "datatype" datatype_tycodegen |
31723
f5cafe803b55
discontinued ancient tradition to suffix certain ML module names with "_package"
haftmann
parents:
31668
diff
changeset
|
449 |
#> Datatype.interpretation add_all_code |
20597 | 450 |
|
12445 | 451 |
end; |