author | wenzelm |
Tue, 22 Mar 2011 15:32:47 +0100 | |
changeset 42052 | 34f1d2d81284 |
parent 42050 | 5a505dfec04e |
child 42053 | 006095137a81 |
permissions | -rw-r--r-- |
18 | 1 |
(* Title: Pure/Syntax/type_ext.ML |
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Author: Tobias Nipkow and Markus Wenzel, TU Muenchen |
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authentic syntax for classes and type constructors;
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Utilities for input and output of types. The concrete syntax of types. |
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*) |
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||
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signature TYPE_EXT0 = |
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sig |
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val sort_of_term: term -> sort |
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val term_sorts: term -> (indexname * sort) list |
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val typ_of_term: (indexname -> sort) -> term -> typ |
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val strip_positions: term -> term |
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val strip_positions_ast: Ast.ast -> Ast.ast |
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val decode_term: (((string * int) * sort) list -> string * int -> sort) -> |
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parents:
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(string -> bool * string) -> (string -> string option) -> term -> term |
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val term_of_typ: bool -> typ -> term |
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val no_brackets: unit -> bool |
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val no_type_brackets: unit -> bool |
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val type_ast_trs: |
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{read_class: Proof.context -> string -> string, |
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read_type: Proof.context -> string -> string} -> |
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(string * (Proof.context -> Ast.ast list -> Ast.ast)) list |
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end; |
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signature TYPE_EXT = |
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sig |
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include TYPE_EXT0 |
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val term_of_sort: sort -> term |
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val tappl_ast_tr': Ast.ast * Ast.ast list -> Ast.ast |
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val sortT: typ |
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val type_ext: Syn_Ext.syn_ext |
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end; |
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structure Type_Ext: TYPE_EXT = |
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struct |
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(** input utils **) |
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(* sort_of_term *) |
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35429
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authentic syntax for classes and type constructors;
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parents:
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fun sort_of_term tm = |
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let |
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authentic syntax for classes and type constructors;
wenzelm
parents:
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fun err () = raise TERM ("sort_of_term: bad encoding of classes", [tm]); |
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authentic syntax for classes and type constructors;
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parents:
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|
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authentic syntax for classes and type constructors;
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parents:
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fun class s = Lexicon.unmark_class s handle Fail _ => err (); |
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authentic syntax for classes and type constructors;
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parents:
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|
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authentic syntax for classes and type constructors;
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parents:
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fun classes (Const (s, _)) = [class s] |
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| classes (Const ("_classes", _) $ Const (s, _) $ cs) = class s :: classes cs |
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| classes _ = err (); |
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fun sort (Const ("_topsort", _)) = [] |
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| sort (Const (s, _)) = [class s] |
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| sort (Const ("_sort", _) $ cs) = classes cs |
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parents:
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| sort _ = err (); |
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in sort tm end; |
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(* term_sorts *) |
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parents:
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fun term_sorts tm = |
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let |
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val sort_of = sort_of_term; |
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fun add_env (Const ("_ofsort", _) $ Free (x, _) $ cs) = |
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insert (op =) ((x, ~1), sort_of cs) |
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| add_env (Const ("_ofsort", _) $ (Const ("_tfree", _) $ Free (x, _)) $ cs) = |
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insert (op =) ((x, ~1), sort_of cs) |
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| add_env (Const ("_ofsort", _) $ Var (xi, _) $ cs) = |
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insert (op =) (xi, sort_of cs) |
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| add_env (Const ("_ofsort", _) $ (Const ("_tvar", _) $ Var (xi, _)) $ cs) = |
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insert (op =) (xi, sort_of cs) |
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| add_env (Abs (_, _, t)) = add_env t |
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| add_env (t1 $ t2) = add_env t1 #> add_env t2 |
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| add_env _ = I; |
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in add_env tm [] end; |
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|
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(* typ_of_term *) |
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parents:
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fun typ_of_term get_sort tm = |
557
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let |
35429
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authentic syntax for classes and type constructors;
wenzelm
parents:
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fun err () = raise TERM ("typ_of_term: bad encoding of type", [tm]); |
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authentic syntax for classes and type constructors;
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parents:
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|
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authentic syntax for classes and type constructors;
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parents:
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fun typ_of (Free (x, _)) = TFree (x, get_sort (x, ~1)) |
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| typ_of (Var (xi, _)) = TVar (xi, get_sort xi) |
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| typ_of (Const ("_tfree",_) $ (t as Free _)) = typ_of t |
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| typ_of (Const ("_tvar",_) $ (t as Var _)) = typ_of t |
|
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| typ_of (Const ("_ofsort", _) $ Free (x, _) $ _) = TFree (x, get_sort (x, ~1)) |
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| typ_of (Const ("_ofsort", _) $ (Const ("_tfree",_) $ Free (x, _)) $ _) = |
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TFree (x, get_sort (x, ~1)) |
|
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| typ_of (Const ("_ofsort", _) $ Var (xi, _) $ _) = TVar (xi, get_sort xi) |
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| typ_of (Const ("_ofsort", _) $ (Const ("_tvar",_) $ Var (xi, _)) $ _) = |
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TVar (xi, get_sort xi) |
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parents:
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| typ_of (Const ("_dummy_ofsort", _) $ t) = TFree ("'_dummy_", sort_of_term t) |
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| typ_of t = |
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let |
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val (head, args) = Term.strip_comb t; |
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val a = |
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parents:
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(case head of |
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Const (c, _) => (Lexicon.unmark_type c handle Fail _ => err ()) |
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| _ => err ()); |
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in Type (a, map typ_of args) end; |
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in typ_of tm end; |
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||
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(* positions *) |
22704 | 107 |
|
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fun is_position (Free (x, _)) = is_some (Lexicon.decode_position x) |
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| is_position _ = false; |
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110 |
|
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fun strip_positions ((t as Const (c, _)) $ u $ v) = |
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if (c = "_constrain" orelse c = "_constrainAbs") andalso is_position v |
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then strip_positions u |
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else t $ strip_positions u $ strip_positions v |
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| strip_positions (t $ u) = strip_positions t $ strip_positions u |
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| strip_positions (Abs (x, T, t)) = Abs (x, T, strip_positions t) |
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| strip_positions t = t; |
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118 |
|
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fun strip_positions_ast (Ast.Appl ((t as Ast.Constant c) :: u :: (v as Ast.Variable x) :: asts)) = |
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if (c = "_constrain" orelse c = "_constrainAbs") andalso is_some (Lexicon.decode_position x) |
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then Ast.mk_appl (strip_positions_ast u) (map strip_positions_ast asts) |
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else Ast.Appl (map strip_positions_ast (t :: u :: v :: asts)) |
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| strip_positions_ast (Ast.Appl asts) = Ast.Appl (map strip_positions_ast asts) |
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| strip_positions_ast ast = ast; |
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125 |
|
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126 |
|
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(* decode_term -- transform parse tree into raw term *) |
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128 |
|
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fun decode_term get_sort map_const map_free tm = |
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let |
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val decodeT = typ_of_term (get_sort (term_sorts tm)); |
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|
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fun decode (Const ("_constrain", _) $ t $ typ) = |
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if is_position typ then decode t |
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else Type.constraint (decodeT typ) (decode t) |
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| decode (Const ("_constrainAbs", _) $ t $ typ) = |
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if is_position typ then decode t |
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else Type.constraint (decodeT typ --> dummyT) (decode t) |
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parents:
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| decode (Abs (x, T, t)) = Abs (x, T, decode t) |
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| decode (t $ u) = decode t $ decode u |
141 |
| decode (Const (a, T)) = |
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(case try Lexicon.unmark_fixed a of |
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SOME x => Free (x, T) |
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144 |
| NONE => |
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let val c = |
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146 |
(case try Lexicon.unmark_const a of |
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SOME c => c |
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148 |
| NONE => snd (map_const a)) |
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149 |
in Const (c, T) end) |
22704 | 150 |
| decode (Free (a, T)) = |
151 |
(case (map_free a, map_const a) of |
|
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parents:
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(SOME x, _) => Free (x, T) |
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| (_, (true, c)) => Const (c, T) |
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| (_, (false, c)) => (if Long_Name.is_qualified c then Const else Free) (c, T)) |
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|
155 |
| decode (Var (xi, T)) = Var (xi, T) |
22704 | 156 |
| decode (t as Bound _) = t; |
157 |
in decode tm end; |
|
158 |
||
159 |
||
0 | 160 |
|
2584 | 161 |
(** output utils **) |
162 |
||
2699 | 163 |
(* term_of_sort *) |
2584 | 164 |
|
165 |
fun term_of_sort S = |
|
166 |
let |
|
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wenzelm
parents:
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diff
changeset
|
167 |
val class = Lexicon.const o Lexicon.mark_class; |
2584 | 168 |
|
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parents:
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|
169 |
fun classes [c] = class c |
5690 | 170 |
| classes (c :: cs) = Lexicon.const "_classes" $ class c $ classes cs; |
2584 | 171 |
in |
172 |
(case S of |
|
5690 | 173 |
[] => Lexicon.const "_topsort" |
2584 | 174 |
| [c] => class c |
5690 | 175 |
| cs => Lexicon.const "_sort" $ classes cs) |
2584 | 176 |
end; |
177 |
||
178 |
||
179 |
(* term_of_typ *) |
|
0 | 180 |
|
181 |
fun term_of_typ show_sorts ty = |
|
182 |
let |
|
2584 | 183 |
fun of_sort t S = |
5690 | 184 |
if show_sorts then Lexicon.const "_ofsort" $ t $ term_of_sort S |
2584 | 185 |
else t; |
0 | 186 |
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fun term_of (Type (a, Ts)) = |
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188 |
Term.list_comb (Lexicon.const (Lexicon.mark_type a), map term_of Ts) |
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189 |
| term_of (TFree (x, S)) = |
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190 |
if is_some (Lexicon.decode_position x) then Lexicon.free x |
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191 |
else of_sort (Lexicon.const "_tfree" $ Lexicon.free x) S |
5690 | 192 |
| term_of (TVar (xi, S)) = of_sort (Lexicon.const "_tvar" $ Lexicon.var xi) S; |
8895 | 193 |
in term_of ty end; |
0 | 194 |
|
195 |
||
196 |
||
197 |
(** the type syntax **) |
|
198 |
||
10572 | 199 |
(* print mode *) |
200 |
||
201 |
val bracketsN = "brackets"; |
|
202 |
val no_bracketsN = "no_brackets"; |
|
203 |
||
204 |
fun no_brackets () = |
|
24613 | 205 |
find_first (fn mode => mode = bracketsN orelse mode = no_bracketsN) |
206 |
(print_mode_value ()) = SOME no_bracketsN; |
|
11312 | 207 |
|
208 |
val type_bracketsN = "type_brackets"; |
|
209 |
val no_type_bracketsN = "no_type_brackets"; |
|
210 |
||
211 |
fun no_type_brackets () = |
|
24613 | 212 |
find_first (fn mode => mode = type_bracketsN orelse mode = no_type_bracketsN) |
213 |
(print_mode_value ()) <> SOME type_bracketsN; |
|
10572 | 214 |
|
215 |
||
18 | 216 |
(* parse ast translations *) |
0 | 217 |
|
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val class_ast = Ast.Constant o Lexicon.mark_class; |
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val type_ast = Ast.Constant o Lexicon.mark_type; |
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220 |
|
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221 |
fun class_name_tr read_class (*"_class_name"*) [Ast.Variable c] = class_ast (read_class c) |
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| class_name_tr _ (*"_class_name"*) asts = raise Ast.AST ("class_name_tr", asts); |
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223 |
|
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224 |
fun classes_tr read_class (*"_classes"*) [Ast.Variable c, ast] = |
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Ast.mk_appl (Ast.Constant "_classes") [class_ast (read_class c), ast] |
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| classes_tr _ (*"_classes"*) asts = raise Ast.AST ("classes_tr", asts); |
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227 |
|
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228 |
fun type_name_tr read_type (*"_type_name"*) [Ast.Variable c] = type_ast (read_type c) |
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| type_name_tr _ (*"_type_name"*) asts = raise Ast.AST ("type_name_tr", asts); |
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230 |
|
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231 |
fun tapp_ast_tr read_type (*"_tapp"*) [ty, Ast.Variable c] = |
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232 |
Ast.Appl [type_ast (read_type c), ty] |
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| tapp_ast_tr _ (*"_tapp"*) asts = raise Ast.AST ("tapp_ast_tr", asts); |
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234 |
|
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235 |
fun tappl_ast_tr read_type (*"_tappl"*) [ty, tys, Ast.Variable c] = |
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236 |
Ast.Appl (type_ast (read_type c) :: ty :: Ast.unfold_ast "_types" tys) |
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| tappl_ast_tr _ (*"_tappl"*) asts = raise Ast.AST ("tappl_ast_tr", asts); |
0 | 238 |
|
239 |
fun bracket_ast_tr (*"_bracket"*) [dom, cod] = |
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Ast.fold_ast_p "\\<^type>fun" (Ast.unfold_ast "_types" dom, cod) |
5690 | 241 |
| bracket_ast_tr (*"_bracket"*) asts = raise Ast.AST ("bracket_ast_tr", asts); |
0 | 242 |
|
243 |
||
18 | 244 |
(* print ast translations *) |
0 | 245 |
|
5690 | 246 |
fun tappl_ast_tr' (f, []) = raise Ast.AST ("tappl_ast_tr'", [f]) |
247 |
| tappl_ast_tr' (f, [ty]) = Ast.Appl [Ast.Constant "_tapp", ty, f] |
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248 |
| tappl_ast_tr' (f, ty :: tys) = |
5690 | 249 |
Ast.Appl [Ast.Constant "_tappl", ty, Ast.fold_ast "_types" tys, f]; |
0 | 250 |
|
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251 |
fun fun_ast_tr' (*"\\<^type>fun"*) asts = |
16614 | 252 |
if no_brackets () orelse no_type_brackets () then raise Match |
10572 | 253 |
else |
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254 |
(case Ast.unfold_ast_p "\\<^type>fun" (Ast.Appl (Ast.Constant "\\<^type>fun" :: asts)) of |
10572 | 255 |
(dom as _ :: _ :: _, cod) |
256 |
=> Ast.Appl [Ast.Constant "_bracket", Ast.fold_ast "_types" dom, cod] |
|
257 |
| _ => raise Match); |
|
0 | 258 |
|
259 |
||
260 |
(* type_ext *) |
|
261 |
||
262 |
val sortT = Type ("sort", []); |
|
263 |
val classesT = Type ("classes", []); |
|
264 |
val typesT = Type ("types", []); |
|
265 |
||
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266 |
local open Lexicon Syn_Ext in |
5690 | 267 |
|
35668 | 268 |
val type_ext = syn_ext' false (K false) |
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|
269 |
[Mfix ("_", tidT --> typeT, "", [], max_pri), |
239 | 270 |
Mfix ("_", tvarT --> typeT, "", [], max_pri), |
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Mfix ("_", idT --> typeT, "_type_name", [], max_pri), |
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272 |
Mfix ("_", longidT --> typeT, "_type_name", [], max_pri), |
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273 |
Mfix ("_::_", [tidT, sortT] ---> typeT, "_ofsort", [max_pri, 0], max_pri), |
239 | 274 |
Mfix ("_::_", [tvarT, sortT] ---> typeT, "_ofsort", [max_pri, 0], max_pri), |
14838 | 275 |
Mfix ("'_()::_", sortT --> typeT, "_dummy_ofsort", [0], max_pri), |
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276 |
Mfix ("_", idT --> sortT, "_class_name", [], max_pri), |
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277 |
Mfix ("_", longidT --> sortT, "_class_name", [], max_pri), |
2584 | 278 |
Mfix ("{}", sortT, "_topsort", [], max_pri), |
239 | 279 |
Mfix ("{_}", classesT --> sortT, "_sort", [], max_pri), |
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280 |
Mfix ("_", idT --> classesT, "_class_name", [], max_pri), |
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281 |
Mfix ("_", longidT --> classesT, "_class_name", [], max_pri), |
239 | 282 |
Mfix ("_,_", [idT, classesT] ---> classesT, "_classes", [], max_pri), |
3829 | 283 |
Mfix ("_,_", [longidT, classesT] ---> classesT, "_classes", [], max_pri), |
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284 |
Mfix ("_ _", [typeT, idT] ---> typeT, "_tapp", [max_pri, 0], max_pri), |
3829 | 285 |
Mfix ("_ _", [typeT, longidT] ---> typeT, "_tapp", [max_pri, 0], max_pri), |
9067 | 286 |
Mfix ("((1'(_,/ _')) _)", [typeT, typesT, idT] ---> typeT, "_tappl", [], max_pri), |
287 |
Mfix ("((1'(_,/ _')) _)", [typeT, typesT, longidT] ---> typeT, "_tappl", [], max_pri), |
|
239 | 288 |
Mfix ("_", typeT --> typesT, "", [], max_pri), |
289 |
Mfix ("_,/ _", [typeT, typesT] ---> typesT, "_types", [], max_pri), |
|
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290 |
Mfix ("(_/ => _)", [typeT, typeT] ---> typeT, "\\<^type>fun", [1, 0], 0), |
624 | 291 |
Mfix ("([_]/ => _)", [typesT, typeT] ---> typeT, "_bracket", [0, 0], 0), |
2678 | 292 |
Mfix ("'(_')", typeT --> typeT, "", [0], max_pri), |
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293 |
Mfix ("'_", typeT, "\\<^type>dummy", [], max_pri)] |
35433
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|
294 |
["_type_prop"] |
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|
295 |
([], [], [], map Syn_Ext.mk_trfun [("\\<^type>fun", K fun_ast_tr')]) |
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|
296 |
[] |
239 | 297 |
([], []); |
0 | 298 |
|
35668 | 299 |
fun type_ast_trs {read_class, read_type} = |
300 |
[("_class_name", class_name_tr o read_class), |
|
301 |
("_classes", classes_tr o read_class), |
|
302 |
("_type_name", type_name_tr o read_type), |
|
303 |
("_tapp", tapp_ast_tr o read_type), |
|
304 |
("_tappl", tappl_ast_tr o read_type), |
|
305 |
("_bracket", K bracket_ast_tr)]; |
|
306 |
||
0 | 307 |
end; |
5690 | 308 |
|
309 |
end; |