author | paulson <lp15@cam.ac.uk> |
Sun, 20 May 2018 18:37:34 +0100 | |
changeset 68239 | 0764ee22a4d1 |
parent 66245 | da3b0e848182 |
child 74232 | 1091880266e5 |
permissions | -rw-r--r-- |
256 | 1 |
(* Title: Pure/type.ML |
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major cleanup of tsig datastructures and extend/merge operations; fixes old bugs in classes/arities code; proper treatment of nonterminals and syntax-only types;
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2 |
Author: Tobias Nipkow, Lawrence C Paulson, and Markus Wenzel |
0 | 3 |
|
14790
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major cleanup of tsig datastructures and extend/merge operations; fixes old bugs in classes/arities code; proper treatment of nonterminals and syntax-only types;
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parents:
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diff
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4 |
Type signatures and certified types, special treatment of type vars, |
0d984ee030a1
major cleanup of tsig datastructures and extend/merge operations; fixes old bugs in classes/arities code; proper treatment of nonterminals and syntax-only types;
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parents:
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5 |
matching and unification of types, extend and merge type signatures. |
0 | 6 |
*) |
7 |
||
8 |
signature TYPE = |
|
2964 | 9 |
sig |
39288 | 10 |
(*constraints*) |
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load type_infer.ML later -- proper context for Type_Infer.infer_types;
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parents:
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11 |
val mark_polymorphic: typ -> typ |
39288 | 12 |
val constraint: typ -> term -> term |
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pass term positions into check phase, where resulting types are reported accordingly, and eventually shown as tooltips;
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parents:
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13 |
val constraint_type: Proof.context -> typ -> typ |
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Type_Infer.preterm: eliminated separate Constraint;
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val strip_constraints: term -> term |
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simplified pretty printing context, which is only required for certain kernel operations;
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parents:
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15 |
val appl_error: Proof.context -> term -> typ -> term -> typ -> string |
14790
0d984ee030a1
major cleanup of tsig datastructures and extend/merge operations; fixes old bugs in classes/arities code; proper treatment of nonterminals and syntax-only types;
wenzelm
parents:
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diff
changeset
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16 |
(*type signatures and certified types*) |
0d984ee030a1
major cleanup of tsig datastructures and extend/merge operations; fixes old bugs in classes/arities code; proper treatment of nonterminals and syntax-only types;
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parents:
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17 |
datatype decl = |
0d984ee030a1
major cleanup of tsig datastructures and extend/merge operations; fixes old bugs in classes/arities code; proper treatment of nonterminals and syntax-only types;
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LogicalType of int | |
14989 | 19 |
Abbreviation of string list * typ * bool | |
14790
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major cleanup of tsig datastructures and extend/merge operations; fixes old bugs in classes/arities code; proper treatment of nonterminals and syntax-only types;
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20 |
Nonterminal |
0d984ee030a1
major cleanup of tsig datastructures and extend/merge operations; fixes old bugs in classes/arities code; proper treatment of nonterminals and syntax-only types;
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21 |
type tsig |
35669
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added ProofContext.tsig_of -- proforma version for local name space only, not logical content;
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22 |
val eq_tsig: tsig * tsig -> bool |
14790
0d984ee030a1
major cleanup of tsig datastructures and extend/merge operations; fixes old bugs in classes/arities code; proper treatment of nonterminals and syntax-only types;
wenzelm
parents:
13666
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changeset
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23 |
val rep_tsig: tsig -> |
33095
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renamed NameSpace to Name_Space -- also to emphasize its subtle change in semantics;
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24 |
{classes: Name_Space.T * Sorts.algebra, |
14790
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major cleanup of tsig datastructures and extend/merge operations; fixes old bugs in classes/arities code; proper treatment of nonterminals and syntax-only types;
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parents:
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default: sort, |
33173
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eliminated obsolete tags for types/consts -- now handled via name space, in strongly typed fashion;
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types: decl Name_Space.table, |
26641 | 27 |
log_types: string list} |
56056
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more efficient local theory operations, by imposing a linear change discipline on the main types/consts tables, in order to speed-up Proof_Context.transfer_syntax required for Local_Theory.raw_theory_result;
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val change_base: bool -> tsig -> tsig |
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more frugal recording of changes: join merely requires information from one side;
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val change_ignore: tsig -> tsig |
14790
0d984ee030a1
major cleanup of tsig datastructures and extend/merge operations; fixes old bugs in classes/arities code; proper treatment of nonterminals and syntax-only types;
wenzelm
parents:
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changeset
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val empty_tsig: tsig |
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added ProofContext.tsig_of -- proforma version for local name space only, not logical content;
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val class_space: tsig -> Name_Space.T |
14790
0d984ee030a1
major cleanup of tsig datastructures and extend/merge operations; fixes old bugs in classes/arities code; proper treatment of nonterminals and syntax-only types;
wenzelm
parents:
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val defaultS: tsig -> sort |
0d984ee030a1
major cleanup of tsig datastructures and extend/merge operations; fixes old bugs in classes/arities code; proper treatment of nonterminals and syntax-only types;
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val logical_types: tsig -> string list |
0d984ee030a1
major cleanup of tsig datastructures and extend/merge operations; fixes old bugs in classes/arities code; proper treatment of nonterminals and syntax-only types;
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val eq_sort: tsig -> sort * sort -> bool |
0d984ee030a1
major cleanup of tsig datastructures and extend/merge operations; fixes old bugs in classes/arities code; proper treatment of nonterminals and syntax-only types;
wenzelm
parents:
13666
diff
changeset
|
35 |
val subsort: tsig -> sort * sort -> bool |
0d984ee030a1
major cleanup of tsig datastructures and extend/merge operations; fixes old bugs in classes/arities code; proper treatment of nonterminals and syntax-only types;
wenzelm
parents:
13666
diff
changeset
|
36 |
val of_sort: tsig -> typ * sort -> bool |
19464 | 37 |
val inter_sort: tsig -> sort * sort -> sort |
14790
0d984ee030a1
major cleanup of tsig datastructures and extend/merge operations; fixes old bugs in classes/arities code; proper treatment of nonterminals and syntax-only types;
wenzelm
parents:
13666
diff
changeset
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val cert_class: tsig -> class -> class |
0d984ee030a1
major cleanup of tsig datastructures and extend/merge operations; fixes old bugs in classes/arities code; proper treatment of nonterminals and syntax-only types;
wenzelm
parents:
13666
diff
changeset
|
39 |
val cert_sort: tsig -> sort -> sort |
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val minimize_sort: tsig -> sort -> sort |
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witness_sorts: proper type witnesses for hyps, not invented "'hyp" variables;
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41 |
val witness_sorts: tsig -> (typ * sort) list -> sort list -> (typ * sort) list |
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type mode: models certification mode (default, syntax, abbrev);
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42 |
type mode |
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type mode: models certification mode (default, syntax, abbrev);
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val mode_default: mode |
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type mode: models certification mode (default, syntax, abbrev);
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val mode_syntax: mode |
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type mode: models certification mode (default, syntax, abbrev);
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45 |
val mode_abbrev: mode |
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val get_mode: Proof.context -> mode |
47 |
val set_mode: mode -> Proof.context -> Proof.context |
|
48 |
val restore_mode: Proof.context -> Proof.context -> Proof.context |
|
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added ProofContext.tsig_of -- proforma version for local name space only, not logical content;
wenzelm
parents:
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val type_space: tsig -> Name_Space.T |
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val type_alias: Name_Space.naming -> binding -> string -> tsig -> tsig |
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more markup for inner syntax class/type names (notably for completion);
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val check_decl: Context.generic -> tsig -> |
710bc66f432c
more markup for inner syntax class/type names (notably for completion);
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xstring * Position.T -> (string * Position.report list) * decl |
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val the_decl: tsig -> string * Position.T -> decl |
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type mode: models certification mode (default, syntax, abbrev);
wenzelm
parents:
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diff
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54 |
val cert_typ_mode: mode -> tsig -> typ -> typ |
14993 | 55 |
val cert_typ: tsig -> typ -> typ |
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val arity_number: tsig -> string -> int |
61262
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tuned signature: eliminated pointless type Context.pretty;
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57 |
val arity_sorts: Context.generic -> tsig -> string -> sort -> sort list |
14790
0d984ee030a1
major cleanup of tsig datastructures and extend/merge operations; fixes old bugs in classes/arities code; proper treatment of nonterminals and syntax-only types;
wenzelm
parents:
13666
diff
changeset
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58 |
|
0d984ee030a1
major cleanup of tsig datastructures and extend/merge operations; fixes old bugs in classes/arities code; proper treatment of nonterminals and syntax-only types;
wenzelm
parents:
13666
diff
changeset
|
59 |
(*special treatment of type vars*) |
36621
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proof terms for strip_shyps, based on the version by krauss/schropp with some notable differences:
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60 |
val sort_of_atyp: typ -> sort |
14790
0d984ee030a1
major cleanup of tsig datastructures and extend/merge operations; fixes old bugs in classes/arities code; proper treatment of nonterminals and syntax-only types;
wenzelm
parents:
13666
diff
changeset
|
61 |
val strip_sorts: typ -> typ |
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use explicit Type.strip_sorts_dummy to suppress sort constraints in output;
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62 |
val strip_sorts_dummy: typ -> typ |
621 | 63 |
val no_tvars: typ -> typ |
35845
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renamed varify/unvarify operations to varify_global/unvarify_global to emphasize that these only work in a global situation;
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64 |
val varify_global: (string * sort) list -> term -> ((string * sort) * indexname) list * term |
33832 | 65 |
val legacy_freeze_thaw_type: typ -> typ * (typ -> typ) |
66 |
val legacy_freeze_type: typ -> typ |
|
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val legacy_freeze_thaw: term -> term * (term -> term) |
|
68 |
val legacy_freeze: term -> term |
|
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|
14790
0d984ee030a1
major cleanup of tsig datastructures and extend/merge operations; fixes old bugs in classes/arities code; proper treatment of nonterminals and syntax-only types;
wenzelm
parents:
13666
diff
changeset
|
70 |
(*matching and unification*) |
2964 | 71 |
exception TYPE_MATCH |
25324 | 72 |
type tyenv = (sort * typ) Vartab.table |
26327 | 73 |
val lookup: tyenv -> indexname * sort -> typ option |
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Correct chasing of type variable instantiations during type unification.
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74 |
val devar: tyenv -> typ -> typ |
16946 | 75 |
val typ_match: tsig -> typ * typ -> tyenv -> tyenv |
14790
0d984ee030a1
major cleanup of tsig datastructures and extend/merge operations; fixes old bugs in classes/arities code; proper treatment of nonterminals and syntax-only types;
wenzelm
parents:
13666
diff
changeset
|
76 |
val typ_instance: tsig -> typ * typ -> bool |
16946 | 77 |
val raw_match: typ * typ -> tyenv -> tyenv |
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val raw_matches: typ list * typ list -> tyenv -> tyenv |
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minor performance tuning via fast matching filter;
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79 |
val could_match: typ * typ -> bool |
fdccbb97915a
minor performance tuning via fast matching filter;
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80 |
val could_matches: typ list * typ list -> bool |
16946 | 81 |
val raw_instance: typ * typ -> bool |
2964 | 82 |
exception TUNIFY |
16946 | 83 |
val unify: tsig -> typ * typ -> tyenv * int -> tyenv * int |
84 |
val raw_unify: typ * typ -> tyenv -> tyenv |
|
19696 | 85 |
val raw_unifys: typ list * typ list -> tyenv -> tyenv |
17804 | 86 |
val could_unify: typ * typ -> bool |
19696 | 87 |
val could_unifys: typ list * typ list -> bool |
58949
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clarified name of Type.unified, to emphasize its connection to the "unify" family;
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88 |
val unified: tyenv -> typ * typ -> bool |
0 | 89 |
|
14790
0d984ee030a1
major cleanup of tsig datastructures and extend/merge operations; fixes old bugs in classes/arities code; proper treatment of nonterminals and syntax-only types;
wenzelm
parents:
13666
diff
changeset
|
90 |
(*extend and merge type signatures*) |
47005
421760a1efe7
maintain generic context naming in structure Name_Space (NB: empty = default_naming, init = local_naming);
wenzelm
parents:
46649
diff
changeset
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91 |
val add_class: Context.generic -> binding * class list -> tsig -> tsig |
26669 | 92 |
val hide_class: bool -> string -> tsig -> tsig |
14790
0d984ee030a1
major cleanup of tsig datastructures and extend/merge operations; fixes old bugs in classes/arities code; proper treatment of nonterminals and syntax-only types;
wenzelm
parents:
13666
diff
changeset
|
93 |
val set_defsort: sort -> tsig -> tsig |
47005
421760a1efe7
maintain generic context naming in structure Name_Space (NB: empty = default_naming, init = local_naming);
wenzelm
parents:
46649
diff
changeset
|
94 |
val add_type: Context.generic -> binding * int -> tsig -> tsig |
421760a1efe7
maintain generic context naming in structure Name_Space (NB: empty = default_naming, init = local_naming);
wenzelm
parents:
46649
diff
changeset
|
95 |
val add_abbrev: Context.generic -> binding * string list * typ -> tsig -> tsig |
421760a1efe7
maintain generic context naming in structure Name_Space (NB: empty = default_naming, init = local_naming);
wenzelm
parents:
46649
diff
changeset
|
96 |
val add_nonterminal: Context.generic -> binding -> tsig -> tsig |
26669 | 97 |
val hide_type: bool -> string -> tsig -> tsig |
61262
7bd1eb4b056e
tuned signature: eliminated pointless type Context.pretty;
wenzelm
parents:
59885
diff
changeset
|
98 |
val add_arity: Context.generic -> arity -> tsig -> tsig |
7bd1eb4b056e
tuned signature: eliminated pointless type Context.pretty;
wenzelm
parents:
59885
diff
changeset
|
99 |
val add_classrel: Context.generic -> class * class -> tsig -> tsig |
7bd1eb4b056e
tuned signature: eliminated pointless type Context.pretty;
wenzelm
parents:
59885
diff
changeset
|
100 |
val merge_tsig: Context.generic -> tsig * tsig -> tsig |
2964 | 101 |
end; |
102 |
||
103 |
structure Type: TYPE = |
|
0 | 104 |
struct |
105 |
||
39288 | 106 |
(** constraints **) |
107 |
||
39290
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load type_infer.ML later -- proper context for Type_Infer.infer_types;
wenzelm
parents:
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diff
changeset
|
108 |
(*indicate polymorphic Vars*) |
44e4d8dfd6bf
load type_infer.ML later -- proper context for Type_Infer.infer_types;
wenzelm
parents:
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diff
changeset
|
109 |
fun mark_polymorphic T = Type ("_polymorphic_", [T]); |
44e4d8dfd6bf
load type_infer.ML later -- proper context for Type_Infer.infer_types;
wenzelm
parents:
39289
diff
changeset
|
110 |
|
39288 | 111 |
fun constraint T t = |
112 |
if T = dummyT then t |
|
113 |
else Const ("_type_constraint_", T --> T) $ t; |
|
114 |
||
45445
41e641a870de
pass term positions into check phase, where resulting types are reported accordingly, and eventually shown as tooltips;
wenzelm
parents:
44116
diff
changeset
|
115 |
fun constraint_type ctxt T = |
41e641a870de
pass term positions into check phase, where resulting types are reported accordingly, and eventually shown as tooltips;
wenzelm
parents:
44116
diff
changeset
|
116 |
let fun err () = error ("Malformed internal type constraint: " ^ Syntax.string_of_typ ctxt T); |
41e641a870de
pass term positions into check phase, where resulting types are reported accordingly, and eventually shown as tooltips;
wenzelm
parents:
44116
diff
changeset
|
117 |
in (case T of Type ("fun", [A, B]) => if A = B then A else err () | _ => err ()) end; |
41e641a870de
pass term positions into check phase, where resulting types are reported accordingly, and eventually shown as tooltips;
wenzelm
parents:
44116
diff
changeset
|
118 |
|
39292
6f085332c7d3
Type_Infer.preterm: eliminated separate Constraint;
wenzelm
parents:
39290
diff
changeset
|
119 |
fun strip_constraints (Const ("_type_constraint_", _) $ t) = strip_constraints t |
6f085332c7d3
Type_Infer.preterm: eliminated separate Constraint;
wenzelm
parents:
39290
diff
changeset
|
120 |
| strip_constraints (t $ u) = strip_constraints t $ strip_constraints u |
6f085332c7d3
Type_Infer.preterm: eliminated separate Constraint;
wenzelm
parents:
39290
diff
changeset
|
121 |
| strip_constraints (Abs (x, T, t)) = Abs (x, T, strip_constraints t) |
6f085332c7d3
Type_Infer.preterm: eliminated separate Constraint;
wenzelm
parents:
39290
diff
changeset
|
122 |
| strip_constraints a = a; |
6f085332c7d3
Type_Infer.preterm: eliminated separate Constraint;
wenzelm
parents:
39290
diff
changeset
|
123 |
|
42383
0ae4ad40d7b5
simplified pretty printing context, which is only required for certain kernel operations;
wenzelm
parents:
42381
diff
changeset
|
124 |
fun appl_error ctxt (Const ("_type_constraint_", Type ("fun", [T, _]))) _ u U = |
39289
92b50c8bb67b
common Type.appl_error, which also covers explicit constraints;
wenzelm
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diff
changeset
|
125 |
cat_lines |
92b50c8bb67b
common Type.appl_error, which also covers explicit constraints;
wenzelm
parents:
39288
diff
changeset
|
126 |
["Failed to meet type constraint:", "", |
92b50c8bb67b
common Type.appl_error, which also covers explicit constraints;
wenzelm
parents:
39288
diff
changeset
|
127 |
Pretty.string_of (Pretty.block |
42383
0ae4ad40d7b5
simplified pretty printing context, which is only required for certain kernel operations;
wenzelm
parents:
42381
diff
changeset
|
128 |
[Pretty.str "Term:", Pretty.brk 2, Syntax.pretty_term ctxt u, |
0ae4ad40d7b5
simplified pretty printing context, which is only required for certain kernel operations;
wenzelm
parents:
42381
diff
changeset
|
129 |
Pretty.str " ::", Pretty.brk 1, Syntax.pretty_typ ctxt U]), |
39289
92b50c8bb67b
common Type.appl_error, which also covers explicit constraints;
wenzelm
parents:
39288
diff
changeset
|
130 |
Pretty.string_of (Pretty.block |
42383
0ae4ad40d7b5
simplified pretty printing context, which is only required for certain kernel operations;
wenzelm
parents:
42381
diff
changeset
|
131 |
[Pretty.str "Type:", Pretty.brk 2, Syntax.pretty_typ ctxt T])] |
0ae4ad40d7b5
simplified pretty printing context, which is only required for certain kernel operations;
wenzelm
parents:
42381
diff
changeset
|
132 |
| appl_error ctxt t T u U = |
39289
92b50c8bb67b
common Type.appl_error, which also covers explicit constraints;
wenzelm
parents:
39288
diff
changeset
|
133 |
cat_lines |
92b50c8bb67b
common Type.appl_error, which also covers explicit constraints;
wenzelm
parents:
39288
diff
changeset
|
134 |
["Type error in application: " ^ |
92b50c8bb67b
common Type.appl_error, which also covers explicit constraints;
wenzelm
parents:
39288
diff
changeset
|
135 |
(case T of |
92b50c8bb67b
common Type.appl_error, which also covers explicit constraints;
wenzelm
parents:
39288
diff
changeset
|
136 |
Type ("fun", _) => "incompatible operand type" |
92b50c8bb67b
common Type.appl_error, which also covers explicit constraints;
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parents:
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changeset
|
137 |
| _ => "operator not of function type"), |
92b50c8bb67b
common Type.appl_error, which also covers explicit constraints;
wenzelm
parents:
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diff
changeset
|
138 |
"", |
92b50c8bb67b
common Type.appl_error, which also covers explicit constraints;
wenzelm
parents:
39288
diff
changeset
|
139 |
Pretty.string_of (Pretty.block |
42383
0ae4ad40d7b5
simplified pretty printing context, which is only required for certain kernel operations;
wenzelm
parents:
42381
diff
changeset
|
140 |
[Pretty.str "Operator:", Pretty.brk 2, Syntax.pretty_term ctxt t, |
0ae4ad40d7b5
simplified pretty printing context, which is only required for certain kernel operations;
wenzelm
parents:
42381
diff
changeset
|
141 |
Pretty.str " ::", Pretty.brk 1, Syntax.pretty_typ ctxt T]), |
39289
92b50c8bb67b
common Type.appl_error, which also covers explicit constraints;
wenzelm
parents:
39288
diff
changeset
|
142 |
Pretty.string_of (Pretty.block |
42383
0ae4ad40d7b5
simplified pretty printing context, which is only required for certain kernel operations;
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[Pretty.str "Operand:", Pretty.brk 3, Syntax.pretty_term ctxt u, |
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Pretty.str " ::", Pretty.brk 1, Syntax.pretty_typ ctxt U])]; |
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145 |
|
39288 | 146 |
|
147 |
||
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148 |
(** type signatures and certified types **) |
2964 | 149 |
|
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150 |
(* type declarations *) |
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151 |
|
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152 |
datatype decl = |
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LogicalType of int | |
14989 | 154 |
Abbreviation of string list * typ * bool | |
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155 |
Nonterminal; |
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156 |
|
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157 |
|
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158 |
(* type tsig *) |
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159 |
|
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160 |
datatype tsig = |
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TSig of { |
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classes: Name_Space.T * Sorts.algebra, (*order-sorted algebra of type classes*) |
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default: sort, (*default sort on input*) |
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types: decl Name_Space.table, (*declared types*) |
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log_types: string list}; (*logical types sorted by number of arguments*) |
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166 |
|
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167 |
fun eq_tsig |
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(TSig {classes = classes1, default = default1, types = types1, log_types = _}, |
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169 |
TSig {classes = classes2, default = default2, types = types2, log_types = _}) = |
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170 |
pointer_eq (classes1, classes2) andalso |
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default1 = default2 andalso |
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pointer_eq (types1, types2); |
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173 |
|
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fun rep_tsig (TSig comps) = comps; |
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175 |
|
26641 | 176 |
fun make_tsig (classes, default, types, log_types) = |
177 |
TSig {classes = classes, default = default, types = types, log_types = log_types}; |
|
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178 |
|
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fun change_base begin (TSig {classes, default, types, log_types}) = |
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make_tsig (classes, default, Name_Space.change_base begin types, log_types); |
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181 |
|
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fun change_ignore (TSig {classes, default, types, log_types}) = |
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make_tsig (classes, default, Name_Space.change_ignore types, log_types); |
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184 |
|
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fun build_tsig (classes, default, types) = |
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186 |
let |
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187 |
val log_types = |
56025 | 188 |
Name_Space.fold_table (fn (c, LogicalType n) => cons (c, n) | _ => I) types [] |
59058
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189 |
|> Library.sort (int_ord o apply2 snd) |> map fst; |
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190 |
in make_tsig (classes, default, types, log_types) end; |
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191 |
|
26641 | 192 |
fun map_tsig f (TSig {classes, default, types, log_types = _}) = |
19642 | 193 |
build_tsig (f (classes, default, types)); |
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194 |
|
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195 |
val empty_tsig = |
50201
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Isabelle-specific implementation of quasi-abstract markup elements -- back to module arrangement before d83797ef0d2d;
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196 |
build_tsig ((Name_Space.empty Markup.classN, Sorts.empty_algebra), [], |
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197 |
Name_Space.empty_table Markup.type_nameN); |
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198 |
|
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199 |
|
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200 |
(* classes and sorts *) |
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201 |
|
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202 |
val class_space = #1 o #classes o rep_tsig; |
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203 |
|
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204 |
fun defaultS (TSig {default, ...}) = default; |
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205 |
fun logical_types (TSig {log_types, ...}) = log_types; |
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206 |
|
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207 |
fun eq_sort (TSig {classes, ...}) = Sorts.sort_eq (#2 classes); |
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208 |
fun subsort (TSig {classes, ...}) = Sorts.sort_le (#2 classes); |
19642 | 209 |
fun of_sort (TSig {classes, ...}) = Sorts.of_sort (#2 classes); |
19464 | 210 |
fun inter_sort (TSig {classes, ...}) = Sorts.inter_sort (#2 classes); |
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211 |
|
45595 | 212 |
fun cert_class (TSig {classes = (_, algebra), ...}) c = |
213 |
if can (Graph.get_entry (Sorts.classes_of algebra)) c then c |
|
214 |
else raise TYPE ("Undeclared class: " ^ quote c, [], []); |
|
215 |
||
216 |
val cert_sort = map o cert_class; |
|
217 |
||
36447 | 218 |
fun minimize_sort (TSig {classes, ...}) = Sorts.minimize_sort (#2 classes); |
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build classes/arities: refer to operations in sorts.ML;
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219 |
|
32784 | 220 |
fun witness_sorts (TSig {classes, log_types, ...}) = |
19642 | 221 |
Sorts.witness_sorts (#2 classes) log_types; |
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222 |
|
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223 |
|
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224 |
(* certification mode *) |
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225 |
|
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226 |
datatype mode = Mode of {normalize: bool, logical: bool}; |
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227 |
|
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228 |
val mode_default = Mode {normalize = true, logical = true}; |
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229 |
val mode_syntax = Mode {normalize = true, logical = false}; |
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val mode_abbrev = Mode {normalize = false, logical = false}; |
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|
231 |
|
33519 | 232 |
structure Mode = Proof_Data |
24484 | 233 |
( |
234 |
type T = mode; |
|
235 |
fun init _ = mode_default; |
|
236 |
); |
|
237 |
||
238 |
val get_mode = Mode.get; |
|
239 |
fun set_mode mode = Mode.map (K mode); |
|
240 |
fun restore_mode ctxt = set_mode (get_mode ctxt); |
|
241 |
||
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242 |
|
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|
243 |
(* types *) |
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|
244 |
|
56025 | 245 |
val type_space = Name_Space.space_of_table o #types o rep_tsig; |
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added ProofContext.tsig_of -- proforma version for local name space only, not logical content;
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|
246 |
|
56025 | 247 |
fun type_alias naming binding name = map_tsig (fn (classes, default, types) => |
248 |
(classes, default, (Name_Space.alias_table naming binding name types))); |
|
35680 | 249 |
|
27313 | 250 |
|
251 |
fun undecl_type c = "Undeclared type constructor: " ^ quote c; |
|
252 |
||
59884 | 253 |
fun lookup_type (TSig {types, ...}) = Name_Space.lookup types; |
27313 | 254 |
|
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255 |
fun check_decl context (TSig {types, ...}) (c, pos) = |
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|
256 |
Name_Space.check_reports context types (c, [pos]); |
55841
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prefer Name_Space.check with its builtin reports (including completion);
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|
257 |
|
42468 | 258 |
fun the_decl tsig (c, pos) = |
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259 |
(case lookup_type tsig c of |
48992 | 260 |
NONE => error (undecl_type c ^ Position.here pos) |
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261 |
| SOME decl => decl); |
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|
262 |
|
27313 | 263 |
|
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major cleanup of tsig datastructures and extend/merge operations; fixes old bugs in classes/arities code; proper treatment of nonterminals and syntax-only types;
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|
264 |
(* certified types *) |
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major cleanup of tsig datastructures and extend/merge operations; fixes old bugs in classes/arities code; proper treatment of nonterminals and syntax-only types;
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|
265 |
|
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major cleanup of tsig datastructures and extend/merge operations; fixes old bugs in classes/arities code; proper treatment of nonterminals and syntax-only types;
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|
266 |
fun bad_nargs t = "Bad number of arguments for type constructor: " ^ quote t; |
14830
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removed norm_typ; improved output; refer to Pretty.pp;
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|
267 |
|
14998 | 268 |
local |
269 |
||
270 |
fun inst_typ env (Type (c, Ts)) = Type (c, map (inst_typ env) Ts) |
|
18957 | 271 |
| inst_typ env (T as TFree (x, _)) = the_default T (AList.lookup (op =) env x) |
14998 | 272 |
| inst_typ _ T = T; |
273 |
||
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|
274 |
in |
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type mode: models certification mode (default, syntax, abbrev);
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|
275 |
|
cb9236269af1
type mode: models certification mode (default, syntax, abbrev);
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|
276 |
fun cert_typ_mode (Mode {normalize, logical}) tsig ty = |
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277 |
let |
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major cleanup of tsig datastructures and extend/merge operations; fixes old bugs in classes/arities code; proper treatment of nonterminals and syntax-only types;
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|
278 |
fun err msg = raise TYPE (msg, [ty], []); |
0d984ee030a1
major cleanup of tsig datastructures and extend/merge operations; fixes old bugs in classes/arities code; proper treatment of nonterminals and syntax-only types;
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|
279 |
|
24274
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|
280 |
val check_logical = |
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|
281 |
if logical then fn c => err ("Illegal occurrence of syntactic type: " ^ quote c) |
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|
282 |
else fn _ => (); |
14989 | 283 |
|
284 |
fun cert (T as Type (c, Ts)) = |
|
285 |
let |
|
286 |
val Ts' = map cert Ts; |
|
287 |
fun nargs n = if length Ts <> n then err (bad_nargs c) else (); |
|
288 |
in |
|
42468 | 289 |
(case the_decl tsig (c, Position.none) of |
35359
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|
290 |
LogicalType n => (nargs n; Type (c, Ts')) |
3ec03a3cd9d0
provide direct access to the different kinds of type declarations;
wenzelm
parents:
34272
diff
changeset
|
291 |
| Abbreviation (vs, U, syn) => |
24274
cb9236269af1
type mode: models certification mode (default, syntax, abbrev);
wenzelm
parents:
23655
diff
changeset
|
292 |
(nargs (length vs); |
cb9236269af1
type mode: models certification mode (default, syntax, abbrev);
wenzelm
parents:
23655
diff
changeset
|
293 |
if syn then check_logical c else (); |
14993 | 294 |
if normalize then inst_typ (vs ~~ Ts') U |
14989 | 295 |
else Type (c, Ts')) |
35359
3ec03a3cd9d0
provide direct access to the different kinds of type declarations;
wenzelm
parents:
34272
diff
changeset
|
296 |
| Nonterminal => (nargs 0; check_logical c; T)) |
14790
0d984ee030a1
major cleanup of tsig datastructures and extend/merge operations; fixes old bugs in classes/arities code; proper treatment of nonterminals and syntax-only types;
wenzelm
parents:
13666
diff
changeset
|
297 |
end |
19515
9f650083da65
build classes/arities: refer to operations in sorts.ML;
wenzelm
parents:
19464
diff
changeset
|
298 |
| cert (TFree (x, S)) = TFree (x, cert_sort tsig S) |
14989 | 299 |
| cert (TVar (xi as (_, i), S)) = |
14993 | 300 |
if i < 0 then |
301 |
err ("Malformed type variable: " ^ quote (Term.string_of_vname xi)) |
|
19515
9f650083da65
build classes/arities: refer to operations in sorts.ML;
wenzelm
parents:
19464
diff
changeset
|
302 |
else TVar (xi, cert_sort tsig S); |
14790
0d984ee030a1
major cleanup of tsig datastructures and extend/merge operations; fixes old bugs in classes/arities code; proper treatment of nonterminals and syntax-only types;
wenzelm
parents:
13666
diff
changeset
|
303 |
|
14989 | 304 |
val ty' = cert ty; |
14993 | 305 |
in if ty = ty' then ty else ty' end; (*avoid copying of already normal type*) |
14830
faa4865ba1ce
removed norm_typ; improved output; refer to Pretty.pp;
wenzelm
parents:
14790
diff
changeset
|
306 |
|
24274
cb9236269af1
type mode: models certification mode (default, syntax, abbrev);
wenzelm
parents:
23655
diff
changeset
|
307 |
val cert_typ = cert_typ_mode mode_default; |
14790
0d984ee030a1
major cleanup of tsig datastructures and extend/merge operations; fixes old bugs in classes/arities code; proper treatment of nonterminals and syntax-only types;
wenzelm
parents:
13666
diff
changeset
|
308 |
|
14998 | 309 |
end; |
310 |
||
14790
0d984ee030a1
major cleanup of tsig datastructures and extend/merge operations; fixes old bugs in classes/arities code; proper treatment of nonterminals and syntax-only types;
wenzelm
parents:
13666
diff
changeset
|
311 |
|
19464 | 312 |
(* type arities *) |
313 |
||
27302 | 314 |
fun arity_number tsig a = |
315 |
(case lookup_type tsig a of |
|
33173
b8ca12f6681a
eliminated obsolete tags for types/consts -- now handled via name space, in strongly typed fashion;
wenzelm
parents:
33097
diff
changeset
|
316 |
SOME (LogicalType n) => n |
19464 | 317 |
| _ => error (undecl_type a)); |
318 |
||
319 |
fun arity_sorts _ tsig a [] = replicate (arity_number tsig a) [] |
|
61262
7bd1eb4b056e
tuned signature: eliminated pointless type Context.pretty;
wenzelm
parents:
59885
diff
changeset
|
320 |
| arity_sorts context (TSig {classes, ...}) a S = |
47005
421760a1efe7
maintain generic context naming in structure Name_Space (NB: empty = default_naming, init = local_naming);
wenzelm
parents:
46649
diff
changeset
|
321 |
Sorts.mg_domain (#2 classes) a S |
61262
7bd1eb4b056e
tuned signature: eliminated pointless type Context.pretty;
wenzelm
parents:
59885
diff
changeset
|
322 |
handle Sorts.CLASS_ERROR err => error (Sorts.class_error context err); |
19464 | 323 |
|
324 |
||
14790
0d984ee030a1
major cleanup of tsig datastructures and extend/merge operations; fixes old bugs in classes/arities code; proper treatment of nonterminals and syntax-only types;
wenzelm
parents:
13666
diff
changeset
|
325 |
|
0d984ee030a1
major cleanup of tsig datastructures and extend/merge operations; fixes old bugs in classes/arities code; proper treatment of nonterminals and syntax-only types;
wenzelm
parents:
13666
diff
changeset
|
326 |
(** special treatment of type vars **) |
0d984ee030a1
major cleanup of tsig datastructures and extend/merge operations; fixes old bugs in classes/arities code; proper treatment of nonterminals and syntax-only types;
wenzelm
parents:
13666
diff
changeset
|
327 |
|
36621
2fd4e2c76636
proof terms for strip_shyps, based on the version by krauss/schropp with some notable differences:
wenzelm
parents:
36450
diff
changeset
|
328 |
(* sort_of_atyp *) |
2fd4e2c76636
proof terms for strip_shyps, based on the version by krauss/schropp with some notable differences:
wenzelm
parents:
36450
diff
changeset
|
329 |
|
2fd4e2c76636
proof terms for strip_shyps, based on the version by krauss/schropp with some notable differences:
wenzelm
parents:
36450
diff
changeset
|
330 |
fun sort_of_atyp (TFree (_, S)) = S |
2fd4e2c76636
proof terms for strip_shyps, based on the version by krauss/schropp with some notable differences:
wenzelm
parents:
36450
diff
changeset
|
331 |
| sort_of_atyp (TVar (_, S)) = S |
2fd4e2c76636
proof terms for strip_shyps, based on the version by krauss/schropp with some notable differences:
wenzelm
parents:
36450
diff
changeset
|
332 |
| sort_of_atyp T = raise TYPE ("sort_of_atyp", [T], []); |
2fd4e2c76636
proof terms for strip_shyps, based on the version by krauss/schropp with some notable differences:
wenzelm
parents:
36450
diff
changeset
|
333 |
|
2fd4e2c76636
proof terms for strip_shyps, based on the version by krauss/schropp with some notable differences:
wenzelm
parents:
36450
diff
changeset
|
334 |
|
14790
0d984ee030a1
major cleanup of tsig datastructures and extend/merge operations; fixes old bugs in classes/arities code; proper treatment of nonterminals and syntax-only types;
wenzelm
parents:
13666
diff
changeset
|
335 |
(* strip_sorts *) |
0d984ee030a1
major cleanup of tsig datastructures and extend/merge operations; fixes old bugs in classes/arities code; proper treatment of nonterminals and syntax-only types;
wenzelm
parents:
13666
diff
changeset
|
336 |
|
49687
4b9034f089eb
use explicit Type.strip_sorts_dummy to suppress sort constraints in output;
wenzelm
parents:
48992
diff
changeset
|
337 |
val strip_sorts = map_atyps |
4b9034f089eb
use explicit Type.strip_sorts_dummy to suppress sort constraints in output;
wenzelm
parents:
48992
diff
changeset
|
338 |
(fn TFree (x, _) => TFree (x, []) |
4b9034f089eb
use explicit Type.strip_sorts_dummy to suppress sort constraints in output;
wenzelm
parents:
48992
diff
changeset
|
339 |
| TVar (xi, _) => TVar (xi, [])); |
4b9034f089eb
use explicit Type.strip_sorts_dummy to suppress sort constraints in output;
wenzelm
parents:
48992
diff
changeset
|
340 |
|
4b9034f089eb
use explicit Type.strip_sorts_dummy to suppress sort constraints in output;
wenzelm
parents:
48992
diff
changeset
|
341 |
val strip_sorts_dummy = map_atyps |
4b9034f089eb
use explicit Type.strip_sorts_dummy to suppress sort constraints in output;
wenzelm
parents:
48992
diff
changeset
|
342 |
(fn TFree (x, _) => TFree (x, dummyS) |
4b9034f089eb
use explicit Type.strip_sorts_dummy to suppress sort constraints in output;
wenzelm
parents:
48992
diff
changeset
|
343 |
| TVar (xi, _) => TVar (xi, dummyS)); |
14790
0d984ee030a1
major cleanup of tsig datastructures and extend/merge operations; fixes old bugs in classes/arities code; proper treatment of nonterminals and syntax-only types;
wenzelm
parents:
13666
diff
changeset
|
344 |
|
0d984ee030a1
major cleanup of tsig datastructures and extend/merge operations; fixes old bugs in classes/arities code; proper treatment of nonterminals and syntax-only types;
wenzelm
parents:
13666
diff
changeset
|
345 |
|
0d984ee030a1
major cleanup of tsig datastructures and extend/merge operations; fixes old bugs in classes/arities code; proper treatment of nonterminals and syntax-only types;
wenzelm
parents:
13666
diff
changeset
|
346 |
(* no_tvars *) |
621 | 347 |
|
348 |
fun no_tvars T = |
|
29275
9fa69e3858d6
moved old add_type_XXX, add_term_XXX etc. to structure OldTerm;
wenzelm
parents:
29269
diff
changeset
|
349 |
(case Term.add_tvarsT T [] of [] => T |
12501 | 350 |
| vs => raise TYPE ("Illegal schematic type variable(s): " ^ |
29275
9fa69e3858d6
moved old add_type_XXX, add_term_XXX etc. to structure OldTerm;
wenzelm
parents:
29269
diff
changeset
|
351 |
commas_quote (map (Term.string_of_vname o #1) (rev vs)), [T], [])); |
621 | 352 |
|
7641 | 353 |
|
35845
e5980f0ad025
renamed varify/unvarify operations to varify_global/unvarify_global to emphasize that these only work in a global situation;
wenzelm
parents:
35680
diff
changeset
|
354 |
(* varify_global *) |
621 | 355 |
|
35845
e5980f0ad025
renamed varify/unvarify operations to varify_global/unvarify_global to emphasize that these only work in a global situation;
wenzelm
parents:
35680
diff
changeset
|
356 |
fun varify_global fixed t = |
621 | 357 |
let |
19305 | 358 |
val fs = Term.fold_types (Term.fold_atyps |
359 |
(fn TFree v => if member (op =) fixed v then I else insert (op =) v | _ => I)) t []; |
|
29260 | 360 |
val used = Name.context |
361 |
|> fold_types (fold_atyps (fn TVar ((a, _), _) => Name.declare a | _ => I)) t; |
|
43326
47cf4bc789aa
simplified Name.variant -- discontinued builtin fold_map;
wenzelm
parents:
43324
diff
changeset
|
362 |
val fmap = fs ~~ map (rpair 0) (#1 (fold_map Name.variant (map fst fs) used)); |
32784 | 363 |
fun thaw (f as (_, S)) = |
17184 | 364 |
(case AList.lookup (op =) fmap f of |
15531 | 365 |
NONE => TFree f |
16946 | 366 |
| SOME xi => TVar (xi, S)); |
21116 | 367 |
in (fmap, map_types (map_type_tfree thaw) t) end; |
2964 | 368 |
|
369 |
||
7641 | 370 |
(* freeze_thaw: freeze TVars in a term; return the "thaw" inverse *) |
3411
163f8f4a42d7
Removal of freeze_vars and thaw_vars. New freeze_thaw
paulson
parents:
3175
diff
changeset
|
371 |
|
7641 | 372 |
local |
373 |
||
44116
c70257b4cb7e
avoid OldTerm operations -- with subtle changes of semantics;
wenzelm
parents:
43552
diff
changeset
|
374 |
fun new_name ix (pairs, used) = |
43324
2b47822868e4
discontinued Name.variant to emphasize that this is old-style / indirect;
wenzelm
parents:
42468
diff
changeset
|
375 |
let val v = singleton (Name.variant_list used) (string_of_indexname ix) |
16289 | 376 |
in ((ix, v) :: pairs, v :: used) end; |
621 | 377 |
|
16289 | 378 |
fun freeze_one alist (ix, sort) = |
17184 | 379 |
TFree (the (AList.lookup (op =) alist ix), sort) |
51930
52fd62618631
prefer explicitly qualified exceptions, which is particular important for robust handlers;
wenzelm
parents:
51701
diff
changeset
|
380 |
handle Option.Option => |
3790 | 381 |
raise TYPE ("Failure during freezing of ?" ^ string_of_indexname ix, [], []); |
2964 | 382 |
|
17184 | 383 |
fun thaw_one alist (a, sort) = TVar (the (AList.lookup (op =) alist a), sort) |
51930
52fd62618631
prefer explicitly qualified exceptions, which is particular important for robust handlers;
wenzelm
parents:
51701
diff
changeset
|
384 |
handle Option.Option => TFree (a, sort); |
416 | 385 |
|
10495 | 386 |
in |
387 |
||
33832 | 388 |
fun legacy_freeze_thaw_type T = |
7641 | 389 |
let |
44116
c70257b4cb7e
avoid OldTerm operations -- with subtle changes of semantics;
wenzelm
parents:
43552
diff
changeset
|
390 |
val used = Term.add_tfree_namesT T []; |
c70257b4cb7e
avoid OldTerm operations -- with subtle changes of semantics;
wenzelm
parents:
43552
diff
changeset
|
391 |
val (alist, _) = fold_rev new_name (map #1 (Term.add_tvarsT T [])) ([], used); |
7641 | 392 |
in (map_type_tvar (freeze_one alist) T, map_type_tfree (thaw_one (map swap alist))) end; |
393 |
||
33832 | 394 |
val legacy_freeze_type = #1 o legacy_freeze_thaw_type; |
16289 | 395 |
|
33832 | 396 |
fun legacy_freeze_thaw t = |
7641 | 397 |
let |
44116
c70257b4cb7e
avoid OldTerm operations -- with subtle changes of semantics;
wenzelm
parents:
43552
diff
changeset
|
398 |
val used = Term.add_tfree_names t []; |
c70257b4cb7e
avoid OldTerm operations -- with subtle changes of semantics;
wenzelm
parents:
43552
diff
changeset
|
399 |
val (alist, _) = fold_rev new_name (map #1 (Term.add_tvars t [])) ([], used); |
7641 | 400 |
in |
401 |
(case alist of |
|
402 |
[] => (t, fn x => x) (*nothing to do!*) |
|
20548
8ef25fe585a8
renamed Term.map_term_types to Term.map_types (cf. Term.fold_types);
wenzelm
parents:
20071
diff
changeset
|
403 |
| _ => (map_types (map_type_tvar (freeze_one alist)) t, |
8ef25fe585a8
renamed Term.map_term_types to Term.map_types (cf. Term.fold_types);
wenzelm
parents:
20071
diff
changeset
|
404 |
map_types (map_type_tfree (thaw_one (map swap alist))))) |
7641 | 405 |
end; |
406 |
||
33832 | 407 |
val legacy_freeze = #1 o legacy_freeze_thaw; |
16289 | 408 |
|
7641 | 409 |
end; |
410 |
||
256 | 411 |
|
412 |
||
14790
0d984ee030a1
major cleanup of tsig datastructures and extend/merge operations; fixes old bugs in classes/arities code; proper treatment of nonterminals and syntax-only types;
wenzelm
parents:
13666
diff
changeset
|
413 |
(** matching and unification of types **) |
8899 | 414 |
|
15797 | 415 |
type tyenv = (sort * typ) Vartab.table; |
256 | 416 |
|
51701
1e29891759c4
tuned exceptions -- avoid composing error messages in low-level situations;
wenzelm
parents:
50201
diff
changeset
|
417 |
fun tvar_clash ixn S S' = |
1e29891759c4
tuned exceptions -- avoid composing error messages in low-level situations;
wenzelm
parents:
50201
diff
changeset
|
418 |
raise TYPE ("Type variable has two distinct sorts", [TVar (ixn, S), TVar (ixn, S')], []); |
0 | 419 |
|
26327 | 420 |
fun lookup tye (ixn, S) = |
17412 | 421 |
(case Vartab.lookup tye ixn of |
15797 | 422 |
NONE => NONE |
16289 | 423 |
| SOME (S', T) => if S = S' then SOME T else tvar_clash ixn S S'); |
424 |
||
0 | 425 |
|
14790
0d984ee030a1
major cleanup of tsig datastructures and extend/merge operations; fixes old bugs in classes/arities code; proper treatment of nonterminals and syntax-only types;
wenzelm
parents:
13666
diff
changeset
|
426 |
(* matching *) |
0 | 427 |
|
2964 | 428 |
exception TYPE_MATCH; |
0 | 429 |
|
16946 | 430 |
fun typ_match tsig = |
2964 | 431 |
let |
58942
97f0ba373b1a
recovered type matching, which was broken in 8a765db7e0f8 (see also 8a765db7e0f8, 2db1d3d2ed54);
wenzelm
parents:
56139
diff
changeset
|
432 |
fun match (TVar (v, S), T) subs = |
26327 | 433 |
(case lookup subs (v, S) of |
15531 | 434 |
NONE => |
58942
97f0ba373b1a
recovered type matching, which was broken in 8a765db7e0f8 (see also 8a765db7e0f8, 2db1d3d2ed54);
wenzelm
parents:
56139
diff
changeset
|
435 |
if of_sort tsig (T, S) then Vartab.update_new (v, (S, T)) subs |
14993 | 436 |
else raise TYPE_MATCH |
15531 | 437 |
| SOME U => if U = T then subs else raise TYPE_MATCH) |
16340 | 438 |
| match (Type (a, Ts), Type (b, Us)) subs = |
2964 | 439 |
if a <> b then raise TYPE_MATCH |
16885 | 440 |
else matches (Ts, Us) subs |
16340 | 441 |
| match (TFree x, TFree y) subs = |
2964 | 442 |
if x = y then subs else raise TYPE_MATCH |
16885 | 443 |
| match _ _ = raise TYPE_MATCH |
444 |
and matches (T :: Ts, U :: Us) subs = matches (Ts, Us) (match (T, U) subs) |
|
445 |
| matches _ subs = subs; |
|
16946 | 446 |
in match end; |
0 | 447 |
|
14790
0d984ee030a1
major cleanup of tsig datastructures and extend/merge operations; fixes old bugs in classes/arities code; proper treatment of nonterminals and syntax-only types;
wenzelm
parents:
13666
diff
changeset
|
448 |
fun typ_instance tsig (T, U) = |
16946 | 449 |
(typ_match tsig (U, T) Vartab.empty; true) handle TYPE_MATCH => false; |
450 |
||
451 |
(*purely structural matching*) |
|
58942
97f0ba373b1a
recovered type matching, which was broken in 8a765db7e0f8 (see also 8a765db7e0f8, 2db1d3d2ed54);
wenzelm
parents:
56139
diff
changeset
|
452 |
fun raw_match (TVar (v, S), T) subs = |
26327 | 453 |
(case lookup subs (v, S) of |
58942
97f0ba373b1a
recovered type matching, which was broken in 8a765db7e0f8 (see also 8a765db7e0f8, 2db1d3d2ed54);
wenzelm
parents:
56139
diff
changeset
|
454 |
NONE => Vartab.update_new (v, (S, T)) subs |
16946 | 455 |
| SOME U => if U = T then subs else raise TYPE_MATCH) |
456 |
| raw_match (Type (a, Ts), Type (b, Us)) subs = |
|
457 |
if a <> b then raise TYPE_MATCH |
|
458 |
else raw_matches (Ts, Us) subs |
|
459 |
| raw_match (TFree x, TFree y) subs = |
|
460 |
if x = y then subs else raise TYPE_MATCH |
|
461 |
| raw_match _ _ = raise TYPE_MATCH |
|
462 |
and raw_matches (T :: Ts, U :: Us) subs = raw_matches (Ts, Us) (raw_match (T, U) subs) |
|
19694 | 463 |
| raw_matches ([], []) subs = subs |
464 |
| raw_matches _ _ = raise TYPE_MATCH; |
|
16946 | 465 |
|
56050
fdccbb97915a
minor performance tuning via fast matching filter;
wenzelm
parents:
56025
diff
changeset
|
466 |
(*fast matching filter*) |
fdccbb97915a
minor performance tuning via fast matching filter;
wenzelm
parents:
56025
diff
changeset
|
467 |
fun could_match (Type (a, Ts), Type (b, Us)) = a = b andalso could_matches (Ts, Us) |
fdccbb97915a
minor performance tuning via fast matching filter;
wenzelm
parents:
56025
diff
changeset
|
468 |
| could_match (TFree (a, _), TFree (b, _)) = a = b |
fdccbb97915a
minor performance tuning via fast matching filter;
wenzelm
parents:
56025
diff
changeset
|
469 |
| could_match (TVar _, _) = true |
fdccbb97915a
minor performance tuning via fast matching filter;
wenzelm
parents:
56025
diff
changeset
|
470 |
| could_match _ = false |
fdccbb97915a
minor performance tuning via fast matching filter;
wenzelm
parents:
56025
diff
changeset
|
471 |
and could_matches (T :: Ts, U :: Us) = could_match (T, U) andalso could_matches (Ts, Us) |
fdccbb97915a
minor performance tuning via fast matching filter;
wenzelm
parents:
56025
diff
changeset
|
472 |
| could_matches ([], []) = true |
fdccbb97915a
minor performance tuning via fast matching filter;
wenzelm
parents:
56025
diff
changeset
|
473 |
| could_matches _ = false; |
fdccbb97915a
minor performance tuning via fast matching filter;
wenzelm
parents:
56025
diff
changeset
|
474 |
|
16946 | 475 |
fun raw_instance (T, U) = |
56050
fdccbb97915a
minor performance tuning via fast matching filter;
wenzelm
parents:
56025
diff
changeset
|
476 |
if could_match (U, T) then |
fdccbb97915a
minor performance tuning via fast matching filter;
wenzelm
parents:
56025
diff
changeset
|
477 |
(raw_match (U, T) Vartab.empty; true) handle TYPE_MATCH => false |
fdccbb97915a
minor performance tuning via fast matching filter;
wenzelm
parents:
56025
diff
changeset
|
478 |
else false; |
2964 | 479 |
|
0 | 480 |
|
14790
0d984ee030a1
major cleanup of tsig datastructures and extend/merge operations; fixes old bugs in classes/arities code; proper treatment of nonterminals and syntax-only types;
wenzelm
parents:
13666
diff
changeset
|
481 |
(* unification *) |
2964 | 482 |
|
0 | 483 |
exception TUNIFY; |
484 |
||
26641 | 485 |
(*occurs check*) |
2964 | 486 |
fun occurs v tye = |
487 |
let |
|
488 |
fun occ (Type (_, Ts)) = exists occ Ts |
|
489 |
| occ (TFree _) = false |
|
15797 | 490 |
| occ (TVar (w, S)) = |
29269
5c25a2012975
moved term order operations to structure TermOrd (cf. Pure/term_ord.ML);
wenzelm
parents:
29260
diff
changeset
|
491 |
Term.eq_ix (v, w) orelse |
26327 | 492 |
(case lookup tye (w, S) of |
15531 | 493 |
NONE => false |
494 |
| SOME U => occ U); |
|
0 | 495 |
in occ end; |
496 |
||
14790
0d984ee030a1
major cleanup of tsig datastructures and extend/merge operations; fixes old bugs in classes/arities code; proper treatment of nonterminals and syntax-only types;
wenzelm
parents:
13666
diff
changeset
|
497 |
(*chase variable assignments; if devar returns a type var then it must be unassigned*) |
16885 | 498 |
fun devar tye (T as TVar v) = |
26327 | 499 |
(case lookup tye v of |
16885 | 500 |
SOME U => devar tye U |
15531 | 501 |
| NONE => T) |
32784 | 502 |
| devar _ T = T; |
0 | 503 |
|
17804 | 504 |
(*order-sorted unification*) |
32784 | 505 |
fun unify (TSig {classes = (_, classes), ...}) TU (tyenv, maxidx) = |
2964 | 506 |
let |
32738 | 507 |
val tyvar_count = Unsynchronized.ref maxidx; |
508 |
fun gen_tyvar S = TVar ((Name.aT, Unsynchronized.inc tyvar_count), S); |
|
2964 | 509 |
|
19642 | 510 |
fun mg_domain a S = Sorts.mg_domain classes a S |
511 |
handle Sorts.CLASS_ERROR _ => raise TUNIFY; |
|
2964 | 512 |
|
16885 | 513 |
fun meet (_, []) tye = tye |
514 |
| meet (TVar (xi, S'), S) tye = |
|
14790
0d984ee030a1
major cleanup of tsig datastructures and extend/merge operations; fixes old bugs in classes/arities code; proper treatment of nonterminals and syntax-only types;
wenzelm
parents:
13666
diff
changeset
|
515 |
if Sorts.sort_le classes (S', S) then tye |
17412 | 516 |
else Vartab.update_new |
17221 | 517 |
(xi, (S', gen_tyvar (Sorts.inter_sort classes (S', S)))) tye |
16885 | 518 |
| meet (TFree (_, S'), S) tye = |
14790
0d984ee030a1
major cleanup of tsig datastructures and extend/merge operations; fixes old bugs in classes/arities code; proper treatment of nonterminals and syntax-only types;
wenzelm
parents:
13666
diff
changeset
|
519 |
if Sorts.sort_le classes (S', S) then tye |
2964 | 520 |
else raise TUNIFY |
16885 | 521 |
| meet (Type (a, Ts), S) tye = meets (Ts, mg_domain a S) tye |
522 |
and meets (T :: Ts, S :: Ss) tye = meets (Ts, Ss) (meet (devar tye T, S) tye) |
|
523 |
| meets _ tye = tye; |
|
2964 | 524 |
|
16885 | 525 |
fun unif (ty1, ty2) tye = |
526 |
(case (devar tye ty1, devar tye ty2) of |
|
2964 | 527 |
(T as TVar (v, S1), U as TVar (w, S2)) => |
29269
5c25a2012975
moved term order operations to structure TermOrd (cf. Pure/term_ord.ML);
wenzelm
parents:
29260
diff
changeset
|
528 |
if Term.eq_ix (v, w) then |
15797 | 529 |
if S1 = S2 then tye else tvar_clash v S1 S2 |
14790
0d984ee030a1
major cleanup of tsig datastructures and extend/merge operations; fixes old bugs in classes/arities code; proper treatment of nonterminals and syntax-only types;
wenzelm
parents:
13666
diff
changeset
|
530 |
else if Sorts.sort_le classes (S1, S2) then |
17412 | 531 |
Vartab.update_new (w, (S2, T)) tye |
14790
0d984ee030a1
major cleanup of tsig datastructures and extend/merge operations; fixes old bugs in classes/arities code; proper treatment of nonterminals and syntax-only types;
wenzelm
parents:
13666
diff
changeset
|
532 |
else if Sorts.sort_le classes (S2, S1) then |
17412 | 533 |
Vartab.update_new (v, (S1, U)) tye |
2964 | 534 |
else |
14790
0d984ee030a1
major cleanup of tsig datastructures and extend/merge operations; fixes old bugs in classes/arities code; proper treatment of nonterminals and syntax-only types;
wenzelm
parents:
13666
diff
changeset
|
535 |
let val S = gen_tyvar (Sorts.inter_sort classes (S1, S2)) in |
17412 | 536 |
Vartab.update_new (v, (S1, S)) (Vartab.update_new (w, (S2, S)) tye) |
2964 | 537 |
end |
538 |
| (TVar (v, S), T) => |
|
539 |
if occurs v tye T then raise TUNIFY |
|
17412 | 540 |
else meet (T, S) (Vartab.update_new (v, (S, T)) tye) |
2964 | 541 |
| (T, TVar (v, S)) => |
542 |
if occurs v tye T then raise TUNIFY |
|
17412 | 543 |
else meet (T, S) (Vartab.update_new (v, (S, T)) tye) |
2964 | 544 |
| (Type (a, Ts), Type (b, Us)) => |
545 |
if a <> b then raise TUNIFY |
|
16885 | 546 |
else unifs (Ts, Us) tye |
547 |
| (T, U) => if T = U then tye else raise TUNIFY) |
|
548 |
and unifs (T :: Ts, U :: Us) tye = unifs (Ts, Us) (unif (T, U) tye) |
|
549 |
| unifs _ tye = tye; |
|
550 |
in (unif TU tyenv, ! tyvar_count) end; |
|
0 | 551 |
|
16946 | 552 |
(*purely structural unification*) |
553 |
fun raw_unify (ty1, ty2) tye = |
|
554 |
(case (devar tye ty1, devar tye ty2) of |
|
32784 | 555 |
(T as TVar (v, S1), TVar (w, S2)) => |
29269
5c25a2012975
moved term order operations to structure TermOrd (cf. Pure/term_ord.ML);
wenzelm
parents:
29260
diff
changeset
|
556 |
if Term.eq_ix (v, w) then |
16946 | 557 |
if S1 = S2 then tye else tvar_clash v S1 S2 |
17412 | 558 |
else Vartab.update_new (w, (S2, T)) tye |
16946 | 559 |
| (TVar (v, S), T) => |
560 |
if occurs v tye T then raise TUNIFY |
|
17412 | 561 |
else Vartab.update_new (v, (S, T)) tye |
16946 | 562 |
| (T, TVar (v, S)) => |
563 |
if occurs v tye T then raise TUNIFY |
|
17412 | 564 |
else Vartab.update_new (v, (S, T)) tye |
16946 | 565 |
| (Type (a, Ts), Type (b, Us)) => |
566 |
if a <> b then raise TUNIFY |
|
567 |
else raw_unifys (Ts, Us) tye |
|
568 |
| (T, U) => if T = U then tye else raise TUNIFY) |
|
569 |
and raw_unifys (T :: Ts, U :: Us) tye = raw_unifys (Ts, Us) (raw_unify (T, U) tye) |
|
19696 | 570 |
| raw_unifys ([], []) tye = tye |
571 |
| raw_unifys _ _ = raise TUNIFY; |
|
16946 | 572 |
|
17804 | 573 |
(*fast unification filter*) |
574 |
fun could_unify (Type (a, Ts), Type (b, Us)) = a = b andalso could_unifys (Ts, Us) |
|
575 |
| could_unify (TFree (a, _), TFree (b, _)) = a = b |
|
576 |
| could_unify (TVar _, _) = true |
|
577 |
| could_unify (_, TVar _) = true |
|
578 |
| could_unify _ = false |
|
579 |
and could_unifys (T :: Ts, U :: Us) = could_unify (T, U) andalso could_unifys (Ts, Us) |
|
19696 | 580 |
| could_unifys ([], []) = true |
581 |
| could_unifys _ = false; |
|
450 | 582 |
|
17804 | 583 |
(*equality with respect to a type environment*) |
58949
e9559088ba29
clarified name of Type.unified, to emphasize its connection to the "unify" family;
wenzelm
parents:
58942
diff
changeset
|
584 |
fun unified tye = |
e9559088ba29
clarified name of Type.unified, to emphasize its connection to the "unify" family;
wenzelm
parents:
58942
diff
changeset
|
585 |
let |
e9559088ba29
clarified name of Type.unified, to emphasize its connection to the "unify" family;
wenzelm
parents:
58942
diff
changeset
|
586 |
fun unif (T, T') = |
e9559088ba29
clarified name of Type.unified, to emphasize its connection to the "unify" family;
wenzelm
parents:
58942
diff
changeset
|
587 |
(case (devar tye T, devar tye T') of |
e9559088ba29
clarified name of Type.unified, to emphasize its connection to the "unify" family;
wenzelm
parents:
58942
diff
changeset
|
588 |
(Type (s, Ts), Type (s', Ts')) => s = s' andalso unifs (Ts, Ts') |
e9559088ba29
clarified name of Type.unified, to emphasize its connection to the "unify" family;
wenzelm
parents:
58942
diff
changeset
|
589 |
| (U, U') => U = U') |
e9559088ba29
clarified name of Type.unified, to emphasize its connection to the "unify" family;
wenzelm
parents:
58942
diff
changeset
|
590 |
and unifs ([], []) = true |
e9559088ba29
clarified name of Type.unified, to emphasize its connection to the "unify" family;
wenzelm
parents:
58942
diff
changeset
|
591 |
| unifs (T :: Ts, T' :: Ts') = unif (T', T') andalso unifs (Ts, Ts') |
e9559088ba29
clarified name of Type.unified, to emphasize its connection to the "unify" family;
wenzelm
parents:
58942
diff
changeset
|
592 |
| unifs _ = false; |
e9559088ba29
clarified name of Type.unified, to emphasize its connection to the "unify" family;
wenzelm
parents:
58942
diff
changeset
|
593 |
in if Vartab.is_empty tye then op = else unif end; |
32030 | 594 |
|
450 | 595 |
|
0 | 596 |
|
14790
0d984ee030a1
major cleanup of tsig datastructures and extend/merge operations; fixes old bugs in classes/arities code; proper treatment of nonterminals and syntax-only types;
wenzelm
parents:
13666
diff
changeset
|
597 |
(** extend and merge type signatures **) |
0d984ee030a1
major cleanup of tsig datastructures and extend/merge operations; fixes old bugs in classes/arities code; proper treatment of nonterminals and syntax-only types;
wenzelm
parents:
13666
diff
changeset
|
598 |
|
0d984ee030a1
major cleanup of tsig datastructures and extend/merge operations; fixes old bugs in classes/arities code; proper treatment of nonterminals and syntax-only types;
wenzelm
parents:
13666
diff
changeset
|
599 |
(* classes *) |
0d984ee030a1
major cleanup of tsig datastructures and extend/merge operations; fixes old bugs in classes/arities code; proper treatment of nonterminals and syntax-only types;
wenzelm
parents:
13666
diff
changeset
|
600 |
|
47005
421760a1efe7
maintain generic context naming in structure Name_Space (NB: empty = default_naming, init = local_naming);
wenzelm
parents:
46649
diff
changeset
|
601 |
fun add_class context (c, cs) tsig = |
19642 | 602 |
tsig |> map_tsig (fn ((space, classes), default, types) => |
16370
033d890fe91f
name space of classes and types maintained in tsig;
wenzelm
parents:
16340
diff
changeset
|
603 |
let |
033d890fe91f
name space of classes and types maintained in tsig;
wenzelm
parents:
16340
diff
changeset
|
604 |
val cs' = map (cert_class tsig) cs |
033d890fe91f
name space of classes and types maintained in tsig;
wenzelm
parents:
16340
diff
changeset
|
605 |
handle TYPE (msg, _, _) => error msg; |
41254
78c3e472bb35
extra checking of name bindings for classes, types, consts;
wenzelm
parents:
39997
diff
changeset
|
606 |
val _ = Binding.check c; |
47005
421760a1efe7
maintain generic context naming in structure Name_Space (NB: empty = default_naming, init = local_naming);
wenzelm
parents:
46649
diff
changeset
|
607 |
val (c', space') = space |> Name_Space.declare context true c; |
61262
7bd1eb4b056e
tuned signature: eliminated pointless type Context.pretty;
wenzelm
parents:
59885
diff
changeset
|
608 |
val classes' = classes |> Sorts.add_class context (c', cs'); |
19642 | 609 |
in ((space', classes'), default, types) end); |
14790
0d984ee030a1
major cleanup of tsig datastructures and extend/merge operations; fixes old bugs in classes/arities code; proper treatment of nonterminals and syntax-only types;
wenzelm
parents:
13666
diff
changeset
|
610 |
|
26669 | 611 |
fun hide_class fully c = map_tsig (fn ((space, classes), default, types) => |
33095
bbd52d2f8696
renamed NameSpace to Name_Space -- also to emphasize its subtle change in semantics;
wenzelm
parents:
33094
diff
changeset
|
612 |
((Name_Space.hide fully c space, classes), default, types)); |
16370
033d890fe91f
name space of classes and types maintained in tsig;
wenzelm
parents:
16340
diff
changeset
|
613 |
|
14790
0d984ee030a1
major cleanup of tsig datastructures and extend/merge operations; fixes old bugs in classes/arities code; proper treatment of nonterminals and syntax-only types;
wenzelm
parents:
13666
diff
changeset
|
614 |
|
19515
9f650083da65
build classes/arities: refer to operations in sorts.ML;
wenzelm
parents:
19464
diff
changeset
|
615 |
(* arities *) |
9f650083da65
build classes/arities: refer to operations in sorts.ML;
wenzelm
parents:
19464
diff
changeset
|
616 |
|
61262
7bd1eb4b056e
tuned signature: eliminated pointless type Context.pretty;
wenzelm
parents:
59885
diff
changeset
|
617 |
fun add_arity context (t, Ss, S) tsig = tsig |> map_tsig (fn ((space, classes), default, types) => |
19515
9f650083da65
build classes/arities: refer to operations in sorts.ML;
wenzelm
parents:
19464
diff
changeset
|
618 |
let |
9f650083da65
build classes/arities: refer to operations in sorts.ML;
wenzelm
parents:
19464
diff
changeset
|
619 |
val _ = |
27302 | 620 |
(case lookup_type tsig t of |
33173
b8ca12f6681a
eliminated obsolete tags for types/consts -- now handled via name space, in strongly typed fashion;
wenzelm
parents:
33097
diff
changeset
|
621 |
SOME (LogicalType n) => if length Ss <> n then error (bad_nargs t) else () |
33094
ef0d77b1e687
eliminated separate stamp -- NameSpace.define/merge etc. ensure uniqueness already;
wenzelm
parents:
32784
diff
changeset
|
622 |
| SOME _ => error ("Logical type constructor expected: " ^ quote t) |
19515
9f650083da65
build classes/arities: refer to operations in sorts.ML;
wenzelm
parents:
19464
diff
changeset
|
623 |
| NONE => error (undecl_type t)); |
9f650083da65
build classes/arities: refer to operations in sorts.ML;
wenzelm
parents:
19464
diff
changeset
|
624 |
val (Ss', S') = (map (cert_sort tsig) Ss, cert_sort tsig S) |
9f650083da65
build classes/arities: refer to operations in sorts.ML;
wenzelm
parents:
19464
diff
changeset
|
625 |
handle TYPE (msg, _, _) => error msg; |
61262
7bd1eb4b056e
tuned signature: eliminated pointless type Context.pretty;
wenzelm
parents:
59885
diff
changeset
|
626 |
val classes' = classes |> Sorts.add_arities context ((t, map (fn c' => (c', Ss')) S')); |
19642 | 627 |
in ((space, classes'), default, types) end); |
19515
9f650083da65
build classes/arities: refer to operations in sorts.ML;
wenzelm
parents:
19464
diff
changeset
|
628 |
|
9f650083da65
build classes/arities: refer to operations in sorts.ML;
wenzelm
parents:
19464
diff
changeset
|
629 |
|
9f650083da65
build classes/arities: refer to operations in sorts.ML;
wenzelm
parents:
19464
diff
changeset
|
630 |
(* classrel *) |
9f650083da65
build classes/arities: refer to operations in sorts.ML;
wenzelm
parents:
19464
diff
changeset
|
631 |
|
61262
7bd1eb4b056e
tuned signature: eliminated pointless type Context.pretty;
wenzelm
parents:
59885
diff
changeset
|
632 |
fun add_classrel context rel tsig = |
19642 | 633 |
tsig |> map_tsig (fn ((space, classes), default, types) => |
19515
9f650083da65
build classes/arities: refer to operations in sorts.ML;
wenzelm
parents:
19464
diff
changeset
|
634 |
let |
59058
a78612c67ec0
renamed "pairself" to "apply2", in accordance to @{apply 2};
wenzelm
parents:
58949
diff
changeset
|
635 |
val rel' = apply2 (cert_class tsig) rel |
19515
9f650083da65
build classes/arities: refer to operations in sorts.ML;
wenzelm
parents:
19464
diff
changeset
|
636 |
handle TYPE (msg, _, _) => error msg; |
61262
7bd1eb4b056e
tuned signature: eliminated pointless type Context.pretty;
wenzelm
parents:
59885
diff
changeset
|
637 |
val classes' = classes |> Sorts.add_classrel context rel'; |
19642 | 638 |
in ((space, classes'), default, types) end); |
19515
9f650083da65
build classes/arities: refer to operations in sorts.ML;
wenzelm
parents:
19464
diff
changeset
|
639 |
|
9f650083da65
build classes/arities: refer to operations in sorts.ML;
wenzelm
parents:
19464
diff
changeset
|
640 |
|
14790
0d984ee030a1
major cleanup of tsig datastructures and extend/merge operations; fixes old bugs in classes/arities code; proper treatment of nonterminals and syntax-only types;
wenzelm
parents:
13666
diff
changeset
|
641 |
(* default sort *) |
0d984ee030a1
major cleanup of tsig datastructures and extend/merge operations; fixes old bugs in classes/arities code; proper treatment of nonterminals and syntax-only types;
wenzelm
parents:
13666
diff
changeset
|
642 |
|
19642 | 643 |
fun set_defsort S tsig = tsig |> map_tsig (fn (classes, _, types) => |
644 |
(classes, cert_sort tsig S handle TYPE (msg, _, _) => error msg, types)); |
|
0 | 645 |
|
646 |
||
14790
0d984ee030a1
major cleanup of tsig datastructures and extend/merge operations; fixes old bugs in classes/arities code; proper treatment of nonterminals and syntax-only types;
wenzelm
parents:
13666
diff
changeset
|
647 |
(* types *) |
0d984ee030a1
major cleanup of tsig datastructures and extend/merge operations; fixes old bugs in classes/arities code; proper treatment of nonterminals and syntax-only types;
wenzelm
parents:
13666
diff
changeset
|
648 |
|
0d984ee030a1
major cleanup of tsig datastructures and extend/merge operations; fixes old bugs in classes/arities code; proper treatment of nonterminals and syntax-only types;
wenzelm
parents:
13666
diff
changeset
|
649 |
local |
0d984ee030a1
major cleanup of tsig datastructures and extend/merge operations; fixes old bugs in classes/arities code; proper treatment of nonterminals and syntax-only types;
wenzelm
parents:
13666
diff
changeset
|
650 |
|
47005
421760a1efe7
maintain generic context naming in structure Name_Space (NB: empty = default_naming, init = local_naming);
wenzelm
parents:
46649
diff
changeset
|
651 |
fun new_decl context (c, decl) types = |
421760a1efe7
maintain generic context naming in structure Name_Space (NB: empty = default_naming, init = local_naming);
wenzelm
parents:
46649
diff
changeset
|
652 |
(Binding.check c; #2 (Name_Space.define context true (c, decl) types)); |
14790
0d984ee030a1
major cleanup of tsig datastructures and extend/merge operations; fixes old bugs in classes/arities code; proper treatment of nonterminals and syntax-only types;
wenzelm
parents:
13666
diff
changeset
|
653 |
|
19642 | 654 |
fun map_types f = map_tsig (fn (classes, default, types) => |
19579
b802d1804b77
replaced Sorts.DOMAIN by general Sorts.CLASS_ERROR;
wenzelm
parents:
19530
diff
changeset
|
655 |
let |
56025 | 656 |
val types' = f types; |
657 |
val _ = |
|
59885
3470a265d404
subtle change of long-standing name space policy: unknown entries are treated as hidden, consequently "private" is understood in the strict sense;
wenzelm
parents:
59884
diff
changeset
|
658 |
not (Name_Space.defined types' "dummy") orelse |
56025 | 659 |
Name_Space.intern (Name_Space.space_of_table types') "dummy" = "dummy" orelse |
59885
3470a265d404
subtle change of long-standing name space policy: unknown entries are treated as hidden, consequently "private" is understood in the strict sense;
wenzelm
parents:
59884
diff
changeset
|
660 |
error "Illegal declaration of dummy type"; |
56025 | 661 |
in (classes, default, types') end); |
2964 | 662 |
|
56025 | 663 |
fun syntactic tsig (Type (c, Ts)) = |
664 |
(case lookup_type tsig c of SOME Nonterminal => true | _ => false) |
|
665 |
orelse exists (syntactic tsig) Ts |
|
14989 | 666 |
| syntactic _ _ = false; |
667 |
||
27302 | 668 |
in |
669 |
||
47005
421760a1efe7
maintain generic context naming in structure Name_Space (NB: empty = default_naming, init = local_naming);
wenzelm
parents:
46649
diff
changeset
|
670 |
fun add_type context (c, n) = |
42381
309ec68442c6
added Binding.print convenience, which includes quote already;
wenzelm
parents:
42375
diff
changeset
|
671 |
if n < 0 then error ("Bad type constructor declaration " ^ Binding.print c) |
47005
421760a1efe7
maintain generic context naming in structure Name_Space (NB: empty = default_naming, init = local_naming);
wenzelm
parents:
46649
diff
changeset
|
672 |
else map_types (new_decl context (c, LogicalType n)); |
27302 | 673 |
|
47005
421760a1efe7
maintain generic context naming in structure Name_Space (NB: empty = default_naming, init = local_naming);
wenzelm
parents:
46649
diff
changeset
|
674 |
fun add_abbrev context (a, vs, rhs) tsig = tsig |> map_types (fn types => |
14790
0d984ee030a1
major cleanup of tsig datastructures and extend/merge operations; fixes old bugs in classes/arities code; proper treatment of nonterminals and syntax-only types;
wenzelm
parents:
13666
diff
changeset
|
675 |
let |
30343
79f022df8527
replace old bstring by binding for logical primitives: class, type, const etc.;
wenzelm
parents:
29275
diff
changeset
|
676 |
fun err msg = |
42381
309ec68442c6
added Binding.print convenience, which includes quote already;
wenzelm
parents:
42375
diff
changeset
|
677 |
cat_error msg ("The error(s) above occurred in type abbreviation " ^ Binding.print a); |
24274
cb9236269af1
type mode: models certification mode (default, syntax, abbrev);
wenzelm
parents:
23655
diff
changeset
|
678 |
val rhs' = strip_sorts (no_tvars (cert_typ_mode mode_syntax tsig rhs)) |
14790
0d984ee030a1
major cleanup of tsig datastructures and extend/merge operations; fixes old bugs in classes/arities code; proper treatment of nonterminals and syntax-only types;
wenzelm
parents:
13666
diff
changeset
|
679 |
handle TYPE (msg, _, _) => err msg; |
33094
ef0d77b1e687
eliminated separate stamp -- NameSpace.define/merge etc. ensure uniqueness already;
wenzelm
parents:
32784
diff
changeset
|
680 |
val _ = |
ef0d77b1e687
eliminated separate stamp -- NameSpace.define/merge etc. ensure uniqueness already;
wenzelm
parents:
32784
diff
changeset
|
681 |
(case duplicates (op =) vs of |
ef0d77b1e687
eliminated separate stamp -- NameSpace.define/merge etc. ensure uniqueness already;
wenzelm
parents:
32784
diff
changeset
|
682 |
[] => [] |
ef0d77b1e687
eliminated separate stamp -- NameSpace.define/merge etc. ensure uniqueness already;
wenzelm
parents:
32784
diff
changeset
|
683 |
| dups => err ("Duplicate variables on lhs: " ^ commas_quote dups)); |
ef0d77b1e687
eliminated separate stamp -- NameSpace.define/merge etc. ensure uniqueness already;
wenzelm
parents:
32784
diff
changeset
|
684 |
val _ = |
ef0d77b1e687
eliminated separate stamp -- NameSpace.define/merge etc. ensure uniqueness already;
wenzelm
parents:
32784
diff
changeset
|
685 |
(case subtract (op =) vs (map #1 (Term.add_tfreesT rhs' [])) of |
ef0d77b1e687
eliminated separate stamp -- NameSpace.define/merge etc. ensure uniqueness already;
wenzelm
parents:
32784
diff
changeset
|
686 |
[] => [] |
ef0d77b1e687
eliminated separate stamp -- NameSpace.define/merge etc. ensure uniqueness already;
wenzelm
parents:
32784
diff
changeset
|
687 |
| extras => err ("Extra variables on rhs: " ^ commas_quote extras)); |
56025 | 688 |
in types |> new_decl context (a, Abbreviation (vs, rhs', syntactic tsig rhs')) end); |
0 | 689 |
|
47005
421760a1efe7
maintain generic context naming in structure Name_Space (NB: empty = default_naming, init = local_naming);
wenzelm
parents:
46649
diff
changeset
|
690 |
fun add_nonterminal context = map_types o new_decl context o rpair Nonterminal; |
14790
0d984ee030a1
major cleanup of tsig datastructures and extend/merge operations; fixes old bugs in classes/arities code; proper treatment of nonterminals and syntax-only types;
wenzelm
parents:
13666
diff
changeset
|
691 |
|
0d984ee030a1
major cleanup of tsig datastructures and extend/merge operations; fixes old bugs in classes/arities code; proper treatment of nonterminals and syntax-only types;
wenzelm
parents:
13666
diff
changeset
|
692 |
end; |
0 | 693 |
|
56025 | 694 |
fun hide_type fully c = map_tsig (fn (classes, default, types) => |
695 |
(classes, default, Name_Space.hide_table fully c types)); |
|
16370
033d890fe91f
name space of classes and types maintained in tsig;
wenzelm
parents:
16340
diff
changeset
|
696 |
|
3790 | 697 |
|
14790
0d984ee030a1
major cleanup of tsig datastructures and extend/merge operations; fixes old bugs in classes/arities code; proper treatment of nonterminals and syntax-only types;
wenzelm
parents:
13666
diff
changeset
|
698 |
(* merge type signatures *) |
0d984ee030a1
major cleanup of tsig datastructures and extend/merge operations; fixes old bugs in classes/arities code; proper treatment of nonterminals and syntax-only types;
wenzelm
parents:
13666
diff
changeset
|
699 |
|
61262
7bd1eb4b056e
tuned signature: eliminated pointless type Context.pretty;
wenzelm
parents:
59885
diff
changeset
|
700 |
fun merge_tsig context (tsig1, tsig2) = |
14790
0d984ee030a1
major cleanup of tsig datastructures and extend/merge operations; fixes old bugs in classes/arities code; proper treatment of nonterminals and syntax-only types;
wenzelm
parents:
13666
diff
changeset
|
701 |
let |
19515
9f650083da65
build classes/arities: refer to operations in sorts.ML;
wenzelm
parents:
19464
diff
changeset
|
702 |
val (TSig {classes = (space1, classes1), default = default1, types = types1, |
26641 | 703 |
log_types = _}) = tsig1; |
19515
9f650083da65
build classes/arities: refer to operations in sorts.ML;
wenzelm
parents:
19464
diff
changeset
|
704 |
val (TSig {classes = (space2, classes2), default = default2, types = types2, |
26641 | 705 |
log_types = _}) = tsig2; |
14790
0d984ee030a1
major cleanup of tsig datastructures and extend/merge operations; fixes old bugs in classes/arities code; proper treatment of nonterminals and syntax-only types;
wenzelm
parents:
13666
diff
changeset
|
706 |
|
33095
bbd52d2f8696
renamed NameSpace to Name_Space -- also to emphasize its subtle change in semantics;
wenzelm
parents:
33094
diff
changeset
|
707 |
val space' = Name_Space.merge (space1, space2); |
61262
7bd1eb4b056e
tuned signature: eliminated pointless type Context.pretty;
wenzelm
parents:
59885
diff
changeset
|
708 |
val classes' = Sorts.merge_algebra context (classes1, classes2); |
19515
9f650083da65
build classes/arities: refer to operations in sorts.ML;
wenzelm
parents:
19464
diff
changeset
|
709 |
val default' = Sorts.inter_sort classes' (default1, default2); |
33095
bbd52d2f8696
renamed NameSpace to Name_Space -- also to emphasize its subtle change in semantics;
wenzelm
parents:
33094
diff
changeset
|
710 |
val types' = Name_Space.merge_tables (types1, types2); |
19642 | 711 |
in build_tsig ((space', classes'), default', types') end; |
14790
0d984ee030a1
major cleanup of tsig datastructures and extend/merge operations; fixes old bugs in classes/arities code; proper treatment of nonterminals and syntax-only types;
wenzelm
parents:
13666
diff
changeset
|
712 |
|
0 | 713 |
end; |