author  blanchet 
Tue, 29 Jun 2010 11:29:31 +0200  
changeset 37632  df12f798df99 
parent 37625  35eeb95c5bee 
child 37643  f576af716aa6 
permissions  rwrr 
37578
9367cb36b1c4
renamed "Sledgehammer_FOL_Clauses" to "Metis_Clauses", so that Metis doesn't depend on Sledgehammer
blanchet
parents:
37577
diff
changeset

1 
(* Title: HOL/Tools/Sledgehammer/metis_clauses.ML 
33311  2 
Author: Jia Meng, Cambridge University Computer Laboratory 
36393
be73a2b2443b
support readable names even when Isar proof reconstruction is enabled  useful for debugging
blanchet
parents:
36378
diff
changeset

3 
Author: Jasmin Blanchette, TU Muenchen 
15347  4 

33311  5 
Storing/printing FOL clauses and arity clauses. Typed equality is 
6 
treated differently. 

15347  7 
*) 
8 

37578
9367cb36b1c4
renamed "Sledgehammer_FOL_Clauses" to "Metis_Clauses", so that Metis doesn't depend on Sledgehammer
blanchet
parents:
37577
diff
changeset

9 
signature METIS_CLAUSES = 
24310  10 
sig 
37577
5379f41a1322
merge "Sledgehammer_{F,H}OL_Clause", as requested by a FIXME
blanchet
parents:
37575
diff
changeset

11 
type name = string * string 
5379f41a1322
merge "Sledgehammer_{F,H}OL_Clause", as requested by a FIXME
blanchet
parents:
37575
diff
changeset

12 
datatype kind = Axiom  Conjecture 
5379f41a1322
merge "Sledgehammer_{F,H}OL_Clause", as requested by a FIXME
blanchet
parents:
37575
diff
changeset

13 
datatype type_literal = 
5379f41a1322
merge "Sledgehammer_{F,H}OL_Clause", as requested by a FIXME
blanchet
parents:
37575
diff
changeset

14 
TyLitVar of string * name  
5379f41a1322
merge "Sledgehammer_{F,H}OL_Clause", as requested by a FIXME
blanchet
parents:
37575
diff
changeset

15 
TyLitFree of string * name 
5379f41a1322
merge "Sledgehammer_{F,H}OL_Clause", as requested by a FIXME
blanchet
parents:
37575
diff
changeset

16 
datatype arLit = 
5379f41a1322
merge "Sledgehammer_{F,H}OL_Clause", as requested by a FIXME
blanchet
parents:
37575
diff
changeset

17 
TConsLit of class * string * string list 
5379f41a1322
merge "Sledgehammer_{F,H}OL_Clause", as requested by a FIXME
blanchet
parents:
37575
diff
changeset

18 
 TVarLit of class * string 
5379f41a1322
merge "Sledgehammer_{F,H}OL_Clause", as requested by a FIXME
blanchet
parents:
37575
diff
changeset

19 
datatype arity_clause = ArityClause of 
5379f41a1322
merge "Sledgehammer_{F,H}OL_Clause", as requested by a FIXME
blanchet
parents:
37575
diff
changeset

20 
{axiom_name: string, conclLit: arLit, premLits: arLit list} 
5379f41a1322
merge "Sledgehammer_{F,H}OL_Clause", as requested by a FIXME
blanchet
parents:
37575
diff
changeset

21 
datatype classrel_clause = ClassrelClause of 
5379f41a1322
merge "Sledgehammer_{F,H}OL_Clause", as requested by a FIXME
blanchet
parents:
37575
diff
changeset

22 
{axiom_name: string, subclass: class, superclass: class} 
5379f41a1322
merge "Sledgehammer_{F,H}OL_Clause", as requested by a FIXME
blanchet
parents:
37575
diff
changeset

23 
datatype combtyp = 
5379f41a1322
merge "Sledgehammer_{F,H}OL_Clause", as requested by a FIXME
blanchet
parents:
37575
diff
changeset

24 
TyVar of name  
5379f41a1322
merge "Sledgehammer_{F,H}OL_Clause", as requested by a FIXME
blanchet
parents:
37575
diff
changeset

25 
TyFree of name  
5379f41a1322
merge "Sledgehammer_{F,H}OL_Clause", as requested by a FIXME
blanchet
parents:
37575
diff
changeset

26 
TyConstr of name * combtyp list 
5379f41a1322
merge "Sledgehammer_{F,H}OL_Clause", as requested by a FIXME
blanchet
parents:
37575
diff
changeset

27 
datatype combterm = 
5379f41a1322
merge "Sledgehammer_{F,H}OL_Clause", as requested by a FIXME
blanchet
parents:
37575
diff
changeset

28 
CombConst of name * combtyp * combtyp list (* Const and Free *)  
5379f41a1322
merge "Sledgehammer_{F,H}OL_Clause", as requested by a FIXME
blanchet
parents:
37575
diff
changeset

29 
CombVar of name * combtyp  
5379f41a1322
merge "Sledgehammer_{F,H}OL_Clause", as requested by a FIXME
blanchet
parents:
37575
diff
changeset

30 
CombApp of combterm * combterm 
5379f41a1322
merge "Sledgehammer_{F,H}OL_Clause", as requested by a FIXME
blanchet
parents:
37575
diff
changeset

31 
datatype literal = Literal of bool * combterm 
5379f41a1322
merge "Sledgehammer_{F,H}OL_Clause", as requested by a FIXME
blanchet
parents:
37575
diff
changeset

32 
datatype hol_clause = 
5379f41a1322
merge "Sledgehammer_{F,H}OL_Clause", as requested by a FIXME
blanchet
parents:
37575
diff
changeset

33 
HOLClause of {clause_id: int, axiom_name: string, th: thm, kind: kind, 
5379f41a1322
merge "Sledgehammer_{F,H}OL_Clause", as requested by a FIXME
blanchet
parents:
37575
diff
changeset

34 
literals: literal list, ctypes_sorts: typ list} 
5379f41a1322
merge "Sledgehammer_{F,H}OL_Clause", as requested by a FIXME
blanchet
parents:
37575
diff
changeset

35 

37509
f39464d971c4
factor out TPTP format output into file of its own, to facilitate further changes
blanchet
parents:
37500
diff
changeset

36 
val type_wrapper_name : string 
24310  37 
val schematic_var_prefix: string 
38 
val fixed_var_prefix: string 

39 
val tvar_prefix: string 

40 
val tfree_prefix: string 

41 
val const_prefix: string 

42 
val tconst_prefix: string 

43 
val class_prefix: string 

44 
val union_all: ''a list list > ''a list 

37572
a899f9506f39
more intramodule dependency cleanup + merge "const" and "type_const" tables, since this is safe
blanchet
parents:
37570
diff
changeset

45 
val invert_const: string > string 
24310  46 
val ascii_of: string > string 
47 
val undo_ascii_of: string > string 

37572
a899f9506f39
more intramodule dependency cleanup + merge "const" and "type_const" tables, since this is safe
blanchet
parents:
37570
diff
changeset

48 
val strip_prefix: string > string > string option 
24310  49 
val make_schematic_var : string * int > string 
18868  50 
val make_fixed_var : string > string 
51 
val make_schematic_type_var : string * int > string 

24310  52 
val make_fixed_type_var : string > string 
37498
b426cbdb5a23
removed Sledgehammer's support for the DFG syntax;
blanchet
parents:
37479
diff
changeset

53 
val make_fixed_const : string > string 
b426cbdb5a23
removed Sledgehammer's support for the DFG syntax;
blanchet
parents:
37479
diff
changeset

54 
val make_fixed_type_const : string > string 
18868  55 
val make_type_class : string > string 
37618
fa57a87f92a0
get rid of Skolem cache by performing CNFconversion after fact selection
blanchet
parents:
37616
diff
changeset

56 
val skolem_theory_name: string 
fa57a87f92a0
get rid of Skolem cache by performing CNFconversion after fact selection
blanchet
parents:
37616
diff
changeset

57 
val skolem_prefix: string 
fa57a87f92a0
get rid of Skolem cache by performing CNFconversion after fact selection
blanchet
parents:
37616
diff
changeset

58 
val skolem_infix: string 
fa57a87f92a0
get rid of Skolem cache by performing CNFconversion after fact selection
blanchet
parents:
37616
diff
changeset

59 
val is_skolem_const_name: string > bool 
fa57a87f92a0
get rid of Skolem cache by performing CNFconversion after fact selection
blanchet
parents:
37616
diff
changeset

60 
val num_type_args: theory > string > int 
36966
adc11fb3f3aa
generate proper arity declarations for TFrees for SPASS's DFG format;
blanchet
parents:
36692
diff
changeset

61 
val type_literals_for_types : typ list > type_literal list 
35865  62 
val make_classrel_clauses: theory > class list > class list > classrel_clause list 
63 
val make_arity_clauses: theory > string list > class list > class list * arity_clause list 

37577
5379f41a1322
merge "Sledgehammer_{F,H}OL_Clause", as requested by a FIXME
blanchet
parents:
37575
diff
changeset

64 
val type_of_combterm : combterm > combtyp 
5379f41a1322
merge "Sledgehammer_{F,H}OL_Clause", as requested by a FIXME
blanchet
parents:
37575
diff
changeset

65 
val strip_combterm_comb : combterm > combterm * combterm list 
5379f41a1322
merge "Sledgehammer_{F,H}OL_Clause", as requested by a FIXME
blanchet
parents:
37575
diff
changeset

66 
val literals_of_term : theory > term > literal list * typ list 
37625
35eeb95c5bee
rename "skolem_somes" to "skolems", now that there's only one flavor of Skolems
blanchet
parents:
37624
diff
changeset

67 
val conceal_skolem_terms : 
37577
5379f41a1322
merge "Sledgehammer_{F,H}OL_Clause", as requested by a FIXME
blanchet
parents:
37575
diff
changeset

68 
int > (string * term) list > term > (string * term) list * term 
37632  69 
val reveal_skolem_terms : (string * term) list > term > term 
37577
5379f41a1322
merge "Sledgehammer_{F,H}OL_Clause", as requested by a FIXME
blanchet
parents:
37575
diff
changeset

70 
val tfree_classes_of_terms : term list > string list 
5379f41a1322
merge "Sledgehammer_{F,H}OL_Clause", as requested by a FIXME
blanchet
parents:
37575
diff
changeset

71 
val tvar_classes_of_terms : term list > string list 
5379f41a1322
merge "Sledgehammer_{F,H}OL_Clause", as requested by a FIXME
blanchet
parents:
37575
diff
changeset

72 
val type_consts_of_terms : theory > term list > string list 
24310  73 
end 
15347  74 

37578
9367cb36b1c4
renamed "Sledgehammer_FOL_Clauses" to "Metis_Clauses", so that Metis doesn't depend on Sledgehammer
blanchet
parents:
37577
diff
changeset

75 
structure Metis_Clauses : METIS_CLAUSES = 
15347  76 
struct 
77 

37577
5379f41a1322
merge "Sledgehammer_{F,H}OL_Clause", as requested by a FIXME
blanchet
parents:
37575
diff
changeset

78 
open Clausifier 
5379f41a1322
merge "Sledgehammer_{F,H}OL_Clause", as requested by a FIXME
blanchet
parents:
37575
diff
changeset

79 

37509
f39464d971c4
factor out TPTP format output into file of its own, to facilitate further changes
blanchet
parents:
37500
diff
changeset

80 
val type_wrapper_name = "ti" 
f39464d971c4
factor out TPTP format output into file of its own, to facilitate further changes
blanchet
parents:
37500
diff
changeset

81 

15347  82 
val schematic_var_prefix = "V_"; 
83 
val fixed_var_prefix = "v_"; 

84 

17230
77e93bf303a5
fixed arities and restored changes that had gone missing
paulson
parents:
17150
diff
changeset

85 
val tvar_prefix = "T_"; 
77e93bf303a5
fixed arities and restored changes that had gone missing
paulson
parents:
17150
diff
changeset

86 
val tfree_prefix = "t_"; 
15347  87 

37509
f39464d971c4
factor out TPTP format output into file of its own, to facilitate further changes
blanchet
parents:
37500
diff
changeset

88 
val classrel_clause_prefix = "clsrel_"; 
15347  89 

17230
77e93bf303a5
fixed arities and restored changes that had gone missing
paulson
parents:
17150
diff
changeset

90 
val const_prefix = "c_"; 
24310  91 
val tconst_prefix = "tc_"; 
92 
val class_prefix = "class_"; 

15347  93 

36218
0e4a01f3e7d3
get rid of "List.foldl" + add timestamp to SPASS
blanchet
parents:
36170
diff
changeset

94 
fun union_all xss = fold (union (op =)) xss [] 
17775  95 

36493
a3357a631b96
reintroduced short names for HOL>FOL constants; other parts of the code rely on these
blanchet
parents:
36491
diff
changeset

96 
(* Readable names for the more common symbolic functions. Do not mess with the 
37479
f6b1ee5b420b
try to improve Sledgehammer/Metis's behavior in full_types mode, e.g. by handing True, False, and If better
blanchet
parents:
37414
diff
changeset

97 
last nine entries of the table unless you know what you are doing. *) 
15347  98 
val const_trans_table = 
35865  99 
Symtab.make [(@{const_name "op ="}, "equal"), 
100 
(@{const_name "op &"}, "and"), 

101 
(@{const_name "op "}, "or"), 

102 
(@{const_name "op >"}, "implies"), 

36493
a3357a631b96
reintroduced short names for HOL>FOL constants; other parts of the code rely on these
blanchet
parents:
36491
diff
changeset

103 
(@{const_name "op :"}, "in"), 
a3357a631b96
reintroduced short names for HOL>FOL constants; other parts of the code rely on these
blanchet
parents:
36491
diff
changeset

104 
(@{const_name fequal}, "fequal"), 
a3357a631b96
reintroduced short names for HOL>FOL constants; other parts of the code rely on these
blanchet
parents:
36491
diff
changeset

105 
(@{const_name COMBI}, "COMBI"), 
a3357a631b96
reintroduced short names for HOL>FOL constants; other parts of the code rely on these
blanchet
parents:
36491
diff
changeset

106 
(@{const_name COMBK}, "COMBK"), 
a3357a631b96
reintroduced short names for HOL>FOL constants; other parts of the code rely on these
blanchet
parents:
36491
diff
changeset

107 
(@{const_name COMBB}, "COMBB"), 
a3357a631b96
reintroduced short names for HOL>FOL constants; other parts of the code rely on these
blanchet
parents:
36491
diff
changeset

108 
(@{const_name COMBC}, "COMBC"), 
37479
f6b1ee5b420b
try to improve Sledgehammer/Metis's behavior in full_types mode, e.g. by handing True, False, and If better
blanchet
parents:
37414
diff
changeset

109 
(@{const_name COMBS}, "COMBS"), 
f6b1ee5b420b
try to improve Sledgehammer/Metis's behavior in full_types mode, e.g. by handing True, False, and If better
blanchet
parents:
37414
diff
changeset

110 
(@{const_name True}, "True"), 
f6b1ee5b420b
try to improve Sledgehammer/Metis's behavior in full_types mode, e.g. by handing True, False, and If better
blanchet
parents:
37414
diff
changeset

111 
(@{const_name False}, "False"), 
37572
a899f9506f39
more intramodule dependency cleanup + merge "const" and "type_const" tables, since this is safe
blanchet
parents:
37570
diff
changeset

112 
(@{const_name If}, "If"), 
a899f9506f39
more intramodule dependency cleanup + merge "const" and "type_const" tables, since this is safe
blanchet
parents:
37570
diff
changeset

113 
(@{type_name "*"}, "prod"), 
a899f9506f39
more intramodule dependency cleanup + merge "const" and "type_const" tables, since this is safe
blanchet
parents:
37570
diff
changeset

114 
(@{type_name "+"}, "sum")] 
15347  115 

37572
a899f9506f39
more intramodule dependency cleanup + merge "const" and "type_const" tables, since this is safe
blanchet
parents:
37570
diff
changeset

116 
(* Invert the table of translations between Isabelle and ATPs. *) 
a899f9506f39
more intramodule dependency cleanup + merge "const" and "type_const" tables, since this is safe
blanchet
parents:
37570
diff
changeset

117 
val const_trans_table_inv = 
a899f9506f39
more intramodule dependency cleanup + merge "const" and "type_const" tables, since this is safe
blanchet
parents:
37570
diff
changeset

118 
Symtab.update ("fequal", @{const_name "op ="}) 
a899f9506f39
more intramodule dependency cleanup + merge "const" and "type_const" tables, since this is safe
blanchet
parents:
37570
diff
changeset

119 
(Symtab.make (map swap (Symtab.dest const_trans_table))) 
a899f9506f39
more intramodule dependency cleanup + merge "const" and "type_const" tables, since this is safe
blanchet
parents:
37570
diff
changeset

120 

a899f9506f39
more intramodule dependency cleanup + merge "const" and "type_const" tables, since this is safe
blanchet
parents:
37570
diff
changeset

121 
val invert_const = perhaps (Symtab.lookup const_trans_table_inv) 
15347  122 

15610  123 
(*Escaping of special characters. 
124 
Alphanumeric characters are left unchanged. 

125 
The character _ goes to __ 

126 
Characters in the range ASCII space to / go to _A to _P, respectively. 

24183  127 
Other printing characters go to _nnn where nnn is the decimal ASCII code.*) 
128 
val A_minus_space = Char.ord #"A"  Char.ord #" "; 

15610  129 

24183  130 
fun stringN_of_int 0 _ = "" 
131 
 stringN_of_int k n = stringN_of_int (k1) (n div 10) ^ Int.toString (n mod 10); 

15610  132 

15347  133 
fun ascii_of_c c = 
15610  134 
if Char.isAlphaNum c then String.str c 
135 
else if c = #"_" then "__" 

24310  136 
else if #" " <= c andalso c <= #"/" 
15610  137 
then "_" ^ String.str (Char.chr (Char.ord c + A_minus_space)) 
24310  138 
else if Char.isPrint c 
24183  139 
then ("_" ^ stringN_of_int 3 (Char.ord c)) (*fixed width, in case more digits follow*) 
15610  140 
else "" 
15347  141 

15610  142 
val ascii_of = String.translate ascii_of_c; 
143 

24183  144 
(** Remove ASCII armouring from names in proof files **) 
145 

146 
(*We don't raise error exceptions because this code can run inside the watcher. 

147 
Also, the errors are "impossible" (hah!)*) 

148 
fun undo_ascii_aux rcs [] = String.implode(rev rcs) 

149 
 undo_ascii_aux rcs [#"_"] = undo_ascii_aux (#"_"::rcs) [] (*ERROR*) 

150 
(*Three types of _ escapes: __, _A to _P, _nnn*) 

151 
 undo_ascii_aux rcs (#"_" :: #"_" :: cs) = undo_ascii_aux (#"_"::rcs) cs 

24310  152 
 undo_ascii_aux rcs (#"_" :: c :: cs) = 
24183  153 
if #"A" <= c andalso c<= #"P" (*translation of #" " to #"/"*) 
154 
then undo_ascii_aux (Char.chr(Char.ord c  A_minus_space) :: rcs) cs 

24310  155 
else 
24183  156 
let val digits = List.take (c::cs, 3) handle Subscript => [] 
24310  157 
in 
24183  158 
case Int.fromString (String.implode digits) of 
159 
NONE => undo_ascii_aux (c:: #"_"::rcs) cs (*ERROR*) 

160 
 SOME n => undo_ascii_aux (Char.chr n :: rcs) (List.drop (cs, 2)) 

161 
end 

162 
 undo_ascii_aux rcs (c::cs) = undo_ascii_aux (c::rcs) cs; 

163 

164 
val undo_ascii_of = undo_ascii_aux [] o String.explode; 

15347  165 

37572
a899f9506f39
more intramodule dependency cleanup + merge "const" and "type_const" tables, since this is safe
blanchet
parents:
37570
diff
changeset

166 
(* If string s has the prefix s1, return the result of deleting it, 
a899f9506f39
more intramodule dependency cleanup + merge "const" and "type_const" tables, since this is safe
blanchet
parents:
37570
diff
changeset

167 
unASCII'd. *) 
a899f9506f39
more intramodule dependency cleanup + merge "const" and "type_const" tables, since this is safe
blanchet
parents:
37570
diff
changeset

168 
fun strip_prefix s1 s = 
a899f9506f39
more intramodule dependency cleanup + merge "const" and "type_const" tables, since this is safe
blanchet
parents:
37570
diff
changeset

169 
if String.isPrefix s1 s then 
a899f9506f39
more intramodule dependency cleanup + merge "const" and "type_const" tables, since this is safe
blanchet
parents:
37570
diff
changeset

170 
SOME (undo_ascii_of (String.extract (s, size s1, NONE))) 
a899f9506f39
more intramodule dependency cleanup + merge "const" and "type_const" tables, since this is safe
blanchet
parents:
37570
diff
changeset

171 
else 
a899f9506f39
more intramodule dependency cleanup + merge "const" and "type_const" tables, since this is safe
blanchet
parents:
37570
diff
changeset

172 
NONE 
a899f9506f39
more intramodule dependency cleanup + merge "const" and "type_const" tables, since this is safe
blanchet
parents:
37570
diff
changeset

173 

16925
0fd7b1438d28
simpler variable names, and no types for monomorphic constants
paulson
parents:
16903
diff
changeset

174 
(*Remove the initial ' character from a type variable, if it is present*) 
0fd7b1438d28
simpler variable names, and no types for monomorphic constants
paulson
parents:
16903
diff
changeset

175 
fun trim_type_var s = 
0fd7b1438d28
simpler variable names, and no types for monomorphic constants
paulson
parents:
16903
diff
changeset

176 
if s <> "" andalso String.sub(s,0) = #"'" then String.extract(s,1,NONE) 
0fd7b1438d28
simpler variable names, and no types for monomorphic constants
paulson
parents:
16903
diff
changeset

177 
else error ("trim_type: Malformed type variable encountered: " ^ s); 
0fd7b1438d28
simpler variable names, and no types for monomorphic constants
paulson
parents:
16903
diff
changeset

178 

16903  179 
fun ascii_of_indexname (v,0) = ascii_of v 
17525
ae5bb6001afb
tidying, and support for axclass/classrel clauses
paulson
parents:
17422
diff
changeset

180 
 ascii_of_indexname (v,i) = ascii_of v ^ "_" ^ Int.toString i; 
15347  181 

17230
77e93bf303a5
fixed arities and restored changes that had gone missing
paulson
parents:
17150
diff
changeset

182 
fun make_schematic_var v = schematic_var_prefix ^ (ascii_of_indexname v); 
15347  183 
fun make_fixed_var x = fixed_var_prefix ^ (ascii_of x); 
184 

24310  185 
fun make_schematic_type_var (x,i) = 
16925
0fd7b1438d28
simpler variable names, and no types for monomorphic constants
paulson
parents:
16903
diff
changeset

186 
tvar_prefix ^ (ascii_of_indexname (trim_type_var x,i)); 
0fd7b1438d28
simpler variable names, and no types for monomorphic constants
paulson
parents:
16903
diff
changeset

187 
fun make_fixed_type_var x = tfree_prefix ^ (ascii_of (trim_type_var x)); 
15347  188 

37498
b426cbdb5a23
removed Sledgehammer's support for the DFG syntax;
blanchet
parents:
37479
diff
changeset

189 
fun lookup_const c = 
b426cbdb5a23
removed Sledgehammer's support for the DFG syntax;
blanchet
parents:
37479
diff
changeset

190 
case Symtab.lookup const_trans_table c of 
b426cbdb5a23
removed Sledgehammer's support for the DFG syntax;
blanchet
parents:
37479
diff
changeset

191 
SOME c' => c' 
b426cbdb5a23
removed Sledgehammer's support for the DFG syntax;
blanchet
parents:
37479
diff
changeset

192 
 NONE => ascii_of c 
23075  193 

36062  194 
(* "op =" MUST BE "equal" because it's built into ATPs. *) 
37498
b426cbdb5a23
removed Sledgehammer's support for the DFG syntax;
blanchet
parents:
37479
diff
changeset

195 
fun make_fixed_const @{const_name "op ="} = "equal" 
b426cbdb5a23
removed Sledgehammer's support for the DFG syntax;
blanchet
parents:
37479
diff
changeset

196 
 make_fixed_const c = const_prefix ^ lookup_const c 
18411
2d3165a0fb40
No axiom, arity or classrel clauses contain HOL.type. Negative occurrences are
paulson
parents:
18409
diff
changeset

197 

37572
a899f9506f39
more intramodule dependency cleanup + merge "const" and "type_const" tables, since this is safe
blanchet
parents:
37570
diff
changeset

198 
fun make_fixed_type_const c = tconst_prefix ^ lookup_const c 
17150
ce2a1aeb42aa
DFG output now works for untyped rules (ML "ResClause.untyped();")
quigley
parents:
16976
diff
changeset

199 

17261  200 
fun make_type_class clas = class_prefix ^ ascii_of clas; 
17150
ce2a1aeb42aa
DFG output now works for untyped rules (ML "ResClause.untyped();")
quigley
parents:
16976
diff
changeset

201 

37618
fa57a87f92a0
get rid of Skolem cache by performing CNFconversion after fact selection
blanchet
parents:
37616
diff
changeset

202 
val skolem_theory_name = "Sledgehammer" ^ Long_Name.separator ^ "Sko" 
fa57a87f92a0
get rid of Skolem cache by performing CNFconversion after fact selection
blanchet
parents:
37616
diff
changeset

203 
val skolem_prefix = "sko_" 
fa57a87f92a0
get rid of Skolem cache by performing CNFconversion after fact selection
blanchet
parents:
37616
diff
changeset

204 
val skolem_infix = "$" 
fa57a87f92a0
get rid of Skolem cache by performing CNFconversion after fact selection
blanchet
parents:
37616
diff
changeset

205 

fa57a87f92a0
get rid of Skolem cache by performing CNFconversion after fact selection
blanchet
parents:
37616
diff
changeset

206 
(* Hack: Could return false positives (e.g., a user happens to declare a 
fa57a87f92a0
get rid of Skolem cache by performing CNFconversion after fact selection
blanchet
parents:
37616
diff
changeset

207 
constant called "SomeTheory.sko_means_shoe_in_$wedish". *) 
fa57a87f92a0
get rid of Skolem cache by performing CNFconversion after fact selection
blanchet
parents:
37616
diff
changeset

208 
val is_skolem_const_name = 
fa57a87f92a0
get rid of Skolem cache by performing CNFconversion after fact selection
blanchet
parents:
37616
diff
changeset

209 
Long_Name.base_name 
fa57a87f92a0
get rid of Skolem cache by performing CNFconversion after fact selection
blanchet
parents:
37616
diff
changeset

210 
#> String.isPrefix skolem_prefix andf String.isSubstring skolem_infix 
fa57a87f92a0
get rid of Skolem cache by performing CNFconversion after fact selection
blanchet
parents:
37616
diff
changeset

211 

fa57a87f92a0
get rid of Skolem cache by performing CNFconversion after fact selection
blanchet
parents:
37616
diff
changeset

212 
(* The number of type arguments of a constant, zero if it's monomorphic. For 
fa57a87f92a0
get rid of Skolem cache by performing CNFconversion after fact selection
blanchet
parents:
37616
diff
changeset

213 
(instances of) Skolem pseudoconstants, this information is encoded in the 
fa57a87f92a0
get rid of Skolem cache by performing CNFconversion after fact selection
blanchet
parents:
37616
diff
changeset

214 
constant name. *) 
fa57a87f92a0
get rid of Skolem cache by performing CNFconversion after fact selection
blanchet
parents:
37616
diff
changeset

215 
fun num_type_args thy s = 
fa57a87f92a0
get rid of Skolem cache by performing CNFconversion after fact selection
blanchet
parents:
37616
diff
changeset

216 
if String.isPrefix skolem_theory_name s then 
fa57a87f92a0
get rid of Skolem cache by performing CNFconversion after fact selection
blanchet
parents:
37616
diff
changeset

217 
s > unprefix skolem_theory_name 
fa57a87f92a0
get rid of Skolem cache by performing CNFconversion after fact selection
blanchet
parents:
37616
diff
changeset

218 
> space_explode skolem_infix > hd 
fa57a87f92a0
get rid of Skolem cache by performing CNFconversion after fact selection
blanchet
parents:
37616
diff
changeset

219 
> space_explode "_" > List.last > Int.fromString > the 
fa57a87f92a0
get rid of Skolem cache by performing CNFconversion after fact selection
blanchet
parents:
37616
diff
changeset

220 
else 
fa57a87f92a0
get rid of Skolem cache by performing CNFconversion after fact selection
blanchet
parents:
37616
diff
changeset

221 
(s, Sign.the_const_type thy s) > Sign.const_typargs thy > length 
17150
ce2a1aeb42aa
DFG output now works for untyped rules (ML "ResClause.untyped();")
quigley
parents:
16976
diff
changeset

222 

37624  223 
(**** Definitions and functions for FOL clauses for TPTP format output ****) 
36169
27b1cc58715e
store nonmangled names along with mangled type names in Sledgehammer for debugging purposes
blanchet
parents:
36168
diff
changeset

224 

37624  225 
type name = string * string 
15347  226 

37577
5379f41a1322
merge "Sledgehammer_{F,H}OL_Clause", as requested by a FIXME
blanchet
parents:
37575
diff
changeset

227 
datatype kind = Axiom  Conjecture 
23385  228 

15347  229 
(**** Isabelle FOL clauses ****) 
230 

36556
81dc2c20f052
use readable names in "debug" mode for type vars + don't pipe facts using "using" but rather give them directly to metis (works better with type variables)
blanchet
parents:
36493
diff
changeset

231 
(* The first component is the type class; the second is a TVar or TFree. *) 
81dc2c20f052
use readable names in "debug" mode for type vars + don't pipe facts using "using" but rather give them directly to metis (works better with type variables)
blanchet
parents:
36493
diff
changeset

232 
datatype type_literal = 
81dc2c20f052
use readable names in "debug" mode for type vars + don't pipe facts using "using" but rather give them directly to metis (works better with type variables)
blanchet
parents:
36493
diff
changeset

233 
TyLitVar of string * name  
81dc2c20f052
use readable names in "debug" mode for type vars + don't pipe facts using "using" but rather give them directly to metis (works better with type variables)
blanchet
parents:
36493
diff
changeset

234 
TyLitFree of string * name 
15347  235 

17404
d16c3a62c396
the experimental tagging system, and the usual tidying
paulson
parents:
17375
diff
changeset

236 
exception CLAUSE of string * term; 
15347  237 

24310  238 
(*Make literals for sorted type variables*) 
24940  239 
fun sorts_on_typs_aux (_, []) = [] 
240 
 sorts_on_typs_aux ((x,i), s::ss) = 

241 
let val sorts = sorts_on_typs_aux ((x,i), ss) 

22643
bc3bb8e9594a
Improved and simplified the treatment of classrel/arity clauses
paulson
parents:
22383
diff
changeset

242 
in 
bc3bb8e9594a
Improved and simplified the treatment of classrel/arity clauses
paulson
parents:
22383
diff
changeset

243 
if s = "HOL.type" then sorts 
36556
81dc2c20f052
use readable names in "debug" mode for type vars + don't pipe facts using "using" but rather give them directly to metis (works better with type variables)
blanchet
parents:
36493
diff
changeset

244 
else if i = ~1 then TyLitFree (make_type_class s, `make_fixed_type_var x) :: sorts 
81dc2c20f052
use readable names in "debug" mode for type vars + don't pipe facts using "using" but rather give them directly to metis (works better with type variables)
blanchet
parents:
36493
diff
changeset

245 
else TyLitVar (make_type_class s, (make_schematic_type_var (x,i), x)) :: sorts 
22643
bc3bb8e9594a
Improved and simplified the treatment of classrel/arity clauses
paulson
parents:
22383
diff
changeset

246 
end; 
17150
ce2a1aeb42aa
DFG output now works for untyped rules (ML "ResClause.untyped();")
quigley
parents:
16976
diff
changeset

247 

24940  248 
fun sorts_on_typs (TFree (a,s)) = sorts_on_typs_aux ((a,~1),s) 
249 
 sorts_on_typs (TVar (v,s)) = sorts_on_typs_aux (v,s); 

250 

24937
340523598914
contextbased treatment of generalization; also handling TFrees in axiom clauses
paulson
parents:
24322
diff
changeset

251 
(*Given a list of sorted type variables, return a list of type literals.*) 
36966
adc11fb3f3aa
generate proper arity declarations for TFrees for SPASS's DFG format;
blanchet
parents:
36692
diff
changeset

252 
fun type_literals_for_types Ts = 
adc11fb3f3aa
generate proper arity declarations for TFrees for SPASS's DFG format;
blanchet
parents:
36692
diff
changeset

253 
fold (union (op =)) (map sorts_on_typs Ts) [] 
20015
1ffcf4802802
Literals aren't sorted any more. Output overloaded constants' type var instantiations.
mengj
parents:
19719
diff
changeset

254 

1ffcf4802802
Literals aren't sorted any more. Output overloaded constants' type var instantiations.
mengj
parents:
19719
diff
changeset

255 
(** make axiom and conjecture clauses. **) 
1ffcf4802802
Literals aren't sorted any more. Output overloaded constants' type var instantiations.
mengj
parents:
19719
diff
changeset

256 

15347  257 
(**** Isabelle arities ****) 
258 

24310  259 
datatype arLit = TConsLit of class * string * string list 
22643
bc3bb8e9594a
Improved and simplified the treatment of classrel/arity clauses
paulson
parents:
22383
diff
changeset

260 
 TVarLit of class * string; 
24310  261 

35865  262 
datatype arity_clause = 
37500
7587b6e63454
thread original theorem along with CNF theorem, as a step toward killing the Skolem cache
blanchet
parents:
37498
diff
changeset

263 
ArityClause of {axiom_name: string, conclLit: arLit, premLits: arLit list} 
15347  264 

265 

18798  266 
fun gen_TVars 0 = [] 
267 
 gen_TVars n = ("T_" ^ Int.toString n) :: gen_TVars (n1); 

15347  268 

18411
2d3165a0fb40
No axiom, arity or classrel clauses contain HOL.type. Negative occurrences are
paulson
parents:
18409
diff
changeset

269 
fun pack_sort(_,[]) = [] 
2d3165a0fb40
No axiom, arity or classrel clauses contain HOL.type. Negative occurrences are
paulson
parents:
18409
diff
changeset

270 
 pack_sort(tvar, "HOL.type"::srt) = pack_sort(tvar, srt) (*IGNORE sort "type"*) 
22643
bc3bb8e9594a
Improved and simplified the treatment of classrel/arity clauses
paulson
parents:
22383
diff
changeset

271 
 pack_sort(tvar, cls::srt) = (cls, tvar) :: pack_sort(tvar, srt); 
24310  272 

18411
2d3165a0fb40
No axiom, arity or classrel clauses contain HOL.type. Negative occurrences are
paulson
parents:
18409
diff
changeset

273 
(*Arity of type constructor tcon :: (arg1,...,argN)res*) 
37498
b426cbdb5a23
removed Sledgehammer's support for the DFG syntax;
blanchet
parents:
37479
diff
changeset

274 
fun make_axiom_arity_clause (tcons, axiom_name, (cls,args)) = 
21560  275 
let val tvars = gen_TVars (length args) 
17845
1438291d57f0
deletion of Tools/res_types_sorts; removal of absolute numbering of clauses
paulson
parents:
17775
diff
changeset

276 
val tvars_srts = ListPair.zip (tvars,args) 
1438291d57f0
deletion of Tools/res_types_sorts; removal of absolute numbering of clauses
paulson
parents:
17775
diff
changeset

277 
in 
37498
b426cbdb5a23
removed Sledgehammer's support for the DFG syntax;
blanchet
parents:
37479
diff
changeset

278 
ArityClause {axiom_name = axiom_name, 
b426cbdb5a23
removed Sledgehammer's support for the DFG syntax;
blanchet
parents:
37479
diff
changeset

279 
conclLit = TConsLit (cls, make_fixed_type_const tcons, tvars), 
b426cbdb5a23
removed Sledgehammer's support for the DFG syntax;
blanchet
parents:
37479
diff
changeset

280 
premLits = map TVarLit (union_all(map pack_sort tvars_srts))} 
17845
1438291d57f0
deletion of Tools/res_types_sorts; removal of absolute numbering of clauses
paulson
parents:
17775
diff
changeset

281 
end; 
15347  282 

283 

284 
(**** Isabelle class relations ****) 

285 

35865  286 
datatype classrel_clause = 
37500
7587b6e63454
thread original theorem along with CNF theorem, as a step toward killing the Skolem cache
blanchet
parents:
37498
diff
changeset

287 
ClassrelClause of {axiom_name: string, subclass: class, superclass: class} 
24310  288 

21290
33b6bb5d6ab8
Improvement to classrel clauses: now outputs the minimum needed.
paulson
parents:
21254
diff
changeset

289 
(*Generate all pairs (sub,super) such that sub is a proper subclass of super in theory thy.*) 
37498
b426cbdb5a23
removed Sledgehammer's support for the DFG syntax;
blanchet
parents:
37479
diff
changeset

290 
fun class_pairs _ [] _ = [] 
21432
625797c592b2
Optimized class_pairs for the common case of no subclasses
paulson
parents:
21416
diff
changeset

291 
 class_pairs thy subs supers = 
36218
0e4a01f3e7d3
get rid of "List.foldl" + add timestamp to SPASS
blanchet
parents:
36170
diff
changeset

292 
let 
0e4a01f3e7d3
get rid of "List.foldl" + add timestamp to SPASS
blanchet
parents:
36170
diff
changeset

293 
val class_less = Sorts.class_less (Sign.classes_of thy) 
0e4a01f3e7d3
get rid of "List.foldl" + add timestamp to SPASS
blanchet
parents:
36170
diff
changeset

294 
fun add_super sub super = class_less (sub, super) ? cons (sub, super) 
0e4a01f3e7d3
get rid of "List.foldl" + add timestamp to SPASS
blanchet
parents:
36170
diff
changeset

295 
fun add_supers sub = fold (add_super sub) supers 
0e4a01f3e7d3
get rid of "List.foldl" + add timestamp to SPASS
blanchet
parents:
36170
diff
changeset

296 
in fold add_supers subs [] end 
15347  297 

35865  298 
fun make_classrel_clause (sub,super) = 
37509
f39464d971c4
factor out TPTP format output into file of its own, to facilitate further changes
blanchet
parents:
37500
diff
changeset

299 
ClassrelClause {axiom_name = classrel_clause_prefix ^ ascii_of sub ^ "_" ^ 
f39464d971c4
factor out TPTP format output into file of its own, to facilitate further changes
blanchet
parents:
37500
diff
changeset

300 
ascii_of super, 
24310  301 
subclass = make_type_class sub, 
21290
33b6bb5d6ab8
Improvement to classrel clauses: now outputs the minimum needed.
paulson
parents:
21254
diff
changeset

302 
superclass = make_type_class super}; 
15347  303 

21290
33b6bb5d6ab8
Improvement to classrel clauses: now outputs the minimum needed.
paulson
parents:
21254
diff
changeset

304 
fun make_classrel_clauses thy subs supers = 
35865  305 
map make_classrel_clause (class_pairs thy subs supers); 
18868  306 

307 

308 
(** Isabelle arities **) 

17845
1438291d57f0
deletion of Tools/res_types_sorts; removal of absolute numbering of clauses
paulson
parents:
17775
diff
changeset

309 

37498
b426cbdb5a23
removed Sledgehammer's support for the DFG syntax;
blanchet
parents:
37479
diff
changeset

310 
fun arity_clause _ _ (_, []) = [] 
b426cbdb5a23
removed Sledgehammer's support for the DFG syntax;
blanchet
parents:
37479
diff
changeset

311 
 arity_clause seen n (tcons, ("HOL.type",_)::ars) = (*ignore*) 
b426cbdb5a23
removed Sledgehammer's support for the DFG syntax;
blanchet
parents:
37479
diff
changeset

312 
arity_clause seen n (tcons,ars) 
b426cbdb5a23
removed Sledgehammer's support for the DFG syntax;
blanchet
parents:
37479
diff
changeset

313 
 arity_clause seen n (tcons, (ar as (class,_)) :: ars) = 
36692
54b64d4ad524
farewell to oldstyle mem infixes  type inference in situations with mem_int and mem_string should provide enough information to resolve the type of (op =)
haftmann
parents:
36556
diff
changeset

314 
if member (op =) seen class then (*multiple arities for the same tycon, class pair*) 
37572
a899f9506f39
more intramodule dependency cleanup + merge "const" and "type_const" tables, since this is safe
blanchet
parents:
37570
diff
changeset

315 
make_axiom_arity_clause (tcons, lookup_const tcons ^ "_" ^ class ^ "_" ^ Int.toString n, ar) :: 
37498
b426cbdb5a23
removed Sledgehammer's support for the DFG syntax;
blanchet
parents:
37479
diff
changeset

316 
arity_clause seen (n+1) (tcons,ars) 
21373
18f519614978
Arity clauses are now produced only for types and type classes actually used.
paulson
parents:
21290
diff
changeset

317 
else 
37572
a899f9506f39
more intramodule dependency cleanup + merge "const" and "type_const" tables, since this is safe
blanchet
parents:
37570
diff
changeset

318 
make_axiom_arity_clause (tcons, lookup_const tcons ^ "_" ^ class, ar) :: 
37498
b426cbdb5a23
removed Sledgehammer's support for the DFG syntax;
blanchet
parents:
37479
diff
changeset

319 
arity_clause (class::seen) n (tcons,ars) 
17845
1438291d57f0
deletion of Tools/res_types_sorts; removal of absolute numbering of clauses
paulson
parents:
17775
diff
changeset

320 

37498
b426cbdb5a23
removed Sledgehammer's support for the DFG syntax;
blanchet
parents:
37479
diff
changeset

321 
fun multi_arity_clause [] = [] 
b426cbdb5a23
removed Sledgehammer's support for the DFG syntax;
blanchet
parents:
37479
diff
changeset

322 
 multi_arity_clause ((tcons, ars) :: tc_arlists) = 
b426cbdb5a23
removed Sledgehammer's support for the DFG syntax;
blanchet
parents:
37479
diff
changeset

323 
arity_clause [] 1 (tcons, ars) @ multi_arity_clause tc_arlists 
17845
1438291d57f0
deletion of Tools/res_types_sorts; removal of absolute numbering of clauses
paulson
parents:
17775
diff
changeset

324 

22643
bc3bb8e9594a
Improved and simplified the treatment of classrel/arity clauses
paulson
parents:
22383
diff
changeset

325 
(*Generate all pairs (tycon,class,sorts) such that tycon belongs to class in theory thy 
bc3bb8e9594a
Improved and simplified the treatment of classrel/arity clauses
paulson
parents:
22383
diff
changeset

326 
provided its arguments have the corresponding sorts.*) 
21373
18f519614978
Arity clauses are now produced only for types and type classes actually used.
paulson
parents:
21290
diff
changeset

327 
fun type_class_pairs thy tycons classes = 
18f519614978
Arity clauses are now produced only for types and type classes actually used.
paulson
parents:
21290
diff
changeset

328 
let val alg = Sign.classes_of thy 
36218
0e4a01f3e7d3
get rid of "List.foldl" + add timestamp to SPASS
blanchet
parents:
36170
diff
changeset

329 
fun domain_sorts tycon = Sorts.mg_domain alg tycon o single 
0e4a01f3e7d3
get rid of "List.foldl" + add timestamp to SPASS
blanchet
parents:
36170
diff
changeset

330 
fun add_class tycon class = 
0e4a01f3e7d3
get rid of "List.foldl" + add timestamp to SPASS
blanchet
parents:
36170
diff
changeset

331 
cons (class, domain_sorts tycon class) 
0e4a01f3e7d3
get rid of "List.foldl" + add timestamp to SPASS
blanchet
parents:
36170
diff
changeset

332 
handle Sorts.CLASS_ERROR _ => I 
0e4a01f3e7d3
get rid of "List.foldl" + add timestamp to SPASS
blanchet
parents:
36170
diff
changeset

333 
fun try_classes tycon = (tycon, fold (add_class tycon) classes []) 
21373
18f519614978
Arity clauses are now produced only for types and type classes actually used.
paulson
parents:
21290
diff
changeset

334 
in map try_classes tycons end; 
18f519614978
Arity clauses are now produced only for types and type classes actually used.
paulson
parents:
21290
diff
changeset

335 

22643
bc3bb8e9594a
Improved and simplified the treatment of classrel/arity clauses
paulson
parents:
22383
diff
changeset

336 
(*Proving one (tycon, class) membership may require proving others, so iterate.*) 
37498
b426cbdb5a23
removed Sledgehammer's support for the DFG syntax;
blanchet
parents:
37479
diff
changeset

337 
fun iter_type_class_pairs _ _ [] = ([], []) 
22643
bc3bb8e9594a
Improved and simplified the treatment of classrel/arity clauses
paulson
parents:
22383
diff
changeset

338 
 iter_type_class_pairs thy tycons classes = 
bc3bb8e9594a
Improved and simplified the treatment of classrel/arity clauses
paulson
parents:
22383
diff
changeset

339 
let val cpairs = type_class_pairs thy tycons classes 
33040  340 
val newclasses = union_all (union_all (union_all (map (map #2 o #2) cpairs))) 
341 
> subtract (op =) classes > subtract (op =) HOLogic.typeS 

24310  342 
val (classes', cpairs') = iter_type_class_pairs thy tycons newclasses 
33042  343 
in (union (op =) classes' classes, union (op =) cpairs' cpairs) end; 
24310  344 

37498
b426cbdb5a23
removed Sledgehammer's support for the DFG syntax;
blanchet
parents:
37479
diff
changeset

345 
fun make_arity_clauses thy tycons classes = 
24310  346 
let val (classes', cpairs) = iter_type_class_pairs thy tycons classes 
37498
b426cbdb5a23
removed Sledgehammer's support for the DFG syntax;
blanchet
parents:
37479
diff
changeset

347 
in (classes', multi_arity_clause cpairs) end; 
18863  348 

37577
5379f41a1322
merge "Sledgehammer_{F,H}OL_Clause", as requested by a FIXME
blanchet
parents:
37575
diff
changeset

349 
datatype combtyp = 
5379f41a1322
merge "Sledgehammer_{F,H}OL_Clause", as requested by a FIXME
blanchet
parents:
37575
diff
changeset

350 
TyVar of name  
5379f41a1322
merge "Sledgehammer_{F,H}OL_Clause", as requested by a FIXME
blanchet
parents:
37575
diff
changeset

351 
TyFree of name  
5379f41a1322
merge "Sledgehammer_{F,H}OL_Clause", as requested by a FIXME
blanchet
parents:
37575
diff
changeset

352 
TyConstr of name * combtyp list 
5379f41a1322
merge "Sledgehammer_{F,H}OL_Clause", as requested by a FIXME
blanchet
parents:
37575
diff
changeset

353 

5379f41a1322
merge "Sledgehammer_{F,H}OL_Clause", as requested by a FIXME
blanchet
parents:
37575
diff
changeset

354 
datatype combterm = 
5379f41a1322
merge "Sledgehammer_{F,H}OL_Clause", as requested by a FIXME
blanchet
parents:
37575
diff
changeset

355 
CombConst of name * combtyp * combtyp list (* Const and Free *)  
5379f41a1322
merge "Sledgehammer_{F,H}OL_Clause", as requested by a FIXME
blanchet
parents:
37575
diff
changeset

356 
CombVar of name * combtyp  
5379f41a1322
merge "Sledgehammer_{F,H}OL_Clause", as requested by a FIXME
blanchet
parents:
37575
diff
changeset

357 
CombApp of combterm * combterm 
5379f41a1322
merge "Sledgehammer_{F,H}OL_Clause", as requested by a FIXME
blanchet
parents:
37575
diff
changeset

358 

5379f41a1322
merge "Sledgehammer_{F,H}OL_Clause", as requested by a FIXME
blanchet
parents:
37575
diff
changeset

359 
datatype literal = Literal of bool * combterm 
5379f41a1322
merge "Sledgehammer_{F,H}OL_Clause", as requested by a FIXME
blanchet
parents:
37575
diff
changeset

360 

5379f41a1322
merge "Sledgehammer_{F,H}OL_Clause", as requested by a FIXME
blanchet
parents:
37575
diff
changeset

361 
datatype hol_clause = 
5379f41a1322
merge "Sledgehammer_{F,H}OL_Clause", as requested by a FIXME
blanchet
parents:
37575
diff
changeset

362 
HOLClause of {clause_id: int, axiom_name: string, th: thm, kind: kind, 
5379f41a1322
merge "Sledgehammer_{F,H}OL_Clause", as requested by a FIXME
blanchet
parents:
37575
diff
changeset

363 
literals: literal list, ctypes_sorts: typ list} 
5379f41a1322
merge "Sledgehammer_{F,H}OL_Clause", as requested by a FIXME
blanchet
parents:
37575
diff
changeset

364 

5379f41a1322
merge "Sledgehammer_{F,H}OL_Clause", as requested by a FIXME
blanchet
parents:
37575
diff
changeset

365 
(*********************************************************************) 
5379f41a1322
merge "Sledgehammer_{F,H}OL_Clause", as requested by a FIXME
blanchet
parents:
37575
diff
changeset

366 
(* convert a clause with type Term.term to a clause with type clause *) 
5379f41a1322
merge "Sledgehammer_{F,H}OL_Clause", as requested by a FIXME
blanchet
parents:
37575
diff
changeset

367 
(*********************************************************************) 
5379f41a1322
merge "Sledgehammer_{F,H}OL_Clause", as requested by a FIXME
blanchet
parents:
37575
diff
changeset

368 

5379f41a1322
merge "Sledgehammer_{F,H}OL_Clause", as requested by a FIXME
blanchet
parents:
37575
diff
changeset

369 
(*Result of a function type; no need to check that the argument type matches.*) 
5379f41a1322
merge "Sledgehammer_{F,H}OL_Clause", as requested by a FIXME
blanchet
parents:
37575
diff
changeset

370 
fun result_type (TyConstr (_, [_, tp2])) = tp2 
5379f41a1322
merge "Sledgehammer_{F,H}OL_Clause", as requested by a FIXME
blanchet
parents:
37575
diff
changeset

371 
 result_type _ = raise Fail "nonfunction type" 
5379f41a1322
merge "Sledgehammer_{F,H}OL_Clause", as requested by a FIXME
blanchet
parents:
37575
diff
changeset

372 

5379f41a1322
merge "Sledgehammer_{F,H}OL_Clause", as requested by a FIXME
blanchet
parents:
37575
diff
changeset

373 
fun type_of_combterm (CombConst (_, tp, _)) = tp 
5379f41a1322
merge "Sledgehammer_{F,H}OL_Clause", as requested by a FIXME
blanchet
parents:
37575
diff
changeset

374 
 type_of_combterm (CombVar (_, tp)) = tp 
5379f41a1322
merge "Sledgehammer_{F,H}OL_Clause", as requested by a FIXME
blanchet
parents:
37575
diff
changeset

375 
 type_of_combterm (CombApp (t1, _)) = result_type (type_of_combterm t1) 
5379f41a1322
merge "Sledgehammer_{F,H}OL_Clause", as requested by a FIXME
blanchet
parents:
37575
diff
changeset

376 

5379f41a1322
merge "Sledgehammer_{F,H}OL_Clause", as requested by a FIXME
blanchet
parents:
37575
diff
changeset

377 
(*gets the head of a combinator application, along with the list of arguments*) 
5379f41a1322
merge "Sledgehammer_{F,H}OL_Clause", as requested by a FIXME
blanchet
parents:
37575
diff
changeset

378 
fun strip_combterm_comb u = 
5379f41a1322
merge "Sledgehammer_{F,H}OL_Clause", as requested by a FIXME
blanchet
parents:
37575
diff
changeset

379 
let fun stripc (CombApp(t,u), ts) = stripc (t, u::ts) 
5379f41a1322
merge "Sledgehammer_{F,H}OL_Clause", as requested by a FIXME
blanchet
parents:
37575
diff
changeset

380 
 stripc x = x 
5379f41a1322
merge "Sledgehammer_{F,H}OL_Clause", as requested by a FIXME
blanchet
parents:
37575
diff
changeset

381 
in stripc(u,[]) end 
5379f41a1322
merge "Sledgehammer_{F,H}OL_Clause", as requested by a FIXME
blanchet
parents:
37575
diff
changeset

382 

5379f41a1322
merge "Sledgehammer_{F,H}OL_Clause", as requested by a FIXME
blanchet
parents:
37575
diff
changeset

383 
fun type_of (Type (a, Ts)) = 
5379f41a1322
merge "Sledgehammer_{F,H}OL_Clause", as requested by a FIXME
blanchet
parents:
37575
diff
changeset

384 
let val (folTypes,ts) = types_of Ts in 
5379f41a1322
merge "Sledgehammer_{F,H}OL_Clause", as requested by a FIXME
blanchet
parents:
37575
diff
changeset

385 
(TyConstr (`make_fixed_type_const a, folTypes), ts) 
5379f41a1322
merge "Sledgehammer_{F,H}OL_Clause", as requested by a FIXME
blanchet
parents:
37575
diff
changeset

386 
end 
5379f41a1322
merge "Sledgehammer_{F,H}OL_Clause", as requested by a FIXME
blanchet
parents:
37575
diff
changeset

387 
 type_of (tp as TFree (a, _)) = (TyFree (`make_fixed_type_var a), [tp]) 
5379f41a1322
merge "Sledgehammer_{F,H}OL_Clause", as requested by a FIXME
blanchet
parents:
37575
diff
changeset

388 
 type_of (tp as TVar (x, _)) = 
5379f41a1322
merge "Sledgehammer_{F,H}OL_Clause", as requested by a FIXME
blanchet
parents:
37575
diff
changeset

389 
(TyVar (make_schematic_type_var x, string_of_indexname x), [tp]) 
5379f41a1322
merge "Sledgehammer_{F,H}OL_Clause", as requested by a FIXME
blanchet
parents:
37575
diff
changeset

390 
and types_of Ts = 
5379f41a1322
merge "Sledgehammer_{F,H}OL_Clause", as requested by a FIXME
blanchet
parents:
37575
diff
changeset

391 
let val (folTyps, ts) = ListPair.unzip (map type_of Ts) in 
5379f41a1322
merge "Sledgehammer_{F,H}OL_Clause", as requested by a FIXME
blanchet
parents:
37575
diff
changeset

392 
(folTyps, union_all ts) 
5379f41a1322
merge "Sledgehammer_{F,H}OL_Clause", as requested by a FIXME
blanchet
parents:
37575
diff
changeset

393 
end 
5379f41a1322
merge "Sledgehammer_{F,H}OL_Clause", as requested by a FIXME
blanchet
parents:
37575
diff
changeset

394 

5379f41a1322
merge "Sledgehammer_{F,H}OL_Clause", as requested by a FIXME
blanchet
parents:
37575
diff
changeset

395 
(* same as above, but no gathering of sort information *) 
5379f41a1322
merge "Sledgehammer_{F,H}OL_Clause", as requested by a FIXME
blanchet
parents:
37575
diff
changeset

396 
fun simp_type_of (Type (a, Ts)) = 
5379f41a1322
merge "Sledgehammer_{F,H}OL_Clause", as requested by a FIXME
blanchet
parents:
37575
diff
changeset

397 
TyConstr (`make_fixed_type_const a, map simp_type_of Ts) 
5379f41a1322
merge "Sledgehammer_{F,H}OL_Clause", as requested by a FIXME
blanchet
parents:
37575
diff
changeset

398 
 simp_type_of (TFree (a, _)) = TyFree (`make_fixed_type_var a) 
5379f41a1322
merge "Sledgehammer_{F,H}OL_Clause", as requested by a FIXME
blanchet
parents:
37575
diff
changeset

399 
 simp_type_of (TVar (x, _)) = 
5379f41a1322
merge "Sledgehammer_{F,H}OL_Clause", as requested by a FIXME
blanchet
parents:
37575
diff
changeset

400 
TyVar (make_schematic_type_var x, string_of_indexname x) 
5379f41a1322
merge "Sledgehammer_{F,H}OL_Clause", as requested by a FIXME
blanchet
parents:
37575
diff
changeset

401 

5379f41a1322
merge "Sledgehammer_{F,H}OL_Clause", as requested by a FIXME
blanchet
parents:
37575
diff
changeset

402 
(* convert a Term.term (with combinators) into a combterm, also accummulate sort info *) 
5379f41a1322
merge "Sledgehammer_{F,H}OL_Clause", as requested by a FIXME
blanchet
parents:
37575
diff
changeset

403 
fun combterm_of thy (Const (c, T)) = 
5379f41a1322
merge "Sledgehammer_{F,H}OL_Clause", as requested by a FIXME
blanchet
parents:
37575
diff
changeset

404 
let 
5379f41a1322
merge "Sledgehammer_{F,H}OL_Clause", as requested by a FIXME
blanchet
parents:
37575
diff
changeset

405 
val (tp, ts) = type_of T 
5379f41a1322
merge "Sledgehammer_{F,H}OL_Clause", as requested by a FIXME
blanchet
parents:
37575
diff
changeset

406 
val tvar_list = 
5379f41a1322
merge "Sledgehammer_{F,H}OL_Clause", as requested by a FIXME
blanchet
parents:
37575
diff
changeset

407 
(if String.isPrefix skolem_theory_name c then 
5379f41a1322
merge "Sledgehammer_{F,H}OL_Clause", as requested by a FIXME
blanchet
parents:
37575
diff
changeset

408 
[] > Term.add_tvarsT T > map TVar 
5379f41a1322
merge "Sledgehammer_{F,H}OL_Clause", as requested by a FIXME
blanchet
parents:
37575
diff
changeset

409 
else 
5379f41a1322
merge "Sledgehammer_{F,H}OL_Clause", as requested by a FIXME
blanchet
parents:
37575
diff
changeset

410 
(c, T) > Sign.const_typargs thy) 
5379f41a1322
merge "Sledgehammer_{F,H}OL_Clause", as requested by a FIXME
blanchet
parents:
37575
diff
changeset

411 
> map simp_type_of 
5379f41a1322
merge "Sledgehammer_{F,H}OL_Clause", as requested by a FIXME
blanchet
parents:
37575
diff
changeset

412 
val c' = CombConst (`make_fixed_const c, tp, tvar_list) 
5379f41a1322
merge "Sledgehammer_{F,H}OL_Clause", as requested by a FIXME
blanchet
parents:
37575
diff
changeset

413 
in (c',ts) end 
5379f41a1322
merge "Sledgehammer_{F,H}OL_Clause", as requested by a FIXME
blanchet
parents:
37575
diff
changeset

414 
 combterm_of _ (Free(v, T)) = 
5379f41a1322
merge "Sledgehammer_{F,H}OL_Clause", as requested by a FIXME
blanchet
parents:
37575
diff
changeset

415 
let val (tp,ts) = type_of T 
5379f41a1322
merge "Sledgehammer_{F,H}OL_Clause", as requested by a FIXME
blanchet
parents:
37575
diff
changeset

416 
val v' = CombConst (`make_fixed_var v, tp, []) 
5379f41a1322
merge "Sledgehammer_{F,H}OL_Clause", as requested by a FIXME
blanchet
parents:
37575
diff
changeset

417 
in (v',ts) end 
5379f41a1322
merge "Sledgehammer_{F,H}OL_Clause", as requested by a FIXME
blanchet
parents:
37575
diff
changeset

418 
 combterm_of _ (Var(v, T)) = 
5379f41a1322
merge "Sledgehammer_{F,H}OL_Clause", as requested by a FIXME
blanchet
parents:
37575
diff
changeset

419 
let val (tp,ts) = type_of T 
5379f41a1322
merge "Sledgehammer_{F,H}OL_Clause", as requested by a FIXME
blanchet
parents:
37575
diff
changeset

420 
val v' = CombVar ((make_schematic_var v, string_of_indexname v), tp) 
5379f41a1322
merge "Sledgehammer_{F,H}OL_Clause", as requested by a FIXME
blanchet
parents:
37575
diff
changeset

421 
in (v',ts) end 
5379f41a1322
merge "Sledgehammer_{F,H}OL_Clause", as requested by a FIXME
blanchet
parents:
37575
diff
changeset

422 
 combterm_of thy (P $ Q) = 
5379f41a1322
merge "Sledgehammer_{F,H}OL_Clause", as requested by a FIXME
blanchet
parents:
37575
diff
changeset

423 
let val (P', tsP) = combterm_of thy P 
5379f41a1322
merge "Sledgehammer_{F,H}OL_Clause", as requested by a FIXME
blanchet
parents:
37575
diff
changeset

424 
val (Q', tsQ) = combterm_of thy Q 
5379f41a1322
merge "Sledgehammer_{F,H}OL_Clause", as requested by a FIXME
blanchet
parents:
37575
diff
changeset

425 
in (CombApp (P', Q'), union (op =) tsP tsQ) end 
37623
295f3a9b44b6
move functions not needed by Metis out of "Metis_Clauses"
blanchet
parents:
37620
diff
changeset

426 
 combterm_of _ (Abs _) = raise Fail "HOL clause: Abs" 
37577
5379f41a1322
merge "Sledgehammer_{F,H}OL_Clause", as requested by a FIXME
blanchet
parents:
37575
diff
changeset

427 

5379f41a1322
merge "Sledgehammer_{F,H}OL_Clause", as requested by a FIXME
blanchet
parents:
37575
diff
changeset

428 
fun predicate_of thy ((@{const Not} $ P), pos) = predicate_of thy (P, not pos) 
5379f41a1322
merge "Sledgehammer_{F,H}OL_Clause", as requested by a FIXME
blanchet
parents:
37575
diff
changeset

429 
 predicate_of thy (t, pos) = (combterm_of thy (Envir.eta_contract t), pos) 
5379f41a1322
merge "Sledgehammer_{F,H}OL_Clause", as requested by a FIXME
blanchet
parents:
37575
diff
changeset

430 

5379f41a1322
merge "Sledgehammer_{F,H}OL_Clause", as requested by a FIXME
blanchet
parents:
37575
diff
changeset

431 
fun literals_of_term1 args thy (@{const Trueprop} $ P) = 
5379f41a1322
merge "Sledgehammer_{F,H}OL_Clause", as requested by a FIXME
blanchet
parents:
37575
diff
changeset

432 
literals_of_term1 args thy P 
5379f41a1322
merge "Sledgehammer_{F,H}OL_Clause", as requested by a FIXME
blanchet
parents:
37575
diff
changeset

433 
 literals_of_term1 args thy (@{const "op "} $ P $ Q) = 
5379f41a1322
merge "Sledgehammer_{F,H}OL_Clause", as requested by a FIXME
blanchet
parents:
37575
diff
changeset

434 
literals_of_term1 (literals_of_term1 args thy P) thy Q 
5379f41a1322
merge "Sledgehammer_{F,H}OL_Clause", as requested by a FIXME
blanchet
parents:
37575
diff
changeset

435 
 literals_of_term1 (lits, ts) thy P = 
5379f41a1322
merge "Sledgehammer_{F,H}OL_Clause", as requested by a FIXME
blanchet
parents:
37575
diff
changeset

436 
let val ((pred, ts'), pol) = predicate_of thy (P, true) in 
5379f41a1322
merge "Sledgehammer_{F,H}OL_Clause", as requested by a FIXME
blanchet
parents:
37575
diff
changeset

437 
(Literal (pol, pred) :: lits, union (op =) ts ts') 
5379f41a1322
merge "Sledgehammer_{F,H}OL_Clause", as requested by a FIXME
blanchet
parents:
37575
diff
changeset

438 
end 
5379f41a1322
merge "Sledgehammer_{F,H}OL_Clause", as requested by a FIXME
blanchet
parents:
37575
diff
changeset

439 
val literals_of_term = literals_of_term1 ([], []) 
5379f41a1322
merge "Sledgehammer_{F,H}OL_Clause", as requested by a FIXME
blanchet
parents:
37575
diff
changeset

440 

5379f41a1322
merge "Sledgehammer_{F,H}OL_Clause", as requested by a FIXME
blanchet
parents:
37575
diff
changeset

441 
fun skolem_name i j num_T_args = 
5379f41a1322
merge "Sledgehammer_{F,H}OL_Clause", as requested by a FIXME
blanchet
parents:
37575
diff
changeset

442 
skolem_prefix ^ (space_implode "_" (map Int.toString [i, j, num_T_args])) ^ 
5379f41a1322
merge "Sledgehammer_{F,H}OL_Clause", as requested by a FIXME
blanchet
parents:
37575
diff
changeset

443 
skolem_infix ^ "g" 
5379f41a1322
merge "Sledgehammer_{F,H}OL_Clause", as requested by a FIXME
blanchet
parents:
37575
diff
changeset

444 

37625
35eeb95c5bee
rename "skolem_somes" to "skolems", now that there's only one flavor of Skolems
blanchet
parents:
37624
diff
changeset

445 
fun conceal_skolem_terms i skolems t = 
37577
5379f41a1322
merge "Sledgehammer_{F,H}OL_Clause", as requested by a FIXME
blanchet
parents:
37575
diff
changeset

446 
if exists_Const (curry (op =) @{const_name skolem_id} o fst) t then 
5379f41a1322
merge "Sledgehammer_{F,H}OL_Clause", as requested by a FIXME
blanchet
parents:
37575
diff
changeset

447 
let 
37625
35eeb95c5bee
rename "skolem_somes" to "skolems", now that there's only one flavor of Skolems
blanchet
parents:
37624
diff
changeset

448 
fun aux skolems 
37577
5379f41a1322
merge "Sledgehammer_{F,H}OL_Clause", as requested by a FIXME
blanchet
parents:
37575
diff
changeset

449 
(t as (Const (@{const_name skolem_id}, Type (_, [_, T])) $ _)) = 
5379f41a1322
merge "Sledgehammer_{F,H}OL_Clause", as requested by a FIXME
blanchet
parents:
37575
diff
changeset

450 
let 
37625
35eeb95c5bee
rename "skolem_somes" to "skolems", now that there's only one flavor of Skolems
blanchet
parents:
37624
diff
changeset

451 
val (skolems, s) = 
37577
5379f41a1322
merge "Sledgehammer_{F,H}OL_Clause", as requested by a FIXME
blanchet
parents:
37575
diff
changeset

452 
if i = ~1 then 
37625
35eeb95c5bee
rename "skolem_somes" to "skolems", now that there's only one flavor of Skolems
blanchet
parents:
37624
diff
changeset

453 
(skolems, @{const_name undefined}) 
35eeb95c5bee
rename "skolem_somes" to "skolems", now that there's only one flavor of Skolems
blanchet
parents:
37624
diff
changeset

454 
else case AList.find (op aconv) skolems t of 
35eeb95c5bee
rename "skolem_somes" to "skolems", now that there's only one flavor of Skolems
blanchet
parents:
37624
diff
changeset

455 
s :: _ => (skolems, s) 
37577
5379f41a1322
merge "Sledgehammer_{F,H}OL_Clause", as requested by a FIXME
blanchet
parents:
37575
diff
changeset

456 
 [] => 
5379f41a1322
merge "Sledgehammer_{F,H}OL_Clause", as requested by a FIXME
blanchet
parents:
37575
diff
changeset

457 
let 
5379f41a1322
merge "Sledgehammer_{F,H}OL_Clause", as requested by a FIXME
blanchet
parents:
37575
diff
changeset

458 
val s = skolem_theory_name ^ "." ^ 
37625
35eeb95c5bee
rename "skolem_somes" to "skolems", now that there's only one flavor of Skolems
blanchet
parents:
37624
diff
changeset

459 
skolem_name i (length skolems) 
37577
5379f41a1322
merge "Sledgehammer_{F,H}OL_Clause", as requested by a FIXME
blanchet
parents:
37575
diff
changeset

460 
(length (Term.add_tvarsT T [])) 
37625
35eeb95c5bee
rename "skolem_somes" to "skolems", now that there's only one flavor of Skolems
blanchet
parents:
37624
diff
changeset

461 
in ((s, t) :: skolems, s) end 
35eeb95c5bee
rename "skolem_somes" to "skolems", now that there's only one flavor of Skolems
blanchet
parents:
37624
diff
changeset

462 
in (skolems, Const (s, T)) end 
35eeb95c5bee
rename "skolem_somes" to "skolems", now that there's only one flavor of Skolems
blanchet
parents:
37624
diff
changeset

463 
 aux skolems (t1 $ t2) = 
37577
5379f41a1322
merge "Sledgehammer_{F,H}OL_Clause", as requested by a FIXME
blanchet
parents:
37575
diff
changeset

464 
let 
37625
35eeb95c5bee
rename "skolem_somes" to "skolems", now that there's only one flavor of Skolems
blanchet
parents:
37624
diff
changeset

465 
val (skolems, t1) = aux skolems t1 
35eeb95c5bee
rename "skolem_somes" to "skolems", now that there's only one flavor of Skolems
blanchet
parents:
37624
diff
changeset

466 
val (skolems, t2) = aux skolems t2 
35eeb95c5bee
rename "skolem_somes" to "skolems", now that there's only one flavor of Skolems
blanchet
parents:
37624
diff
changeset

467 
in (skolems, t1 $ t2) end 
35eeb95c5bee
rename "skolem_somes" to "skolems", now that there's only one flavor of Skolems
blanchet
parents:
37624
diff
changeset

468 
 aux skolems (Abs (s, T, t')) = 
35eeb95c5bee
rename "skolem_somes" to "skolems", now that there's only one flavor of Skolems
blanchet
parents:
37624
diff
changeset

469 
let val (skolems, t') = aux skolems t' in 
35eeb95c5bee
rename "skolem_somes" to "skolems", now that there's only one flavor of Skolems
blanchet
parents:
37624
diff
changeset

470 
(skolems, Abs (s, T, t')) 
37577
5379f41a1322
merge "Sledgehammer_{F,H}OL_Clause", as requested by a FIXME
blanchet
parents:
37575
diff
changeset

471 
end 
37625
35eeb95c5bee
rename "skolem_somes" to "skolems", now that there's only one flavor of Skolems
blanchet
parents:
37624
diff
changeset

472 
 aux skolems t = (skolems, t) 
35eeb95c5bee
rename "skolem_somes" to "skolems", now that there's only one flavor of Skolems
blanchet
parents:
37624
diff
changeset

473 
in aux skolems t end 
37577
5379f41a1322
merge "Sledgehammer_{F,H}OL_Clause", as requested by a FIXME
blanchet
parents:
37575
diff
changeset

474 
else 
37625
35eeb95c5bee
rename "skolem_somes" to "skolems", now that there's only one flavor of Skolems
blanchet
parents:
37624
diff
changeset

475 
(skolems, t) 
37577
5379f41a1322
merge "Sledgehammer_{F,H}OL_Clause", as requested by a FIXME
blanchet
parents:
37575
diff
changeset

476 

37632  477 
fun reveal_skolem_terms skolems = 
478 
map_aterms (fn t as Const (s, _) => 

479 
if String.isPrefix skolem_theory_name s then 

480 
AList.lookup (op =) skolems s > the 

481 
> map_types Type_Infer.paramify_vars 

482 
else 

483 
t 

484 
 t => t) 

485 

37577
5379f41a1322
merge "Sledgehammer_{F,H}OL_Clause", as requested by a FIXME
blanchet
parents:
37575
diff
changeset

486 

5379f41a1322
merge "Sledgehammer_{F,H}OL_Clause", as requested by a FIXME
blanchet
parents:
37575
diff
changeset

487 
(***************************************************************) 
5379f41a1322
merge "Sledgehammer_{F,H}OL_Clause", as requested by a FIXME
blanchet
parents:
37575
diff
changeset

488 
(* Type Classes Present in the Axiom or Conjecture Clauses *) 
5379f41a1322
merge "Sledgehammer_{F,H}OL_Clause", as requested by a FIXME
blanchet
parents:
37575
diff
changeset

489 
(***************************************************************) 
5379f41a1322
merge "Sledgehammer_{F,H}OL_Clause", as requested by a FIXME
blanchet
parents:
37575
diff
changeset

490 

5379f41a1322
merge "Sledgehammer_{F,H}OL_Clause", as requested by a FIXME
blanchet
parents:
37575
diff
changeset

491 
fun set_insert (x, s) = Symtab.update (x, ()) s 
5379f41a1322
merge "Sledgehammer_{F,H}OL_Clause", as requested by a FIXME
blanchet
parents:
37575
diff
changeset

492 

5379f41a1322
merge "Sledgehammer_{F,H}OL_Clause", as requested by a FIXME
blanchet
parents:
37575
diff
changeset

493 
fun add_classes (sorts, cset) = List.foldl set_insert cset (flat sorts) 
5379f41a1322
merge "Sledgehammer_{F,H}OL_Clause", as requested by a FIXME
blanchet
parents:
37575
diff
changeset

494 

5379f41a1322
merge "Sledgehammer_{F,H}OL_Clause", as requested by a FIXME
blanchet
parents:
37575
diff
changeset

495 
(*Remove this trivial type class*) 
5379f41a1322
merge "Sledgehammer_{F,H}OL_Clause", as requested by a FIXME
blanchet
parents:
37575
diff
changeset

496 
fun delete_type cset = Symtab.delete_safe (the_single @{sort HOL.type}) cset; 
5379f41a1322
merge "Sledgehammer_{F,H}OL_Clause", as requested by a FIXME
blanchet
parents:
37575
diff
changeset

497 

5379f41a1322
merge "Sledgehammer_{F,H}OL_Clause", as requested by a FIXME
blanchet
parents:
37575
diff
changeset

498 
fun tfree_classes_of_terms ts = 
5379f41a1322
merge "Sledgehammer_{F,H}OL_Clause", as requested by a FIXME
blanchet
parents:
37575
diff
changeset

499 
let val sorts_list = map (map #2 o OldTerm.term_tfrees) ts 
5379f41a1322
merge "Sledgehammer_{F,H}OL_Clause", as requested by a FIXME
blanchet
parents:
37575
diff
changeset

500 
in Symtab.keys (delete_type (List.foldl add_classes Symtab.empty sorts_list)) end; 
5379f41a1322
merge "Sledgehammer_{F,H}OL_Clause", as requested by a FIXME
blanchet
parents:
37575
diff
changeset

501 

5379f41a1322
merge "Sledgehammer_{F,H}OL_Clause", as requested by a FIXME
blanchet
parents:
37575
diff
changeset

502 
fun tvar_classes_of_terms ts = 
5379f41a1322
merge "Sledgehammer_{F,H}OL_Clause", as requested by a FIXME
blanchet
parents:
37575
diff
changeset

503 
let val sorts_list = map (map #2 o OldTerm.term_tvars) ts 
5379f41a1322
merge "Sledgehammer_{F,H}OL_Clause", as requested by a FIXME
blanchet
parents:
37575
diff
changeset

504 
in Symtab.keys (delete_type (List.foldl add_classes Symtab.empty sorts_list)) end; 
5379f41a1322
merge "Sledgehammer_{F,H}OL_Clause", as requested by a FIXME
blanchet
parents:
37575
diff
changeset

505 

5379f41a1322
merge "Sledgehammer_{F,H}OL_Clause", as requested by a FIXME
blanchet
parents:
37575
diff
changeset

506 
(*fold type constructors*) 
5379f41a1322
merge "Sledgehammer_{F,H}OL_Clause", as requested by a FIXME
blanchet
parents:
37575
diff
changeset

507 
fun fold_type_consts f (Type (a, Ts)) x = fold (fold_type_consts f) Ts (f (a,x)) 
5379f41a1322
merge "Sledgehammer_{F,H}OL_Clause", as requested by a FIXME
blanchet
parents:
37575
diff
changeset

508 
 fold_type_consts _ _ x = x; 
5379f41a1322
merge "Sledgehammer_{F,H}OL_Clause", as requested by a FIXME
blanchet
parents:
37575
diff
changeset

509 

5379f41a1322
merge "Sledgehammer_{F,H}OL_Clause", as requested by a FIXME
blanchet
parents:
37575
diff
changeset

510 
(*Type constructors used to instantiate overloaded constants are the only ones needed.*) 
5379f41a1322
merge "Sledgehammer_{F,H}OL_Clause", as requested by a FIXME
blanchet
parents:
37575
diff
changeset

511 
fun add_type_consts_in_term thy = 
5379f41a1322
merge "Sledgehammer_{F,H}OL_Clause", as requested by a FIXME
blanchet
parents:
37575
diff
changeset

512 
let 
5379f41a1322
merge "Sledgehammer_{F,H}OL_Clause", as requested by a FIXME
blanchet
parents:
37575
diff
changeset

513 
val const_typargs = Sign.const_typargs thy 
5379f41a1322
merge "Sledgehammer_{F,H}OL_Clause", as requested by a FIXME
blanchet
parents:
37575
diff
changeset

514 
fun aux (Const x) = fold (fold_type_consts set_insert) (const_typargs x) 
5379f41a1322
merge "Sledgehammer_{F,H}OL_Clause", as requested by a FIXME
blanchet
parents:
37575
diff
changeset

515 
 aux (Abs (_, _, u)) = aux u 
5379f41a1322
merge "Sledgehammer_{F,H}OL_Clause", as requested by a FIXME
blanchet
parents:
37575
diff
changeset

516 
 aux (Const (@{const_name skolem_id}, _) $ _) = I 
5379f41a1322
merge "Sledgehammer_{F,H}OL_Clause", as requested by a FIXME
blanchet
parents:
37575
diff
changeset

517 
 aux (t $ u) = aux t #> aux u 
5379f41a1322
merge "Sledgehammer_{F,H}OL_Clause", as requested by a FIXME
blanchet
parents:
37575
diff
changeset

518 
 aux _ = I 
5379f41a1322
merge "Sledgehammer_{F,H}OL_Clause", as requested by a FIXME
blanchet
parents:
37575
diff
changeset

519 
in aux end 
5379f41a1322
merge "Sledgehammer_{F,H}OL_Clause", as requested by a FIXME
blanchet
parents:
37575
diff
changeset

520 

5379f41a1322
merge "Sledgehammer_{F,H}OL_Clause", as requested by a FIXME
blanchet
parents:
37575
diff
changeset

521 
fun type_consts_of_terms thy ts = 
5379f41a1322
merge "Sledgehammer_{F,H}OL_Clause", as requested by a FIXME
blanchet
parents:
37575
diff
changeset

522 
Symtab.keys (fold (add_type_consts_in_term thy) ts Symtab.empty); 
5379f41a1322
merge "Sledgehammer_{F,H}OL_Clause", as requested by a FIXME
blanchet
parents:
37575
diff
changeset

523 

15347  524 
end; 