author | wenzelm |
Fri, 21 May 2004 21:26:19 +0200 | |
changeset 14790 | 0d984ee030a1 |
parent 13666 | a2730043029b |
child 14830 | faa4865ba1ce |
permissions | -rw-r--r-- |
256 | 1 |
(* Title: Pure/type.ML |
0 | 2 |
ID: $Id$ |
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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3 |
Author: Tobias Nipkow, Lawrence C Paulson, and Markus Wenzel |
0 | 4 |
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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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5 |
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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matching and unification of types, extend and merge type signatures. |
0 | 7 |
*) |
8 |
||
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signature TYPE = |
|
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sig |
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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(*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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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 | |
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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Abbreviation of string list * typ | |
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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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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type tsig |
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 rep_tsig: tsig -> |
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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{classes: Sorts.classes, |
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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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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;
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types: (decl * stamp) Symtab.table, |
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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arities: Sorts.arities, |
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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log_types: 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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witness: (typ * sort) option} |
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 empty_tsig: tsig |
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 classes: tsig -> class 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 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 universal_witness: tsig -> (typ * sort) option |
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;
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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;
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val of_sort: tsig -> typ * 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;
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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;
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val cert_sort: tsig -> sort -> 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 witness_sorts: tsig -> sort list -> sort list -> (typ * sort) 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 norm_typ: tsig -> typ -> typ |
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 cert_typ: tsig -> typ -> typ |
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 cert_typ_syntax: tsig -> typ -> typ |
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 cert_typ_raw: tsig -> typ -> typ |
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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|
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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(*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:
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val strip_sorts: typ -> typ |
621 | 42 |
val no_tvars: typ -> typ |
43 |
val varifyT: typ -> typ |
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val unvarifyT: typ -> typ |
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val varify: term * string list -> term * (string * indexname) list |
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val freeze_thaw_type : typ -> typ * (typ -> typ) |
3411
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Removal of freeze_vars and thaw_vars. New freeze_thaw
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val freeze_thaw : term -> term * (term -> term) |
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|
14790
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(*matching and unification*) |
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 inst_term_tvars: tsig -> (indexname * typ) list -> term -> term |
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 inst_typ_tvars: tsig -> (indexname * typ) list -> typ -> typ |
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exception TYPE_MATCH |
14790
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val typ_match: tsig -> typ Vartab.table * (typ * typ) -> typ Vartab.table |
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 typ_instance: tsig -> typ * typ -> bool |
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exception TUNIFY |
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val unify: tsig -> typ Vartab.table * int -> typ * typ -> typ Vartab.table * int |
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val raw_unify: typ * typ -> bool |
0 | 58 |
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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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(*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;
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val add_classes: (class * class list) list -> tsig -> tsig |
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 add_classrel: (class * class) list -> tsig -> tsig |
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 set_defsort: sort -> tsig -> tsig |
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 add_types: (string * int) list -> tsig -> tsig |
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 add_abbrs: (string * string list * typ) list -> tsig -> tsig |
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val add_nonterminals: string list -> tsig -> tsig |
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val add_arities: (string * sort list * sort) list -> tsig -> tsig |
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val merge_tsigs: tsig * tsig -> tsig |
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end; |
69 |
||
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structure Type: TYPE = |
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struct |
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||
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(** type signatures and certified types **) |
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(* type declarations *) |
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datatype decl = |
0d984ee030a1
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LogicalType of int | |
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Abbreviation of string list * typ | |
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Nonterminal; |
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fun str_of_decl (LogicalType _) = "logical type constructor" |
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| str_of_decl (Abbreviation _) = "type abbreviation" |
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| str_of_decl Nonterminal = "syntactic type"; |
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85 |
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86 |
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87 |
(* type tsig *) |
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89 |
datatype tsig = |
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90 |
TSig of { |
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classes: Sorts.classes, (*declared classes with proper subclass relation*) |
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default: sort, (*default sort on input*) |
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types: (decl * stamp) Symtab.table, (*declared types*) |
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arities: Sorts.arities, (*image specification of types wrt. sorts*) |
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95 |
log_types: string list, (*logical types sorted by number of arguments*) |
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witness: (typ * sort) option}; (*witness for non-emptiness of strictest sort*) |
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97 |
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98 |
fun rep_tsig (TSig comps) = comps; |
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99 |
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100 |
fun make_tsig (classes, default, types, arities, log_types, witness) = |
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101 |
TSig {classes = classes, default = default, types = types, arities = arities, |
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log_types = log_types, witness = witness}; |
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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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103 |
|
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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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104 |
fun map_tsig f (TSig {classes, default, types, arities, log_types, witness}) = |
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105 |
make_tsig (f (classes, default, types, arities, log_types, witness)); |
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106 |
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107 |
fun build_tsig (classes, default, types, arities) = |
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108 |
let |
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109 |
fun add_log_type (ts, (c, (LogicalType n, _))) = (c, n) :: ts |
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110 |
| add_log_type (ts, _) = ts; |
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111 |
val log_types = |
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112 |
Symtab.foldl add_log_type ([], types) |
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113 |
|> Library.sort (Library.int_ord o pairself #2) |> map #1; |
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114 |
val witness = |
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115 |
(case Sorts.witness_sorts (classes, arities) log_types [] [Graph.keys classes] of |
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116 |
[w] => Some w | _ => None); |
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117 |
in make_tsig (classes, default, types, arities, log_types, witness) end; |
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118 |
|
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119 |
fun change_tsig f (TSig {classes, default, types, arities, log_types = _, witness = _}) = |
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120 |
build_tsig (f (classes, default, types, arities)); |
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121 |
|
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122 |
val empty_tsig = build_tsig (Graph.empty, [], Symtab.empty, Symtab.empty); |
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123 |
|
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124 |
|
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125 |
(* classes and sorts *) |
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126 |
|
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127 |
fun classes (TSig {classes = C, ...}) = Graph.keys C; |
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128 |
fun defaultS (TSig {default, ...}) = default; |
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129 |
fun logical_types (TSig {log_types, ...}) = log_types; |
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130 |
fun universal_witness (TSig {witness, ...}) = witness; |
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131 |
|
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132 |
fun eq_sort (TSig {classes, ...}) = Sorts.sort_eq classes; |
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133 |
fun subsort (TSig {classes, ...}) = Sorts.sort_le classes; |
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134 |
fun of_sort (TSig {classes, arities, ...}) = Sorts.of_sort (classes, arities); |
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135 |
fun norm_sort (TSig {classes, ...}) = Sorts.norm_sort classes; |
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136 |
|
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137 |
fun cert_class (TSig {classes, ...}) c = |
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138 |
if can (Graph.get_node classes) c then c |
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139 |
else raise TYPE ("Undeclared class: " ^ quote c, [], []); |
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140 |
|
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141 |
fun cert_sort tsig = norm_sort tsig o map (cert_class tsig); |
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142 |
|
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143 |
fun witness_sorts (tsig as TSig {classes, arities, log_types, ...}) = |
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144 |
Sorts.witness_sorts (classes, arities) log_types; |
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145 |
|
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146 |
|
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147 |
(* certified types *) |
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148 |
|
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149 |
fun bad_nargs t = "Bad number of arguments for type constructor: " ^ quote t; |
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150 |
|
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151 |
fun inst_typ tye = |
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152 |
let |
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153 |
fun inst (var as (v, _)) = |
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154 |
(case assoc_string_int (tye, v) of |
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155 |
Some U => inst_typ tye U |
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156 |
| None => TVar var); |
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157 |
in map_type_tvar inst end; |
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158 |
|
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159 |
(*expand type abbreviations and normalize sorts*) |
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160 |
fun norm_typ (tsig as TSig {types, ...}) ty = |
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161 |
let |
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162 |
val idx = Term.maxidx_of_typ ty + 1; |
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|
163 |
|
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164 |
fun norm (Type (a, Ts)) = |
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165 |
(case Symtab.lookup (types, a) of |
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166 |
Some (Abbreviation (vs, U), _) => |
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167 |
norm (inst_typ (map (rpair idx) vs ~~ Ts) (incr_tvar idx U)) |
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168 |
| _ => Type (a, map norm Ts)) |
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169 |
| norm (TFree (x, S)) = TFree (x, norm_sort tsig S) |
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170 |
| norm (TVar (xi, S)) = TVar (xi, norm_sort tsig S); |
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171 |
|
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172 |
val ty' = norm ty; |
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173 |
in if ty = ty' then ty else ty' end; (*avoid copying of already normal type*) |
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|
174 |
|
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175 |
(*check validity of (not necessarily normal) type*) (*exception TYPE*) |
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176 |
fun certify_typ normalize syntax tsig ty = |
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177 |
let |
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178 |
val TSig {types, ...} = tsig; |
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179 |
fun err msg = raise TYPE (msg, [ty], []); |
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|
180 |
|
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181 |
fun check_sort S = (map (cert_class tsig) S; ()); |
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182 |
|
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183 |
fun check_typ (Type (c, Ts)) = |
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184 |
let fun nargs n = if length Ts <> n then err (bad_nargs c) else () in |
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185 |
(case Symtab.lookup (types, c) of |
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186 |
Some (LogicalType n, _) => nargs n |
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187 |
| Some (Abbreviation (vs, _), _) => nargs (length vs) |
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188 |
| Some (Nonterminal, _) => nargs 0 |
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189 |
| None => err ("Undeclared type constructor: " ^ quote c)); |
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190 |
seq check_typ Ts |
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191 |
end |
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192 |
| check_typ (TFree (_, S)) = check_sort S |
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193 |
| check_typ (TVar ((x, i), S)) = |
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194 |
if i < 0 then err ("Malformed type variable: " ^ quote (Term.string_of_vname (x, i))) |
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195 |
else check_sort S; |
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196 |
|
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197 |
fun no_syntax (Type (c, Ts)) = |
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198 |
(case Symtab.lookup (types, c) of |
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199 |
Some (Nonterminal, _) => |
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200 |
err ("Illegal occurrence of syntactic type: " ^ quote c) |
0d984ee030a1
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201 |
| _ => seq no_syntax Ts) |
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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|
202 |
| no_syntax _ = (); |
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|
203 |
|
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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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|
204 |
val _ = check_typ ty; |
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|
205 |
val ty' = if normalize orelse not syntax then norm_typ tsig ty else 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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|
206 |
val _ = if not syntax then no_syntax ty' else (); |
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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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|
207 |
in ty' end; |
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208 |
|
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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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|
209 |
val cert_typ = certify_typ true false; |
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210 |
val cert_typ_syntax = certify_typ true true; |
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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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|
211 |
val cert_typ_raw = certify_typ false true; |
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|
212 |
|
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|
213 |
|
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|
214 |
|
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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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|
215 |
(** special treatment of type vars **) |
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216 |
|
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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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|
217 |
(* strip_sorts *) |
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218 |
|
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|
219 |
fun strip_sorts (Type (a, Ts)) = Type (a, map strip_sorts Ts) |
0d984ee030a1
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220 |
| strip_sorts (TFree (x, _)) = TFree (x, []) |
0d984ee030a1
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|
221 |
| strip_sorts (TVar (xi, _)) = TVar (xi, []); |
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|
222 |
|
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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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|
223 |
|
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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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|
224 |
(* no_tvars *) |
621 | 225 |
|
226 |
fun no_tvars T = |
|
12501 | 227 |
(case typ_tvars T of [] => T |
228 |
| vs => raise TYPE ("Illegal schematic type variable(s): " ^ |
|
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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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|
229 |
commas (map (Term.string_of_vname o #1) vs), [T], [])); |
621 | 230 |
|
7641 | 231 |
|
2964 | 232 |
(* varify, unvarify *) |
621 | 233 |
|
2964 | 234 |
val varifyT = map_type_tfree (fn (a, S) => TVar ((a, 0), S)); |
235 |
||
621 | 236 |
fun unvarifyT (Type (a, Ts)) = Type (a, map unvarifyT Ts) |
237 |
| unvarifyT (TVar ((a, 0), S)) = TFree (a, S) |
|
238 |
| unvarifyT T = T; |
|
239 |
||
240 |
fun varify (t, fixed) = |
|
241 |
let |
|
242 |
val fs = add_term_tfree_names (t, []) \\ fixed; |
|
243 |
val ixns = add_term_tvar_ixns (t, []); |
|
12501 | 244 |
val fmap = fs ~~ map (rpair 0) (variantlist (fs, map #1 ixns)) |
2964 | 245 |
fun thaw (f as (a, S)) = |
246 |
(case assoc (fmap, a) of |
|
247 |
None => TFree f |
|
12501 | 248 |
| Some b => TVar (b, S)); |
249 |
in (map_term_types (map_type_tfree thaw) t, fmap) end; |
|
2964 | 250 |
|
251 |
||
7641 | 252 |
(* freeze_thaw: freeze TVars in a term; return the "thaw" inverse *) |
3411
163f8f4a42d7
Removal of freeze_vars and thaw_vars. New freeze_thaw
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|
253 |
|
7641 | 254 |
local |
255 |
||
256 |
fun new_name (ix, (pairs,used)) = |
|
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Removal of freeze_vars and thaw_vars. New freeze_thaw
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|
257 |
let val v = variant used (string_of_indexname ix) |
163f8f4a42d7
Removal of freeze_vars and thaw_vars. New freeze_thaw
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|
258 |
in ((ix,v)::pairs, v::used) end; |
621 | 259 |
|
7641 | 260 |
fun freeze_one alist (ix,sort) = |
3790 | 261 |
TFree (the (assoc (alist, ix)), sort) |
4142 | 262 |
handle OPTION => |
3790 | 263 |
raise TYPE ("Failure during freezing of ?" ^ string_of_indexname ix, [], []); |
2964 | 264 |
|
7641 | 265 |
fun thaw_one alist (a,sort) = TVar (the (assoc (alist,a)), sort) |
4142 | 266 |
handle OPTION => TFree(a,sort); |
416 | 267 |
|
10495 | 268 |
in |
269 |
||
270 |
(*this sort of code could replace unvarifyT*) |
|
7641 | 271 |
fun freeze_thaw_type T = |
272 |
let |
|
273 |
val used = add_typ_tfree_names (T, []) |
|
274 |
and tvars = map #1 (add_typ_tvars (T, [])); |
|
275 |
val (alist, _) = foldr new_name (tvars, ([], used)); |
|
276 |
in (map_type_tvar (freeze_one alist) T, map_type_tfree (thaw_one (map swap alist))) end; |
|
277 |
||
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163f8f4a42d7
Removal of freeze_vars and thaw_vars. New freeze_thaw
paulson
parents:
3175
diff
changeset
|
278 |
fun freeze_thaw t = |
7641 | 279 |
let |
280 |
val used = it_term_types add_typ_tfree_names (t, []) |
|
281 |
and tvars = map #1 (it_term_types add_typ_tvars (t, [])); |
|
282 |
val (alist, _) = foldr new_name (tvars, ([], used)); |
|
283 |
in |
|
284 |
(case alist of |
|
285 |
[] => (t, fn x => x) (*nothing to do!*) |
|
286 |
| _ => (map_term_types (map_type_tvar (freeze_one alist)) t, |
|
287 |
map_term_types (map_type_tfree (thaw_one (map swap alist))))) |
|
288 |
end; |
|
289 |
||
290 |
end; |
|
291 |
||
256 | 292 |
|
293 |
||
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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
|
294 |
(** matching and unification of types **) |
8899 | 295 |
|
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
|
296 |
(* instantiation *) |
256 | 297 |
|
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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
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changeset
|
298 |
fun type_of_sort tsig (T, S) = |
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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changeset
|
299 |
if of_sort tsig (T, S) then T |
3790 | 300 |
else raise TYPE ("Type not of sort " ^ Sorts.str_of_sort S, [T], []); |
0 | 301 |
|
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
|
302 |
fun inst_typ_tvars tsig tye = |
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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diff
changeset
|
303 |
let |
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
|
304 |
fun inst (var as (v, S)) = |
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
|
305 |
(case assoc_string_int (tye, v) of |
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
|
306 |
Some U => type_of_sort tsig (U, S) |
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
|
307 |
| None => TVar var); |
949
83c588d6fee9
Changed treatment of during type inference internally generated type
nipkow
parents:
621
diff
changeset
|
308 |
in map_type_tvar inst end; |
0 | 309 |
|
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
|
310 |
fun inst_term_tvars _ [] t = t |
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 |
| inst_term_tvars tsig tye t = map_term_types (inst_typ_tvars tsig tye) t; |
0 | 312 |
|
313 |
||
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
|
314 |
(* matching *) |
0 | 315 |
|
2964 | 316 |
exception TYPE_MATCH; |
0 | 317 |
|
2964 | 318 |
fun typ_match tsig = |
319 |
let |
|
320 |
fun match (subs, (TVar (v, S), T)) = |
|
8406
a217b0cd304d
Type.unify and Type.typ_match now use Vartab instead of association lists.
berghofe
parents:
7641
diff
changeset
|
321 |
(case Vartab.lookup (subs, v) of |
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
|
322 |
None => (Vartab.update_new ((v, type_of_sort tsig (T, S)), subs) |
2964 | 323 |
handle TYPE _ => raise TYPE_MATCH) |
324 |
| Some U => if U = T then subs else raise TYPE_MATCH) |
|
325 |
| match (subs, (Type (a, Ts), Type (b, Us))) = |
|
326 |
if a <> b then raise TYPE_MATCH |
|
327 |
else foldl match (subs, Ts ~~ Us) |
|
328 |
| match (subs, (TFree x, TFree y)) = |
|
329 |
if x = y then subs else raise TYPE_MATCH |
|
330 |
| match _ = raise TYPE_MATCH; |
|
331 |
in match end; |
|
0 | 332 |
|
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
|
333 |
fun typ_instance tsig (T, U) = |
8406
a217b0cd304d
Type.unify and Type.typ_match now use Vartab instead of association lists.
berghofe
parents:
7641
diff
changeset
|
334 |
(typ_match tsig (Vartab.empty, (U, T)); true) handle TYPE_MATCH => false; |
2964 | 335 |
|
0 | 336 |
|
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
|
337 |
(* unification *) |
2964 | 338 |
|
0 | 339 |
exception TUNIFY; |
340 |
||
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
|
341 |
(*occurs_check*) |
2964 | 342 |
fun occurs v tye = |
343 |
let |
|
344 |
fun occ (Type (_, Ts)) = exists occ Ts |
|
345 |
| occ (TFree _) = false |
|
346 |
| occ (TVar (w, _)) = |
|
347 |
eq_ix (v, w) orelse |
|
8406
a217b0cd304d
Type.unify and Type.typ_match now use Vartab instead of association lists.
berghofe
parents:
7641
diff
changeset
|
348 |
(case Vartab.lookup (tye, w) of |
2964 | 349 |
None => false |
350 |
| Some U => occ U); |
|
0 | 351 |
in occ end; |
352 |
||
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
|
353 |
(*chase variable assignments; if devar returns a type var then it must be unassigned*) |
2964 | 354 |
fun devar (T as TVar (v, _), tye) = |
8406
a217b0cd304d
Type.unify and Type.typ_match now use Vartab instead of association lists.
berghofe
parents:
7641
diff
changeset
|
355 |
(case Vartab.lookup (tye, v) of |
2964 | 356 |
Some U => devar (U, tye) |
357 |
| None => T) |
|
256 | 358 |
| devar (T, tye) = T; |
0 | 359 |
|
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
|
360 |
fun unify (tsig as TSig {classes, arities, ...}) (tyenv, maxidx) TU = |
2964 | 361 |
let |
362 |
val tyvar_count = ref maxidx; |
|
363 |
fun gen_tyvar S = TVar (("'a", inc tyvar_count), S); |
|
364 |
||
365 |
fun mg_domain a 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
|
366 |
Sorts.mg_domain (classes, arities) a S handle Sorts.DOMAIN _ => raise TUNIFY; |
2964 | 367 |
|
368 |
fun meet ((_, []), tye) = tye |
|
369 |
| 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
|
370 |
if Sorts.sort_le classes (S', S) then tye |
13666
a2730043029b
Removed add_env because Vartab.map was too slow for large environments.
berghofe
parents:
12726
diff
changeset
|
371 |
else Vartab.update_new ((xi, |
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
|
372 |
gen_tyvar (Sorts.inter_sort classes (S', S))), tye) |
2964 | 373 |
| 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
|
374 |
if Sorts.sort_le classes (S', S) then tye |
2964 | 375 |
else raise TUNIFY |
376 |
| meet ((Type (a, Ts), S), tye) = meets ((Ts, mg_domain a S), tye) |
|
377 |
and meets (([], []), tye) = tye |
|
378 |
| meets ((T :: Ts, S :: Ss), tye) = |
|
379 |
meets ((Ts, Ss), meet ((devar (T, tye), S), tye)) |
|
380 |
| meets _ = sys_error "meets"; |
|
381 |
||
382 |
fun unif ((ty1, ty2), tye) = |
|
383 |
(case (devar (ty1, tye), devar (ty2, tye)) of |
|
384 |
(T as TVar (v, S1), U as TVar (w, S2)) => |
|
385 |
if eq_ix (v, w) then 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
|
386 |
else if Sorts.sort_le classes (S1, S2) then |
13666
a2730043029b
Removed add_env because Vartab.map was too slow for large environments.
berghofe
parents:
12726
diff
changeset
|
387 |
Vartab.update_new ((w, 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
|
388 |
else if Sorts.sort_le classes (S2, S1) then |
13666
a2730043029b
Removed add_env because Vartab.map was too slow for large environments.
berghofe
parents:
12726
diff
changeset
|
389 |
Vartab.update_new ((v, U), tye) |
2964 | 390 |
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
|
391 |
let val S = gen_tyvar (Sorts.inter_sort classes (S1, S2)) in |
13666
a2730043029b
Removed add_env because Vartab.map was too slow for large environments.
berghofe
parents:
12726
diff
changeset
|
392 |
Vartab.update_new ((v, S), Vartab.update_new ((w, S), tye)) |
2964 | 393 |
end |
394 |
| (TVar (v, S), T) => |
|
395 |
if occurs v tye T then raise TUNIFY |
|
13666
a2730043029b
Removed add_env because Vartab.map was too slow for large environments.
berghofe
parents:
12726
diff
changeset
|
396 |
else meet ((T, S), Vartab.update_new ((v, T), tye)) |
2964 | 397 |
| (T, TVar (v, S)) => |
398 |
if occurs v tye T then raise TUNIFY |
|
13666
a2730043029b
Removed add_env because Vartab.map was too slow for large environments.
berghofe
parents:
12726
diff
changeset
|
399 |
else meet ((T, S), Vartab.update_new ((v, T), tye)) |
2964 | 400 |
| (Type (a, Ts), Type (b, Us)) => |
401 |
if a <> b then raise TUNIFY |
|
402 |
else foldr unif (Ts ~~ Us, tye) |
|
403 |
| (T, U) => if T = U then tye else raise TUNIFY); |
|
12528 | 404 |
in (unif (TU, tyenv), ! tyvar_count) end; |
0 | 405 |
|
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
|
406 |
(*purely structural unification *) |
450 | 407 |
fun raw_unify (ty1, ty2) = |
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
|
408 |
(unify empty_tsig (Vartab.empty, 0) (strip_sorts ty1, strip_sorts ty2); true) |
450 | 409 |
handle TUNIFY => false; |
410 |
||
411 |
||
0 | 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 |
(** 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
|
414 |
|
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
|
415 |
(* arities *) |
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
|
416 |
|
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
|
417 |
local |
1435
aefcd255ed4a
Removed bug in type unification. Negative indexes are not used any longer.
nipkow
parents:
1392
diff
changeset
|
418 |
|
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
|
419 |
fun err_decl t decl = error ("Illegal " ^ str_of_decl decl ^ ": " ^ quote t); |
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
|
420 |
fun err_undecl t = error ("Undeclared type constructor: " ^ quote t); |
3790 | 421 |
|
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
|
422 |
fun err_conflict t (c1, c2) (c, Ss) (c', Ss') = |
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
|
423 |
error ("Conflict of type arities for classes " ^ quote c1 ^ " < " ^ quote c2 ^ ":\n " ^ |
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
|
424 |
Sorts.str_of_arity (t, Ss, [c]) ^ " and\n " ^ |
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
|
425 |
Sorts.str_of_arity (t, Ss', [c'])); |
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 |
|
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
|
427 |
fun coregular C t (c, Ss) ars = |
3790 | 428 |
let |
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
|
429 |
fun conflict (c', Ss') = |
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
|
430 |
if Sorts.class_le C (c, c') andalso not (Sorts.sorts_le C (Ss, Ss')) then |
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
|
431 |
Some ((c, c'), (c', Ss')) |
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
|
432 |
else if Sorts.class_le C (c', c) andalso not (Sorts.sorts_le C (Ss', Ss)) then |
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
|
433 |
Some ((c', c), (c', Ss')) |
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
|
434 |
else None; |
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
|
435 |
in |
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
|
436 |
(case Library.get_first conflict ars of |
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
|
437 |
Some ((c1, c2), (c', Ss')) => err_conflict t (c1, c2) (c, Ss) (c', Ss') |
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
|
438 |
| None => (c, Ss) :: ars) |
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
|
439 |
end; |
3790 | 440 |
|
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
|
441 |
fun insert C t ((c, Ss), ars) = |
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
|
442 |
(case assoc_string (ars, c) of |
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
|
443 |
None => coregular C t (c, Ss) ars |
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
|
444 |
| Some Ss' => |
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
|
445 |
if Sorts.sorts_le C (Ss, Ss') then ars |
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
|
446 |
else if Sorts.sorts_le C (Ss', Ss) |
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
|
447 |
then coregular C t (c, Ss) (ars \ (c, Ss')) |
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 |
else coregular C t (c, Ss) ars); |
2587 | 449 |
|
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
|
450 |
fun complete C (c, Ss) = map (rpair Ss) (Graph.all_succs C [c]); |
3790 | 451 |
|
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
|
452 |
fun insert_arities classes (arities, (t, ars)) = |
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
|
453 |
let val ars' = |
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
|
454 |
Symtab.lookup_multi (arities, t) |
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
|
455 |
|> curry (foldr (insert classes t)) (flat (map (complete classes) ars)) |
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
|
456 |
in Symtab.update ((t, ars'), arities) end; |
3790 | 457 |
|
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
|
458 |
fun insert_table classes = Symtab.foldl (fn (arities, (t, ars)) => |
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
|
459 |
insert_arities classes (arities, (t, map (apsnd (map (Sorts.norm_sort classes))) ars))); |
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
|
460 |
|
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
|
461 |
in |
2587 | 462 |
|
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
|
463 |
fun add_arities decls tsig = tsig |> change_tsig (fn (classes, default, types, arities) => |
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
|
464 |
let |
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
|
465 |
fun prep (t, Ss, S) = |
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
|
466 |
(case Symtab.lookup (types, t) of |
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
|
467 |
Some (LogicalType n, _) => |
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
|
468 |
if length Ss = n then |
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
|
469 |
(t, map (cert_sort tsig) Ss, cert_sort tsig S) |
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
|
470 |
handle TYPE (msg, _, _) => error msg |
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
|
471 |
else error (bad_nargs t) |
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
|
472 |
| Some (decl, _) => err_decl t 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;
wenzelm
parents:
13666
diff
changeset
|
473 |
| None => err_undecl t); |
4603 | 474 |
|
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
|
475 |
val ars = decls |> map ((fn (t, Ss, S) => (t, map (fn c => (c, Ss)) S)) o prep); |
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
|
476 |
val arities' = foldl (insert_arities classes) (arities, ars); |
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
|
477 |
in (classes, default, types, arities') end); |
12528 | 478 |
|
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
|
479 |
fun rebuild_arities classes arities = |
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
|
480 |
insert_table classes (Symtab.empty, arities); |
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 |
|
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
|
482 |
fun merge_arities classes (arities1, arities2) = |
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
|
483 |
insert_table classes (insert_table classes (Symtab.empty, arities1), arities2); |
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
|
484 |
|
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
|
485 |
end; |
4603 | 486 |
|
487 |
||
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
|
488 |
(* 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
|
489 |
|
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
|
490 |
local |
0 | 491 |
|
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
|
492 |
fun err_dup_classes cs = |
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
|
493 |
error ("Duplicate declaration of class(es): " ^ commas_quote cs); |
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
|
494 |
|
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
|
495 |
fun err_cyclic_classes css = |
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
|
496 |
error (cat_lines (map (fn cs => |
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 |
"Cycle in class relation: " ^ space_implode " < " (map quote cs)) css)); |
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
|
498 |
|
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
|
499 |
fun add_class (c, cs) tsig = tsig |> change_tsig (fn (classes, default, types, arities) => |
2964 | 500 |
let |
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
|
501 |
val cs' = map (cert_class tsig) cs |
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
|
502 |
handle TYPE (msg, _, _) => error msg; |
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
|
503 |
val classes' = classes |> Graph.new_node (c, stamp ()) |
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
|
504 |
handle Graph.DUP d => err_dup_classes [d]; |
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
|
505 |
val classes'' = classes' |> fold Graph.add_edge_trans_acyclic (map (pair c) cs') |
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
|
506 |
handle Graph.CYCLES css => err_cyclic_classes css; |
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
|
507 |
in (classes'', default, types, arities) end); |
2964 | 508 |
|
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
|
509 |
in |
0 | 510 |
|
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
|
511 |
val add_classes = fold add_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
|
512 |
|
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
|
513 |
fun add_classrel ps tsig = tsig |> change_tsig (fn (classes, default, types, arities) => |
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
|
514 |
let |
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 |
val ps' = map (pairself (cert_class tsig)) ps |
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
|
516 |
handle TYPE (msg, _, _) => error msg; |
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
|
517 |
val classes' = classes |> fold Graph.add_edge_trans_acyclic ps' |
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
|
518 |
handle Graph.CYCLES css => err_cyclic_classes css; |
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 |
val default' = default |> Sorts.norm_sort 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
|
520 |
val arities' = arities |> rebuild_arities 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
|
521 |
in (classes', default', types, arities') end); |
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
|
522 |
|
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
|
523 |
fun merge_classes CC = Graph.merge_trans_acyclic (op =) CC |
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
|
524 |
handle Graph.DUPS cs => err_dup_classes cs |
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
|
525 |
| Graph.CYCLES css => err_cyclic_classes css; |
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
|
526 |
|
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
|
527 |
end; |
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
|
528 |
|
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
|
529 |
|
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 |
(* 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
|
531 |
|
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 |
fun set_defsort S tsig = tsig |> change_tsig (fn (classes, _, types, arities) => |
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
|
533 |
(classes, cert_sort tsig S handle TYPE (msg, _, _) => error msg, types, arities)); |
0 | 534 |
|
535 |
||
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
|
536 |
(* 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
|
537 |
|
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
|
538 |
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
|
539 |
|
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
|
540 |
fun err_neg_args c = |
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
|
541 |
error ("Negative number of arguments in type constructor declaration: " ^ quote c); |
949
83c588d6fee9
Changed treatment of during type inference internally generated type
nipkow
parents:
621
diff
changeset
|
542 |
|
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
|
543 |
fun err_in_decls c decl 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;
wenzelm
parents:
13666
diff
changeset
|
544 |
let |
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
|
545 |
val s = str_of_decl 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;
wenzelm
parents:
13666
diff
changeset
|
546 |
val s' = str_of_decl 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;
wenzelm
parents:
13666
diff
changeset
|
547 |
in |
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
|
548 |
if s = s' then error ("Duplicate declaration of " ^ s ^ ": " ^ quote c) |
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
|
549 |
else error ("Conflicting declarations of " ^ s ^ " with " ^ s' ^ ": " ^ quote c) |
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
|
550 |
end; |
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
|
551 |
|
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
|
552 |
fun new_decl (c, decl) 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
|
553 |
(case Symtab.lookup (types, c) of |
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
|
554 |
Some (decl', _) => err_in_decls c decl 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;
wenzelm
parents:
13666
diff
changeset
|
555 |
| None => Symtab.update ((c, (decl, stamp ())), 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
|
556 |
|
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
|
557 |
fun the_decl types c = fst (the (Symtab.lookup (types, c))); |
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
|
558 |
|
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
|
559 |
fun change_types f = change_tsig (fn (classes, default, types, arities) => |
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
|
560 |
(classes, default, f types, arities)); |
2964 | 561 |
|
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
|
562 |
fun add_abbr (a, vs, rhs) tsig = tsig |> change_types (fn 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
|
563 |
let |
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
|
564 |
fun err msg = |
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
|
565 |
error (msg ^ "\nThe error(s) above occurred in type abbreviation " ^ quote a); |
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
|
566 |
val rhs' = strip_sorts (varifyT (no_tvars (cert_typ_syntax tsig rhs))) |
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
|
567 |
handle TYPE (msg, _, _) => err msg; |
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
|
568 |
in |
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
|
569 |
(case duplicates vs of |
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
|
570 |
[] => [] |
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
|
571 |
| dups => err ("Duplicate variables on lhs: " ^ commas_quote dups)); |
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
|
572 |
(case gen_rems (op =) (map (#1 o #1) (typ_tvars rhs'), vs) of |
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
|
573 |
[] => [] |
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
|
574 |
| extras => err ("Extra variables on rhs: " ^ commas_quote extras)); |
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
|
575 |
types |> new_decl (a, Abbreviation (vs, rhs')) |
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
|
576 |
end); |
0 | 577 |
|
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
|
578 |
in |
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
|
579 |
|
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
|
580 |
fun add_types ps = change_types (fold new_decl (ps |> map (fn (c, n) => |
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
|
581 |
if n < 0 then err_neg_args c else (c, LogicalType n)))); |
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
|
582 |
|
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
|
583 |
val add_abbrs = fold add_abbr; |
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
|
584 |
val add_nonterminals = change_types o fold new_decl o map (rpair 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;
wenzelm
parents:
13666
diff
changeset
|
585 |
|
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
|
586 |
fun merge_types (types1, types2) = |
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
|
587 |
Symtab.merge Library.eq_snd (types1, types2) handle Symtab.DUPS (d :: _) => |
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
|
588 |
err_in_decls d (the_decl types1 d) (the_decl types2 d); |
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
|
589 |
|
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
|
590 |
end; |
0 | 591 |
|
3790 | 592 |
|
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
|
593 |
(* 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
|
594 |
|
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
|
595 |
fun merge_tsigs (tsig1, tsig2) = |
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
|
596 |
let |
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 |
val (TSig {classes = classes1, default = default1, types = types1, arities = arities1, |
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 |
log_types = _, witness = _}) = tsig1; |
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 |
val (TSig {classes = classes2, default = default2, types = types2, arities = arities2, |
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 |
log_types = _, witness = _}) = tsig2; |
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
|
601 |
|
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
|
602 |
val classes' = merge_classes (classes1, classes2); |
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
|
603 |
val default' = Sorts.inter_sort classes' (default1, default2); |
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
|
604 |
val types' = merge_types (types1, types2); |
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
|
605 |
val arities' = merge_arities classes' (arities1, arities2); |
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
|
606 |
in build_tsig (classes', default', types', arities') end; |
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
|
607 |
|
0 | 608 |
end; |