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651 | ------------------------------------------------------------------------------
-- --
-- GNAT RUN-TIME COMPONENTS --
-- --
-- A D A . S T R I N G S . M A P S --
-- --
-- S p e c --
-- --
-- Copyright (C) 1992-2023, Free Software Foundation, Inc. --
-- --
-- This specification is derived from the Ada Reference Manual for use with --
-- GNAT. The copyright notice above, and the license provisions that follow --
-- apply solely to the contents of the part following the private keyword. --
-- --
-- GNAT is free software; you can redistribute it and/or modify it under --
-- terms of the GNU General Public License as published by the Free Soft- --
-- ware Foundation; either version 3, or (at your option) any later ver- --
-- sion. GNAT is distributed in the hope that it will be useful, but WITH- --
-- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY --
-- or FITNESS FOR A PARTICULAR PURPOSE. --
-- --
-- As a special exception under Section 7 of GPL version 3, you are granted --
-- additional permissions described in the GCC Runtime Library Exception, --
-- version 3.1, as published by the Free Software Foundation. --
-- --
-- You should have received a copy of the GNU General Public License and --
-- a copy of the GCC Runtime Library Exception along with this program; --
-- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see --
-- <http://www.gnu.org/licenses/>. --
-- --
-- GNAT was originally developed by the GNAT team at New York University. --
-- Extensive contributions were provided by Ada Core Technologies Inc. --
-- --
------------------------------------------------------------------------------
-- The package Strings.Maps defines the types, operations, and other entities
-- needed for character sets and character-to-character mappings.
-- Preconditions in this unit are meant for analysis only, not for run-time
-- checking, so that the expected exceptions are raised. This is enforced by
-- setting the corresponding assertion policy to Ignore. Postconditions and
-- ghost code should not be executed at runtime as well, in order not to slow
-- down the execution of these functions.
pragma Assertion_Policy (Pre => Ignore,
Post => Ignore,
Ghost => Ignore);
with Ada.Characters.Latin_1;
package Ada.Strings.Maps
with SPARK_Mode
is
pragma Pure;
-- In accordance with Ada 2005 AI-362
pragma Annotate (GNATprove, Always_Return, Maps);
--------------------------------
-- Character Set Declarations --
--------------------------------
type Character_Set is private;
pragma Preelaborable_Initialization (Character_Set);
-- An object of type Character_Set represents a set of characters.
Null_Set : constant Character_Set;
-- Null_Set represents the set containing no characters.
---------------------------
-- Constructors for Sets --
---------------------------
type Character_Range is record
Low : Character;
High : Character;
end record;
-- An object Obj of type Character_Range represents the set of characters
-- in the range Obj.Low .. Obj.High.
type Character_Ranges is array (Positive range <>) of Character_Range;
-- An object Obj of type Character_Ranges represents the union of the sets
-- corresponding to Obj(I) for I in Obj'Range.
function To_Set (Ranges : Character_Ranges) return Character_Set with
Post =>
(if Ranges'Length = 0 then To_Set'Result = Null_Set)
and then
(for all Char in Character =>
(if Is_In (Char, To_Set'Result)
then (for some Span of Ranges => Char in Span.Low .. Span.High)))
and then
(for all Span of Ranges =>
(for all Char in Span.Low .. Span.High =>
Is_In (Char, To_Set'Result)));
-- If Ranges'Length=0 then Null_Set is returned; otherwise, the returned
-- value represents the set corresponding to Ranges.
function To_Set (Span : Character_Range) return Character_Set with
Post =>
(if Span.High < Span.Low then To_Set'Result = Null_Set)
and then
(for all Char in Character =>
(if Is_In (Char, To_Set'Result) then Char in Span.Low .. Span.High))
and then
(for all Char in Span.Low .. Span.High => Is_In (Char, To_Set'Result));
-- The returned value represents the set containing each character in Span.
function To_Ranges (Set : Character_Set) return Character_Ranges with
Post =>
(if Set = Null_Set then To_Ranges'Result'Length = 0)
and then
(for all Char in Character =>
(if Is_In (Char, Set)
then
(for some Span of To_Ranges'Result =>
Char in Span.Low .. Span.High)))
and then
(for all Span of To_Ranges'Result =>
(for all Char in Span.Low .. Span.High => Is_In (Char, Set)));
-- If Set = Null_Set, then an empty Character_Ranges array is returned;
-- otherwise, the shortest array of contiguous ranges of Character values
-- in Set, in increasing order of Low, is returned.
--
-- The postcondition above does not express that the result is the shortest
-- array and that it is sorted.
----------------------------------
-- Operations on Character Sets --
----------------------------------
function "=" (Left, Right : Character_Set) return Boolean with
Post =>
"="'Result
=
(for all Char in Character =>
(Is_In (Char, Left) = Is_In (Char, Right)));
-- The function "=" returns True if Left and Right represent identical
-- sets, and False otherwise.
-- Each of the logical operators "not", "and", "or", and "xor" returns a
-- Character_Set value that represents the set obtained by applying the
-- corresponding operation to the set(s) represented by the parameter(s)
-- of the operator.
function "not" (Right : Character_Set) return Character_Set with
Post =>
(for all Char in Character =>
(Is_In (Char, "not"'Result)
=
not Is_In (Char, Right)));
function "and" (Left, Right : Character_Set) return Character_Set with
Post =>
(for all Char in Character =>
(Is_In (Char, "and"'Result)
=
(Is_In (Char, Left) and Is_In (Char, Right))));
function "or" (Left, Right : Character_Set) return Character_Set with
Post =>
(for all Char in Character =>
(Is_In (Char, "or"'Result)
=
(Is_In (Char, Left) or Is_In (Char, Right))));
function "xor" (Left, Right : Character_Set) return Character_Set with
Post =>
(for all Char in Character =>
(Is_In (Char, "xor"'Result)
=
(Is_In (Char, Left) xor Is_In (Char, Right))));
function "-" (Left, Right : Character_Set) return Character_Set with
Post =>
(for all Char in Character =>
(Is_In (Char, "-"'Result)
=
(Is_In (Char, Left) and not Is_In (Char, Right))));
-- "-"(Left, Right) is equivalent to "and"(Left, "not"(Right)).
function Is_In
(Element : Character;
Set : Character_Set) return Boolean;
-- Is_In returns True if Element is in Set, and False otherwise.
function Is_Subset
(Elements : Character_Set;
Set : Character_Set) return Boolean
with
Post =>
Is_Subset'Result
=
(for all Char in Character =>
(if Is_In (Char, Elements) then Is_In (Char, Set)));
-- Is_Subset returns True if Elements is a subset of Set, and False
-- otherwise.
function "<="
(Left : Character_Set;
Right : Character_Set) return Boolean
renames Is_Subset;
subtype Character_Sequence is String;
-- The Character_Sequence subtype is used to portray a set of character
-- values and also to identify the domain and range of a character mapping.
function SPARK_Proof_Sorted_Character_Sequence
(Seq : Character_Sequence) return Boolean
is
(for all J in Seq'Range =>
(if J /= Seq'Last then Seq (J) < Seq (J + 1)))
with
Ghost;
-- Check whether the Character_Sequence is sorted in stricly increasing
-- order, as expected from the result of To_Sequence and To_Domain.
-- Sequence portrays the set of character values that it explicitly
-- contains (ignoring duplicates). Singleton portrays the set comprising a
-- single Character. Each of the To_Set functions returns a Character_Set
-- value that represents the set portrayed by Sequence or Singleton.
function To_Set (Sequence : Character_Sequence) return Character_Set with
Post =>
(if Sequence'Length = 0 then To_Set'Result = Null_Set)
and then
(for all Char in Character =>
(if Is_In (Char, To_Set'Result)
then (for some X of Sequence => Char = X)))
and then
(for all Char of Sequence => Is_In (Char, To_Set'Result));
function To_Set (Singleton : Character) return Character_Set with
Post =>
Is_In (Singleton, To_Set'Result)
and then
(for all Char in Character =>
(if Char /= Singleton
then not Is_In (Char, To_Set'Result)));
function To_Sequence (Set : Character_Set) return Character_Sequence with
Post =>
(if Set = Null_Set then To_Sequence'Result'Length = 0)
and then
(for all Char in Character =>
(if Is_In (Char, Set)
then (for some X of To_Sequence'Result => Char = X)))
and then
(for all Char of To_Sequence'Result => Is_In (Char, Set))
and then
SPARK_Proof_Sorted_Character_Sequence (To_Sequence'Result);
-- The function To_Sequence returns a Character_Sequence value containing
-- each of the characters in the set represented by Set, in ascending order
-- with no duplicates.
------------------------------------
-- Character Mapping Declarations --
------------------------------------
type Character_Mapping is private;
pragma Preelaborable_Initialization (Character_Mapping);
-- An object of type Character_Mapping represents a Character-to-Character
-- mapping.
type SPARK_Proof_Character_Mapping_Model is
array (Character) of Character
with Ghost;
-- Publicly visible model of a Character_Mapping
function SPARK_Proof_Model
(Map : Character_Mapping)
return SPARK_Proof_Character_Mapping_Model
with Ghost;
-- Creation of a publicly visible model of a Character_Mapping
function Value
(Map : Character_Mapping;
Element : Character) return Character
with
Post => Value'Result = SPARK_Proof_Model (Map) (Element);
-- The function Value returns the Character value to which Element maps
-- with respect to the mapping represented by Map.
-- A character C matches a pattern character P with respect to a given
-- Character_Mapping value Map if Value(Map, C) = P. A string S matches
-- a pattern string P with respect to a given Character_Mapping if
-- their lengths are the same and if each character in S matches its
-- corresponding character in the pattern string P.
-- String handling subprograms that deal with character mappings have
-- parameters whose type is Character_Mapping.
Identity : constant Character_Mapping;
-- Identity maps each Character to itself.
----------------------------
-- Operations on Mappings --
----------------------------
function To_Mapping
(From, To : Character_Sequence) return Character_Mapping
with
Pre =>
From'Length = To'Length
and then
(for all J in From'Range =>
(for all K in From'Range =>
(if J /= K then From (J) /= From (K)))),
Post =>
(if From = To then To_Mapping'Result = Identity)
and then
(for all Char in Character =>
((for all J in From'Range =>
(if From (J) = Char
then Value (To_Mapping'Result, Char)
= To (J - From'First + To'First)))
and then
(if (for all X of From => Char /= X)
then Value (To_Mapping'Result, Char) = Char)));
-- To_Mapping produces a Character_Mapping such that each element of From
-- maps to the corresponding element of To, and each other character maps
-- to itself. If From'Length /= To'Length, or if some character is repeated
-- in From, then Translation_Error is propagated.
function To_Domain
(Map : Character_Mapping) return Character_Sequence with
Post =>
(if Map = Identity then To_Domain'Result'Length = 0)
and then
To_Domain'Result'First = 1
and then
SPARK_Proof_Sorted_Character_Sequence (To_Domain'Result)
and then
(for all Char in Character =>
(if (for all X of To_Domain'Result => X /= Char)
then Value (Map, Char) = Char))
and then
(for all Char of To_Domain'Result => Value (Map, Char) /= Char);
-- To_Domain returns the shortest Character_Sequence value D such that each
-- character not in D maps to itself, and such that the characters in D are
-- in ascending order. The lower bound of D is 1.
function To_Range
(Map : Character_Mapping) return Character_Sequence with
Post =>
To_Range'Result'First = 1
and then
To_Range'Result'Length = To_Domain (Map)'Length
and then
(for all J in To_Range'Result'Range =>
To_Range'Result (J) = Value (Map, To_Domain (Map) (J)));
-- To_Range returns the Character_Sequence value R, such that if D =
-- To_Domain(Map), then R has the same bounds as D, and D(I) maps to
-- R(I) for each I in D'Range.
--
-- A direct encoding of the Ada RM would be the postcondition
-- To_Range'Result'Last = To_Domain (Map)'Last
-- which is not provable unless the postcondition of To_Domain is also
-- strengthened to state the value of the high bound for an empty result.
type Character_Mapping_Function is
access function (From : Character) return Character;
-- An object F of type Character_Mapping_Function maps a Character value C
-- to the Character value F.all(C), which is said to match C with respect
-- to mapping function F.
private
pragma Inline (Is_In);
pragma Inline (Value);
type Character_Set_Internal is array (Character) of Boolean;
pragma Pack (Character_Set_Internal);
type Character_Set is new Character_Set_Internal;
-- Note: the reason for this level of derivation is to make sure
-- that the predefined logical operations on this type remain
-- accessible. The operations on Character_Set are overridden by
-- the defined operations in the spec, but the operations defined
-- on Character_Set_Internal remain visible.
Null_Set : constant Character_Set := [others => False];
type Character_Mapping is array (Character) of Character;
function SPARK_Proof_Model
(Map : Character_Mapping)
return SPARK_Proof_Character_Mapping_Model
is
(SPARK_Proof_Character_Mapping_Model (Map));
package L renames Ada.Characters.Latin_1;
Identity : constant Character_Mapping :=
(L.NUL & -- NUL 0
L.SOH & -- SOH 1
L.STX & -- STX 2
L.ETX & -- ETX 3
L.EOT & -- EOT 4
L.ENQ & -- ENQ 5
L.ACK & -- ACK 6
L.BEL & -- BEL 7
L.BS & -- BS 8
L.HT & -- HT 9
L.LF & -- LF 10
L.VT & -- VT 11
L.FF & -- FF 12
L.CR & -- CR 13
L.SO & -- SO 14
L.SI & -- SI 15
L.DLE & -- DLE 16
L.DC1 & -- DC1 17
L.DC2 & -- DC2 18
L.DC3 & -- DC3 19
L.DC4 & -- DC4 20
L.NAK & -- NAK 21
L.SYN & -- SYN 22
L.ETB & -- ETB 23
L.CAN & -- CAN 24
L.EM & -- EM 25
L.SUB & -- SUB 26
L.ESC & -- ESC 27
L.FS & -- FS 28
L.GS & -- GS 29
L.RS & -- RS 30
L.US & -- US 31
L.Space & -- ' ' 32
L.Exclamation & -- '!' 33
L.Quotation & -- '"' 34
L.Number_Sign & -- '#' 35
L.Dollar_Sign & -- '$' 36
L.Percent_Sign & -- '%' 37
L.Ampersand & -- '&' 38
L.Apostrophe & -- ''' 39
L.Left_Parenthesis & -- '(' 40
L.Right_Parenthesis & -- ')' 41
L.Asterisk & -- '*' 42
L.Plus_Sign & -- '+' 43
L.Comma & -- ',' 44
L.Hyphen & -- '-' 45
L.Full_Stop & -- '.' 46
L.Solidus & -- '/' 47
'0' & -- '0' 48
'1' & -- '1' 49
'2' & -- '2' 50
'3' & -- '3' 51
'4' & -- '4' 52
'5' & -- '5' 53
'6' & -- '6' 54
'7' & -- '7' 55
'8' & -- '8' 56
'9' & -- '9' 57
L.Colon & -- ':' 58
L.Semicolon & -- ';' 59
L.Less_Than_Sign & -- '<' 60
L.Equals_Sign & -- '=' 61
L.Greater_Than_Sign & -- '>' 62
L.Question & -- '?' 63
L.Commercial_At & -- '@' 64
'A' & -- 'A' 65
'B' & -- 'B' 66
'C' & -- 'C' 67
'D' & -- 'D' 68
'E' & -- 'E' 69
'F' & -- 'F' 70
'G' & -- 'G' 71
'H' & -- 'H' 72
'I' & -- 'I' 73
'J' & -- 'J' 74
'K' & -- 'K' 75
'L' & -- 'L' 76
'M' & -- 'M' 77
'N' & -- 'N' 78
'O' & -- 'O' 79
'P' & -- 'P' 80
'Q' & -- 'Q' 81
'R' & -- 'R' 82
'S' & -- 'S' 83
'T' & -- 'T' 84
'U' & -- 'U' 85
'V' & -- 'V' 86
'W' & -- 'W' 87
'X' & -- 'X' 88
'Y' & -- 'Y' 89
'Z' & -- 'Z' 90
L.Left_Square_Bracket & -- '[' 91
L.Reverse_Solidus & -- '\' 92
L.Right_Square_Bracket & -- ']' 93
L.Circumflex & -- '^' 94
L.Low_Line & -- '_' 95
L.Grave & -- '`' 96
L.LC_A & -- 'a' 97
L.LC_B & -- 'b' 98
L.LC_C & -- 'c' 99
L.LC_D & -- 'd' 100
L.LC_E & -- 'e' 101
L.LC_F & -- 'f' 102
L.LC_G & -- 'g' 103
L.LC_H & -- 'h' 104
L.LC_I & -- 'i' 105
L.LC_J & -- 'j' 106
L.LC_K & -- 'k' 107
L.LC_L & -- 'l' 108
L.LC_M & -- 'm' 109
L.LC_N & -- 'n' 110
L.LC_O & -- 'o' 111
L.LC_P & -- 'p' 112
L.LC_Q & -- 'q' 113
L.LC_R & -- 'r' 114
L.LC_S & -- 's' 115
L.LC_T & -- 't' 116
L.LC_U & -- 'u' 117
L.LC_V & -- 'v' 118
L.LC_W & -- 'w' 119
L.LC_X & -- 'x' 120
L.LC_Y & -- 'y' 121
L.LC_Z & -- 'z' 122
L.Left_Curly_Bracket & -- '{' 123
L.Vertical_Line & -- '|' 124
L.Right_Curly_Bracket & -- '}' 125
L.Tilde & -- '~' 126
L.DEL & -- DEL 127
L.Reserved_128 & -- Reserved_128 128
L.Reserved_129 & -- Reserved_129 129
L.BPH & -- BPH 130
L.NBH & -- NBH 131
L.Reserved_132 & -- Reserved_132 132
L.NEL & -- NEL 133
L.SSA & -- SSA 134
L.ESA & -- ESA 135
L.HTS & -- HTS 136
L.HTJ & -- HTJ 137
L.VTS & -- VTS 138
L.PLD & -- PLD 139
L.PLU & -- PLU 140
L.RI & -- RI 141
L.SS2 & -- SS2 142
L.SS3 & -- SS3 143
L.DCS & -- DCS 144
L.PU1 & -- PU1 145
L.PU2 & -- PU2 146
L.STS & -- STS 147
L.CCH & -- CCH 148
L.MW & -- MW 149
L.SPA & -- SPA 150
L.EPA & -- EPA 151
L.SOS & -- SOS 152
L.Reserved_153 & -- Reserved_153 153
L.SCI & -- SCI 154
L.CSI & -- CSI 155
L.ST & -- ST 156
L.OSC & -- OSC 157
L.PM & -- PM 158
L.APC & -- APC 159
L.No_Break_Space & -- No_Break_Space 160
L.Inverted_Exclamation & -- Inverted_Exclamation 161
L.Cent_Sign & -- Cent_Sign 162
L.Pound_Sign & -- Pound_Sign 163
L.Currency_Sign & -- Currency_Sign 164
L.Yen_Sign & -- Yen_Sign 165
L.Broken_Bar & -- Broken_Bar 166
L.Section_Sign & -- Section_Sign 167
L.Diaeresis & -- Diaeresis 168
L.Copyright_Sign & -- Copyright_Sign 169
L.Feminine_Ordinal_Indicator & -- Feminine_Ordinal_Indicator 170
L.Left_Angle_Quotation & -- Left_Angle_Quotation 171
L.Not_Sign & -- Not_Sign 172
L.Soft_Hyphen & -- Soft_Hyphen 173
L.Registered_Trade_Mark_Sign & -- Registered_Trade_Mark_Sign 174
L.Macron & -- Macron 175
L.Degree_Sign & -- Degree_Sign 176
L.Plus_Minus_Sign & -- Plus_Minus_Sign 177
L.Superscript_Two & -- Superscript_Two 178
L.Superscript_Three & -- Superscript_Three 179
L.Acute & -- Acute 180
L.Micro_Sign & -- Micro_Sign 181
L.Pilcrow_Sign & -- Pilcrow_Sign 182
L.Middle_Dot & -- Middle_Dot 183
L.Cedilla & -- Cedilla 184
L.Superscript_One & -- Superscript_One 185
L.Masculine_Ordinal_Indicator & -- Masculine_Ordinal_Indicator 186
L.Right_Angle_Quotation & -- Right_Angle_Quotation 187
L.Fraction_One_Quarter & -- Fraction_One_Quarter 188
L.Fraction_One_Half & -- Fraction_One_Half 189
L.Fraction_Three_Quarters & -- Fraction_Three_Quarters 190
L.Inverted_Question & -- Inverted_Question 191
L.UC_A_Grave & -- UC_A_Grave 192
L.UC_A_Acute & -- UC_A_Acute 193
L.UC_A_Circumflex & -- UC_A_Circumflex 194
L.UC_A_Tilde & -- UC_A_Tilde 195
L.UC_A_Diaeresis & -- UC_A_Diaeresis 196
L.UC_A_Ring & -- UC_A_Ring 197
L.UC_AE_Diphthong & -- UC_AE_Diphthong 198
L.UC_C_Cedilla & -- UC_C_Cedilla 199
L.UC_E_Grave & -- UC_E_Grave 200
L.UC_E_Acute & -- UC_E_Acute 201
L.UC_E_Circumflex & -- UC_E_Circumflex 202
L.UC_E_Diaeresis & -- UC_E_Diaeresis 203
L.UC_I_Grave & -- UC_I_Grave 204
L.UC_I_Acute & -- UC_I_Acute 205
L.UC_I_Circumflex & -- UC_I_Circumflex 206
L.UC_I_Diaeresis & -- UC_I_Diaeresis 207
L.UC_Icelandic_Eth & -- UC_Icelandic_Eth 208
L.UC_N_Tilde & -- UC_N_Tilde 209
L.UC_O_Grave & -- UC_O_Grave 210
L.UC_O_Acute & -- UC_O_Acute 211
L.UC_O_Circumflex & -- UC_O_Circumflex 212
L.UC_O_Tilde & -- UC_O_Tilde 213
L.UC_O_Diaeresis & -- UC_O_Diaeresis 214
L.Multiplication_Sign & -- Multiplication_Sign 215
L.UC_O_Oblique_Stroke & -- UC_O_Oblique_Stroke 216
L.UC_U_Grave & -- UC_U_Grave 217
L.UC_U_Acute & -- UC_U_Acute 218
L.UC_U_Circumflex & -- UC_U_Circumflex 219
L.UC_U_Diaeresis & -- UC_U_Diaeresis 220
L.UC_Y_Acute & -- UC_Y_Acute 221
L.UC_Icelandic_Thorn & -- UC_Icelandic_Thorn 222
L.LC_German_Sharp_S & -- LC_German_Sharp_S 223
L.LC_A_Grave & -- LC_A_Grave 224
L.LC_A_Acute & -- LC_A_Acute 225
L.LC_A_Circumflex & -- LC_A_Circumflex 226
L.LC_A_Tilde & -- LC_A_Tilde 227
L.LC_A_Diaeresis & -- LC_A_Diaeresis 228
L.LC_A_Ring & -- LC_A_Ring 229
L.LC_AE_Diphthong & -- LC_AE_Diphthong 230
L.LC_C_Cedilla & -- LC_C_Cedilla 231
L.LC_E_Grave & -- LC_E_Grave 232
L.LC_E_Acute & -- LC_E_Acute 233
L.LC_E_Circumflex & -- LC_E_Circumflex 234
L.LC_E_Diaeresis & -- LC_E_Diaeresis 235
L.LC_I_Grave & -- LC_I_Grave 236
L.LC_I_Acute & -- LC_I_Acute 237
L.LC_I_Circumflex & -- LC_I_Circumflex 238
L.LC_I_Diaeresis & -- LC_I_Diaeresis 239
L.LC_Icelandic_Eth & -- LC_Icelandic_Eth 240
L.LC_N_Tilde & -- LC_N_Tilde 241
L.LC_O_Grave & -- LC_O_Grave 242
L.LC_O_Acute & -- LC_O_Acute 243
L.LC_O_Circumflex & -- LC_O_Circumflex 244
L.LC_O_Tilde & -- LC_O_Tilde 245
L.LC_O_Diaeresis & -- LC_O_Diaeresis 246
L.Division_Sign & -- Division_Sign 247
L.LC_O_Oblique_Stroke & -- LC_O_Oblique_Stroke 248
L.LC_U_Grave & -- LC_U_Grave 249
L.LC_U_Acute & -- LC_U_Acute 250
L.LC_U_Circumflex & -- LC_U_Circumflex 251
L.LC_U_Diaeresis & -- LC_U_Diaeresis 252
L.LC_Y_Acute & -- LC_Y_Acute 253
L.LC_Icelandic_Thorn & -- LC_Icelandic_Thorn 254
L.LC_Y_Diaeresis); -- LC_Y_Diaeresis 255
end Ada.Strings.Maps;
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