A.4.6 String-Handling Sets and Mappings
The language-defined package Strings.Maps.Constants
declares Character_Set and Character_Mapping constants corresponding
to classification and conversion functions in package Characters.Handling.
Static Semantics
The library package
Strings.Maps.Constants has the following declaration:
package Ada.Strings.Maps.Constants
is
pragma Pure(Constants);
Control_Set :
constant Character_Set;
Graphic_Set :
constant Character_Set;
Letter_Set :
constant Character_Set;
Lower_Set :
constant Character_Set;
Upper_Set :
constant Character_Set;
Basic_Set :
constant Character_Set;
Decimal_Digit_Set :
constant Character_Set;
Hexadecimal_Digit_Set :
constant Character_Set;
Alphanumeric_Set :
constant Character_Set;
Special_Set :
constant Character_Set;
ISO_646_Set :
constant Character_Set;
Lower_Case_Map :
constant Character_Mapping;
--
Maps to lower case for letters, else identity
Upper_Case_Map :
constant Character_Mapping;
--
Maps to upper case for letters, else identity
Basic_Map :
constant Character_Mapping;
--
Maps to basic letter for letters, else identity
private
... -- not specified by the language
end Ada.Strings.Maps.Constants;
Each of these constants represents a correspondingly
named set of characters or character mapping in Characters.Handling (see
A.3.2).
15 There are certain characters which are
defined to be lower case letters by ISO 10646 and are therefore allowed
in identifiers, but are not considered lower case letters by Ada.Strings.Maps.Constants.
Ada 2005 and 2012 Editions sponsored in part by Ada-Europe
