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A.3.4 The Package Characters.Conversions

Static Semantics

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{AI95-00395-01} The library package Characters.Conversions has the following declaration:
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package Ada.Characters.Conversions is
   pragma Pure(Conversions);
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   function Is_Character (Item : in Wide_Character)      return Boolean;
   function Is_String    (Item : in Wide_String)         return Boolean;
   function Is_Character (Item : in Wide_Wide_Character) return Boolean;
   function Is_String    (Item : in Wide_Wide_String)    return Boolean;
   function Is_Wide_Character (Item : in Wide_Wide_Character)
      return Boolean;
   function Is_Wide_String    (Item : in Wide_Wide_String)
      return Boolean;
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   function To_Wide_Character (Item : in Character) return Wide_Character;
   function To_Wide_String    (Item : in String)    return Wide_String;
   function To_Wide_Wide_Character (Item : in Character)
      return Wide_Wide_Character;
   function To_Wide_Wide_String    (Item : in String)
      return Wide_Wide_String;
   function To_Wide_Wide_Character (Item : in Wide_Character)
      return Wide_Wide_Character;
   function To_Wide_Wide_String    (Item : in Wide_String)
      return Wide_Wide_String;
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   function To_Character (Item       : in Wide_Character;
                         Substitute : in Character := ' ')
      return Character;
   function To_String    (Item       : in Wide_String;
                          Substitute : in Character := ' ')
      return String;
   function To_Character (Item :       in Wide_Wide_Character;
                          Substitute : in Character := ' ')
      return Character;
   function To_String    (Item :       in Wide_Wide_String;
                          Substitute : in Character := ' ')
      return String;
   function To_Wide_Character (Item :       in Wide_Wide_Character;
                               Substitute : in Wide_Character := ' ')
      return Wide_Character;
   function To_Wide_String    (Item :       in Wide_Wide_String;
                               Substitute : in Wide_Character := ' ')
      return Wide_String;
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end Ada.Characters.Conversions;
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{AI95-00395-01} The functions in package Characters.Conversions test Wide_Wide_Character or Wide_Character values for membership in Wide_Character or Character, or convert between corresponding characters of Wide_Wide_Character, Wide_Character, and Character.
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function Is_Character (Item : in Wide_Character) return Boolean;
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{AI95-00395-01} Returns True if Wide_Character'Pos(Item) <= Character'Pos(Character'Last).
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function Is_Character (Item : in Wide_Wide_Character) return Boolean;
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{AI95-00395-01} Returns True if Wide_Wide_Character'Pos(Item) <= Character'Pos(Character'Last).
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function Is_Wide_Character (Item : in Wide_Wide_Character) return Boolean;
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{AI95-00395-01} Returns True if Wide_Wide_Character'Pos(Item) <= Wide_Character'Pos(Wide_Character'Last).
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function Is_String (Item : in Wide_String)      return Boolean;
function Is_String (Item : in Wide_Wide_String) return Boolean;
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{AI95-00395-01} Returns True if Is_Character(Item(I)) is True for each I in Item'Range.
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function Is_Wide_String (Item : in Wide_Wide_String) return Boolean;
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{AI95-00395-01} Returns True if Is_Wide_Character(Item(I)) is True for each I in Item'Range.
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function To_Character (Item :       in Wide_Character;
                       Substitute : in Character := ' ') return Character;
function To_Character (Item :       in Wide_Wide_Character;
                       Substitute : in Character := ' ') return Character;
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{AI95-00395-01} Returns the Character corresponding to Item if Is_Character(Item), and returns the Substitute Character otherwise.
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function To_Wide_Character (Item : in Character) return Wide_Character;
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{AI95-00395-01} Returns the Wide_Character X such that Character'Pos(Item) = Wide_Character'Pos (X).
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function To_Wide_Character (Item :       in Wide_Wide_Character;
                            Substitute : in Wide_Character := ' ')
   return Wide_Character;
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{AI95-00395-01} Returns the Wide_Character corresponding to Item if Is_Wide_Character(Item), and returns the Substitute Wide_Character otherwise.
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function To_Wide_Wide_Character (Item : in Character)
   return Wide_Wide_Character;
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{AI95-00395-01} Returns the Wide_Wide_Character X such that Character'Pos(Item) = Wide_Wide_Character'Pos (X).
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function To_Wide_Wide_Character (Item : in Wide_Character)
   return Wide_Wide_Character;
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{AI95-00395-01} Returns the Wide_Wide_Character X such that Wide_Character'Pos(Item) = Wide_Wide_Character'Pos (X).
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function To_String (Item :       in Wide_String;
                    Substitute : in Character := ' ') return String;
function To_String (Item :       in Wide_Wide_String;
                    Substitute : in Character := ' ') return String;
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{AI95-00395-01} Returns the String whose range is 1..Item'Length and each of whose elements is given by To_Character of the corresponding element in Item.
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function To_Wide_String (Item : in String) return Wide_String;
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{AI95-00395-01} Returns the Wide_String whose range is 1..Item'Length and each of whose elements is given by To_Wide_Character of the corresponding element in Item.
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function To_Wide_String (Item :       in Wide_Wide_String;
                         Substitute : in Wide_Character := ' ')
   return Wide_String;
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{AI95-00395-01} Returns the Wide_String whose range is 1..Item'Length and each of whose elements is given by To_Wide_Character of the corresponding element in Item with the given Substitute Wide_Character.
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function To_Wide_Wide_String (Item : in String) return Wide_Wide_String;
function To_Wide_Wide_String (Item : in Wide_String)
   return Wide_Wide_String;
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{AI95-00395-01} Returns the Wide_Wide_String whose range is 1..Item'Length and each of whose elements is given by To_Wide_Wide_Character of the corresponding element in Item.

Extensions to Ada 95

35.a/2
{AI95-00395-01} {extensions to Ada 95} The package Characters.Conversions is new, replacing functions previously found in Characters.Handling.

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