-- --
-- S p e c --
-- --
--- Copyright (C) 2005 Free Software Foundation, Inc. --
+-- Copyright (C) 2005-2009, Free Software Foundation, Inc. --
-- --
-- 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 2, or (at your option) any later ver- --
+-- 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. See the GNU General Public License --
--- for more details. You should have received a copy of the GNU General --
--- Public License distributed with GNAT; see file COPYING. If not, write --
--- to the Free Software Foundation, 51 Franklin Street, Fifth Floor, --
--- Boston, MA 02110-1301, USA. --
+-- or FITNESS FOR A PARTICULAR PURPOSE. --
-- --
--- As a special exception, if other files instantiate generics from this --
--- unit, or you link this unit with other files to produce an executable, --
--- this unit does not by itself cause the resulting executable to be --
--- covered by the GNU General Public License. This exception does not --
--- however invalidate any other reasons why the executable file might be --
--- covered by the GNU Public License. --
+-- 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. --
-- and also serves as the basis for Ada.Wide_Wide_Characters.Unicode and
-- Ada.Wide_Characters.Unicode, which can also be used directly.
-package GNAT.UTF_32 is
-
- type UTF_32 is range 0 .. 16#7FFF_FFFF#;
- -- So far, the only defined character codes are in 0 .. 16#01_FFFF#
-
- -- The following type defines the categories from the unicode definitions.
- -- The one addition we make is Fe, which represents the characters FFFE
- -- and FFFF in any of the planes.
-
- type Category is (
- Cc, -- Other, Control
- Cf, -- Other, Format
- Cn, -- Other, Not Assigned
- Co, -- Other, Private Use
- Cs, -- Other, Surrogate
- Ll, -- Letter, Lowercase
- Lm, -- Letter, Modifier
- Lo, -- Letter, Other
- Lt, -- Letter, Titlecase
- Lu, -- Letter, Uppercase
- Mc, -- Mark, Spacing Combining
- Me, -- Mark, Enclosing
- Mn, -- Mark, Nonspacing
- Nd, -- Number, Decimal Digit
- Nl, -- Number, Letter
- No, -- Number, Other
- Pc, -- Punctuation, Connector
- Pd, -- Punctuation, Dash
- Pe, -- Punctuation, Close
- Pf, -- Punctuation, Final quote
- Pi, -- Punctuation, Initial quote
- Po, -- Punctuation, Other
- Ps, -- Punctuation, Open
- Sc, -- Symbol, Currency
- Sk, -- Symbol, Modifier
- Sm, -- Symbol, Math
- So, -- Symbol, Other
- Zl, -- Separator, Line
- Zp, -- Separator, Paragraph
- Zs, -- Separator, Space
- Fe); -- relative position FFFE/FFFF in any plane
-
- function Get_Category (U : UTF_32) return Category;
- -- Given a UTF32 code, returns corresponding Category, or Cn if
- -- the code does not have an assigned unicode category.
-
- -- The following functions perform category tests corresponding to lexical
- -- classes defined in the Ada standard. There are two interfaces for each
- -- function. The second takes a Category (e.g. returned by Get_Category).
- -- The first takes a UTF_32 code. The form taking the UTF_32 code is
- -- typically more efficient than calling Get_Category, but if several
- -- different tests are to be performed on the same code, it is more
- -- efficient to use Get_Category to get the category, then test the
- -- resulting category.
-
- function Is_UTF_32_Letter (U : UTF_32) return Boolean;
- function Is_UTF_32_Letter (C : Category) return Boolean;
- pragma Inline (Is_UTF_32_Letter);
- -- Returns true iff U is a letter that can be used to start an identifier,
- -- or if C is one of the corresponding categories, which are the following:
- -- Letter, Uppercase (Lu)
- -- Letter, Lowercase (Ll)
- -- Letter, Titlecase (Lt)
- -- Letter, Modifier (Lm)
- -- Letter, Other (Lo)
- -- Number, Letter (Nl)
-
- function Is_UTF_32_Digit (U : UTF_32) return Boolean;
- function Is_UTF_32_Digit (C : Category) return Boolean;
- pragma Inline (Is_UTF_32_Digit);
- -- Returns true iff U is a digit that can be used to extend an identifer,
- -- or if C is one of the corresponding categories, which are the following:
- -- Number, Decimal_Digit (Nd)
-
- function Is_UTF_32_Line_Terminator (U : UTF_32) return Boolean;
- pragma Inline (Is_UTF_32_Line_Terminator);
- -- Returns true iff U is an allowed line terminator for source programs,
- -- if U is in the category Zp (Separator, Paragaph), or Zs (Separator,
- -- Line), or if U is a conventional line terminator (CR, LF, VT, FF).
- -- There is no category version for this function, since the set of
- -- characters does not correspond to a set of Unicode categories.
-
- function Is_UTF_32_Mark (U : UTF_32) return Boolean;
- function Is_UTF_32_Mark (C : Category) return Boolean;
- pragma Inline (Is_UTF_32_Mark);
- -- Returns true iff U is a mark character which can be used to extend an
- -- identifier, or if C is one of the corresponding categories, which are
- -- the following:
- -- Mark, Non-Spacing (Mn)
- -- Mark, Spacing Combining (Mc)
-
- function Is_UTF_32_Other (U : UTF_32) return Boolean;
- function Is_UTF_32_Other (C : Category) return Boolean;
- pragma Inline (Is_UTF_32_Other);
- -- Returns true iff U is an other format character, which means that it
- -- can be used to extend an identifier, but is ignored for the purposes of
- -- matching of identiers, or if C is one of the corresponding categories,
- -- which are the following:
- -- Other, Format (Cf)
-
- function Is_UTF_32_Punctuation (U : UTF_32) return Boolean;
- function Is_UTF_32_Punctuation (C : Category) return Boolean;
- pragma Inline (Is_UTF_32_Punctuation);
- -- Returns true iff U is a punctuation character that can be used to
- -- separate pices of an identifier, or if C is one of the corresponding
- -- categories, which are the following:
- -- Punctuation, Connector (Pc)
-
- function Is_UTF_32_Space (U : UTF_32) return Boolean;
- function Is_UTF_32_Space (C : Category) return Boolean;
- pragma Inline (Is_UTF_32_Space);
- -- Returns true iff U is considered a space to be ignored, or if C is one
- -- of the corresponding categories, which are the following:
- -- Separator, Space (Zs)
-
- function Is_UTF_32_Non_Graphic (U : UTF_32) return Boolean;
- function Is_UTF_32_Non_Graphic (C : Category) return Boolean;
- pragma Inline (Is_UTF_32_Non_Graphic);
- -- Returns true iff U is considered to be a non-graphic character, or if C
- -- is one of the corresponding categories, which are the following:
- -- Other, Control (Cc)
- -- Other, Private Use (Co)
- -- Other, Surrogate (Cs)
- -- Separator, Line (Zl)
- -- Separator, Paragraph (Zp)
- -- FFFE or FFFF positions in any plane (Fe)
- --
- -- Note that the Ada category format effector is subsumed by the above
- -- list of Unicode categories.
- --
- -- Note that Other, Unassiged (Cn) is quite deliberately not included
- -- in the list of categories above. This means that should any of these
- -- code positions be defined in future with graphic characters they will
- -- be allowed without a need to change implementations or the standard.
- --
- -- Note that Other, Format (Cf) is also quite deliberately not included
- -- in the list of categories above. This means that these characters can
- -- be included in character and string literals.
-
- -- The following function is used to fold to upper case, as required by
- -- the Ada 2005 standard rules for identifier case folding. Two
- -- identifiers are equivalent if they are identical after folding all
- -- letters to upper case using this routine.
+-- See file s-utf_32.ads for full documentation of the interface
- function UTF_32_To_Upper_Case (U : UTF_32) return UTF_32;
- pragma Inline (UTF_32_To_Upper_Case);
- -- If U represents a lower case letter, returns the corresponding upper
- -- case letter, otherwise U is returned unchanged. The folding is locale
- -- independent as defined by documents referenced in the note in section
- -- 1 of ISO/IEC 10646:2003
+with System.UTF_32;
-end GNAT.UTF_32;
+package GNAT.UTF_32 renames System.UTF_32;
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