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author | Arnaud Charlet <charlet@adacore.com> | 2005-02-09 11:14:42 +0000 |
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committer | Arnaud Charlet <charlet@gcc.gnu.org> | 2005-02-09 12:14:42 +0100 |
commit | 4c2d6a700cb2b4928228a8ebc425750406f1a42a (patch) | |
tree | fc2c56125c477bf3312555b0de2bc5a1860ba895 /gcc/ada/a-stzsea.adb | |
parent | e99e6d711d080daa5c3d25b2dc184bbbdeaba47f (diff) | |
download | gcc-4c2d6a700cb2b4928228a8ebc425750406f1a42a.tar.gz |
a-rbtgso.adb, [...]: New files.
* a-rbtgso.adb, a-crbtgo.ads, a-crbtgo.adb, a-crbtgk.ads,
a-crbtgk.adb, a-crbltr.ads, a-coprnu.ads, a-coprnu.adb,
a-coorse.ads, a-coorse.adb, a-convec.ads, a-convec.adb,
a-contai.ads, a-coinve.ads, a-coinve.adb, a-cohata.ads,
a-cohama.ads, a-cohama.adb, a-ciorse.ads, a-ciorse.adb,
a-cihama.ads, a-cihama.adb, a-cidlli.ads, a-cidlli.adb,
a-chtgop.ads, a-chtgop.adb, a-cgcaso.ads, a-cgcaso.adb,
a-cgarso.ads, a-cgarso.adb, a-cdlili.ads, a-cdlili.adb,
a-cgaaso.adb, a-coormu.adb, a-ciormu.adb, a-cihase.adb,
a-cihase.ads, a-cohase.adb, a-cohase.ads, a-ciorma.ads,
a-coorma.ads, a-swunha.ads, a-stunha.ads, a-ciormu.ads,
a-coormu.ads, a-rbtgso.ads, a-swunha.adb, a-stunha.adb,
a-cgaaso.ads, a-ciorma.adb, a-coorma.adb, a-secain.adb,
a-secain.ads, a-slcain.ads, a-slcain.adb, a-shcain.ads,
a-shcain.adb, a-chtgke.ads, a-chtgke.adb, a-stwiha.ads,
a-stwiha.adb, a-strhas.ads, a-strhas.adb, a-chzla1.ads,
a-chzla9.ads, a-lfztio.ads, a-liztio.ads, a-llfzti.ads,
a-llizti.ads, a-sfztio.ads, a-siztio.ads, a-ssizti.ads,
a-stzbou.adb, a-stzbou.ads, a-stzfix.adb, a-stzfix.ads,
a-stzhas.adb, a-stzhas.ads, a-stzmap.adb, a-stzmap.ads,
a-stzsea.adb, a-stzsea.ads, a-stzsup.adb, a-stzsup.ads,
a-stzunb.adb, a-stzunb.ads, a-swunau.adb, a-swunau.ads,
a-szmzco.ads, a-szunau.adb, a-szunau.ads, a-szunha.adb,
a-szunha.ads, a-szuzti.adb, a-szuzti.ads, a-tiunio.ads,
a-wwunio.ads, a-ztcoau.adb, a-ztcoau.ads, a-ztcoio.adb,
a-ztcoio.ads, a-ztcstr.adb, a-ztcstr.ads, a-ztdeau.adb,
a-ztdeau.ads, a-ztdeio.adb, a-ztdeio.ads, a-ztedit.adb,
a-ztedit.ads, a-ztenau.adb, a-ztenau.ads, a-ztenio.adb,
a-ztenio.ads, a-ztexio.adb, a-ztexio.ads, a-ztfiio.adb,
a-ztfiio.ads, a-ztflau.adb, a-ztflau.ads, a-ztflio.adb,
a-ztflio.ads, a-ztgeau.adb, a-ztgeau.ads, a-ztinau.adb,
a-ztinau.ads, a-ztinio.adb, a-ztinio.ads, a-ztmoau.adb,
a-ztmoau.ads, a-ztmoio.adb, a-ztmoio.ads, a-zttest.adb,
a-zttest.ads, a-zzunio.ads: New files. Part of new Ada 2005
library.
From-SVN: r94764
Diffstat (limited to 'gcc/ada/a-stzsea.adb')
-rw-r--r-- | gcc/ada/a-stzsea.adb | 420 |
1 files changed, 420 insertions, 0 deletions
diff --git a/gcc/ada/a-stzsea.adb b/gcc/ada/a-stzsea.adb new file mode 100644 index 00000000000..bb65fd97742 --- /dev/null +++ b/gcc/ada/a-stzsea.adb @@ -0,0 +1,420 @@ +------------------------------------------------------------------------------ +-- -- +-- GNAT RUNTIME COMPONENTS -- +-- -- +-- A D A . S T R I N G S . W I D E _ W I D E _ S E A R C H -- +-- -- +-- B o d y -- +-- -- +-- Copyright (C) 1992-2005 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- -- +-- 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, 59 Temple Place - Suite 330, Boston, -- +-- MA 02111-1307, USA. -- +-- -- +-- 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. -- +-- -- +-- GNAT was originally developed by the GNAT team at New York University. -- +-- Extensive contributions were provided by Ada Core Technologies Inc. -- +-- -- +------------------------------------------------------------------------------ + +with Ada.Strings.Wide_Wide_Maps; use Ada.Strings.Wide_Wide_Maps; + +package body Ada.Strings.Wide_Wide_Search is + + ----------------------- + -- Local Subprograms -- + ----------------------- + + function Belongs + (Element : Wide_Wide_Character; + Set : Wide_Wide_Maps.Wide_Wide_Character_Set; + Test : Membership) return Boolean; + pragma Inline (Belongs); + -- Determines if the given element is in (Test = Inside) or not in + -- (Test = Outside) the given character set. + + ------------- + -- Belongs -- + ------------- + + function Belongs + (Element : Wide_Wide_Character; + Set : Wide_Wide_Maps.Wide_Wide_Character_Set; + Test : Membership) return Boolean + is + begin + if Test = Inside then + return Is_In (Element, Set); + else + return not Is_In (Element, Set); + end if; + end Belongs; + + ----------- + -- Count -- + ----------- + + function Count + (Source : Wide_Wide_String; + Pattern : Wide_Wide_String; + Mapping : Wide_Wide_Maps.Wide_Wide_Character_Mapping := + Wide_Wide_Maps.Identity) + return Natural + is + N : Natural; + J : Natural; + + begin + if Pattern = "" then + raise Pattern_Error; + end if; + + -- Handle the case of non-identity mappings by creating a mapped + -- string and making a recursive call using the identity mapping + -- on this mapped string. + + if Mapping /= Wide_Wide_Maps.Identity then + declare + Mapped_Source : Wide_Wide_String (Source'Range); + + begin + for J in Source'Range loop + Mapped_Source (J) := Value (Mapping, Source (J)); + end loop; + + return Count (Mapped_Source, Pattern); + end; + end if; + + N := 0; + J := Source'First; + + while J <= Source'Last - (Pattern'Length - 1) loop + if Source (J .. J + (Pattern'Length - 1)) = Pattern then + N := N + 1; + J := J + Pattern'Length; + else + J := J + 1; + end if; + end loop; + + return N; + end Count; + + function Count + (Source : Wide_Wide_String; + Pattern : Wide_Wide_String; + Mapping : Wide_Wide_Maps.Wide_Wide_Character_Mapping_Function) + return Natural + is + Mapped_Source : Wide_Wide_String (Source'Range); + + begin + for J in Source'Range loop + Mapped_Source (J) := Mapping (Source (J)); + end loop; + + return Count (Mapped_Source, Pattern); + end Count; + + function Count + (Source : Wide_Wide_String; + Set : Wide_Wide_Maps.Wide_Wide_Character_Set) return Natural + is + N : Natural := 0; + + begin + for J in Source'Range loop + if Is_In (Source (J), Set) then + N := N + 1; + end if; + end loop; + + return N; + end Count; + + ---------------- + -- Find_Token -- + ---------------- + + procedure Find_Token + (Source : Wide_Wide_String; + Set : Wide_Wide_Maps.Wide_Wide_Character_Set; + Test : Membership; + First : out Positive; + Last : out Natural) + is + begin + for J in Source'Range loop + if Belongs (Source (J), Set, Test) then + First := J; + + for K in J + 1 .. Source'Last loop + if not Belongs (Source (K), Set, Test) then + Last := K - 1; + return; + end if; + end loop; + + -- Here if J indexes 1st char of token, and all chars + -- after J are in the token + + Last := Source'Last; + return; + end if; + end loop; + + -- Here if no token found + + First := Source'First; + Last := 0; + end Find_Token; + + ----------- + -- Index -- + ----------- + + function Index + (Source : Wide_Wide_String; + Pattern : Wide_Wide_String; + Going : Direction := Forward; + Mapping : Wide_Wide_Maps.Wide_Wide_Character_Mapping := + Wide_Wide_Maps.Identity) + return Natural + is + begin + if Pattern = "" then + raise Pattern_Error; + end if; + + -- Handle the case of non-identity mappings by creating a mapped + -- string and making a recursive call using the identity mapping + -- on this mapped string. + + if Mapping /= Identity then + declare + Mapped_Source : Wide_Wide_String (Source'Range); + + begin + for J in Source'Range loop + Mapped_Source (J) := Value (Mapping, Source (J)); + end loop; + + return Index (Mapped_Source, Pattern, Going); + end; + end if; + + if Going = Forward then + for J in Source'First .. Source'Last - Pattern'Length + 1 loop + if Pattern = Source (J .. J + Pattern'Length - 1) then + return J; + end if; + end loop; + + else -- Going = Backward + for J in reverse Source'First .. Source'Last - Pattern'Length + 1 loop + if Pattern = Source (J .. J + Pattern'Length - 1) then + return J; + end if; + end loop; + end if; + + -- Fall through if no match found. Note that the loops are skipped + -- completely in the case of the pattern being longer than the source. + + return 0; + end Index; + + function Index + (Source : Wide_Wide_String; + Pattern : Wide_Wide_String; + Going : Direction := Forward; + Mapping : Wide_Wide_Maps.Wide_Wide_Character_Mapping_Function) + return Natural + is + Mapped_Source : Wide_Wide_String (Source'Range); + + begin + for J in Source'Range loop + Mapped_Source (J) := Mapping (Source (J)); + end loop; + + return Index (Mapped_Source, Pattern, Going); + end Index; + + function Index + (Source : Wide_Wide_String; + Set : Wide_Wide_Maps.Wide_Wide_Character_Set; + Test : Membership := Inside; + Going : Direction := Forward) return Natural + is + begin + if Going = Forward then + for J in Source'Range loop + if Belongs (Source (J), Set, Test) then + return J; + end if; + end loop; + + else -- Going = Backward + for J in reverse Source'Range loop + if Belongs (Source (J), Set, Test) then + return J; + end if; + end loop; + end if; + + -- Fall through if no match + + return 0; + end Index; + + function Index + (Source : Wide_Wide_String; + Pattern : Wide_Wide_String; + From : Positive; + Going : Direction := Forward; + Mapping : Wide_Wide_Maps.Wide_Wide_Character_Mapping := + Wide_Wide_Maps.Identity) + return Natural + is + begin + if Going = Forward then + if From < Source'First then + raise Index_Error; + end if; + + return + Index (Source (From .. Source'Last), Pattern, Forward, Mapping); + + else + if From > Source'Last then + raise Index_Error; + end if; + + return + Index (Source (Source'First .. From), Pattern, Backward, Mapping); + end if; + end Index; + + function Index + (Source : Wide_Wide_String; + Pattern : Wide_Wide_String; + From : Positive; + Going : Direction := Forward; + Mapping : Wide_Wide_Maps.Wide_Wide_Character_Mapping_Function) + return Natural + is + begin + if Going = Forward then + if From < Source'First then + raise Index_Error; + end if; + + return Index + (Source (From .. Source'Last), Pattern, Forward, Mapping); + + else + if From > Source'Last then + raise Index_Error; + end if; + + return Index + (Source (Source'First .. From), Pattern, Backward, Mapping); + end if; + end Index; + + function Index + (Source : Wide_Wide_String; + Set : Wide_Wide_Maps.Wide_Wide_Character_Set; + From : Positive; + Test : Membership := Inside; + Going : Direction := Forward) return Natural + is + begin + if Going = Forward then + if From < Source'First then + raise Index_Error; + end if; + + return + Index (Source (From .. Source'Last), Set, Test, Forward); + + else + if From > Source'Last then + raise Index_Error; + end if; + + return + Index (Source (Source'First .. From), Set, Test, Backward); + end if; + end Index; + + --------------------- + -- Index_Non_Blank -- + --------------------- + + function Index_Non_Blank + (Source : Wide_Wide_String; + Going : Direction := Forward) return Natural + is + begin + if Going = Forward then + for J in Source'Range loop + if Source (J) /= Wide_Wide_Space then + return J; + end if; + end loop; + + else -- Going = Backward + for J in reverse Source'Range loop + if Source (J) /= Wide_Wide_Space then + return J; + end if; + end loop; + end if; + + -- Fall through if no match + + return 0; + end Index_Non_Blank; + + function Index_Non_Blank + (Source : Wide_Wide_String; + From : Positive; + Going : Direction := Forward) return Natural + is + begin + if Going = Forward then + if From < Source'First then + raise Index_Error; + end if; + + return + Index_Non_Blank (Source (From .. Source'Last), Forward); + + else + if From > Source'Last then + raise Index_Error; + end if; + + return + Index_Non_Blank (Source (Source'First .. From), Backward); + end if; + end Index_Non_Blank; + +end Ada.Strings.Wide_Wide_Search; |