gcc/ada/a-strsup.ads

   1 ------------------------------------------------------------------------------
   2 --                                                                          --
   3 --                         GNAT RUN-TIME COMPONENTS                         --
   4 --                                                                          --
   5 --             A D A . S T R I N G S . S U P E R B O U N D E D              --
   6 --                                                                          --
   7 --                                 S p e c                                  --
   8 --                                                                          --
   9 --          Copyright (C) 2003-2010, Free Software Foundation, Inc.         --
  10 --                                                                          --
  11 -- GNAT is free software;  you can  redistribute it  and/or modify it under --
  12 -- terms of the  GNU General Public License as published  by the Free Soft- --
  13 -- ware  Foundation;  either version 3,  or (at your option) any later ver- --
  14 -- sion.  GNAT is distributed in the hope that it will be useful, but WITH- --
  15 -- OUT ANY WARRANTY;  without even the  implied warranty of MERCHANTABILITY --
  16 -- or FITNESS FOR A PARTICULAR PURPOSE.                                     --
  17 --                                                                          --
  18 -- As a special exception under Section 7 of GPL version 3, you are granted --
  19 -- additional permissions described in the GCC Runtime Library Exception,   --
  20 -- version 3.1, as published by the Free Software Foundation.               --
  21 --                                                                          --
  22 -- You should have received a copy of the GNU General Public License and    --
  23 -- a copy of the GCC Runtime Library Exception along with this program;     --
  24 -- see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see    --
  25 -- <http://www.gnu.org/licenses/>.                                          --
  26 --                                                                          --
  27 -- GNAT was originally developed  by the GNAT team at  New York University. --
  28 -- Extensive contributions were provided by Ada Core Technologies Inc.      --
  29 --                                                                          --
  30 ------------------------------------------------------------------------------
  31
  32 --  This non generic package contains most of the implementation of the
  33 --  generic package Ada.Strings.Bounded.Generic_Bounded_Length.
  34
  35 --  It defines type Super_String as a discriminated record with the maximum
  36 --  length as the discriminant. Individual instantiations of Strings.Bounded
  37 --  use this type with an appropriate discriminant value set.
  38
  39 with Ada.Strings.Maps;
  40
  41 package Ada.Strings.Superbounded is
  42    pragma Preelaborate;
  43
  44    type Super_String (Max_Length : Positive) is record
  45       Current_Length : Natural := 0;
  46       Data           : String (1 .. Max_Length) := (others => ASCII.NUL);
  47    end record;
  48    --  Type Bounded_String in Ada.Strings.Bounded.Generic_Bounded_Length is
  49    --  derived from this type, with the constraint of the maximum length.
  50
  51    --  The subprograms defined for Super_String are similar to those
  52    --  defined for Bounded_String, except that they have different names, so
  53    --  that they can be renamed in Ada.Strings.Bounded.Generic_Bounded_Length.
  54
  55    function Super_Length (Source : Super_String) return Natural;
  56
  57    --------------------------------------------------------
  58    -- Conversion, Concatenation, and Selection Functions --
  59    --------------------------------------------------------
  60
  61    function To_Super_String
  62      (Source     : String;
  63       Max_Length : Natural;
  64       Drop       : Truncation := Error) return Super_String;
  65    --  Note the additional parameter Max_Length, which specifies the maximum
  66    --  length setting of the resulting Super_String value.
  67
  68    --  The following procedures have declarations (and semantics) that are
  69    --  exactly analogous to those declared in Ada.Strings.Bounded.
  70
  71    function Super_To_String (Source : Super_String) return String;
  72
  73    procedure Set_Super_String
  74      (Target : out Super_String;
  75       Source : String;
  76       Drop   : Truncation := Error);
  77
  78    function Super_Append
  79      (Left  : Super_String;
  80       Right : Super_String;
  81       Drop  : Truncation  := Error) return Super_String;
  82
  83    function Super_Append
  84      (Left  : Super_String;
  85       Right : String;
  86       Drop  : Truncation := Error) return Super_String;
  87
  88    function Super_Append
  89      (Left  : String;
  90       Right : Super_String;
  91       Drop  : Truncation := Error) return Super_String;
  92
  93    function Super_Append
  94      (Left  : Super_String;
  95       Right : Character;
  96       Drop  : Truncation := Error) return Super_String;
  97
  98    function Super_Append
  99      (Left  : Character;
 100       Right : Super_String;
 101       Drop  : Truncation := Error) return Super_String;
 102
 103    procedure Super_Append
 104      (Source   : in out Super_String;
 105       New_Item : Super_String;
 106       Drop     : Truncation  := Error);
 107
 108    procedure Super_Append
 109      (Source   : in out Super_String;
 110       New_Item : String;
 111       Drop     : Truncation  := Error);
 112
 113    procedure Super_Append
 114      (Source   : in out Super_String;
 115       New_Item : Character;
 116       Drop     : Truncation  := Error);
 117
 118    function Concat
 119      (Left  : Super_String;
 120       Right : Super_String) return Super_String;
 121
 122    function Concat
 123      (Left  : Super_String;
 124       Right : String) return Super_String;
 125
 126    function Concat
 127      (Left  : String;
 128       Right : Super_String) return Super_String;
 129
 130    function Concat
 131      (Left  : Super_String;
 132       Right : Character) return Super_String;
 133
 134    function Concat
 135      (Left  : Character;
 136       Right : Super_String) return Super_String;
 137
 138    function Super_Element
 139      (Source : Super_String;
 140       Index  : Positive) return Character;
 141
 142    procedure Super_Replace_Element
 143      (Source : in out Super_String;
 144       Index  : Positive;
 145       By     : Character);
 146
 147    function Super_Slice
 148      (Source : Super_String;
 149       Low    : Positive;
 150       High   : Natural) return String;
 151
 152    function Super_Slice
 153      (Source : Super_String;
 154       Low    : Positive;
 155       High   : Natural) return Super_String;
 156
 157    procedure Super_Slice
 158      (Source : Super_String;
 159       Target : out Super_String;
 160       Low    : Positive;
 161       High   : Natural);
 162
 163    function "="
 164      (Left  : Super_String;
 165       Right : Super_String) return Boolean;
 166
 167    function Equal
 168      (Left  : Super_String;
 169       Right : Super_String) return Boolean renames "=";
 170
 171    function Equal
 172      (Left  : Super_String;
 173       Right : String) return Boolean;
 174
 175    function Equal
 176      (Left  : String;
 177       Right : Super_String) return Boolean;
 178
 179    function Less
 180      (Left  : Super_String;
 181       Right : Super_String) return Boolean;
 182
 183    function Less
 184      (Left  : Super_String;
 185       Right : String) return Boolean;
 186
 187    function Less
 188      (Left  : String;
 189       Right : Super_String) return Boolean;
 190
 191    function Less_Or_Equal
 192      (Left  : Super_String;
 193       Right : Super_String) return Boolean;
 194
 195    function Less_Or_Equal
 196      (Left  : Super_String;
 197       Right : String) return Boolean;
 198
 199    function Less_Or_Equal
 200      (Left  : String;
 201       Right : Super_String) return Boolean;
 202
 203    function Greater
 204      (Left  : Super_String;
 205       Right : Super_String) return Boolean;
 206
 207    function Greater
 208      (Left  : Super_String;
 209       Right : String) return Boolean;
 210
 211    function Greater
 212      (Left  : String;
 213       Right : Super_String) return Boolean;
 214
 215    function Greater_Or_Equal
 216      (Left  : Super_String;
 217       Right : Super_String) return Boolean;
 218
 219    function Greater_Or_Equal
 220      (Left  : Super_String;
 221       Right : String) return Boolean;
 222
 223    function Greater_Or_Equal
 224      (Left  : String;
 225       Right : Super_String) return Boolean;
 226
 227    ----------------------
 228    -- Search Functions --
 229    ----------------------
 230
 231    function Super_Index
 232      (Source  : Super_String;
 233       Pattern : String;
 234       Going   : Direction := Forward;
 235       Mapping : Maps.Character_Mapping := Maps.Identity) return Natural;
 236
 237    function Super_Index
 238      (Source  : Super_String;
 239       Pattern : String;
 240       Going   : Direction := Forward;
 241       Mapping : Maps.Character_Mapping_Function) return Natural;
 242
 243    function Super_Index
 244      (Source : Super_String;
 245       Set    : Maps.Character_Set;
 246       Test   : Membership := Inside;
 247       Going  : Direction  := Forward) return Natural;
 248
 249    function Super_Index
 250      (Source  : Super_String;
 251       Pattern : String;
 252       From    : Positive;
 253       Going   : Direction := Forward;
 254       Mapping : Maps.Character_Mapping := Maps.Identity) return Natural;
 255
 256    function Super_Index
 257      (Source  : Super_String;
 258       Pattern : String;
 259       From    : Positive;
 260       Going   : Direction := Forward;
 261       Mapping : Maps.Character_Mapping_Function) return Natural;
 262
 263    function Super_Index
 264      (Source : Super_String;
 265       Set    : Maps.Character_Set;
 266       From   : Positive;
 267       Test   : Membership := Inside;
 268       Going  : Direction := Forward) return Natural;
 269
 270    function Super_Index_Non_Blank
 271      (Source : Super_String;
 272       Going  : Direction := Forward) return Natural;
 273
 274    function Super_Index_Non_Blank
 275      (Source : Super_String;
 276       From   : Positive;
 277       Going  : Direction := Forward) return Natural;
 278
 279    function Super_Count
 280      (Source  : Super_String;
 281       Pattern : String;
 282       Mapping : Maps.Character_Mapping := Maps.Identity) return Natural;
 283
 284    function Super_Count
 285      (Source  : Super_String;
 286       Pattern : String;
 287       Mapping : Maps.Character_Mapping_Function) return Natural;
 288
 289    function Super_Count
 290      (Source : Super_String;
 291       Set    : Maps.Character_Set) return Natural;
 292
 293    procedure Super_Find_Token
 294      (Source : Super_String;
 295       Set    : Maps.Character_Set;
 296       From   : Positive;
 297       Test   : Membership;
 298       First  : out Positive;
 299       Last   : out Natural);
 300
 301    procedure Super_Find_Token
 302      (Source : Super_String;
 303       Set    : Maps.Character_Set;
 304       Test   : Membership;
 305       First  : out Positive;
 306       Last   : out Natural);
 307
 308    ------------------------------------
 309    -- String Translation Subprograms --
 310    ------------------------------------
 311
 312    function Super_Translate
 313      (Source  : Super_String;
 314       Mapping : Maps.Character_Mapping) return Super_String;
 315
 316    procedure Super_Translate
 317      (Source   : in out Super_String;
 318       Mapping  : Maps.Character_Mapping);
 319
 320    function Super_Translate
 321      (Source  : Super_String;
 322       Mapping : Maps.Character_Mapping_Function) return Super_String;
 323
 324    procedure Super_Translate
 325      (Source  : in out Super_String;
 326       Mapping : Maps.Character_Mapping_Function);
 327
 328    ---------------------------------------
 329    -- String Transformation Subprograms --
 330    ---------------------------------------
 331
 332    function Super_Replace_Slice
 333      (Source : Super_String;
 334       Low    : Positive;
 335       High   : Natural;
 336       By     : String;
 337       Drop   : Truncation := Error) return Super_String;
 338
 339    procedure Super_Replace_Slice
 340      (Source  : in out Super_String;
 341       Low     : Positive;
 342       High    : Natural;
 343       By      : String;
 344       Drop    : Truncation := Error);
 345
 346    function Super_Insert
 347      (Source   : Super_String;
 348       Before   : Positive;
 349       New_Item : String;
 350       Drop     : Truncation := Error) return Super_String;
 351
 352    procedure Super_Insert
 353      (Source   : in out Super_String;
 354       Before   : Positive;
 355       New_Item : String;
 356       Drop     : Truncation := Error);
 357
 358    function Super_Overwrite
 359      (Source   : Super_String;
 360       Position : Positive;
 361       New_Item : String;
 362       Drop     : Truncation := Error) return Super_String;
 363
 364    procedure Super_Overwrite
 365      (Source    : in out Super_String;
 366       Position  : Positive;
 367       New_Item  : String;
 368       Drop      : Truncation := Error);
 369
 370    function Super_Delete
 371      (Source  : Super_String;
 372       From    : Positive;
 373       Through : Natural) return Super_String;
 374
 375    procedure Super_Delete
 376      (Source  : in out Super_String;
 377       From    : Positive;
 378       Through : Natural);
 379
 380    ---------------------------------
 381    -- String Selector Subprograms --
 382    ---------------------------------
 383
 384    function Super_Trim
 385      (Source : Super_String;
 386       Side   : Trim_End) return Super_String;
 387
 388    procedure Super_Trim
 389      (Source : in out Super_String;
 390       Side   : Trim_End);
 391
 392    function Super_Trim
 393      (Source : Super_String;
 394       Left   : Maps.Character_Set;
 395       Right  : Maps.Character_Set) return Super_String;
 396
 397    procedure Super_Trim
 398      (Source : in out Super_String;
 399       Left   : Maps.Character_Set;
 400       Right  : Maps.Character_Set);
 401
 402    function Super_Head
 403      (Source : Super_String;
 404       Count  : Natural;
 405       Pad    : Character := Space;
 406       Drop   : Truncation := Error) return Super_String;
 407
 408    procedure Super_Head
 409      (Source : in out Super_String;
 410       Count  : Natural;
 411       Pad    : Character := Space;
 412       Drop   : Truncation := Error);
 413
 414    function Super_Tail
 415      (Source : Super_String;
 416       Count  : Natural;
 417       Pad    : Character := Space;
 418       Drop   : Truncation := Error) return Super_String;
 419
 420    procedure Super_Tail
 421      (Source : in out Super_String;
 422       Count  : Natural;
 423       Pad    : Character := Space;
 424       Drop   : Truncation := Error);
 425
 426    ------------------------------------
 427    -- String Constructor Subprograms --
 428    ------------------------------------
 429
 430    --  Note: in some of the following routines, there is an extra parameter
 431    --  Max_Length which specifies the value of the maximum length for the
 432    --  resulting Super_String value.
 433
 434    function Times
 435      (Left       : Natural;
 436       Right      : Character;
 437       Max_Length : Positive) return Super_String;
 438    --  Note the additional parameter Max_Length
 439
 440    function Times
 441      (Left       : Natural;
 442       Right      : String;
 443       Max_Length : Positive) return Super_String;
 444    --  Note the additional parameter Max_Length
 445
 446    function Times
 447      (Left  : Natural;
 448       Right : Super_String) return Super_String;
 449
 450    function Super_Replicate
 451      (Count      : Natural;
 452       Item       : Character;
 453       Drop       : Truncation := Error;
 454       Max_Length : Positive) return Super_String;
 455    --  Note the additional parameter Max_Length
 456
 457    function Super_Replicate
 458      (Count      : Natural;
 459       Item       : String;
 460       Drop       : Truncation := Error;
 461       Max_Length : Positive) return Super_String;
 462    --  Note the additional parameter Max_Length
 463
 464    function Super_Replicate
 465      (Count : Natural;
 466       Item  : Super_String;
 467       Drop  : Truncation := Error) return Super_String;
 468
 469 private
 470       --  Pragma Inline declarations
 471
 472       pragma Inline ("=");
 473       pragma Inline (Less);
 474       pragma Inline (Less_Or_Equal);
 475       pragma Inline (Greater);
 476       pragma Inline (Greater_Or_Equal);
 477       pragma Inline (Concat);
 478       pragma Inline (Super_Count);
 479       pragma Inline (Super_Element);
 480       pragma Inline (Super_Find_Token);
 481       pragma Inline (Super_Index);
 482       pragma Inline (Super_Index_Non_Blank);
 483       pragma Inline (Super_Length);
 484       pragma Inline (Super_Replace_Element);
 485       pragma Inline (Super_Slice);
 486       pragma Inline (Super_To_String);
 487
 488 end Ada.Strings.Superbounded;