gcc/ada/types.h

   1 /****************************************************************************
   2  *                                                                          *
   3  *                         GNAT COMPILER COMPONENTS                         *
   4  *                                                                          *
   5  *                                T Y P E S                                 *
   6  *                                                                          *
   7  *                              C Header File                               *
   8  *                                                                          *
   9  *                                                                          *
  10  *          Copyright (C) 1992-2002, Free Software Foundation, Inc.         *
  11  *                                                                          *
  12  * GNAT is free software;  you can  redistribute it  and/or modify it under *
  13  * terms of the  GNU General Public License as published  by the Free Soft- *
  14  * ware  Foundation;  either version 2,  or (at your option) any later ver- *
  15  * sion.  GNAT is distributed in the hope that it will be useful, but WITH- *
  16  * OUT ANY WARRANTY;  without even the  implied warranty of MERCHANTABILITY *
  17  * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License *
  18  * for  more details.  You should have  received  a copy of the GNU General *
  19  * Public License  distributed with GNAT;  see file COPYING.  If not, write *
  20  * to  the Free Software Foundation,  59 Temple Place - Suite 330,  Boston, *
  21  * MA 02111-1307, USA.                                                      *
  22  *                                                                          *
  23  * GNAT was originally developed  by the GNAT team at  New York University. *
  24  * Extensive contributions were provided by Ada Core Technologies Inc.      *
  25  *                                                                          *
  26  ****************************************************************************/
  27
  28 /* This is the C file that corresponds to the Ada package spec Types. It was
  29    created manually from the files types.ads and types.adb.
  30
  31    This package contains host independent type definitions which are used
  32    throughout the compiler modules. The comments in the C version are brief
  33    reminders of the purpose of each declaration.  For complete documentation,
  34    see the Ada version of these definitions.  */
  35
  36 /* Boolean Types:  */
  37
  38 /* Boolean type (cannot use enum, because of bit field restriction on some
  39    compilers).  */
  40 typedef unsigned char Boolean;
  41 #define False 0
  42 #define True  1
  43
  44 /* General Use Integer Types */
  45
  46 /* Signed 32/bit integer */
  47 typedef int Int;
  48
  49 /* Signed 16 bit integer */
  50 typedef short Short;
  51
  52 /* Non/negative Int values */
  53 typedef Int Nat;
  54
  55 /* Positive Int values */
  56 typedef Int Pos;
  57
  58 /* 8/bit unsigned integer */
  59 typedef char Byte;
  60
  61 /* 8/Bit Character and String Types:  */
  62
  63 /* 8/bit character type */
  64 typedef char Char;
  65
  66 /* Graphic characters, as defined in ARM */
  67 typedef Char Graphic_Character;
  68
  69 /* Line terminator characters (LF, VT, FF, CR) */
  70 typedef Char Line_Terminator;
  71
  72 /* Characters with the upper bit set */
  73 typedef Char Upper_Half_Character;
  74
  75 /* String type built on Char (note that zero is an OK index) */
  76 typedef Char *Str;
  77
  78 /* Pointer to string of Chars */
  79 typedef Char *Str_Ptr;
  80
  81 /* Types for the fat pointer used for strings and the template it
  82    points to.  */
  83 typedef struct {int Low_Bound, High_Bound; } String_Template;
  84 typedef struct {const char *Array; String_Template *Bounds; }
  85         __attribute ((aligned (sizeof (char *) * 2))) Fat_Pointer;
  86
  87 /* Types for Node/Entity Kinds:  */
  88
  89 /* The reason that these are defined here in the C version, rather than in the
  90    corresponding packages is that the requirement for putting bodies of
  91    inlined stuff IN the C header changes the dependencies.  Both a-sinfo.h
  92    and a-einfo.h now reference routines defined in tree.h.
  93
  94    Note: these types would more naturally be defined as unsigned  char, but
  95    once again, the annoying restriction on bit fields for some compilers
  96    bites us!  */
  97
  98 typedef unsigned int Node_Kind;
  99 typedef unsigned int Entity_Kind;
 100
 101 /* Types used for Text Buffer Handling:  */
 102
 103 /* Type used for subscripts in text buffer.  */
 104 typedef Int Text_Ptr;
 105
 106 /* Text buffer used to hold source file or library information file.  */
 107 typedef Char *Text_Buffer;
 108
 109 /* Pointer to text buffer.  */
 110 typedef Char *Text_Buffer_Ptr;
 111
 112 /* Types used for Source Input Handling:  */
 113
 114 /* Line number type, used for storing all line numbers.  */
 115 typedef Int Line_Number_Type;
 116
 117 /* Column number type, used for storing all column numbers.  */
 118 typedef Int Column_Number_Type;
 119
 120 /* Type used to store text of a source file.  */
 121 typedef Text_Buffer Source_Buffer;
 122
 123 /* Pointer to source buffer. */
 124 typedef Text_Buffer_Ptr Source_Buffer_Ptr;
 125
 126 /* Type used for source location.  */
 127 typedef Text_Ptr Source_Ptr;
 128
 129 /* Value used to indicate no source position set.  */
 130 #define No_Location -1
 131
 132 /* Used for Sloc in all nodes in the representation of package Standard.  */
 133 #define Standard_Location -2
 134
 135 /* Type used for union of all possible ID values covering all ranges */
 136 typedef int Union_Id;
 137
 138 /* Range definitions for Tree Data:  */
 139
 140 #define List_Low_Bound          -100000000
 141 #define List_High_Bound         0
 142
 143 #define Node_Low_Bound          0
 144 #define Node_High_Bound         99999999
 145
 146 #define Elist_Low_Bound         100000000
 147 #define Elist_High_Bound        199999999
 148
 149 #define Elmt_Low_Bound          200000000
 150 #define Elmt_High_Bound         299999999
 151
 152 #define Names_Low_Bound         300000000
 153 #define Names_High_Bound        399999999
 154
 155 #define Strings_Low_Bound       400000000
 156 #define Strings_High_Bound      499999999
 157
 158 #define Ureal_Low_Bound         500000000
 159 #define Ureal_High_Bound        599999999
 160
 161 #define Uint_Low_Bound          600000000
 162 #define Uint_Table_Start        2000000000
 163 #define Uint_High_Bound         2099999999
 164
 165 #define Char_Code_Bias          2100000000
 166
 167 SUBTYPE (List_Range,      Int, List_Low_Bound,    List_High_Bound)
 168 SUBTYPE (Node_Range,      Int, Node_Low_Bound,    Node_High_Bound)
 169 SUBTYPE (Elist_Range,     Int, Elist_Low_Bound,   Elist_High_Bound)
 170 SUBTYPE (Elmt_Range,      Int, Elmt_Low_Bound,    Elmt_High_Bound)
 171 SUBTYPE (Names_Range,     Int, Names_Low_Bound,   Names_High_Bound)
 172 SUBTYPE (Strings_Range,   Int, Strings_Low_Bound, Strings_High_Bound)
 173 SUBTYPE (Uint_Range,      Int, Uint_Low_Bound,    Uint_High_Bound)
 174 SUBTYPE (Ureal_Range,     Int, Ureal_Low_Bound,   Ureal_High_Bound)
 175 SUBTYPE (Char_Code_Range, Int, Char_Code_Bias,    (Char_Code_Bias + 65535))
 176
 177 /* Types for Names_Table Package:  */
 178
 179 typedef Int Name_Id;
 180
 181 /* Name_Id value for no name present.  */
 182 #define No_Name Names_Low_Bound
 183
 184 /* Name_Id value for bad name.  */
 185 #define Error_Name (Names_Low_Bound + 1)
 186
 187 /* First subscript of names table. */
 188 #define First_Name_Id (Names_Low_Bound + 2)
 189
 190 /* Types for Tree Package:  */
 191
 192 /* Subscript of nodes table entry.  */
 193 typedef Int Node_Id;
 194
 195 /* Used in semantics for Node_Id value referencing an entity.  */
 196 typedef Node_Id Entity_Id;
 197
 198 /* Null node.  */
 199 #define Empty 0
 200
 201 /* Error node.  */
 202 #define Error 1
 203
 204 /* Subscript of first allocated node.  */
 205 #define First_Node_Id Empty
 206
 207 /* Subscript of entry in lists table.  */
 208 typedef Int List_Id;
 209
 210 /* Indicates absence of a list.  */
 211 #define No_List 0
 212
 213 /* Error list. */
 214 #define Error_List List_Low_Bound
 215
 216 /* Subscript of first allocated list header.  */
 217 #define First_List_Id Error_List
 218
 219 /* Element list Id, subscript value of entry in lists table.  */
 220 typedef Int Elist_Id;
 221
 222 /* Used to indicate absence of an element list.  */
 223 #define No_Elist Elist_Low_Bound
 224
 225 /* Subscript of first allocated elist header */
 226 #define First_Elist_Id (No_Elist + 1)
 227
 228 /* Element Id, subscript value of entry in elements table.  */
 229 typedef Int Elmt_Id;
 230
 231 /* Used to indicate absence of a list element.  */
 232 #define No_Elmt Elmt_Low_Bound
 233
 234 /* Subscript of first allocated element */
 235 #define First_Elmt_Id (No_Elmt + 1)
 236
 237 /* Types for String_Table Package:  */
 238
 239 /* Subscript of strings table entry.  */
 240 typedef Int String_Id;
 241
 242 /* Used to indicate missing string Id.  */
 243 #define No_String Strings_Low_Bound
 244
 245 /* Subscript of first entry in strings table.  */
 246 #define First_String_Id (No_String + 1)
 247
 248 /* Types for Uint_Support Package:  */
 249
 250 /* Type used for representation of universal integers.  */
 251 typedef Int Uint;
 252
 253 /* Used to indicate missing Uint value.  */
 254 #define No_Uint Uint_Low_Bound
 255
 256 /* Base value used to represent Uint values.  */
 257 #define Base 32768
 258
 259 /* Minimum and maximum integers directly representable as Uint values */
 260 #define Min_Direct (-(Base - 1))
 261 #define Max_Direct ((Base - 1) * (Base - 1))
 262
 263 #define Uint_Direct_Bias  (Uint_Low_Bound + Base)
 264 #define Uint_Direct_First (Uint_Direct_Bias + Min_Direct)
 265 #define Uint_Direct_Last  (Uint_Direct_Bias + Max_Direct)
 266
 267 /* Define range of direct biased values */
 268 SUBTYPE (Uint_Direct, Uint, Uint_Direct_First, Uint_Direct_Last)
 269
 270 /* Constants in Uint format.  */
 271 #define Uint_0  (Uint_Direct_Bias + 0)
 272 #define Uint_1  (Uint_Direct_Bias + 1)
 273 #define Uint_2  (Uint_Direct_Bias + 2)
 274 #define Uint_10 (Uint_Direct_Bias + 10)
 275 #define Uint_16 (Uint_Direct_Bias + 16)
 276
 277 /* Types for Ureal_Support Package:  */
 278
 279 /* Type used for representation of universal reals.  */
 280 typedef Int Ureal;
 281
 282 /* Used to indicate missing Uint value.  */
 283 #define No_Ureal Ureal_Low_Bound
 284
 285 /* Subscript of first entry in Ureal table.  */
 286 #define Ureal_First_Entry (No_Ureal + 1)
 287
 288 /* Character Code Type:  */
 289
 290 /* Character code value, intended to be 16 bits.  */
 291 typedef short Char_Code;
 292
 293 /* Types Used for Library Management:  */
 294
 295 /* Unit number.  */
 296 typedef Int Unit_Number_Type;
 297
 298 /* Unit number value for main unit.  */
 299 #define Main_Unit 0
 300
 301 /* Type used for lines table.  */
 302 typedef Source_Ptr *Lines_Table_Type;
 303
 304 /* Type used for pointer to lines table.  */
 305 typedef Source_Ptr *Lines_Table_Ptr;
 306
 307 /* Length of time stamp value.  */
 308 #define Time_Stamp_Length 22
 309
 310 /* Type used to represent time stamp.  */
 311 typedef Char *Time_Stamp_Type;
 312
 313 /* Name_Id synonym used for file names.  */
 314 typedef Name_Id File_Name_Type;
 315
 316 /* Constant used to indicate no file found.  */
 317 #define No_File No_Name
 318
 319 /* Name_Id synonym used for unit names.  */
 320 typedef Name_Id Unit_Name_Type;
 321
 322 /* Definitions for mechanism type and values */
 323 typedef Int Mechanism_Type;
 324 #define Default            0
 325 #define By_Copy            (-1)
 326 #define By_Reference       (-2)
 327 #define By_Descriptor      (-3)
 328 #define By_Descriptor_UBS  (-4)
 329 #define By_Descriptor_UBSB (-5)
 330 #define By_Descriptor_UBA  (-6)
 331 #define By_Descriptor_S    (-7)
 332 #define By_Descriptor_SB   (-8)
 333 #define By_Descriptor_A    (-9)
 334 #define By_Descriptor_NCA  (-10)
 335
 336 /* Definitions of Reason codes for Raise_xxx_Error nodes */
 337 #define CE_Access_Check_Failed              0
 338 #define CE_Access_Parameter_Is_Null         1
 339 #define CE_Discriminant_Check_Failed        2
 340 #define CE_Divide_By_Zero                   3
 341 #define CE_Explicit_Raise                   4
 342 #define CE_Index_Check_Failed               5
 343 #define CE_Invalid_Data                     6
 344 #define CE_Length_Check_Failed              7
 345 #define CE_Overflow_Check_Failed            8
 346 #define CE_Partition_Check_Failed           9
 347 #define CE_Range_Check_Failed              10
 348 #define CE_Tag_Check_Failed                11
 349 #define PE_Access_Before_Elaboration       12
 350 #define PE_Accessibility_Check_Failed      13
 351 #define PE_All_Guards_Closed               14
 352 #define PE_Duplicated_Entry_Address        15
 353 #define PE_Explicit_Raise                  16
 354 #define PE_Finalize_Raised_Exception       17
 355 #define PE_Invalid_Data                    18
 356 #define PE_Misaligned_Address_Value        19
 357 #define PE_Missing_Return                  20
 358 #define PE_Potentially_Blocking_Operation  21
 359 #define PE_Stubbed_Subprogram_Called       22
 360 #define PE_Unchecked_Union_Restriction     23
 361 #define SE_Empty_Storage_Pool              24
 362 #define SE_Explicit_Raise                  25
 363 #define SE_Infinite_Recursion              26
 364 #define SE_Object_Too_Large                27
 365 #define SE_Restriction_Violation           28
 366
 367 #define LAST_REASON_CODE                   28