gcc/ada/ali.ads

   1 ------------------------------------------------------------------------------
   2 --                                                                          --
   3 --                         GNAT COMPILER COMPONENTS                         --
   4 --                                                                          --
   5 --                                  A L I                                   --
   6 --                                                                          --
   7 --                                 S p e c                                  --
   8 --                                                                          --
   9 --          Copyright (C) 1992-2023, 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.  See the GNU General Public License --
  17 -- for  more details.  You should have  received  a copy of the GNU General --
  18 -- Public License  distributed with GNAT; see file COPYING3.  If not, go to --
  19 -- http://www.gnu.org/licenses for a complete copy of the license.          --
  20 --                                                                          --
  21 -- GNAT was originally developed  by the GNAT team at  New York University. --
  22 -- Extensive contributions were provided by Ada Core Technologies Inc.      --
  23 --                                                                          --
  24 ------------------------------------------------------------------------------
  25
  26 --  This package defines the internal data structures used for representation
  27 --  of Ada Library Information (ALI) acquired from the ALI files generated by
  28 --  the front end.
  29
  30 with Casing;  use Casing;
  31 with Gnatvsn; use Gnatvsn;
  32 with Namet;   use Namet;
  33 with Rident;  use Rident;
  34 with Table;
  35 with Types;   use Types;
  36
  37 with GNAT.Dynamic_Tables;
  38 with GNAT.HTable; use GNAT.HTable;
  39
  40 package ALI is
  41
  42    --------------
  43    -- Id Types --
  44    --------------
  45
  46    type ALI_Id is range 0 .. 99_999_999;
  47    --  Id values used for ALIs table entries
  48
  49    type CUDA_Kernel_Id is range 0 .. 99_999_999;
  50    --  Id values used for CUDA_Kernel table entries
  51
  52    type Unit_Id is range 0 .. 99_999_999;
  53    --  Id values used for Unit table entries
  54
  55    type With_Id is range 0 .. 99_999_999;
  56    --  Id values used for Withs table entries
  57
  58    type Arg_Id is range 0 .. 99_999_999;
  59    --  Id values used for argument table entries
  60
  61    type Sdep_Id is range 0 .. 99_999_999;
  62    --  Id values used for Sdep table entries
  63
  64    type Source_Id is range 0 .. 99_999_999;
  65    --  Id values used for Source table entries
  66
  67    type Interrupt_State_Id is range 0 .. 99_999_999;
  68    --  Id values used for Interrupt_State table entries
  69
  70    type Priority_Specific_Dispatching_Id is range 0 .. 99_999_999;
  71    --  Id values used for Priority_Specific_Dispatching table entries
  72
  73    type Invocation_Construct_Id is range 0 .. 99_999_999;
  74    --  Id values used for Invocation_Constructs table entries
  75
  76    type Invocation_Relation_Id is range 0 .. 99_999_999;
  77    --  Id values used for Invocation_Relations table entries
  78
  79    type Invocation_Signature_Id is range 0 .. 99_999_999;
  80    --  Id values used for Invocation_Signatures table entries
  81
  82    function Present (IC_Id : Invocation_Construct_Id) return Boolean;
  83    pragma Inline (Present);
  84    --  Determine whether invocation construct IC_Id exists
  85
  86    function Present (IR_Id : Invocation_Relation_Id) return Boolean;
  87    pragma Inline (Present);
  88    --  Determine whether invocation relation IR_Id exists
  89
  90    function Present (IS_Id : Invocation_Signature_Id) return Boolean;
  91    pragma Inline (Present);
  92    --  Determine whether invocation signature IS_Id exists
  93
  94    function Present (Dep : Sdep_Id) return Boolean;
  95    pragma Inline (Present);
  96    --  Determine whether dependant Dep exists
  97
  98    function Present (U_Id : Unit_Id) return Boolean;
  99    pragma Inline (Present);
 100    --  Determine whether unit U_Id exists
 101
 102    function Present (W_Id : With_Id) return Boolean;
 103    pragma Inline (Present);
 104    --  Determine whether with W_Id exists
 105
 106    --------------------
 107    -- ALI File Table --
 108    --------------------
 109
 110    --  Each ALI file read generates an entry in the ALIs table
 111
 112    No_ALI_Id : constant ALI_Id := ALI_Id'First;
 113    --  Special value indicating no ALI entry
 114
 115    First_ALI_Entry : constant ALI_Id := No_ALI_Id + 1;
 116    --  Id of first actual entry in table
 117
 118    --  The following type enumerates all possible invocation-graph encoding
 119    --  kinds.
 120
 121    type Invocation_Graph_Encoding_Kind is
 122      (Endpoints_Encoding,
 123       --  The invocation construct and relation lines contain information for
 124       --  the start construct and end target found on an invocation-graph path.
 125
 126       Full_Path_Encoding,
 127       --  The invocation construct and relation lines contain information for
 128       --  all constructs and targets found on a invocation-graph path.
 129
 130       No_Encoding);
 131
 132    type Main_Program_Type is (None, Proc, Func);
 133    --  Indicator of whether unit can be used as main program
 134
 135    type ALIs_Record is record
 136       Afile : File_Name_Type;
 137       --  Name of ALI file
 138
 139       Ofile_Full_Name : File_Name_Type;
 140       --  Full name of object file corresponding to the ALI file
 141
 142       Sfile : File_Name_Type;
 143       --  Name of source file that generates this ALI file (which is equal
 144       --  to the name of the source file in the first unit table entry for
 145       --  this ALI file, since the body if present is always first).
 146
 147       Ver : String (1 .. Ver_Len_Max);
 148       --  Value of library version (V line in ALI file). Not set if
 149       --  V lines are ignored as a result of the Ignore_Lines parameter.
 150
 151       Ver_Len : Natural;
 152       --  Length of characters stored in Ver. Not set if V lines are ignored as
 153       --  a result of the Ignore_Lines parameter.
 154
 155       SAL_Interface : Boolean;
 156       --  Set True when this is an interface to a standalone library
 157
 158       First_Unit : Unit_Id;
 159       --  Id of first Unit table entry for this file
 160
 161       Last_Unit : Unit_Id;
 162       --  Id of last Unit table entry for this file
 163
 164       First_Sdep : Sdep_Id;
 165       --  Id of first Sdep table entry for this file
 166
 167       Last_Sdep : Sdep_Id;
 168       --  Id of last Sdep table entry for this file
 169
 170       Main_Program : Main_Program_Type;
 171       --  Indicator of whether first unit can be used as main program. Not set
 172       --  if 'M' appears in Ignore_Lines.
 173
 174       Main_Priority : Int;
 175       --  Indicates priority value if Main_Program field indicates that this
 176       --  can be a main program. A value of -1 (No_Main_Priority) indicates
 177       --  that no parameter was found, or no M line was present. Not set if
 178       --  'M' appears in Ignore_Lines.
 179
 180       Main_CPU : Int;
 181       --  Indicates processor if Main_Program field indicates that this can
 182       --  be a main program. A value of -1 (No_Main_CPU) indicates that no C
 183       --  parameter was found, or no M line was present. Not set if 'M' appears
 184       --  in Ignore_Lines.
 185
 186       Time_Slice_Value : Int;
 187       --  Indicates value of time slice parameter from T=xxx on main program
 188       --  line. A value of -1 indicates that no T=xxx parameter was found, or
 189       --  no M line was present. Not set if 'M' appears in Ignore_Lines.
 190
 191       WC_Encoding : Character;
 192       --  Wide character encoding if main procedure. Otherwise not relevant.
 193       --  Not set if 'M' appears in Ignore_Lines.
 194
 195       Locking_Policy : Character;
 196       --  Indicates locking policy for units in this file. Space means tasking
 197       --  was not used, or that no Locking_Policy pragma was present or that
 198       --  this is a language defined unit. Otherwise set to first character
 199       --  (upper case) of policy name. Not set if 'P' appears in Ignore_Lines.
 200
 201       Partition_Elaboration_Policy : Character;
 202       --  Indicates partition elaboration policy for units in this file. Space
 203       --  means that no Partition_Elaboration_Policy pragma was present or that
 204       --  this is a language defined unit. Otherwise set to first character
 205       --  (upper case) of policy name. Not set if 'P' appears in Ignore_Lines.
 206
 207       Queuing_Policy : Character;
 208       --  Indicates queuing policy for units in this file. Space means tasking
 209       --  was not used, or that no Queuing_Policy pragma was present or that
 210       --  this is a language defined unit. Otherwise set to first character
 211       --  (upper case) of policy name. Not set if 'P' appears in Ignore_Lines.
 212
 213       Task_Dispatching_Policy : Character;
 214       --  Indicates task dispatching policy for units in this file. Space means
 215       --  tasking was not used, or that no Task_Dispatching_Policy pragma was
 216       --  present or that this is a language defined unit. Otherwise set to
 217       --  first character (upper case) of policy name. Not set if 'P' appears
 218       --  in Ignore_Lines.
 219
 220       Compile_Errors : Boolean;
 221       --  Set to True if compile errors for unit. Note that No_Object will
 222       --  always be set as well in this case. Not set if 'P' appears in
 223       --  Ignore_Lines.
 224
 225       GNATprove_Mode : Boolean;
 226       --  Set to True if ALI and object file produced in GNATprove_Mode as
 227       --  signalled by GP appearing on the P line. Not set if 'P' appears in
 228       --  Ignore_Lines.
 229
 230       No_Component_Reordering : Boolean;
 231       --  Set to True if file was compiled with a configuration pragma file
 232       --  containing pragma No_Component_Reordering. Not set if 'P' appears
 233       --  in Ignore_Lines.
 234
 235       No_Object : Boolean;
 236       --  Set to True if no object file generated. Not set if 'P' appears in
 237       --  Ignore_Lines.
 238
 239       Normalize_Scalars : Boolean;
 240       --  Set to True if file was compiled with Normalize_Scalars. Not set if
 241       --  'P' appears in Ignore_Lines.
 242
 243       SSO_Default : Character;
 244       --  Set to 'H' or 'L' if file was compiled with a configuration pragma
 245       --  file containing Default_Scalar_Storage_Order (High/Low_Order_First).
 246       --  Set to ' ' if neither pragma was present. Not set if 'P' appears in
 247       --  Ignore_Lines.
 248
 249       Unit_Exception_Table : Boolean;
 250       --  Set to True if unit exception table pointer generated. Not set if 'P'
 251       --  appears in Ignore_Lines.
 252
 253       Zero_Cost_Exceptions : Boolean;
 254       --  Set to True if file was compiled with zero cost exceptions. Not set
 255       --  if 'P' appears in Ignore_Lines.
 256
 257       Restrictions : Restrictions_Info;
 258       --  Restrictions information reconstructed from R lines
 259
 260       First_CUDA_Kernel : CUDA_Kernel_Id;
 261       Last_CUDA_Kernel  : CUDA_Kernel_Id'Base;
 262       --  These point to the first and last entries in the CUDA_Kernels table
 263       --  for this unit. If there are no entries, First_CUDA_Kernel =
 264       --  Last_CUDA_Kernel + 1.
 265
 266       First_Interrupt_State : Interrupt_State_Id;
 267       Last_Interrupt_State  : Interrupt_State_Id'Base;
 268       --  These point to the first and last entries in the interrupt state
 269       --  table for this unit. If no entries, then Last_Interrupt_State =
 270       --  First_Interrupt_State - 1 (that's why the 'Base reference is there,
 271       --  it can be one less than the lower bound of the subtype). Not set if
 272       --  'I' appears in Ignore_Lines
 273
 274       First_Specific_Dispatching : Priority_Specific_Dispatching_Id;
 275       Last_Specific_Dispatching  : Priority_Specific_Dispatching_Id'Base;
 276       --  These point to the first and last entries in the priority specific
 277       --  dispatching table for this unit. If there are no entries, then
 278       --  Last_Specific_Dispatching = First_Specific_Dispatching - 1. That
 279       --  is why the 'Base reference is there, it can be one less than the
 280       --  lower bound of the subtype. Not set if 'S' appears in Ignore_Lines.
 281
 282       Invocation_Graph_Encoding : Invocation_Graph_Encoding_Kind;
 283       --  The encoding format used to capture information about the invocation
 284       --  constructs and relations within the corresponding ALI file of this
 285       --  unit.
 286    end record;
 287
 288    No_Main_Priority : constant Int := -1;
 289    --  Code for no main priority set
 290
 291    No_Main_CPU : constant Int := -1;
 292    --  Code for no main cpu set
 293
 294    package ALIs is new Table.Table (
 295      Table_Component_Type => ALIs_Record,
 296      Table_Index_Type     => ALI_Id,
 297      Table_Low_Bound      => First_ALI_Entry,
 298      Table_Initial        => 500,
 299      Table_Increment      => 200,
 300      Table_Name           => "ALIs");
 301
 302    ---------------------------
 303    -- CUDA Kernels Table --
 304    ---------------------------
 305
 306    --  An entry is made in this table for each K (CUDA Kernel) line
 307    --  encountered in the input ALI file. The First/Last_CUDA_Kernel_Id
 308    --  fields of the ALI file entry show the range of entries defined
 309    --  within a particular ALI file.
 310
 311    type CUDA_Kernel_Record is record
 312       Kernel_Name : Name_Id;
 313    end record;
 314
 315    package CUDA_Kernels is new Table.Table (
 316      Table_Component_Type => CUDA_Kernel_Record,
 317      Table_Index_Type     => CUDA_Kernel_Id'Base,
 318      Table_Low_Bound      => CUDA_Kernel_Id'First,
 319      Table_Initial        => 100,
 320      Table_Increment      => 200,
 321      Table_Name           => "Cuda_Kernels");
 322
 323    ----------------
 324    -- Unit Table --
 325    ----------------
 326
 327    --  Each unit within an ALI file generates an entry in the unit table
 328
 329    No_Unit_Id : constant Unit_Id := Unit_Id'First;
 330    --  Special value indicating no unit table entry
 331
 332    First_Unit_Entry : constant Unit_Id := No_Unit_Id + 1;
 333    --  Id of first actual entry in table
 334
 335    type Unit_Type is (Is_Spec, Is_Body, Is_Spec_Only, Is_Body_Only);
 336    --  Indicates type of entry, if both body and spec appear in the ALI file,
 337    --  then the first unit is marked Is_Body, and the second is marked Is_Spec.
 338    --  If only a spec appears, then it is marked as Is_Spec_Only, and if only
 339    --  a body appears, then it is marked Is_Body_Only).
 340
 341    subtype Version_String is String (1 .. 8);
 342    --  Version string, taken from unit record
 343
 344    type Unit_Record is record
 345       My_ALI : ALI_Id;
 346       --  Corresponding ALI entry
 347
 348       Uname : Unit_Name_Type;
 349       --  Name of Unit
 350
 351       Sfile : File_Name_Type;
 352       --  Name of source file
 353
 354       Preelab : Boolean;
 355       --  Indicates presence of PR parameter for a preelaborated package
 356
 357       No_Elab : Boolean;
 358       --  Indicates presence of NE parameter for a unit that has does not
 359       --  have an elaboration routine (since it has no elaboration code).
 360
 361       Pure : Boolean;
 362       --  Indicates presence of PU parameter for a package having pragma Pure
 363
 364       Dynamic_Elab : Boolean;
 365       --  Set to True if the unit was compiled with dynamic elaboration checks
 366       --  (i.e. either -gnatE or pragma Elaboration_Checks (RM) was used to
 367       --  compile the unit).
 368
 369       Elaborate_Body : Boolean;
 370       --  Indicates presence of EB parameter for a package which has a pragma
 371       --  Elaborate_Body, and also for generic package instantiations.
 372
 373       Set_Elab_Entity : Boolean;
 374       --  Indicates presence of EE parameter for a unit which has an
 375       --  elaboration entity which must be set true as part of the
 376       --  elaboration of the unit.
 377
 378       Has_RACW : Boolean;
 379       --  Indicates presence of RA parameter for a package that declares at
 380       --  least one Remote Access to Class_Wide (RACW) object.
 381
 382       Remote_Types : Boolean;
 383       --  Indicates presence of RT parameter for a package which has a
 384       --  pragma Remote_Types.
 385
 386       Serious_Errors : Boolean;
 387       --  Indicates presence of SE parameter indicating that compilation of
 388       --  the unit encountered as serious error.
 389
 390       Shared_Passive : Boolean;
 391       --  Indicates presence of SP parameter for a package which has a pragma
 392       --  Shared_Passive.
 393
 394       RCI : Boolean;
 395       --  Indicates presence of RC parameter for a package which has a pragma
 396       --  Remote_Call_Interface.
 397
 398       Predefined : Boolean;
 399       --  Indicates if unit is language predefined (or a child of such a unit)
 400
 401       Internal : Boolean;
 402       --  Indicates if unit is an internal unit (or a child of such a unit)
 403
 404       First_With : With_Id;
 405       --  Id of first withs table entry for this file
 406
 407       Last_With : With_Id;
 408       --  Id of last withs table entry for this file
 409
 410       First_Arg : Arg_Id;
 411       --  Id of first args table entry for this file
 412
 413       Last_Arg : Arg_Id;
 414       --  Id of last args table entry for this file
 415
 416       First_Invocation_Construct : Invocation_Construct_Id;
 417       --  Id of the first invocation construct for this unit
 418
 419       Last_Invocation_Construct : Invocation_Construct_Id;
 420       --  Id of the last invocation construct for this unit
 421
 422       First_Invocation_Relation : Invocation_Relation_Id;
 423       --  Id of the first invocation relation for this unit
 424
 425       Last_Invocation_Relation : Invocation_Relation_Id;
 426       --  Id of the last invocation relation for this unit
 427
 428       Utype : Unit_Type;
 429       --  Type of entry
 430
 431       Is_Generic : Boolean;
 432       --  True for generic unit (i.e. a generic declaration, or a generic
 433       --  body). False for a non-generic unit.
 434
 435       Unit_Kind : Character;
 436       --  Indicates the nature of the unit. 'p' for Packages and 's' for
 437       --  subprograms.
 438
 439       Version : Version_String;
 440       --  Version of unit
 441
 442       Icasing : Casing_Type;
 443       --  Indicates casing of identifiers in source file for this unit. This
 444       --  is used for informational output, and also for constructing the main
 445       --  unit if it is being built in Ada.
 446
 447       Kcasing : Casing_Type;
 448       --  Indicates casing of keywords in source file for this unit. This is
 449       --  used for informational output, and also for constructing the main
 450       --  unit if it is being built in Ada.
 451
 452       Elab_Position : Nat;
 453       --  Initialized to zero. Set non-zero when a unit is chosen and
 454       --  placed in the elaboration order. The value represents the
 455       --  ordinal position in the elaboration order.
 456
 457       Init_Scalars : Boolean;
 458       --  Set True if IS qualifier appears in ALI file, indicating that
 459       --  an Initialize_Scalars pragma applies to the unit.
 460
 461       SAL_Interface : Boolean;
 462       --  Set True when this is an interface to a standalone library
 463
 464       Directly_Scanned : Boolean;
 465       --  True iff it is a unit from an ALI file specified to gnatbind
 466
 467       Body_Needed_For_SAL : Boolean;
 468       --  Indicates that the source for the body of the unit (subprogram,
 469       --  package, or generic unit) must be included in a standalone library.
 470
 471       Elaborate_Body_Desirable : Boolean;
 472       --  Indicates that the front end elaboration circuitry decided that it
 473       --  would be a good idea if this package had Elaborate_Body. The binder
 474       --  will attempt, but does not promise, to place the elaboration call
 475       --  for the body right after the call for the spec, or at least as close
 476       --  together as possible.
 477
 478       Optimize_Alignment : Character;
 479       --  Optimize_Alignment setting. Set to L/S/T/O for OL/OS/OT/OO present.
 480
 481       Has_Finalizer : Boolean;
 482       --  Indicates whether a package body or a spec has a library-level
 483       --  finalization routine.
 484
 485       Primary_Stack_Count : Int;
 486       --  Indicates the number of task objects declared in this unit that have
 487       --  default sized primary stacks.
 488
 489       Sec_Stack_Count : Int;
 490       --  Indicates the number of task objects declared in this unit that have
 491       --  default sized secondary stacks.
 492    end record;
 493
 494    package Units is new Table.Table (
 495      Table_Component_Type => Unit_Record,
 496      Table_Index_Type     => Unit_Id,
 497      Table_Low_Bound      => First_Unit_Entry,
 498      Table_Initial        => 100,
 499      Table_Increment      => 200,
 500      Table_Name           => "Unit");
 501
 502    package Unit_Id_Tables is new GNAT.Dynamic_Tables
 503      (Table_Component_Type => Unit_Id,
 504       Table_Index_Type     => Nat,
 505       Table_Low_Bound      => 1,
 506       Table_Initial        => 500,
 507       Table_Increment      => 200);
 508
 509    subtype Unit_Id_Table is Unit_Id_Tables.Instance;
 510    subtype Unit_Id_Array is Unit_Id_Tables.Table_Type;
 511
 512    ---------------------------
 513    -- Interrupt State Table --
 514    ---------------------------
 515
 516    --  An entry is made in this table for each I (interrupt state) line
 517    --  encountered in the input ALI file. The First/Last_Interrupt_Id
 518    --  fields of the ALI file entry show the range of entries defined
 519    --  within a particular ALI file.
 520
 521    type Interrupt_State_Record is record
 522       Interrupt_Id : Nat;
 523       --  Id from interrupt state entry
 524
 525       Interrupt_State : Character;
 526       --  State from interrupt state entry ('u'/'r'/'s')
 527
 528       IS_Pragma_Line : Nat;
 529       --  Line number of Interrupt_State pragma
 530    end record;
 531
 532    package Interrupt_States is new Table.Table (
 533      Table_Component_Type => Interrupt_State_Record,
 534      Table_Index_Type     => Interrupt_State_Id'Base,
 535      Table_Low_Bound      => Interrupt_State_Id'First,
 536      Table_Initial        => 100,
 537      Table_Increment      => 200,
 538      Table_Name           => "Interrupt_States");
 539
 540    -----------------------------------------
 541    -- Priority Specific Dispatching Table --
 542    -----------------------------------------
 543
 544    --  An entry is made in this table for each S (priority specific
 545    --  dispatching) line encountered in the input ALI file. The
 546    --  First/Last_Specific_Dispatching_Id fields of the ALI file
 547    --  entry show the range of entries defined within a particular
 548    --  ALI file.
 549
 550    type Specific_Dispatching_Record is record
 551       Dispatching_Policy : Character;
 552       --  First character (upper case) of the corresponding policy name
 553
 554       First_Priority     : Nat;
 555       --  Lower bound of the priority range to which the specified dispatching
 556       --  policy applies.
 557
 558       Last_Priority      : Nat;
 559       --  Upper bound of the priority range to which the specified dispatching
 560       --  policy applies.
 561
 562       PSD_Pragma_Line : Nat;
 563       --  Line number of Priority_Specific_Dispatching pragma
 564    end record;
 565
 566    package Specific_Dispatching is new Table.Table (
 567      Table_Component_Type => Specific_Dispatching_Record,
 568      Table_Index_Type     => Priority_Specific_Dispatching_Id'Base,
 569      Table_Low_Bound      => Priority_Specific_Dispatching_Id'First,
 570      Table_Initial        => 100,
 571      Table_Increment      => 200,
 572      Table_Name           => "Priority_Specific_Dispatching");
 573
 574    --------------
 575    -- Switches --
 576    --------------
 577
 578    --  These switches record status information about ali files that
 579    --  have been read, for quick reference without searching tables.
 580
 581    --  Note: a switch will be left set at its default value if the line
 582    --  which might otherwise set it is ignored (from Ignore_Lines).
 583
 584    Dynamic_Elaboration_Checks_Specified : Boolean := False;
 585    --  Set to False by Initialize_ALI. Set to True if Scan_ALI reads
 586    --  a unit for which dynamic elaboration checking is enabled.
 587
 588    GNATprove_Mode_Specified : Boolean := False;
 589    --  Set to True if an ali file was produced in GNATprove mode.
 590
 591    Initialize_Scalars_Used : Boolean := False;
 592    --  Set True if an ali file contains the Initialize_Scalars flag
 593
 594    Locking_Policy_Specified : Character := ' ';
 595    --  Set to blank by Initialize_ALI. Set to the appropriate locking policy
 596    --  character if an ali file contains a P line setting the locking policy.
 597
 598    No_Normalize_Scalars_Specified : Boolean := False;
 599    --  Set to False by Initialize_ALI. Set to True if an ali file indicates
 600    --  that the file was compiled without normalize scalars.
 601
 602    No_Component_Reordering_Specified : Boolean := False;
 603    --  Set to False by Initialize_ALI. Set to True if an ali file contains
 604    --  the No_Component_Reordering flag.
 605
 606    No_Object_Specified : Boolean := False;
 607    --  Set to False by Initialize_ALI. Set to True if an ali file contains
 608    --  the No_Object flag.
 609
 610    Normalize_Scalars_Specified : Boolean := False;
 611    --  Set to False by Initialize_ALI. Set to True if an ali file indicates
 612    --  that the file was compiled in Normalize_Scalars mode.
 613
 614    Partition_Elaboration_Policy_Specified : Character := ' ';
 615    --  Set to blank by Initialize_ALI. Set to the appropriate partition
 616    --  elaboration policy character if an ali file contains a P line setting
 617    --  the policy.
 618
 619    Queuing_Policy_Specified : Character := ' ';
 620    --  Set to blank by Initialize_ALI. Set to the appropriate queuing policy
 621    --  character if an ali file contains a P line setting the queuing policy.
 622
 623    Cumulative_Restrictions : Restrictions_Info := No_Restrictions;
 624    --  This variable records the cumulative contributions of R lines in all
 625    --  ali files, showing whether a restriction pragma exists anywhere, and
 626    --  accumulating the aggregate knowledge of violations.
 627
 628    SSO_Default_Specified : Boolean := False;
 629    --  Set to True if at least one ALI file contains an OH/OL flag indicating
 630    --  that it was compiled with a configuration pragmas file containing the
 631    --  pragma Default_Scalar_Storage_Order (OH/OL present in ALI file P line).
 632
 633    Stack_Check_Switch_Set : Boolean := False;
 634    --  Set to True if at least one ALI file contains '-fstack-check' in its
 635    --  argument list.
 636
 637    Task_Dispatching_Policy_Specified : Character := ' ';
 638    --  Set to blank by Initialize_ALI. Set to the appropriate task dispatching
 639    --  policy character if an ali file contains a P line setting the
 640    --  task dispatching policy.
 641
 642    Unreserve_All_Interrupts_Specified : Boolean := False;
 643    --  Set to False by Initialize_ALI. Set to True if an ali file is read that
 644    --  has  P line specifying unreserve all interrupts mode.
 645
 646    Zero_Cost_Exceptions_Specified : Boolean := False;
 647    --  Set to False by Initialize_ALI. Set to True if an ali file is read that
 648    --  has a P line specifying the generation of zero cost exceptions.
 649
 650    -----------------
 651    -- Withs Table --
 652    -----------------
 653
 654    --  Each With line (W line) in an ALI file generates a Withs table entry
 655
 656    --  Note: there will be no entries in this table if 'W' lines are ignored
 657
 658    No_With_Id : constant With_Id := With_Id'First;
 659    --  Special value indicating no withs table entry
 660
 661    First_With_Entry : constant With_Id := No_With_Id + 1;
 662    --  Id of first actual entry in table
 663
 664    type With_Record is record
 665       Uname : Unit_Name_Type;
 666       --  Name of Unit
 667
 668       Sfile : File_Name_Type;
 669       --  Name of source file, set to No_File in generic case
 670
 671       Afile : File_Name_Type;
 672       --  Name of ALI file, set to No_File in generic case
 673
 674       Elaborate : Boolean;
 675       --  Indicates presence of E parameter
 676
 677       Elaborate_All : Boolean;
 678       --  Indicates presence of EA parameter
 679
 680       Elab_All_Desirable : Boolean;
 681       --  Indicates presence of AD parameter
 682
 683       Elab_Desirable : Boolean;
 684       --  Indicates presence of ED parameter
 685
 686       SAL_Interface : Boolean := False;
 687       --  True if the Unit is an Interface of a Stand-Alone Library
 688
 689       Implicit_With : Boolean := False;
 690       --  True if this is an implicit with generated by the compiler
 691
 692       Limited_With : Boolean := False;
 693       --  True if this is a limited_with_clause
 694    end record;
 695
 696    package Withs is new Table.Table (
 697      Table_Component_Type => With_Record,
 698      Table_Index_Type     => With_Id,
 699      Table_Low_Bound      => First_With_Entry,
 700      Table_Initial        => 5000,
 701      Table_Increment      => 200,
 702      Table_Name           => "Withs");
 703
 704    ---------------------
 705    -- Arguments Table --
 706    ---------------------
 707
 708    --  Each Arg line (A line) in an ALI file generates an Args table entry
 709
 710    --  Note: there will be no entries in this table if 'A' lines are ignored
 711
 712    No_Arg_Id : constant Arg_Id := Arg_Id'First;
 713    --  Special value indicating no args table entry
 714
 715    First_Arg_Entry : constant Arg_Id := No_Arg_Id + 1;
 716    --  Id of first actual entry in table
 717
 718    package Args is new Table.Table (
 719      Table_Component_Type => String_Ptr,
 720      Table_Index_Type     => Arg_Id,
 721      Table_Low_Bound      => First_Arg_Entry,
 722      Table_Initial        => 1000,
 723      Table_Increment      => 100,
 724      Table_Name           => "Args");
 725
 726    --------------------------
 727    -- Linker_Options Table --
 728    --------------------------
 729
 730    --  If an ALI file has one of more Linker_Options lines, then a single
 731    --  entry is made in this table. If more than one Linker_Options lines
 732    --  appears in a given ALI file, then the arguments are concatenated
 733    --  to form the entry in this table, using a NUL character as the
 734    --  separator, and a final NUL character is appended to the end.
 735
 736    --  Note: there will be no entries in this table if 'L' lines are ignored
 737
 738    type Linker_Option_Record is record
 739       Name : Name_Id;
 740       --  Name entry containing concatenated list of Linker_Options
 741       --  arguments separated by NUL and ended by NUL as described above.
 742
 743       Unit : Unit_Id;
 744       --  Unit_Id for the entry
 745
 746       Internal_File : Boolean;
 747       --  Set True if the linker options are from an internal file. This is
 748       --  used to insert certain standard entries after all the user entries
 749       --  but before the entries from the run-time.
 750    end record;
 751
 752    --  The indexes of active entries in this table range from 1 to the value of
 753    --  Linker_Options.Last. The zeroth element is for convenience if the table
 754    --  needs to be sorted.
 755
 756    package Linker_Options is new Table.Table (
 757      Table_Component_Type => Linker_Option_Record,
 758      Table_Index_Type     => Integer,
 759      Table_Low_Bound      => 0,
 760      Table_Initial        => 200,
 761      Table_Increment      => 400,
 762      Table_Name           => "Linker_Options");
 763
 764    -----------------
 765    -- Notes Table --
 766    -----------------
 767
 768    --  The notes table records entries from N lines
 769
 770    type Notes_Record is record
 771       Pragma_Type : Character;
 772       --  'A', 'C', 'I', 'S', 'T' for Annotate/Comment/Ident/Subtitle/Title
 773
 774       Pragma_Line : Nat;
 775       --  Line number of pragma
 776
 777       Pragma_Col : Nat;
 778       --  Column number of pragma
 779
 780       Pragma_Source_File : File_Name_Type;
 781       --  Source file of pragma
 782
 783       Pragma_Args : Name_Id;
 784       --  Pragma arguments. No_Name if no arguments, otherwise a single
 785       --  name table entry consisting of all the characters on the notes
 786       --  line from the first non-blank character following the source
 787       --  location to the last character on the line.
 788    end record;
 789
 790    --  The indexes of active entries in this table range from 1 to the value of
 791    --  Notes.Last. The zeroth element is for convenience if the table needs to
 792    --  be sorted.
 793
 794    package Notes is new Table.Table (
 795      Table_Component_Type => Notes_Record,
 796      Table_Index_Type     => Integer,
 797      Table_Low_Bound      => 0,
 798      Table_Initial        => 200,
 799      Table_Increment      => 400,
 800      Table_Name           => "Notes");
 801
 802    -------------------------------------------
 803    -- External Version Reference Hash Table --
 804    -------------------------------------------
 805
 806    --  This hash table keeps track of external version reference strings
 807    --  as read from E lines in the ali file. The stored values do not
 808    --  include the terminating quote characters.
 809
 810    --  Note: there will be no entries in this table if 'E' lines are ignored
 811
 812    type Vindex is range 0 .. 98;
 813    --  Type to define range of headers
 814
 815    function SHash (S : String_Ptr) return Vindex;
 816    --  Hash function for this table
 817
 818    function SEq (F1, F2 : String_Ptr) return Boolean;
 819    --  Equality function for this table
 820
 821    package Version_Ref is new Simple_HTable (
 822      Header_Num => Vindex,
 823      Element    => Boolean,
 824      No_Element => False,
 825      Key        => String_Ptr,
 826      Hash       => SHash,
 827      Equal      => SEq);
 828
 829    -------------------------
 830    -- No_Dependency Table --
 831    -------------------------
 832
 833    --  Each R line for a No_Dependency Restriction generates an entry in
 834    --  this No_Dependency table.
 835
 836    type No_Dep_Record is record
 837       ALI_File : ALI_Id;
 838       --  ALI File containing the entry
 839
 840       No_Dep_Unit : Name_Id;
 841       --  Id for names table entry including entire name, including periods
 842    end record;
 843
 844    package No_Deps is new Table.Table (
 845      Table_Component_Type => No_Dep_Record,
 846      Table_Index_Type     => Integer,
 847      Table_Low_Bound      => 0,
 848      Table_Initial        => 200,
 849      Table_Increment      => 400,
 850      Table_Name           => "No_Deps");
 851
 852    ------------------------------------
 853    -- Sdep (Source Dependency) Table --
 854    ------------------------------------
 855
 856    --  Each source dependency (D line) in an ALI file generates an entry in the
 857    --  Sdep table.
 858
 859    --  Note: there will be no entries in this table if 'D' lines are ignored
 860
 861    No_Sdep_Id : constant Sdep_Id := Sdep_Id'First;
 862    --  Special value indicating no Sdep table entry
 863
 864    First_Sdep_Entry : Sdep_Id := No_Sdep_Id + 1;
 865    --  Id of first Sdep entry for current ali file. This is initialized to the
 866    --  first Sdep entry in the table, and then incremented appropriately as
 867    --  successive ALI files are scanned.
 868
 869    type Sdep_Record is record
 870       Sfile : File_Name_Type;
 871       --  Name of source file
 872
 873       Stamp : Time_Stamp_Type;
 874       --  Time stamp value. Note that this will be all zero characters for the
 875       --  dummy entries for missing or non-dependent files.
 876
 877       Checksum : Word;
 878       --  Checksum value. Note that this will be all zero characters for the
 879       --  dummy entries for missing or non-dependent files
 880
 881       Dummy_Entry : Boolean;
 882       --  Set True for dummy entries that correspond to missing files or files
 883       --  where no dependency relationship exists.
 884
 885       Subunit_Name : Name_Id;
 886       --  Name_Id for subunit name if present, else No_Name
 887
 888       Unit_Name : Name_Id;
 889       --  Name_Id for the unit name if not a subunit (No_Name for a subunit)
 890
 891       Rfile : File_Name_Type;
 892       --  Reference file name. Same as Sfile unless a Source_Reference pragma
 893       --  was used, in which case it reflects the name used in the pragma.
 894
 895       Start_Line : Nat;
 896       --  Starting line number in file. Always 1, unless a Source_Reference
 897       --  pragma was used, in which case it reflects the line number value
 898       --  given in the pragma.
 899
 900    end record;
 901
 902    package Sdep is new Table.Table (
 903      Table_Component_Type => Sdep_Record,
 904      Table_Index_Type     => Sdep_Id,
 905      Table_Low_Bound      => First_Sdep_Entry,
 906      Table_Initial        => 5000,
 907      Table_Increment      => 200,
 908      Table_Name           => "Sdep");
 909
 910    ----------------------------
 911    -- Use of Name Table Info --
 912    ----------------------------
 913
 914    --  All unit names and file names are entered into the Names table. The Info
 915    --  fields of these entries are used as follows:
 916
 917    --    Unit name           Info field has Unit_Id of unit table entry
 918    --    ALI file name       Info field has ALI_Id of ALI table entry
 919    --    Source file name    Info field has Source_Id of source table entry
 920
 921    --------------------------
 922    -- Cross-Reference Data --
 923    --------------------------
 924
 925    --  The following table records cross-reference sections, there is one entry
 926    --  for each X header line in the ALI file for an xref section.
 927
 928    --  Note: there will be no entries in this table if 'X' lines are ignored
 929
 930    type Xref_Section_Record is record
 931       File_Num : Sdep_Id;
 932       --  Dependency number for file (entry in Sdep.Table)
 933
 934       File_Name : File_Name_Type;
 935       --  Name of file
 936
 937       First_Entity : Nat;
 938       --  First entry in Xref_Entity table
 939
 940       Last_Entity : Nat;
 941       --  Last entry in Xref_Entity table
 942    end record;
 943
 944    package Xref_Section is new Table.Table (
 945      Table_Component_Type => Xref_Section_Record,
 946      Table_Index_Type     => Nat,
 947      Table_Low_Bound      => 1,
 948      Table_Initial        => 50,
 949      Table_Increment      => 300,
 950      Table_Name           => "Xref_Section");
 951
 952    --  The following is used to indicate whether a typeref field is present
 953    --  for the entity, and if so what kind of typeref field.
 954
 955    type Tref_Kind is (
 956      Tref_None,    --  No typeref present
 957      Tref_Access,  --  Access type typeref (points to designated type)
 958      Tref_Derived, --  Derived type typeref (points to parent type)
 959      Tref_Type);   --  All other cases
 960
 961    type Visibility_Kind is
 962      (Global, --  Library level entity
 963       Static, --  Static C/C++ entity
 964       Other); --  Local and other entity
 965
 966    --  The following table records entities for which xrefs are recorded
 967
 968    type Xref_Entity_Record is record
 969       Line : Pos;
 970       --  Line number of definition
 971
 972       Etype : Character;
 973       --  Set to the identification character for the entity. See section
 974       --  "Cross-Reference Entity Identifiers" in lib-xref.ads for details.
 975
 976       Col : Pos;
 977       --  Column number of definition
 978
 979       Visibility : Visibility_Kind;
 980       --  Visibility of entity
 981
 982       Entity : Name_Id;
 983       --  Name of entity
 984
 985       Iref_File_Num : Sdep_Id;
 986       --  This field is set to the dependency reference for the file containing
 987       --  the generic entity that this one instantiates, or to No_Sdep_Id if
 988       --  the current entity is not an instantiation
 989
 990       Iref_Line : Nat;
 991       --  This field is set to the line number in Iref_File_Num of the generic
 992       --  entity that this one instantiates, or to zero if the current entity
 993       --  is not an instantiation.
 994
 995       Rref_Line : Nat;
 996       --  This field is set to the line number of a renaming reference if
 997       --  one is present, or to zero if no renaming reference is present
 998
 999       Rref_Col : Nat;
1000       --  This field is set to the column number of a renaming reference
1001       --  if one is present, or to zero if no renaming reference is present.
1002
1003       Tref : Tref_Kind;
1004       --  Indicates if a typeref is present, and if so what kind. Set to
1005       --  Tref_None if no typeref field is present.
1006
1007       Tref_File_Num : Sdep_Id;
1008       --  This field is set to No_Sdep_Id if no typeref is present, or
1009       --  if the typeref refers to an entity in standard. Otherwise it
1010       --  it is the dependency reference for the file containing the
1011       --  declaration of the typeref entity.
1012
1013       Tref_Line : Nat;
1014       --  This field is set to zero if no typeref is present, or if the
1015       --  typeref refers to an entity in standard. Otherwise it contains
1016       --  the line number of the declaration of the typeref entity.
1017
1018       Tref_Type : Character;
1019       --  This field is set to blank if no typeref is present, or if the
1020       --  typeref refers to an entity in standard. Otherwise it contains
1021       --  the identification character for the typeref entity. See section
1022       --  "Cross-Reference Entity Identifiers" in lib-xref.ads for details.
1023
1024       Tref_Col : Nat;
1025       --  This field is set to zero if no typeref is present, or if the
1026       --  typeref refers to an entity in standard. Otherwise it contains
1027       --  the column number of the declaration of the parent type.
1028
1029       Tref_Standard_Entity : Name_Id;
1030       --  This field is set to No_Name if no typeref is present or if the
1031       --  typeref refers to a declared entity rather than an entity in
1032       --  package Standard. If there is a typeref that references an
1033       --  entity in package Standard, then this field is a Name_Id
1034       --  reference for the entity name.
1035
1036       Oref_File_Num : Sdep_Id;
1037       --  This field is set to No_Sdep_Id if the entity doesn't override any
1038       --  other entity, or to the dependency reference for the overridden
1039       --  entity.
1040
1041       Oref_Line : Nat;
1042       Oref_Col  : Nat;
1043       --  These two fields are set to the line and column of the overridden
1044       --  entity.
1045
1046       First_Xref : Nat;
1047       --  Index into Xref table of first cross-reference
1048
1049       Last_Xref : Nat;
1050       --  Index into Xref table of last cross-reference. The value in
1051       --  Last_Xref can be less than the First_Xref value to indicate
1052       --  that no entries are present in the Xref Table.
1053    end record;
1054
1055    package Xref_Entity is new Table.Table (
1056      Table_Component_Type => Xref_Entity_Record,
1057      Table_Index_Type     => Nat,
1058      Table_Low_Bound      => 1,
1059      Table_Initial        => 500,
1060      Table_Increment      => 300,
1061      Table_Name           => "Xref_Entity");
1062
1063    Array_Index_Reference : constant Character := '*';
1064    Interface_Reference   : constant Character := 'I';
1065    --  Some special types of references. In the ALI file itself, these
1066    --  are output as attributes of the entity, not as references, but
1067    --  there is no provision in Xref_Entity_Record for storing multiple
1068    --  such references.
1069
1070    --  The following table records actual cross-references
1071
1072    type Xref_Record is record
1073       File_Num : Sdep_Id;
1074       --  Set to the file dependency number for the cross-reference. Note
1075       --  that if no file entry is present explicitly, this is just a copy
1076       --  of the reference for the current cross-reference section.
1077
1078       Line : Nat;
1079       --  Line number for the reference. This is zero when referencing a
1080       --  predefined entity, but in this case Name is set.
1081
1082       Rtype : Character;
1083       --  Indicates type of reference, using code used in ALI file:
1084       --    r = reference
1085       --    m = modification
1086       --    b = body entity
1087       --    c = completion of private or incomplete type
1088       --    x = type extension
1089       --    i = implicit reference
1090       --    Array_Index_Reference = reference to the index of an array
1091       --    Interface_Reference   = reference to an interface implemented
1092       --                            by the type
1093       --  See description in lib-xref.ads for further details
1094
1095       Col : Nat;
1096       --  Column number for the reference
1097
1098       Name : Name_Id := No_Name;
1099       --  This is only used when referencing a predefined entity. Currently,
1100       --  this only occurs for array indexes.
1101
1102       --  Note: for instantiation references, Rtype is set to ' ', and Col is
1103       --  set to zero. One or more such entries can follow any other reference.
1104       --  When there is more than one such entry, this is to be read as:
1105       --     e.g. ref1  ref2  ref3
1106       --     ref1 is a reference to an entity that was instantied at ref2.
1107       --     ref2 itself is also the result of an instantiation, that took
1108       --     place at ref3
1109
1110       Imported_Lang : Name_Id := No_Name;
1111       Imported_Name : Name_Id := No_Name;
1112       --  Language and name of imported entity reference
1113    end record;
1114
1115    package Xref is new Table.Table (
1116      Table_Component_Type => Xref_Record,
1117      Table_Index_Type     => Nat,
1118      Table_Low_Bound      => 1,
1119      Table_Initial        => 2000,
1120      Table_Increment      => 300,
1121      Table_Name           => "Xref");
1122
1123    ----------------------------
1124    -- Invocation Graph Types --
1125    ----------------------------
1126
1127    --  The following type identifies an invocation construct
1128
1129    No_Invocation_Construct    : constant Invocation_Construct_Id :=
1130                                   Invocation_Construct_Id'First;
1131    First_Invocation_Construct : constant Invocation_Construct_Id :=
1132                                   No_Invocation_Construct + 1;
1133
1134    --  The following type identifies an invocation relation
1135
1136    No_Invocation_Relation    : constant Invocation_Relation_Id :=
1137                                  Invocation_Relation_Id'First;
1138    First_Invocation_Relation : constant Invocation_Relation_Id :=
1139                                  No_Invocation_Relation + 1;
1140
1141    --  The following type identifies an invocation signature
1142
1143    No_Invocation_Signature    : constant Invocation_Signature_Id :=
1144                                   Invocation_Signature_Id'First;
1145    First_Invocation_Signature : constant Invocation_Signature_Id :=
1146                                   No_Invocation_Signature + 1;
1147
1148    --  The following type enumerates all possible placements of an invocation
1149    --  construct's spec and body with respect to the unit it is declared in.
1150
1151    type Declaration_Placement_Kind is
1152      (In_Body,
1153       --  The declaration of the invocation construct is within the body of the
1154       --  unit it is declared in.
1155
1156       In_Spec,
1157       --  The declaration of the invocation construct is within the spec of the
1158       --  unit it is declared in.
1159
1160       No_Declaration_Placement);
1161       --  The invocation construct does not have a declaration
1162
1163    --  The following type enumerates all possible invocation construct kinds
1164
1165    type Invocation_Construct_Kind is
1166      (Elaborate_Body_Procedure,
1167       --  The invocation construct denotes the procedure which elaborates a
1168       --  package body.
1169
1170       Elaborate_Spec_Procedure,
1171       --  The invocation construct denotes the procedure which elaborates a
1172       --  package spec.
1173
1174       Regular_Construct);
1175       --  The invocation construct is a normal invocation construct
1176
1177    --  The following type enumerates all possible invocation kinds
1178
1179    type Invocation_Kind is
1180      (Accept_Alternative,
1181       Access_Taken,
1182       Call,
1183       Controlled_Adjustment,
1184       Controlled_Finalization,
1185       Controlled_Initialization,
1186       Default_Initial_Condition_Verification,
1187       Initial_Condition_Verification,
1188       Instantiation,
1189       Internal_Controlled_Adjustment,
1190       Internal_Controlled_Finalization,
1191       Internal_Controlled_Initialization,
1192       Invariant_Verification,
1193       Postcondition_Verification,
1194       Protected_Entry_Call,
1195       Protected_Subprogram_Call,
1196       Task_Activation,
1197       Task_Entry_Call,
1198       Type_Initialization,
1199       No_Invocation);
1200
1201    subtype Internal_Controlled_Invocation_Kind is Invocation_Kind range
1202        Internal_Controlled_Adjustment ..
1203    --  Internal_Controlled_Finalization
1204        Internal_Controlled_Initialization;
1205
1206    --  The following type enumerates all possible invocation-graph ALI lines
1207
1208    type Invocation_Graph_Line_Kind is
1209      (Invocation_Construct_Line,
1210       Invocation_Graph_Attributes_Line,
1211       Invocation_Relation_Line);
1212
1213    ----------------------------------
1214    -- Invocation Graph Subprograms --
1215    ----------------------------------
1216
1217    procedure Add_Invocation_Construct
1218      (Body_Placement : Declaration_Placement_Kind;
1219       Kind           : Invocation_Construct_Kind;
1220       Signature      : Invocation_Signature_Id;
1221       Spec_Placement : Declaration_Placement_Kind;
1222       Update_Units   : Boolean := True);
1223    pragma Inline (Add_Invocation_Construct);
1224    --  Add a new invocation construct described by its attributes. Update_Units
1225    --  should be set when this addition must be reflected in the attributes of
1226    --  the current unit.
1227
1228    procedure Add_Invocation_Relation
1229      (Extra        : Name_Id;
1230       Invoker      : Invocation_Signature_Id;
1231       Kind         : Invocation_Kind;
1232       Target       : Invocation_Signature_Id;
1233       Update_Units : Boolean := True);
1234    pragma Inline (Add_Invocation_Relation);
1235    --  Add a new invocation relation described by its attributes. Update_Units
1236    --  should be set when this addition must be reflected in the attributes of
1237    --  the current unit.
1238
1239    function Body_Placement
1240      (IC_Id : Invocation_Construct_Id) return Declaration_Placement_Kind;
1241    pragma Inline (Body_Placement);
1242    --  Obtain the location of invocation construct IC_Id's body with respect to
1243    --  the unit where it is declared.
1244
1245    function Code_To_Declaration_Placement_Kind
1246      (Code : Character) return Declaration_Placement_Kind;
1247    pragma Inline (Code_To_Declaration_Placement_Kind);
1248    --  Obtain the declaration placement kind of character encoding Code
1249
1250    function Code_To_Invocation_Construct_Kind
1251      (Code : Character) return Invocation_Construct_Kind;
1252    pragma Inline (Code_To_Invocation_Construct_Kind);
1253    --  Obtain the invocation construct kind of character encoding Code
1254
1255    function Code_To_Invocation_Graph_Encoding_Kind
1256      (Code : Character) return Invocation_Graph_Encoding_Kind;
1257    pragma Inline (Code_To_Invocation_Graph_Encoding_Kind);
1258    --  Obtain the invocation-graph encoding kind of character encoding Code
1259
1260    function Code_To_Invocation_Kind
1261      (Code : Character) return Invocation_Kind;
1262    pragma Inline (Code_To_Invocation_Kind);
1263    --  Obtain the invocation kind of character encoding Code
1264
1265    function Code_To_Invocation_Graph_Line_Kind
1266      (Code : Character) return Invocation_Graph_Line_Kind;
1267    pragma Inline (Code_To_Invocation_Graph_Line_Kind);
1268    --  Obtain the invocation-graph line kind of character encoding Code
1269
1270    function Column (IS_Id : Invocation_Signature_Id) return Nat;
1271    pragma Inline (Column);
1272    --  Obtain the column number of invocation signature IS_Id
1273
1274    function Declaration_Placement_Kind_To_Code
1275      (Kind : Declaration_Placement_Kind) return Character;
1276    pragma Inline (Declaration_Placement_Kind_To_Code);
1277    --  Obtain the character encoding of declaration placement kind Kind
1278
1279    function Extra (IR_Id : Invocation_Relation_Id) return Name_Id;
1280    pragma Inline (Extra);
1281    --  Obtain the name of the additional entity used in error diagnostics for
1282    --  invocation relation IR_Id.
1283
1284    type Invocation_Construct_Processor_Ptr is
1285      access procedure (IC_Id : Invocation_Construct_Id);
1286
1287    procedure For_Each_Invocation_Construct
1288      (Processor : Invocation_Construct_Processor_Ptr);
1289    pragma Inline (For_Each_Invocation_Construct);
1290    --  Invoke Processor on each invocation construct
1291
1292    procedure For_Each_Invocation_Construct
1293      (U_Id      : Unit_Id;
1294       Processor : Invocation_Construct_Processor_Ptr);
1295    pragma Inline (For_Each_Invocation_Construct);
1296    --  Invoke Processor on each invocation construct of unit U_Id
1297
1298    type Invocation_Relation_Processor_Ptr is
1299      access procedure (IR_Id : Invocation_Relation_Id);
1300
1301    procedure For_Each_Invocation_Relation
1302      (Processor : Invocation_Relation_Processor_Ptr);
1303    pragma Inline (For_Each_Invocation_Relation);
1304    --  Invoke Processor on each invocation relation
1305
1306    procedure For_Each_Invocation_Relation
1307      (U_Id      : Unit_Id;
1308       Processor : Invocation_Relation_Processor_Ptr);
1309    pragma Inline (For_Each_Invocation_Relation);
1310    --  Invoke Processor on each invocation relation of unit U_Id
1311
1312    function Invocation_Construct_Kind_To_Code
1313      (Kind : Invocation_Construct_Kind) return Character;
1314    pragma Inline (Invocation_Construct_Kind_To_Code);
1315    --  Obtain the character encoding of invocation kind Kind
1316
1317    function Invocation_Graph_Encoding return Invocation_Graph_Encoding_Kind;
1318    pragma Inline (Invocation_Graph_Encoding);
1319    --  Obtain the encoding format used to capture information about the
1320    --  invocation constructs and relations within the ALI file of the main
1321    --  unit.
1322
1323    function Invocation_Graph_Encoding_Kind_To_Code
1324      (Kind : Invocation_Graph_Encoding_Kind) return Character;
1325    pragma Inline (Invocation_Graph_Encoding_Kind_To_Code);
1326    --  Obtain the character encoding for invocation-graph encoding kind Kind
1327
1328    function Invocation_Graph_Line_Kind_To_Code
1329      (Kind : Invocation_Graph_Line_Kind) return Character;
1330    pragma Inline (Invocation_Graph_Line_Kind_To_Code);
1331    --  Obtain the character encoding for invocation line kind Kind
1332
1333    function Invocation_Kind_To_Code
1334      (Kind : Invocation_Kind) return Character;
1335    pragma Inline (Invocation_Kind_To_Code);
1336    --  Obtain the character encoding of invocation kind Kind
1337
1338    function Invocation_Signature_Of
1339      (Column    : Nat;
1340       Line      : Nat;
1341       Locations : Name_Id;
1342       Name      : Name_Id;
1343       Scope     : Name_Id) return Invocation_Signature_Id;
1344    pragma Inline (Invocation_Signature_Of);
1345    --  Obtain the invocation signature that corresponds to the input attributes
1346
1347    function Invoker
1348      (IR_Id : Invocation_Relation_Id) return Invocation_Signature_Id;
1349    pragma Inline (Invoker);
1350    --  Obtain the signature of the invocation relation IR_Id's invoker
1351
1352    function Kind
1353      (IC_Id : Invocation_Construct_Id) return Invocation_Construct_Kind;
1354    pragma Inline (Kind);
1355    --  Obtain the nature of invocation construct IC_Id
1356
1357    function Kind
1358      (IR_Id : Invocation_Relation_Id) return Invocation_Kind;
1359    pragma Inline (Kind);
1360    --  Obtain the nature of invocation relation IR_Id
1361
1362    function Line (IS_Id : Invocation_Signature_Id) return Nat;
1363    pragma Inline (Line);
1364    --  Obtain the line number of invocation signature IS_Id
1365
1366    function Locations (IS_Id : Invocation_Signature_Id) return Name_Id;
1367    pragma Inline (Locations);
1368    --  Obtain the sequence of column and line numbers within nested instances
1369    --  of invocation signature IS_Id
1370
1371    function Name (IS_Id : Invocation_Signature_Id) return Name_Id;
1372    pragma Inline (Name);
1373    --  Obtain the name of invocation signature IS_Id
1374
1375    function IS_Scope (IS_Id : Invocation_Signature_Id) return Name_Id;
1376    pragma Inline (IS_Scope);
1377    --  Obtain the scope of invocation signature IS_Id
1378
1379    procedure Set_Invocation_Graph_Encoding
1380      (Kind         : Invocation_Graph_Encoding_Kind;
1381       Update_Units : Boolean := True);
1382    pragma Inline (Set_Invocation_Graph_Encoding);
1383    --  Set the encoding format used to capture information about the invocation
1384    --  constructs and relations within the ALI file of the main unit to Kind.
1385    --  Update_Units should be set when this action must be reflected in the
1386    --  attributes of the current unit.
1387
1388    function Signature
1389      (IC_Id : Invocation_Construct_Id) return Invocation_Signature_Id;
1390    pragma Inline (Signature);
1391    --  Obtain the signature of invocation construct IC_Id
1392
1393    function Spec_Placement
1394      (IC_Id : Invocation_Construct_Id) return Declaration_Placement_Kind;
1395    pragma Inline (Spec_Placement);
1396    --  Obtain the location of invocation construct IC_Id's spec with respect to
1397    --  the unit where it is declared.
1398
1399    function Target
1400      (IR_Id : Invocation_Relation_Id) return Invocation_Signature_Id;
1401    pragma Inline (Target);
1402    --  Obtain the signature of the invocation relation IR_Id's target
1403
1404    --------------------------------------
1405    -- Subprograms for Reading ALI File --
1406    --------------------------------------
1407
1408    procedure Initialize_ALI;
1409    --  Initialize the ALI tables. Also resets all switch values to defaults
1410
1411    function Scan_ALI
1412      (F                : File_Name_Type;
1413       T                : Text_Buffer_Ptr;
1414       Err              : Boolean;
1415       Ignore_Lines     : String  := "X";
1416       Ignore_Errors    : Boolean := False;
1417       Directly_Scanned : Boolean := False) return ALI_Id;
1418    --  Given the text, T, of an ALI file, F, scan and store the information
1419    --  from the file, and return the Id of the resulting entry in the ALI
1420    --  table. Switch settings may be modified as described above in the
1421    --  switch description settings.
1422    --
1423    --    Err determines the action taken on an incorrectly formatted file.
1424    --    If Err is False, then an error message is output, and the program
1425    --    is terminated. If Err is True, then no error message is output,
1426    --    and No_ALI_Id is returned.
1427    --
1428    --    Ignore_Lines requests that Scan_ALI ignore any lines that start
1429    --    with any given key character. The default value of X causes all
1430    --    Xref lines to be ignored. The corresponding data in the ALI
1431    --    tables will not be filled in this case. It is not possible
1432    --    to ignore U (unit) lines, they are always read.
1433    --
1434    --    Ignore_Errors is normally False. If it is set True, then Scan_ALI
1435    --    will do its best to scan through a file and extract all information
1436    --    it can, even if there are errors. In this case Err is only set if
1437    --    Scan_ALI was completely unable to process the file (e.g. it did not
1438    --    look like an ALI file at all). Ignore_Errors is intended to improve
1439    --    the downward compatibility of new compilers with old tools.
1440    --
1441    --    Directly_Scanned is normally False. If it is set to True, then the
1442    --    units (spec and/or body) corresponding to the ALI file are marked as
1443    --    such. It is used to decide for what units gnatbind should generate
1444    --    the symbols corresponding to 'Version or 'Body_Version in
1445    --    Stand-Alone Libraries.
1446
1447 end ALI;