1 ------------------------------------------------------------------------------
3 -- GNAT COMPILER COMPONENTS --
9 -- Copyright (C) 1992-2009, Free Software Foundation, Inc. --
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. --
21 -- GNAT was originally developed by the GNAT team at New York University. --
22 -- Extensive contributions were provided by Ada Core Technologies Inc. --
24 ------------------------------------------------------------------------------
26 -- This package defines the internal data structures used for representation
27 -- of Ada Library Information (ALI) acquired from the ALI files generated
30 with Casing
; use Casing
;
31 with Gnatvsn
; use Gnatvsn
;
32 with Namet
; use Namet
;
33 with Rident
; use Rident
;
35 with Types
; use Types
;
37 with GNAT
.HTable
; use GNAT
.HTable
;
45 -- The various entries are stored in tables with distinct subscript ranges.
46 -- The following type definitions show the ranges used for the subscripts
47 -- (Id values) for the various tables.
49 type ALI_Id
is range 0 .. 999_999
;
50 -- Id values used for ALIs table entries
52 type Unit_Id
is range 1_000_000
.. 1_999_999
;
53 -- Id values used for Unit table entries
55 type With_Id
is range 2_000_000
.. 2_999_999
;
56 -- Id values used for Withs table entries
58 type Arg_Id
is range 3_000_000
.. 3_999_999
;
59 -- Id values used for argument table entries
61 type Sdep_Id
is range 4_000_000
.. 4_999_999
;
62 -- Id values used for Sdep table entries
64 type Source_Id
is range 5_000_000
.. 5_999_999
;
65 -- Id values used for Source table entries
67 type Interrupt_State_Id
is range 6_000_000
.. 6_999_999
;
68 -- Id values used for Interrupt_State table entries
70 type Priority_Specific_Dispatching_Id
is range 7_000_000
.. 7_999_999
;
71 -- Id values used for Priority_Specific_Dispatching table entries
77 -- Each ALI file read generates an entry in the ALIs table
79 No_ALI_Id
: constant ALI_Id
:= ALI_Id
'First;
80 -- Special value indicating no ALI entry
82 First_ALI_Entry
: constant ALI_Id
:= No_ALI_Id
+ 1;
83 -- Id of first actual entry in table
85 type Main_Program_Type
is (None
, Proc
, Func
);
86 -- Indicator of whether unit can be used as main program
88 type ALIs_Record
is record
90 Afile
: File_Name_Type
;
93 Ofile_Full_Name
: File_Name_Type
;
94 -- Full name of object file corresponding to the ALI file
96 Sfile
: File_Name_Type
;
97 -- Name of source file that generates this ALI file (which is equal
98 -- to the name of the source file in the first unit table entry for
99 -- this ALI file, since the body if present is always first).
101 Ver
: String (1 .. Ver_Len_Max
);
102 -- Value of library version (V line in ALI file). Not set if
103 -- V lines are ignored as a result of the Ignore_Lines parameter.
106 -- Length of characters stored in Ver. Not set if V lines are ignored as
107 -- a result of the Ignore_Lines parameter.
109 SAL_Interface
: Boolean;
110 -- Set True when this is an interface to a standalone library
112 First_Unit
: Unit_Id
;
113 -- Id of first Unit table entry for this file
116 -- Id of last Unit table entry for this file
118 First_Sdep
: Sdep_Id
;
119 -- Id of first Sdep table entry for this file
122 -- Id of last Sdep table entry for this file
124 Main_Program
: Main_Program_Type
;
125 -- Indicator of whether first unit can be used as main program. Not set
126 -- if 'M' appears in Ignore_Lines.
129 -- Indicates priority value if Main_Program field indicates that this
130 -- can be a main program. A value of -1 (No_Main_Priority) indicates
131 -- that no parameter was found, or no M line was present. Not set if
132 -- 'M' appears in Ignore_Lines.
134 Time_Slice_Value
: Int
;
135 -- Indicates value of time slice parameter from T=xxx on main program
136 -- line. A value of -1 indicates that no T=xxx parameter was found, or
137 -- no M line was present. Not set if 'M' appears in Ignore_Lines.
139 WC_Encoding
: Character;
140 -- Wide character encoding if main procedure. Otherwise not relevant.
141 -- Not set if 'M' appears in Ignore_Lines.
143 Locking_Policy
: Character;
144 -- Indicates locking policy for units in this file. Space means tasking
145 -- was not used, or that no Locking_Policy pragma was present or that
146 -- this is a language defined unit. Otherwise set to first character
147 -- (upper case) of policy name. Not set if 'P' appears in Ignore_Lines.
149 Queuing_Policy
: Character;
150 -- Indicates queuing policy for units in this file. Space means tasking
151 -- was not used, or that no Queuing_Policy pragma was present or that
152 -- this is a language defined unit. Otherwise set to first character
153 -- (upper case) of policy name. Not set if 'P' appears in Ignore_Lines.
155 Task_Dispatching_Policy
: Character;
156 -- Indicates task dispatching policy for units in this file. Space means
157 -- tasking was not used, or that no Task_Dispatching_Policy pragma was
158 -- present or that this is a language defined unit. Otherwise set to
159 -- first character (upper case) of policy name. Not set if 'P' appears
162 Compile_Errors
: Boolean;
163 -- Set to True if compile errors for unit. Note that No_Object will
164 -- always be set as well in this case. Not set if 'P' appears in
167 Float_Format
: Character;
168 -- Set to float format (set to I if no float-format given). Not set if
169 -- 'P' appears in Ignore_Lines.
172 -- Set to True if no object file generated. Not set if 'P' appears in
175 Normalize_Scalars
: Boolean;
176 -- Set to True if file was compiled with Normalize_Scalars. Not set if
177 -- 'P' appears in Ignore_Lines.
179 Unit_Exception_Table
: Boolean;
180 -- Set to True if unit exception table pointer generated. Not set if 'P'
181 -- appears in Ignore_Lines.
183 Zero_Cost_Exceptions
: Boolean;
184 -- Set to True if file was compiled with zero cost exceptions. Not set
185 -- if 'P' appears in Ignore_Lines.
187 Restrictions
: Restrictions_Info
;
188 -- Restrictions information reconstructed from R lines
190 First_Interrupt_State
: Interrupt_State_Id
;
191 Last_Interrupt_State
: Interrupt_State_Id
'Base;
192 -- These point to the first and last entries in the interrupt state
193 -- table for this unit. If no entries, then Last_Interrupt_State =
194 -- First_Interrupt_State - 1 (that's why the 'Base reference is there,
195 -- it can be one less than the lower bound of the subtype). Not set if
196 -- 'I' appears in Ignore_Lines
198 First_Specific_Dispatching
: Priority_Specific_Dispatching_Id
;
199 Last_Specific_Dispatching
: Priority_Specific_Dispatching_Id
'Base;
200 -- These point to the first and last entries in the priority specific
201 -- dispatching table for this unit. If there are no entries, then
202 -- Last_Specific_Dispatching = First_Specific_Dispatching - 1. That
203 -- is why the 'Base reference is there, it can be one less than the
204 -- lower bound of the subtype. Not set if 'S' appears in Ignore_Lines.
208 No_Main_Priority
: constant Int
:= -1;
209 -- Code for no main priority set
211 package ALIs
is new Table
.Table
(
212 Table_Component_Type
=> ALIs_Record
,
213 Table_Index_Type
=> ALI_Id
,
214 Table_Low_Bound
=> First_ALI_Entry
,
215 Table_Initial
=> 500,
216 Table_Increment
=> 200,
217 Table_Name
=> "ALIs");
223 -- Each unit within an ALI file generates an entry in the unit table
225 No_Unit_Id
: constant Unit_Id
:= Unit_Id
'First;
226 -- Special value indicating no unit table entry
228 First_Unit_Entry
: constant Unit_Id
:= No_Unit_Id
+ 1;
229 -- Id of first actual entry in table
231 type Unit_Type
is (Is_Spec
, Is_Body
, Is_Spec_Only
, Is_Body_Only
);
232 -- Indicates type of entry, if both body and spec appear in the ALI file,
233 -- then the first unit is marked Is_Body, and the second is marked Is_Spec.
234 -- If only a spec appears, then it is marked as Is_Spec_Only, and if only
235 -- a body appears, then it is marked Is_Body_Only).
237 subtype Version_String
is String (1 .. 8);
238 -- Version string, taken from unit record
240 type Unit_Record
is record
243 -- Corresponding ALI entry
245 Uname
: Unit_Name_Type
;
248 Sfile
: File_Name_Type
;
249 -- Name of source file
252 -- Indicates presence of PR parameter for a preelaborated package
255 -- Indicates presence of NE parameter for a unit that has does not
256 -- have an elaboration routine (since it has no elaboration code).
259 -- Indicates presence of PU parameter for a package having pragma Pure
261 Dynamic_Elab
: Boolean;
262 -- Set to True if the unit was compiled with dynamic elaboration checks
263 -- (i.e. either -gnatE or pragma Elaboration_Checks (RM) was used to
264 -- compile the unit).
266 Elaborate_Body
: Boolean;
267 -- Indicates presence of EB parameter for a package which has a pragma
268 -- Elaborate_Body, and also for generic package instantiations.
270 Set_Elab_Entity
: Boolean;
271 -- Indicates presence of EE parameter for a unit which has an
272 -- elaboration entity which must be set true as part of the
273 -- elaboration of the entity.
276 -- Indicates presence of RA parameter for a package that declares at
277 -- least one Remote Access to Class_Wide (RACW) object.
279 Remote_Types
: Boolean;
280 -- Indicates presence of RT parameter for a package which has a
281 -- pragma Remote_Types.
283 Shared_Passive
: Boolean;
284 -- Indicates presence of SP parameter for a package which has a pragma
288 -- Indicates presence of RC parameter for a package which has a pragma
289 -- Remote_Call_Interface.
291 Predefined
: Boolean;
292 -- Indicates if unit is language predefined (or a child of such a unit)
295 -- Indicates if unit is an internal unit (or a child of such a unit)
297 First_With
: With_Id
;
298 -- Id of first withs table entry for this file
301 -- Id of last withs table entry for this file
304 -- Id of first args table entry for this file
307 -- Id of last args table entry for this file
312 Is_Generic
: Boolean;
313 -- True for generic unit (i.e. a generic declaration, or a generic
314 -- body). False for a non-generic unit.
316 Unit_Kind
: Character;
317 -- Indicates the nature of the unit. 'p' for Packages and 's' for
320 Version
: Version_String
;
323 Icasing
: Casing_Type
;
324 -- Indicates casing of identifiers in source file for this unit. This
325 -- is used for informational output, and also for constructing the main
326 -- unit if it is being built in Ada.
328 Kcasing
: Casing_Type
;
329 -- Indicates casing of keywords in source file for this unit. This is
330 -- used for informational output, and also for constructing the main
331 -- unit if it is being built in Ada.
333 Elab_Position
: aliased Natural;
334 -- Initialized to zero. Set non-zero when a unit is chosen and
335 -- placed in the elaboration order. The value represents the
336 -- ordinal position in the elaboration order.
338 Init_Scalars
: Boolean;
339 -- Set True if IS qualifier appears in ALI file, indicating that
340 -- an Initialize_Scalars pragma applies to the unit.
342 SAL_Interface
: Boolean;
343 -- Set True when this is an interface to a standalone library
345 Directly_Scanned
: Boolean;
346 -- True iff it is a unit from an ALI file specified to gnatbind
348 Body_Needed_For_SAL
: Boolean;
349 -- Indicates that the source for the body of the unit (subprogram,
350 -- package, or generic unit) must be included in a standalone library.
352 Elaborate_Body_Desirable
: Boolean;
353 -- Indicates that the front end elaboration circuitry decided that it
354 -- would be a good idea if this package had Elaborate_Body. The binder
355 -- will attempt, but does not promise, to place the elaboration call
356 -- for the body right after the call for the spec, or at least as close
357 -- together as possible.
359 Optimize_Alignment
: Character;
360 -- Optimize_Alignment setting. Set to L/S/T/O for OL/OS/OT/OO present
364 package Units
is new Table
.Table
(
365 Table_Component_Type
=> Unit_Record
,
366 Table_Index_Type
=> Unit_Id
,
367 Table_Low_Bound
=> First_Unit_Entry
,
368 Table_Initial
=> 100,
369 Table_Increment
=> 200,
370 Table_Name
=> "Unit");
372 ---------------------------
373 -- Interrupt State Table --
374 ---------------------------
376 -- An entry is made in this table for each I (interrupt state) line
377 -- encountered in the input ALI file. The First/Last_Interrupt_Id
378 -- fields of the ALI file entry show the range of entries defined
379 -- within a particular ALI file.
381 type Interrupt_State_Record
is record
383 -- Id from interrupt state entry
385 Interrupt_State
: Character;
386 -- State from interrupt state entry ('u'/'r'/'s')
388 IS_Pragma_Line
: Nat
;
389 -- Line number of Interrupt_State pragma
392 package Interrupt_States
is new Table
.Table
(
393 Table_Component_Type
=> Interrupt_State_Record
,
394 Table_Index_Type
=> Interrupt_State_Id
'Base,
395 Table_Low_Bound
=> Interrupt_State_Id
'First,
396 Table_Initial
=> 100,
397 Table_Increment
=> 200,
398 Table_Name
=> "Interrupt_States");
400 -----------------------------------------
401 -- Priority Specific Dispatching Table --
402 -----------------------------------------
404 -- An entry is made in this table for each S (priority specific
405 -- dispatching) line encountered in the input ALI file. The
406 -- First/Last_Specific_Dispatching_Id fields of the ALI file
407 -- entry show the range of entries defined within a particular
410 type Specific_Dispatching_Record
is record
411 Dispatching_Policy
: Character;
412 -- First character (upper case) of the corresponding policy name
414 First_Priority
: Nat
;
415 -- Lower bound of the priority range to which the specified dispatching
419 -- Upper bound of the priority range to which the specified dispatching
422 PSD_Pragma_Line
: Nat
;
423 -- Line number of Priority_Specific_Dispatching pragma
426 package Specific_Dispatching
is new Table
.Table
(
427 Table_Component_Type
=> Specific_Dispatching_Record
,
428 Table_Index_Type
=> Priority_Specific_Dispatching_Id
'Base,
429 Table_Low_Bound
=> Priority_Specific_Dispatching_Id
'First,
430 Table_Initial
=> 100,
431 Table_Increment
=> 200,
432 Table_Name
=> "Priority_Specific_Dispatching");
438 -- These switches record status information about ali files that
439 -- have been read, for quick reference without searching tables.
441 -- Note: a switch will be left set at its default value if the line
442 -- which might otherwise set it is ignored (from Ignore_Lines).
444 Dynamic_Elaboration_Checks_Specified
: Boolean := False;
445 -- Set to False by Initialize_ALI. Set to True if Scan_ALI reads
446 -- a unit for which dynamic elaboration checking is enabled.
448 Float_Format_Specified
: Character := ' ';
449 -- Set to blank by Initialize_ALI. Set to appropriate float format
450 -- character (V or I, see Opt.Float_Format) if an ali file that
451 -- is read contains an F line setting the floating point format.
453 Initialize_Scalars_Used
: Boolean := False;
454 -- Set True if an ali file contains the Initialize_Scalars flag
456 Locking_Policy_Specified
: Character := ' ';
457 -- Set to blank by Initialize_ALI. Set to the appropriate locking policy
458 -- character if an ali file contains a P line setting the locking policy.
460 No_Normalize_Scalars_Specified
: Boolean := False;
461 -- Set to False by Initialize_ALI. Set to True if an ali file indicates
462 -- that the file was compiled without normalize scalars.
464 No_Object_Specified
: Boolean := False;
465 -- Set to False by Initialize_ALI. Set to True if an ali file contains
466 -- the No_Object flag.
468 Normalize_Scalars_Specified
: Boolean := False;
469 -- Set to False by Initialize_ALI. Set to True if an ali file indicates
470 -- that the file was compiled in Normalize_Scalars mode.
472 Queuing_Policy_Specified
: Character := ' ';
473 -- Set to blank by Initialize_ALI. Set to the appropriate queuing policy
474 -- character if an ali file contains a P line setting the queuing policy.
476 Cumulative_Restrictions
: Restrictions_Info
:= No_Restrictions
;
477 -- This variable records the cumulative contributions of R lines in all
478 -- ali files, showing whether a restriction pragma exists anywhere, and
479 -- accumulating the aggregate knowledge of violations.
481 Stack_Check_Switch_Set
: Boolean := False;
482 -- Set to True if at least one ALI file contains '-fstack-check' in its
485 Static_Elaboration_Model_Used
: Boolean := False;
486 -- Set to False by Initialize_ALI. Set to True if any ALI file for a
487 -- non-internal unit compiled with the static elaboration model is
490 Task_Dispatching_Policy_Specified
: Character := ' ';
491 -- Set to blank by Initialize_ALI. Set to the appropriate task dispatching
492 -- policy character if an ali file contains a P line setting the
493 -- task dispatching policy.
495 Unreserve_All_Interrupts_Specified
: Boolean := False;
496 -- Set to False by Initialize_ALI. Set to True if an ali file is read that
497 -- has P line specifying unreserve all interrupts mode.
499 Zero_Cost_Exceptions_Specified
: Boolean := False;
500 -- Set to False by Initialize_ALI. Set to True if an ali file is read that
501 -- has a P line specifying the generation of zero cost exceptions.
507 -- Each With line (W line) in an ALI file generates a Withs table entry
509 -- Note: there will be no entries in this table if 'W' lines are ignored
511 No_With_Id
: constant With_Id
:= With_Id
'First;
512 -- Special value indicating no withs table entry
514 First_With_Entry
: constant With_Id
:= No_With_Id
+ 1;
515 -- Id of first actual entry in table
517 type With_Record
is record
519 Uname
: Unit_Name_Type
;
522 Sfile
: File_Name_Type
;
523 -- Name of source file, set to No_File in generic case
525 Afile
: File_Name_Type
;
526 -- Name of ALI file, set to No_File in generic case
529 -- Indicates presence of E parameter
531 Elaborate_All
: Boolean;
532 -- Indicates presence of EA parameter
534 Elab_All_Desirable
: Boolean;
535 -- Indicates presence of AD parameter
537 Elab_Desirable
: Boolean;
538 -- Indicates presence of ED parameter
540 SAL_Interface
: Boolean := False;
541 -- True if the Unit is an Interface of a Stand-Alone Library
543 Limited_With
: Boolean := False;
544 -- True if unit is named in a limited_with_clause
547 package Withs
is new Table
.Table
(
548 Table_Component_Type
=> With_Record
,
549 Table_Index_Type
=> With_Id
,
550 Table_Low_Bound
=> First_With_Entry
,
551 Table_Initial
=> 5000,
552 Table_Increment
=> 200,
553 Table_Name
=> "Withs");
555 ---------------------
556 -- Arguments Table --
557 ---------------------
559 -- Each Arg line (A line) in an ALI file generates an Args table entry
561 -- Note: there will be no entries in this table if 'A' lines are ignored
563 No_Arg_Id
: constant Arg_Id
:= Arg_Id
'First;
564 -- Special value indicating no args table entry
566 First_Arg_Entry
: constant Arg_Id
:= No_Arg_Id
+ 1;
567 -- Id of first actual entry in table
569 package Args
is new Table
.Table
(
570 Table_Component_Type
=> String_Ptr
,
571 Table_Index_Type
=> Arg_Id
,
572 Table_Low_Bound
=> First_Arg_Entry
,
573 Table_Initial
=> 1000,
574 Table_Increment
=> 100,
575 Table_Name
=> "Args");
577 --------------------------
578 -- Linker_Options Table --
579 --------------------------
581 -- If an ALI file has one of more Linker_Options lines, then a single
582 -- entry is made in this table. If more than one Linker_Options lines
583 -- appears in a given ALI file, then the arguments are concatenated
584 -- to form the entry in this table, using a NUL character as the
585 -- separator, and a final NUL character is appended to the end.
587 -- Note: there will be no entries in this table if 'L' lines are ignored
589 type Linker_Option_Record
is record
591 -- Name entry containing concatenated list of Linker_Options
592 -- arguments separated by NUL and ended by NUL as described above.
595 -- Unit_Id for the entry
597 Internal_File
: Boolean;
598 -- Set True if the linker options are from an internal file. This is
599 -- used to insert certain standard entries after all the user entries
600 -- but before the entries from the run-time.
602 Original_Pos
: Positive;
603 -- Keep track of original position in the linker options table. This
604 -- is used to implement a stable sort when we sort the linker options
608 -- The indexes of active entries in this table range from 1 to the
609 -- value of Linker_Options.Last. The zero'th element is for sort call.
611 package Linker_Options
is new Table
.Table
(
612 Table_Component_Type
=> Linker_Option_Record
,
613 Table_Index_Type
=> Integer,
614 Table_Low_Bound
=> 0,
615 Table_Initial
=> 200,
616 Table_Increment
=> 400,
617 Table_Name
=> "Linker_Options");
623 -- The notes table records entries from N lines
625 type Notes_Record
is record
626 Pragma_Type
: Character;
627 -- 'A', 'C', 'I', 'S', 'T' for Annotate/Comment/Ident/Subtitle/Title
630 -- Line number of pragma
633 -- Column number of pragma
636 -- Unit_Id for the entry
638 Pragma_Args
: Name_Id
;
639 -- Pragma arguments. No_Name if no arguments, otherwise a single
640 -- name table entry consisting of all the characters on the notes
641 -- line from the first non-blank character following the source
642 -- location to the last character on the line.
645 -- The indexes of active entries in this table range from 1 to the
646 -- value of Linker_Options.Last. The zero'th element is for convenience
647 -- if the table needs to be sorted.
649 package Notes
is new Table
.Table
(
650 Table_Component_Type
=> Notes_Record
,
651 Table_Index_Type
=> Integer,
652 Table_Low_Bound
=> 0,
653 Table_Initial
=> 200,
654 Table_Increment
=> 400,
655 Table_Name
=> "Notes");
657 -------------------------------------------
658 -- External Version Reference Hash Table --
659 -------------------------------------------
661 -- This hash table keeps track of external version reference strings
662 -- as read from E lines in the ali file. The stored values do not
663 -- include the terminating quote characters.
665 -- Note: there will be no entries in this table if 'E' lines are ignored
667 type Vindex
is range 0 .. 98;
668 -- Type to define range of headers
670 function SHash
(S
: String_Ptr
) return Vindex
;
671 -- Hash function for this table
673 function SEq
(F1
, F2
: String_Ptr
) return Boolean;
674 -- Equality function for this table
676 package Version_Ref
is new Simple_HTable
(
677 Header_Num
=> Vindex
,
684 -------------------------
685 -- No_Dependency Table --
686 -------------------------
688 -- Each R line for a No_Dependency Restriction generates an entry in
689 -- this No_Dependency table.
691 type No_Dep_Record
is record
693 -- ALI File containing the entry
695 No_Dep_Unit
: Name_Id
;
696 -- Id for names table entry including entire name, including periods
699 package No_Deps
is new Table
.Table
(
700 Table_Component_Type
=> No_Dep_Record
,
701 Table_Index_Type
=> Integer,
702 Table_Low_Bound
=> 0,
703 Table_Initial
=> 200,
704 Table_Increment
=> 400,
705 Table_Name
=> "No_Deps");
707 ------------------------------------
708 -- Sdep (Source Dependency) Table --
709 ------------------------------------
711 -- Each source dependency (D line) in an ALI file generates an entry in the
714 -- Note: there will be no entries in this table if 'D' lines are ignored
716 No_Sdep_Id
: constant Sdep_Id
:= Sdep_Id
'First;
717 -- Special value indicating no Sdep table entry
719 First_Sdep_Entry
: Sdep_Id
:= No_Sdep_Id
+ 1;
720 -- Id of first Sdep entry for current ali file. This is initialized to the
721 -- first Sdep entry in the table, and then incremented appropriately as
722 -- successive ALI files are scanned.
724 type Sdep_Record
is record
726 Sfile
: File_Name_Type
;
727 -- Name of source file
729 Stamp
: Time_Stamp_Type
;
730 -- Time stamp value. Note that this will be all zero characters for the
731 -- dummy entries for missing or non-dependent files.
734 -- Checksum value. Note that this will be all zero characters for the
735 -- dummy entries for missing or non-dependent files
737 Dummy_Entry
: Boolean;
738 -- Set True for dummy entries that correspond to missing files or files
739 -- where no dependency relationship exists.
741 Subunit_Name
: Name_Id
;
742 -- Name_Id for subunit name if present, else No_Name
744 Rfile
: File_Name_Type
;
745 -- Reference file name. Same as Sfile unless a Source_Reference pragma
746 -- was used, in which case it reflects the name used in the pragma.
749 -- Starting line number in file. Always 1, unless a Source_Reference
750 -- pragma was used, in which case it reflects the line number value
751 -- given in the pragma.
755 package Sdep
is new Table
.Table
(
756 Table_Component_Type
=> Sdep_Record
,
757 Table_Index_Type
=> Sdep_Id
,
758 Table_Low_Bound
=> First_Sdep_Entry
,
759 Table_Initial
=> 5000,
760 Table_Increment
=> 200,
761 Table_Name
=> "Sdep");
763 ----------------------------
764 -- Use of Name Table Info --
765 ----------------------------
767 -- All unit names and file names are entered into the Names table. The Info
768 -- fields of these entries are used as follows:
770 -- Unit name Info field has Unit_Id of unit table entry
771 -- ALI file name Info field has ALI_Id of ALI table entry
772 -- Source file name Info field has Source_Id of source table entry
774 --------------------------
775 -- Cross-Reference Data --
776 --------------------------
778 -- The following table records cross-reference sections, there is one entry
779 -- for each X header line in the ALI file for an xref section.
781 -- Note: there will be no entries in this table if 'X' lines are ignored
783 type Xref_Section_Record
is record
785 -- Dependency number for file (entry in Sdep.Table)
787 File_Name
: File_Name_Type
;
791 -- First entry in Xref_Entity table
794 -- Last entry in Xref_Entity table
797 package Xref_Section
is new Table
.Table
(
798 Table_Component_Type
=> Xref_Section_Record
,
799 Table_Index_Type
=> Nat
,
800 Table_Low_Bound
=> 1,
802 Table_Increment
=> 300,
803 Table_Name
=> "Xref_Section");
805 -- The following is used to indicate whether a typeref field is present
806 -- for the entity, and if so what kind of typeref field.
809 Tref_None
, -- No typeref present
810 Tref_Access
, -- Access type typeref (points to designated type)
811 Tref_Derived
, -- Derived type typeref (points to parent type)
812 Tref_Type
); -- All other cases
814 type Visibility_Kind
is
815 (Global
, -- Library level entity
816 Static
, -- Static C/C++ entity
817 Other
); -- Local and other entity
819 -- The following table records entities for which xrefs are recorded
821 type Xref_Entity_Record
is record
823 -- Line number of definition
826 -- Set to the identification character for the entity. See section
827 -- "Cross-Reference Entity Identifiers" in lib-xref.ads for details.
830 -- Column number of definition
832 Visibility
: Visibility_Kind
;
833 -- Visiblity of entity
838 Iref_File_Num
: Sdep_Id
;
839 -- This field is set to the dependency reference for the file containing
840 -- the generic entity that this one instantiates, or to No_Sdep_Id if
841 -- the current entity is not an instantiation
844 -- This field is set to the line number in Iref_File_Num of the generic
845 -- entity that this one instantiates, or to zero if the current entity
846 -- is not an instantiation.
849 -- This field is set to the line number of a renaming reference if
850 -- one is present, or to zero if no renaming reference is present
853 -- This field is set to the column number of a renaming reference
854 -- if one is present, or to zero if no renaming reference is present.
857 -- Indicates if a typeref is present, and if so what kind. Set to
858 -- Tref_None if no typeref field is present.
860 Tref_File_Num
: Sdep_Id
;
861 -- This field is set to No_Sdep_Id if no typeref is present, or
862 -- if the typeref refers to an entity in standard. Otherwise it
863 -- it is the dependency reference for the file containing the
864 -- declaration of the typeref entity.
867 -- This field is set to zero if no typeref is present, or if the
868 -- typeref refers to an entity in standard. Otherwise it contains
869 -- the line number of the declaration of the typeref entity.
871 Tref_Type
: Character;
872 -- This field is set to blank if no typeref is present, or if the
873 -- typeref refers to an entity in standard. Otherwise it contains
874 -- the identification character for the typeref entity. See section
875 -- "Cross-Reference Entity Identifiers" in lib-xref.ads for details.
878 -- This field is set to zero if no typeref is present, or if the
879 -- typeref refers to an entity in standard. Otherwise it contains
880 -- the column number of the declaration of the parent type.
882 Tref_Standard_Entity
: Name_Id
;
883 -- This field is set to No_Name if no typeref is present or if the
884 -- typeref refers to a declared entity rather than an entity in
885 -- package Standard. If there is a typeref that references an
886 -- entity in package Standard, then this field is a Name_Id
887 -- reference for the entity name.
889 Oref_File_Num
: Sdep_Id
;
890 -- This field is set to No_Sdep_Id if the entity doesn't override any
891 -- other entity, or to the dependency reference for the overridden
896 -- These two fields are set to the line and column of the overridden
900 -- Index into Xref table of first cross-reference
903 -- Index into Xref table of last cross-reference. The value in
904 -- Last_Xref can be less than the First_Xref value to indicate
905 -- that no entries are present in the Xref Table.
908 package Xref_Entity
is new Table
.Table
(
909 Table_Component_Type
=> Xref_Entity_Record
,
910 Table_Index_Type
=> Nat
,
911 Table_Low_Bound
=> 1,
912 Table_Initial
=> 500,
913 Table_Increment
=> 300,
914 Table_Name
=> "Xref_Entity");
916 Array_Index_Reference
: constant Character := '*';
917 Interface_Reference
: constant Character := 'I';
918 -- Some special types of references. In the ALI file itself, these
919 -- are output as attributes of the entity, not as references, but
920 -- there is no provision in Xref_Entity_Record for storing multiple
923 -- The following table records actual cross-references
925 type Xref_Record
is record
927 -- Set to the file dependency number for the cross-reference. Note
928 -- that if no file entry is present explicitly, this is just a copy
929 -- of the reference for the current cross-reference section.
932 -- Line number for the reference. This is zero when referencing a
933 -- predefined entity, but in this case Name is set.
936 -- Indicates type of reference, using code used in ALI file:
940 -- c = completion of private or incomplete type
941 -- x = type extension
942 -- i = implicit reference
943 -- Array_Index_Reference = reference to the index of an array
944 -- Interface_Reference = reference to an interface implemented
946 -- See description in lib-xref.ads for further details
949 -- Column number for the reference
951 Name
: Name_Id
:= No_Name
;
952 -- This is only used when referencing a predefined entity. Currently,
953 -- this only occurs for array indexes.
955 -- Note: for instantiation references, Rtype is set to ' ', and Col is
956 -- set to zero. One or more such entries can follow any other reference.
957 -- When there is more than one such entry, this is to be read as:
958 -- e.g. ref1 ref2 ref3
959 -- ref1 is a reference to an entity that was instantied at ref2.
960 -- ref2 itself is also the result of an instantiation, that took
964 package Xref
is new Table
.Table
(
965 Table_Component_Type
=> Xref_Record
,
966 Table_Index_Type
=> Nat
,
967 Table_Low_Bound
=> 1,
968 Table_Initial
=> 2000,
969 Table_Increment
=> 300,
970 Table_Name
=> "Xref");
972 --------------------------------------
973 -- Subprograms for Reading ALI File --
974 --------------------------------------
976 procedure Initialize_ALI
;
977 -- Initialize the ALI tables. Also resets all switch values to defaults
984 Read_Xref
: Boolean := False;
985 Read_Lines
: String := "";
986 Ignore_Lines
: String := "X";
987 Ignore_Errors
: Boolean := False;
988 Directly_Scanned
: Boolean := False) return ALI_Id
;
989 -- Given the text, T, of an ALI file, F, scan and store the information
990 -- from the file, and return the Id of the resulting entry in the ALI
991 -- table. Switch settings may be modified as described above in the
992 -- switch description settings.
994 -- Ignore_ED is normally False. If set to True, it indicates that
995 -- all AD/ED (elaboration desirable) indications in the ALI file are
996 -- to be ignored. This parameter is obsolete now that the -f switch
997 -- is removed from gnatbind, and should be removed ???
999 -- Err determines the action taken on an incorrectly formatted file.
1000 -- If Err is False, then an error message is output, and the program
1001 -- is terminated. If Err is True, then no error message is output,
1002 -- and No_ALI_Id is returned.
1004 -- Ignore_Lines requests that Scan_ALI ignore any lines that start
1005 -- with any given key character. The default value of X causes all
1006 -- Xref lines to be ignored. The corresponding data in the ALI
1007 -- tables will not be filled in this case. It is not possible
1008 -- to ignore U (unit) lines, they are always read.
1010 -- Read_Lines requests that Scan_ALI process only lines that start
1011 -- with one of the given characters. The corresponding data in the
1012 -- ALI file for any characters not given in the list will not be
1013 -- set. The default value of the null string indicates that all
1014 -- lines should be read (unless Ignore_Lines is specified). U
1015 -- (unit) lines are always read regardless of the value of this
1018 -- Note: either Ignore_Lines or Read_Lines should be non-null, but not
1019 -- both. If both are provided then only the Read_Lines value is used,
1020 -- and the Ignore_Lines parameter is ignored.
1022 -- Read_XREF is set True to read and acquire the cross-reference
1023 -- information. If Read_XREF is set to True, then the effect is to ignore
1024 -- all lines other than U, W, D and X lines and the Ignore_Lines and
1025 -- Read_Lines parameters are ignored (i.e. the use of True for Read_XREF
1026 -- is equivalent to specifying an argument of "UWDX" for Read_Lines.
1028 -- Ignore_Errors is normally False. If it is set True, then Scan_ALI
1029 -- will do its best to scan through a file and extract all information
1030 -- it can, even if there are errors. In this case Err is only set if
1031 -- Scan_ALI was completely unable to process the file (e.g. it did not
1032 -- look like an ALI file at all). Ignore_Errors is intended to improve
1033 -- the downward compatibility of new compilers with old tools.
1035 -- Directly_Scanned is normally False. If it is set to True, then the
1036 -- units (spec and/or body) corresponding to the ALI file are marked as
1037 -- such. It is used to decide for what units gnatbind should generate
1038 -- the symbols corresponding to 'Version or 'Body_Version in
1039 -- Stand-Alone Libraries.