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-- --
-- GNAT COMPILER COMPONENTS --
-- --
-- A L I --
-- --
-- S p e c --
-- --
-- Copyright (C) 1992-2015, Free Software Foundation, Inc. --
-- --
-- GNAT is free software; you can redistribute it and/or modify it under --
-- terms of the GNU General Public License as published by the Free Soft- --
-- ware Foundation; either version 3, or (at your option) any later ver- --
-- sion. GNAT is distributed in the hope that it will be useful, but WITH- --
-- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY --
-- or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License --
-- for more details. You should have received a copy of the GNU General --
-- Public License distributed with GNAT; see file COPYING3. If not, go to --
-- http://www.gnu.org/licenses for a complete copy of the license. --
-- --
-- GNAT was originally developed by the GNAT team at New York University. --
-- Extensive contributions were provided by Ada Core Technologies Inc. --
-- --
------------------------------------------------------------------------------
-- This package defines the internal data structures used for representation
-- of Ada Library Information (ALI) acquired from the ALI files generated by
-- the front end.
with Casing; use Casing;
with Gnatvsn; use Gnatvsn;
with Namet; use Namet;
with Rident; use Rident;
with Table;
with Types; use Types;
with GNAT.HTable; use GNAT.HTable;
package ALI is
--------------
-- Id Types --
--------------
-- The various entries are stored in tables with distinct subscript ranges.
-- The following type definitions show the ranges used for the subscripts
-- (Id values) for the various tables.
type ALI_Id is range 0 .. 999_999;
-- Id values used for ALIs table entries
type Unit_Id is range 1_000_000 .. 1_999_999;
-- Id values used for Unit table entries
type With_Id is range 2_000_000 .. 2_999_999;
-- Id values used for Withs table entries
type Arg_Id is range 3_000_000 .. 3_999_999;
-- Id values used for argument table entries
type Sdep_Id is range 4_000_000 .. 4_999_999;
-- Id values used for Sdep table entries
type Source_Id is range 5_000_000 .. 5_999_999;
-- Id values used for Source table entries
type Interrupt_State_Id is range 6_000_000 .. 6_999_999;
-- Id values used for Interrupt_State table entries
type Priority_Specific_Dispatching_Id is range 7_000_000 .. 7_999_999;
-- Id values used for Priority_Specific_Dispatching table entries
--------------------
-- ALI File Table --
--------------------
-- Each ALI file read generates an entry in the ALIs table
No_ALI_Id : constant ALI_Id := ALI_Id'First;
-- Special value indicating no ALI entry
First_ALI_Entry : constant ALI_Id := No_ALI_Id + 1;
-- Id of first actual entry in table
type Main_Program_Type is (None, Proc, Func);
-- Indicator of whether unit can be used as main program
type ALIs_Record is record
Afile : File_Name_Type;
-- Name of ALI file
Ofile_Full_Name : File_Name_Type;
-- Full name of object file corresponding to the ALI file
Sfile : File_Name_Type;
-- Name of source file that generates this ALI file (which is equal
-- to the name of the source file in the first unit table entry for
-- this ALI file, since the body if present is always first).
Ver : String (1 .. Ver_Len_Max);
-- Value of library version (V line in ALI file). Not set if
-- V lines are ignored as a result of the Ignore_Lines parameter.
Ver_Len : Natural;
-- Length of characters stored in Ver. Not set if V lines are ignored as
-- a result of the Ignore_Lines parameter.
SAL_Interface : Boolean;
-- Set True when this is an interface to a standalone library
First_Unit : Unit_Id;
-- Id of first Unit table entry for this file
Last_Unit : Unit_Id;
-- Id of last Unit table entry for this file
First_Sdep : Sdep_Id;
-- Id of first Sdep table entry for this file
Last_Sdep : Sdep_Id;
-- Id of last Sdep table entry for this file
Main_Program : Main_Program_Type;
-- Indicator of whether first unit can be used as main program. Not set
-- if 'M' appears in Ignore_Lines.
Main_Priority : Int;
-- Indicates priority value if Main_Program field indicates that this
-- can be a main program. A value of -1 (No_Main_Priority) indicates
-- that no parameter was found, or no M line was present. Not set if
-- 'M' appears in Ignore_Lines.
Main_CPU : Int;
-- Indicates processor if Main_Program field indicates that this can
-- be a main program. A value of -1 (No_Main_CPU) indicates that no C
-- parameter was found, or no M line was present. Not set if 'M' appears
-- in Ignore_Lines.
Time_Slice_Value : Int;
-- Indicates value of time slice parameter from T=xxx on main program
-- line. A value of -1 indicates that no T=xxx parameter was found, or
-- no M line was present. Not set if 'M' appears in Ignore_Lines.
WC_Encoding : Character;
-- Wide character encoding if main procedure. Otherwise not relevant.
-- Not set if 'M' appears in Ignore_Lines.
Locking_Policy : Character;
-- Indicates locking policy for units in this file. Space means tasking
-- was not used, or that no Locking_Policy pragma was present or that
-- this is a language defined unit. Otherwise set to first character
-- (upper case) of policy name. Not set if 'P' appears in Ignore_Lines.
Partition_Elaboration_Policy : Character;
-- Indicates partition elaboration policy for units in this file. Space
-- means that no Partition_Elaboration_Policy pragma was present or that
-- this is a language defined unit. Otherwise set to first character
-- (upper case) of policy name. Not set if 'P' appears in Ignore_Lines.
Queuing_Policy : Character;
-- Indicates queuing policy for units in this file. Space means tasking
-- was not used, or that no Queuing_Policy pragma was present or that
-- this is a language defined unit. Otherwise set to first character
-- (upper case) of policy name. Not set if 'P' appears in Ignore_Lines.
Task_Dispatching_Policy : Character;
-- Indicates task dispatching policy for units in this file. Space means
-- tasking was not used, or that no Task_Dispatching_Policy pragma was
-- present or that this is a language defined unit. Otherwise set to
-- first character (upper case) of policy name. Not set if 'P' appears
-- in Ignore_Lines.
Compile_Errors : Boolean;
-- Set to True if compile errors for unit. Note that No_Object will
-- always be set as well in this case. Not set if 'P' appears in
-- Ignore_Lines.
GNATprove_Mode : Boolean;
-- Set to True if ALI and object file produced in GNATprove_Mode as
-- signalled by GP appearing on the P line. Not set if 'P' appears in
-- Ignore_Lines.
No_Object : Boolean;
-- Set to True if no object file generated. Not set if 'P' appears in
-- Ignore_Lines.
Normalize_Scalars : Boolean;
-- Set to True if file was compiled with Normalize_Scalars. Not set if
-- 'P' appears in Ignore_Lines.
SSO_Default : Character;
-- Set to 'H' or 'L' if file was compiled with a configuration pragma
-- file containing Default_Scalar_Storage_Order (High/Low_Order_First).
-- Set to ' ' if neither pragma was present. Not set if 'P' appears in
-- Ignore_Lines.
Unit_Exception_Table : Boolean;
-- Set to True if unit exception table pointer generated. Not set if 'P'
-- appears in Ignore_Lines.
Frontend_Exceptions : Boolean;
-- Set to True if file was compiled with front-end exceptions. Not set
-- if 'P' appears in Ignore_Lines.
Zero_Cost_Exceptions : Boolean;
-- Set to True if file was compiled with zero cost exceptions. Not set
-- if 'P' appears in Ignore_Lines.
Restrictions : Restrictions_Info;
-- Restrictions information reconstructed from R lines
First_Interrupt_State : Interrupt_State_Id;
Last_Interrupt_State : Interrupt_State_Id'Base;
-- These point to the first and last entries in the interrupt state
-- table for this unit. If no entries, then Last_Interrupt_State =
-- First_Interrupt_State - 1 (that's why the 'Base reference is there,
-- it can be one less than the lower bound of the subtype). Not set if
-- 'I' appears in Ignore_Lines
First_Specific_Dispatching : Priority_Specific_Dispatching_Id;
Last_Specific_Dispatching : Priority_Specific_Dispatching_Id'Base;
-- These point to the first and last entries in the priority specific
-- dispatching table for this unit. If there are no entries, then
-- Last_Specific_Dispatching = First_Specific_Dispatching - 1. That
-- is why the 'Base reference is there, it can be one less than the
-- lower bound of the subtype. Not set if 'S' appears in Ignore_Lines.
end record;
No_Main_Priority : constant Int := -1;
-- Code for no main priority set
No_Main_CPU : constant Int := -1;
-- Code for no main cpu set
package ALIs is new Table.Table (
Table_Component_Type => ALIs_Record,
Table_Index_Type => ALI_Id,
Table_Low_Bound => First_ALI_Entry,
Table_Initial => 500,
Table_Increment => 200,
Table_Name => "ALIs");
----------------
-- Unit Table --
----------------
-- Each unit within an ALI file generates an entry in the unit table
No_Unit_Id : constant Unit_Id := Unit_Id'First;
-- Special value indicating no unit table entry
First_Unit_Entry : constant Unit_Id := No_Unit_Id + 1;
-- Id of first actual entry in table
type Unit_Type is (Is_Spec, Is_Body, Is_Spec_Only, Is_Body_Only);
-- Indicates type of entry, if both body and spec appear in the ALI file,
-- then the first unit is marked Is_Body, and the second is marked Is_Spec.
-- If only a spec appears, then it is marked as Is_Spec_Only, and if only
-- a body appears, then it is marked Is_Body_Only).
subtype Version_String is String (1 .. 8);
-- Version string, taken from unit record
type Unit_Record is record
My_ALI : ALI_Id;
-- Corresponding ALI entry
Uname : Unit_Name_Type;
-- Name of Unit
Sfile : File_Name_Type;
-- Name of source file
Preelab : Boolean;
-- Indicates presence of PR parameter for a preelaborated package
No_Elab : Boolean;
-- Indicates presence of NE parameter for a unit that has does not
-- have an elaboration routine (since it has no elaboration code).
Pure : Boolean;
-- Indicates presence of PU parameter for a package having pragma Pure
Dynamic_Elab : Boolean;
-- Set to True if the unit was compiled with dynamic elaboration checks
-- (i.e. either -gnatE or pragma Elaboration_Checks (RM) was used to
-- compile the unit).
Elaborate_Body : Boolean;
-- Indicates presence of EB parameter for a package which has a pragma
-- Elaborate_Body, and also for generic package instantiations.
Set_Elab_Entity : Boolean;
-- Indicates presence of EE parameter for a unit which has an
-- elaboration entity which must be set true as part of the
-- elaboration of the unit.
Has_RACW : Boolean;
-- Indicates presence of RA parameter for a package that declares at
-- least one Remote Access to Class_Wide (RACW) object.
Remote_Types : Boolean;
-- Indicates presence of RT parameter for a package which has a
-- pragma Remote_Types.
Serious_Errors : Boolean;
-- Indicates presence of SE parameter indicating that compilation of
-- the unit encountered as serious error.
Shared_Passive : Boolean;
-- Indicates presence of SP parameter for a package which has a pragma
-- Shared_Passive.
RCI : Boolean;
-- Indicates presence of RC parameter for a package which has a pragma
-- Remote_Call_Interface.
Predefined : Boolean;
-- Indicates if unit is language predefined (or a child of such a unit)
Internal : Boolean;
-- Indicates if unit is an internal unit (or a child of such a unit)
First_With : With_Id;
-- Id of first withs table entry for this file
Last_With : With_Id;
-- Id of last withs table entry for this file
First_Arg : Arg_Id;
-- Id of first args table entry for this file
Last_Arg : Arg_Id;
-- Id of last args table entry for this file
Utype : Unit_Type;
-- Type of entry
Is_Generic : Boolean;
-- True for generic unit (i.e. a generic declaration, or a generic
-- body). False for a non-generic unit.
Unit_Kind : Character;
-- Indicates the nature of the unit. 'p' for Packages and 's' for
-- subprograms.
Version : Version_String;
-- Version of unit
Icasing : Casing_Type;
-- Indicates casing of identifiers in source file for this unit. This
-- is used for informational output, and also for constructing the main
-- unit if it is being built in Ada.
Kcasing : Casing_Type;
-- Indicates casing of keywords in source file for this unit. This is
-- used for informational output, and also for constructing the main
-- unit if it is being built in Ada.
Elab_Position : aliased Natural;
-- Initialized to zero. Set non-zero when a unit is chosen and
-- placed in the elaboration order. The value represents the
-- ordinal position in the elaboration order.
Init_Scalars : Boolean;
-- Set True if IS qualifier appears in ALI file, indicating that
-- an Initialize_Scalars pragma applies to the unit.
SAL_Interface : Boolean;
-- Set True when this is an interface to a standalone library
Directly_Scanned : Boolean;
-- True iff it is a unit from an ALI file specified to gnatbind
Body_Needed_For_SAL : Boolean;
-- Indicates that the source for the body of the unit (subprogram,
-- package, or generic unit) must be included in a standalone library.
Elaborate_Body_Desirable : Boolean;
-- Indicates that the front end elaboration circuitry decided that it
-- would be a good idea if this package had Elaborate_Body. The binder
-- will attempt, but does not promise, to place the elaboration call
-- for the body right after the call for the spec, or at least as close
-- together as possible.
Optimize_Alignment : Character;
-- Optimize_Alignment setting. Set to L/S/T/O for OL/OS/OT/OO present
Has_Finalizer : Boolean;
-- Indicates whether a package body or a spec has a library-level
-- finalization routine.
end record;
package Units is new Table.Table (
Table_Component_Type => Unit_Record,
Table_Index_Type => Unit_Id,
Table_Low_Bound => First_Unit_Entry,
Table_Initial => 100,
Table_Increment => 200,
Table_Name => "Unit");
---------------------------
-- Interrupt State Table --
---------------------------
-- An entry is made in this table for each I (interrupt state) line
-- encountered in the input ALI file. The First/Last_Interrupt_Id
-- fields of the ALI file entry show the range of entries defined
-- within a particular ALI file.
type Interrupt_State_Record is record
Interrupt_Id : Nat;
-- Id from interrupt state entry
Interrupt_State : Character;
-- State from interrupt state entry ('u'/'r'/'s')
IS_Pragma_Line : Nat;
-- Line number of Interrupt_State pragma
end record;
package Interrupt_States is new Table.Table (
Table_Component_Type => Interrupt_State_Record,
Table_Index_Type => Interrupt_State_Id'Base,
Table_Low_Bound => Interrupt_State_Id'First,
Table_Initial => 100,
Table_Increment => 200,
Table_Name => "Interrupt_States");
-----------------------------------------
-- Priority Specific Dispatching Table --
-----------------------------------------
-- An entry is made in this table for each S (priority specific
-- dispatching) line encountered in the input ALI file. The
-- First/Last_Specific_Dispatching_Id fields of the ALI file
-- entry show the range of entries defined within a particular
-- ALI file.
type Specific_Dispatching_Record is record
Dispatching_Policy : Character;
-- First character (upper case) of the corresponding policy name
First_Priority : Nat;
-- Lower bound of the priority range to which the specified dispatching
-- policy applies.
Last_Priority : Nat;
-- Upper bound of the priority range to which the specified dispatching
-- policy applies.
PSD_Pragma_Line : Nat;
-- Line number of Priority_Specific_Dispatching pragma
end record;
package Specific_Dispatching is new Table.Table (
Table_Component_Type => Specific_Dispatching_Record,
Table_Index_Type => Priority_Specific_Dispatching_Id'Base,
Table_Low_Bound => Priority_Specific_Dispatching_Id'First,
Table_Initial => 100,
Table_Increment => 200,
Table_Name => "Priority_Specific_Dispatching");
--------------
-- Switches --
--------------
-- These switches record status information about ali files that
-- have been read, for quick reference without searching tables.
-- Note: a switch will be left set at its default value if the line
-- which might otherwise set it is ignored (from Ignore_Lines).
Dynamic_Elaboration_Checks_Specified : Boolean := False;
-- Set to False by Initialize_ALI. Set to True if Scan_ALI reads
-- a unit for which dynamic elaboration checking is enabled.
Frontend_Exceptions_Specified : Boolean := False;
-- Set to False by Initialize_ALI. Set to True if an ali file is read that
-- has a P line specifying the generation of front-end exceptions.
GNATprove_Mode_Specified : Boolean := False;
-- Set to True if an ali file was produced in GNATprove mode.
Initialize_Scalars_Used : Boolean := False;
-- Set True if an ali file contains the Initialize_Scalars flag
Locking_Policy_Specified : Character := ' ';
-- Set to blank by Initialize_ALI. Set to the appropriate locking policy
-- character if an ali file contains a P line setting the locking policy.
No_Normalize_Scalars_Specified : Boolean := False;
-- Set to False by Initialize_ALI. Set to True if an ali file indicates
-- that the file was compiled without normalize scalars.
No_Object_Specified : Boolean := False;
-- Set to False by Initialize_ALI. Set to True if an ali file contains
-- the No_Object flag.
Normalize_Scalars_Specified : Boolean := False;
-- Set to False by Initialize_ALI. Set to True if an ali file indicates
-- that the file was compiled in Normalize_Scalars mode.
Partition_Elaboration_Policy_Specified : Character := ' ';
-- Set to blank by Initialize_ALI. Set to the appropriate partition
-- elaboration policy character if an ali file contains a P line setting
-- the policy.
Queuing_Policy_Specified : Character := ' ';
-- Set to blank by Initialize_ALI. Set to the appropriate queuing policy
-- character if an ali file contains a P line setting the queuing policy.
Cumulative_Restrictions : Restrictions_Info := No_Restrictions;
-- This variable records the cumulative contributions of R lines in all
-- ali files, showing whether a restriction pragma exists anywhere, and
-- accumulating the aggregate knowledge of violations.
SSO_Default_Specified : Boolean := False;
-- Set to True if at least one ALI file contains an OH/OL flag indicating
-- that it was compiled with a configuration pragmas file containing the
-- pragma Default_Scalar_Storage_Order (OH/OL present in ALI file P line).
Stack_Check_Switch_Set : Boolean := False;
-- Set to True if at least one ALI file contains '-fstack-check' in its
-- argument list.
Static_Elaboration_Model_Used : Boolean := False;
-- Set to False by Initialize_ALI. Set to True if any ALI file for a
-- non-internal unit compiled with the static elaboration model is
-- encountered.
Task_Dispatching_Policy_Specified : Character := ' ';
-- Set to blank by Initialize_ALI. Set to the appropriate task dispatching
-- policy character if an ali file contains a P line setting the
-- task dispatching policy.
Unreserve_All_Interrupts_Specified : Boolean := False;
-- Set to False by Initialize_ALI. Set to True if an ali file is read that
-- has P line specifying unreserve all interrupts mode.
Zero_Cost_Exceptions_Specified : Boolean := False;
-- Set to False by Initialize_ALI. Set to True if an ali file is read that
-- has a P line specifying the generation of zero cost exceptions.
-----------------
-- Withs Table --
-----------------
-- Each With line (W line) in an ALI file generates a Withs table entry
-- Note: there will be no entries in this table if 'W' lines are ignored
No_With_Id : constant With_Id := With_Id'First;
-- Special value indicating no withs table entry
First_With_Entry : constant With_Id := No_With_Id + 1;
-- Id of first actual entry in table
type With_Record is record
Uname : Unit_Name_Type;
-- Name of Unit
Sfile : File_Name_Type;
-- Name of source file, set to No_File in generic case
Afile : File_Name_Type;
-- Name of ALI file, set to No_File in generic case
Elaborate : Boolean;
-- Indicates presence of E parameter
Elaborate_All : Boolean;
-- Indicates presence of EA parameter
Elab_All_Desirable : Boolean;
-- Indicates presence of AD parameter
Elab_Desirable : Boolean;
-- Indicates presence of ED parameter
SAL_Interface : Boolean := False;
-- True if the Unit is an Interface of a Stand-Alone Library
Limited_With : Boolean := False;
-- True if unit is named in a limited_with_clause
Implicit_With_From_Instantiation : Boolean := False;
-- True if this is an implicit with from a generic instantiation
end record;
package Withs is new Table.Table (
Table_Component_Type => With_Record,
Table_Index_Type => With_Id,
Table_Low_Bound => First_With_Entry,
Table_Initial => 5000,
Table_Increment => 200,
Table_Name => "Withs");
---------------------
-- Arguments Table --
---------------------
-- Each Arg line (A line) in an ALI file generates an Args table entry
-- Note: there will be no entries in this table if 'A' lines are ignored
No_Arg_Id : constant Arg_Id := Arg_Id'First;
-- Special value indicating no args table entry
First_Arg_Entry : constant Arg_Id := No_Arg_Id + 1;
-- Id of first actual entry in table
package Args is new Table.Table (
Table_Component_Type => String_Ptr,
Table_Index_Type => Arg_Id,
Table_Low_Bound => First_Arg_Entry,
Table_Initial => 1000,
Table_Increment => 100,
Table_Name => "Args");
--------------------------
-- Linker_Options Table --
--------------------------
-- If an ALI file has one of more Linker_Options lines, then a single
-- entry is made in this table. If more than one Linker_Options lines
-- appears in a given ALI file, then the arguments are concatenated
-- to form the entry in this table, using a NUL character as the
-- separator, and a final NUL character is appended to the end.
-- Note: there will be no entries in this table if 'L' lines are ignored
type Linker_Option_Record is record
Name : Name_Id;
-- Name entry containing concatenated list of Linker_Options
-- arguments separated by NUL and ended by NUL as described above.
Unit : Unit_Id;
-- Unit_Id for the entry
Internal_File : Boolean;
-- Set True if the linker options are from an internal file. This is
-- used to insert certain standard entries after all the user entries
-- but before the entries from the run-time.
Original_Pos : Positive;
-- Keep track of original position in the linker options table. This
-- is used to implement a stable sort when we sort the linker options
-- table.
end record;
-- The indexes of active entries in this table range from 1 to the
-- value of Linker_Options.Last. The zero'th element is for sort call.
package Linker_Options is new Table.Table (
Table_Component_Type => Linker_Option_Record,
Table_Index_Type => Integer,
Table_Low_Bound => 0,
Table_Initial => 200,
Table_Increment => 400,
Table_Name => "Linker_Options");
-----------------
-- Notes Table --
-----------------
-- The notes table records entries from N lines
type Notes_Record is record
Pragma_Type : Character;
-- 'A', 'C', 'I', 'S', 'T' for Annotate/Comment/Ident/Subtitle/Title
Pragma_Line : Nat;
-- Line number of pragma
Pragma_Col : Nat;
-- Column number of pragma
Pragma_Source_File : File_Name_Type;
-- Source file of pragma
Pragma_Args : Name_Id;
-- Pragma arguments. No_Name if no arguments, otherwise a single
-- name table entry consisting of all the characters on the notes
-- line from the first non-blank character following the source
-- location to the last character on the line.
end record;
-- The indexes of active entries in this table range from 1 to the
-- value of Linker_Options.Last. The zero'th element is for convenience
-- if the table needs to be sorted.
package Notes is new Table.Table (
Table_Component_Type => Notes_Record,
Table_Index_Type => Integer,
Table_Low_Bound => 0,
Table_Initial => 200,
Table_Increment => 400,
Table_Name => "Notes");
-------------------------------------------
-- External Version Reference Hash Table --
-------------------------------------------
-- This hash table keeps track of external version reference strings
-- as read from E lines in the ali file. The stored values do not
-- include the terminating quote characters.
-- Note: there will be no entries in this table if 'E' lines are ignored
type Vindex is range 0 .. 98;
-- Type to define range of headers
function SHash (S : String_Ptr) return Vindex;
-- Hash function for this table
function SEq (F1, F2 : String_Ptr) return Boolean;
-- Equality function for this table
package Version_Ref is new Simple_HTable (
Header_Num => Vindex,
Element => Boolean,
No_Element => False,
Key => String_Ptr,
Hash => SHash,
Equal => SEq);
-------------------------
-- No_Dependency Table --
-------------------------
-- Each R line for a No_Dependency Restriction generates an entry in
-- this No_Dependency table.
type No_Dep_Record is record
ALI_File : ALI_Id;
-- ALI File containing the entry
No_Dep_Unit : Name_Id;
-- Id for names table entry including entire name, including periods
end record;
package No_Deps is new Table.Table (
Table_Component_Type => No_Dep_Record,
Table_Index_Type => Integer,
Table_Low_Bound => 0,
Table_Initial => 200,
Table_Increment => 400,
Table_Name => "No_Deps");
------------------------------------
-- Sdep (Source Dependency) Table --
------------------------------------
-- Each source dependency (D line) in an ALI file generates an entry in the
-- Sdep table.
-- Note: there will be no entries in this table if 'D' lines are ignored
No_Sdep_Id : constant Sdep_Id := Sdep_Id'First;
-- Special value indicating no Sdep table entry
First_Sdep_Entry : Sdep_Id := No_Sdep_Id + 1;
-- Id of first Sdep entry for current ali file. This is initialized to the
-- first Sdep entry in the table, and then incremented appropriately as
-- successive ALI files are scanned.
type Sdep_Record is record
Sfile : File_Name_Type;
-- Name of source file
Stamp : Time_Stamp_Type;
-- Time stamp value. Note that this will be all zero characters for the
-- dummy entries for missing or non-dependent files.
Checksum : Word;
-- Checksum value. Note that this will be all zero characters for the
-- dummy entries for missing or non-dependent files
Dummy_Entry : Boolean;
-- Set True for dummy entries that correspond to missing files or files
-- where no dependency relationship exists.
Subunit_Name : Name_Id;
-- Name_Id for subunit name if present, else No_Name
Unit_Name : Name_Id;
-- Name_Id for the unit name if not a subunit (No_Name for a subunit)
Rfile : File_Name_Type;
-- Reference file name. Same as Sfile unless a Source_Reference pragma
-- was used, in which case it reflects the name used in the pragma.
Start_Line : Nat;
-- Starting line number in file. Always 1, unless a Source_Reference
-- pragma was used, in which case it reflects the line number value
-- given in the pragma.
end record;
package Sdep is new Table.Table (
Table_Component_Type => Sdep_Record,
Table_Index_Type => Sdep_Id,
Table_Low_Bound => First_Sdep_Entry,
Table_Initial => 5000,
Table_Increment => 200,
Table_Name => "Sdep");
----------------------------
-- Use of Name Table Info --
----------------------------
-- All unit names and file names are entered into the Names table. The Info
-- fields of these entries are used as follows:
-- Unit name Info field has Unit_Id of unit table entry
-- ALI file name Info field has ALI_Id of ALI table entry
-- Source file name Info field has Source_Id of source table entry
--------------------------
-- Cross-Reference Data --
--------------------------
-- The following table records cross-reference sections, there is one entry
-- for each X header line in the ALI file for an xref section.
-- Note: there will be no entries in this table if 'X' lines are ignored
type Xref_Section_Record is record
File_Num : Sdep_Id;
-- Dependency number for file (entry in Sdep.Table)
File_Name : File_Name_Type;
-- Name of file
First_Entity : Nat;
-- First entry in Xref_Entity table
Last_Entity : Nat;
-- Last entry in Xref_Entity table
end record;
package Xref_Section is new Table.Table (
Table_Component_Type => Xref_Section_Record,
Table_Index_Type => Nat,
Table_Low_Bound => 1,
Table_Initial => 50,
Table_Increment => 300,
Table_Name => "Xref_Section");
-- The following is used to indicate whether a typeref field is present
-- for the entity, and if so what kind of typeref field.
type Tref_Kind is (
Tref_None, -- No typeref present
Tref_Access, -- Access type typeref (points to designated type)
Tref_Derived, -- Derived type typeref (points to parent type)
Tref_Type); -- All other cases
type Visibility_Kind is
(Global, -- Library level entity
Static, -- Static C/C++ entity
Other); -- Local and other entity
-- The following table records entities for which xrefs are recorded
type Xref_Entity_Record is record
Line : Pos;
-- Line number of definition
Etype : Character;
-- Set to the identification character for the entity. See section
-- "Cross-Reference Entity Identifiers" in lib-xref.ads for details.
Col : Pos;
-- Column number of definition
Visibility : Visibility_Kind;
-- Visibility of entity
Entity : Name_Id;
-- Name of entity
Iref_File_Num : Sdep_Id;
-- This field is set to the dependency reference for the file containing
-- the generic entity that this one instantiates, or to No_Sdep_Id if
-- the current entity is not an instantiation
Iref_Line : Nat;
-- This field is set to the line number in Iref_File_Num of the generic
-- entity that this one instantiates, or to zero if the current entity
-- is not an instantiation.
Rref_Line : Nat;
-- This field is set to the line number of a renaming reference if
-- one is present, or to zero if no renaming reference is present
Rref_Col : Nat;
-- This field is set to the column number of a renaming reference
-- if one is present, or to zero if no renaming reference is present.
Tref : Tref_Kind;
-- Indicates if a typeref is present, and if so what kind. Set to
-- Tref_None if no typeref field is present.
Tref_File_Num : Sdep_Id;
-- This field is set to No_Sdep_Id if no typeref is present, or
-- if the typeref refers to an entity in standard. Otherwise it
-- it is the dependency reference for the file containing the
-- declaration of the typeref entity.
Tref_Line : Nat;
-- This field is set to zero if no typeref is present, or if the
-- typeref refers to an entity in standard. Otherwise it contains
-- the line number of the declaration of the typeref entity.
Tref_Type : Character;
-- This field is set to blank if no typeref is present, or if the
-- typeref refers to an entity in standard. Otherwise it contains
-- the identification character for the typeref entity. See section
-- "Cross-Reference Entity Identifiers" in lib-xref.ads for details.
Tref_Col : Nat;
-- This field is set to zero if no typeref is present, or if the
-- typeref refers to an entity in standard. Otherwise it contains
-- the column number of the declaration of the parent type.
Tref_Standard_Entity : Name_Id;
-- This field is set to No_Name if no typeref is present or if the
-- typeref refers to a declared entity rather than an entity in
-- package Standard. If there is a typeref that references an
-- entity in package Standard, then this field is a Name_Id
-- reference for the entity name.
Oref_File_Num : Sdep_Id;
-- This field is set to No_Sdep_Id if the entity doesn't override any
-- other entity, or to the dependency reference for the overridden
-- entity.
Oref_Line : Nat;
Oref_Col : Nat;
-- These two fields are set to the line and column of the overridden
-- entity.
First_Xref : Nat;
-- Index into Xref table of first cross-reference
Last_Xref : Nat;
-- Index into Xref table of last cross-reference. The value in
-- Last_Xref can be less than the First_Xref value to indicate
-- that no entries are present in the Xref Table.
end record;
package Xref_Entity is new Table.Table (
Table_Component_Type => Xref_Entity_Record,
Table_Index_Type => Nat,
Table_Low_Bound => 1,
Table_Initial => 500,
Table_Increment => 300,
Table_Name => "Xref_Entity");
Array_Index_Reference : constant Character := '*';
Interface_Reference : constant Character := 'I';
-- Some special types of references. In the ALI file itself, these
-- are output as attributes of the entity, not as references, but
-- there is no provision in Xref_Entity_Record for storing multiple
-- such references.
-- The following table records actual cross-references
type Xref_Record is record
File_Num : Sdep_Id;
-- Set to the file dependency number for the cross-reference. Note
-- that if no file entry is present explicitly, this is just a copy
-- of the reference for the current cross-reference section.
Line : Nat;
-- Line number for the reference. This is zero when referencing a
-- predefined entity, but in this case Name is set.
Rtype : Character;
-- Indicates type of reference, using code used in ALI file:
-- r = reference
-- m = modification
-- b = body entity
-- c = completion of private or incomplete type
-- x = type extension
-- i = implicit reference
-- Array_Index_Reference = reference to the index of an array
-- Interface_Reference = reference to an interface implemented
-- by the type
-- See description in lib-xref.ads for further details
Col : Nat;
-- Column number for the reference
Name : Name_Id := No_Name;
-- This is only used when referencing a predefined entity. Currently,
-- this only occurs for array indexes.
-- Note: for instantiation references, Rtype is set to ' ', and Col is
-- set to zero. One or more such entries can follow any other reference.
-- When there is more than one such entry, this is to be read as:
-- e.g. ref1 ref2 ref3
-- ref1 is a reference to an entity that was instantied at ref2.
-- ref2 itself is also the result of an instantiation, that took
-- place at ref3
Imported_Lang : Name_Id := No_Name;
Imported_Name : Name_Id := No_Name;
-- Language and name of imported entity reference
end record;
package Xref is new Table.Table (
Table_Component_Type => Xref_Record,
Table_Index_Type => Nat,
Table_Low_Bound => 1,
Table_Initial => 2000,
Table_Increment => 300,
Table_Name => "Xref");
--------------------------------------
-- Subprograms for Reading ALI File --
--------------------------------------
procedure Initialize_ALI;
-- Initialize the ALI tables. Also resets all switch values to defaults
function Scan_ALI
(F : File_Name_Type;
T : Text_Buffer_Ptr;
Ignore_ED : Boolean;
Err : Boolean;
Read_Xref : Boolean := False;
Read_Lines : String := "";
Ignore_Lines : String := "X";
Ignore_Errors : Boolean := False;
Directly_Scanned : Boolean := False) return ALI_Id;
-- Given the text, T, of an ALI file, F, scan and store the information
-- from the file, and return the Id of the resulting entry in the ALI
-- table. Switch settings may be modified as described above in the
-- switch description settings.
--
-- Ignore_ED is normally False. If set to True, it indicates that
-- all AD/ED (elaboration desirable) indications in the ALI file are
-- to be ignored. This parameter is obsolete now that the -f switch
-- is removed from gnatbind, and should be removed ???
--
-- Err determines the action taken on an incorrectly formatted file.
-- If Err is False, then an error message is output, and the program
-- is terminated. If Err is True, then no error message is output,
-- and No_ALI_Id is returned.
--
-- Ignore_Lines requests that Scan_ALI ignore any lines that start
-- with any given key character. The default value of X causes all
-- Xref lines to be ignored. The corresponding data in the ALI
-- tables will not be filled in this case. It is not possible
-- to ignore U (unit) lines, they are always read.
--
-- Read_Lines requests that Scan_ALI process only lines that start
-- with one of the given characters. The corresponding data in the
-- ALI file for any characters not given in the list will not be
-- set. The default value of the null string indicates that all
-- lines should be read (unless Ignore_Lines is specified). U
-- (unit) lines are always read regardless of the value of this
-- parameter.
--
-- Note: either Ignore_Lines or Read_Lines should be non-null, but not
-- both. If both are provided then only the Read_Lines value is used,
-- and the Ignore_Lines parameter is ignored.
--
-- Read_XREF is set True to read and acquire the cross-reference
-- information. If Read_XREF is set to True, then the effect is to ignore
-- all lines other than U, W, D and X lines and the Ignore_Lines and
-- Read_Lines parameters are ignored (i.e. the use of True for Read_XREF
-- is equivalent to specifying an argument of "UWDX" for Read_Lines.
--
-- Ignore_Errors is normally False. If it is set True, then Scan_ALI
-- will do its best to scan through a file and extract all information
-- it can, even if there are errors. In this case Err is only set if
-- Scan_ALI was completely unable to process the file (e.g. it did not
-- look like an ALI file at all). Ignore_Errors is intended to improve
-- the downward compatibility of new compilers with old tools.
--
-- Directly_Scanned is normally False. If it is set to True, then the
-- units (spec and/or body) corresponding to the ALI file are marked as
-- such. It is used to decide for what units gnatbind should generate
-- the symbols corresponding to 'Version or 'Body_Version in
-- Stand-Alone Libraries.
end ALI;
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