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diff --git a/gcc-4.4.0/gcc/ada/ali.ads b/gcc-4.4.0/gcc/ada/ali.ads new file mode 100644 index 000000000..c4be2ef9e --- /dev/null +++ b/gcc-4.4.0/gcc/ada/ali.ads @@ -0,0 +1,992 @@ +------------------------------------------------------------------------------ +-- -- +-- GNAT COMPILER COMPONENTS -- +-- -- +-- A L I -- +-- -- +-- S p e c -- +-- -- +-- Copyright (C) 1992-2008, 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 indicate 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. + + 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. + + 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. + + Float_Format : Character; + -- Set to float format (set to I if no float-format given). 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. + + Unit_Exception_Table : Boolean; + -- Set to True if unit exception table pointer generated. 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 + + 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 entity. + + 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. + + 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 + + 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 + + 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. + + Float_Format_Specified : Character := ' '; + -- Set to blank by Initialize_ALI. Set to appropriate float format + -- character (V or I, see Opt.Float_Format) if an ali file that + -- is read contains an F line setting the floating point format. + + 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. + + 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. + + 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 + 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; + + -- Declare the Linker_Options Table + + -- 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"); + + ------------------------------------------- + -- 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 + + 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 + + -- 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 + + Lib : Boolean; + -- True if entity is library level 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 + 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) 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 given then only the Read_Lines + -- value is processed, and the Ignore_Lines parameter is + -- not processed. + -- + -- 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. + +end ALI; |