| ------------------------------------------------------------------------------ |
| -- -- |
| -- GNAT COMPILER COMPONENTS -- |
| -- -- |
| -- A L I -- |
| -- -- |
| -- S p e c -- |
| -- -- |
| -- Copyright (C) 1992-2003 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 2, 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 COPYING. If not, write -- |
| -- to the Free Software Foundation, 59 Temple Place - Suite 330, Boston, -- |
| -- MA 02111-1307, USA. -- |
| -- -- |
| -- 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 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 |
| |
| -------------------- |
| -- 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 Restrictions_String is array (All_Restrictions) of Character; |
| -- Type used to hold string from R line |
| |
| type ALIs_Record is record |
| |
| Afile : File_Name_Type; |
| -- Name of ALI file |
| |
| Ofile_Full_Name : Name_Id; |
| -- 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. |
| |
| 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_String; |
| -- Copy of restrictions letters from R line. |
| -- Not set if 'R' appears in Ignore_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 there are 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 |
| |
| 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 pure package |
| |
| Dynamic_Elab : Boolean; |
| -- Set to True if the unit was compiled with dynamic elaboration |
| -- checks (i.e. either -gnatE or pragma Elaboration_Checks (Static) |
| -- was used to compile the unit). |
| |
| Elaborate_Body : Boolean; |
| -- Indicates presence of EB parameter for a package which has a |
| -- pragma Preelaborate_Body. |
| |
| 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 keyowords 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. |
| |
| 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. |
| 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"); |
| |
| -------------- |
| -- 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 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. |
| |
| Restrictions : Restrictions_String := (others => 'n'); |
| -- This array records the cumulative contributions of R lines in all |
| -- ali files. An entry is changed will be set to v if any ali file |
| -- indicates that the restriction is violated, and otherwise will be |
| -- set to r if the restriction is specified by some unit. |
| |
| 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 ED parameter |
| |
| Interface : Boolean := False; |
| -- True if the Unit is an Interface of a Stand-Alole Library |
| |
| 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); |
| |
| ------------------------------------ |
| -- 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 : constant Sdep_Id := No_Sdep_Id + 1; |
| -- Id of first actual entry in table |
| |
| 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 : Name_Id; |
| -- 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 |
| |
| 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. |
| |
| 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"); |
| |
| -- 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 : Pos; |
| -- Line number for the reference |
| |
| 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 |
| -- See description in lib-xref.ads for further details |
| |
| Col : Nat; |
| -- Column number for the reference |
| |
| -- Note: for instantiation references, Rtype is set to ' ', and Col is |
| -- set to zero. One or more such entries can follow any other 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") |
| 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 ED (elaboration desirable) indications in the ALI file are |
| -- to be ignored. |
| -- |
| -- 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 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. |
| |
| end ALI; |
