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diff --git a/gcc-4.2.1/gcc/ada/opt.ads b/gcc-4.2.1/gcc/ada/opt.ads new file mode 100644 index 000000000..91132998d --- /dev/null +++ b/gcc-4.2.1/gcc/ada/opt.ads @@ -0,0 +1,1362 @@ +------------------------------------------------------------------------------ +-- -- +-- GNAT COMPILER COMPONENTS -- +-- -- +-- O P T -- +-- -- +-- S p e c -- +-- -- +-- Copyright (C) 1992-2006, 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, 51 Franklin Street, Fifth Floor, -- +-- Boston, MA 02110-1301, USA. -- +-- -- +-- As a special exception, if other files instantiate generics from this -- +-- unit, or you link this unit with other files to produce an executable, -- +-- this unit does not by itself cause the resulting executable to be -- +-- covered by the GNU General Public License. This exception does not -- +-- however invalidate any other reasons why the executable file might be -- +-- covered by the GNU Public License. -- +-- -- +-- GNAT was originally developed by the GNAT team at New York University. -- +-- Extensive contributions were provided by Ada Core Technologies Inc. -- +-- -- +------------------------------------------------------------------------------ + +-- This package contains global flags set by the initialization routine from +-- the command line and referenced throughout the compiler, the binder, or +-- other GNAT tools. The comments indicate which options are used by which +-- programs (GNAT, GNATBIND, GNATLINK, GNATMAKE, GPRMAKE, etc). + +with Hostparm; use Hostparm; +with Types; use Types; + +with System.WCh_Con; use System.WCh_Con; +with GNAT.Strings; use GNAT.Strings; + +package Opt is + + ---------------------------------------------- + -- Settings of Modes for Current Processing -- + ---------------------------------------------- + + -- The following mode values represent the current state of processing. + -- The values set here are the default values. Unless otherwise noted, + -- the value may be reset in Switch-? with an appropropiate switch. In + -- some cases, the values can also be modified by pragmas, and in the + -- case of some binder variables, Gnatbind.Scan_Bind_Arg may modify + -- the default values. + + Ada_Bind_File : Boolean := True; + -- GNATBIND, GNATLINK + -- Set True if binder file to be generated in Ada rather than C + + type Ada_Version_Type is (Ada_83, Ada_95, Ada_05); + pragma Warnings (Off, Ada_Version_Type); + -- Versions of Ada for Ada_Version below. Note that these are ordered, + -- so that tests like Ada_Version >= Ada_95 are legitimate and useful. + -- The Warnings_Off pragma stops warnings for Ada_Version >= Ada_05, + -- which we want to allow, so that things work OK when Ada_15 is added! + -- This warning is now removed, so this pragma can be removed some time??? + + Ada_Version_Default : Ada_Version_Type := Ada_05; + -- GNAT + -- Default Ada version if no switch given + + Ada_Version : Ada_Version_Type := Ada_Version_Default; + -- GNAT + -- Current Ada version for compiler, as set by configuration pragmas, + -- compiler switches, or implicitly (to Ada_Version_Runtime) when a + -- predefined or internal file is compiled. + + Ada_Version_Explicit : Ada_Version_Type := Ada_Version_Default; + -- GNAT + -- Like Ada_Version, but does not get set implicitly for predefined + -- or internal units, so it reflects the Ada version explicitly set + -- using configuration pragmas or compiler switches (or if neither + -- appears, it remains set to Ada_Version_Default). This is used in + -- the rare cases (notably for pragmas Preelaborate_05 and Pure_05) + -- where in the run-time we want the explicit version set. + + Ada_Version_Runtime : Ada_Version_Type := Ada_05; + -- GNAT + -- Ada version used to compile the runtime. Used to set Ada_Version (but + -- not Ada_Version_Explicit) when compiling predefined or internal units. + + Ada_Final_Suffix : constant String := "final"; + Ada_Final_Name : String_Ptr := new String'("ada" & Ada_Final_Suffix); + -- GNATBIND + -- The name of the procedure that performs the finalization at the end of + -- execution. This variable may be modified by Gnatbind.Scan_Bind_Arg. + + Ada_Init_Suffix : constant String := "init"; + Ada_Init_Name : String_Ptr := new String'("ada" & Ada_Init_Suffix); + -- GNATBIND + -- The name of the procedure that performs initialization at the start + -- of execution. This variable may be modified by Gnatbind.Scan_Bind_Arg. + + Ada_Main_Name_Suffix : constant String := "main"; + -- GNATBIND + -- The suffix for Ada_Main_Name. Defined as a constant here so that it + -- can be referenced in a uniform manner to create either the default + -- value of Ada_Main_Name (declared below), or the non-default name + -- set by Gnatbind.Scan_Bind_Arg. + + Ada_Main_Name : String_Ptr := new String'("ada_" & Ada_Main_Name_Suffix); + -- GNATBIND + -- The name of the Ada package generated by the binder (when in Ada mode). + -- This variable may be modified by Gnatbind.Scan_Bind_Arg. + + Address_Clause_Overlay_Warnings : Boolean := True; + -- GNAT + -- Set False to disable address clause warnings + + Address_Is_Private : Boolean := False; + -- GNAT, GNATBIND + -- Set True if package System has the line "type Address is private;" + + All_Errors_Mode : Boolean := False; + -- GNAT + -- Flag set to force display of multiple errors on a single line and + -- also repeated error messages for references to undefined identifiers + -- and certain other repeated error messages. + + All_Sources : Boolean := False; + -- GNATBIND + -- Set to True to require all source files to be present. This flag is + -- directly modified by gnatmake to affect the shared binder routines. + + Alternate_Main_Name : String_Ptr := null; + -- GNATBIND + -- Set to non null when Bind_Alternate_Main_Name is True. This value + -- is modified as needed by Gnatbind.Scan_Bind_Arg. + + Assertions_Enabled : Boolean := False; + -- GNAT + -- Enable assertions made using pragma Assert + + ASIS_Mode : Boolean := False; + -- GNAT + -- Enable semantic checks and tree transformations that are important + -- for ASIS but that are usually skipped if Operating_Mode is set to + -- Check_Semantics. This flag does not have the corresponding option to set + -- it ON. It is set ON when Tree_Output is set ON, it can also be set ON + -- from the code of GNSA-based tool (a client may need to set ON the + -- Back_Annotate_Rep_Info flag in this case. At the moment this does not + -- make very much sense, because GNSA cannot do back annotation). + + Back_Annotate_Rep_Info : Boolean := False; + -- GNAT + -- If set True, enables back annotation of representation information + -- by gigi, even in -gnatc mode. This is set True by the use of -gnatR + -- (list representation information) or -gnatt (generate tree). It is + -- also set true if certain Unchecked_Conversion instantiations require + -- checking based on annotated values. + + Bind_Alternate_Main_Name : Boolean := False; + -- GNATBIND + -- True if main should be called Alternate_Main_Name.all. + -- This variable may be set to True by Gnatbind.Scan_Bind_Arg. + + Bind_Main_Program : Boolean := True; + -- GNATBIND + -- Set to False if not binding main Ada program + + Bind_For_Library : Boolean := False; + -- GNATBIND + -- Set to True if the binder needs to generate a file designed for + -- building a library. May be set to True by Gnatbind.Scan_Bind_Arg. + + Bind_Only : Boolean := False; + -- GNATMAKE, GPRMAKE + -- Set to True to skip compile and link steps + -- (except when Compile_Only and/or Link_Only are True). + + Blank_Deleted_Lines : Boolean := False; + -- GNAT, GNATPREP + -- Output empty lines for each line of preprocessed input that is deleted + -- in the output, including preprocessor lines starting with a '#'. + + Brief_Output : Boolean := False; + -- GNAT, GNATBIND + -- Force brief error messages to standard error, even if verbose mode is + -- set (so that main error messages go to standard output). + + Build_Bind_And_Link_Full_Project : Boolean := False; + -- GNATMAKE + -- Set to True to build, bind and link all the sources of a project file + -- (switch -B) + + Check_Object_Consistency : Boolean := False; + -- GNATBIND, GNATMAKE + -- Set to True to check whether every object file is consistent with + -- its corresponding ada library information (ALI) file. An object + -- file is inconsistent with the corresponding ALI file if the object + -- file does not exist or if it has an older time stamp than the ALI file. + -- Default above is for GNATBIND. GNATMAKE overrides this default to + -- True (see Make.Initialize) since we normally do need to check source + -- consistencies in gnatmake. + + Check_Only : Boolean := False; + -- GNATBIND + -- Set to True to do checks only, no output of binder file + + Check_Readonly_Files : Boolean := False; + -- GNATMAKE + -- Set to True to check readonly files during the make process + + Check_Source_Files : Boolean := True; + -- GNATBIND, GNATMAKE + -- Set to True to enable consistency checking for any source files that + -- are present (i.e. date must match the date in the library info file). + -- Set to False for object file consistency check only. This flag is + -- directly modified by gnatmake, to affect the shared binder routines. + + Check_Switches : Boolean := False; + -- GNATMAKE, GPRMAKE + -- Set to True to check compiler options during the make process + + Check_Unreferenced : Boolean := False; + -- GNAT + -- Set to True to enable checking for unreferenced entities other + -- than formal parameters (for which see Check_Unreferenced_Formals) + + Check_Unreferenced_Formals : Boolean := False; + -- GNAT + -- Set True to check for unreferenced formals. This is turned on by + -- -gnatwa/wf/wu and turned off by -gnatwA/wF/wU. + + Check_Withs : Boolean := False; + -- GNAT + -- Set to True to enable checking for unused withs, and also the case + -- of withing a package and using none of the entities in the package. + + Comment_Deleted_Lines : Boolean := False; + -- GNATPREP + -- True if source lines removed by the preprocessor should be commented + -- in the output file. + + Compile_Only : Boolean := False; + -- GNATMAKE, GNATCLEAN, GPRMAKE + -- GNATMAKE, GPRMAKE: set to True to skip bind and link steps (except when + -- Bind_Only is True). + -- GNATCLEAN: set to True to only the files produced by the compiler are to + -- be deleted, but not the library files or executable files. + + Config_File : Boolean := True; + -- GNAT + -- Set to False to inhibit reading and processing of gnat.adc file + + Config_File_Names : String_List_Access := null; + -- GNAT + -- Names of configuration pragmas files (given by switches -gnatec) + + Configurable_Run_Time_Mode : Boolean := False; + -- GNAT, GNATBIND + -- Set True if the compiler is operating in configurable run-time mode. + -- This happens if the flag Targparm.Configurable_Run_TimeMode_On_Target + -- is set True, or if pragma No_Run_Time is used. See the spec of Rtsfind + -- for details on the handling of the latter pragma. + + Constant_Condition_Warnings : Boolean := False; + -- GNAT + -- Set to True to activate warnings on constant conditions + + Create_Mapping_File : Boolean := False; + -- GNATMAKE, GPRMAKE + -- Set to True (-C switch) to indicate that the compiler will be invoked + -- with a mapping file (-gnatem compiler switch). + + Debug_Pragmas_Enabled : Boolean := False; + -- GNAT + -- Enable debug statements from pragma Debug + + subtype Debug_Level_Value is Nat range 0 .. 3; + Debugger_Level : Debug_Level_Value := 0; + -- GNATBIND + -- The value given to the -g parameter. The default value for -g with + -- no value is 2. This is usually ignored by GNATBIND, except in the + -- VMS version where it is passed as an argument to __gnat_initialize + -- to trigger the activation of the remote debugging interface. + -- Is this still true ??? + + Debug_Generated_Code : Boolean := False; + -- GNAT + -- Set True (-gnatD switch) to debug generated expanded code instead + -- of the original source code. Causes debugging information to be + -- written with respect to the generated code file that is written. + + Default_Exit_Status : Int := 0; + -- GNATBIND + -- Set the default exit status value. Set by the -Xnnn switch for the + -- binder. + + Default_Stack_Size : Int := -1; + -- GNATBIND + -- Set to default primary stack size in units of bytes. Set by + -- the -dnnn switch for the binder. A value of -1 indicates that no + -- default was set by the binder. + + Default_Sec_Stack_Size : Int := -1; + -- GNATBIND + -- Set to default secondary stack size in units of bytes. Set by + -- the -Dnnn switch for the binder. A value of -1 indicates that no + -- default was set by the binder, and that the default should be the + -- initial value of System.Secondary_Stack.Default_Secondary_Stack_Size. + + Detect_Blocking : Boolean := False; + -- GNAT + -- Set True to force the run time to raise Program_Error if calls to + -- potentially blocking operations are detected from protected actions. + + Display_Compilation_Progress : Boolean := False; + -- GNATMAKE, GPRMAKE + -- Set True (-d switch) to display information on progress while compiling + -- files. Internal flag to be used in conjunction with an IDE (e.g GPS). + + type Distribution_Stub_Mode_Type is + -- GNAT + (No_Stubs, + -- Normal mode, no generation/compilation of distribution stubs + + Generate_Receiver_Stub_Body, + -- The unit being compiled is the RCI body, and the compiler will + -- generate the body for the receiver stubs and compile it. + + Generate_Caller_Stub_Body); + -- The unit being compiled is the RCI spec, and the compiler will + -- generate the body for the caller stubs and compile it. + + Distribution_Stub_Mode : Distribution_Stub_Mode_Type := No_Stubs; + -- GNAT + -- This enumeration variable indicates the five states of distribution + -- annex stub generation/compilation. + + Do_Not_Execute : Boolean := False; + -- GNATMAKE + -- Set to True if no actual compilations should be undertaken. + + Dynamic_Elaboration_Checks : Boolean := False; + -- GNAT + -- Set True for dynamic elaboration checking mode, as set by the -gnatE + -- switch or by the use of pragma Elaboration_Checks (Dynamic). + + Dynamic_Stack_Measurement : Boolean := False; + -- GNATBIND + -- Set True to enable dynamic stack measurement (-u flag for gnatbind) + + Dynamic_Stack_Measurement_Array_Size : Nat := 100; + -- GNATBIND + -- Number of measurements we want to store during dynamic stack analysis. + -- When the buffer is full, non-storable results will be output on the fly. + -- The value is relevant only if Dynamic_Stack_Measurement is set. Set + -- by processing of -u flag for gnatbind. + + Elab_Dependency_Output : Boolean := False; + -- GNATBIND + -- Set to True to output complete list of elaboration constraints + + Elab_Order_Output : Boolean := False; + -- GNATBIND + -- Set to True to output chosen elaboration order + + Elab_Warnings : Boolean := False; + -- GNAT + -- Set to True to generate full elaboration warnings (-gnatwl) + + Enable_Overflow_Checks : Boolean := False; + -- GNAT + -- Set to True if -gnato (enable overflow checks) switch is set, + -- but not -gnatp. + + Exception_Locations_Suppressed : Boolean := False; + -- GNAT + -- This flag is set True if a Suppress_Exception_Locations configuration + -- pragma is currently active. + + type Exception_Mechanism_Type is + -- Determines the handling of exceptions. See Exp_Ch11 for details + -- + (Front_End_Setjmp_Longjmp_Exceptions, + -- Exceptions use setjmp/longjmp generated explicitly by the + -- front end (this includes gigi or other equivalent parts of + -- the code generator). AT END handlers are converted into + -- exception handlers by the front end in this mode. + + Back_End_Exceptions); + -- Exceptions are handled by the back end. The front end simply + -- generates the handlers as they appear in the source, and AT + -- END handlers are left untouched (they are not converted into + -- exception handlers when operating in this mode. + pragma Convention (C, Exception_Mechanism_Type); + + Exception_Mechanism : Exception_Mechanism_Type := + Front_End_Setjmp_Longjmp_Exceptions; + -- GNAT + -- Set to the appropriate value depending on the default as given in + -- system.ads (ZCX_By_Default, GCC_ZCX_Support). + -- The C convention is there to make this variable accessible to gigi. + + Exception_Tracebacks : Boolean := False; + -- GNATBIND + -- Set to True to store tracebacks in exception occurrences (-E) + + Extensions_Allowed : Boolean := False; + -- GNAT + -- Set to True by switch -gnatX if GNAT specific language extensions + -- are allowed. For example, "limited with" is a GNAT extension. + + type External_Casing_Type is ( + As_Is, -- External names cased as they appear in the Ada source + Uppercase, -- External names forced to all uppercase letters + Lowercase); -- External names forced to all lowercase letters + + External_Name_Imp_Casing : External_Casing_Type := Lowercase; + -- GNAT + -- The setting of this flag determines the casing of external names + -- when the name is implicitly derived from an entity name (i.e. either + -- no explicit External_Name or Link_Name argument is used, or, in the + -- case of extended DEC pragmas, the external name is given using an + -- identifier. The As_Is setting is not permitted here (since this would + -- create Ada source programs that were case sensitive). + + External_Name_Exp_Casing : External_Casing_Type := As_Is; + -- GNAT + -- The setting of this flag determines the casing of an external name + -- specified explicitly with a string literal. As_Is means the string + -- literal is used as given with no modification to the casing. If + -- Lowercase or Uppercase is set, then the string is forced to all + -- lowercase or all uppercase letters as appropriate. Note that this + -- setting has no effect if the external name is given using an identifier + -- in the case of extended DEC import/export pragmas (in this case the + -- casing is controlled by External_Name_Imp_Casing), and also has no + -- effect if an explicit Link_Name is supplied (a link name is always + -- used exactly as given). + + External_Unit_Compilation_Allowed : Boolean := False; + -- GNATMAKE + -- When True (set by gnatmake switch -x), allow compilation of sources + -- that are not part of any project file. + + Float_Format : Character := ' '; + -- GNAT + -- A non-blank value indicates that a Float_Format pragma has been + -- processed, in which case this variable is set to 'I' for IEEE or + -- to 'V' for VAX. The setting of 'V' is only possible on OpenVMS + -- versions of GNAT. + + Float_Format_Long : Character := ' '; + -- GNAT + -- A non-blank value indicates that a Long_Float pragma has been + -- processed (this pragma is recognized only in OpenVMS versions + -- of GNAT), in which case this variable is set to D or G for + -- D_Float or G_Float. + + Force_ALI_Tree_File : Boolean := False; + -- GNAT + -- Force generation of ALI file even if errors are encountered. + -- Also forces generation of tree file if -gnatt is also set. + + Force_Checking_Of_Elaboration_Flags : Boolean := False; + -- GNATBIND + -- True if binding with forced checking of the elaboration flags + -- (-F switch set). + + Force_Compilations : Boolean := False; + -- GNATMAKE, GPRMAKE + -- Set to force recompilations even when the objects are up-to-date. + + Full_Path_Name_For_Brief_Errors : Boolean := False; + -- GNAT, GNATMAKE, GNATCLEAN, GPRMAKE + -- When True, in Brief_Output mode, each error message line + -- will start with the full path name of the source. + -- When False, only the file name without directory information + -- is used. + + Full_List : Boolean := False; + -- GNAT + -- Set True to generate full source listing with embedded errors + + function get_gcc_version return Int; + pragma Import (C, get_gcc_version, "get_gcc_version"); + + GCC_Version : constant Nat := get_gcc_version; + -- GNATMAKE + -- Indicates which version of gcc is in use (2 = 2.8.1, 3 = 3.x) + + Global_Discard_Names : Boolean := False; + -- GNAT, GNATBIND + -- Set true if a pragma Discard_Names applies to the current unit + + GNAT_Mode : Boolean := False; + -- GNAT + -- True if compiling in GNAT system mode (-gnatg switch) + + HLO_Active : Boolean := False; + -- GNAT + -- True if High Level Optimizer is activated (-gnatH switch) + + Implementation_Unit_Warnings : Boolean := True; + -- GNAT + -- Set True to active warnings for use of implementation internal units. + -- Can be controlled by use of -gnatwi/-gnatwI. + + Identifier_Character_Set : Character; + -- GNAT + -- This variable indicates the character set to be used for identifiers. + -- The possible settings are: + -- '1' Latin-5 (ISO-8859-1) + -- '2' Latin-5 (ISO-8859-2) + -- '3' Latin-5 (ISO-8859-3) + -- '4' Latin-5 (ISO-8859-4) + -- '5' Latin-5 (ISO-8859-5, Cyrillic) + -- '9' Latin-5 (ISO-8859-9) + -- 'p' PC (US, IBM page 437) + -- '8' PC (European, IBM page 850) + -- 'f' Full upper set (all distinct) + -- 'n' No upper characters (Ada 83 rules) + -- 'w' Latin-1 plus wide characters allowed in identifiers + -- + -- The setting affects the set of letters allowed in identifiers and the + -- upper/lower case equivalences. It does not affect the interpretation of + -- character and string literals, which are always stored using the actual + -- coding in the source program. This variable is initialized to the + -- default value appropriate to the system (in Osint.Initialize), and then + -- reset if a command line switch is used to change the setting. + + Ineffective_Inline_Warnings : Boolean := False; + -- GNAT + -- Set True to activate warnings if front-end inlining (-gnatN) is not + -- able to actually inline a particular call (or all calls). Can be + -- controlled by use of -gnatwp/-gnatwP. + + Init_Or_Norm_Scalars : Boolean := False; + -- GNAT, GANTBIND + -- Set True if a pragma Initialize_Scalars applies to the current unit. + -- Also set True if a pragma Normalize_Scalars applies. + + Initialize_Scalars : Boolean := False; + -- GNAT + -- Set True if a pragma Initialize_Scalars applies to the current unit. + -- Note that Init_Or_Norm_Scalars is also set to True if this is True. + + Initialize_Scalars_Mode1 : Character := 'I'; + Initialize_Scalars_Mode2 : Character := 'N'; + -- GNATBIND + -- Set to two characters from -S switch (IN/LO/HI/EV/xx). The default + -- is IN (invalid values), used if no -S switch is used. + + Inline_Active : Boolean := False; + -- GNAT + -- Set True to activate pragma Inline processing across modules. Default + -- for now is not to inline across module boundaries. + + Interface_Library_Unit : Boolean := False; + -- GNATBIND + -- Set to True to indicate that at least one ALI file is an interface ALI: + -- then elaboration flag checks are to be generated in the binder + -- generated file. + + Follow_Links : Boolean := False; + -- GNATMAKE + -- Set to True (-eL) to process the project files in trusted mode + + Front_End_Inlining : Boolean := False; + -- GNAT + -- Set True to activate inlining by front-end expansion + + Inline_Processing_Required : Boolean := False; + -- GNAT + -- Set True if inline processing is required. Inline processing is + -- required if an active Inline pragma is processed. The flag is set + -- for a pragma Inline or Inline_Always that is actually active. + + In_Place_Mode : Boolean := False; + -- GNATMAKE + -- Set True to store ALI and object files in place ie in the object + -- directory if these files already exist or in the source directory + -- if not. + + Keep_Going : Boolean := False; + -- GNATMAKE, GPRMAKE + -- When True signals to ignore compilation errors and keep + -- processing sources until there is no more work. + + Keep_Temporary_Files : Boolean := False; + -- GNATCMD + -- When True the temporary files created by the GNAT driver are not + -- deleted. Set by switch -dn or qualifier /KEEP_TEMPORARY_FILES. + + Link_Only : Boolean := False; + -- GNATMAKE, GPRMAKE + -- Set to True to skip compile and bind steps + -- (except when Bind_Only is set to True). + + List_Restrictions : Boolean := False; + -- GNATBIND + -- Set to True to list restrictions pragmas that could apply to partition + + List_Units : Boolean := False; + -- GNAT + -- List units in the active library for a compilation (-gnatu switch) + + List_Dependencies : Boolean := False; + -- GNATMAKE + -- When True gnatmake verifies that the objects are up to date and + -- outputs the list of object dependencies (-M switch). + -- Output depends if -a switch is used or not. + -- This list can be used directly in a Makefile. + + List_Representation_Info : Int range 0 .. 3 := 0; + -- GNAT + -- Set non-zero by -gnatR switch to list representation information. + -- The settings are as follows: + -- + -- 0 = no listing of representation information (default as above) + -- 1 = list rep info for user defined record and array types + -- 2 = list rep info for all user defined types and objects + -- 3 = like 2, but variable fields are decoded symbolically + + List_Representation_Info_To_File : Boolean := False; + -- GNAT + -- Set true by -gnatRs switch. Causes information from -gnatR/1/2/3 + -- to be written to file.rep (where file is the name of the source + -- file) instead of stdout. For example, if file x.adb is compiled + -- using -gnatR2s then representation info is written to x.adb.ref. + + List_Representation_Info_Mechanisms : Boolean := False; + -- GNAT + -- Set true by -gnatRm switch. Causes information on mechanisms to + -- be included in the representation output information. + + List_Preprocessing_Symbols : Boolean := False; + -- GNAT, GNATPREP + -- Set to True if symbols for preprocessing a source are to be listed + -- before preprocessing occurs. Set to True by switch -s of gnatprep + -- or -s in preprocessing data file for the compiler. + + type Creat_Repinfo_File_Proc is access procedure (Src : File_Name_Type); + type Write_Repinfo_Line_Proc is access procedure (Info : String); + type Close_Repinfo_File_Proc is access procedure; + -- Types used for procedure addresses below + + Creat_Repinfo_File_Access : Creat_Repinfo_File_Proc := null; + Write_Repinfo_Line_Access : Write_Repinfo_Line_Proc := null; + Close_Repinfo_File_Access : Close_Repinfo_File_Proc := null; + -- GNAT + -- These three locations are left null when operating in non-compiler + -- (e.g. ASIS mode), but when operating in compiler mode, they are + -- set to point to the three corresponding procedures in Osint. The + -- reason for this slightly strange interface is to prevent Repinfo + -- from dragging in Osint in ASIS mode, which would include a lot of + -- unwanted units in the ASIS build. + + Locking_Policy : Character := ' '; + -- GNAT, GNATBIND + -- Set to ' ' for the default case (no locking policy specified). + -- Reset to first character (uppercase) of locking policy name if a + -- valid pragma Locking_Policy is encountered. + + Locking_Policy_Sloc : Source_Ptr := No_Location; + -- GNAT, GNATBIND + -- Remember location of previous Locking_Policy pragma. This is used + -- for inconsistency error messages. A value of System_Location is + -- used if the policy is set in package System. + + Look_In_Primary_Dir : Boolean := True; + -- GNAT, GNATBIND, GNATMAKE, GNATCLEAN + -- Set to False if a -I- was present on the command line. + -- When True we are allowed to look in the primary directory to locate + -- other source or library files. + + Make_Steps : Boolean := False; + -- GNATMAKE + -- Set to True when either Compile_Only, Bind_Only or Link_Only is + -- set to True. + + Main_Index : Int := 0; + -- GNATMAKE + -- This is set to non-zero by gnatmake switch -eInnn to indicate that + -- the main program is the nnn unit in a multi-unit source file. + + Mapping_File_Name : String_Ptr := null; + -- GNAT + -- File name of mapping between unit names, file names and path names. + -- (given by switch -gnatem) + + Maximum_Errors : Int := 9999; + -- GNAT, GNATBIND + -- Maximum default number of errors before compilation is terminated. + -- Can be overridden using -gnatm (GNAT) or -m (GNATBIND) switch. + + Maximum_File_Name_Length : Int; + -- GNAT, GNATBIND + -- Maximum number of characters allowed in a file name, not counting the + -- extension, as set by the appropriate switch. If no switch is given, + -- then this value is initialized by Osint to the appropriate value. + + Maximum_Processes : Positive := 1; + -- GNATMAKE, GPRMAKE + -- Maximum number of processes that should be spawned to carry out + -- compilations. + + Minimal_Recompilation : Boolean := False; + -- GNATMAKE + -- Set to True if minimal recompilation mode requested + + Multiple_Unit_Index : Int; + -- GNAT + -- This is set non-zero if the current unit is being compiled in multiple + -- unit per file mode, meaning that the current unit is selected from the + -- sequence of units in the current source file, using the value stored + -- in this variable (e.g. 2 = select second unit in file). A value of + -- zero indicates that we are in normal (one unit per file) mode. + + No_Main_Subprogram : Boolean := False; + -- GNATMAKE, GNATBIND + -- Set to True if compilation/binding of a program without main + -- subprogram requested. + + No_Run_Time_Mode : Boolean := False; + -- GNAT, GNATBIND + -- This flag is set True if a No_Run_Time pragma is encountered. See + -- spec of Rtsfind for a full description of handling of this pragma. + + No_Stdinc : Boolean := False; + -- GNAT, GNATBIND, GNATMAKE, GNATFIND, GNATXREF + -- Set to True if no default source search dirs added to search list + + No_Stdlib : Boolean := False; + -- GNATMAKE, GNATBIND, GNATFIND, GNATXREF + -- Set to True if no default library search dirs added to search list + + No_Strict_Aliasing : Boolean := False; + -- GNAT + -- Set True if pragma No_Strict_Aliasing with no parameters encountered + + Normalize_Scalars : Boolean := False; + -- GNAT, GNATBIND + -- Set True if a pragma Normalize_Scalars applies to the current unit. + -- Note that Init_Or_Norm_Scalars is also set to True if this is True. + + Object_Directory_Present : Boolean := False; + -- GNATMAKE + -- Set to True when an object directory is specified with option -D + + type Operating_Mode_Type is (Check_Syntax, Check_Semantics, Generate_Code); + Operating_Mode : Operating_Mode_Type := Generate_Code; + -- GNAT + -- Indicates the operating mode of the compiler. The default is generate + -- code, which runs the parser, semantics and backend. Switches can be + -- used to set syntax checking only mode, or syntax and semantics checking + -- only mode. Operating_Mode can also be modified as a result of detecting + -- errors during the compilation process. In particular if any serious + -- error is detected then this flag is reset from Generate_Code to + -- Check_Semantics after generating an error message. + + Original_Operating_Mode : Operating_Mode_Type := Generate_Code; + -- GNAT + -- Indicates the original operating mode of the compiler as set by + -- compiler options. This is identical to Operating_Mode except that + -- this is not affected by errors. + + Optimization_Level : Int; + pragma Import (C, Optimization_Level, "optimize"); + -- This constant reflects the optimization level (0,1,2 for -O0,-O1,-O2) + + Output_File_Name_Present : Boolean := False; + -- GNATBIND, GNAT, GNATMAKE, GPRMAKE + -- Set to True when the output C file name is given with option -o + -- for GNATBIND, when the object file name is given with option + -- -gnatO for GNAT or when the executable is given with option -o + -- for GNATMAKE or GPRMAKE. + + Output_Linker_Option_List : Boolean := False; + -- GNATBIND + -- True if output of list of linker options is requested (-K switch set) + + Output_Object_List : Boolean := False; + -- GNATBIND + -- True if output of list of objects is requested (-O switch set) + + Persistent_BSS_Mode : Boolean := False; + -- GNAT + -- True if a Persistent_BSS configuration pragma is in effect, causing + -- potentially persistent data to be placed in the persistent_bss section. + + Pessimistic_Elab_Order : Boolean := False; + -- GNATBIND + -- True if pessimistic elaboration order is to be chosen (-p switch set) + + Polling_Required : Boolean := False; + -- GNAT + -- Set to True if polling for asynchronous abort is enabled by using + -- the -gnatP option for GNAT. + + Preprocessing_Data_File : String_Ptr := null; + -- GNAT + -- Set by switch -gnatep=. The file name of the prepocessing data file. + + Print_Generated_Code : Boolean := False; + -- GNAT + -- Set to True to enable output of generated code in source form. This + -- flag is set by the -gnatG switch. + + Print_Standard : Boolean := False; + -- GNAT + -- Set to true to enable printing of package standard in source form. + -- This flag is set by the -gnatS switch + + Propagate_Exceptions : Boolean := False; + -- GNAT + -- Indicates if subprogram descriptor exception tables should be + -- built for imported subprograms. Set True if a Propagate_Exceptions + -- pragma applies to the extended main unit. + + type Usage is (Unknown, Not_In_Use, In_Use); + Project_File_In_Use : Usage := Unknown; + -- GNAT + -- Indicates if a project file is used or not. + -- Set to In_Use by the first SFNP pragma. + + Queuing_Policy : Character := ' '; + -- GNAT, GNATBIND + -- Set to ' ' for the default case (no queuing policy specified). + -- Reset to first character (uppercase) of locking policy name if a valid + -- Queuing_Policy pragma is encountered. + + Queuing_Policy_Sloc : Source_Ptr := No_Location; + -- GNAT, GNATBIND + -- Remember location of previous Queuing_Policy pragma. This is used + -- for inconsistency error messages. A value of System_Location is + -- used if the policy is set in package System. + + Quiet_Output : Boolean := False; + -- GNATMAKE, GNATCLEAN, GPRMAKE + -- Set to True if the tool should not have any output if there are no + -- errors or warnings. + + Replace_In_Comments : Boolean := False; + -- GNATPREP + -- Set to True if -C switch used + + RTS_Lib_Path_Name : String_Ptr := null; + RTS_Src_Path_Name : String_Ptr := null; + -- GNAT + -- Set to the "adalib" and "adainclude" directories of the run time + -- specified by --RTS=. + + RTS_Switch : Boolean := False; + -- GNAT, GNATMAKE, GNATBIND, GNATLS, GNATFIND, GNATXREF + -- Set to True when the --RTS switch is set + + Run_Path_Option : Boolean := True; + -- GNATMAKE, GNATLINK + -- Set to False when no run_path_option should be issued to the linker + + Search_Directory_Present : Boolean := False; + -- GNAT + -- Set to True when argument is -I. Reset to False when next argument, + -- a search directory path is taken into account. Note that this is + -- quite different from other switches in this section in that it is + -- only set in a transitory manner as a result of scanning a -I switch + -- with no file name, and if set, is an indication that the next argument + -- is to be treated as a file name. + + Sec_Stack_Used : Boolean := False; + -- GNAT, GBATBIND + -- Set True if generated code uses the System.Secondary_Stack package. + -- For the binder, set if any unit uses the secondary stack package. + + Setup_Projects : Boolean := False; + -- GNAT DRIVER + -- Set to True for GNAT SETUP: the Project Manager creates non existing + -- object, library and exec directories. + + Shared_Libgnat : Boolean; + -- GNATBIND + -- Set to True if a shared libgnat is requested by using the -shared + -- option for GNATBIND and to False when using the -static option. The + -- value of this flag is set by Gnatbind.Scan_Bind_Arg. + + Stack_Checking_Enabled : Boolean; + -- GNAT + -- Set to indicate if -fstack-check switch is set for the compilation. True + -- means that the switch is set, so that stack checking is enabled. False + -- means that the switch is not set (no stack checking). This value is + -- obtained from the external imported value flag_stack_check in the gcc + -- backend (see Frontend) and may be referenced throughout the compilation + -- phases. + + Style_Check : Boolean := False; + -- GNAT + -- Set True to perform style checks. Activates checks carried out + -- in package Style (see body of this package for details of checks) + -- This flag is set True by either the -gnatg or -gnaty switches. + + System_Extend_Pragma_Arg : Node_Id := Empty; + -- GNAT + -- Set non-empty if and only if a correct Extend_System pragma was present + -- in which case it points to the argument of the pragma, and the name can + -- be located as Chars (Expression (System_Extend_Pragma_Arg)). + + System_Extend_Unit : Node_Id := Empty; + -- GNAT + -- This is set to Empty if GNAT_Mode is set, since pragma Extend_System + -- is never appropriate in GNAT_Mode (and causes troubles, including + -- bogus circularities, if we try to compile the run-time library with + -- a System extension). If GNAT_Mode is not set, then System_Extend_Unit + -- is a copy of the value set in System_Extend_Pragma_Arg. + + Subunits_Missing : Boolean := False; + -- GNAT + -- This flag is set true if missing subunits are detected with code + -- generation active. This causes code generation to be skipped. + + Suppress_Checks : Boolean := False; + -- GNAT + -- Set to True if -gnatp (suppress all checks) switch present. + + Suppress_Options : Suppress_Array; + -- GNAT + -- Flags set True to suppress corresponding check, i.e. add an implicit + -- pragma Suppress at the outer level of each unit compiled. Note that + -- these suppress actions can be overridden by the use of the Unsuppress + -- pragma. This variable is initialized by Osint.Initialize. + + Suppress_Back_Annotation : Boolean := False; + -- GNAT + -- This flag is set True if back annotation of representation information + -- is to be suppressed. This is set if neither -gnatt or -gnatR0-3 is set. + -- This avoids unnecessary time being spent on back annotation. + + Table_Factor : Int := 1; + -- GNAT + -- Factor by which all initial table sizes set in Alloc are multiplied. + -- Used in Table to calculate initial table sizes (the initial table size + -- is the value in Alloc, used as the Table_Initial parameter value, + -- multiplied by the factor given here. The default value is used if no + -- -gnatT switch appears. + + Task_Dispatching_Policy : Character := ' '; + -- GNAT, GNATBIND + -- Set to ' ' for the default case (no task dispatching policy specified). + -- Reset to first character (uppercase) of task dispatching policy name + -- if a valid Task_Dispatching_Policy pragma is encountered. + + Task_Dispatching_Policy_Sloc : Source_Ptr := No_Location; + -- GNAT, GNATBIND + -- Remember location of previous Task_Dispatching_Policy pragma. This is + -- used for inconsistency error messages. A value of System_Location is + -- used if the policy is set in package System. + + Tasking_Used : Boolean := False; + -- Set True if any tasking construct is encountered. Used to activate the + -- output of the Q, L and T lines in ALI files. + + Time_Slice_Set : Boolean := False; + -- GNATBIND + -- Set True if a pragma Time_Slice is processed in the main unit, or + -- if the -gnatTnn switch is present to set a time slice value. + + Time_Slice_Value : Nat; + -- GNATBIND + -- Time slice value. Valid only if Time_Slice_Set is True, i.e. if + -- Time_Slice pragma has been processed. Set to the time slice value in + -- microseconds. Negative values are stored as zero, and the value is not + -- larger than 1_000_000_000 (1000 seconds). Values larger than this are + -- reset to this maximum. This can also be set with the -gnatTnn switch. + + Tolerate_Consistency_Errors : Boolean := False; + -- GNATBIND + -- Tolerate time stamp and other consistency errors. If this flag is set to + -- True (-t), then inconsistencies result in warnings rather than errors. + + Tree_Output : Boolean := False; + -- GNAT + -- Set to True (-gnatt) to generate output tree file + + Try_Semantics : Boolean := False; + -- GNAT + -- Flag set to force attempt at semantic analysis, even if parser errors + -- occur. This will probably cause blowups at this stage in the game. On + -- the other hand, most such blowups will be caught cleanly and simply + -- say compilation abandoned. This flag is set to True by -gnatq or -gnatQ. + + Undefined_Symbols_Are_False : Boolean := False; + -- GNAT, GNATPREP + -- Set to True by switch -u of gnatprep or -u in the preprocessing data + -- file for the compiler. Indicates that while preprocessing sources, + -- symbols that are not defined have the value FALSE. + + Unique_Error_Tag : Boolean := Tag_Errors; + -- GNAT + -- Indicates if error messages are to be prefixed by the string error: + -- Initialized from Tag_Errors, can be forced on with the -gnatU switch. + + Universal_Addressing_On_AAMP : Boolean := False; + -- GNAAMP + -- Indicates if library-level objects should be accessed and updated using + -- universal addressing instructions on the AAMP architecture. This flag is + -- set to True when pragma Universal_Data is given as a configuration + -- pragma. + + Unreserve_All_Interrupts : Boolean := False; + -- GNAT, GNATBIND + -- Normally set False, set True if a valid Unreserve_All_Interrupts pragma + -- appears anywhere in the main unit for GNAT, or if any ALI file has the + -- corresponding attribute set in GNATBIND. + + Upper_Half_Encoding : Boolean := False; + -- GNAT + -- Normally set False, indicating that upper half ASCII characters are + -- used in the normal way to represent themselves. If the wide character + -- encoding method uses the upper bit for this encoding, then this flag is + -- set True, and upper half characters in the source indicate the start of + -- a wide character sequence. + + Usage_Requested : Boolean := False; + -- GNAT, GNATBIND, GNATMAKE + -- Set to True if -h (-gnath for the compiler) switch encountered + -- requesting usage information + + Use_Pragma_Linker_Constructor : Boolean := False; + -- GNATBIND + -- True if pragma Linker_Constructor applies to adainit + + Use_VADS_Size : Boolean := False; + -- GNAT + -- Set to True if a valid pragma Use_VADS_Size is processed + + Validity_Checks_On : Boolean := True; + -- GNAT + -- This flag determines if validity checking is on or off. The initial + -- state is on, and the required default validity checks are active. The + -- actual set of checks that is performed if Validity_Checks_On is set is + -- defined by the switches in package Validsw. The Validity_Checks_On flag + -- is controlled by pragma Validity_Checks (On | Off), and also some + -- generated compiler code (typically code that has to do with validity + -- check generation) is compiled with this flag set to False. This flag is + -- set to False by the -gnatp switch. + + Verbose_Mode : Boolean := False; + -- GNAT, GNATBIND, GNATMAKE, GNATLINK, GNATLS, GNATNAME, GNATCLEAN, + -- GPRMAKE + -- Set to True to get verbose mode (full error message text and location + -- information sent to standard output, also header, copyright and summary) + + type Verbosity_Level_Type is (None, Low, Medium, High); + Verbosity_Level : Verbosity_Level_Type := High; + -- GNATMAKE, GPRMAKE + -- Modified by gnatmake or gprmake switches -v, -vl, -vm, -vh. Indicates + -- the level of verbosity of informational messages: + -- + -- In Low Verbosity, the reasons why a source is recompiled, the name + -- of the executable and the reason it must be rebuilt is output. + -- + -- In Medium Verbosity, additional lines are output for each ALI file + -- that is checked. + -- + -- In High Verbosity, additional lines are output when the ALI file + -- is part of an Ada library, is read-only or is part of the runtime. + + Warn_On_Ada_2005_Compatibility : Boolean := True; + -- GNAT + -- Set to True to active all warnings on Ada 2005 compatibility issues, + -- including warnings on Ada 2005 obsolescent features used in Ada 2005 + -- mode. Set False by -gnatwY. + + Warn_On_Bad_Fixed_Value : Boolean := False; + -- GNAT + -- Set to True to generate warnings for static fixed-point expression + -- values that are not an exact multiple of the small value of the type. + + Warn_On_Constant : Boolean := False; + -- GNAT + -- Set to True to generate warnings for variables that could be declared + -- as constants. Modified by use of -gnatwk/K. + + Warn_On_Dereference : Boolean := False; + -- GNAT + -- Set to True to generate warnings for implicit dereferences for array + -- indexing and record component access. Modified by use of -gnatwd/D. + + Warn_On_Export_Import : Boolean := True; + -- GNAT + -- Set to True to generate warnings for suspicious use of export or + -- import pragmas. Modified by use of -gnatwx/X. + + Warn_On_Hiding : Boolean := False; + -- GNAT + -- Set to True to generate warnings if a declared entity hides another + -- entity. The default is that this warning is suppressed. + + Warn_On_Modified_Unread : Boolean := False; + -- GNAT + -- Set to True to generate warnings if a variable is assigned but is never + -- read. The default is that this warning is suppressed. + + Warn_On_No_Value_Assigned : Boolean := True; + -- GNAT + -- Set to True to generate warnings if no value is ever assigned to a + -- variable that is at least partially uninitialized. Set to false to + -- suppress such warnings. The default is that such warnings are enabled. + + Warn_On_Obsolescent_Feature : Boolean := False; + -- GNAT + -- Set to True to generate warnings on use of any feature in Annex or if a + -- subprogram is called for which a pragma Obsolescent applies. + + Warn_On_Redundant_Constructs : Boolean := False; + -- GNAT + -- Set to True to generate warnings for redundant constructs (e.g. useless + -- assignments/conversions). The default is that this warning is disabled. + + Warn_On_Unchecked_Conversion : Boolean := True; + -- GNAT + -- Set to True to generate warnings for unchecked conversions that may have + -- non-portable semantics (e.g. because sizes of types differ). The default + -- is that this warning is enabled. + + Warn_On_Unrecognized_Pragma : Boolean := True; + -- GNAT + -- Set to True to generate warnings for unrecognized pragmas. The default + -- is that this warning is enabled. + + type Warning_Mode_Type is (Suppress, Normal, Treat_As_Error); + Warning_Mode : Warning_Mode_Type := Normal; + -- GNAT, GNATBIND + -- Controls treatment of warning messages. If set to Suppress, warning + -- messages are not generated at all. In Normal mode, they are generated + -- but do not count as errors. In Treat_As_Error mode, warning messages + -- are generated and are treated as errors. + + Wide_Character_Encoding_Method : WC_Encoding_Method := WCEM_Brackets; + -- GNAT + -- Method used for encoding wide characters in the source program. See + -- description of type in unit System.WCh_Con for a list of the methods + -- that are currently supported. Note that brackets notation is always + -- recognized in source programs regardless of the setting of this + -- variable. The default setting causes only the brackets notation to be + -- recognized. If this is the main unit, this setting also controls the + -- output of the W=? parameter in the ALI file, which is used to provide + -- the default for Wide_Text_IO files. + + Xref_Active : Boolean := True; + -- GNAT + -- Set if cross-referencing is enabled (i.e. xref info in ALI files) + + ---------------------------- + -- Configuration Settings -- + ---------------------------- + + -- These are settings that are used to establish the mode at the start of + -- each unit. The values defined below can be affected either by command + -- line switches, or by the use of appropriate configuration pragmas in the + -- gnat.adc file. + + Ada_Version_Config : Ada_Version_Type; + -- GNAT + -- This is the value of the configuration switch for the Ada 83 mode, as + -- set by the command line switches -gnat83/95/05, and possibly modified by + -- the use of configuration pragmas Ada_83/Ada95/Ada05. This switch is used + -- to set the initial value for Ada_Version mode at the start of analysis + -- of a unit. Note however, that the setting of this flag is ignored for + -- internal and predefined units (which are always compiled in the most up + -- to date version of Ada). + + Ada_Version_Explicit_Config : Ada_Version_Type; + -- GNAT + -- This is set in the same manner as Ada_Version_Config. The difference is + -- that the setting of this flag is not ignored for internal and predefined + -- units, which for some purposes do indeed access this value, regardless + -- of the fact that they are compiled the the most up to date ada version). + + Assertions_Enabled_Config : Boolean; + -- GNAT + -- This is the value of the configuration switch for assertions enabled + -- mode, as possibly set by the command line switch -gnata, and possibly + -- modified by the use of the configuration pragma Assertion_Policy. + + Debug_Pragmas_Enabled_Config : Boolean; + -- GNAT + -- This is the value of the configuration switch for debug pragmas enabled + -- mode, as possibly set by the command line switch -gnata and possibly + -- modified by the use of the configuration pragma Debug_Policy. + + Dynamic_Elaboration_Checks_Config : Boolean := False; + -- GNAT + -- Set True for dynamic elaboration checking mode, as set by the -gnatE + -- switch or by the use of pragma Elaboration_Checking (Dynamic). + + Exception_Locations_Suppressed_Config : Boolean := False; + -- GNAT + -- Set True by use of the configuration pragma Suppress_Exception_Messages + + Extensions_Allowed_Config : Boolean; + -- GNAT + -- This is the flag that indicates whether extensions are allowed. It can + -- be set True either by use of the -gnatX switch, or by use of the + -- configuration pragma Extensions_Allowed (On). It is always set to True + -- for internal GNAT units, since extensions are always permitted in such + -- units. + + External_Name_Exp_Casing_Config : External_Casing_Type; + -- GNAT + -- This is the value of the configuration switch that controls casing of + -- external symbols for which an explicit external name is given. It can be + -- set to Uppercase by the command line switch -gnatF, and further modified + -- by the use of the configuration pragma External_Name_Casing in the + -- gnat.adc file. This flag is used to set the initial value for + -- External_Name_Exp_Casing at the start of analyzing each unit. Note + -- however that the setting of this flag is ignored for internal and + -- predefined units (which are always compiled with As_Is mode). + + External_Name_Imp_Casing_Config : External_Casing_Type; + -- GNAT + -- This is the value of the configuration switch that controls casing of + -- external symbols where the external name is implicitly given. It can be + -- set to Uppercase by the command line switch -gnatF, and further modified + -- by the use of the configuration pragma External_Name_Casing in the + -- gnat.adc file. This flag is used to set the initial value for + -- External_Name_Imp_Casing at the start of analyzing each unit. Note + -- however that the setting of this flag is ignored for internal and + -- predefined units (which are always compiled with Lowercase mode). + + Persistent_BSS_Mode_Config : Boolean; + -- GNAT + -- This is the value of the configuration switch that controls whether + -- potentially persistent data is to be placed in the persistent_bss + -- section. It can be set True by use of the pragma Persistent_BSS. + -- This flag is used to set the initial value of Persistent_BSS_Mode + -- at the start of each compilation unit, except that it is always + -- set False for predefined units. + + Polling_Required_Config : Boolean; + -- GNAT + -- This is the value of the configuration switch that controls polling + -- mode. It can be set True by the command line switch -gnatP, and then + -- further modified by the use of pragma Polling in the gnat.adc file. This + -- flag is used to set the initial value for Polling_Required at the start + -- of analyzing each unit. + + Use_VADS_Size_Config : Boolean; + -- GNAT + -- This is the value of the configuration switch that controls the use of + -- VADS_Size instead of Size whereever the attribute Size is used. It can + -- be set True by the use of the pragma Use_VADS_Size in the gnat.adc file. + -- This flag is used to set the initial value for Use_VADS_Size at the + -- start of analyzing each unit. Note however that the setting of this flag + -- is ignored for internal and predefined units (which are always compiled + -- with the standard Size semantics). + + type Config_Switches_Type is private; + -- Type used to save values of the switches set from Config values + + procedure Save_Opt_Config_Switches (Save : out Config_Switches_Type); + -- This procedure saves the current values of the switches which are + -- initialized from the above Config values, and then resets these switches + -- according to the Config value settings. + + procedure Set_Opt_Config_Switches + (Internal_Unit : Boolean; + Main_Unit : Boolean); + -- This procedure sets the switches to the appropriate initial values. The + -- parameter Internal_Unit is True for an internal or predefined unit, and + -- affects the way the switches are set (see above). Main_Unit is true if + -- switches are being set for the main unit (this affects setting of the + -- assert/debug pragm switches, which are normally set false by default for + -- an internal unit, except when the internal unit is the main unit, in + -- which case we use the command line settings). + + procedure Restore_Opt_Config_Switches (Save : Config_Switches_Type); + -- This procedure restores a set of switch values previously saved by a + -- call to Save_Opt_Switches. + + procedure Register_Opt_Config_Switches; + -- This procedure is called after processing the gnat.adc file to record + -- the values of the Config switches, as possibly modified by the use of + -- command line switches and configuration pragmas. + + ------------------------ + -- Other Global Flags -- + ------------------------ + + Expander_Active : Boolean := False; + -- A flag that indicates if expansion is active (True) or deactivated + -- (False). When expansion is deactivated all calls to expander routines + -- have no effect. Note that the initial setting of False is merely to + -- prevent saving of an undefined value for an initial call to the + -- Expander_Mode_Save_And_Set procedure. For more information on the use of + -- this flag, see package Expander. Indeed this flag might more logically + -- be in the spec of Expander, but it is referenced by Errout, and it + -- really seems wrong for Errout to depend on Expander. + + ----------------------- + -- Tree I/O Routines -- + ----------------------- + + procedure Tree_Read; + -- Reads switch settings from current tree file using Tree_Read + + procedure Tree_Write; + -- Writes out switch settings to current tree file using Tree_Write + + -------------------------- + -- ASIS Version Control -- + -------------------------- + + -- These two variables (Tree_Version_String and Tree_ASIS_Version_Number) + -- are supposed to be used in the GNAT/ASIS version check performed in + -- the ASIS code (this package is also a part of the ASIS implementation). + -- They are set by Tree_Read procedure, so they represent the version + -- number (and the version string) of the compiler which has created the + -- tree, and they are supposed to be compared with the corresponding values + -- from the Gnatvsn package which is a part of ASIS implementation. + + Tree_Version_String : String_Access; + -- Used to store the compiler version string read from a tree file to check + -- if it is from the same date as stored in the version string in Gnatvsn. + -- We require that ASIS Pro can be used only with GNAT Pro, but we allow + -- non-Pro ASIS and ASIS-based tools to be used with any version of the + -- GNAT compiler. Therefore, we need the possibility to compare the dates + -- of the corresponding source sets, using version strings that may be + -- of different lengths. + + Tree_ASIS_Version_Number : Int; + -- Used to store the ASIS version number read from a tree file to check if + -- it is the same as stored in the ASIS version number in Gnatvsn. + +private + + -- The following type is used to save and restore settings of switches in + -- Opt that represent the configuration (i.e. result of config pragmas). + + -- Note that Ada_Version_Explicit is not included, since this is a sticky + -- flag that once set does not get reset, since the whole idea of this flag + -- is to record the setting for the main unit. + + type Config_Switches_Type is record + Ada_Version : Ada_Version_Type; + Ada_Version_Explicit : Ada_Version_Type; + Assertions_Enabled : Boolean; + Debug_Pragmas_Enabled : Boolean; + Dynamic_Elaboration_Checks : Boolean; + Exception_Locations_Suppressed : Boolean; + Extensions_Allowed : Boolean; + External_Name_Exp_Casing : External_Casing_Type; + External_Name_Imp_Casing : External_Casing_Type; + Persistent_BSS_Mode : Boolean; + Polling_Required : Boolean; + Use_VADS_Size : Boolean; + end record; + +end Opt; |