Mercurial > hg > CbC > CbC_gcc
diff gcc/ada/restrict.ads @ 111:04ced10e8804
gcc 7
| author | kono |
|---|---|
| date | Fri, 27 Oct 2017 22:46:09 +0900 |
| parents | |
| children | 84e7813d76e9 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/gcc/ada/restrict.ads Fri Oct 27 22:46:09 2017 +0900 @@ -0,0 +1,591 @@ +------------------------------------------------------------------------------ +-- -- +-- GNAT COMPILER COMPONENTS -- +-- -- +-- R E S T R I C T -- +-- -- +-- S p e c -- +-- -- +-- Copyright (C) 1992-2016, 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 deals with the implementation of the Restrictions pragma + +with Aspects; use Aspects; +with Namet; use Namet; +with Rident; use Rident; +with Snames; use Snames; +with Table; +with Types; use Types; +with Uintp; use Uintp; + +package Restrict is + + Restrictions : Restrictions_Info := No_Restrictions; + -- This variable records restrictions found in any units in the main + -- extended unit, and in the case of restrictions checked for partition + -- consistency, restrictions found in any with'ed units, parent specs + -- etc., since we may as well check as much as we can at compile time. + -- These variables should not be referenced directly by clients. Instead + -- use Check_Restriction to record a violation of a restriction, and + -- Restriction_Active to test if a given restriction is active. + + Restrictions_Loc : array (All_Restrictions) of Source_Ptr := + (others => No_Location); + -- Locations of Restrictions pragmas for error message purposes. + -- Valid only if corresponding entry in Restrictions is set. A value + -- of No_Location is used for implicit restrictions set by another + -- pragma, and a value of System_Location is used for restrictions + -- set from package Standard by the processing in Targparm. + + Restriction_Profile_Name : array (All_Restrictions) of Profile_Name; + -- Entries in this array are valid only if the corresponding restriction in + -- Restrictions is set. The value is the corresponding profile name if the + -- restriction was set by a Profile or Profile_Warnings pragma. The value + -- is No_Profile in all other cases. + + Main_Restrictions : Restrictions_Info := No_Restrictions; + -- This variable records only restrictions found in any units of the + -- main extended unit. These are the variables used for ali file output, + -- since we want the binder to be able to accurately diagnose inter-unit + -- restriction violations. + + Restriction_Warnings : Rident.Restriction_Flags := (others => False); + -- If one of these flags is set, then it means that violation of the + -- corresponding restriction results only in a warning message, not + -- in an error message, and the restriction is not otherwise enforced. + -- Note that the flags in Restrictions are set to indicate that the + -- restriction is set in this case, but Main_Restrictions is never + -- set if Restriction_Warnings is set, so this does not look like a + -- restriction to the binder. + + -- The following declarations establish a mapping between restriction + -- identifiers, and the names of corresponding restricted library units. + + type Unit_Entry is record + Res_Id : Restriction_Id; + Filenm : String (1 .. 8); + end record; + + Unit_Array : constant array (Positive range <>) of Unit_Entry := ( + (No_Asynchronous_Control, "a-astaco"), + (No_Calendar, "a-calend"), + (No_Calendar, "calendar"), + (No_Delay, "a-calend"), + (No_Delay, "calendar"), + (No_Dynamic_Priorities, "a-dynpri"), + (No_Finalization, "a-finali"), + (No_IO, "a-direio"), + (No_IO, "directio"), + (No_IO, "a-sequio"), + (No_IO, "sequenio"), + (No_IO, "a-ststio"), + (No_IO, "a-textio"), + (No_IO, "text_io "), + (No_IO, "a-witeio"), + (No_Task_Attributes_Package, "a-tasatt"), + (No_Unchecked_Conversion, "a-unccon"), + (No_Unchecked_Conversion, "unchconv"), + (No_Unchecked_Deallocation, "a-uncdea"), + (No_Unchecked_Deallocation, "unchdeal")); + + -- The following map has True for all GNAT-defined Restrictions. It is used + -- to implement pragma Restrictions (No_Implementation_Restrictions) (which + -- is why this restriction itself is excluded from the list). + + Implementation_Restriction : constant array (All_Restrictions) of Boolean := + (Simple_Barriers => True, + No_Calendar => True, + No_Default_Initialization => True, + No_Direct_Boolean_Operators => True, + No_Dispatching_Calls => True, + No_Dynamic_Attachment => True, + No_Elaboration_Code => True, + No_Enumeration_Maps => True, + No_Entry_Calls_In_Elaboration_Code => True, + No_Entry_Queue => True, + No_Exception_Handlers => True, + No_Exception_Propagation => True, + No_Exception_Registration => True, + No_Finalization => True, + No_Fixed_IO => True, + No_Implementation_Attributes => True, + No_Implementation_Pragmas => True, + No_Implicit_Conditionals => True, + No_Implicit_Aliasing => True, + No_Implicit_Dynamic_Code => True, + No_Implicit_Loops => True, + No_Initialize_Scalars => True, + No_Local_Protected_Objects => True, + No_Long_Long_Integers => True, + No_Multiple_Elaboration => True, + No_Protected_Type_Allocators => True, + No_Relative_Delay => True, + No_Requeue_Statements => True, + No_Secondary_Stack => True, + No_Select_Statements => True, + No_Standard_Storage_Pools => True, + No_Stream_Optimizations => True, + No_Streams => True, + No_Task_Attributes_Package => True, + No_Task_Termination => True, + No_Tasking => True, + No_Wide_Characters => True, + Static_Priorities => True, + Static_Storage_Size => True, + Pure_Barriers => True, + SPARK_05 => True, + others => False); + + -------------------------- + -- No_Dependences Table -- + -------------------------- + + -- The following table records entries made by Restrictions pragmas + -- that specify a parameter for No_Dependence. Each such pragma makes + -- an entry in this table. + + -- Note: we have chosen to implement this restriction in the "syntactic" + -- form, where we do not check that the named package is a language defined + -- package, but instead we allow arbitrary package names. The discussion of + -- this issue is not complete in the ARG, but the sense seems to be leaning + -- in this direction, which makes more sense to us, since it is much more + -- useful, and much easier to implement. + + type ND_Entry is record + Unit : Node_Id; + -- The unit parameter from the No_Dependence pragma + + Warn : Boolean; + -- True if from Restriction_Warnings, False if from Restrictions + + Profile : Profile_Name; + -- Set to name of profile from which No_Dependence entry came, or to + -- No_Profile if a pragma Restriction set the No_Dependence entry. + end record; + + package No_Dependences is new Table.Table ( + Table_Component_Type => ND_Entry, + Table_Index_Type => Int, + Table_Low_Bound => 0, + Table_Initial => 200, + Table_Increment => 200, + Table_Name => "Name_No_Dependences"); + + ---------------------------- + -- No_Use_Of_Entity Table -- + ---------------------------- + + -- The following table records entries made by Restrictions pragmas + -- that specify a parameter for No_Use_Of_Entity. Each such pragma makes + -- an entry in this table. + + -- Note: we have chosen to implement this restriction in the "syntactic" + -- form, where we allow arbitrary fully qualified names to be specified. + + type NE_Entry is record + Entity : Node_Id; + -- The entity parameter from the No_Use_Of_Entity pragma. This is in + -- the form of a selected component, since that is the way the parser + -- processes it, and we don't further analyze it. + + Warn : Boolean; + -- True if from Restriction_Warnings, False if from Restrictions + + Profile : Profile_Name; + -- Set to name of profile from which No_Use_Of_Entity entry came, or to + -- No_Profile if a pragma Restriction set the No_Use_Of_Entity entry. + end record; + + package No_Use_Of_Entity is new Table.Table ( + Table_Component_Type => NE_Entry, + Table_Index_Type => Int, + Table_Low_Bound => 0, + Table_Initial => 200, + Table_Increment => 200, + Table_Name => "Name_No_Use_Of_Entity"); + + -- Note that in addition to making an entry in this table, we also set the + -- Boolean2 flag of the Name_Table entry for the simple name of the entity. + -- This is used to avoid most useless searches of this table. + + ----------------- + -- Subprograms -- + ----------------- + + -- Note: several of these subprograms can generate error messages (e.g. + -- Check_Restriction). These routines should be called in the analyzer + -- rather than the expander, so that the associated error messages are + -- correctly generated in semantics only (-gnatc) mode. + + function Abort_Allowed return Boolean; + pragma Inline (Abort_Allowed); + -- Tests to see if abort is allowed by the current restrictions settings. + -- For abort to be allowed, either No_Abort_Statements must be False, + -- or Max_Asynchronous_Select_Nesting must be non-zero. + + procedure Check_Compiler_Unit (Feature : String; N : Node_Id); + -- If unit N is in a unit that has a pragma Compiler_Unit_Warning, then + -- a message is posted on node N noting use of the given feature is not + -- permitted in the compiler (bootstrap considerations). + + procedure Check_Compiler_Unit (Feature : String; Loc : Source_Ptr); + -- If unit N is in a unit that has a pragma Compiler_Unit_Warning, then a + -- message is posted at location Loc noting use of the given feature is not + -- permitted in the compiler (bootstrap considerations). + + procedure Check_Restricted_Unit (U : Unit_Name_Type; N : Node_Id); + -- Checks if loading of unit U is prohibited by the setting of some + -- restriction (e.g. No_IO restricts the loading of unit Ada.Text_IO). + -- If a restriction exists post error message at the given node. + + procedure Check_Restriction + (Msg_Issued : out Boolean; + R : Restriction_Id; + N : Node_Id; + V : Uint := Uint_Minus_1); + -- Checks that the given restriction is not set, and if it is set, an + -- appropriate message is posted on the given node, in which case + -- Msg_Issued is set to True (and False otherwise). Also records the + -- violation in the appropriate internal arrays. Note that it is mandatory + -- to always use this routine to check if a restriction is violated. Such + -- checks must never be done directly by the caller, since otherwise + -- violations in the absence of restrictions are not properly recorded. The + -- value of V is relevant only for parameter restrictions, and in this case + -- indicates the exact count for the violation. If the exact count is not + -- known, V is left at its default of -1 which indicates an unknown count. + + procedure Check_Restriction + (R : Restriction_Id; + N : Node_Id; + V : Uint := Uint_Minus_1); + -- Wrapper on Check_Restriction with Msg_Issued, with the out-parameter + -- being ignored here. + + procedure Check_Restriction_No_Dependence (U : Node_Id; Err : Node_Id); + -- Called when a dependence on a unit is created (either implicitly, or by + -- an explicit WITH clause). U is a node for the unit involved, and Err is + -- the node to which an error will be attached if necessary. + + procedure Check_Restriction_No_Specification_Of_Aspect (N : Node_Id); + -- N is the node id for an N_Aspect_Specification. An error message + -- (warning) will be issued if a restriction (warning) was previously set + -- for this aspect using Set_No_Specification_Of_Aspect. + + procedure Check_Restriction_No_Use_Of_Attribute (N : Node_Id); + -- N denotes an attribute definition clause or an attribute reference. An + -- error message (warning) will be issued if a restriction (warning) was + -- previously set for this attribute using Set_No_Use_Of_Attribute. + + procedure Check_Restriction_No_Use_Of_Entity (N : Node_Id); + -- N is the node id for an entity reference. An error message (warning) + -- will be issued if a restriction (warning) was previously set for this + -- entity name using Set_No_Use_Of_Entity. + + procedure Check_Restriction_No_Use_Of_Pragma (N : Node_Id); + -- N is the node of a pragma. An error message (warning) will be issued + -- if a restriction (warning) was previously set for this pragma using + -- Set_No_Use_Of_Pragma. + + procedure Check_Elaboration_Code_Allowed (N : Node_Id); + -- Tests to see if elaboration code is allowed by the current restrictions + -- settings. This function is called by Gigi when it needs to define an + -- elaboration routine. If elaboration code is not allowed, an error + -- message is posted on the node given as argument. + + procedure Check_SPARK_05_Restriction + (Msg : String; + N : Node_Id; + Force : Boolean := False); + -- Node N represents a construct not allowed in SPARK_05 mode. If this is + -- a source node, or if the restriction is forced (Force = True), and + -- the SPARK_05 restriction is set, then an error is issued on N. Msg + -- is appended to the restriction failure message. + + procedure Check_SPARK_05_Restriction + (Msg1 : String; + Msg2 : String; + N : Node_Id); + -- Same as Check_SPARK_05_Restriction except there is a continuation + -- message Msg2 following the initial message Msg1. + + procedure Check_No_Implicit_Aliasing (Obj : Node_Id); + -- Obj is a node for which Is_Aliased_View is True, which is being used in + -- a context (e.g. 'Access) where no implicit aliasing is allowed if the + -- restriction No_Implicit_Aliasing is set. This procedure checks for the + -- case where the restriction is active and Obj does not meet the required + -- rules for avoiding implicit aliases, and issues a restriction message. + + procedure Check_Implicit_Dynamic_Code_Allowed (N : Node_Id); + -- Tests to see if dynamic code generation (dynamically generated + -- trampolines, in particular) is allowed by the current restrictions + -- settings. This function is called by Gigi when it needs to generate code + -- that generates a trampoline. If not allowed, an error message is posted + -- on the node given as argument. + + procedure Check_No_Implicit_Heap_Alloc (N : Node_Id); + -- Equivalent to Check_Restriction (No_Implicit_Heap_Allocations, N). + -- Provided for easy use by back end, which has to check this restriction. + + procedure Check_No_Implicit_Task_Alloc (N : Node_Id); + -- Equivalent to Check_Restriction (No_Implicit_Task_Allocations, N). + -- Provided for easy use by back end, which has to check this restriction. + + procedure Check_No_Implicit_Protected_Alloc (N : Node_Id); + -- Equivalent to: + -- Check_Restriction (No_Implicit_Protected_Object_Allocations, N) + -- Provided for easy use by back end, which has to check this restriction. + + procedure Check_Obsolescent_2005_Entity (E : Entity_Id; N : Node_Id); + -- This routine checks if the entity E is one of the obsolescent entries + -- in Ada.Characters.Handling in Ada 2005 and No_Obsolescent_Features + -- restriction is active. If so an appropriate message is given. N is + -- the node on which the message is to be placed. It's a bit kludgy to + -- have this highly specialized routine rather than some wonderful general + -- mechanism (e.g. a special pragma) to handle this case, but there are + -- only six cases, and it is not worth the effort to do something general. + + procedure Check_Wide_Character_Restriction (E : Entity_Id; N : Node_Id); + -- This procedure checks if the No_Wide_Character restriction is active, + -- and if so, if N Comes_From_Source, and the root type of E is one of + -- [Wide_]Wide_Character or [Wide_]Wide_String, then the restriction + -- violation is recorded, and an appropriate message given. + + function Get_Restriction_Id + (N : Name_Id) return Restriction_Id; + -- Given an identifier name, determines if it is a valid restriction + -- identifier, and if so returns the corresponding Restriction_Id value, + -- otherwise returns Not_A_Restriction_Id. + + function OK_No_Dependence_Unit_Name (N : Node_Id) return Boolean; + -- Used in checking No_Dependence argument of pragma Restrictions or + -- pragma Restrictions_Warning, or attribute Restriction_Set. Returns + -- True if N has the proper form for a unit name, False otherwise. + + function OK_No_Use_Of_Entity_Name (N : Node_Id) return Boolean; + -- Used in checking No_Use_Of_Entity argument of pragma Restrictions or + -- pragma Restrictions_Warning, or attribute Restriction_Set. Returns + -- True if N has the proper form for an entity name, False otherwise. + + function Is_In_Hidden_Part_In_SPARK (Loc : Source_Ptr) return Boolean; + -- Determine if given location is covered by a hidden region range in the + -- SPARK hides table. + + function No_Exception_Handlers_Set return Boolean; + -- Test to see if current restrictions settings specify that no exception + -- handlers are present. This function is called by Gigi when it needs to + -- expand an AT END clean up identifier with no exception handler. True + -- will be returned if the configurable run-time is activated, and either + -- of the restrictions No_Exception_Handlers or No_Exception_Propagation is + -- set. In the latter case, the source may contain handlers but they either + -- get converted using the local goto transformation or deleted. + + function No_Exception_Propagation_Active return Boolean; + -- Test to see if current restrictions settings specify that no + -- exception propagation is activated. + + function Process_Restriction_Synonyms (N : Node_Id) return Name_Id; + -- Id is a node whose Chars field contains the name of a restriction. + -- If it is one of synonyms that we allow for historical purposes (for + -- list see System.Rident), then the proper official name is returned. + + function Restriction_Active (R : All_Restrictions) return Boolean; + pragma Inline (Restriction_Active); + -- Determines if a given restriction is active. This call should only be + -- used where the compiled code depends on whether the restriction is + -- active. Always use Check_Restriction to record a violation. Note that + -- this returns False if we only have a Restriction_Warnings set, since + -- restriction warnings should never affect generated code. If you want + -- to know if a call to Check_Restriction is needed then use the function + -- Restriction_Check_Required instead. + + function Restriction_Check_Required (R : All_Restrictions) return Boolean; + pragma Inline (Restriction_Check_Required); + -- Determines if either a Restriction_Warnings or Restrictions pragma has + -- been given for the specified restriction. If true, then a subsequent + -- call to Check_Restriction is required if the restriction is violated. + -- This must not be used to guard code generation that depends on whether + -- a restriction is active (see Restriction_Active above). Typically it + -- is used to avoid complex code to determine if a restriction is violated, + -- executing this code only if needed. + + function Restricted_Profile return Boolean; + -- Tests if set of restrictions corresponding to Restricted_Tasking profile + -- is currently in effect (set by pragma Profile, or by an appropriate set + -- of individual Restrictions pragmas). Returns True only if all the + -- required restrictions are set. + + procedure Set_Hidden_Part_In_SPARK (Loc1, Loc2 : Source_Ptr); + -- Insert a new hidden region range in the SPARK hides table. The effect + -- is to hide any SPARK violation messages which are in the range Loc1 to + -- Loc2-1 (i.e. Loc2 is the first location for reenabling checks). + + procedure Set_Profile_Restrictions + (P : Profile_Name; + N : Node_Id; + Warn : Boolean); + -- Sets the set of restrictions associated with the given profile name. N + -- is the node of the construct to which error messages are to be attached + -- as required. Warn is set True for the case of Profile_Warnings where the + -- restrictions are set as warnings rather than legality requirements, and + -- is also True for Profile if the Treat_Restrictions_As_Warnings flag is + -- set. It is false for Profile if this flag is not set. + + procedure Set_Restriction + (R : All_Boolean_Restrictions; + N : Node_Id); + -- N is a node (typically a pragma node) that has the effect of setting + -- Boolean restriction R. The restriction is set in Restrictions, and + -- also in Main_Restrictions if this is the main unit. + + procedure Set_Restriction + (R : All_Parameter_Restrictions; + N : Node_Id; + V : Integer); + -- Similar to the above, except that this is used for the case of a + -- parameter restriction, and the corresponding value V is given. + + procedure Set_Restriction_No_Dependence + (Unit : Node_Id; + Warn : Boolean; + Profile : Profile_Name := No_Profile); + -- Sets given No_Dependence restriction in table if not there already. Warn + -- is True if from Restriction_Warnings, or for Restrictions if the flag + -- Treat_Restrictions_As_Warnings is set. False if from Restrictions and + -- this flag is not set. Profile is set to a non-default value if the + -- No_Dependence restriction comes from a Profile pragma. + + procedure Set_Restriction_No_Specification_Of_Aspect + (N : Node_Id; + Warning : Boolean); + -- N is the node id for an identifier from a pragma Restrictions for the + -- No_Specification_Of_Aspect pragma. An error message will be issued if + -- the identifier is not a valid aspect name. Warning is set True for the + -- case of a Restriction_Warnings pragma specifying this restriction and + -- False for a Restrictions pragma specifying this restriction. + + procedure Set_Restriction_No_Specification_Of_Aspect (A_Id : Aspect_Id); + -- Version used by Get_Target_Parameters (via Tbuild) + + procedure Set_Restriction_No_Use_Of_Attribute + (N : Node_Id; + Warning : Boolean); + -- N is the node id for the identifier in a pragma Restrictions for + -- No_Use_Of_Attribute. Caller has verified that this is a valid attribute + -- designator. + + procedure Set_Restriction_No_Use_Of_Attribute (A_Id : Attribute_Id); + -- Version used by Get_Target_Parameters (via Tbuild) + + procedure Set_Restriction_No_Use_Of_Entity + (Entity : Node_Id; + Warning : Boolean; + Profile : Profile_Name := No_Profile); + -- Sets given No_Use_Of_Entity restriction in table if not there already. + -- Warn is True if from Restriction_Warnings, or for Restrictions if the + -- flag Treat_Restrictions_As_Warnings is set. False if from Restrictions + -- and this flag is not set. Profile is set to a non-default value if the + -- No_Dependence restriction comes from a Profile pragma. This procedure + -- also takes care of setting the Boolean2 flag of the simple name for + -- the entity (to optimize table searches). + + procedure Set_Restriction_No_Use_Of_Pragma + (N : Node_Id; + Warning : Boolean); + -- N is the node id for the identifier in a pragma Restrictions for + -- No_Use_Of_Pragma. Caller has verified that this is a valid pragma id. + + procedure Set_Restriction_No_Use_Of_Pragma (A_Id : Pragma_Id); + -- Version used in call from Get_Target_Parameters (via Tbuild). + + function Tasking_Allowed return Boolean; + pragma Inline (Tasking_Allowed); + -- Tests if tasking operations are allowed by the current restrictions + -- settings. For tasking to be allowed Max_Tasks must be non-zero. + + ---------------------------------------------- + -- Handling of Boolean Compilation Switches -- + ---------------------------------------------- + + -- The following declarations are used for proper saving and restoring of + -- restrictions for separate compilation units. There are two cases: + + -- For partition-wide restrictions, we just let the restrictions pragmas + -- pile up, and we never reset them. We might as well detect what we can + -- at compile time. If e.g. a with'ed unit has a restriction for one of + -- the partition-wide restrictions, then the binder will enforce it on + -- all units in the partition, including the unit with the WITH. Although + -- it would not be wrong to leave this till bind time, we might as well + -- flag it earlier at compile time. + + -- For non-partition-wide restrictions, we have quite a different state + -- of affairs. Here it would be quite wrong to carry a restriction from + -- a with'ed unit to another with'ed unit, or from a package spec to the + -- package body. This means that we have to reset these non-partition + -- wide restrictions at the start of each separate compilation unit. For + -- units in the extended main program, we need to reset them all to the + -- values set by the configuration pragma file(s). For units not in the + -- extended main program, e.g. with'ed units, we might as well reset all + -- of these restrictions to off (False). The actual initial values will + -- be taken from the config files active when those units are compiled + -- as main units. + + type Save_Cunit_Boolean_Restrictions is private; + -- Type used for saving and restoring compilation unit restrictions. + + function Cunit_Boolean_Restrictions_Save + return Save_Cunit_Boolean_Restrictions; + -- This function saves the compilation unit restriction settings, leaving + -- them unchanged. This is used e.g. at the start of processing a context + -- clause, so that the main unit restrictions can be restored after all + -- the with'ed units have been processed. + + procedure Cunit_Boolean_Restrictions_Restore + (R : Save_Cunit_Boolean_Restrictions); + -- This is the corresponding restore procedure to restore restrictions + -- previously saved by Cunit_Boolean_Restrictions_Save. However it does + -- not reset No_Elaboration_Code, this stays set if it was set before + -- the call, and also if it is set before the call, then the Config + -- setting is also updated to include this restriction. This is what + -- implements the special handling of No_Elaboration_Code. + + procedure Save_Config_Cunit_Boolean_Restrictions; + -- This saves the current compilation unit restrictions in an internal + -- variable, and leaves them unchanged. This is called immediately after + -- processing the configuration file pragmas, to record the restrictions + -- set by these configuration file pragmas. + + procedure Restore_Config_Cunit_Boolean_Restrictions; + -- This restores the value saved by the previous call to save config values + -- saved by Save_Config_Cunit_Boolean_Restrictions. It is called at the + -- start of processing a new unit that is part of the main sources (e.g. + -- a package spec when the main unit is a package body). + + procedure Reset_Cunit_Boolean_Restrictions; + -- Turns off all non-partition-wide boolean restrictions + + procedure Add_To_Config_Boolean_Restrictions (R : Restriction_Id); + -- Add specified restriction to stored configuration boolean restrictions. + -- This is used for handling the special case of No_Elaboration_Code. + +private + type Save_Cunit_Boolean_Restrictions is + array (Cunit_Boolean_Restrictions) of Boolean; + -- Type used for saving and restoring compilation unit restrictions. + -- See Compilation_Unit_Restrictions_[Save|Restore] subprograms. + +end Restrict;