------------------------------------------------------------------------------ -- -- -- GNAT COMPILER COMPONENTS -- -- -- -- L I B -- -- -- -- B o d y -- -- -- -- Copyright (C) 1992-2017, 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. -- -- -- -- As a special exception under Section 7 of GPL version 3, you are granted -- -- additional permissions described in the GCC Runtime Library Exception, -- -- version 3.1, as published by the Free Software Foundation. -- -- -- -- You should have received a copy of the GNU General Public License and -- -- a copy of the GCC Runtime Library Exception along with this program; -- -- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see -- -- . -- -- -- -- GNAT was originally developed by the GNAT team at New York University. -- -- Extensive contributions were provided by Ada Core Technologies Inc. -- -- -- ------------------------------------------------------------------------------ pragma Style_Checks (All_Checks); -- Subprogram ordering not enforced in this unit -- (because of some logical groupings). with Atree; use Atree; with Csets; use Csets; with Einfo; use Einfo; with Nlists; use Nlists; with Opt; use Opt; with Output; use Output; with Sinfo; use Sinfo; with Sinput; use Sinput; with Stand; use Stand; with Stringt; use Stringt; with Tree_IO; use Tree_IO; with Uname; use Uname; with Widechar; use Widechar; package body Lib is Switch_Storing_Enabled : Boolean := True; -- Controlled by Enable_Switch_Storing/Disable_Switch_Storing ----------------------- -- Local Subprograms -- ----------------------- type SEU_Result is ( Yes_Before, -- S1 is in same extended unit as S2 and appears before it Yes_Same, -- S1 is in same extended unit as S2, Slocs are the same Yes_After, -- S1 is in same extended unit as S2, and appears after it No); -- S2 is not in same extended unit as S2 function Check_Same_Extended_Unit (S1, S2 : Source_Ptr) return SEU_Result; -- Used by In_Same_Extended_Unit and Earlier_In_Extended_Unit. Returns -- value as described above. function Get_Code_Or_Source_Unit (S : Source_Ptr; Unwind_Instances : Boolean; Unwind_Subunits : Boolean) return Unit_Number_Type; -- Common processing for routines Get_Code_Unit, Get_Source_Unit, and -- Get_Top_Level_Code_Unit. Unwind_Instances is True when the unit for the -- top-level instantiation should be returned instead of the unit for the -- template, in the case of an instantiation. Unwind_Subunits is True when -- the corresponding top-level unit should be returned instead of a -- subunit, in the case of a subunit. -------------------------------------------- -- Access Functions for Unit Table Fields -- -------------------------------------------- function Cunit (U : Unit_Number_Type) return Node_Id is begin return Units.Table (U).Cunit; end Cunit; function Cunit_Entity (U : Unit_Number_Type) return Entity_Id is begin return Units.Table (U).Cunit_Entity; end Cunit_Entity; function Dependency_Num (U : Unit_Number_Type) return Nat is begin return Units.Table (U).Dependency_Num; end Dependency_Num; function Dynamic_Elab (U : Unit_Number_Type) return Boolean is begin return Units.Table (U).Dynamic_Elab; end Dynamic_Elab; function Error_Location (U : Unit_Number_Type) return Source_Ptr is begin return Units.Table (U).Error_Location; end Error_Location; function Expected_Unit (U : Unit_Number_Type) return Unit_Name_Type is begin return Units.Table (U).Expected_Unit; end Expected_Unit; function Fatal_Error (U : Unit_Number_Type) return Fatal_Type is begin return Units.Table (U).Fatal_Error; end Fatal_Error; function Generate_Code (U : Unit_Number_Type) return Boolean is begin return Units.Table (U).Generate_Code; end Generate_Code; function Has_RACW (U : Unit_Number_Type) return Boolean is begin return Units.Table (U).Has_RACW; end Has_RACW; function Is_Predefined_Renaming (U : Unit_Number_Type) return Boolean is begin return Units.Table (U).Is_Predefined_Renaming; end Is_Predefined_Renaming; function Is_Internal_Unit (U : Unit_Number_Type) return Boolean is begin return Units.Table (U).Is_Internal_Unit; end Is_Internal_Unit; function Is_Predefined_Unit (U : Unit_Number_Type) return Boolean is begin return Units.Table (U).Is_Predefined_Unit; end Is_Predefined_Unit; function Ident_String (U : Unit_Number_Type) return Node_Id is begin return Units.Table (U).Ident_String; end Ident_String; function Loading (U : Unit_Number_Type) return Boolean is begin return Units.Table (U).Loading; end Loading; function Main_CPU (U : Unit_Number_Type) return Int is begin return Units.Table (U).Main_CPU; end Main_CPU; function Main_Priority (U : Unit_Number_Type) return Int is begin return Units.Table (U).Main_Priority; end Main_Priority; function Munit_Index (U : Unit_Number_Type) return Nat is begin return Units.Table (U).Munit_Index; end Munit_Index; function No_Elab_Code_All (U : Unit_Number_Type) return Boolean is begin return Units.Table (U).No_Elab_Code_All; end No_Elab_Code_All; function OA_Setting (U : Unit_Number_Type) return Character is begin return Units.Table (U).OA_Setting; end OA_Setting; function Source_Index (U : Unit_Number_Type) return Source_File_Index is begin return Units.Table (U).Source_Index; end Source_Index; function Unit_File_Name (U : Unit_Number_Type) return File_Name_Type is begin return Units.Table (U).Unit_File_Name; end Unit_File_Name; function Unit_Name (U : Unit_Number_Type) return Unit_Name_Type is begin return Units.Table (U).Unit_Name; end Unit_Name; ------------------------------------------ -- Subprograms to Set Unit Table Fields -- ------------------------------------------ procedure Set_Cunit (U : Unit_Number_Type; N : Node_Id) is begin Units.Table (U).Cunit := N; end Set_Cunit; procedure Set_Cunit_Entity (U : Unit_Number_Type; E : Entity_Id) is begin Units.Table (U).Cunit_Entity := E; Set_Is_Compilation_Unit (E); end Set_Cunit_Entity; procedure Set_Dynamic_Elab (U : Unit_Number_Type; B : Boolean := True) is begin Units.Table (U).Dynamic_Elab := B; end Set_Dynamic_Elab; procedure Set_Error_Location (U : Unit_Number_Type; W : Source_Ptr) is begin Units.Table (U).Error_Location := W; end Set_Error_Location; procedure Set_Fatal_Error (U : Unit_Number_Type; V : Fatal_Type) is begin Units.Table (U).Fatal_Error := V; end Set_Fatal_Error; procedure Set_Generate_Code (U : Unit_Number_Type; B : Boolean := True) is begin Units.Table (U).Generate_Code := B; end Set_Generate_Code; procedure Set_Has_RACW (U : Unit_Number_Type; B : Boolean := True) is begin Units.Table (U).Has_RACW := B; end Set_Has_RACW; procedure Set_Ident_String (U : Unit_Number_Type; N : Node_Id) is begin Units.Table (U).Ident_String := N; end Set_Ident_String; procedure Set_Loading (U : Unit_Number_Type; B : Boolean := True) is begin Units.Table (U).Loading := B; end Set_Loading; procedure Set_Main_CPU (U : Unit_Number_Type; P : Int) is begin Units.Table (U).Main_CPU := P; end Set_Main_CPU; procedure Set_Main_Priority (U : Unit_Number_Type; P : Int) is begin Units.Table (U).Main_Priority := P; end Set_Main_Priority; procedure Set_No_Elab_Code_All (U : Unit_Number_Type; B : Boolean := True) is begin Units.Table (U).No_Elab_Code_All := B; end Set_No_Elab_Code_All; procedure Set_OA_Setting (U : Unit_Number_Type; C : Character) is begin Units.Table (U).OA_Setting := C; end Set_OA_Setting; procedure Set_Unit_Name (U : Unit_Number_Type; N : Unit_Name_Type) is begin Units.Table (U).Unit_Name := N; end Set_Unit_Name; ------------------------------ -- Check_Same_Extended_Unit -- ------------------------------ function Check_Same_Extended_Unit (S1, S2 : Source_Ptr) return SEU_Result is Max_Iterations : constant Nat := Maximum_Instantiations * 2; -- Limit to prevent a potential infinite loop Counter : Nat := 0; Depth1 : Nat; Depth2 : Nat; Inst1 : Source_Ptr; Inst2 : Source_Ptr; Sind1 : Source_File_Index; Sind2 : Source_File_Index; Sloc1 : Source_Ptr; Sloc2 : Source_Ptr; Unit1 : Node_Id; Unit2 : Node_Id; Unum1 : Unit_Number_Type; Unum2 : Unit_Number_Type; begin if S1 = No_Location or else S2 = No_Location then return No; elsif S1 = Standard_Location then if S2 = Standard_Location then return Yes_Same; else return No; end if; elsif S2 = Standard_Location then return No; end if; Sloc1 := S1; Sloc2 := S2; Unum1 := Get_Source_Unit (Sloc1); Unum2 := Get_Source_Unit (Sloc2); loop -- Step 1: Check whether the two locations are in the same source -- file. Sind1 := Get_Source_File_Index (Sloc1); Sind2 := Get_Source_File_Index (Sloc2); if Sind1 = Sind2 then if Sloc1 < Sloc2 then return Yes_Before; elsif Sloc1 > Sloc2 then return Yes_After; else return Yes_Same; end if; end if; -- Step 2: Check subunits. If a subunit is instantiated, follow the -- instantiation chain rather than the stub chain. Unit1 := Unit (Cunit (Unum1)); Unit2 := Unit (Cunit (Unum2)); Inst1 := Instantiation (Sind1); Inst2 := Instantiation (Sind2); if Nkind (Unit1) = N_Subunit and then Present (Corresponding_Stub (Unit1)) and then Inst1 = No_Location then if Nkind (Unit2) = N_Subunit and then Present (Corresponding_Stub (Unit2)) and then Inst2 = No_Location then -- Both locations refer to subunits which may have a common -- ancestor. If they do, the deeper subunit must have a longer -- unit name. Replace the deeper one with its corresponding -- stub in order to find the nearest ancestor. if Length_Of_Name (Unit_Name (Unum1)) < Length_Of_Name (Unit_Name (Unum2)) then Sloc2 := Sloc (Corresponding_Stub (Unit2)); Unum2 := Get_Source_Unit (Sloc2); goto Continue; else Sloc1 := Sloc (Corresponding_Stub (Unit1)); Unum1 := Get_Source_Unit (Sloc1); goto Continue; end if; -- Sloc1 in subunit, Sloc2 not else Sloc1 := Sloc (Corresponding_Stub (Unit1)); Unum1 := Get_Source_Unit (Sloc1); goto Continue; end if; -- Sloc2 in subunit, Sloc1 not elsif Nkind (Unit2) = N_Subunit and then Present (Corresponding_Stub (Unit2)) and then Inst2 = No_Location then Sloc2 := Sloc (Corresponding_Stub (Unit2)); Unum2 := Get_Source_Unit (Sloc2); goto Continue; end if; -- Step 3: Check instances. The two locations may yield a common -- ancestor. if Inst1 /= No_Location then if Inst2 /= No_Location then -- Both locations denote instantiations Depth1 := Instantiation_Depth (Sloc1); Depth2 := Instantiation_Depth (Sloc2); if Depth1 < Depth2 then Sloc2 := Inst2; Unum2 := Get_Source_Unit (Sloc2); goto Continue; elsif Depth1 > Depth2 then Sloc1 := Inst1; Unum1 := Get_Source_Unit (Sloc1); goto Continue; else Sloc1 := Inst1; Sloc2 := Inst2; Unum1 := Get_Source_Unit (Sloc1); Unum2 := Get_Source_Unit (Sloc2); goto Continue; end if; -- Sloc1 is an instantiation else Sloc1 := Inst1; Unum1 := Get_Source_Unit (Sloc1); goto Continue; end if; -- Sloc2 is an instantiation elsif Inst2 /= No_Location then Sloc2 := Inst2; Unum2 := Get_Source_Unit (Sloc2); goto Continue; end if; -- Step 4: One location in the spec, the other in the corresponding -- body of the same unit. The location in the spec is considered -- earlier. if Nkind (Unit1) = N_Subprogram_Body or else Nkind (Unit1) = N_Package_Body then if Library_Unit (Cunit (Unum1)) = Cunit (Unum2) then return Yes_After; end if; elsif Nkind (Unit2) = N_Subprogram_Body or else Nkind (Unit2) = N_Package_Body then if Library_Unit (Cunit (Unum2)) = Cunit (Unum1) then return Yes_Before; end if; end if; -- At this point it is certain that the two locations denote two -- entirely separate units. return No; <> Counter := Counter + 1; -- Prevent looping forever if Counter > Max_Iterations then -- ??? Not quite right, but return a value to be able to generate -- SCIL files and hope for the best. if CodePeer_Mode then return No; else raise Program_Error; end if; end if; end loop; end Check_Same_Extended_Unit; ------------------------------- -- Compilation_Switches_Last -- ------------------------------- function Compilation_Switches_Last return Nat is begin return Compilation_Switches.Last; end Compilation_Switches_Last; --------------------------- -- Enable_Switch_Storing -- --------------------------- procedure Enable_Switch_Storing is begin Switch_Storing_Enabled := True; end Enable_Switch_Storing; ---------------------------- -- Disable_Switch_Storing -- ---------------------------- procedure Disable_Switch_Storing is begin Switch_Storing_Enabled := False; end Disable_Switch_Storing; ------------------------------ -- Earlier_In_Extended_Unit -- ------------------------------ function Earlier_In_Extended_Unit (S1, S2 : Source_Ptr) return Boolean is begin return Check_Same_Extended_Unit (S1, S2) = Yes_Before; end Earlier_In_Extended_Unit; ----------------------- -- Exact_Source_Name -- ----------------------- function Exact_Source_Name (Loc : Source_Ptr) return String is U : constant Unit_Number_Type := Get_Source_Unit (Loc); Buf : constant Source_Buffer_Ptr := Source_Text (Source_Index (U)); Orig : constant Source_Ptr := Original_Location (Loc); P : Source_Ptr; WC : Char_Code; Err : Boolean; pragma Warnings (Off, WC); pragma Warnings (Off, Err); begin -- Entity is character literal if Buf (Orig) = ''' then return String (Buf (Orig .. Orig + 2)); -- Entity is operator symbol elsif Buf (Orig) = '"' or else Buf (Orig) = '%' then P := Orig; loop P := P + 1; exit when Buf (P) = Buf (Orig); end loop; return String (Buf (Orig .. P)); -- Entity is identifier else P := Orig; loop if Is_Start_Of_Wide_Char (Buf, P) then Scan_Wide (Buf, P, WC, Err); elsif not Identifier_Char (Buf (P)) then exit; else P := P + 1; end if; end loop; -- Write out the identifier by copying the exact source characters -- used in its declaration. Note that this means wide characters will -- be in their original encoded form. return String (Buf (Orig .. P - 1)); end if; end Exact_Source_Name; ---------------------------- -- Entity_Is_In_Main_Unit -- ---------------------------- function Entity_Is_In_Main_Unit (E : Entity_Id) return Boolean is S : Entity_Id; begin S := Scope (E); while S /= Standard_Standard loop if S = Main_Unit_Entity then return True; elsif Ekind (S) = E_Package and then Is_Child_Unit (S) then return False; else S := Scope (S); end if; end loop; return False; end Entity_Is_In_Main_Unit; -------------------------- -- Generic_May_Lack_ALI -- -------------------------- function Generic_May_Lack_ALI (Unum : Unit_Number_Type) return Boolean is begin -- We allow internal generic units to be used without having a -- corresponding ALI files to help bootstrapping with older compilers -- that did not support generating ALIs for such generics. It is safe -- to do so because the only thing the generated code would contain -- is the elaboration boolean, and we are careful to elaborate all -- predefined units first anyway. return Is_Internal_Unit (Unum); end Generic_May_Lack_ALI; ----------------------------- -- Get_Code_Or_Source_Unit -- ----------------------------- function Get_Code_Or_Source_Unit (S : Source_Ptr; Unwind_Instances : Boolean; Unwind_Subunits : Boolean) return Unit_Number_Type is begin -- Search table unless we have No_Location, which can happen if the -- relevant location has not been set yet. Happens for example when -- we obtain Sloc (Cunit (Main_Unit)) before it is set. if S /= No_Location then declare Source_File : Source_File_Index; Source_Unit : Unit_Number_Type; Unit_Node : Node_Id; begin Source_File := Get_Source_File_Index (S); if Unwind_Instances then while Template (Source_File) /= No_Source_File loop Source_File := Template (Source_File); end loop; end if; Source_Unit := Unit (Source_File); if Unwind_Subunits then Unit_Node := Unit (Cunit (Source_Unit)); while Nkind (Unit_Node) = N_Subunit and then Present (Corresponding_Stub (Unit_Node)) loop Source_Unit := Get_Code_Or_Source_Unit (Sloc (Corresponding_Stub (Unit_Node)), Unwind_Instances => Unwind_Instances, Unwind_Subunits => Unwind_Subunits); Unit_Node := Unit (Cunit (Source_Unit)); end loop; end if; if Source_Unit /= No_Unit then return Source_Unit; end if; end; end if; -- If S was No_Location, or was not in the table, we must be in the main -- source unit (and the value has not been placed in the table yet), -- or in one of the configuration pragma files. return Main_Unit; end Get_Code_Or_Source_Unit; ------------------- -- Get_Code_Unit -- ------------------- function Get_Code_Unit (S : Source_Ptr) return Unit_Number_Type is begin return Get_Code_Or_Source_Unit (Top_Level_Location (S), Unwind_Instances => False, Unwind_Subunits => False); end Get_Code_Unit; function Get_Code_Unit (N : Node_Or_Entity_Id) return Unit_Number_Type is begin return Get_Code_Unit (Sloc (N)); end Get_Code_Unit; ---------------------------- -- Get_Compilation_Switch -- ---------------------------- function Get_Compilation_Switch (N : Pos) return String_Ptr is begin if N <= Compilation_Switches.Last then return Compilation_Switches.Table (N); else return null; end if; end Get_Compilation_Switch; ---------------------------------- -- Get_Cunit_Entity_Unit_Number -- ---------------------------------- function Get_Cunit_Entity_Unit_Number (E : Entity_Id) return Unit_Number_Type is begin for U in Units.First .. Units.Last loop if Cunit_Entity (U) = E then return U; end if; end loop; -- If not in the table, must be the main source unit, and we just -- have not got it put into the table yet. return Main_Unit; end Get_Cunit_Entity_Unit_Number; --------------------------- -- Get_Cunit_Unit_Number -- --------------------------- function Get_Cunit_Unit_Number (N : Node_Id) return Unit_Number_Type is begin for U in Units.First .. Units.Last loop if Cunit (U) = N then return U; end if; end loop; -- If not in the table, must be a spec created for a main unit that is a -- child subprogram body which we have not inserted into the table yet. if N = Library_Unit (Cunit (Main_Unit)) then return Main_Unit; -- If it is anything else, something is seriously wrong, and we really -- don't want to proceed, even if assertions are off, so we explicitly -- raise an exception in this case to terminate compilation. else raise Program_Error; end if; end Get_Cunit_Unit_Number; --------------------- -- Get_Source_Unit -- --------------------- function Get_Source_Unit (S : Source_Ptr) return Unit_Number_Type is begin return Get_Code_Or_Source_Unit (S, Unwind_Instances => True, Unwind_Subunits => False); end Get_Source_Unit; function Get_Source_Unit (N : Node_Or_Entity_Id) return Unit_Number_Type is begin return Get_Source_Unit (Sloc (N)); end Get_Source_Unit; ----------------------------- -- Get_Top_Level_Code_Unit -- ----------------------------- function Get_Top_Level_Code_Unit (S : Source_Ptr) return Unit_Number_Type is begin return Get_Code_Or_Source_Unit (Top_Level_Location (S), Unwind_Instances => False, Unwind_Subunits => True); end Get_Top_Level_Code_Unit; function Get_Top_Level_Code_Unit (N : Node_Or_Entity_Id) return Unit_Number_Type is begin return Get_Top_Level_Code_Unit (Sloc (N)); end Get_Top_Level_Code_Unit; -------------------------------- -- In_Extended_Main_Code_Unit -- -------------------------------- function In_Extended_Main_Code_Unit (N : Node_Or_Entity_Id) return Boolean is begin if Sloc (N) = Standard_Location then return False; elsif Sloc (N) = No_Location then return False; -- Special case Itypes to test the Sloc of the associated node. The -- reason we do this is for possible calls from gigi after -gnatD -- processing is complete in sprint. This processing updates the -- sloc fields of all nodes in the tree, but itypes are not in the -- tree so their slocs do not get updated. elsif Nkind (N) = N_Defining_Identifier and then Is_Itype (N) then return In_Extended_Main_Code_Unit (Associated_Node_For_Itype (N)); -- Otherwise see if we are in the main unit elsif Get_Code_Unit (Sloc (N)) = Get_Code_Unit (Cunit (Main_Unit)) then return True; -- Node may be in spec (or subunit etc) of main unit else return In_Same_Extended_Unit (N, Cunit (Main_Unit)); end if; end In_Extended_Main_Code_Unit; function In_Extended_Main_Code_Unit (Loc : Source_Ptr) return Boolean is begin if Loc = Standard_Location then return False; elsif Loc = No_Location then return False; -- Otherwise see if we are in the main unit elsif Get_Code_Unit (Loc) = Get_Code_Unit (Cunit (Main_Unit)) then return True; -- Location may be in spec (or subunit etc) of main unit else return In_Same_Extended_Unit (Loc, Sloc (Cunit (Main_Unit))); end if; end In_Extended_Main_Code_Unit; ---------------------------------- -- In_Extended_Main_Source_Unit -- ---------------------------------- function In_Extended_Main_Source_Unit (N : Node_Or_Entity_Id) return Boolean is Nloc : constant Source_Ptr := Sloc (N); Mloc : constant Source_Ptr := Sloc (Cunit (Main_Unit)); begin -- If parsing, then use the global flag to indicate result if Compiler_State = Parsing then return Parsing_Main_Extended_Source; -- Special value cases elsif Nloc = Standard_Location then return False; elsif Nloc = No_Location then return False; -- Special case Itypes to test the Sloc of the associated node. The -- reason we do this is for possible calls from gigi after -gnatD -- processing is complete in sprint. This processing updates the -- sloc fields of all nodes in the tree, but itypes are not in the -- tree so their slocs do not get updated. elsif Nkind (N) = N_Defining_Identifier and then Is_Itype (N) then return In_Extended_Main_Source_Unit (Associated_Node_For_Itype (N)); -- Otherwise compare original locations to see if in same unit else return In_Same_Extended_Unit (Original_Location (Nloc), Original_Location (Mloc)); end if; end In_Extended_Main_Source_Unit; function In_Extended_Main_Source_Unit (Loc : Source_Ptr) return Boolean is Mloc : constant Source_Ptr := Sloc (Cunit (Main_Unit)); begin -- If parsing, then use the global flag to indicate result if Compiler_State = Parsing then return Parsing_Main_Extended_Source; -- Special value cases elsif Loc = Standard_Location then return False; elsif Loc = No_Location then return False; -- Otherwise compare original locations to see if in same unit else return In_Same_Extended_Unit (Original_Location (Loc), Original_Location (Mloc)); end if; end In_Extended_Main_Source_Unit; ---------------------- -- In_Internal_Unit -- ---------------------- function In_Internal_Unit (N : Node_Or_Entity_Id) return Boolean is begin return In_Internal_Unit (Sloc (N)); end In_Internal_Unit; function In_Internal_Unit (S : Source_Ptr) return Boolean is Unit : constant Unit_Number_Type := Get_Source_Unit (S); begin return Is_Internal_Unit (Unit); end In_Internal_Unit; ---------------------------- -- In_Predefined_Renaming -- ---------------------------- function In_Predefined_Renaming (N : Node_Or_Entity_Id) return Boolean is begin return In_Predefined_Renaming (Sloc (N)); end In_Predefined_Renaming; function In_Predefined_Renaming (S : Source_Ptr) return Boolean is Unit : constant Unit_Number_Type := Get_Source_Unit (S); begin return Is_Predefined_Renaming (Unit); end In_Predefined_Renaming; ------------------------ -- In_Predefined_Unit -- ------------------------ function In_Predefined_Unit (N : Node_Or_Entity_Id) return Boolean is begin return In_Predefined_Unit (Sloc (N)); end In_Predefined_Unit; function In_Predefined_Unit (S : Source_Ptr) return Boolean is Unit : constant Unit_Number_Type := Get_Source_Unit (S); begin return Is_Predefined_Unit (Unit); end In_Predefined_Unit; ----------------------- -- In_Same_Code_Unit -- ----------------------- function In_Same_Code_Unit (N1, N2 : Node_Or_Entity_Id) return Boolean is S1 : constant Source_Ptr := Sloc (N1); S2 : constant Source_Ptr := Sloc (N2); begin if S1 = No_Location or else S2 = No_Location then return False; elsif S1 = Standard_Location then return S2 = Standard_Location; elsif S2 = Standard_Location then return False; end if; return Get_Code_Unit (N1) = Get_Code_Unit (N2); end In_Same_Code_Unit; --------------------------- -- In_Same_Extended_Unit -- --------------------------- function In_Same_Extended_Unit (N1, N2 : Node_Or_Entity_Id) return Boolean is begin return Check_Same_Extended_Unit (Sloc (N1), Sloc (N2)) /= No; end In_Same_Extended_Unit; function In_Same_Extended_Unit (S1, S2 : Source_Ptr) return Boolean is begin return Check_Same_Extended_Unit (S1, S2) /= No; end In_Same_Extended_Unit; ------------------------- -- In_Same_Source_Unit -- ------------------------- function In_Same_Source_Unit (N1, N2 : Node_Or_Entity_Id) return Boolean is S1 : constant Source_Ptr := Sloc (N1); S2 : constant Source_Ptr := Sloc (N2); begin if S1 = No_Location or else S2 = No_Location then return False; elsif S1 = Standard_Location then return S2 = Standard_Location; elsif S2 = Standard_Location then return False; end if; return Get_Source_Unit (N1) = Get_Source_Unit (N2); end In_Same_Source_Unit; ----------------------------- -- Increment_Serial_Number -- ----------------------------- function Increment_Serial_Number return Nat is TSN : Int renames Units.Table (Current_Sem_Unit).Serial_Number; begin TSN := TSN + 1; return TSN; end Increment_Serial_Number; ---------------- -- Initialize -- ---------------- procedure Initialize is begin Linker_Option_Lines.Init; Notes.Init; Load_Stack.Init; Units.Init; Compilation_Switches.Init; end Initialize; --------------- -- Is_Loaded -- --------------- function Is_Loaded (Uname : Unit_Name_Type) return Boolean is begin for Unum in Units.First .. Units.Last loop if Uname = Unit_Name (Unum) then return True; end if; end loop; return False; end Is_Loaded; --------------- -- Last_Unit -- --------------- function Last_Unit return Unit_Number_Type is begin return Units.Last; end Last_Unit; ---------- -- List -- ---------- procedure List (File_Names_Only : Boolean := False) is separate; ---------- -- Lock -- ---------- procedure Lock is begin Linker_Option_Lines.Release; Linker_Option_Lines.Locked := True; Load_Stack.Release; Load_Stack.Locked := True; Units.Release; Units.Locked := True; end Lock; --------------- -- Num_Units -- --------------- function Num_Units return Nat is begin return Int (Units.Last) - Int (Main_Unit) + 1; end Num_Units; ----------------- -- Remove_Unit -- ----------------- procedure Remove_Unit (U : Unit_Number_Type) is begin if U = Units.Last then Units.Decrement_Last; end if; end Remove_Unit; ---------------------------------- -- Replace_Linker_Option_String -- ---------------------------------- procedure Replace_Linker_Option_String (S : String_Id; Match_String : String) is begin if Match_String'Length > 0 then for J in 1 .. Linker_Option_Lines.Last loop String_To_Name_Buffer (Linker_Option_Lines.Table (J).Option); if Match_String = Name_Buffer (1 .. Match_String'Length) then Linker_Option_Lines.Table (J).Option := S; return; end if; end loop; end if; Store_Linker_Option_String (S); end Replace_Linker_Option_String; ---------- -- Sort -- ---------- procedure Sort (Tbl : in out Unit_Ref_Table) is separate; ------------------------------ -- Store_Compilation_Switch -- ------------------------------ procedure Store_Compilation_Switch (Switch : String) is begin if Switch_Storing_Enabled then Compilation_Switches.Increment_Last; Compilation_Switches.Table (Compilation_Switches.Last) := new String'(Switch); -- Fix up --RTS flag which has been transformed by the gcc driver -- into -fRTS if Switch'Last >= Switch'First + 4 and then Switch (Switch'First .. Switch'First + 4) = "-fRTS" then Compilation_Switches.Table (Compilation_Switches.Last) (Switch'First + 1) := '-'; end if; end if; end Store_Compilation_Switch; -------------------------------- -- Store_Linker_Option_String -- -------------------------------- procedure Store_Linker_Option_String (S : String_Id) is begin Linker_Option_Lines.Append ((Option => S, Unit => Current_Sem_Unit)); end Store_Linker_Option_String; ---------------- -- Store_Note -- ---------------- procedure Store_Note (N : Node_Id) is Sfile : constant Source_File_Index := Get_Source_File_Index (Sloc (N)); begin -- Notes for a generic are emitted when processing the template, never -- in instances. if In_Extended_Main_Code_Unit (N) and then Instance (Sfile) = No_Instance_Id then Notes.Append (N); end if; end Store_Note; ------------------------------- -- Synchronize_Serial_Number -- ------------------------------- procedure Synchronize_Serial_Number is TSN : Int renames Units.Table (Current_Sem_Unit).Serial_Number; begin TSN := TSN + 1; end Synchronize_Serial_Number; --------------- -- Tree_Read -- --------------- procedure Tree_Read is N : Nat; S : String_Ptr; begin Units.Tree_Read; -- Read Compilation_Switches table. First release the memory occupied -- by the previously loaded switches. for J in Compilation_Switches.First .. Compilation_Switches.Last loop Free (Compilation_Switches.Table (J)); end loop; Tree_Read_Int (N); Compilation_Switches.Set_Last (N); for J in 1 .. N loop Tree_Read_Str (S); Compilation_Switches.Table (J) := S; end loop; end Tree_Read; ---------------- -- Tree_Write -- ---------------- procedure Tree_Write is begin Units.Tree_Write; -- Write Compilation_Switches table Tree_Write_Int (Compilation_Switches.Last); for J in 1 .. Compilation_Switches.Last loop Tree_Write_Str (Compilation_Switches.Table (J)); end loop; end Tree_Write; ------------ -- Unlock -- ------------ procedure Unlock is begin Linker_Option_Lines.Locked := False; Load_Stack.Locked := False; Units.Locked := False; end Unlock; ----------------- -- Version_Get -- ----------------- function Version_Get (U : Unit_Number_Type) return Word_Hex_String is begin return Get_Hex_String (Units.Table (U).Version); end Version_Get; ------------------------ -- Version_Referenced -- ------------------------ procedure Version_Referenced (S : String_Id) is begin Version_Ref.Append (S); end Version_Referenced; --------------------- -- Write_Unit_Info -- --------------------- procedure Write_Unit_Info (Unit_Num : Unit_Number_Type; Item : Node_Id; Prefix : String := ""; Withs : Boolean := False) is begin Write_Str (Prefix); Write_Unit_Name (Unit_Name (Unit_Num)); Write_Str (", unit "); Write_Int (Int (Unit_Num)); Write_Str (", "); Write_Int (Int (Item)); Write_Str ("="); Write_Str (Node_Kind'Image (Nkind (Item))); if Item /= Original_Node (Item) then Write_Str (", orig = "); Write_Int (Int (Original_Node (Item))); Write_Str ("="); Write_Str (Node_Kind'Image (Nkind (Original_Node (Item)))); end if; Write_Eol; -- Skip the rest if we're not supposed to print the withs if not Withs then return; end if; declare Context_Item : Node_Id; begin Context_Item := First (Context_Items (Cunit (Unit_Num))); while Present (Context_Item) and then (Nkind (Context_Item) /= N_With_Clause or else Limited_Present (Context_Item)) loop Context_Item := Next (Context_Item); end loop; if Present (Context_Item) then Indent; Write_Line ("withs:"); Indent; while Present (Context_Item) loop if Nkind (Context_Item) = N_With_Clause and then not Limited_Present (Context_Item) then pragma Assert (Present (Library_Unit (Context_Item))); Write_Unit_Name (Unit_Name (Get_Cunit_Unit_Number (Library_Unit (Context_Item)))); if Implicit_With (Context_Item) then Write_Str (" -- implicit"); end if; Write_Eol; end if; Context_Item := Next (Context_Item); end loop; Outdent; Write_Line ("end withs"); Outdent; end if; end; end Write_Unit_Info; end Lib;