aboutsummaryrefslogtreecommitdiffstats
path: root/gcc-4.4.0/gcc/ada/exp_imgv.adb
diff options
context:
space:
mode:
Diffstat (limited to 'gcc-4.4.0/gcc/ada/exp_imgv.adb')
-rw-r--r--gcc-4.4.0/gcc/ada/exp_imgv.adb1257
1 files changed, 0 insertions, 1257 deletions
diff --git a/gcc-4.4.0/gcc/ada/exp_imgv.adb b/gcc-4.4.0/gcc/ada/exp_imgv.adb
deleted file mode 100644
index c04fb0f3a..000000000
--- a/gcc-4.4.0/gcc/ada/exp_imgv.adb
+++ /dev/null
@@ -1,1257 +0,0 @@
-------------------------------------------------------------------------------
--- --
--- GNAT COMPILER COMPONENTS --
--- --
--- E X P _ I M G V --
--- --
--- B o d y --
--- --
--- Copyright (C) 2001-2008, Free Software Foundation, Inc. --
--- --
--- GNAT is free software; you can redistribute it and/or modify it under --
--- terms of the GNU General Public License as published by the Free Soft- --
--- ware Foundation; either version 3, or (at your option) any later ver- --
--- sion. GNAT is distributed in the hope that it will be useful, but WITH- --
--- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY --
--- or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License --
--- for more details. You should have received a copy of the GNU General --
--- Public License distributed with GNAT; see file COPYING3. If not, go to --
--- http://www.gnu.org/licenses for a complete copy of the license. --
--- --
--- GNAT was originally developed by the GNAT team at New York University. --
--- Extensive contributions were provided by Ada Core Technologies Inc. --
--- --
-------------------------------------------------------------------------------
-
-with Atree; use Atree;
-with Casing; use Casing;
-with Checks; use Checks;
-with Einfo; use Einfo;
-with Exp_Util; use Exp_Util;
-with Lib; use Lib;
-with Namet; use Namet;
-with Nmake; use Nmake;
-with Nlists; use Nlists;
-with Opt; use Opt;
-with Rtsfind; use Rtsfind;
-with Sem_Res; use Sem_Res;
-with Sinfo; use Sinfo;
-with Snames; use Snames;
-with Stand; use Stand;
-with Stringt; use Stringt;
-with Tbuild; use Tbuild;
-with Ttypes; use Ttypes;
-with Uintp; use Uintp;
-
-package body Exp_Imgv is
-
- ------------------------------------
- -- Build_Enumeration_Image_Tables --
- ------------------------------------
-
- procedure Build_Enumeration_Image_Tables (E : Entity_Id; N : Node_Id) is
- Loc : constant Source_Ptr := Sloc (E);
- Str : String_Id;
- Ind : List_Id;
- Lit : Entity_Id;
- Nlit : Nat;
- Len : Nat;
- Estr : Entity_Id;
- Eind : Entity_Id;
- Ityp : Node_Id;
-
- begin
- -- Nothing to do for other than a root enumeration type
-
- if E /= Root_Type (E) then
- return;
-
- -- Nothing to do if pragma Discard_Names applies
-
- elsif Discard_Names (E) then
- return;
- end if;
-
- -- Otherwise tables need constructing
-
- Start_String;
- Ind := New_List;
- Lit := First_Literal (E);
- Len := 1;
- Nlit := 0;
-
- loop
- Append_To (Ind,
- Make_Integer_Literal (Loc, UI_From_Int (Len)));
-
- exit when No (Lit);
- Nlit := Nlit + 1;
-
- Get_Unqualified_Decoded_Name_String (Chars (Lit));
-
- if Name_Buffer (1) /= ''' then
- Set_Casing (All_Upper_Case);
- end if;
-
- Store_String_Chars (Name_Buffer (1 .. Name_Len));
- Len := Len + Int (Name_Len);
- Next_Literal (Lit);
- end loop;
-
- if Len < Int (2 ** (8 - 1)) then
- Ityp := Standard_Integer_8;
- elsif Len < Int (2 ** (16 - 1)) then
- Ityp := Standard_Integer_16;
- else
- Ityp := Standard_Integer_32;
- end if;
-
- Str := End_String;
-
- Estr :=
- Make_Defining_Identifier (Loc,
- Chars => New_External_Name (Chars (E), 'S'));
-
- Eind :=
- Make_Defining_Identifier (Loc,
- Chars => New_External_Name (Chars (E), 'N'));
-
- Set_Lit_Strings (E, Estr);
- Set_Lit_Indexes (E, Eind);
-
- Insert_Actions (N,
- New_List (
- Make_Object_Declaration (Loc,
- Defining_Identifier => Estr,
- Constant_Present => True,
- Object_Definition =>
- New_Occurrence_Of (Standard_String, Loc),
- Expression =>
- Make_String_Literal (Loc,
- Strval => Str)),
-
- Make_Object_Declaration (Loc,
- Defining_Identifier => Eind,
- Constant_Present => True,
-
- Object_Definition =>
- Make_Constrained_Array_Definition (Loc,
- Discrete_Subtype_Definitions => New_List (
- Make_Range (Loc,
- Low_Bound => Make_Integer_Literal (Loc, 0),
- High_Bound => Make_Integer_Literal (Loc, Nlit))),
- Component_Definition =>
- Make_Component_Definition (Loc,
- Aliased_Present => False,
- Subtype_Indication => New_Occurrence_Of (Ityp, Loc))),
-
- Expression =>
- Make_Aggregate (Loc,
- Expressions => Ind))),
- Suppress => All_Checks);
- end Build_Enumeration_Image_Tables;
-
- ----------------------------
- -- Expand_Image_Attribute --
- ----------------------------
-
- -- For all cases other than user defined enumeration types, the scheme
- -- is as follows. First we insert the following code:
-
- -- Snn : String (1 .. rt'Width);
- -- Pnn : Natural;
- -- Image_xx (tv, Snn, Pnn [,pm]);
- --
- -- and then Expr is replaced by Snn (1 .. Pnn)
-
- -- In the above expansion:
-
- -- rt is the root type of the expression
- -- tv is the expression with the value, usually a type conversion
- -- pm is an extra parameter present in some cases
-
- -- The following table shows tv, xx, and (if used) pm for the various
- -- possible types of the argument:
-
- -- For types whose root type is Character
- -- xx = Character
- -- tv = Character (Expr)
-
- -- For types whose root type is Boolean
- -- xx = Boolean
- -- tv = Boolean (Expr)
-
- -- For signed integer types with size <= Integer'Size
- -- xx = Integer
- -- tv = Integer (Expr)
-
- -- For other signed integer types
- -- xx = Long_Long_Integer
- -- tv = Long_Long_Integer (Expr)
-
- -- For modular types with modulus <= System.Unsigned_Types.Unsigned
- -- xx = Unsigned
- -- tv = System.Unsigned_Types.Unsigned (Expr)
-
- -- For other modular integer types
- -- xx = Long_Long_Unsigned
- -- tv = System.Unsigned_Types.Long_Long_Unsigned (Expr)
-
- -- For types whose root type is Wide_Character
- -- xx = Wide_Character
- -- tv = Wide_Character (Expr)
- -- pm = Boolean, true if Ada 2005 mode, False otherwise
-
- -- For types whose root type is Wide_Wide_Character
- -- xx = Wide_Wide_Character
- -- tv = Wide_Wide_Character (Expr)
-
- -- For floating-point types
- -- xx = Floating_Point
- -- tv = Long_Long_Float (Expr)
- -- pm = typ'Digits (typ = subtype of expression)
-
- -- For ordinary fixed-point types
- -- xx = Ordinary_Fixed_Point
- -- tv = Long_Long_Float (Expr)
- -- pm = typ'Aft (typ = subtype of expression)
-
- -- For decimal fixed-point types with size = Integer'Size
- -- xx = Decimal
- -- tv = Integer (Expr)
- -- pm = typ'Scale (typ = subtype of expression)
-
- -- For decimal fixed-point types with size > Integer'Size
- -- xx = Long_Long_Decimal
- -- tv = Long_Long_Integer?(Expr) [convert with no scaling]
- -- pm = typ'Scale (typ = subtype of expression)
-
- -- For enumeration types other than those declared packages Standard
- -- or System, Snn, Pnn, are expanded as above, but the call looks like:
-
- -- Image_Enumeration_NN (rt'Pos (X), Snn, Pnn, typS, typI'Address)
-
- -- where rt is the root type of the expression, and typS and typI are
- -- the entities constructed as described in the spec for the procedure
- -- Build_Enumeration_Image_Tables and NN is 32/16/8 depending on the
- -- element type of Lit_Indexes. The rewriting of the expression to
- -- Snn (1 .. Pnn) then occurs as in the other cases. A special case is
- -- when pragma Discard_Names applies, in which case we replace expr by:
-
- -- Missing ???
-
- procedure Expand_Image_Attribute (N : Node_Id) is
- Loc : constant Source_Ptr := Sloc (N);
- Exprs : constant List_Id := Expressions (N);
- Pref : constant Node_Id := Prefix (N);
- Ptyp : constant Entity_Id := Entity (Pref);
- Rtyp : constant Entity_Id := Root_Type (Ptyp);
- Expr : constant Node_Id := Relocate_Node (First (Exprs));
- Imid : RE_Id;
- Tent : Entity_Id;
- Ttyp : Entity_Id;
- Proc_Ent : Entity_Id;
- Enum_Case : Boolean;
-
- Arg_List : List_Id;
- -- List of arguments for run-time procedure call
-
- Ins_List : List_Id;
- -- List of actions to be inserted
-
- Snn : constant Entity_Id :=
- Make_Defining_Identifier (Loc,
- Chars => New_Internal_Name ('S'));
-
- Pnn : constant Entity_Id :=
- Make_Defining_Identifier (Loc,
- Chars => New_Internal_Name ('P'));
-
- begin
- -- Build declarations of Snn and Pnn to be inserted
-
- Ins_List := New_List (
-
- -- Snn : String (1 .. typ'Width);
-
- Make_Object_Declaration (Loc,
- Defining_Identifier => Snn,
- Object_Definition =>
- Make_Subtype_Indication (Loc,
- Subtype_Mark => New_Occurrence_Of (Standard_String, Loc),
- Constraint =>
- Make_Index_Or_Discriminant_Constraint (Loc,
- Constraints => New_List (
- Make_Range (Loc,
- Low_Bound => Make_Integer_Literal (Loc, 1),
- High_Bound =>
- Make_Attribute_Reference (Loc,
- Prefix => New_Occurrence_Of (Rtyp, Loc),
- Attribute_Name => Name_Width)))))),
-
- -- Pnn : Natural;
-
- Make_Object_Declaration (Loc,
- Defining_Identifier => Pnn,
- Object_Definition => New_Occurrence_Of (Standard_Natural, Loc)));
-
- -- Set Imid (RE_Id of procedure to call), and Tent, target for the
- -- type conversion of the first argument for all possibilities.
-
- Enum_Case := False;
-
- if Rtyp = Standard_Boolean then
- Imid := RE_Image_Boolean;
- Tent := Rtyp;
-
- elsif Rtyp = Standard_Character then
- Imid := RE_Image_Character;
- Tent := Rtyp;
-
- elsif Rtyp = Standard_Wide_Character then
- Imid := RE_Image_Wide_Character;
- Tent := Rtyp;
-
- elsif Rtyp = Standard_Wide_Wide_Character then
- Imid := RE_Image_Wide_Wide_Character;
- Tent := Rtyp;
-
- elsif Is_Signed_Integer_Type (Rtyp) then
- if Esize (Rtyp) <= Esize (Standard_Integer) then
- Imid := RE_Image_Integer;
- Tent := Standard_Integer;
- else
- Imid := RE_Image_Long_Long_Integer;
- Tent := Standard_Long_Long_Integer;
- end if;
-
- elsif Is_Modular_Integer_Type (Rtyp) then
- if Modulus (Rtyp) <= Modulus (RTE (RE_Unsigned)) then
- Imid := RE_Image_Unsigned;
- Tent := RTE (RE_Unsigned);
- else
- Imid := RE_Image_Long_Long_Unsigned;
- Tent := RTE (RE_Long_Long_Unsigned);
- end if;
-
- elsif Is_Decimal_Fixed_Point_Type (Rtyp) then
- if UI_To_Int (Esize (Rtyp)) <= Standard_Integer_Size then
- Imid := RE_Image_Decimal;
- Tent := Standard_Integer;
- else
- Imid := RE_Image_Long_Long_Decimal;
- Tent := Standard_Long_Long_Integer;
- end if;
-
- elsif Is_Ordinary_Fixed_Point_Type (Rtyp) then
- Imid := RE_Image_Ordinary_Fixed_Point;
- Tent := Standard_Long_Long_Float;
-
- elsif Is_Floating_Point_Type (Rtyp) then
- Imid := RE_Image_Floating_Point;
- Tent := Standard_Long_Long_Float;
-
- -- Only other possibility is user defined enumeration type
-
- else
- if Discard_Names (First_Subtype (Ptyp))
- or else No (Lit_Strings (Root_Type (Ptyp)))
- then
- -- When pragma Discard_Names applies to the first subtype,
- -- then build (Pref'Pos)'Img.
-
- Rewrite (N,
- Make_Attribute_Reference (Loc,
- Prefix =>
- Make_Attribute_Reference (Loc,
- Prefix => Pref,
- Attribute_Name => Name_Pos,
- Expressions => New_List (Expr)),
- Attribute_Name =>
- Name_Img));
- Analyze_And_Resolve (N, Standard_String);
- return;
-
- else
- -- Here for enumeration type case
-
- Ttyp := Component_Type (Etype (Lit_Indexes (Rtyp)));
-
- if Ttyp = Standard_Integer_8 then
- Imid := RE_Image_Enumeration_8;
- elsif Ttyp = Standard_Integer_16 then
- Imid := RE_Image_Enumeration_16;
- else
- Imid := RE_Image_Enumeration_32;
- end if;
-
- -- Apply a validity check, since it is a bit drastic to get a
- -- completely junk image value for an invalid value.
-
- if not Expr_Known_Valid (Expr) then
- Insert_Valid_Check (Expr);
- end if;
-
- Enum_Case := True;
- end if;
- end if;
-
- -- Build first argument for call
-
- if Enum_Case then
- Arg_List := New_List (
- Make_Attribute_Reference (Loc,
- Attribute_Name => Name_Pos,
- Prefix => New_Occurrence_Of (Ptyp, Loc),
- Expressions => New_List (Expr)));
-
- else
- Arg_List := New_List (Convert_To (Tent, Expr));
- end if;
-
- -- Append Snn, Pnn arguments
-
- Append_To (Arg_List, New_Occurrence_Of (Snn, Loc));
- Append_To (Arg_List, New_Occurrence_Of (Pnn, Loc));
-
- -- Get entity of procedure to call
-
- Proc_Ent := RTE (Imid);
-
- -- If the procedure entity is empty, that means we have a case in
- -- no run time mode where the operation is not allowed, and an
- -- appropriate diagnostic has already been issued.
-
- if No (Proc_Ent) then
- return;
- end if;
-
- -- Otherwise complete preparation of arguments for run-time call
-
- -- Add extra arguments for Enumeration case
-
- if Enum_Case then
- Append_To (Arg_List, New_Occurrence_Of (Lit_Strings (Rtyp), Loc));
- Append_To (Arg_List,
- Make_Attribute_Reference (Loc,
- Prefix => New_Occurrence_Of (Lit_Indexes (Rtyp), Loc),
- Attribute_Name => Name_Address));
-
- -- For floating-point types, append Digits argument
-
- elsif Is_Floating_Point_Type (Rtyp) then
- Append_To (Arg_List,
- Make_Attribute_Reference (Loc,
- Prefix => New_Reference_To (Ptyp, Loc),
- Attribute_Name => Name_Digits));
-
- -- For ordinary fixed-point types, append Aft parameter
-
- elsif Is_Ordinary_Fixed_Point_Type (Rtyp) then
- Append_To (Arg_List,
- Make_Attribute_Reference (Loc,
- Prefix => New_Reference_To (Ptyp, Loc),
- Attribute_Name => Name_Aft));
-
- -- For decimal, append Scale and also set to do literal conversion
-
- elsif Is_Decimal_Fixed_Point_Type (Rtyp) then
- Append_To (Arg_List,
- Make_Attribute_Reference (Loc,
- Prefix => New_Reference_To (Ptyp, Loc),
- Attribute_Name => Name_Scale));
-
- Set_Conversion_OK (First (Arg_List));
- Set_Etype (First (Arg_List), Tent);
-
- -- For Wide_Character, append Ada 2005 indication
-
- elsif Rtyp = Standard_Wide_Character then
- Append_To (Arg_List,
- New_Reference_To (Boolean_Literals (Ada_Version >= Ada_05), Loc));
- end if;
-
- -- Now append the procedure call to the insert list
-
- Append_To (Ins_List,
- Make_Procedure_Call_Statement (Loc,
- Name => New_Reference_To (Proc_Ent, Loc),
- Parameter_Associations => Arg_List));
-
- -- Insert declarations of Snn, Pnn, and the procedure call. We suppress
- -- checks because we are sure that everything is in range at this stage.
-
- Insert_Actions (N, Ins_List, Suppress => All_Checks);
-
- -- Final step is to rewrite the expression as a slice and analyze,
- -- again with no checks, since we are sure that everything is OK.
-
- Rewrite (N,
- Make_Slice (Loc,
- Prefix => New_Occurrence_Of (Snn, Loc),
- Discrete_Range =>
- Make_Range (Loc,
- Low_Bound => Make_Integer_Literal (Loc, 1),
- High_Bound => New_Occurrence_Of (Pnn, Loc))));
-
- Analyze_And_Resolve (N, Standard_String, Suppress => All_Checks);
- end Expand_Image_Attribute;
-
- ----------------------------
- -- Expand_Value_Attribute --
- ----------------------------
-
- -- For scalar types derived from Boolean, Character and integer types
- -- in package Standard, typ'Value (X) expands into:
-
- -- btyp (Value_xx (X))
-
- -- where btyp is he base type of the prefix
-
- -- For types whose root type is Character
- -- xx = Character
-
- -- For types whose root type is Wide_Character
- -- xx = Wide_Character
-
- -- For types whose root type is Wide_Wide_Character
- -- xx = Wide_Wide_Character
-
- -- For types whose root type is Boolean
- -- xx = Boolean
-
- -- For signed integer types with size <= Integer'Size
- -- xx = Integer
-
- -- For other signed integer types
- -- xx = Long_Long_Integer
-
- -- For modular types with modulus <= System.Unsigned_Types.Unsigned
- -- xx = Unsigned
-
- -- For other modular integer types
- -- xx = Long_Long_Unsigned
-
- -- For floating-point types and ordinary fixed-point types
- -- xx = Real
-
- -- For Wide_[Wide_]Character types, typ'Value (X) expands into:
-
- -- btyp (Value_xx (X, EM))
-
- -- where btyp is the base type of the prefix, and EM is the encoding method
-
- -- For decimal types with size <= Integer'Size, typ'Value (X)
- -- expands into
-
- -- btyp?(Value_Decimal (X, typ'Scale));
-
- -- For all other decimal types, typ'Value (X) expands into
-
- -- btyp?(Value_Long_Long_Decimal (X, typ'Scale))
-
- -- For enumeration types other than those derived from types Boolean,
- -- Character, Wide_[Wide_]Character in Standard, typ'Value (X) expands to:
-
- -- Enum'Val (Value_Enumeration_NN (typS, typI'Address, Num, X))
-
- -- where typS and typI and the Lit_Strings and Lit_Indexes entities
- -- from T's root type entity, and Num is Enum'Pos (Enum'Last). The
- -- Value_Enumeration_NN function will search the tables looking for
- -- X and return the position number in the table if found which is
- -- used to provide the result of 'Value (using Enum'Val). If the
- -- value is not found Constraint_Error is raised. The suffix _NN
- -- depends on the element type of typI.
-
- procedure Expand_Value_Attribute (N : Node_Id) is
- Loc : constant Source_Ptr := Sloc (N);
- Typ : constant Entity_Id := Etype (N);
- Btyp : constant Entity_Id := Base_Type (Typ);
- Rtyp : constant Entity_Id := Root_Type (Typ);
- Exprs : constant List_Id := Expressions (N);
- Vid : RE_Id;
- Args : List_Id;
- Func : RE_Id;
- Ttyp : Entity_Id;
-
- begin
- Args := Exprs;
-
- if Rtyp = Standard_Character then
- Vid := RE_Value_Character;
-
- elsif Rtyp = Standard_Boolean then
- Vid := RE_Value_Boolean;
-
- elsif Rtyp = Standard_Wide_Character then
- Vid := RE_Value_Wide_Character;
-
- Append_To (Args,
- Make_Integer_Literal (Loc,
- Intval => Int (Wide_Character_Encoding_Method)));
-
- elsif Rtyp = Standard_Wide_Wide_Character then
- Vid := RE_Value_Wide_Wide_Character;
-
- Append_To (Args,
- Make_Integer_Literal (Loc,
- Intval => Int (Wide_Character_Encoding_Method)));
-
- elsif Rtyp = Base_Type (Standard_Short_Short_Integer)
- or else Rtyp = Base_Type (Standard_Short_Integer)
- or else Rtyp = Base_Type (Standard_Integer)
- then
- Vid := RE_Value_Integer;
-
- elsif Is_Signed_Integer_Type (Rtyp) then
- Vid := RE_Value_Long_Long_Integer;
-
- elsif Is_Modular_Integer_Type (Rtyp) then
- if Modulus (Rtyp) <= Modulus (RTE (RE_Unsigned)) then
- Vid := RE_Value_Unsigned;
- else
- Vid := RE_Value_Long_Long_Unsigned;
- end if;
-
- elsif Is_Decimal_Fixed_Point_Type (Rtyp) then
- if UI_To_Int (Esize (Rtyp)) <= Standard_Integer_Size then
- Vid := RE_Value_Decimal;
- else
- Vid := RE_Value_Long_Long_Decimal;
- end if;
-
- Append_To (Args,
- Make_Attribute_Reference (Loc,
- Prefix => New_Reference_To (Typ, Loc),
- Attribute_Name => Name_Scale));
-
- Rewrite (N,
- OK_Convert_To (Btyp,
- Make_Function_Call (Loc,
- Name => New_Reference_To (RTE (Vid), Loc),
- Parameter_Associations => Args)));
-
- Set_Etype (N, Btyp);
- Analyze_And_Resolve (N, Btyp);
- return;
-
- elsif Is_Real_Type (Rtyp) then
- Vid := RE_Value_Real;
-
- -- Only other possibility is user defined enumeration type
-
- else
- pragma Assert (Is_Enumeration_Type (Rtyp));
-
- -- Case of pragma Discard_Names, transform the Value
- -- attribute to Btyp'Val (Long_Long_Integer'Value (Args))
-
- if Discard_Names (First_Subtype (Typ))
- or else No (Lit_Strings (Rtyp))
- then
- Rewrite (N,
- Make_Attribute_Reference (Loc,
- Prefix => New_Reference_To (Btyp, Loc),
- Attribute_Name => Name_Val,
- Expressions => New_List (
- Make_Attribute_Reference (Loc,
- Prefix =>
- New_Occurrence_Of (Standard_Long_Long_Integer, Loc),
- Attribute_Name => Name_Value,
- Expressions => Args))));
-
- Analyze_And_Resolve (N, Btyp);
-
- -- Here for normal case where we have enumeration tables, this
- -- is where we build
-
- -- T'Val (Value_Enumeration_NN (typS, typI'Address, Num, X))
-
- else
- Ttyp := Component_Type (Etype (Lit_Indexes (Rtyp)));
-
- if Ttyp = Standard_Integer_8 then
- Func := RE_Value_Enumeration_8;
- elsif Ttyp = Standard_Integer_16 then
- Func := RE_Value_Enumeration_16;
- else
- Func := RE_Value_Enumeration_32;
- end if;
-
- Prepend_To (Args,
- Make_Attribute_Reference (Loc,
- Prefix => New_Occurrence_Of (Rtyp, Loc),
- Attribute_Name => Name_Pos,
- Expressions => New_List (
- Make_Attribute_Reference (Loc,
- Prefix => New_Occurrence_Of (Rtyp, Loc),
- Attribute_Name => Name_Last))));
-
- Prepend_To (Args,
- Make_Attribute_Reference (Loc,
- Prefix => New_Occurrence_Of (Lit_Indexes (Rtyp), Loc),
- Attribute_Name => Name_Address));
-
- Prepend_To (Args,
- New_Occurrence_Of (Lit_Strings (Rtyp), Loc));
-
- Rewrite (N,
- Make_Attribute_Reference (Loc,
- Prefix => New_Reference_To (Typ, Loc),
- Attribute_Name => Name_Val,
- Expressions => New_List (
- Make_Function_Call (Loc,
- Name =>
- New_Reference_To (RTE (Func), Loc),
- Parameter_Associations => Args))));
-
- Analyze_And_Resolve (N, Btyp);
- end if;
-
- return;
- end if;
-
- -- Fall through for all cases except user defined enumeration type
- -- and decimal types, with Vid set to the Id of the entity for the
- -- Value routine and Args set to the list of parameters for the call.
-
- -- Compiling package Ada.Tags under No_Run_Time_Mode we disable the
- -- expansion of the attribute into the function call statement to avoid
- -- generating spurious errors caused by the use of Integer_Address'Value
- -- in our implementation of Ada.Tags.Internal_Tag
-
- -- Seems like a bit of a kludge, there should be a better way ???
-
- -- There is a better way, you should also test RTE_Available ???
-
- if No_Run_Time_Mode
- and then Rtyp = RTE (RE_Integer_Address)
- and then RTU_Loaded (Ada_Tags)
- and then Cunit_Entity (Current_Sem_Unit)
- = Body_Entity (RTU_Entity (Ada_Tags))
- then
- Rewrite (N,
- Unchecked_Convert_To (Rtyp,
- Make_Integer_Literal (Loc, Uint_0)));
- else
- Rewrite (N,
- Convert_To (Btyp,
- Make_Function_Call (Loc,
- Name => New_Reference_To (RTE (Vid), Loc),
- Parameter_Associations => Args)));
- end if;
-
- Analyze_And_Resolve (N, Btyp);
- end Expand_Value_Attribute;
-
- ---------------------------------
- -- Expand_Wide_Image_Attribute --
- ---------------------------------
-
- -- We expand typ'Wide_Image (X) as follows. First we insert this code:
-
- -- Rnn : Wide_String (1 .. rt'Wide_Width);
- -- Lnn : Natural;
- -- String_To_Wide_String
- -- (typ'Image (Expr), Rnn, Lnn, Wide_Character_Encoding_Method);
-
- -- where rt is the root type of the prefix type
-
- -- Now we replace the Wide_Image reference by
-
- -- Rnn (1 .. Lnn)
-
- -- This works in all cases because String_To_Wide_String converts any
- -- wide character escape sequences resulting from the Image call to the
- -- proper Wide_Character equivalent
-
- -- not quite right for typ = Wide_Character ???
-
- procedure Expand_Wide_Image_Attribute (N : Node_Id) is
- Loc : constant Source_Ptr := Sloc (N);
- Rtyp : constant Entity_Id := Root_Type (Entity (Prefix (N)));
-
- Rnn : constant Entity_Id :=
- Make_Defining_Identifier (Loc,
- Chars => New_Internal_Name ('S'));
-
- Lnn : constant Entity_Id :=
- Make_Defining_Identifier (Loc,
- Chars => New_Internal_Name ('P'));
-
- begin
- Insert_Actions (N, New_List (
-
- -- Rnn : Wide_String (1 .. base_typ'Width);
-
- Make_Object_Declaration (Loc,
- Defining_Identifier => Rnn,
- Object_Definition =>
- Make_Subtype_Indication (Loc,
- Subtype_Mark =>
- New_Occurrence_Of (Standard_Wide_String, Loc),
- Constraint =>
- Make_Index_Or_Discriminant_Constraint (Loc,
- Constraints => New_List (
- Make_Range (Loc,
- Low_Bound => Make_Integer_Literal (Loc, 1),
- High_Bound =>
- Make_Attribute_Reference (Loc,
- Prefix => New_Occurrence_Of (Rtyp, Loc),
- Attribute_Name => Name_Wide_Width)))))),
-
- -- Lnn : Natural;
-
- Make_Object_Declaration (Loc,
- Defining_Identifier => Lnn,
- Object_Definition => New_Occurrence_Of (Standard_Natural, Loc)),
-
- -- String_To_Wide_String
- -- (typ'Image (X), Rnn, Lnn, Wide_Character_Encoding_Method);
-
- Make_Procedure_Call_Statement (Loc,
- Name =>
- New_Reference_To (RTE (RE_String_To_Wide_String), Loc),
-
- Parameter_Associations => New_List (
- Make_Attribute_Reference (Loc,
- Prefix => Prefix (N),
- Attribute_Name => Name_Image,
- Expressions => Expressions (N)),
- New_Reference_To (Rnn, Loc),
- New_Reference_To (Lnn, Loc),
- Make_Integer_Literal (Loc,
- Intval => Int (Wide_Character_Encoding_Method))))),
-
- -- Suppress checks because we know everything is properly in range
-
- Suppress => All_Checks);
-
- -- Final step is to rewrite the expression as a slice and analyze,
- -- again with no checks, since we are sure that everything is OK.
-
- Rewrite (N,
- Make_Slice (Loc,
- Prefix => New_Occurrence_Of (Rnn, Loc),
- Discrete_Range =>
- Make_Range (Loc,
- Low_Bound => Make_Integer_Literal (Loc, 1),
- High_Bound => New_Occurrence_Of (Lnn, Loc))));
-
- Analyze_And_Resolve (N, Standard_Wide_String, Suppress => All_Checks);
- end Expand_Wide_Image_Attribute;
-
- --------------------------------------
- -- Expand_Wide_Wide_Image_Attribute --
- --------------------------------------
-
- -- We expand typ'Wide_Wide_Image (X) as follows. First we insert this code:
-
- -- Rnn : Wide_Wide_String (1 .. rt'Wide_Wide_Width);
- -- Lnn : Natural;
- -- String_To_Wide_Wide_String
- -- (typ'Image (Expr), Rnn, Lnn, Wide_Character_Encoding_Method);
-
- -- where rt is the root type of the prefix type
-
- -- Now we replace the Wide_Wide_Image reference by
-
- -- Rnn (1 .. Lnn)
-
- -- This works in all cases because String_To_Wide_Wide_String converts any
- -- wide character escape sequences resulting from the Image call to the
- -- proper Wide_Wide_Character equivalent
-
- -- not quite right for typ = Wide_Wide_Character ???
-
- procedure Expand_Wide_Wide_Image_Attribute (N : Node_Id) is
- Loc : constant Source_Ptr := Sloc (N);
- Rtyp : constant Entity_Id := Root_Type (Entity (Prefix (N)));
-
- Rnn : constant Entity_Id :=
- Make_Defining_Identifier (Loc,
- Chars => New_Internal_Name ('S'));
-
- Lnn : constant Entity_Id :=
- Make_Defining_Identifier (Loc,
- Chars => New_Internal_Name ('P'));
-
- begin
- Insert_Actions (N, New_List (
-
- -- Rnn : Wide_Wide_String (1 .. rt'Wide_Wide_Width);
-
- Make_Object_Declaration (Loc,
- Defining_Identifier => Rnn,
- Object_Definition =>
- Make_Subtype_Indication (Loc,
- Subtype_Mark =>
- New_Occurrence_Of (Standard_Wide_Wide_String, Loc),
- Constraint =>
- Make_Index_Or_Discriminant_Constraint (Loc,
- Constraints => New_List (
- Make_Range (Loc,
- Low_Bound => Make_Integer_Literal (Loc, 1),
- High_Bound =>
- Make_Attribute_Reference (Loc,
- Prefix => New_Occurrence_Of (Rtyp, Loc),
- Attribute_Name => Name_Wide_Wide_Width)))))),
-
- -- Lnn : Natural;
-
- Make_Object_Declaration (Loc,
- Defining_Identifier => Lnn,
- Object_Definition => New_Occurrence_Of (Standard_Natural, Loc)),
-
- -- String_To_Wide_Wide_String
- -- (typ'Image (X), Rnn, Lnn, Wide_Character_Encoding_Method);
-
- Make_Procedure_Call_Statement (Loc,
- Name =>
- New_Reference_To (RTE (RE_String_To_Wide_Wide_String), Loc),
-
- Parameter_Associations => New_List (
- Make_Attribute_Reference (Loc,
- Prefix => Prefix (N),
- Attribute_Name => Name_Image,
- Expressions => Expressions (N)),
- New_Reference_To (Rnn, Loc),
- New_Reference_To (Lnn, Loc),
- Make_Integer_Literal (Loc,
- Intval => Int (Wide_Character_Encoding_Method))))),
-
- -- Suppress checks because we know everything is properly in range
-
- Suppress => All_Checks);
-
- -- Final step is to rewrite the expression as a slice and analyze,
- -- again with no checks, since we are sure that everything is OK.
-
- Rewrite (N,
- Make_Slice (Loc,
- Prefix => New_Occurrence_Of (Rnn, Loc),
- Discrete_Range =>
- Make_Range (Loc,
- Low_Bound => Make_Integer_Literal (Loc, 1),
- High_Bound => New_Occurrence_Of (Lnn, Loc))));
-
- Analyze_And_Resolve
- (N, Standard_Wide_Wide_String, Suppress => All_Checks);
- end Expand_Wide_Wide_Image_Attribute;
-
- ----------------------------
- -- Expand_Width_Attribute --
- ----------------------------
-
- -- The processing here also handles the case of Wide_[Wide_]Width. With the
- -- exceptions noted, the processing is identical
-
- -- For scalar types derived from Boolean, character and integer types
- -- in package Standard. Note that the Width attribute is computed at
- -- compile time for all cases except those involving non-static sub-
- -- types. For such subtypes, typ'[Wide_[Wide_]]Width expands into:
-
- -- Result_Type (xx (yy (Ptyp'First), yy (Ptyp'Last)))
-
- -- where
-
- -- For types whose root type is Character
- -- xx = Width_Character
- -- yy = Character
-
- -- For types whose root type is Wide_Character
- -- xx = Wide_Width_Character
- -- yy = Character
-
- -- For types whose root type is Wide_Wide_Character
- -- xx = Wide_Wide_Width_Character
- -- yy = Character
-
- -- For types whose root type is Boolean
- -- xx = Width_Boolean
- -- yy = Boolean
-
- -- For signed integer types
- -- xx = Width_Long_Long_Integer
- -- yy = Long_Long_Integer
-
- -- For modular integer types
- -- xx = Width_Long_Long_Unsigned
- -- yy = Long_Long_Unsigned
-
- -- For types derived from Wide_Character, typ'Width expands into
-
- -- Result_Type (Width_Wide_Character (
- -- Wide_Character (typ'First),
- -- Wide_Character (typ'Last),
-
- -- and typ'Wide_Width expands into:
-
- -- Result_Type (Wide_Width_Wide_Character (
- -- Wide_Character (typ'First),
- -- Wide_Character (typ'Last));
-
- -- and typ'Wide_Wide_Width expands into
-
- -- Result_Type (Wide_Wide_Width_Wide_Character (
- -- Wide_Character (typ'First),
- -- Wide_Character (typ'Last));
-
- -- For types derived from Wide_Wide_Character, typ'Width expands into
-
- -- Result_Type (Width_Wide_Wide_Character (
- -- Wide_Wide_Character (typ'First),
- -- Wide_Wide_Character (typ'Last),
-
- -- and typ'Wide_Width expands into:
-
- -- Result_Type (Wide_Width_Wide_Wide_Character (
- -- Wide_Wide_Character (typ'First),
- -- Wide_Wide_Character (typ'Last));
-
- -- and typ'Wide_Wide_Width expands into
-
- -- Result_Type (Wide_Wide_Width_Wide_Wide_Char (
- -- Wide_Wide_Character (typ'First),
- -- Wide_Wide_Character (typ'Last));
-
- -- For real types, typ'Width and typ'Wide_[Wide_]Width expand into
-
- -- if Ptyp'First > Ptyp'Last then 0 else btyp'Width end if
-
- -- where btyp is the base type. This looks recursive but it isn't
- -- because the base type is always static, and hence the expression
- -- in the else is reduced to an integer literal.
-
- -- For user defined enumeration types, typ'Width expands into
-
- -- Result_Type (Width_Enumeration_NN
- -- (typS,
- -- typI'Address,
- -- typ'Pos (typ'First),
- -- typ'Pos (Typ'Last)));
-
- -- and typ'Wide_Width expands into:
-
- -- Result_Type (Wide_Width_Enumeration_NN
- -- (typS,
- -- typI,
- -- typ'Pos (typ'First),
- -- typ'Pos (Typ'Last))
- -- Wide_Character_Encoding_Method);
-
- -- and typ'Wide_Wide_Width expands into:
-
- -- Result_Type (Wide_Wide_Width_Enumeration_NN
- -- (typS,
- -- typI,
- -- typ'Pos (typ'First),
- -- typ'Pos (Typ'Last))
- -- Wide_Character_Encoding_Method);
-
- -- where typS and typI are the enumeration image strings and
- -- indexes table, as described in Build_Enumeration_Image_Tables.
- -- NN is 8/16/32 for depending on the element type for typI.
-
- procedure Expand_Width_Attribute (N : Node_Id; Attr : Atype := Normal) is
- Loc : constant Source_Ptr := Sloc (N);
- Typ : constant Entity_Id := Etype (N);
- Pref : constant Node_Id := Prefix (N);
- Ptyp : constant Entity_Id := Etype (Pref);
- Rtyp : constant Entity_Id := Root_Type (Ptyp);
- XX : RE_Id;
- YY : Entity_Id;
- Arglist : List_Id;
- Ttyp : Entity_Id;
-
- begin
- -- Types derived from Standard.Boolean
-
- if Rtyp = Standard_Boolean then
- XX := RE_Width_Boolean;
- YY := Rtyp;
-
- -- Types derived from Standard.Character
-
- elsif Rtyp = Standard_Character then
- case Attr is
- when Normal => XX := RE_Width_Character;
- when Wide => XX := RE_Wide_Width_Character;
- when Wide_Wide => XX := RE_Wide_Wide_Width_Character;
- end case;
-
- YY := Rtyp;
-
- -- Types derived from Standard.Wide_Character
-
- elsif Rtyp = Standard_Wide_Character then
- case Attr is
- when Normal => XX := RE_Width_Wide_Character;
- when Wide => XX := RE_Wide_Width_Wide_Character;
- when Wide_Wide => XX := RE_Wide_Wide_Width_Wide_Character;
- end case;
-
- YY := Rtyp;
-
- -- Types derived from Standard.Wide_Wide_Character
-
- elsif Rtyp = Standard_Wide_Wide_Character then
- case Attr is
- when Normal => XX := RE_Width_Wide_Wide_Character;
- when Wide => XX := RE_Wide_Width_Wide_Wide_Character;
- when Wide_Wide => XX := RE_Wide_Wide_Width_Wide_Wide_Char;
- end case;
-
- YY := Rtyp;
-
- -- Signed integer types
-
- elsif Is_Signed_Integer_Type (Rtyp) then
- XX := RE_Width_Long_Long_Integer;
- YY := Standard_Long_Long_Integer;
-
- -- Modular integer types
-
- elsif Is_Modular_Integer_Type (Rtyp) then
- XX := RE_Width_Long_Long_Unsigned;
- YY := RTE (RE_Long_Long_Unsigned);
-
- -- Real types
-
- elsif Is_Real_Type (Rtyp) then
-
- Rewrite (N,
- Make_Conditional_Expression (Loc,
- Expressions => New_List (
-
- Make_Op_Gt (Loc,
- Left_Opnd =>
- Make_Attribute_Reference (Loc,
- Prefix => New_Reference_To (Ptyp, Loc),
- Attribute_Name => Name_First),
-
- Right_Opnd =>
- Make_Attribute_Reference (Loc,
- Prefix => New_Reference_To (Ptyp, Loc),
- Attribute_Name => Name_Last)),
-
- Make_Integer_Literal (Loc, 0),
-
- Make_Attribute_Reference (Loc,
- Prefix => New_Reference_To (Base_Type (Ptyp), Loc),
- Attribute_Name => Name_Width))));
-
- Analyze_And_Resolve (N, Typ);
- return;
-
- -- User defined enumeration types
-
- else
- pragma Assert (Is_Enumeration_Type (Rtyp));
-
- if Discard_Names (Rtyp) then
-
- -- This is a configurable run-time, or else a restriction is in
- -- effect. In either case the attribute cannot be supported. Force
- -- a load error from Rtsfind to generate an appropriate message,
- -- as is done with other ZFP violations.
-
- declare
- pragma Warnings (Off); -- since Discard is unreferenced
- Discard : constant Entity_Id := RTE (RE_Null);
- pragma Warnings (On);
- begin
- return;
- end;
- end if;
-
- Ttyp := Component_Type (Etype (Lit_Indexes (Rtyp)));
-
- case Attr is
- when Normal =>
- if Ttyp = Standard_Integer_8 then
- XX := RE_Width_Enumeration_8;
- elsif Ttyp = Standard_Integer_16 then
- XX := RE_Width_Enumeration_16;
- else
- XX := RE_Width_Enumeration_32;
- end if;
-
- when Wide =>
- if Ttyp = Standard_Integer_8 then
- XX := RE_Wide_Width_Enumeration_8;
- elsif Ttyp = Standard_Integer_16 then
- XX := RE_Wide_Width_Enumeration_16;
- else
- XX := RE_Wide_Width_Enumeration_32;
- end if;
-
- when Wide_Wide =>
- if Ttyp = Standard_Integer_8 then
- XX := RE_Wide_Wide_Width_Enumeration_8;
- elsif Ttyp = Standard_Integer_16 then
- XX := RE_Wide_Wide_Width_Enumeration_16;
- else
- XX := RE_Wide_Wide_Width_Enumeration_32;
- end if;
- end case;
-
- Arglist :=
- New_List (
- New_Occurrence_Of (Lit_Strings (Rtyp), Loc),
-
- Make_Attribute_Reference (Loc,
- Prefix => New_Occurrence_Of (Lit_Indexes (Rtyp), Loc),
- Attribute_Name => Name_Address),
-
- Make_Attribute_Reference (Loc,
- Prefix => New_Reference_To (Ptyp, Loc),
- Attribute_Name => Name_Pos,
-
- Expressions => New_List (
- Make_Attribute_Reference (Loc,
- Prefix => New_Reference_To (Ptyp, Loc),
- Attribute_Name => Name_First))),
-
- Make_Attribute_Reference (Loc,
- Prefix => New_Reference_To (Ptyp, Loc),
- Attribute_Name => Name_Pos,
-
- Expressions => New_List (
- Make_Attribute_Reference (Loc,
- Prefix => New_Reference_To (Ptyp, Loc),
- Attribute_Name => Name_Last))));
-
- Rewrite (N,
- Convert_To (Typ,
- Make_Function_Call (Loc,
- Name => New_Reference_To (RTE (XX), Loc),
- Parameter_Associations => Arglist)));
-
- Analyze_And_Resolve (N, Typ);
- return;
- end if;
-
- -- If we fall through XX and YY are set
-
- Arglist := New_List (
- Convert_To (YY,
- Make_Attribute_Reference (Loc,
- Prefix => New_Reference_To (Ptyp, Loc),
- Attribute_Name => Name_First)),
-
- Convert_To (YY,
- Make_Attribute_Reference (Loc,
- Prefix => New_Reference_To (Ptyp, Loc),
- Attribute_Name => Name_Last)));
-
- Rewrite (N,
- Convert_To (Typ,
- Make_Function_Call (Loc,
- Name => New_Reference_To (RTE (XX), Loc),
- Parameter_Associations => Arglist)));
-
- Analyze_And_Resolve (N, Typ);
- end Expand_Width_Attribute;
-
-end Exp_Imgv;