+++ /dev/null
-------------------------------------------------------------------------------
--- --
--- GNAT COMPILER COMPONENTS --
--- --
--- E X P _ I M G V --
--- --
--- B o d y --
--- --
--- $Revision: 1.2.12.1 $
--- --
--- Copyright (C) 2001 Free Software Foundation, Inc. --
--- --
--- GNAT is free software; you can redistribute it and/or modify it under --
--- terms of the GNU General Public License as published by the Free Soft- --
--- ware Foundation; either version 2, or (at your option) any later ver- --
--- sion. GNAT is distributed in the hope that it will be useful, but WITH- --
--- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY --
--- or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License --
--- for more details. You should have received a copy of the GNU General --
--- Public License distributed with GNAT; see file COPYING. If not, write --
--- to the Free Software Foundation, 59 Temple Place - Suite 330, Boston, --
--- MA 02111-1307, USA. --
--- --
--- GNAT was originally developed by the GNAT team at New York University. --
--- Extensive contributions were provided by Ada Core Technologies Inc. --
--- --
-------------------------------------------------------------------------------
-
-with Atree; use Atree;
-with Casing; use Casing;
-with Checks; use Checks;
-with Einfo; use Einfo;
-with Exp_Util; use Exp_Util;
-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), 'I'));
-
- 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))),
- 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 non-enumeration types, and for enumeration types declared
- -- in packages Standard or System, typ'Image (Val) expands into:
-
- -- Image_xx (tp (Expr) [, pm])
-
- -- The name xx and type conversion tp (Expr) (called tv below) depend on
- -- the root type of Expr. The argument pm is an extra type dependent
- -- parameter only used in some cases as follows:
-
- -- 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 = Wide_Character_Encoding_Method
-
- -- For floating-point types
- -- xx = Floating_Point
- -- tv = Long_Long_Float (Expr)
- -- pm = typ'Digits
-
- -- For ordinary fixed-point types
- -- xx = Ordinary_Fixed_Point
- -- tv = Long_Long_Float (Expr)
- -- pm = typ'Aft
-
- -- For decimal fixed-point types with size = Integer'Size
- -- xx = Decimal
- -- tv = Integer (Expr)
- -- pm = typ'Scale
-
- -- For decimal fixed-point types with size > Integer'Size
- -- xx = Long_Long_Decimal
- -- tv = Long_Long_Integer (Expr)
- -- pm = typ'Scale
-
- -- Note: for the decimal fixed-point type cases, the conversion is
- -- done literally without scaling (i.e. the actual expression that
- -- is generated is Image_xx (tp?(Expr) [, pm])
-
- -- For enumeration types other than those declared packages Standard
- -- or System, typ'Image (X) expands into:
-
- -- Image_Enumeration_NN (typ'Pos (X), typS, typI'Address)
-
- -- where 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.
-
- 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;
- Arglist : List_Id;
- Func : RE_Id;
- Ttyp : Entity_Id;
- Func_Ent : Entity_Id;
-
- begin
- 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 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);
-
- else
- -- Here we get the Image of an enumeration type
-
- Ttyp := Component_Type (Etype (Lit_Indexes (Rtyp)));
-
- if Ttyp = Standard_Integer_8 then
- Func := RE_Image_Enumeration_8;
- elsif Ttyp = Standard_Integer_16 then
- Func := RE_Image_Enumeration_16;
- else
- Func := 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;
-
- Rewrite (N,
- Make_Function_Call (Loc,
- Name => New_Occurrence_Of (RTE (Func), Loc),
- Parameter_Associations => New_List (
- Make_Attribute_Reference (Loc,
- Attribute_Name => Name_Pos,
- Prefix => New_Occurrence_Of (Ptyp, Loc),
- Expressions => New_List (Expr)),
- New_Occurrence_Of (Lit_Strings (Rtyp), Loc),
- Make_Attribute_Reference (Loc,
- Prefix => New_Occurrence_Of (Lit_Indexes (Rtyp), Loc),
- Attribute_Name => Name_Address))));
-
- Analyze_And_Resolve (N, Standard_String);
- end if;
-
- return;
- end if;
-
- -- If we fall through, we have one of the cases that is handled by
- -- calling one of the System.Img_xx routines and Imid is set to the
- -- RE_Id for the function to be called.
-
- Func_Ent := RTE (Imid);
-
- -- If the function 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 (Func_Ent) then
- return;
- end if;
-
- -- Otherwise prepare arguments for run-time call
-
- Arglist := New_List (Convert_To (Tent, Relocate_Node (Expr)));
-
- -- For floating-point types, append Digits argument
-
- if Is_Floating_Point_Type (Rtyp) then
- Append_To (Arglist,
- 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 (Arglist,
- Make_Attribute_Reference (Loc,
- Prefix => New_Reference_To (Ptyp, Loc),
- Attribute_Name => Name_Aft));
-
- -- For wide character, append encoding method
-
- elsif Rtyp = Standard_Wide_Character then
- Append_To (Arglist,
- Make_Integer_Literal (Loc,
- Intval => Int (Wide_Character_Encoding_Method)));
-
- -- For decimal, append Scale and also set to do literal conversion
-
- elsif Is_Decimal_Fixed_Point_Type (Rtyp) then
- Append_To (Arglist,
- Make_Attribute_Reference (Loc,
- Prefix => New_Reference_To (Ptyp, Loc),
- Attribute_Name => Name_Scale));
-
- Set_Conversion_OK (First (Arglist));
- Set_Etype (First (Arglist), Tent);
- end if;
-
- Rewrite (N,
- Make_Function_Call (Loc,
- Name => New_Reference_To (Func_Ent, Loc),
- Parameter_Associations => Arglist));
-
- Analyze_And_Resolve (N, Standard_String);
- 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, and
-
- -- For types whose root type is Character
- -- xx = 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 types derived from Wide_Character, typ'Value (X) expands into
-
- -- Value_Wide_Character (X, Wide_Character_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, and 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 entitym 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 = 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.
-
- Rewrite (N,
- Convert_To (Btyp,
- Make_Function_Call (Loc,
- Name => New_Reference_To (RTE (Vid), Loc),
- Parameter_Associations => Args)));
-
- Analyze_And_Resolve (N, Btyp);
- end Expand_Value_Attribute;
-
- ----------------------------
- -- Expand_Width_Attribute --
- ----------------------------
-
- -- The processing here also handles the case of 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'Width and typ'Wide_Width expands into:
-
- -- Result_Type (xx (yy (Ptyp'First), yy (Ptyp'Last)))
-
- -- where
-
- -- For types whose root type is Character
- -- xx = Width_Character (Wide_Width_Character for Wide_Width case)
- -- 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),
- -- Wide_Character_Encoding_Method);
-
- -- and typ'Wide_Width expands into:
-
- -- Result_Type (Wide_Width_Wide_Character (
- -- Wide_Character (typ'First),
- -- Wide_Character (typ'Last));
-
- -- For real types, typ'Width and typ'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);
-
- -- 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; Wide : Boolean) 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
- if not Wide then
- XX := RE_Width_Character;
- else
- XX := RE_Wide_Width_Character;
- end if;
-
- YY := Rtyp;
-
- -- Types derived from Standard.Wide_Character
-
- elsif Rtyp = Standard_Wide_Character then
- if not Wide then
- XX := RE_Width_Wide_Character;
- else
- XX := RE_Wide_Width_Wide_Character;
- end if;
-
- 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));
-
- Ttyp := Component_Type (Etype (Lit_Indexes (Rtyp)));
-
- if not Wide then
- 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;
-
- else
- 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;
- end if;
-
- 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))));
-
- -- For enumeration'Wide_Width, add encoding method parameter
-
- if Wide then
- Append_To (Arglist,
- Make_Integer_Literal (Loc,
- Intval => Int (Wide_Character_Encoding_Method)));
- end if;
-
- 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)));
-
- -- For Wide_Character'Width, add encoding method parameter
-
- if Rtyp = Standard_Wide_Character and then Wide then
- Append_To (Arglist,
- Make_Integer_Literal (Loc,
- Intval => Int (Wide_Character_Encoding_Method)));
- end if;
-
- 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;
projects / msp430-gcc.git / blobdiff