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|
-- Common operations on nodes.
-- Copyright (C) 2002, 2003, 2004, 2005 Tristan Gingold
--
-- GHDL is free software; you can redistribute it and/or modify it under
-- the terms of the GNU General Public License as published by the Free
-- Software Foundation; either version 2, or (at your option) any later
-- version.
--
-- GHDL is distributed in the hope that it will be useful, but WITHOUT 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
-- along with GCC; see the file COPYING. If not, write to the Free
-- Software Foundation, 59 Temple Place - Suite 330, Boston, MA
-- 02111-1307, USA.
with Scan; use Scan;
with Tokens; use Tokens;
with Errorout; use Errorout;
with Name_Table;
with Str_Table;
with Std_Names; use Std_Names;
with Flags; use Flags;
package body Iirs_Utils is
-- Transform the current token into an iir literal.
-- The current token must be either a character or an identifier.
function Current_Text return Iir is
Res: Iir;
begin
case Current_Token is
when Tok_Identifier =>
Res := Create_Iir (Iir_Kind_Simple_Name);
when Tok_Character =>
Res := Create_Iir (Iir_Kind_Character_Literal);
when others =>
raise Internal_Error;
end case;
Set_Identifier (Res, Current_Identifier);
Invalidate_Current_Identifier;
Invalidate_Current_Token;
Set_Location (Res, Get_Token_Location);
return Res;
end Current_Text;
function Get_Operator_Name (Op : Iir) return Name_Id is
begin
case Get_Kind (Op) is
when Iir_Kind_And_Operator =>
return Name_And;
when Iir_Kind_Or_Operator =>
return Name_Or;
when Iir_Kind_Nand_Operator =>
return Name_Nand;
when Iir_Kind_Nor_Operator =>
return Name_Nor;
when Iir_Kind_Xor_Operator =>
return Name_Xor;
when Iir_Kind_Xnor_Operator =>
return Name_Xnor;
when Iir_Kind_Equality_Operator =>
return Name_Op_Equality;
when Iir_Kind_Inequality_Operator =>
return Name_Op_Inequality;
when Iir_Kind_Less_Than_Operator =>
return Name_Op_Less;
when Iir_Kind_Less_Than_Or_Equal_Operator =>
return Name_Op_Less_Equal;
when Iir_Kind_Greater_Than_Operator =>
return Name_Op_Greater;
when Iir_Kind_Greater_Than_Or_Equal_Operator =>
return Name_Op_Greater_Equal;
when Iir_Kind_Sll_Operator =>
return Name_Sll;
when Iir_Kind_Sla_Operator =>
return Name_Sla;
when Iir_Kind_Srl_Operator =>
return Name_Srl;
when Iir_Kind_Sra_Operator =>
return Name_Sra;
when Iir_Kind_Rol_Operator =>
return Name_Rol;
when Iir_Kind_Ror_Operator =>
return Name_Ror;
when Iir_Kind_Addition_Operator =>
return Name_Op_Plus;
when Iir_Kind_Substraction_Operator =>
return Name_Op_Minus;
when Iir_Kind_Concatenation_Operator =>
return Name_Op_Concatenation;
when Iir_Kind_Multiplication_Operator =>
return Name_Op_Mul;
when Iir_Kind_Division_Operator =>
return Name_Op_Div;
when Iir_Kind_Modulus_Operator =>
return Name_Mod;
when Iir_Kind_Remainder_Operator =>
return Name_Rem;
when Iir_Kind_Exponentiation_Operator =>
return Name_Op_Exp;
when Iir_Kind_Not_Operator =>
return Name_Not;
when Iir_Kind_Negation_Operator =>
return Name_Op_Minus;
when Iir_Kind_Identity_Operator =>
return Name_Op_Plus;
when Iir_Kind_Absolute_Operator =>
return Name_Abs;
when others =>
raise Internal_Error;
end case;
end Get_Operator_Name;
function Get_Longuest_Static_Prefix (Expr: Iir) return Iir is
Adecl: Iir;
begin
Adecl := Expr;
loop
case Get_Kind (Adecl) is
when Iir_Kind_Variable_Declaration
| Iir_Kind_Variable_Interface_Declaration =>
return Adecl;
when Iir_Kind_Constant_Declaration
| Iir_Kind_Constant_Interface_Declaration =>
return Adecl;
when Iir_Kind_Signal_Declaration
| Iir_Kind_Guard_Signal_Declaration
| Iir_Kind_Signal_Interface_Declaration =>
return Adecl;
when Iir_Kind_Object_Alias_Declaration =>
-- LRM 4.3.3.1 Object Aliases
-- 2. The name must be a static name [...]
return Adecl;
when Iir_Kind_Slice_Name
| Iir_Kind_Indexed_Name
| Iir_Kind_Selected_Element =>
if Get_Name_Staticness (Adecl) >= Globally then
return Adecl;
else
Adecl := Get_Prefix (Adecl);
end if;
when Iir_Kind_Simple_Name
| Iir_Kind_Selected_Name =>
Adecl := Get_Named_Entity (Adecl);
when Iir_Kind_Type_Conversion =>
return Null_Iir;
when others =>
Error_Kind ("get_longuest_static_prefix", Adecl);
end case;
end loop;
end Get_Longuest_Static_Prefix;
function Get_Object_Prefix (Decl: Iir) return Iir is
Adecl: Iir;
begin
Adecl := Decl;
loop
case Get_Kind (Adecl) is
when Iir_Kind_Variable_Declaration
| Iir_Kind_Variable_Interface_Declaration
| Iir_Kind_Constant_Declaration
| Iir_Kind_Constant_Interface_Declaration
| Iir_Kind_Signal_Declaration
| Iir_Kind_Guard_Signal_Declaration
| Iir_Kind_Signal_Interface_Declaration
| Iir_Kind_File_Declaration
| Iir_Kind_File_Interface_Declaration
| Iir_Kind_Iterator_Declaration =>
return Adecl;
when Iir_Kind_Object_Alias_Declaration =>
Adecl := Get_Name (Adecl);
when Iir_Kind_Indexed_Name
| Iir_Kind_Slice_Name
| Iir_Kind_Selected_Element
| Iir_Kind_Selected_By_All_Name =>
Adecl := Get_Base_Name (Adecl);
when Iir_Kinds_Literal
| Iir_Kind_Enumeration_Literal
| Iir_Kinds_Monadic_Operator
| Iir_Kinds_Dyadic_Operator
| Iir_Kind_Function_Call
| Iir_Kind_Qualified_Expression
| Iir_Kind_Type_Conversion
| Iir_Kind_Allocator_By_Expression
| Iir_Kind_Allocator_By_Subtype
| Iir_Kinds_Attribute
| Iir_Kind_Attribute_Value
| Iir_Kind_Aggregate
| Iir_Kind_Simple_Aggregate
| Iir_Kind_Dereference
| Iir_Kind_Implicit_Dereference
| Iir_Kind_Unit_Declaration =>
return Adecl;
when Iir_Kind_Simple_Name
| Iir_Kind_Selected_Name =>
Adecl := Get_Named_Entity (Adecl);
when others =>
Error_Kind ("get_object_prefix", Adecl);
end case;
end loop;
end Get_Object_Prefix;
function Find_Name_In_List (List: Iir_List; Lit: Name_Id) return Iir is
El: Iir;
Ident: Name_Id;
begin
for I in Natural loop
El := Get_Nth_Element (List, I);
exit when El = Null_Iir;
Ident := Get_Identifier (El);
if Ident = Lit then
return El;
end if;
end loop;
return Null_Iir;
end Find_Name_In_List;
function Find_Name_In_Chain (Chain: Iir; Lit: Name_Id) return Iir
is
El: Iir := Chain;
begin
while El /= Null_Iir loop
if Get_Identifier (El) = Lit then
return El;
end if;
El := Get_Chain (El);
end loop;
return Null_Iir;
end Find_Name_In_Chain;
function Is_In_Chain (Chain : Iir; El : Iir) return Boolean
is
Chain_El : Iir;
begin
Chain_El := Chain;
while Chain_El /= Null_Iir loop
if Chain_El = El then
return True;
end if;
Chain_El := Get_Chain (Chain_El);
end loop;
return False;
end Is_In_Chain;
procedure Add_Dependence (Target: Iir_Design_Unit; Unit: Iir) is
begin
if Unit = Target then
return;
end if;
Add_Element (Get_Dependence_List (Target), Unit);
end Add_Dependence;
procedure Clear_Instantiation_Configuration_Vhdl87
(Parent : Iir; In_Generate : Boolean; Full : Boolean)
is
El : Iir;
Prev : Iir;
begin
El := Get_Concurrent_Statement_Chain (Parent);
while El /= Null_Iir loop
case Get_Kind (El) is
when Iir_Kind_Component_Instantiation_Statement =>
if In_Generate and not Full then
Prev := Get_Component_Configuration (El);
if Prev /= Null_Iir then
case Get_Kind (Prev) is
when Iir_Kind_Configuration_Specification =>
-- Keep it.
null;
when Iir_Kind_Component_Configuration =>
Set_Component_Configuration (El, Null_Iir);
when others =>
Error_Kind
("clear_instantiation_configuration_vhdl87",
Prev);
end case;
end if;
else
Set_Component_Configuration (El, Null_Iir);
end if;
when Iir_Kind_Generate_Statement =>
Set_Generate_Block_Configuration (El, Null_Iir);
-- Clear inside a generate statement.
Clear_Instantiation_Configuration_Vhdl87 (El, True, Full);
when Iir_Kind_Block_Statement =>
Set_Block_Block_Configuration (El, Null_Iir);
when others =>
null;
end case;
El := Get_Chain (El);
end loop;
end Clear_Instantiation_Configuration_Vhdl87;
procedure Clear_Instantiation_Configuration (Parent : Iir; Full : Boolean)
is
El : Iir;
begin
if False and then Flags.Vhdl_Std = Vhdl_87 then
Clear_Instantiation_Configuration_Vhdl87
(Parent, Get_Kind (Parent) = Iir_Kind_Generate_Statement, Full);
else
El := Get_Concurrent_Statement_Chain (Parent);
while El /= Null_Iir loop
case Get_Kind (El) is
when Iir_Kind_Component_Instantiation_Statement =>
Set_Component_Configuration (El, Null_Iir);
when Iir_Kind_Generate_Statement =>
Set_Generate_Block_Configuration (El, Null_Iir);
when Iir_Kind_Block_Statement =>
Set_Block_Block_Configuration (El, Null_Iir);
when others =>
null;
end case;
El := Get_Chain (El);
end loop;
end if;
end Clear_Instantiation_Configuration;
function Get_String_Fat_Acc (Str : Iir) return String_Fat_Acc is
begin
return Str_Table.Get_String_Fat_Acc (Get_String_Id (Str));
end Get_String_Fat_Acc;
function Get_String_Length (Str : Iir) return Natural is
begin
return Natural (Nat32'(Get_String_Length (Str)));
end Get_String_Length;
-- Get identifier of NODE as a string.
function Image_Identifier (Node : Iir) return String is
begin
return Name_Table.Image (Iirs.Get_Identifier (Node));
end Image_Identifier;
function Image_String_Lit (Str : Iir) return String
is
Ptr : String_Fat_Acc;
Len : Natural;
begin
Ptr := Get_String_Fat_Acc (Str);
Len := Get_String_Length (Str);
return Ptr (1 .. Len);
end Image_String_Lit;
procedure Create_Range_Constraint_For_Enumeration_Type
(Def : Iir_Enumeration_Type_Definition)
is
Range_Expr : Iir_Range_Expression;
Literal_List: Iir_List;
begin
Literal_List := Get_Enumeration_Literal_List (Def);
-- Create a constraint.
Range_Expr := Create_Iir (Iir_Kind_Range_Expression);
Location_Copy (Range_Expr, Def);
Set_Type (Range_Expr, Def);
Set_Direction (Range_Expr, Iir_To);
Set_Left_Limit (Range_Expr, Get_First_Element (Literal_List));
Set_Right_Limit (Range_Expr, Get_Last_Element (Literal_List));
Set_Expr_Staticness (Range_Expr, Locally);
Set_Range_Constraint (Def, Range_Expr);
end Create_Range_Constraint_For_Enumeration_Type;
procedure Free_Old_Iir (Node: in Iir)
is
N : Iir;
begin
N := Node;
Free_Iir (N);
end Free_Old_Iir;
procedure Free_Name (Node : Iir)
is
N : Iir;
N1 : Iir;
begin
if Node = Null_Iir then
return;
end if;
N := Node;
case Get_Kind (N) is
when Iir_Kind_Simple_Name
| Iir_Kind_Character_Literal
| Iir_Kind_String_Literal
| Iir_Kind_Subtype_Definition =>
Free_Iir (N);
when Iir_Kind_Selected_Name
| Iir_Kind_Parenthesis_Name
| Iir_Kind_Selected_By_All_Name =>
N1 := Get_Prefix (N);
Free_Iir (N);
Free_Name (N1);
when Iir_Kind_Library_Declaration
| Iir_Kind_Package_Declaration
| Iir_Kind_Entity_Declaration
| Iir_Kind_Architecture_Declaration
| Iir_Kind_Design_Unit
| Iir_Kinds_Concurrent_Statement
| Iir_Kinds_Sequential_Statement =>
return;
when others =>
Error_Kind ("free_name", Node);
--Free_Iir (N);
end case;
end Free_Name;
procedure Free_Recursive_List (List : Iir_List)
is
El : Iir;
begin
for I in Natural loop
El := Get_Nth_Element (List, I);
exit when El = Null_Iir;
Free_Recursive (El);
end loop;
end Free_Recursive_List;
procedure Free_Recursive (Node : Iir; Free_List : Boolean := False)
is
N : Iir;
begin
if Node = Null_Iir then
return;
end if;
N := Node;
case Get_Kind (N) is
when Iir_Kind_Library_Declaration =>
return;
when Iir_Kind_Simple_Name
| Iir_Kind_Parenthesis_Name
| Iir_Kind_Character_Literal =>
null;
when Iir_Kind_Enumeration_Literal =>
return;
when Iir_Kind_Selected_Name =>
Free_Recursive (Get_Prefix (N));
when Iir_Kind_Constant_Interface_Declaration
| Iir_Kind_Variable_Interface_Declaration
| Iir_Kind_Signal_Interface_Declaration =>
Free_Recursive (Get_Type (N));
Free_Recursive (Get_Default_Value (N));
when Iir_Kind_Range_Expression =>
Free_Recursive (Get_Left_Limit (N));
Free_Recursive (Get_Right_Limit (N));
when Iir_Kind_Subtype_Definition =>
Free_Recursive (Get_Base_Type (N));
when Iir_Kind_Integer_Literal =>
null;
when Iir_Kind_Package_Declaration
| Iir_Kind_Package_Body
| Iir_Kind_Entity_Declaration
| Iir_Kind_Configuration_Declaration =>
null;
when Iir_Kind_File_Type_Definition
| Iir_Kind_Access_Type_Definition
| Iir_Kind_Array_Type_Definition
| Iir_Kind_Enumeration_Type_Definition
| Iir_Kind_Integer_Subtype_Definition
| Iir_Kind_Enumeration_Subtype_Definition
| Iir_Kind_Physical_Subtype_Definition =>
return;
when Iir_Kind_Architecture_Declaration =>
Free_Recursive (Get_Entity (N));
when Iir_Kind_Proxy =>
null;
when Iir_Kind_Overload_List =>
Free_Recursive_List (Get_Overload_List (N));
if not Free_List then
return;
end if;
when Iir_Kind_Array_Subtype_Definition =>
Free_Recursive_List (Get_Index_List (N));
Free_Recursive (Get_Base_Type (N));
when Iir_Kind_Entity_Aspect_Entity =>
Free_Recursive (Get_Entity (N));
Free_Recursive (Get_Architecture (N));
when others =>
Error_Kind ("free_recursive", Node);
end case;
Free_Iir (N);
end Free_Recursive;
function Get_Predefined_Function_Name (Func : Iir_Predefined_Functions)
return String
is
begin
return Iir_Predefined_Functions'Image (Func);
end Get_Predefined_Function_Name;
procedure Clear_Seen_Flag (Top : Iir)
is
Callees_List : Iir_Callees_List;
El: Iir;
begin
if Get_Seen_Flag (Top) then
Set_Seen_Flag (Top, False);
Callees_List := Get_Callees_List (Top);
if Callees_List /= Null_Iir_List then
for I in Natural loop
El := Get_Nth_Element (Callees_List, I);
exit when El = Null_Iir;
if Get_Seen_Flag (El) = False then
Clear_Seen_Flag (El);
end if;
end loop;
end if;
end if;
end Clear_Seen_Flag;
function Is_Anonymous_Type_Definition (Def : Iir) return Boolean is
begin
return Get_Type_Declarator (Def) = Null_Iir;
end Is_Anonymous_Type_Definition;
function Is_Unconstrained_Type_Definition (Def : Iir) return Boolean is
begin
return Get_Kind (Def) in Iir_Kinds_Unconstrained_Array_Type_Definition;
end Is_Unconstrained_Type_Definition;
function Is_Same_Profile (L, R: Iir) return Boolean
is
L1, R1 : Iir;
L_Kind, R_Kind : Iir_Kind;
El_L, El_R : Iir;
begin
L_Kind := Get_Kind (L);
if L_Kind = Iir_Kind_Non_Object_Alias_Declaration then
L1 := Get_Name (L);
L_Kind := Get_Kind (L1);
else
L1 := L;
end if;
R_Kind := Get_Kind (R);
if R_Kind = Iir_Kind_Non_Object_Alias_Declaration then
R1 := Get_Name (R);
R_Kind := Get_Kind (R1);
else
R1 := R;
end if;
-- Check L and R are both of the same 'kind'.
-- Also the return profile for functions.
if L_Kind in Iir_Kinds_Function_Declaration
and then R_Kind in Iir_Kinds_Function_Declaration
then
if Get_Base_Type (Get_Return_Type (L1)) /=
Get_Base_Type (Get_Return_Type (R1))
then
return False;
end if;
elsif L_Kind in Iir_Kinds_Procedure_Declaration
and then R_Kind in Iir_Kinds_Procedure_Declaration
then
null;
elsif L_Kind = Iir_Kind_Enumeration_Literal
and then R_Kind = Iir_Kind_Enumeration_Literal
then
return Get_Type (L1) = Get_Type (R1);
else
-- Kind mismatch.
return False;
end if;
-- Check parameters profile.
El_L := Get_Interface_Declaration_Chain (L1);
El_R := Get_Interface_Declaration_Chain (R1);
loop
exit when El_L = Null_Iir and El_R = Null_Iir;
if El_L = Null_Iir or El_R = Null_Iir then
return False;
end if;
if Get_Base_Type (Get_Type (El_L)) /= Get_Base_Type (Get_Type (El_R))
then
return False;
end if;
El_L := Get_Chain (El_L);
El_R := Get_Chain (El_R);
end loop;
return True;
end Is_Same_Profile;
-- From a block_specification, returns the block.
function Get_Block_From_Block_Specification (Block_Spec : Iir)
return Iir
is
Res : Iir;
begin
case Get_Kind (Block_Spec) is
when Iir_Kind_Design_Unit =>
Res := Get_Library_Unit (Block_Spec);
if Get_Kind (Res) /= Iir_Kind_Architecture_Declaration then
raise Internal_Error;
end if;
return Res;
when Iir_Kind_Block_Statement
| Iir_Kind_Architecture_Declaration
| Iir_Kind_Generate_Statement =>
return Block_Spec;
when Iir_Kind_Indexed_Name
| Iir_Kind_Selected_Name
| Iir_Kind_Slice_Name =>
return Get_Prefix (Block_Spec);
when others =>
Error_Kind ("get_block_from_block_specification", Block_Spec);
return Null_Iir;
end case;
end Get_Block_From_Block_Specification;
function Get_String_Type_Bound_Type (Sub_Type : Iir) return Iir is
begin
if Get_Kind (Sub_Type) /= Iir_Kind_Array_Subtype_Definition then
Error_Kind ("get_string_type_bound_type", Sub_Type);
end if;
return Get_First_Element (Get_Index_Subtype_List (Sub_Type));
end Get_String_Type_Bound_Type;
procedure Get_Low_High_Limit (Arange : Iir_Range_Expression;
Low, High : out Iir)
is
begin
case Get_Direction (Arange) is
when Iir_To =>
Low := Get_Left_Limit (Arange);
High := Get_Right_Limit (Arange);
when Iir_Downto =>
High := Get_Left_Limit (Arange);
Low := Get_Right_Limit (Arange);
end case;
end Get_Low_High_Limit;
function Get_Low_Limit (Arange : Iir_Range_Expression) return Iir is
begin
case Get_Direction (Arange) is
when Iir_To =>
return Get_Left_Limit (Arange);
when Iir_Downto =>
return Get_Right_Limit (Arange);
end case;
end Get_Low_Limit;
function Get_High_Limit (Arange : Iir_Range_Expression) return Iir is
begin
case Get_Direction (Arange) is
when Iir_To =>
return Get_Right_Limit (Arange);
when Iir_Downto =>
return Get_Left_Limit (Arange);
end case;
end Get_High_Limit;
function Is_Unidim_Array_Type (A_Type : Iir) return Boolean
is
Base_Type : constant Iir := Get_Base_Type (A_Type);
begin
if Get_Kind (Base_Type) = Iir_Kind_Array_Type_Definition
and then Get_Nbr_Elements (Get_Index_Subtype_List (Base_Type)) = 1
then
return True;
else
return False;
end if;
end Is_Unidim_Array_Type;
function Is_Range_Attribute_Name (Expr : Iir) return Boolean
is
Attr : Iir;
Id : Name_Id;
begin
if Get_Kind (Expr) = Iir_Kind_Parenthesis_Name then
Attr := Get_Prefix (Expr);
else
Attr := Expr;
end if;
if Get_Kind (Attr) /= Iir_Kind_Attribute_Name then
return False;
end if;
Id := Get_Attribute_Identifier (Attr);
return Id = Name_Range or Id = Name_Reverse_Range;
end Is_Range_Attribute_Name;
function Create_Array_Subtype (Arr_Type : Iir; Loc : Location_Type)
return Iir_Array_Subtype_Definition
is
Res : Iir_Array_Subtype_Definition;
Base_Type : Iir;
begin
Res := Create_Iir (Iir_Kind_Array_Subtype_Definition);
Set_Location (Res, Loc);
Base_Type := Get_Base_Type (Arr_Type);
Set_Base_Type (Res, Base_Type);
Set_Element_Subtype (Res, Get_Element_Subtype (Base_Type));
if Get_Kind (Arr_Type) /= Iir_Kind_Array_Type_Definition then
Set_Resolution_Function (Res, Get_Resolution_Function (Arr_Type));
end if;
Set_Resolved_Flag (Res, Get_Resolved_Flag (Arr_Type));
Set_Signal_Type_Flag (Res, Get_Signal_Type_Flag (Arr_Type));
Set_Type_Staticness (Res, Get_Type_Staticness (Base_Type));
Set_Index_Subtype_List (Res, Create_Iir_List);
return Res;
end Create_Array_Subtype;
function Is_Subprogram_Method (Spec : Iir) return Boolean is
begin
case Get_Kind (Get_Parent (Spec)) is
when Iir_Kind_Protected_Type_Declaration
| Iir_Kind_Protected_Type_Body =>
return True;
when others =>
return False;
end case;
end Is_Subprogram_Method;
function Get_Method_Type (Spec : Iir) return Iir
is
Parent : Iir;
begin
Parent := Get_Parent (Spec);
case Get_Kind (Parent) is
when Iir_Kind_Protected_Type_Declaration =>
return Parent;
when Iir_Kind_Protected_Type_Body =>
return Get_Protected_Type_Declaration (Parent);
when others =>
return Null_Iir;
end case;
end Get_Method_Type;
function Create_Error_Expr (Orig : Iir; Atype : Iir) return Iir
is
Res : Iir;
begin
Res := Create_Iir (Iir_Kind_Error);
Set_Expr_Staticness (Res, Locally);
Set_Type (Res, Atype);
Set_Error_Origin (Res, Orig);
Location_Copy (Res, Orig);
return Res;
end Create_Error_Expr;
function Create_Error_Type (Orig : Iir) return Iir
is
Res : Iir;
begin
Res := Create_Iir (Iir_Kind_Error);
--Set_Expr_Staticness (Res, Locally);
Set_Base_Type (Res, Res);
Set_Error_Origin (Res, Orig);
Location_Copy (Res, Orig);
Set_Type_Declarator (Res, Null_Iir);
Set_Resolved_Flag (Res, True);
Set_Signal_Type_Flag (Res, True);
return Res;
end Create_Error_Type;
function Get_Associated_Formal (Assoc : Iir) return Iir
is
Formal : Iir;
begin
Formal := Get_Formal (Assoc);
case Get_Kind (Formal) is
when Iir_Kind_Simple_Name
| Iir_Kind_Selected_Name =>
Formal := Get_Named_Entity (Formal);
when others =>
null;
end case;
return Get_Base_Name (Formal);
end Get_Associated_Formal;
-- Extract the entity from ASPECT.
-- Note: if ASPECT is a component declaration, returns ASPECT.
function Get_Entity_From_Entity_Aspect (Aspect : Iir) return Iir
is
Inst : Iir;
begin
case Get_Kind (Aspect) is
when Iir_Kind_Component_Declaration =>
return Aspect;
when Iir_Kind_Entity_Aspect_Entity =>
return Get_Library_Unit (Get_Entity (Aspect));
when Iir_Kind_Entity_Aspect_Configuration =>
Inst := Get_Library_Unit (Get_Configuration (Aspect));
return Get_Library_Unit (Get_Entity (Inst));
when Iir_Kind_Entity_Aspect_Open =>
return Null_Iir;
when others =>
Error_Kind ("get_entity_from_entity_aspect", Aspect);
end case;
end Get_Entity_From_Entity_Aspect;
function Get_Physical_Literal_Value (Lit : Iir) return Iir_Int64
is
begin
case Get_Kind (Lit) is
when Iir_Kind_Physical_Int_Literal =>
return Get_Value (Lit)
* Get_Value (Get_Physical_Unit_Value (Get_Unit_Name (Lit)));
when Iir_Kind_Unit_Declaration =>
return Get_Value (Get_Physical_Unit_Value (Lit));
when Iir_Kind_Physical_Fp_Literal =>
return Iir_Int64
(Get_Fp_Value (Lit)
* Iir_Fp64 (Get_Value (Get_Physical_Unit_Value
(Get_Unit_Name (Lit)))));
when others =>
Error_Kind ("get_physical_literal_value", Lit);
end case;
end Get_Physical_Literal_Value;
function Is_Signal_Object (Name : Iir) return Boolean
is
Adecl: Iir;
begin
Adecl := Get_Base_Name (Name);
loop
case Get_Kind (Adecl) is
when Iir_Kind_Variable_Declaration
| Iir_Kind_Variable_Interface_Declaration
| Iir_Kind_Constant_Declaration
| Iir_Kind_Constant_Interface_Declaration
| Iir_Kind_Implicit_Dereference
| Iir_Kind_Dereference
| Iir_Kind_Attribute_Value
| Iir_Kind_Function_Call =>
return False;
when Iir_Kind_Signal_Declaration
| Iir_Kind_Signal_Interface_Declaration
| Iir_Kind_Guard_Signal_Declaration
| Iir_Kinds_Signal_Attribute =>
return True;
when Iir_Kind_Object_Alias_Declaration =>
Adecl := Get_Base_Name (Get_Name (Adecl));
when others =>
Error_Kind ("is_signal_object", Adecl);
end case;
end loop;
end Is_Signal_Object;
end Iirs_Utils;
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