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Diffstat (limited to 'src/vhdl/iirs_utils.adb')
| -rw-r--r-- | src/vhdl/iirs_utils.adb | 1131 |
1 files changed, 1131 insertions, 0 deletions
diff --git a/src/vhdl/iirs_utils.adb b/src/vhdl/iirs_utils.adb new file mode 100644 index 0000000..52c1ee8 --- /dev/null +++ b/src/vhdl/iirs_utils.adb @@ -0,0 +1,1131 @@ +-- 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 GHDL; see the file COPYING. If not, write to the Free +-- Software Foundation, 59 Temple Place - Suite 330, Boston, MA +-- 02111-1307, USA. +with Scanner; use Scanner; +with Tokens; use Tokens; +with Errorout; use Errorout; +with Name_Table; +with Str_Table; +with Std_Names; use Std_Names; +with Flags; use Flags; +with PSL.Nodes; +with Sem_Inst; + +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 Is_Error (N : Iir) return Boolean is + begin + return Get_Kind (N) = Iir_Kind_Error; + end Is_Error; + + function Get_Operator_Name (Op : Iir) return Name_Id is + begin + case Get_Kind (Op) is + when Iir_Kind_And_Operator + | Iir_Kind_Reduction_And_Operator => + return Name_And; + when Iir_Kind_Or_Operator + | Iir_Kind_Reduction_Or_Operator => + return Name_Or; + when Iir_Kind_Nand_Operator + | Iir_Kind_Reduction_Nand_Operator => + return Name_Nand; + when Iir_Kind_Nor_Operator + | Iir_Kind_Reduction_Nor_Operator => + return Name_Nor; + when Iir_Kind_Xor_Operator + | Iir_Kind_Reduction_Xor_Operator => + return Name_Xor; + when Iir_Kind_Xnor_Operator + | Iir_Kind_Reduction_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_Match_Equality_Operator => + return Name_Op_Match_Equality; + when Iir_Kind_Match_Inequality_Operator => + return Name_Op_Match_Inequality; + when Iir_Kind_Match_Less_Than_Operator => + return Name_Op_Match_Less; + when Iir_Kind_Match_Less_Than_Or_Equal_Operator => + return Name_Op_Match_Less_Equal; + when Iir_Kind_Match_Greater_Than_Operator => + return Name_Op_Match_Greater; + when Iir_Kind_Match_Greater_Than_Or_Equal_Operator => + return Name_Op_Match_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 Iir_Kind_Condition_Operator => + return Name_Op_Condition; + 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_Interface_Variable_Declaration => + return Adecl; + when Iir_Kind_Constant_Declaration + | Iir_Kind_Interface_Constant_Declaration => + return Adecl; + when Iir_Kind_Signal_Declaration + | Iir_Kind_Guard_Signal_Declaration + | Iir_Kind_Interface_Signal_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 (Name: Iir; With_Alias : Boolean := True) + return Iir + is + Adecl : Iir; + begin + Adecl := Name; + loop + case Get_Kind (Adecl) is + when Iir_Kind_Variable_Declaration + | Iir_Kind_Interface_Variable_Declaration + | Iir_Kind_Constant_Declaration + | Iir_Kind_Interface_Constant_Declaration + | Iir_Kind_Signal_Declaration + | Iir_Kind_Guard_Signal_Declaration + | Iir_Kind_Interface_Signal_Declaration + | Iir_Kind_File_Declaration + | Iir_Kind_Interface_File_Declaration + | Iir_Kind_Iterator_Declaration => + return Adecl; + when Iir_Kind_Object_Alias_Declaration => + if With_Alias then + Adecl := Get_Name (Adecl); + else + return Adecl; + end if; + 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 + | Iir_Kinds_Concurrent_Statement => + return Adecl; + when Iir_Kind_Simple_Name + | Iir_Kind_Selected_Name => + Adecl := Get_Named_Entity (Adecl); + when Iir_Kind_Attribute_Name => + return Get_Named_Entity (Adecl); + when others => + Error_Kind ("get_object_prefix", Adecl); + end case; + end loop; + end Get_Object_Prefix; + + function Get_Association_Interface (Assoc : Iir) return Iir + is + Formal : Iir; + begin + Formal := Get_Formal (Assoc); + loop + case Get_Kind (Formal) is + when Iir_Kind_Simple_Name => + return Get_Named_Entity (Formal); + when Iir_Kinds_Interface_Object_Declaration => + return Formal; + when Iir_Kind_Slice_Name + | Iir_Kind_Indexed_Name + | Iir_Kind_Selected_Element => + Formal := Get_Prefix (Formal); + when others => + Error_Kind ("get_association_interface", Formal); + end case; + end loop; + end Get_Association_Interface; + + 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 + -- Do not add self-dependency + if Unit = Target then + return; + end if; + + case Get_Kind (Unit) is + when Iir_Kind_Design_Unit + | Iir_Kind_Entity_Aspect_Entity => + null; + when others => + Error_Kind ("add_dependence", Unit); + end case; + + 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; + + -- 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 : Nat32; + begin + Ptr := Get_String_Fat_Acc (Str); + Len := Get_String_Length (Str); + return String (Ptr (1 .. Len)); + end Image_String_Lit; + + function Copy_Enumeration_Literal (Lit : Iir) return Iir + is + Res : Iir; + begin + Res := Create_Iir (Iir_Kind_Enumeration_Literal); + Set_Identifier (Res, Get_Identifier (Lit)); + Location_Copy (Res, Lit); + Set_Parent (Res, Get_Parent (Lit)); + Set_Type (Res, Get_Type (Lit)); + Set_Enum_Pos (Res, Get_Enum_Pos (Lit)); + Set_Expr_Staticness (Res, Locally); + Set_Enumeration_Decl (Res, Lit); + return Res; + end Copy_Enumeration_Literal; + + procedure Create_Range_Constraint_For_Enumeration_Type + (Def : Iir_Enumeration_Type_Definition) + is + Range_Expr : Iir_Range_Expression; + Literal_List : constant Iir_List := Get_Enumeration_Literal_List (Def); + begin + -- 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, + Copy_Enumeration_Literal (Get_First_Element (Literal_List))); + Set_Right_Limit + (Range_Expr, + Copy_Enumeration_Literal (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_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_Body + | 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_Interface_Constant_Declaration + | Iir_Kind_Interface_Variable_Declaration + | Iir_Kind_Interface_Signal_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_Body => + Free_Recursive (Get_Entity_Name (N)); + 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 Mark_Subprogram_Used (Subprg : Iir) + is + N : Iir; + begin + N := Subprg; + loop + exit when Get_Use_Flag (N); + Set_Use_Flag (N, True); + N := Sem_Inst.Get_Origin (N); + -- The origin may also be an instance. + exit when N = Null_Iir; + end loop; + end Mark_Subprogram_Used; + + function Get_Callees_List_Holder (Subprg : Iir) return Iir is + begin + case Get_Kind (Subprg) is + when Iir_Kind_Procedure_Declaration + | Iir_Kind_Function_Declaration => + return Get_Subprogram_Body (Subprg); + when Iir_Kind_Sensitized_Process_Statement + | Iir_Kind_Process_Statement => + return Subprg; + when others => + Error_Kind ("get_callees_list_holder", Subprg); + end case; + end Get_Callees_List_Holder; + + 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 (Get_Callees_List_Holder (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_Fully_Constrained_Type (Def : Iir) return Boolean is + begin + return Get_Kind (Def) not in Iir_Kinds_Composite_Type_Definition + or else Get_Constraint_State (Def) = Fully_Constrained; + end Is_Fully_Constrained_Type; + + function Strip_Denoting_Name (Name : Iir) return Iir is + begin + if Get_Kind (Name) in Iir_Kinds_Denoting_Name then + return Get_Named_Entity (Name); + else + return Name; + end if; + end Strip_Denoting_Name; + + function Build_Simple_Name (Ref : Iir; Loc : Location_Type) return Iir + is + Res : Iir; + begin + Res := Create_Iir (Iir_Kind_Simple_Name); + Set_Location (Res, Loc); + Set_Identifier (Res, Get_Identifier (Ref)); + Set_Named_Entity (Res, Ref); + Set_Base_Name (Res, Res); + -- FIXME: set type and expr staticness ? + return Res; + end Build_Simple_Name; + + function Build_Simple_Name (Ref : Iir; Loc : Iir) return Iir is + begin + return Build_Simple_Name (Ref, Get_Location (Loc)); + end Build_Simple_Name; + + function Has_Resolution_Function (Subtyp : Iir) return Iir + is + Ind : constant Iir := Get_Resolution_Indication (Subtyp); + begin + if Ind /= Null_Iir + and then Get_Kind (Ind) in Iir_Kinds_Denoting_Name + then + return Get_Named_Entity (Ind); + else + return Null_Iir; + end if; + end Has_Resolution_Function; + + function Get_Primary_Unit_Name (Physical_Def : Iir) return Iir + is + Unit : constant Iir := Get_Primary_Unit (Physical_Def); + begin + return Get_Unit_Name (Get_Physical_Unit_Value (Unit)); + end Get_Primary_Unit_Name; + + function Is_Type_Name (Name : Iir) return Iir + is + Ent : Iir; + begin + if Get_Kind (Name) in Iir_Kinds_Denoting_Name then + Ent := Get_Named_Entity (Name); + case Get_Kind (Ent) is + when Iir_Kind_Type_Declaration => + return Get_Type_Definition (Ent); + when Iir_Kind_Subtype_Declaration + | Iir_Kind_Base_Attribute => + return Get_Type (Ent); + when others => + return Null_Iir; + end case; + else + return Null_Iir; + end if; + end Is_Type_Name; + + function Get_Type_Of_Subtype_Indication (Ind : Iir) return Iir is + begin + case Get_Kind (Ind) is + when Iir_Kinds_Denoting_Name => + return Get_Type (Ind); + when Iir_Kinds_Subtype_Definition => + return Ind; + when others => + Error_Kind ("get_type_of_subtype_indication", Ind); + end case; + end Get_Type_Of_Subtype_Indication; + + function Get_Index_Type (Indexes : Iir_List; Idx : Natural) return Iir + is + Index : constant Iir := Get_Nth_Element (Indexes, Idx); + begin + if Index = Null_Iir then + return Null_Iir; + else + return Get_Index_Type (Index); + end if; + end Get_Index_Type; + + function Get_Index_Type (Array_Type : Iir; Idx : Natural) return Iir is + begin + return Get_Index_Type (Get_Index_Subtype_List (Array_Type), Idx); + end Get_Index_Type; + + function Get_Denoted_Type_Mark (Subtyp : Iir) return Iir + is + Type_Mark_Name : constant Iir := Get_Subtype_Type_Mark (Subtyp); + begin + if Type_Mark_Name = Null_Iir then + -- No type_mark (for array subtype created by constrained array + -- definition. + return Null_Iir; + else + return Get_Type (Get_Named_Entity (Type_Mark_Name)); + end if; + end Get_Denoted_Type_Mark; + + function Is_Second_Subprogram_Specification (Spec : Iir) return Boolean + is + Bod : constant Iir := Get_Subprogram_Body (Spec); + begin + return Bod /= Null_Iir + and then Get_Subprogram_Specification (Bod) /= Spec; + end Is_Second_Subprogram_Specification; + + 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_Named_Entity (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_Named_Entity (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_Body then + raise Internal_Error; + end if; + return Res; + when Iir_Kind_Block_Statement + | Iir_Kind_Architecture_Body + | Iir_Kind_Generate_Statement => + return Block_Spec; + when Iir_Kind_Indexed_Name + | Iir_Kind_Selected_Name + | Iir_Kind_Slice_Name => + return Get_Named_Entity (Get_Prefix (Block_Spec)); + when Iir_Kind_Simple_Name => + return Get_Named_Entity (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_Entity (Decl : Iir) return Iir + is + Name : constant Iir := Get_Entity_Name (Decl); + Res : constant Iir := Get_Named_Entity (Name); + begin + pragma Assert (Res = Null_Iir + or else Get_Kind (Res) = Iir_Kind_Entity_Declaration); + return Res; + end Get_Entity; + + function Get_Configuration (Aspect : Iir) return Iir + is + Name : constant Iir := Get_Configuration_Name (Aspect); + Res : constant Iir := Get_Named_Entity (Name); + begin + pragma Assert (Get_Kind (Res) = Iir_Kind_Configuration_Declaration); + return Res; + end Get_Configuration; + + function Get_Entity_Identifier_Of_Architecture (Arch : Iir) return Name_Id + is + Name : constant Iir := Get_Entity_Name (Arch); + begin + case Get_Kind (Name) is + when Iir_Kind_Simple_Name + | Iir_Kind_Selected_Name => + return Get_Identifier (Name); + when others => + Error_Kind ("get_entity_identifier_of_architecture", Name); + end case; + end Get_Entity_Identifier_Of_Architecture; + + function Is_Component_Instantiation + (Inst : Iir_Component_Instantiation_Statement) + return Boolean is + begin + case Get_Kind (Get_Instantiated_Unit (Inst)) is + when Iir_Kinds_Denoting_Name => + return True; + when Iir_Kind_Entity_Aspect_Entity + | Iir_Kind_Entity_Aspect_Configuration => + return False; + when others => + Error_Kind ("is_component_instantiation", Inst); + end case; + end Is_Component_Instantiation; + + function Is_Entity_Instantiation + (Inst : Iir_Component_Instantiation_Statement) + return Boolean is + begin + case Get_Kind (Get_Instantiated_Unit (Inst)) is + when Iir_Kinds_Denoting_Name => + return False; + when Iir_Kind_Entity_Aspect_Entity + | Iir_Kind_Entity_Aspect_Configuration => + return True; + when others => + Error_Kind ("is_entity_instantiation", Inst); + end case; + end Is_Entity_Instantiation; + + 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_One_Dimensional_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_One_Dimensional_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_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; + List : Iir_List; + 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_Subtype_Definition then + Set_Resolution_Indication (Res, Get_Resolution_Indication (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)); + List := Create_Iir_List; + Set_Index_Subtype_List (Res, List); + Set_Index_Constraint_List (Res, 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, None); + 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; + + -- 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_Kinds_Denoting_Name => + -- A component declaration. + Inst := Get_Named_Entity (Aspect); + pragma Assert (Get_Kind (Inst) = Iir_Kind_Component_Declaration); + return Inst; + when Iir_Kind_Component_Declaration => + return Aspect; + when Iir_Kind_Entity_Aspect_Entity => + return Get_Entity (Aspect); + when Iir_Kind_Entity_Aspect_Configuration => + Inst := Get_Configuration (Aspect); + return 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 Is_Signal_Object (Name : Iir) return Boolean + is + Adecl: Iir; + begin + Adecl := Get_Object_Prefix (Name, True); + case Get_Kind (Adecl) is + when Iir_Kind_Signal_Declaration + | Iir_Kind_Interface_Signal_Declaration + | Iir_Kind_Guard_Signal_Declaration + | Iir_Kinds_Signal_Attribute => + return True; + when Iir_Kind_Object_Alias_Declaration => + raise Internal_Error; + when others => + return False; + end case; + end Is_Signal_Object; + + -- LRM08 4.7 Package declarations + -- If the package header is empty, the package declared by a package + -- declaration is called a simple package. + function Is_Simple_Package (Pkg : Iir) return Boolean is + begin + return Get_Package_Header (Pkg) = Null_Iir; + end Is_Simple_Package; + + -- LRM08 4.7 Package declarations + -- If the package header contains a generic clause and no generic map + -- aspect, the package is called an uninstantiated package. + function Is_Uninstantiated_Package (Pkg : Iir) return Boolean + is + Header : constant Iir := Get_Package_Header (Pkg); + begin + return Header /= Null_Iir + and then Get_Generic_Map_Aspect_Chain (Header) = Null_Iir; + end Is_Uninstantiated_Package; + + -- LRM08 4.7 Package declarations + -- If the package header contains both a generic clause and a generic + -- map aspect, the package is declared a generic-mapped package. + function Is_Generic_Mapped_Package (Pkg : Iir) return Boolean + is + Header : constant Iir := Get_Package_Header (Pkg); + begin + return Header /= Null_Iir + and then Get_Generic_Map_Aspect_Chain (Header) /= Null_Iir; + end Is_Generic_Mapped_Package; + + function Kind_In (N : Iir; K1, K2 : Iir_Kind) return Boolean + is + K : constant Iir_Kind := Get_Kind (N); + begin + return K = K1 or K = K2; + end Kind_In; + + function Get_HDL_Node (N : PSL_Node) return Iir is + begin + return Iir (PSL.Nodes.Get_HDL_Node (N)); + end Get_HDL_Node; + + procedure Set_HDL_Node (N : PSL_Node; Expr : Iir) is + begin + PSL.Nodes.Set_HDL_Node (N, PSL.Nodes.HDL_Node (Expr)); + end Set_HDL_Node; +end Iirs_Utils; |