diff options
Diffstat (limited to 'src/vhdl/vhdl-ieee-std_logic_misc.adb')
| -rw-r--r-- | src/vhdl/vhdl-ieee-std_logic_misc.adb | 102 |
1 files changed, 102 insertions, 0 deletions
diff --git a/src/vhdl/vhdl-ieee-std_logic_misc.adb b/src/vhdl/vhdl-ieee-std_logic_misc.adb new file mode 100644 index 000000000..5bf71405b --- /dev/null +++ b/src/vhdl/vhdl-ieee-std_logic_misc.adb @@ -0,0 +1,102 @@ +-- Nodes recognizer for ieee.std_logic_misc. +-- Copyright (C) 2020 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 Std_Names; use Std_Names; +with Vhdl.Errors; use Vhdl.Errors; +with Vhdl.Ieee.Std_Logic_1164; + +package body Vhdl.Ieee.Std_Logic_Misc is + Error : exception; + + procedure Extract_Declarations (Pkg : Iir_Package_Declaration) + is + Decl : Iir; + + function Handle_Reduce (Res_Slv : Iir_Predefined_Functions; + Res_Suv : Iir_Predefined_Functions) + return Iir_Predefined_Functions + is + Arg : Iir; + Arg_Type : Iir; + begin + Arg := Get_Interface_Declaration_Chain (Decl); + if Is_Null (Arg) then + raise Error; + end if; + if Get_Chain (Arg) /= Null_Iir then + raise Error; + end if; + Arg_Type := Get_Type (Arg); + if Arg_Type = Ieee.Std_Logic_1164.Std_Logic_Vector_Type then + return Res_Slv; + elsif Arg_Type = Ieee.Std_Logic_1164.Std_Ulogic_Vector_Type then + return Res_Suv; + else + raise Error; + end if; + end Handle_Reduce; + + Def : Iir_Predefined_Functions; + begin + Decl := Get_Declaration_Chain (Pkg); + + -- Handle functions. + while Is_Valid (Decl) loop + Def := Iir_Predefined_None; + + if Get_Kind (Decl) = Iir_Kind_Function_Declaration + and then Get_Implicit_Definition (Decl) = Iir_Predefined_None + then + case Get_Identifier (Decl) is + when Name_And_Reduce => + Def := Handle_Reduce + (Iir_Predefined_Ieee_Std_Logic_Misc_And_Reduce_Slv, + Iir_Predefined_Ieee_Std_Logic_Misc_And_Reduce_Suv); + when Name_Nand_Reduce => + Def := Handle_Reduce + (Iir_Predefined_Ieee_Std_Logic_Misc_Nand_Reduce_Slv, + Iir_Predefined_Ieee_Std_Logic_Misc_Nand_Reduce_Suv); + when Name_Or_Reduce => + Def := Handle_Reduce + (Iir_Predefined_Ieee_Std_Logic_Misc_Or_Reduce_Slv, + Iir_Predefined_Ieee_Std_Logic_Misc_Or_Reduce_Suv); + when Name_Nor_Reduce => + Def := Handle_Reduce + (Iir_Predefined_Ieee_Std_Logic_Misc_Nor_Reduce_Slv, + Iir_Predefined_Ieee_Std_Logic_Misc_Nor_Reduce_Suv); + when Name_Xor_Reduce => + Def := Handle_Reduce + (Iir_Predefined_Ieee_Std_Logic_Misc_Xor_Reduce_Slv, + Iir_Predefined_Ieee_Std_Logic_Misc_Xor_Reduce_Suv); + when Name_Xnor_Reduce => + Def := Handle_Reduce + (Iir_Predefined_Ieee_Std_Logic_Misc_Xnor_Reduce_Slv, + Iir_Predefined_Ieee_Std_Logic_Misc_Xnor_Reduce_Suv); + when others => + Def := Iir_Predefined_None; + end case; + Set_Implicit_Definition (Decl, Def); + end if; + + Decl := Get_Chain (Decl); + end loop; + exception + when Error => + Error_Msg_Sem (+Pkg, "package ieee.std_logic_misc is ill-formed"); + end Extract_Declarations; +end Vhdl.Ieee.Std_Logic_Misc; |