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-- Expressions synthesis.
-- Copyright (C) 2017 Tristan Gingold
--
-- This file is part of GHDL.
--
-- This program 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 of the License, or
-- (at your option) any later version.
--
-- This program 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 this program. If not, see <gnu.org/licenses>.
with Types; use Types;
with Vhdl.Nodes; use Vhdl.Nodes;
with Elab.Vhdl_Context; use Elab.Vhdl_Context;
with Elab.Vhdl_Objtypes; use Elab.Vhdl_Objtypes;
with Elab.Vhdl_Values; use Elab.Vhdl_Values;
package Elab.Vhdl_Expr is
-- For a static value V, return the value.
function Get_Static_Discrete (V : Valtyp) return Int64;
-- Return the memory (as a memtyp) of static value V.
function Get_Value_Memtyp (V : Valtyp) return Memtyp;
-- Return the bounds of a one dimensional array/vector type and the
-- width of the element.
procedure Get_Onedimensional_Array_Bounds
(Typ : Type_Acc; Bnd : out Bound_Type; El_Typ : out Type_Acc);
-- Create an array subtype from bound BND.
function Create_Onedimensional_Array_Subtype
(Btyp : Type_Acc; Bnd : Bound_Type) return Type_Acc;
-- Return the type of EXPR without evaluating it.
function Exec_Type_Of_Object (Syn_Inst : Synth_Instance_Acc; Expr : Node)
return Type_Acc;
procedure Exec_Assignment_Prefix (Syn_Inst : Synth_Instance_Acc;
Pfx : Node;
Dest_Base : out Valtyp;
Dest_Typ : out Type_Acc;
Dest_Off : out Value_Offsets);
function Exec_Name (Syn_Inst : Synth_Instance_Acc; Name : Node)
return Valtyp;
-- Get the type of NAME. No expressions are expected to be evaluated.
function Exec_Name_Subtype (Syn_Inst : Synth_Instance_Acc; Name : Node)
return Type_Acc;
-- Synthesize EXPR. The expression must be self-constrained.
-- If EN is not No_Net, the execution is controlled by EN. This is used
-- for assertions and checks.
function Exec_Expression
(Syn_Inst : Synth_Instance_Acc; Expr : Node) return Valtyp;
-- Same as Synth_Expression, but the expression may be constrained by
-- EXPR_TYPE.
function Exec_Expression_With_Type (Syn_Inst : Synth_Instance_Acc;
Expr : Node;
Expr_Type : Type_Acc) return Valtyp;
-- Use base type of EXPR to synthesize EXPR. Useful when the type of
-- EXPR is defined by itself or a range.
function Exec_Expression_With_Basetype (Syn_Inst : Synth_Instance_Acc;
Expr : Node) return Valtyp;
-- Subtype conversion.
function Exec_Subtype_Conversion (Vt : Valtyp;
Dtype : Type_Acc;
Bounds : Boolean;
Loc : Node)
return Valtyp;
end Elab.Vhdl_Expr;
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