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-- VHDL parser.
-- 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 Types; use Types;
with Iirs; use Iirs;
package Vhdl.Parse is
-- If True, create nodes for parenthesis expressions.
Flag_Parse_Parenthesis : Boolean := False;
type Prio_Type is
(
Prio_Expression,
Prio_Logical,
Prio_Relation,
Prio_Shift,
Prio_Simple,
Prio_Term,
Prio_Factor
);
-- Parse an expression.
-- (Used by PSL).
function Parse_Expression (Prio : Prio_Type := Prio_Expression) return Iir;
function Parse_Binary_Expression (Left : Iir; Prio : Prio_Type) return Iir;
-- Convert the STR (0 .. LEN - 1) into a operator symbol identifier.
-- Emit an error message if the name is not an operator name.
function Str_To_Operator_Name (Str_Id : String8_Id;
Len : Nat32;
Loc : Location_Type) return Name_Id;
-- Convert string literal STR to an operator symbol.
-- Emit an error message if the string is not an operator name.
function String_To_Operator_Symbol (Str : Iir) return Iir;
-- Parse a single design unit.
-- The scanner must have been initialized, however, the current_token
-- shouldn't have been set.
-- At return, the last token accepted is the semi_colon that terminates
-- the library unit.
-- Return Null_Iir when end of file.
function Parse_Design_Unit return Iir_Design_Unit;
-- Parse a file.
-- The scanner must have been initialized as for parse_design_unit.
-- Return Null_Iir in case of error.
function Parse_Design_File return Iir_Design_File;
end Vhdl.Parse;
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