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-- Iir to ortho translator.
-- Copyright (C) 2002 - 2014 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.
package Trans.Chap8 is
-- If TRUE, generate extra-code to catch at run-time incoherent state
-- issues.
State_Debug : constant Boolean := True;
-- The initial state. Used in process to loop.
State_Init : constant State_Type := 0;
-- The state for 'return' in a subprogram.
State_Return : constant State_Type := 1;
-- Called at the entry of the generated procedure to setup the state
-- machinery: set the local state variable, create the state machine
-- (loop, case, first choice). The current position in the graph is
-- vertex 0 (initial state): there is an implicit State_Allocate and a
-- State_Start. This is not reentrant (does not nest).
procedure State_Entry (Info : Ortho_Info_Acc);
-- Last action of the generated procedure: close the case and the loop.
-- Destroy the state machinery.
procedure State_Leave (Parent : Iir);
-- True if the current process or subprogram is state based.
function State_Enabled return Boolean;
-- Create a new state.
function State_Allocate return State_Type;
-- Start statements for STATE.
procedure State_Start (State : State_Type);
-- Jump to state NEXT_STATE. Note: this doesn't modify the control flow,
-- so there must be no statements after State_Jump until the next
-- State_Start.
procedure State_Jump (Next_State : State_Type);
-- Suspend the current process or subprogram. It will resume to
-- NEXT_STATE.
procedure State_Suspend (Next_State : State_Type);
procedure Translate_Statements_Chain (First : Iir);
-- Return true if there is a return statement in the chain.
function Translate_Statements_Chain_Has_Return (First : Iir) return Boolean;
-- Create a case branch for CHOICE.
-- Used by case statement and aggregates.
procedure Translate_Case_Choice
(Choice : Iir; Choice_Type : Iir; Blk : in out O_Case_Block);
-- Inc or dec by VAL ITERATOR according to DIR.
-- Used for loop statements.
procedure Gen_Update_Iterator (Iterator : O_Dnode;
Dir : Iir_Direction;
Val : Unsigned_64;
Itype : Iir);
-- Create declarations for a for-loop statement.
procedure Translate_For_Loop_Statement_Declaration (Stmt : Iir);
procedure Translate_Report (Stmt : Iir; Subprg : O_Dnode; Level : Iir);
-- Create the state record for the CALL procedure call.
procedure Translate_Procedure_Call_State (Call : Iir);
function Translate_Subprogram_Call
(Call : Iir; Assoc_Chain : Iir; Obj : Iir) return O_Enode;
end Trans.Chap8;
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