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BackendDAECreate.mo
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BackendDAECreate.mo
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/*
* This file is part of OpenModelica.
*
* Copyright (c) 1998-CurrentYear, Linköping University,
* Department of Computer and Information Science,
* SE-58183 Linköping, Sweden.
*
* All rights reserved.
*
* THIS PROGRAM IS PROVIDED UNDER THE TERMS OF GPL VERSION 3
* AND THIS OSMC PUBLIC LICENSE (OSMC-PL).
* ANY USE, REPRODUCTION OR DISTRIBUTION OF THIS PROGRAM CONSTITUTES RECIPIENT'S
* ACCEPTANCE OF THE OSMC PUBLIC LICENSE.
*
* The OpenModelica software and the Open Source Modelica
* Consortium (OSMC) Public License (OSMC-PL) are obtained
* from Linköping University, either from the above address,
* from the URLs: http://www.ida.liu.se/projects/OpenModelica or
* http://www.openmodelica.org, and in the OpenModelica distribution.
* GNU version 3 is obtained from: http://www.gnu.org/copyleft/gpl.html.
*
* This program is distributed WITHOUT ANY WARRANTY; without
* even the implied warranty of MERCHANTABILITY or FITNESS
* FOR A PARTICULAR PURPOSE, EXCEPT AS EXPRESSLY SET FORTH
* IN THE BY RECIPIENT SELECTED SUBSIDIARY LICENSE CONDITIONS
* OF OSMC-PL.
*
* See the full OSMC Public License conditions for more details.
*
*/
package BackendDAECreate
" file: BackendDAECreate.mo
package: BackendDAECreate
description: This file contains all functions for transforming the DAE structure
to the BackendDAE.
"
public import Absyn;
public import BackendDAE;
public import DAE;
protected import Algorithm;
protected import BackendDump;
protected import BackendDAEUtil;
protected import BackendDAEOptimize;
protected import BackendEquation;
protected import BackendVariable;
protected import ComponentReference;
protected import ClassInf;
protected import DAEDump;
protected import DAEUtil;
protected import Debug;
protected import Derive;
protected import Error;
protected import Expression;
protected import ExpressionSimplify;
protected import ExpressionDump;
protected import Inline;
protected import OptManager;
protected import RTOpts;
protected import SCode;
protected import Util;
protected import Values;
public function lower
"function: lower
This function translates a DAE, which is the result from instantiating a
class, into a more precise form, called BackendDAE.BackendDAE defined in this module.
The BackendDAE.BackendDAE representation splits the DAE into equations and variables
and further divides variables into known and unknown variables and the
equations into simple and nonsimple equations.
The variables are inserted into a hash table. This gives a lookup cost of
O(1) for finding a variable. The equations are put in an expandable
array. Where adding a new equation can be done in O(1) time if space
is available.
inputs: daeList: DAE.DAElist, simplify: bool)
outputs: BackendDAE.BackendDAE"
input DAE.DAElist lst;
input DAE.FunctionTree functionTree;
input Boolean addDummyDerivativeIfNeeded;
input Boolean simplify;
// input Boolean removeTrivEqs "temporal input, for legacy purposes; doesn't add trivial equations to removed equations";
output BackendDAE.BackendDAE outBackendDAE;
algorithm
outBackendDAE := matchcontinue(lst, functionTree, addDummyDerivativeIfNeeded, simplify)
local
BackendDAE.BinTree s;
BackendDAE.Variables vars,knvars,vars_1,extVars;
BackendDAE.AliasVariables aliasVars "hash table with alias vars' replacements (a=b or a=-b)";
list<BackendDAE.Equation> eqns,reqns,ieqns,algeqns,multidimeqns,imultidimeqns,eqns_1;
list<BackendDAE.MultiDimEquation> aeqns,aeqns1,iaeqns;
list<DAE.Algorithm> algs,algs_1;
list<BackendDAE.WhenClause> whenclauses,whenclauses_1;
list<BackendDAE.ZeroCrossing> zero_crossings;
BackendDAE.EquationArray eqnarr,reqnarr,ieqnarr;
array<BackendDAE.MultiDimEquation> arr_md_eqns;
array<DAE.Algorithm> algarr;
BackendDAE.ExternalObjectClasses extObjCls;
Boolean daeContainsNoStates, shouldAddDummyDerivative;
BackendDAE.EventInfo einfo;
DAE.FunctionTree funcs;
list<DAE.Element> elems;
case(lst, functionTree, addDummyDerivativeIfNeeded, true) // simplify by default
equation
(DAE.DAE(elems),functionTree) = processDelayExpressions(lst,functionTree);
s = states(elems, BackendDAE.emptyBintree);
vars = BackendDAEUtil.emptyVars();
knvars = BackendDAEUtil.emptyVars();
extVars = BackendDAEUtil.emptyVars();
(vars,knvars,extVars,eqns,reqns,ieqns,aeqns,iaeqns,algs,whenclauses,extObjCls,s) = lower2(elems, functionTree, s, vars, knvars, extVars, {});
daeContainsNoStates = hasNoStates(s); // check if the DAE has states
// adrpo: add the dummy derivative state ONLY IF the DAE contains
// no states AND ONLY if addDummyDerivative is set to true!
shouldAddDummyDerivative = boolAnd(addDummyDerivativeIfNeeded, daeContainsNoStates);
(vars,eqns) = addDummyState(vars, eqns, shouldAddDummyDerivative);
whenclauses_1 = listReverse(whenclauses);
algeqns = lowerAlgorithms(vars, algs);
(multidimeqns,imultidimeqns) = lowerMultidimeqns(vars, aeqns, iaeqns);
eqns = listAppend(algeqns, eqns);
eqns = listAppend(multidimeqns, eqns);
ieqns = listAppend(imultidimeqns, ieqns);
aeqns = listAppend(aeqns,iaeqns);
(vars,knvars,eqns,reqns,ieqns,aeqns1,algs_1,aliasVars) = BackendDAEOptimize.removeSimpleEquations(vars, knvars, eqns, reqns, ieqns, aeqns, algs, s);
vars_1 = detectImplicitDiscrete(vars, eqns);
eqns_1 = sortEqn(eqns);
(eqns_1,ieqns,aeqns1,algs,vars_1) = expandDerOperator(vars_1,eqns_1,ieqns,aeqns1,algs_1,functionTree);
(zero_crossings) = findZeroCrossings(vars_1,knvars,eqns_1,aeqns1,whenclauses_1,algs);
eqnarr = BackendDAEUtil.listEquation(eqns_1);
reqnarr = BackendDAEUtil.listEquation(reqns);
ieqnarr = BackendDAEUtil.listEquation(ieqns);
arr_md_eqns = listArray(aeqns1);
algarr = listArray(algs);
einfo = Inline.inlineEventInfo(BackendDAE.EVENT_INFO(whenclauses_1,zero_crossings),(SOME(functionTree),{DAE.NORM_INLINE()}));
BackendDAEUtil.checkBackendDAEWithErrorMsg(BackendDAE.DAE(vars_1,knvars,extVars,aliasVars,eqnarr,reqnarr,ieqnarr,arr_md_eqns,algarr,einfo,extObjCls));
then BackendDAE.DAE(vars_1,knvars,extVars,aliasVars,eqnarr,reqnarr,ieqnarr,arr_md_eqns,algarr,einfo,extObjCls);
case(lst, functionTree, addDummyDerivativeIfNeeded, false) // do not simplify
equation
(DAE.DAE(elems),functionTree) = processDelayExpressions(lst,functionTree);
s = states(elems, BackendDAE.emptyBintree);
vars = BackendDAEUtil.emptyVars();
knvars = BackendDAEUtil.emptyVars();
extVars = BackendDAEUtil.emptyVars();
(vars,knvars,extVars,eqns,reqns,ieqns,aeqns,iaeqns,algs,whenclauses,extObjCls,s) = lower2(elems, functionTree, s, vars, knvars, extVars, {});
daeContainsNoStates = hasNoStates(s); // check if the DAE has states
// adrpo: add the dummy derivative state ONLY IF the DAE contains
// no states AND ONLY if addDummyDerivative is set to true!
shouldAddDummyDerivative = boolAnd(addDummyDerivativeIfNeeded, daeContainsNoStates);
(vars,eqns) = addDummyState(vars, eqns, shouldAddDummyDerivative);
whenclauses_1 = listReverse(whenclauses);
algeqns = lowerAlgorithms(vars, algs);
(multidimeqns,imultidimeqns) = lowerMultidimeqns(vars, aeqns, iaeqns);
eqns = listAppend(algeqns, eqns);
eqns = listAppend(multidimeqns, eqns);
ieqns = listAppend(imultidimeqns, ieqns);
// no simplify (vars,knvars,eqns,reqns,ieqns,aeqns1) = .BackendDAEOptimize.removeSimpleEquations(vars, knvars, eqns, reqns, ieqns, aeqns, s);
aliasVars = BackendDAEUtil.emptyAliasVariables();
vars_1 = detectImplicitDiscrete(vars, eqns);
eqns_1 = sortEqn(eqns);
// no simplify (eqns_1,ieqns,aeqns1,algs,vars_1) = expandDerOperator(vars_1,eqns_1,ieqns,aeqns1,algs);
(zero_crossings) = findZeroCrossings(vars_1,knvars,eqns_1,aeqns,whenclauses_1,algs);
eqnarr = BackendDAEUtil.listEquation(eqns_1);
reqnarr = BackendDAEUtil.listEquation(reqns);
ieqnarr = BackendDAEUtil.listEquation(ieqns);
arr_md_eqns = listArray(aeqns);
algarr = listArray(algs);
einfo = Inline.inlineEventInfo(BackendDAE.EVENT_INFO(whenclauses_1,zero_crossings),(SOME(functionTree),{DAE.NORM_INLINE()}));
BackendDAEUtil.checkBackendDAEWithErrorMsg(BackendDAE.DAE(vars_1,knvars,extVars,aliasVars,eqnarr,reqnarr,ieqnarr,arr_md_eqns,algarr,einfo,extObjCls));
then BackendDAE.DAE(vars_1,knvars,extVars,aliasVars,eqnarr,reqnarr,ieqnarr,arr_md_eqns,algarr,einfo,extObjCls);
end matchcontinue;
end lower;
protected function lower2
"function: lower2
Helper function to lower.
inputs: (DAE.DAElist,BinTree /* states */,BackendDAE.Variables,BackendDAE.Variables,BackendDAE.Variables,WhenClause list)
outputs: (Variables,BackendDAE.Variables,BackendDAE.Variables,Equation list,Equation list,Equation list,MultiDimEquation list,DAE.Algorithm list,WhenClause list)"
input list<DAE.Element> inElements;
input DAE.FunctionTree functionTree;
input BackendDAE.BinTree inStatesBinTree;
input BackendDAE.Variables inVariables;
input BackendDAE.Variables inKnownVariables;
input BackendDAE.Variables inExternalVariables;
input list<BackendDAE.WhenClause> inWhenClauseLst;
output BackendDAE.Variables outVariables;
output BackendDAE.Variables outKnownVariables;
output BackendDAE.Variables outExternalVariables;
output list<BackendDAE.Equation> outEquationLst3;
output list<BackendDAE.Equation> outEquationLst4;
output list<BackendDAE.Equation> outEquationLst5;
output list<BackendDAE.MultiDimEquation> outMultiDimEquationLst6;
output list<BackendDAE.MultiDimEquation> outMultiDimEquationLst7;
output list<DAE.Algorithm> outAlgorithmAlgorithmLst8;
output list<BackendDAE.WhenClause> outWhenClauseLst9;
output BackendDAE.ExternalObjectClasses outExtObjClasses;
output BackendDAE.BinTree outStatesBinTree;
algorithm
(outVariables,outKnownVariables,outExternalVariables,outEquationLst3,outEquationLst4,outEquationLst5,
outMultiDimEquationLst6,outMultiDimEquationLst7,outAlgorithmAlgorithmLst8,outWhenClauseLst9,outExtObjClasses,outStatesBinTree):=
matchcontinue (inElements,functionTree,inStatesBinTree,inVariables,inKnownVariables,inExternalVariables,inWhenClauseLst)
local
BackendDAE.Variables v1,v2,v3,vars,knvars,extVars,extVars1,extVars2,vars_1,knvars_1,vars1,vars2,knvars1,knvars2,kv;
list<BackendDAE.WhenClause> whenclauses,whenclauses_1,whenclauses_2;
list<BackendDAE.Equation> eqns,reqns,ieqns,eqns1,eqns2,reqns1,ieqns1,reqns2,ieqns2,re,ie,eqsComplex;
list<BackendDAE.MultiDimEquation> aeqns,aeqns1,aeqns2,ae,iaeqns,iaeqns1,iaeqns2,iae;
list<DAE.Algorithm> algs,algs1,algs2,al;
BackendDAE.ExternalObjectClasses extObjCls,extObjCls1,extObjCls2;
BackendDAE.ExternalObjectClass extObjCl;
BackendDAE.Var v_1,v_2;
DAE.Element v,e;
list<DAE.Element> xs;
BackendDAE.BinTree states;
BackendDAE.Equation e_1, e_2;
DAE.Exp e1,e2,c;
list<BackendDAE.Value> ds;
BackendDAE.Value count,count_1;
DAE.Algorithm a,a1,a2;
DAE.DAElist dae;
DAE.ExpType ty;
DAE.ComponentRef cr;
Absyn.InnerOuter io;
DAE.ElementSource source "the element source";
DAE.FunctionTree funcs;
list<DAE.Element> daeElts;
Absyn.Info info;
// the empty case
case ({},functionTree,states,v1,v2,v3,whenclauses)
then
(v1,v2,v3,{},{},{},{},{},{},whenclauses,{},states);
// adrpo: should we ignore OUTER vars?!
//case (((v as DAE.VAR(innerOuter=io)) :: xs),states,vars,knvars,extVars,whenclauses)
// equation
// DAEUtil.isOuterVar(v);
// (vars,knvars,extVars,eqns,reqns,ieqns,aeqns,algs,whenclauses_1,extObjCls) =
// lower2(xs, states, vars, knvars, extVars, whenclauses);
// then
// (vars,knvars,extVars,eqns,reqns,ieqns,aeqns,algs,whenclauses_1,extObjCls);
// external object variables
case ((v as DAE.VAR(componentRef = _)) :: xs,functionTree,states,vars,knvars,extVars,whenclauses)
equation
(vars,knvars,extVars,eqns,reqns,ieqns,aeqns,iaeqns,algs,whenclauses_1,extObjCls,states) =
lower2(xs, functionTree, states, vars, knvars, extVars, whenclauses);
v_1 = lowerExtObjVar(v);
SOME(v_2) = Inline.inlineVarOpt(SOME(v_1),(SOME(functionTree),{DAE.NORM_INLINE()}));
extVars2 = BackendVariable.addVar(v_2, extVars);
then
(vars,knvars,extVars2,eqns,reqns,ieqns,aeqns,iaeqns,algs,whenclauses_1,extObjCls,states);
// class for external object
case (((v as DAE.EXTOBJECTCLASS(path,constr,destr,source)) :: xs),functionTree,states,vars,knvars,extVars,whenclauses)
local
Absyn.Path path;
DAE.Function constr,destr;
equation
(vars,knvars,extVars,eqns,reqns,ieqns,aeqns,iaeqns,algs,whenclauses_1,extObjCls,states)
= lower2(xs, functionTree, states, vars, knvars, extVars, whenclauses);
{extObjCl} = Inline.inlineExtObjClasses({BackendDAE.EXTOBJCLASS(path,constr,destr,source)},(SOME(functionTree),{DAE.NORM_INLINE()}));
then
(vars,knvars,extVars,eqns,reqns,ieqns,aeqns,iaeqns,algs,whenclauses_1,
extObjCl::extObjCls,states);
// variables: states and algebraic variables with binding equation
case (((v as DAE.VAR(componentRef = cr, source = source)) :: xs),functionTree,states,vars,knvars,extVars,whenclauses)
equation
(vars,knvars,extVars,eqns,reqns,ieqns,aeqns,iaeqns,algs,whenclauses_1,extObjCls,states) =
lower2(xs, functionTree, states, vars, knvars, extVars, whenclauses);
// adrpo 2009-09-07 - according to MathCore
// add the binding as an equation and remove the binding from variable!
true = isStateOrAlgvar(v);
(v_1,SOME(e1),states) = lowerVar(v, states);
SOME(v_2) = Inline.inlineVarOpt(SOME(v_1),(SOME(functionTree),{DAE.NORM_INLINE()}));
e2 = Inline.inlineExp(e1,(SOME(functionTree),{DAE.NORM_INLINE()}));
vars_1 = BackendVariable.addVar(v_2, vars);
then
(vars_1,knvars,extVars,BackendDAE.EQUATION(DAE.CREF(cr, DAE.ET_OTHER()), e2, source)::eqns,reqns,ieqns,aeqns,iaeqns,algs,whenclauses_1,extObjCls,states);
// variables: states and algebraic variables with NO binding equation
case (((v as DAE.VAR(componentRef = cr, source = source)) :: xs),functionTree,states,vars,knvars,extVars,whenclauses)
equation
(vars,knvars,extVars,eqns,reqns,ieqns,aeqns,iaeqns,algs,whenclauses_1,extObjCls,states) =
lower2(xs, functionTree, states, vars, knvars, extVars, whenclauses);
true = isStateOrAlgvar(v);
(v_1,NONE(),states) = lowerVar(v, states);
SOME(v_2) = Inline.inlineVarOpt(SOME(v_1),(SOME(functionTree),{DAE.NORM_INLINE()}));
vars_1 = BackendVariable.addVar(v_2, vars);
then
(vars_1,knvars,extVars,eqns,reqns,ieqns,aeqns,iaeqns,algs,whenclauses_1,extObjCls,states);
// known variables: parameters and constants
case (((v as DAE.VAR(componentRef = _)) :: xs),functionTree,states,vars,knvars,extVars,whenclauses)
equation
(vars,knvars,extVars,eqns,reqns,ieqns,aeqns,iaeqns,algs,whenclauses_1,extObjCls,states)
= lower2(xs, functionTree, states, vars, knvars, extVars, whenclauses);
v_1 = lowerKnownVar(v) "in previous rule, lower_var failed." ;
SOME(v_2) = Inline.inlineVarOpt(SOME(v_1),(SOME(functionTree),{DAE.NORM_INLINE()}));
knvars_1 = BackendVariable.addVar(v_2, knvars);
then
(vars,knvars_1,extVars,eqns,reqns,ieqns,aeqns,iaeqns,algs,whenclauses_1,extObjCls,states);
// tuple equations are rewritten to algorihm tuple assign.
case (((e as DAE.EQUATION(exp = e1,scalar = e2)) :: xs),functionTree,states,vars,knvars,extVars,whenclauses)
equation
a = lowerTupleEquation(e);
a1 = Inline.inlineAlgorithm(a,(SOME(functionTree),{DAE.NORM_INLINE()}));
a2 = extendAlgorithm(a1,SOME(functionTree));
(vars,knvars,extVars,eqns,reqns,ieqns,aeqns,iaeqns,algs,whenclauses_1,extObjCls,states)
= lower2(xs, functionTree, states, vars, knvars, extVars, whenclauses);
then
(vars,knvars,extVars,eqns,reqns,ieqns,aeqns,iaeqns,a2::algs,whenclauses_1,extObjCls,states);
// tuple-tuple assignments are split into one equation for each tuple
// element, i.e. (i1, i2) = (4, 6) => i1 = 4; i2 = 6;
case ((DAE.EQUATION(DAE.TUPLE(targets), DAE.TUPLE(sources), source = eq_source) :: xs),
functionTree,states,vars,knvars,extVars,whenclauses)
local
list<DAE.Exp> targets;
list<DAE.Exp> sources;
DAE.ElementSource eq_source;
equation
(vars,knvars,extVars,eqns,reqns,ieqns,aeqns,iaeqns,algs,whenclauses_1,extObjCls,states)
= lower2(xs, functionTree, states, vars, knvars, extVars, whenclauses);
eqns2 = lowerTupleAssignment(targets, sources, eq_source, functionTree);
eqns = listAppend(eqns2, eqns);
then
(vars,knvars,extVars,eqns,reqns,ieqns,aeqns,iaeqns,algs,whenclauses_1,extObjCls,states);
// scalar equations
case (((e as DAE.EQUATION(exp = e1,scalar = e2)) :: xs),functionTree,states,vars,knvars,extVars,whenclauses)
equation
(vars,knvars,extVars,eqns,reqns,ieqns,aeqns,iaeqns,algs,whenclauses_1,extObjCls,states)
= lower2(xs, functionTree, states, vars, knvars, extVars, whenclauses);
e_1 = lowerEqn(e);
SOME(e_2) = Inline.inlineEqOpt(SOME(e_1),(SOME(functionTree),{DAE.NORM_INLINE()}));
then
(vars,knvars,extVars,(e_2 :: eqns),reqns,ieqns,aeqns,iaeqns,algs,whenclauses_1,extObjCls,states);
// effort variable equality equations
case (((e as DAE.EQUEQUATION(cr1 = _)) :: xs),functionTree,states,vars,knvars,extVars,whenclauses)
equation
(vars,knvars,extVars,eqns,reqns,ieqns,aeqns,iaeqns,algs,whenclauses_1,extObjCls,states)
= lower2(xs, functionTree, states, vars, knvars, extVars, whenclauses);
e_1 = lowerEqn(e);
SOME(e_2) = Inline.inlineEqOpt(SOME(e_1),(SOME(functionTree),{DAE.NORM_INLINE()}));
then
(vars,knvars,extVars,(e_2 :: eqns),reqns,ieqns,aeqns,iaeqns,algs,whenclauses_1,extObjCls,states);
// a solved equation
case (((e as DAE.DEFINE(componentRef = _)) :: xs),functionTree,states,vars,knvars,extVars,whenclauses)
equation
(vars,knvars,extVars,eqns,reqns,ieqns,aeqns,iaeqns,algs,whenclauses_1,extObjCls,states)
= lower2(xs, functionTree, states, vars, knvars, extVars, whenclauses);
e_1 = lowerEqn(e);
SOME(e_2) = Inline.inlineEqOpt(SOME(e_1),(SOME(functionTree),{DAE.NORM_INLINE()}));
then
(vars,knvars,extVars,e_2 :: eqns,reqns,ieqns,aeqns,iaeqns,algs,whenclauses_1,extObjCls,states);
// complex equations
case (((e as DAE.COMPLEX_EQUATION(lhs = e1,rhs = e2)) :: xs),functionTree,states,vars,knvars,extVars,whenclauses)
equation
(vars,knvars,extVars,eqns,reqns,ieqns,aeqns,iaeqns,algs,whenclauses_1,extObjCls,states)
= lower2(xs, functionTree, states, vars, knvars, extVars, whenclauses);
(eqsComplex,aeqns1) = lowerComplexEqn(e, functionTree);
eqns = listAppend(eqsComplex, eqns);
aeqns2 = listAppend(aeqns, aeqns1);
then
(vars,knvars,extVars,eqns,reqns,ieqns,aeqns2,iaeqns,algs,whenclauses_1,extObjCls,states);
// complex initial equations
case (((e as DAE.INITIAL_COMPLEX_EQUATION(lhs = e1,rhs = e2)) :: xs),functionTree,states,vars,knvars,extVars,whenclauses)
equation
(vars,knvars,extVars,eqns,reqns,ieqns,aeqns,iaeqns,algs,whenclauses_1,extObjCls,states)
= lower2(xs, functionTree, states, vars, knvars, extVars, whenclauses);
(eqsComplex,iaeqns1) = lowerComplexEqn(e, functionTree);
ieqns = listAppend(eqsComplex, ieqns);
iaeqns2 = listAppend(iaeqns, iaeqns1);
then
(vars,knvars,extVars,eqns,reqns,ieqns,aeqns,iaeqns2,algs,whenclauses_1,extObjCls,states);
// array equations
case (((e as DAE.ARRAY_EQUATION(dimension = ds,exp = e1,array = e2)) :: xs),functionTree,states,vars,knvars,extVars,whenclauses)
local
DAE.Exp e_11,e_21;
list<DAE.Exp> ea1,ea2;
list<tuple<DAE.Exp,DAE.Exp>> ealst;
equation
(vars,knvars,extVars,eqns,reqns,ieqns,aeqns,iaeqns,algs,whenclauses_1,extObjCls,states)
= lower2(xs, functionTree, states, vars, knvars, extVars, whenclauses);
BackendDAE.MULTIDIM_EQUATION(left=e_11 as DAE.ARRAY(scalar=true,array=ea1),
right=e_21 as DAE.ARRAY(scalar=true,array=ea2),source=source)
= lowerArrEqn(e,functionTree);
ealst = Util.listThreadTuple(ea1,ea2);
re = Util.listMap1(ealst,BackendEquation.generateEQUATION,source);
eqns = listAppend(re, eqns);
then
(vars,knvars,extVars,eqns,reqns,ieqns,aeqns,iaeqns,algs,whenclauses_1,extObjCls,states);
// array equations
case (((e as DAE.ARRAY_EQUATION(dimension = ds,exp = e1,array = e2)) :: xs),functionTree,states,vars,knvars,extVars,whenclauses)
local
BackendDAE.MultiDimEquation e_1;
equation
(vars,knvars,extVars,eqns,reqns,ieqns,aeqns,iaeqns,algs,whenclauses_1,extObjCls,states)
= lower2(xs, functionTree, states, vars, knvars, extVars, whenclauses);
e_1 = lowerArrEqn(e,functionTree);
then
(vars,knvars,extVars,eqns,reqns,ieqns,(e_1 :: aeqns),iaeqns,algs,whenclauses_1,extObjCls,states);
// initial array equations
case (((e as DAE.INITIAL_ARRAY_EQUATION(dimension = ds,exp = e1,array = e2)) :: xs),functionTree,states,vars,knvars,extVars,whenclauses)
local
DAE.Exp e_11,e_21;
list<DAE.Exp> ea1,ea2;
list<tuple<DAE.Exp,DAE.Exp>> ealst;
equation
(vars,knvars,extVars,eqns,reqns,ieqns,aeqns,iaeqns,algs,whenclauses_1,extObjCls,states)
= lower2(xs, functionTree, states, vars, knvars, extVars, whenclauses);
BackendDAE.MULTIDIM_EQUATION(left=e_11 as DAE.ARRAY(scalar=true,array=ea1),
right=e_21 as DAE.ARRAY(scalar=true,array=ea2),source=source)
= lowerArrEqn(e,functionTree);
ealst = Util.listThreadTuple(ea1,ea2);
re = Util.listMap1(ealst,BackendEquation.generateEQUATION,source);
ieqns = listAppend(re, ieqns);
then
(vars,knvars,extVars,eqns,reqns,ieqns,aeqns,iaeqns,algs,whenclauses_1,extObjCls,states);
// initial array equations
case (((e as DAE.INITIAL_ARRAY_EQUATION(dimension = ds, exp = e1, array = e2)) :: xs),
functionTree, states, vars, knvars, extVars, whenclauses)
local
BackendDAE.MultiDimEquation e_1;
equation
(vars, knvars, extVars, eqns, reqns, ieqns, aeqns,iaeqns, algs, whenclauses_1, extObjCls,states)
= lower2(xs, functionTree, states, vars, knvars, extVars, whenclauses);
e_1 = lowerArrEqn(e,functionTree);
then
(vars, knvars, extVars, eqns, reqns, ieqns, aeqns,(e_1 :: iaeqns), algs, whenclauses_1, extObjCls,states);
// when equations
case (((e as DAE.WHEN_EQUATION(condition = c,equations = eqns)) :: xs),functionTree,states,vars,knvars,extVars,whenclauses)
local list<Option<BackendDAE.Equation>> opteqlst;
equation
(vars1,knvars,extVars,eqns1,reqns,ieqns,aeqns,iaeqns,algs,whenclauses_1,extObjCls,states)
= lower2(xs, functionTree, states, vars, knvars, extVars, whenclauses);
count = listLength(whenclauses_1);
(eqns2,vars2,count_1,whenclauses_2) = lowerWhenEqn(e, count, whenclauses_1);
vars = BackendVariable.mergeVariables(vars1, vars2);
opteqlst = Util.listMap(eqns2,Util.makeOption);
opteqlst = Util.listMap1(opteqlst,Inline.inlineEqOpt,(SOME(functionTree),{DAE.NORM_INLINE()}));
eqns2 = Util.listMap(opteqlst,Util.getOption);
eqns = listAppend(eqns1, eqns2);
then
(vars,knvars,extVars,eqns,reqns,ieqns,aeqns,iaeqns,algs,whenclauses_2,extObjCls,states);
// initial equations
case (((e as DAE.INITIALEQUATION(exp1 = e1,exp2 = e2)) :: xs),functionTree,states,vars,knvars,extVars,whenclauses)
equation
(vars,knvars,extVars,eqns,reqns,ieqns,aeqns,iaeqns,algs,whenclauses_1,extObjCls,states)
= lower2(xs, functionTree, states, vars, knvars, extVars, whenclauses);
e_1 = lowerEqn(e);
SOME(e_2) = Inline.inlineEqOpt(SOME(e_1),(SOME(functionTree),{DAE.NORM_INLINE()}));
then
(vars,knvars,extVars,eqns,reqns,(e_2 :: ieqns),aeqns,iaeqns,algs,whenclauses_1,extObjCls,states);
// algorithm
case ((DAE.ALGORITHM(algorithm_ = a) :: xs),functionTree,states,vars,knvars,extVars,whenclauses)
equation
(vars,knvars,extVars,eqns,reqns,ieqns,aeqns,iaeqns,algs,whenclauses_1,extObjCls,states)
= lower2(xs, functionTree, states, vars, knvars, extVars, whenclauses);
a1 = Inline.inlineAlgorithm(a,(SOME(functionTree),{DAE.NORM_INLINE()}));
a2 = extendAlgorithm(a1,SOME(functionTree));
then
(vars,knvars,extVars,eqns,reqns,ieqns,aeqns,iaeqns,(a2 :: algs),whenclauses_1,extObjCls,states);
// flat class / COMP
case ((DAE.COMP(dAElist = daeElts) :: xs),functionTree,states,vars,knvars,extVars,whenclauses)
equation
(vars1,knvars1,extVars1,eqns1,reqns1,ieqns1,aeqns1,iaeqns1,algs1,whenclauses_1,extObjCls1,states) = lower2(daeElts, functionTree, states, vars, knvars, extVars, whenclauses);
(vars2,knvars2,extVars2,eqns2,reqns2,ieqns2,aeqns2,iaeqns2,algs2,whenclauses_2,extObjCls2,states) = lower2(xs, functionTree, states, vars1, knvars1, extVars1, whenclauses_1);
vars = vars2; // vars = BackendVariable.mergeVariables(vars1, vars2);
knvars = knvars2; // knvars = BackendVariable.mergeVariables(knvars1, knvars2);
extVars = extVars2; // extVars = BackendVariable.mergeVariables(extVars1,extVars2);
eqns = listAppend(eqns1, eqns2);
ieqns = listAppend(ieqns1, ieqns2);
reqns = listAppend(reqns1, reqns2);
aeqns = listAppend(aeqns1, aeqns2);
iaeqns = listAppend(iaeqns1, iaeqns2);
algs = listAppend(algs1, algs2);
extObjCls = listAppend(extObjCls1,extObjCls2);
then
(vars,knvars,extVars,eqns,reqns,ieqns,aeqns,iaeqns,algs,whenclauses_2,extObjCls,states);
// assert in equation section is converted to ALGORITHM
case ((DAE.ASSERT(cond,msg,source) :: xs),functionTree,states,vars,knvars,extVars,whenclauses)
local
BackendDAE.Variables v;
list<BackendDAE.Equation> e;
DAE.Exp cond,msg;
DAE.Algorithm alg;
equation
checkAssertCondition(cond,msg);
(v,kv,extVars,e,re,ie,ae,iae,al,whenclauses_1,extObjCls,states) = lower2(xs,functionTree,states,vars,knvars,extVars,whenclauses);
a = Inline.inlineAlgorithm(DAE.ALGORITHM_STMTS({DAE.STMT_ASSERT(cond,msg,source)}),(SOME(functionTree),{DAE.NORM_INLINE()}));
then
(v,kv,extVars,e,re,ie,ae,iae,a::al,whenclauses_1,extObjCls,states);
// terminate in equation section is converted to ALGORITHM
case ((DAE.TERMINATE(message = msg, source = source) :: xs),functionTree,states,vars,knvars,extVars,whenclauses)
local
BackendDAE.Variables v;
list<BackendDAE.Equation> e;
DAE.Exp cond,msg;
equation
(v,kv,extVars,e,re,ie,ae,iae,al,whenclauses_1,extObjCls,states) = lower2(xs, functionTree, states, vars,knvars,extVars, whenclauses) ;
a = Inline.inlineAlgorithm(DAE.ALGORITHM_STMTS({DAE.STMT_TERMINATE(msg,source)}),(SOME(functionTree),{DAE.NORM_INLINE()}));
then
(v,kv,extVars,e,re,ie,ae,iae,a::al,whenclauses_1,extObjCls,states);
case ((DAE.NORETCALL(functionName = func_name, functionArgs = args, source = source) :: xs),functionTree,states,vars,knvars,extVars,whenclauses)
local
Absyn.Path func_name;
list<DAE.Exp> args;
DAE.Statement s;
Boolean b1, b2, b;
equation
// make sure is not constrain as we don't support it, see below.
b1 = boolNot(Util.isEqual(func_name, Absyn.IDENT("constrain")));
// constrain is fine when we do check model!
b2 = OptManager.getOption("checkModel");
true = boolOr(b1, b2);
(vars,kv,extVars,eqns,re,ie,ae,iae,al,whenclauses_1,extObjCls,states) = lower2(xs, functionTree, states, vars, knvars, extVars, whenclauses);
s = DAE.STMT_NORETCALL(DAE.CALL(func_name, args, false, false, DAE.ET_NORETCALL(), DAE.NORM_INLINE()),source);
a = Inline.inlineAlgorithm(DAE.ALGORITHM_STMTS({s}),(SOME(functionTree),{DAE.NORM_INLINE()}));
then
(vars,kv,extVars,eqns,re,ie,ae,iae,a :: al,whenclauses_1,extObjCls,states);
// when running checkModel ignore some of the unsupported features as we only want to see nr eqs/vars
// if equation that cannot be translated to if expression but have initial() as condition
case (((e as DAE.IF_EQUATION(condition1 = {DAE.CALL(path=Absyn.IDENT("initial"))}, source = DAE.SOURCE(info = info))) :: xs),functionTree,states,vars,knvars,extVars,whenclauses)
equation
true = OptManager.getOption("checkModel");
(vars,kv,extVars,eqns,re,ie,ae,iae,al,whenclauses,extObjCls,states) = lower2(xs, functionTree, states, vars, knvars, extVars, whenclauses);
then
(vars,kv,extVars,eqns,re,ie,ae,iae,al,whenclauses,extObjCls,states);
// when running checkModel ignore some of the unsupported features as we only want to see nr eqs/vars
// initial if equation that cannot be translated to if expression
case (((e as DAE.INITIAL_IF_EQUATION(condition1 = _, source = DAE.SOURCE(info = info))) :: xs),functionTree,states,vars,knvars,extVars,whenclauses)
equation
true = OptManager.getOption("checkModel");
(vars,kv,extVars,eqns,re,ie,ae,iae,al,whenclauses,extObjCls,states) = lower2(xs, functionTree, states, vars, knvars, extVars, whenclauses);
then
(vars,kv,extVars,eqns,re,ie,ae,iae,al,whenclauses,extObjCls,states);
// when running checkModel ignore some of the unsupported features as we only want to see nr eqs/vars
// initial algorithm
case (((e as DAE.INITIALALGORITHM(algorithm_ = _, source = DAE.SOURCE(info=info))) :: xs),functionTree,states,vars,knvars,extVars,whenclauses)
equation
true = OptManager.getOption("checkModel");
(vars,kv,extVars,eqns,re,ie,ae,iae,al,whenclauses,extObjCls,states) = lower2(xs, functionTree, states, vars, knvars, extVars, whenclauses);
then
(vars,kv,extVars,eqns,re,ie,ae,iae,al,whenclauses,extObjCls,states);
// error reporting from now on
// if equation that cannot be translated to if expression
case ((e as DAE.IF_EQUATION(condition1 = _, source = DAE.SOURCE(info = info))) :: xs,functionTree,states,vars,knvars,extVars,whenclauses)
local String str;
equation
str = DAEDump.dumpElementsStr({e});
str = stringAppend("rewrite equations using if-expressions: ",str);
Error.addSourceMessage(Error.UNSUPPORTED_LANGUAGE_FEATURE, {"if-equations",str}, info);
then
fail();
// initial if equation that cannot be translated to if expression
case ((e as DAE.INITIAL_IF_EQUATION(condition1 = _, source = DAE.SOURCE(info = info))) :: xs,functionTree,states,vars,knvars,extVars,whenclauses)
local String str;
equation
str = DAEDump.dumpElementsStr({e});
str = stringAppend("rewrite equations using if-expressions: ",str);
Error.addSourceMessage(Error.UNSUPPORTED_LANGUAGE_FEATURE, {"if-equations",str}, info);
then
fail();
// initial algorithm
case (((e as DAE.INITIALALGORITHM(algorithm_ = _, source = DAE.SOURCE(info=info))) :: xs),functionTree,states,vars,knvars,extVars,whenclauses)
local String str;
equation
str = DAEDump.dumpElementsStr({e});
str = stringAppend("rewrite initial algorithms to initial equations",str);
Error.addSourceMessage(Error.UNSUPPORTED_LANGUAGE_FEATURE,{"initial algorithm",str}, info);
then
fail();
// constrain is not a standard Modelica function, but used in old libraries such as the old Multibody library.
// The OpenModelica backend does not support constrain, but the frontend does (Mathcore needs it for their backend).
// To get a meaningful error message when constrain is used we catch it here, instead of silently failing.
// User-defined functions should have fully qualified names here, so Absyn.IDENT should only match the builtin constrain function.
case (((e as DAE.NORETCALL(functionName = Absyn.IDENT(name = "constrain"), source = DAE.SOURCE(info=info))) :: xs),functionTree,states,vars,knvars,extVars,whenclauses)
local String str;
equation
str = DAEDump.dumpElementsStr({e});
str = stringAppend("rewrite code without using constrain",str);
Error.addSourceMessage(Error.UNSUPPORTED_LANGUAGE_FEATURE,{"constrain function",str}, info);
then
fail();
case (ddl::xs,functionTree,_,vars,knvars,extVars,_)
local DAE.Element ddl; String s3;
equation
// show only on failtrace!
true = RTOpts.debugFlag("failtrace");
Debug.fprintln("failtrace", "- BackendDAECreate.lower2 failed on: " +& DAEDump.dumpElementsStr({ddl}));
then
fail();
end matchcontinue;
end lower2;
/*
* lower all variables
*/
protected function lowerVar
"function: lowerVar
Transforms a DAE variable to DAE variable.
Includes changing the ComponentRef name to a simpler form
\'a\'.\'b\'{2}\'c\'{5} becomes
\'a.b{2}.c\' (as CREF_IDENT(\"a.b.c\",{2}) )
inputs: (DAE.Element, BackendDAE.BinTree /* states */)
outputs: Var"
input DAE.Element inElement;
input BackendDAE.BinTree inBinTree;
output BackendDAE.Var outVar;
output Option<DAE.Exp> outBinding;
output BackendDAE.BinTree outBinTree;
algorithm
(outVar,outBinding,outBinTree) := matchcontinue (inElement,inBinTree)
local
list<DAE.Subscript> dims;
DAE.ComponentRef name;
BackendDAE.VarKind kind_1;
Option<DAE.Exp> bind;
DAE.VarKind kind;
DAE.VarDirection dir;
BackendDAE.Type tp;
DAE.Flow flowPrefix;
DAE.Stream streamPrefix;
DAE.ElementSource source "origin of equation";
Option<DAE.VariableAttributes> dae_var_attr;
Option<SCode.Comment> comment;
BackendDAE.BinTree states;
DAE.Type t;
case (DAE.VAR(componentRef = name,
kind = kind,
direction = dir,
ty = t,
binding = bind,
dims = dims,
flowPrefix = flowPrefix,
streamPrefix = streamPrefix,
source = source,
variableAttributesOption = dae_var_attr,
absynCommentOption = comment),states)
equation
(kind_1,states) = lowerVarkind(kind, t, name, dir, flowPrefix, streamPrefix, states, dae_var_attr);
tp = lowerType(t);
then
(BackendDAE.VAR(name,kind_1,dir,tp,NONE(),NONE(),dims,-1,source,dae_var_attr,comment,flowPrefix,streamPrefix), bind, states);
end matchcontinue;
end lowerVar;
protected function lowerKnownVar
"function: lowerKnownVar
Helper function to lower2"
input DAE.Element inElement;
output BackendDAE.Var outVar;
algorithm
outVar := matchcontinue (inElement)
local
list<DAE.Subscript> dims;
DAE.ComponentRef name;
BackendDAE.VarKind kind_1;
Option<DAE.Exp> bind;
DAE.VarKind kind;
DAE.VarDirection dir;
BackendDAE.Type tp;
DAE.Flow flowPrefix;
DAE.Stream streamPrefix;
DAE.ElementSource source "origin of equation";
Option<DAE.VariableAttributes> dae_var_attr;
Option<SCode.Comment> comment;
DAE.Type t;
case (DAE.VAR(componentRef = name,
kind = kind,
direction = dir,
ty = t,
binding = bind,
dims = dims,
flowPrefix = flowPrefix,
streamPrefix = streamPrefix,
source = source,
variableAttributesOption = dae_var_attr,
absynCommentOption = comment))
equation
kind_1 = lowerKnownVarkind(kind, name, dir, flowPrefix);
tp = lowerType(t);
then
BackendDAE.VAR(name,kind_1,dir,tp,bind,NONE(),dims,-1,source,dae_var_attr,comment,flowPrefix,streamPrefix);
case (_)
equation
print("-BackendDAECreat.lowerKnownVar failed\n");
then
fail();
end matchcontinue;
end lowerKnownVar;
protected function lowerVarkind
"function: lowerVarkind
Helper function to lowerVar.
inputs: (DAE.VarKind,
Type,
DAE.ComponentRef,
DAE.VarDirection, /* input/output/bidir */
DAE.Flow,
DAE.Stream,
BackendDAE.BinTree /* states */)
outputs VarKind
NOTE: Fails for not states that are not algebraic
variables, e.g. parameters and constants"
input DAE.VarKind inVarKind;
input DAE.Type inType;
input DAE.ComponentRef inComponentRef;
input DAE.VarDirection inVarDirection;
input DAE.Flow inFlow;
input DAE.Stream inStream;
input BackendDAE.BinTree inBinTree;
input option<DAE.VariableAttributes> daeAttr;
output BackendDAE.VarKind outVarKind;
output BackendDAE.BinTree outBinTree;
algorithm
(outVarKind,outBinTree) := matchcontinue (inVarKind,inType,inComponentRef,inVarDirection,inFlow,inStream,inBinTree,daeAttr)
local
DAE.ComponentRef v,cr;
BackendDAE.BinTree states;
DAE.VarDirection dir;
DAE.Flow flowPrefix;
// States appear differentiated among equations
case (DAE.VARIABLE(),_,v,_,_,_,states,daeAttr)
equation
_ = BackendDAEUtil.treeGet(states, v);
then
(BackendDAE.STATE(),states);
// Or states have StateSelect.always
case (DAE.VARIABLE(),_,v,_,_,_,states,SOME(DAE.VAR_ATTR_REAL(_,_,_,_,_,_,_,SOME(DAE.ALWAYS()),_,_,_)))
equation
states = BackendDAEUtil.treeAdd(states, v, 0);
then (BackendDAE.STATE(),states);
case (DAE.VARIABLE(),(DAE.T_BOOL(_),_),cr,dir,flowPrefix,_,states,_)
equation
failure(BackendVariable.topLevelInput(cr, dir, flowPrefix));
then
(BackendDAE.DISCRETE(),states);
case (DAE.DISCRETE(),(DAE.T_BOOL(_),_),cr,dir,flowPrefix,_,states,_)
equation
failure(BackendVariable.topLevelInput(cr, dir, flowPrefix));
then
(BackendDAE.DISCRETE(),states);
case (DAE.VARIABLE(),(DAE.T_INTEGER(_),_),cr,dir,flowPrefix,_,states,_)
equation
failure(BackendVariable.topLevelInput(cr, dir, flowPrefix));
then
(BackendDAE.DISCRETE(),states);
case (DAE.DISCRETE(),(DAE.T_INTEGER(_),_),cr,dir,flowPrefix,_,states,_)
equation
failure(BackendVariable.topLevelInput(cr, dir, flowPrefix));
then
(BackendDAE.DISCRETE(),states);
case (DAE.VARIABLE(),_,cr,dir,flowPrefix,_,states,_)
equation
failure(BackendVariable.topLevelInput(cr, dir, flowPrefix));
then
(BackendDAE.VARIABLE(),states);
case (DAE.DISCRETE(),_,cr,dir,flowPrefix,_,states,_)
equation
failure(BackendVariable.topLevelInput(cr, dir, flowPrefix));
then
(BackendDAE.DISCRETE(),states);
end matchcontinue;
end lowerVarkind;
protected function lowerKnownVarkind
"function: lowerKnownVarkind
Helper function to lowerKnownVar.
NOTE: Fails for everything but parameters and constants and top level inputs"
input DAE.VarKind inVarKind;
input DAE.ComponentRef inComponentRef;
input DAE.VarDirection inVarDirection;
input DAE.Flow inFlow;
output BackendDAE.VarKind outVarKind;
algorithm
outVarKind := matchcontinue (inVarKind,inComponentRef,inVarDirection,inFlow)
local
DAE.ComponentRef cr;
DAE.VarDirection dir;
DAE.Flow flowPrefix;
case (DAE.PARAM(),_,_,_) then BackendDAE.PARAM();
case (DAE.CONST(),_,_,_) then BackendDAE.CONST();
case (DAE.VARIABLE(),cr,dir,flowPrefix)
equation
BackendVariable.topLevelInput(cr, dir, flowPrefix);
then
BackendDAE.VARIABLE();
// adrpo: topLevelInput might fail!
// case (DAE.VARIABLE(),cr,dir,flowPrefix)
// then
// BackendDAE.VARIABLE();
case (_,_,_,_)
equation
print("lower_known_varkind failed\n");
then
fail();
end matchcontinue;
end lowerKnownVarkind;
protected function lowerType
"Transforms a DAE.Type to Type
"
input DAE.Type inType;
output BackendDAE.Type outType;
algorithm
outType := matchcontinue(inType)
local
list<String> strLst;
Absyn.Path path;
case ((DAE.T_REAL(_),_)) then BackendDAE.REAL();
case ((DAE.T_INTEGER(_),_)) then BackendDAE.INT();
case ((DAE.T_BOOL(_),_)) then BackendDAE.BOOL();
case ((DAE.T_STRING(_),_)) then BackendDAE.STRING();
case ((DAE.T_ENUMERATION(names = strLst),_)) then BackendDAE.ENUMERATION(strLst);
case ((DAE.T_COMPLEX(complexClassType = ClassInf.EXTERNAL_OBJ(path)),_)) then BackendDAE.EXT_OBJECT(path);
end matchcontinue;
end lowerType;
protected function lowerExtObjVar
" Helper function to lower2
Fails for all variables except external object instances."
input DAE.Element inElement;
output BackendDAE.Var outVar;
algorithm
outVar:=
matchcontinue (inElement)
local
list<DAE.Subscript> dims;
DAE.ComponentRef name;
BackendDAE.VarKind kind_1;
Option<DAE.Exp> bind;
DAE.VarKind kind;
DAE.VarDirection dir;
BackendDAE.Type tp;
DAE.Flow flowPrefix;
DAE.Stream streamPrefix;
DAE.ElementSource source;
Option<DAE.VariableAttributes> dae_var_attr;
Option<SCode.Comment> comment;
DAE.Type t;
case (DAE.VAR(componentRef = name,
kind = kind,
direction = dir,
ty = t,
binding = bind,
dims = dims,
flowPrefix = flowPrefix,
streamPrefix = streamPrefix,
source = source,
variableAttributesOption = dae_var_attr,
absynCommentOption = comment))
equation
kind_1 = lowerExtObjVarkind(t);
tp = lowerType(t);
then
BackendDAE.VAR(name,kind_1,dir,tp,bind,NONE(),dims,-1,source,dae_var_attr,comment,flowPrefix,streamPrefix);
end matchcontinue;
end lowerExtObjVar;
protected function lowerExtObjVarkind
" Helper function to lowerExtObjVar.
NOTE: Fails for everything but External objects"
input DAE.Type inType;
output BackendDAE.VarKind outVarKind;
algorithm
outVarKind:=
matchcontinue (inType)
local Absyn.Path path;
case ((DAE.T_COMPLEX(complexClassType = ClassInf.EXTERNAL_OBJ(path)),_)) then BackendDAE.EXTOBJ(path);
end matchcontinue;
end lowerExtObjVarkind;
/*
* lower all equation types
*/
protected function lowerEqn
"function: lowerEqn
Helper function to lower2.
Transforms a DAE.Element to Equation."
input DAE.Element inElement;
output BackendDAE.Equation outEquation;
algorithm
outEquation := matchcontinue (inElement)
local DAE.Exp e1,e2;
DAE.ComponentRef cr1,cr2;
DAE.ElementSource source "the element source";
case (DAE.EQUATION(exp = e1,scalar = e2,source = source))
equation
e1 = ExpressionSimplify.simplify(e1);
e2 = ExpressionSimplify.simplify(e2);
then
BackendDAE.EQUATION(e1,e2,source);
case (DAE.INITIALEQUATION(exp1 = e1,exp2 = e2,source = source))
equation
e1 = ExpressionSimplify.simplify(e1);
e2 = ExpressionSimplify.simplify(e2);
then
BackendDAE.EQUATION(e1,e2,source);
case (DAE.EQUEQUATION(cr1 = cr1, cr2 = cr2,source = source))
equation
e1 = ExpressionSimplify.simplify(DAE.CREF(cr1, DAE.ET_OTHER()));
e2 = ExpressionSimplify.simplify(DAE.CREF(cr2, DAE.ET_OTHER()));
then
BackendDAE.EQUATION(e1,e2,source);
case (DAE.DEFINE(componentRef = cr1, exp = e2, source = source))
equation
e1 = ExpressionSimplify.simplify(DAE.CREF(cr1, DAE.ET_OTHER()));
e2 = ExpressionSimplify.simplify(e2);
then
BackendDAE.EQUATION(e1,e2,source);
case (DAE.INITIALDEFINE(componentRef = cr1, exp = e2, source = source))
equation
e1 = ExpressionSimplify.simplify(DAE.CREF(cr1, DAE.ET_OTHER()));
e2 = ExpressionSimplify.simplify(e2);
then
BackendDAE.EQUATION(e1,e2,source);
end matchcontinue;
end lowerEqn;
protected function lowerArrEqn
"function: lowerArrEqn
Helper function to lower2.
Transform a DAE.Element to MultiDimEquation."
input DAE.Element inElement;
input DAE.FunctionTree funcs;
output BackendDAE.MultiDimEquation outMultiDimEquation;
algorithm
outMultiDimEquation := matchcontinue (inElement,funcs)
local
DAE.Exp e1,e2,e1_1,e2_1,e1_2,e2_2,e1_3,e2_3;
list<BackendDAE.Value> ds;
DAE.ElementSource source;
case (DAE.ARRAY_EQUATION(dimension = ds, exp = e1, array = e2, source = source),funcs)
equation
e1_1 = Inline.inlineExp(e1,(SOME(funcs),{DAE.NORM_INLINE()}));
e2_1 = Inline.inlineExp(e2,(SOME(funcs),{DAE.NORM_INLINE()}));
(e1_2,_) = BackendDAEUtil.extendArrExp(e1_1,SOME(funcs));
(e2_2,_) = BackendDAEUtil.extendArrExp(e2_1,SOME(funcs));
e1_3 = ExpressionSimplify.simplify(e1_2);
e2_3 = ExpressionSimplify.simplify(e2_2);
then
BackendDAE.MULTIDIM_EQUATION(ds,e1_3,e2_3,source);