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Initialization.mo
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Initialization.mo
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/*
* This file is part of OpenModelica.
*
* Copyright (c) 1998-2014, Open Source Modelica Consortium (OSMC),
* c/o Linköpings universitet, Department of Computer and Information Science,
* SE-58183 Linköping, Sweden.
*
* All rights reserved.
*
* THIS PROGRAM IS PROVIDED UNDER THE TERMS OF GPL VERSION 3 LICENSE OR
* THIS OSMC PUBLIC LICENSE (OSMC-PL) VERSION 1.2.
* ANY USE, REPRODUCTION OR DISTRIBUTION OF THIS PROGRAM CONSTITUTES
* RECIPIENT'S ACCEPTANCE OF THE OSMC PUBLIC LICENSE OR THE GPL VERSION 3,
* ACCORDING TO RECIPIENTS CHOICE.
*
* The OpenModelica software and the Open Source Modelica
* Consortium (OSMC) Public License (OSMC-PL) are obtained
* from OSMC, 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.
*
*/
encapsulated package Initialization
" file: Initialization.mo
package: Initialization
description: Initialization.mo contains everything needed to set up the
BackendDAE for the initial system.
"
public
import Absyn;
import BackendDAE;
import BackendDAEFunc;
import DAE;
import HashSet;
import StringUtil;
import Util;
protected
import Array;
import BackendDAECreate;
import BackendDAEEXT;
import BackendDAEOptimize;
import BackendDAEUtil;
import BackendDump;
import BackendEquation;
import BackendVariable;
import BackendVarTransform;
import BaseHashSet;
import CheckModel;
import ComponentReference;
import DoubleEnded;
import ElementSource;
import Error;
import ExecStat.execStat;
import Expression;
import ExpressionDump;
import ExpressionSimplify;
import Flags;
import GCExt;
import IndexReduction;
import List;
import Matching;
import MetaModelica.Dangerous.listReverseInPlace;
import Sorting;
import SymbolicJacobian;
import SynchronousFeatures;
// =============================================================================
// section for all public functions
//
// These are functions that can be used to access the initialization.
// =============================================================================
public function solveInitialSystem "author: lochel
This function generates a algebraic system of equations for the initialization and solves it."
input BackendDAE.BackendDAE inDAE "simulation system";
output BackendDAE.BackendDAE outInitDAE "initialization system";
output Option<BackendDAE.BackendDAE> outInitDAE_lambda0 "initialization system for lambda=0";
output list<BackendDAE.Equation> outRemovedInitialEquations;
output BackendDAE.Variables outGlobalKnownVars;
output BackendDAE.BackendDAE outSimDAE = inDAE "updated with fixed attribute";
protected
BackendDAE.BackendDAE dae;
BackendDAE.BackendDAE initdae, initdae0;
BackendDAE.EqSystem initsyst, initsyst0;
BackendDAE.EqSystems systs;
BackendDAE.EquationArray eqns, reeqns;
list<BackendDAE.Equation> eqnsLst, reeqnsLst;
BackendDAE.Shared shared;
BackendDAE.Variables initVars;
BackendDAE.Variables vars, fixvars;
Boolean useHomotopy, datarecon=false;
String msg;
list<String> enabledModules, disabledModules;
HashSet.HashSet hs "contains all pre variables";
list<BackendDAE.Equation> removedEqns;
list<BackendDAE.Var> dumpVars, dumpVars2, outAllPrimaryParameters;
AvlSetCR.Tree allPrimaryParameters;
algorithm
try
//if Flags.isSet(Flags.DUMP_INITIAL_SYSTEM) then
// BackendDump.dumpBackendDAE(inDAE, "inDAE for initialization");
//end if;
// inline all when equations, if active with body else with lhs=pre(lhs)
dae := inlineWhenForInitialization(inDAE);
//if Flags.isSet(Flags.DUMP_INITIAL_SYSTEM) then
// BackendDump.dumpBackendDAE(dae, "inlineWhenForInitialization");
//end if;
execStat("inlineWhenForInitialization (initialization)");
(dae, initVars, outAllPrimaryParameters, outGlobalKnownVars) := selectInitializationVariablesDAE(dae);
if Flags.isSet(Flags.DUMP_INITIAL_SYSTEM) then
BackendDump.dumpVarList(outAllPrimaryParameters, "selected all primary parameters");
end if;
execStat("selectInitializationVariablesDAE (initialization)");
hs := collectPreVariables(dae);
execStat("collectPreVariables (initialization)");
// collect vars and eqns for initial system
vars := BackendVariable.emptyVars();
fixvars := BackendVariable.listVar(outAllPrimaryParameters);
eqns := BackendEquation.emptyEqnsSized(BackendVariable.varsSize(dae.shared.aliasVars)
+ BackendVariable.varsSize(dae.shared.globalKnownVars)
+ BackendVariable.varsSize(dae.shared.localKnownVars)
+ BackendEquation.getNumberOfEquations(dae.shared.initialEqs)
+ 2*BackendDAEUtil.daeSize(dae));
reeqns := BackendEquation.emptyEqnsSized(BackendEquation.getNumberOfEquations(dae.shared.removedEqs));
allPrimaryParameters := AvlSetCR.EMPTY();
for v in outAllPrimaryParameters loop
allPrimaryParameters := AvlSetCR.add(allPrimaryParameters, BackendVariable.varCref(v));
end for;
// check for datareconciliation and set the Flag, to set the Qualified Component names as TopLevel Input
if Util.isSome(inDAE.shared.dataReconciliationData) then
datarecon := true;
end if;
((vars, fixvars, eqns, _)) := BackendVariable.traverseBackendDAEVars(dae.shared.aliasVars, introducePreVarsForAliasVariables, (vars, fixvars, eqns, hs));
((vars, fixvars, eqns, _, _, _, _)) := BackendVariable.traverseBackendDAEVars(dae.shared.globalKnownVars, collectInitialVars, (vars, fixvars, eqns, arrayCreate(0,0), hs, allPrimaryParameters,datarecon));
((vars, fixvars, eqns, _, _, _, _)) := BackendVariable.traverseBackendDAEVars(dae.shared.localKnownVars, collectInitialVars, (vars, fixvars, eqns, arrayCreate(0,0), hs, allPrimaryParameters,datarecon));
((eqns, reeqns)) := BackendEquation.traverseEquationArray(dae.shared.initialEqs, collectInitialEqns, (eqns, reeqns));
((eqns, reeqns)) := BackendEquation.traverseEquationArray(dae.shared.removedEqs, collectInitialEqns, (eqns, reeqns));
//if Flags.isSet(Flags.DUMP_INITIAL_SYSTEM) then
// BackendDump.dumpEquationArray(eqns, "initial equations");
//end if;
execStat("collectInitialEqns (initialization)");
//((vars, fixvars, eqns, reeqns, _, _)) := List.fold(dae.eqs, collectInitialVarsEqnsSystem, ((vars, fixvars, eqns, reeqns, hs, allPrimaryParameters)));
(vars, fixvars, eqns, reeqns) := collectInitialVarsEqnsSystem(dae.eqs, vars, fixvars, eqns, reeqns, hs, allPrimaryParameters, datarecon);
((eqns, reeqns)) := BackendVariable.traverseBackendDAEVars(vars, collectInitialBindings, (eqns, reeqns));
execStat("collectInitialBindings (initialization)");
// Fix types of constant components in record bindings
eqnsLst := BackendEquation.equationList(eqns);
reeqnsLst := BackendEquation.equationList(reeqns);
(_, eqnsLst, reeqnsLst, _) := BackendDAECreate.patchRecordBindings({}, {}, BackendVariable.varList(dae.shared.globalKnownVars), eqnsLst, reeqnsLst, {});
eqns := BackendEquation.listEquation(eqnsLst);
reeqns := BackendEquation.listEquation(reeqnsLst);
// scalarize variables after collecting bindings
if Flags.isSet(Flags.NF_SCALARIZE) then
vars := BackendVariable.scalarizeVariables(vars);
initVars := BackendVariable.scalarizeVariables(initVars);
end if;
// replace initial(), sample(...), delay(...) and homotopy(...)
useHomotopy := BackendDAEUtil.traverseBackendDAEExpsEqns(eqns, simplifyInitialFunctions, false);
execStat("simplifyInitialFunctions (initialization)");
vars := BackendVariable.rehashVariables(vars);
fixvars := BackendVariable.rehashVariables(fixvars);
shared := BackendDAEUtil.createEmptyShared(BackendDAE.INITIALSYSTEM(), dae.shared.info, dae.shared.cache, dae.shared.graph);
shared := BackendDAEUtil.setSharedRemovedEqns(shared, BackendEquation.emptyEqns());
shared := BackendDAEUtil.setSharedGlobalKnownVars(shared, fixvars);
shared := BackendDAEUtil.setSharedOptimica(shared, dae.shared.constraints, dae.shared.classAttrs);
shared := BackendDAEUtil.setSharedFunctionTree(shared, dae.shared.functionTree);
execStat("setup shared object (initialization)");
// generate initial system and pre-balance it
initsyst := BackendDAEUtil.createEqSystem(vars, eqns);
initsyst := BackendDAEUtil.setEqSystRemovedEqns(initsyst, reeqns);
if useHomotopy then
initsyst0 := BackendDAEUtil.copyEqSystem(initsyst);
enabledModules := if Config.adaptiveHomotopy() then {"inlineHomotopy", "generateHomotopyComponents"} else {};
disabledModules := {};
else
enabledModules := {};
disabledModules := {"inlineHomotopy", "generateHomotopyComponents"};
end if;
(initdae, dumpVars, outRemovedInitialEquations) := createInitialDAEFromSystem(initsyst, shared, initVars, enabledModules, disabledModules, outGlobalKnownVars, false);
// update the fixed attribute in the simulation DAE
outSimDAE := BackendVariable.traverseBackendDAE(outSimDAE, updateFixedAttribute, BackendVariable.listVar(dumpVars));
// compute system for lambda=0
if useHomotopy and Config.globalHomotopy() then
initsyst0 := replaceHomotopyWithSimplifiedEqs(initsyst0);
initdae0 := BackendDAE.DAE({initsyst0}, shared);
initdae0 := BackendDAEUtil.setFunctionTree(initdae0, BackendDAEUtil.getFunctions(initdae.shared));
(initdae0, _, removedEqns) := createInitialDAEFromSystem(initsyst0, shared, initVars, {}, {"inlineHomotopy", "generateHomotopyComponents"}, outGlobalKnownVars, true);
outRemovedInitialEquations := listAppend(removedEqns, outRemovedInitialEquations);
initdae0.shared := BackendDAEUtil.setSharedGlobalKnownVars(initdae0.shared, BackendVariable.emptyVars());
outInitDAE_lambda0 := SOME(initdae0);
initdae := BackendDAEUtil.setFunctionTree(initdae, BackendDAEUtil.getFunctions(initdae0.shared)); // PH: why?
else
outInitDAE_lambda0 := NONE();
end if;
if Flags.isSet(Flags.DUMP_EQNINORDER) and Flags.isSet(Flags.DUMP_INITIAL_SYSTEM) then
BackendDump.dumpEqnsSolved(initdae, "initial system: eqns in order");
end if;
if Flags.isSet(Flags.ITERATION_VARS) then
BackendDAEOptimize.listAllIterationVariables(initdae);
end if;
if Flags.isSet(Flags.DUMP_BACKENDDAE_INFO) or Flags.isSet(Flags.DUMP_STATESELECTION_INFO) or Flags.isSet(Flags.DUMP_DISCRETEVARS_INFO) then
BackendDump.dumpCompShort(initdae);
end if;
outInitDAE := initdae;
else
Error.addCompilerError("No system for the symbolic initialization was generated");
fail();
end try;
end solveInitialSystem;
function createInitialDAEFromSystem
input BackendDAE.EqSystem inInitsyst;
input BackendDAE.Shared inShared;
input BackendDAE.Variables initVars;
input list<String> enabledModules;
input list<String> disabledModules;
input BackendDAE.Variables globalKnownVars;
input Boolean isLambda0;
output BackendDAE.BackendDAE initdae;
output list<BackendDAE.Var> dumpVars;
output list<BackendDAE.Equation> removedEqns;
protected
String systemStr = if isLambda0 then "initialization_lambda0" else "initialization";
BackendDAE.Shared shared = inShared;
BackendDAE.EqSystem initsyst;
list<BackendDAE.EqSystem> systs;
list<BackendDAE.Var> dumpVars2;
list<tuple<BackendDAEFunc.optimizationModule, String>> initOptModules;
tuple<BackendDAEFunc.StructurallySingularSystemHandlerFunc, String, BackendDAEFunc.stateDeselectionFunc, String> daeHandler;
tuple<BackendDAEFunc.matchingAlgorithmFunc, String> matchingAlgorithm;
Boolean b1, b2;
String msg;
algorithm
(initsyst, dumpVars) := preBalanceInitialSystem(inInitsyst, initVars, isLambda0);
execStat("preBalanceInitialSystem (" + systemStr + ")");
initdae := BackendDAE.DAE({initsyst}, shared);
if Flags.isSet(Flags.OPT_DAE_DUMP) then
BackendDump.dumpBackendDAE(initdae, "created " + systemStr + " system");
end if;
// split the initial system into independend subsystems
if Flags.isSet(Flags.PARTITION_INITIALIZATION) then
(systs, shared) := BackendDAEOptimize.partitionIndependentBlocksHelper(initsyst, shared, Error.getNumErrorMessages(), true);
initdae := BackendDAE.DAE(systs, shared);
execStat("partitionIndependentBlocks (" + systemStr + ")");
end if;
if Flags.isSet(Flags.OPT_DAE_DUMP) then
BackendDump.dumpBackendDAE(initdae, "partitioned " + systemStr + " system");
end if;
// fix over- and under-constrained subsystems
(initdae, dumpVars2, removedEqns) := analyzeInitialSystem(initdae, initVars);
dumpVars := listAppend(dumpVars, dumpVars2) annotation(__OpenModelica_DisableListAppendWarning=true);
execStat("analyzeInitialSystem (" + systemStr + ")");
// some debug prints
if Flags.isSet(Flags.DUMP_INITIAL_SYSTEM) then
BackendDump.dumpBackendDAE(initdae, systemStr);
end if;
// now let's solve the system!
initdae := BackendDAEUtil.mapEqSystem(initdae, solveInitialSystemEqSystem);
execStat("solveInitialSystemEqSystem (" + systemStr + ")");
// solve system
initdae := BackendDAEUtil.transformBackendDAE(initdae, SOME((BackendDAE.NO_INDEX_REDUCTION(), BackendDAE.EXACT())), NONE(), NONE());
execStat("matching and sorting (n=" + String(BackendDAEUtil.daeSize(initdae)) + ") (" + systemStr + ")");
// add initial assignmnents to all algorithms
initdae := BackendDAEOptimize.addInitialStmtsToAlgorithms(initdae, true);
// simplify system
initdae := BackendDAEUtil.setDAEGlobalKnownVars(initdae, globalKnownVars);
initOptModules := BackendDAEUtil.getInitOptModules(NONE(), enabledModules, disabledModules);
matchingAlgorithm := BackendDAEUtil.getMatchingAlgorithm(NONE());
daeHandler := BackendDAEUtil.getIndexReductionMethod(SOME("none"));
initdae := BackendDAEUtil.postOptimizeDAE(initdae, initOptModules, matchingAlgorithm, daeHandler);
if Flags.isSet(Flags.DUMP_INITIAL_SYSTEM) then
BackendDump.dumpBackendDAE(initdae, "solved " + systemStr);
if Flags.isSet(Flags.ADDITIONAL_GRAPHVIZ_DUMP) then
BackendDump.graphvizBackendDAE(initdae, "dumpinitialsystem");
end if;
end if;
// Remove the globalKnownVars for the initialization set again
initdae.shared := BackendDAEUtil.setSharedGlobalKnownVars(initdae.shared, BackendVariable.emptyVars());
// warn about selected default initial conditions
b1 := not listEmpty(dumpVars);
b2 := not listEmpty(removedEqns);
msg := System.gettext("For more information set -d=initialization. In OMEdit Tools->Options->Simulation->Show additional information from the initialization process, in OMNotebook call setCommandLineOptions(\"-d=initialization\")");
if Flags.isSet(Flags.INITIALIZATION) then
if b1 then
Error.addCompilerWarning("Assuming fixed start value for the following " + intString(listLength(dumpVars)) + " variables:\n" + warnAboutVars2(dumpVars));
end if;
if b2 then
Error.addMessage(Error.INITIALIZATION_OVER_SPECIFIED, {"The following " + intString(listLength(removedEqns)) + " initial equations are redundant, so they are removed from the " + systemStr + " system:\n" + warnAboutEqns2(removedEqns)});
end if;
else
if b1 then
Error.addMessage(Error.INITIALIZATION_NOT_FULLY_SPECIFIED, {msg});
end if;
if b2 then
Error.addMessage(Error.INITIALIZATION_OVER_SPECIFIED, {msg});
end if;
end if;
end createInitialDAEFromSystem;
// =============================================================================
// section for helper functions of solveInitialSystem
//
// =============================================================================
protected function solveInitialSystemEqSystem "author: lochel
This solves the generated system."
input BackendDAE.EqSystem isyst;
input BackendDAE.Shared inShared;
output BackendDAE.EqSystem osyst = isyst;
output BackendDAE.Shared outShared = inShared "unused";
protected
Integer nVars, nEqns;
algorithm
nEqns := BackendDAEUtil.systemSize(isyst);
nVars := BackendVariable.varsSize(BackendVariable.daeVars(isyst));
// over-determined system: nEqns > nVars
if intGt(nEqns, nVars) then
if Flags.isSet(Flags.INITIALIZATION) then
Error.addCompilerWarning("It was not possible to solve the over-determined initial system (" + intString(nEqns) + " equations and " + intString(nVars) + " variables)");
BackendDump.dumpEqSystem(isyst, "It was not possible to solve the over-determined initial system (" + intString(nEqns) + " equations and " + intString(nVars) + " variables)");
end if;
fail();
end if;
// under-determined system: nEqns < nVars
if intLt(nEqns, nVars) then
if Flags.isSet(Flags.INITIALIZATION) then
Error.addCompilerWarning("It was not possible to solve the under-determined initial system (" + intString(nEqns) + " equations and " + intString(nVars) + " variables)");
BackendDump.dumpEqSystem(isyst, "It was not possible to solve the under-determined initial system (" + intString(nEqns) + " equations and " + intString(nVars) + " variables)");
end if;
fail();
end if;
end solveInitialSystemEqSystem;
// =============================================================================
// section for inlining when-clauses
//
// This section contains all the helper functions to replace all when-clauses
// from a given BackendDAE to get the initial equation system.
// =============================================================================
protected function inlineWhenForInitialization "author: lochel
This function inlines when-clauses for the initialization."
input BackendDAE.BackendDAE inDAE;
output BackendDAE.BackendDAE outDAE = inDAE;
protected
list<BackendDAE.Equation> eqnlst;
list<BackendDAE.Equation> clockEqnsLst;
HashSet.HashSet leftCrs = HashSet.emptyHashSet() "dummy hash set - should always be empty";
algorithm
outDAE.eqs := List.map(inDAE.eqs, inlineWhenForInitializationSystem);
(eqnlst, _) := BackendEquation.traverseEquationArray(inDAE.shared.removedEqs, inlineWhenForInitializationEquation, ({}, leftCrs));
clockEqnsLst := BackendEquation.traverseEquationArray(inDAE.shared.removedEqs, SynchronousFeatures.getBoolClockWhenClauses, {});
eqnlst := listAppend(clockEqnsLst, eqnlst);
outDAE.shared := BackendDAEUtil.setSharedRemovedEqns(outDAE.shared, BackendEquation.listEquation(eqnlst));
end inlineWhenForInitialization;
protected function inlineWhenForInitializationSystem "author: lochel"
input BackendDAE.EqSystem inEqSystem;
output BackendDAE.EqSystem outEqSystem;
protected
list<BackendDAE.Equation> eqnlst;
HashSet.HashSet leftCrs = HashSet.emptyHashSet() "hack for #3209";
list<DAE.ComponentRef> crefLst;
algorithm
(eqnlst, leftCrs) := BackendEquation.traverseEquationArray(inEqSystem.orderedEqs, inlineWhenForInitializationEquation, ({}, leftCrs));
crefLst := BaseHashSet.hashSetList(leftCrs);
eqnlst := generateInactiveWhenEquationForInitialization(crefLst, DAE.emptyElementSource, eqnlst);
outEqSystem := BackendDAEUtil.setEqSystEqs(inEqSystem, BackendEquation.listEquation(eqnlst));
outEqSystem := BackendDAEUtil.clearEqSyst(outEqSystem);
end inlineWhenForInitializationSystem;
protected function inlineWhenForInitializationEquation "author: lochel"
input BackendDAE.Equation inEq;
input tuple<list<BackendDAE.Equation>, HashSet.HashSet> inTpl;
output BackendDAE.Equation outEq = inEq;
output tuple<list<BackendDAE.Equation>, HashSet.HashSet> outTpl;
protected
BackendDAE.EquationAttributes eqAttr;
BackendDAE.WhenEquation weqn;
DAE.Algorithm alg;
DAE.ElementSource source;
DAE.Expand crefExpand;
HashSet.HashSet leftCrs;
Integer size;
list<BackendDAE.Equation> eqns;
list<BackendDAE.Equation> accEq;
list<DAE.Statement> stmts;
algorithm
(accEq, leftCrs) := inTpl;
outTpl := match (inEq)
// when equation
case BackendDAE.WHEN_EQUATION(whenEquation=weqn, source=source, attr=eqAttr) equation
(leftCrs, eqns) = inlineWhenForInitializationWhenEquation(weqn, source, eqAttr, accEq, leftCrs);
then (eqns, leftCrs);
// algorithm
case BackendDAE.ALGORITHM(alg=alg, source=source, expand=crefExpand) equation
DAE.ALGORITHM_STMTS(statementLst=stmts) = alg;
(stmts, leftCrs) = inlineWhenForInitializationWhenAlgorithm(stmts, {}, leftCrs);
alg = DAE.ALGORITHM_STMTS(stmts);
size = listLength(CheckModel.checkAndGetAlgorithmOutputs(alg, source, crefExpand));
eqns = List.consOnTrue(not listEmpty(stmts), BackendDAE.ALGORITHM(size, alg, source, crefExpand, BackendDAE.EQ_ATTR_DEFAULT_DYNAMIC), accEq);
then (eqns, leftCrs);
else (inEq::accEq, leftCrs);
end match;
end inlineWhenForInitializationEquation;
protected function inlineWhenForInitializationWhenEquation "author: lochel"
input BackendDAE.WhenEquation inWEqn;
input DAE.ElementSource inSource;
input BackendDAE.EquationAttributes inEqAttr;
input list<BackendDAE.Equation> inEqns;
input HashSet.HashSet inLeftCrs;
output HashSet.HashSet outLeftCrs = inLeftCrs;
output list<BackendDAE.Equation> outEqns = inEqns;
protected
DAE.Exp lhs, condition, e;
list<DAE.Exp> eLst;
BackendDAE.Equation eqn;
list<BackendDAE.WhenOperator> whenStmtLst;
DAE.ComponentRef cr;
list<DAE.ComponentRef > crefLst;
Boolean active;
DAE.ElementSource source;
algorithm
outEqns := match(inWEqn)
case BackendDAE.WHEN_STMTS(condition=condition,whenStmtLst=whenStmtLst) algorithm
active := Expression.containsInitialCall(condition);
for stmt in whenStmtLst loop
_ := match stmt
case BackendDAE.ASSIGN(left = DAE.CREF(componentRef = cr), right = e) equation
if active then
lhs = Expression.crefExp(cr);
eqn = BackendEquation.generateEquation(lhs, e, inSource, inEqAttr);
outEqns = eqn::outEqns;
else
outLeftCrs = List.fold(ComponentReference.expandCref(cr, true), BaseHashSet.add, outLeftCrs);
end if;
then ();
case BackendDAE.ASSIGN(left = lhs as DAE.TUPLE(PR = eLst), right = e) algorithm
if active then
eqn := BackendEquation.generateEquation(lhs, e, inSource, inEqAttr);
outEqns := eqn::outEqns;
else
crefLst := List.flatten(List.map(eLst,Expression.getAllCrefs));
for cr in crefLst loop
outLeftCrs := List.fold(ComponentReference.expandCref(cr, true), BaseHashSet.add, outLeftCrs);
end for;
end if;
then ();
case BackendDAE.NORETCALL(exp=e, source=source) algorithm
if active then
//eqn := BackendEquation.generateEquation(DAE.CREF(DAE.emptyCref, DAE.T_UNKNOWN_DEFAULT), e, inSource, inEqAttr);
eqn := BackendDAE.ALGORITHM(0, DAE.ALGORITHM_STMTS({DAE.STMT_NORETCALL(e, source)}), inSource, DAE.EXPAND(), BackendDAE.EQ_ATTR_DEFAULT_INITIAL);
outEqns := eqn::outEqns;
end if;
then ();
// Everything else doesn't have to be handled
else ();
end match;
end for;
then outEqns;
else outEqns;
end match;
end inlineWhenForInitializationWhenEquation;
protected function inlineWhenForInitializationWhenAlgorithm "author: lochel
This function generates out of a given when-algorithm, a algorithm for the initialization-problem."
input list< DAE.Statement> inStmts;
input list< DAE.Statement> inAcc "={}";
input HashSet.HashSet inLeftCrs;
output list< DAE.Statement> outStmts;
output HashSet.HashSet outLeftCrs;
algorithm
(outStmts, outLeftCrs) := match(inStmts)
local
DAE.Statement stmt;
list<DAE.Statement> stmts, rest;
HashSet.HashSet leftCrs;
case {}
then (listReverse(inAcc), inLeftCrs);
// when statement
case (stmt as DAE.STMT_WHEN())::rest equation
// for when statements it is not necessary that all branches have the same left hand side variables
// -> take care that for each left hand side an assigment is generated
(stmts, leftCrs) = inlineWhenForInitializationWhenStmt(stmt, inLeftCrs, inAcc);
(stmts, leftCrs) = inlineWhenForInitializationWhenAlgorithm(rest, stmts, leftCrs);
then (stmts, leftCrs);
// no when statement
case stmt::rest equation
(stmts, leftCrs) = inlineWhenForInitializationWhenAlgorithm(rest, stmt::inAcc, inLeftCrs);
then (stmts, leftCrs);
end match;
end inlineWhenForInitializationWhenAlgorithm;
protected function inlineWhenForInitializationWhenStmt "author: lochel
This function generates out of a given when-algorithm, a algorithm for the initialization-problem."
input DAE.Statement inWhenStatement;
input HashSet.HashSet inLeftCrs;
input list< DAE.Statement> inAcc;
output list< DAE.Statement> outStmts;
output HashSet.HashSet outLeftCrs;
algorithm
(outStmts, outLeftCrs) := match(inWhenStatement)
local
DAE.Exp condition;
list<DAE.ComponentRef> crefLst;
DAE.Statement stmt;
list<DAE.Statement> stmts;
HashSet.HashSet leftCrs;
// active when equation during initialization
case DAE.STMT_WHEN(exp=condition, statementLst=stmts) guard
Expression.containsInitialCall(condition)
equation
stmts = List.foldr(stmts, List.consr, inAcc);
then (stmts, inLeftCrs);
// inactive when equation during initialization
case DAE.STMT_WHEN(exp=_, statementLst=stmts, elseWhen=NONE()) equation
crefLst = CheckModel.algorithmStatementListOutputs(stmts, DAE.EXPAND()); // expand as we're in an algorithm
leftCrs = List.fold(crefLst, BaseHashSet.add, inLeftCrs);
then (inAcc, leftCrs);
// inactive when equation during initialization with elsewhen part
case DAE.STMT_WHEN(exp=_, statementLst=stmts, elseWhen=SOME(stmt)) equation
crefLst = CheckModel.algorithmStatementListOutputs(stmts, DAE.EXPAND()); // expand as we're in an algorithm
leftCrs = List.fold(crefLst, BaseHashSet.add, inLeftCrs);
(stmts, leftCrs) = inlineWhenForInitializationWhenStmt(stmt, leftCrs, inAcc);
then (stmts, leftCrs);
else equation
Error.addInternalError("function inlineWhenForInitializationWhenStmt failed", sourceInfo());
then fail();
end match;
end inlineWhenForInitializationWhenStmt;
protected function generateInactiveWhenEquationForInitialization "author: lochel"
input list<DAE.ComponentRef> inCrLst;
input DAE.ElementSource inSource;
input list<BackendDAE.Equation> inEqns;
output list<BackendDAE.Equation> outEqns = inEqns;
protected
DAE.Type identType;
DAE.Exp crefExp, crefPreExp;
BackendDAE.Equation eqn;
algorithm
for cr in inCrLst loop
identType := ComponentReference.crefTypeConsiderSubs(cr);
crefExp := DAE.CREF(cr, identType);
crefPreExp := Expression.makePureBuiltinCall("pre", {crefExp}, DAE.T_BOOL_DEFAULT);
eqn := BackendDAE.EQUATION(crefExp, crefPreExp, inSource, BackendDAE.EQ_ATTR_DEFAULT_DYNAMIC);
outEqns := eqn::outEqns;
end for;
end generateInactiveWhenEquationForInitialization;
// =============================================================================
// section for collecting all variables, of which the left limit is also used.
//
// collect all pre variables in time equations
// =============================================================================
protected function collectPreVariables "author: lochel"
input BackendDAE.BackendDAE inDAE;
output HashSet.HashSet outHS;
protected
//list<DAE.ComponentRef> crefs;
algorithm
//BackendDump.dumpBackendDAE(inDAE, "inDAE");
outHS := List.fold(inDAE.eqs, collectPreVariablesEqSystem, HashSet.emptyHashSet());
((_, outHS)) := BackendDAEUtil.traverseBackendDAEExpsEqns( inDAE.shared.initialEqs, Expression.traverseSubexpressionsHelper,
(collectPreVariablesTraverseExp, outHS) );
((_, outHS)) := BackendDAEUtil.traverseBackendDAEExpsEqns( inDAE.shared.removedEqs, Expression.traverseSubexpressionsHelper,
(collectPreVariablesTraverseExp, outHS) );
//print("collectPreVariables:\n");
//crefs := BaseHashSet.hashSetList(outHS);
//BackendDump.debuglst(crefs, ComponentReference.printComponentRefStr, "\n", "\n");
end collectPreVariables;
public function collectPreVariablesEqSystem
input BackendDAE.EqSystem inSyst;
input HashSet.HashSet inHS;
output HashSet.HashSet outHS;
algorithm
((_, outHS)) := BackendDAEUtil.traverseBackendDAEExpsEqns( inSyst.orderedEqs, Expression.traverseSubexpressionsHelper,
(collectPreVariablesTraverseExp, inHS) );
((_, outHS)) := BackendDAEUtil.traverseBackendDAEExpsEqns( inSyst.removedEqs, Expression.traverseSubexpressionsHelper,
(collectPreVariablesTraverseExp, outHS) );
end collectPreVariablesEqSystem;
public function collectPreVariablesTraverseExp
input DAE.Exp inExp;
input HashSet.HashSet inHS;
output DAE.Exp outExp = inExp;
output HashSet.HashSet outHS;
algorithm
outHS := match (inExp)
case DAE.CALL(path=Absyn.IDENT(name="pre")) equation
(_, outHS) = Expression.traverseExpBottomUp(inExp, collectPreVariablesTraverseExp2, inHS);
then outHS;
case DAE.CALL(path=Absyn.IDENT(name="change")) equation
(_, outHS) = Expression.traverseExpBottomUp(inExp, collectPreVariablesTraverseExp2, inHS);
then outHS;
case DAE.CALL(path=Absyn.IDENT(name="edge")) equation
(_, outHS) = Expression.traverseExpBottomUp(inExp, collectPreVariablesTraverseExp2, inHS);
then outHS;
else inHS;
end match;
end collectPreVariablesTraverseExp;
protected function collectPreVariablesTraverseExp2 "author: lochel"
input DAE.Exp inExp;
input HashSet.HashSet inHS;
output DAE.Exp outExp = inExp;
output HashSet.HashSet outHS;
algorithm
outHS := match inExp
local
list<DAE.ComponentRef> crefs;
DAE.ComponentRef cr;
case DAE.CREF(componentRef=cr) equation
crefs = ComponentReference.expandCref(cr, true);
outHS = List.fold(crefs, BaseHashSet.add, inHS);
then outHS;
else inHS;
end match;
end collectPreVariablesTraverseExp2;
protected function warnAboutVars2 "author: lochel
TODO: Replace this with an general BackendDump implementation."
input list<BackendDAE.Var> vars;
output String outString;
protected
list<String> strs;
Integer len;
Integer size;
algorithm
if listEmpty(vars) then
outString := "";
return;
end if;
strs := list(BackendDump.varString(v) for v in vars);
len := listLength(strs);
size := sum(stringLength(s) for s in strs) + len*10;
outString := warnAboutVars2Work(strs, " ", "\n", size);
end warnAboutVars2;
function warnAboutVars2Work
input list<String> strs;
input String prefix;
input String suffix;
input Integer size;
output String s="";
protected
// Allocate a string of the exact required length
System.StringAllocator sb=System.StringAllocator(size);
Integer i=0;
algorithm
for str in strs loop
System.stringAllocatorStringCopy(sb, prefix, i);
i := i+stringLength(prefix);
System.stringAllocatorStringCopy(sb, str, i);
i := i+stringLength(str);
System.stringAllocatorStringCopy(sb, suffix, i);
i := i+stringLength(suffix);
end for;
// Return the string
s := System.stringAllocatorResult(sb,s);
end warnAboutVars2Work;
protected function warnAboutEqns2 "author: lochel
TODO: Replace this with an general BackendDump implementation."
input list<BackendDAE.Equation> inEqns;
output String outString;
algorithm
outString := match(inEqns)
local
BackendDAE.Equation eq;
list<BackendDAE.Equation> eqns;
String crStr;
String str;
case ({}) then "";
case (eq::{}) equation
crStr = " " + BackendDump.equationString(eq);
then crStr;
case (eq::eqns) equation
crStr = BackendDump.equationString(eq);
str = " " + crStr + "\n" + warnAboutEqns2(eqns);
then str;
end match;
end warnAboutEqns2;
// =============================================================================
// section for selecting initialization variables
//
// - unfixed state
// - secondary parameter
// - unfixed discrete -> pre(vd)
// =============================================================================
protected function selectInitializationVariablesDAE "author: lochel
This function wraps selectInitializationVariables.
All primary parameters get removed from the dae."
input output BackendDAE.BackendDAE dae;
output BackendDAE.Variables outInitVars;
output list<BackendDAE.Var> outAllPrimaryParameters = {};
output BackendDAE.Variables outGlobalKnownVars = dae.shared.globalKnownVars;
protected
BackendDAE.Variables otherVariables, globalKnownVars;
BackendDAE.EquationArray globalKnownVarsEqns;
BackendDAE.EqSystem globalKnownVarsSystem;
BackendDAE.AdjacencyMatrix m, mT;
array<Integer> ass1 "eqn := ass1[var]";
array<Integer> ass2 "var := ass2[eqn]";
list<list<Integer>> comps;
list<Integer> flatComps;
Integer nGlobalKnownVars;
array<Integer> secondary;
BackendDAE.Var v;
DAE.Exp bindExp;
HashSet.HashSet hs;
list<DAE.ComponentRef> crefs;
list<BackendDAE.Var> globalKnownVarList = {};
algorithm
/* #6262, fix start values for input, when start exp has non constant bindings associated with a parameter (e.g)
input Real x(start = x_start);
parameter Real x_start = 6.0;
*/
for var in BackendVariable.varList(dae.shared.globalKnownVars) loop
if BackendVariable.isInput(var) and not Expression.isConstValue(BackendVariable.varStartValue(var)) and not Types.isArray(BackendVariable.varType(var)) then
bindExp := BackendVariable.varStartValue(var);
(v, _) := BackendVariable.getVarSingle(Expression.expCref(bindExp), dae.shared.globalKnownVars);
var := BackendVariable.setVarStartValueOption(var, v.bindExp);
end if;
globalKnownVarList := var :: globalKnownVarList;
end for;
dae := BackendDAEUtil.setDAEGlobalKnownVars(dae, BackendVariable.listVar(globalKnownVarList));
// lochel: workaround to align all elements
globalKnownVars := BackendVariable.listVar(BackendVariable.varList(dae.shared.globalKnownVars));
outInitVars := selectInitializationVariables(dae.eqs);
outInitVars := BackendVariable.traverseBackendDAEVars(dae.shared.globalKnownVars, selectInitializationVariables2, outInitVars);
outInitVars := BackendVariable.traverseBackendDAEVars(dae.shared.aliasVars, selectInitializationVariables2, outInitVars);
globalKnownVars := BackendVariable.traverseBackendDAEVars(dae.shared.externalObjects, addExtObjToGlobalKnownVars, globalKnownVars);
nGlobalKnownVars := BackendVariable.varsSize(globalKnownVars);
otherVariables := BackendVariable.emptyVarsSized(nGlobalKnownVars);
globalKnownVarsEqns := BackendEquation.emptyEqnsSized(nGlobalKnownVars);
globalKnownVarsEqns := BackendVariable.traverseBackendDAEVars(globalKnownVars, createGlobalKnownVarsEquations, globalKnownVarsEqns);
if nGlobalKnownVars > 0 then
globalKnownVarsSystem := BackendDAEUtil.createEqSystem(globalKnownVars, globalKnownVarsEqns);
(m, mT) := BackendDAEUtil.adjacencyMatrix(globalKnownVarsSystem, BackendDAE.NORMAL(), NONE(), BackendDAEUtil.isInitializationDAE(dae.shared));
//BackendDump.dumpAdjacencyMatrix(m);
//BackendDump.dumpAdjacencyMatrixT(mT);
// match the system
// ass1 and ass2 should be {1, 2, ..., nGlobalKnownVars}
(ass1, ass2) := Matching.PerfectMatching(m);
//BackendDump.dumpMatchingVars(ass1);
//BackendDump.dumpMatchingEqns(ass2);
comps := Sorting.Tarjan(m, ass1);
//BackendDump.dumpComponentsOLD(comps);
comps := mapListIndices(comps, ass2) "map to var indices (not really needed, since ass2 should be {1, 2, ..., nParam})" ;
//BackendDump.dumpComponentsOLD(comps);
// flattern list and look for cyclic dependencies
flatComps := list(flattenParamComp(comp, globalKnownVars) for comp in comps);
//BackendDump.dumpAdjacencyRow(flatComps);
//BackendDump.dumpVariables(globalKnownVars, "globalKnownVars");
// select secondary parameters
secondary := arrayCreate(nGlobalKnownVars, 0);
secondary := selectSecondaryParameters(flatComps, globalKnownVars, mT, secondary);
// get primary and secondary parameters and variables
hs := HashSet.emptyHashSetSized(2*nGlobalKnownVars+1);
for i in flatComps loop
v := BackendVariable.getVarAt(globalKnownVars, i);
bindExp := BackendVariable.varBindExpStartValueNoFail(v);
crefs := Expression.getAllCrefsExpanded(bindExp);
//BackendDump.dumpVarList({v}, intString(i));
_ := match(v)
// primary parameter
case (BackendDAE.VAR(varKind=BackendDAE.PARAM())) guard 0 == secondary[i] and BaseHashSet.hasAll(crefs, hs)
equation
outAllPrimaryParameters = v::outAllPrimaryParameters;
hs = BaseHashSet.add(BackendVariable.varCref(v), hs);
then ();
// primary external object
case (BackendDAE.VAR(varKind=BackendDAE.EXTOBJ(), bindExp=SOME(bindExp))) guard 0 == secondary[i] and BaseHashSet.hasAll(crefs, hs)
equation
outAllPrimaryParameters = v::outAllPrimaryParameters;
v = BackendVariable.setVarFixed(v, true);
outGlobalKnownVars = BackendVariable.addVar(v, outGlobalKnownVars);
hs = BaseHashSet.add(BackendVariable.varCref(v), hs);
then ();
// secondary parameter
case (BackendDAE.VAR(varKind=BackendDAE.PARAM()))
equation
otherVariables = BackendVariable.addVar(v, otherVariables);
v = BackendVariable.setVarFixed(v, false);
outInitVars = BackendVariable.addVar(v, outInitVars);
outGlobalKnownVars = BackendVariable.addVar(v, outGlobalKnownVars);
then ();
// primary variable
case (_) guard BackendVariable.isVarAlg(v) and 0 == secondary[i] and BaseHashSet.hasAll(crefs, hs)
equation
otherVariables = BackendVariable.addVar(v, otherVariables);
v = BackendVariable.setVarFixed(v, true);
outGlobalKnownVars = BackendVariable.addVar(v, outGlobalKnownVars);
hs = BaseHashSet.add(BackendVariable.varCref(v), hs);
then ();
// secondary variable
case (_) guard BackendVariable.isVarAlg(v)
equation
otherVariables = BackendVariable.addVar(v, otherVariables);
v = BackendVariable.setVarFixed(v, false);
outGlobalKnownVars = BackendVariable.addVar(v, outGlobalKnownVars);
then ();
else
equation
otherVariables = BackendVariable.addVar(v, otherVariables);
then ();
end match;
end for;
GCExt.free(secondary);
outAllPrimaryParameters := listReverse(outAllPrimaryParameters);
dae := BackendDAEUtil.setDAEGlobalKnownVars(dae, otherVariables);
//BackendDump.dumpVarList(outAllPrimaryParameters, "outAllPrimaryParameters");
//BackendDump.dumpVariables(otherVariables, "otherVariables");
end if;
end selectInitializationVariablesDAE;
function addExtObjToGlobalKnownVars "
Sets fixed=true for external objects with binding and adds them to globalKnownVars
author: ptaeuber"
input output BackendDAE.Var extObj;
input output BackendDAE.Variables globalKnownVars;
algorithm
globalKnownVars := match(extObj)
local
BackendDAE.Var var;
// external object with binding
case (BackendDAE.VAR(varKind=BackendDAE.EXTOBJ(), bindExp=SOME(_))) equation
var = BackendVariable.setVarFixed(extObj, true);
globalKnownVars = BackendVariable.addVar(var, globalKnownVars);
then (globalKnownVars);
else
then (globalKnownVars);
end match;
end addExtObjToGlobalKnownVars;
protected function createGlobalKnownVarsEquations
"Creates BackendDAE.EQUATION()s from the globalKnownVars
author: ptaeuber"
input output BackendDAE.Var var;
input output BackendDAE.EquationArray parameterEqns;
protected
DAE.Exp lhs, rhs, startValue;
BackendDAE.Equation eqn;
BackendDAE.Var v;
String s, str;
SourceInfo info;
algorithm
lhs := BackendVariable.varExp(var);
if BackendVariable.isParam(var) and not BackendVariable.varHasBindExp(var) and BackendVariable.varFixed(var) then
s := ExpressionDump.printExpStr(lhs);
startValue := BackendVariable.varStartValue(var);
str := ExpressionDump.printExpStr(startValue);
v := BackendVariable.setVarKind(var, BackendDAE.VARIABLE());
v := BackendVariable.setBindExp(v, SOME(startValue));
v := BackendVariable.setVarFixed(v, true);
info := ElementSource.getElementSourceFileInfo(BackendVariable.getVarSource(v));
Error.addSourceMessage(Error.UNBOUND_PARAMETER_WITH_START_VALUE_WARNING, {s, str}, info);
end if;
rhs := BackendVariable.varBindExpStartValueNoFail(var);
eqn := BackendDAE.EQUATION(lhs, rhs, DAE.emptyElementSource, BackendDAE.EQ_ATTR_DEFAULT_BINDING);
parameterEqns := BackendEquation.add(eqn, parameterEqns);
end createGlobalKnownVarsEquations;
protected function markIndex
input Integer inIndex;
input array<Integer> inArray;
output array<Integer> outArray = inArray;
algorithm
outArray[inIndex] := 1;
end markIndex;
protected function selectSecondaryParameters
input list<Integer> inOrdering;
input BackendDAE.Variables inParameters;
input BackendDAE.AdjacencyMatrix inM;
input array<Integer> inSecondaryParams;
output array<Integer> outSecondaryParams;
algorithm
outSecondaryParams := match inOrdering
local
Integer i;
array<Integer> secondaryParams;
list<Integer> rest;
BackendDAE.Var param;
case {}
then inSecondaryParams;
// fixed=false
case i::rest equation
param = BackendVariable.getVarAt(inParameters, i);
secondaryParams = if (if BackendVariable.isVarAlg(param) then false else not BackendVariable.varFixed(param)) or 1 == inSecondaryParams[i]
then List.fold(inM[i], markIndex, inSecondaryParams) else inSecondaryParams;
secondaryParams = selectSecondaryParameters(rest, inParameters, inM, secondaryParams);
then secondaryParams;
end match;
end selectSecondaryParameters;
public function flattenParamComp
input list<Integer> paramIndices;
input BackendDAE.Variables inAllParameters;