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circus/src/jcircus/newutil/ExprUtil.java
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package jcircus.newutil;
import java.util.ArrayList;
import java.util.List;
import java.util.Vector;
import jcircus.anns.MuCallAnn;
import jcircus.parallelism.Consumer;
import net.sourceforge.czt.circus.ast.Action1;
import net.sourceforge.czt.circus.ast.Action2;
import net.sourceforge.czt.circus.ast.AssignmentCommand;
import net.sourceforge.czt.circus.ast.AssignmentPairs;
import net.sourceforge.czt.circus.ast.BasicAction;
import net.sourceforge.czt.circus.ast.CallAction;
import net.sourceforge.czt.circus.ast.CircusAction;
import net.sourceforge.czt.circus.ast.CircusActionList;
import net.sourceforge.czt.circus.ast.CircusCommand;
import net.sourceforge.czt.circus.ast.CircusFieldList;
import net.sourceforge.czt.circus.ast.CircusProcess;
import net.sourceforge.czt.circus.ast.Communication;
import net.sourceforge.czt.circus.ast.DotField;
import net.sourceforge.czt.circus.ast.Field;
import net.sourceforge.czt.circus.ast.GuardedAction;
import net.sourceforge.czt.circus.ast.IfGuardedCommand;
import net.sourceforge.czt.circus.ast.ParamAction;
import net.sourceforge.czt.circus.ast.PrefixingAction;
import net.sourceforge.czt.circus.ast.VarDeclCommand;
import net.sourceforge.czt.circus.util.Factory;
import net.sourceforge.czt.z.ast.AndPred;
import net.sourceforge.czt.z.ast.ApplExpr;
import net.sourceforge.czt.z.ast.ConstDecl;
import net.sourceforge.czt.z.ast.Decl;
import net.sourceforge.czt.z.ast.Expr;
import net.sourceforge.czt.z.ast.FalsePred;
import net.sourceforge.czt.z.ast.MemPred;
import net.sourceforge.czt.z.ast.NegPred;
import net.sourceforge.czt.z.ast.NumExpr;
import net.sourceforge.czt.z.ast.OrPred;
import net.sourceforge.czt.z.ast.Pred;
import net.sourceforge.czt.z.ast.ProdExpr;
import net.sourceforge.czt.z.ast.RefExpr;
import net.sourceforge.czt.z.ast.SetExpr;
import net.sourceforge.czt.z.ast.Spec;
import net.sourceforge.czt.z.ast.TruePred;
import net.sourceforge.czt.z.ast.TupleExpr;
import net.sourceforge.czt.z.ast.VarDecl;
import net.sourceforge.czt.z.ast.ZDeclList;
import net.sourceforge.czt.z.ast.ZExprList;
import net.sourceforge.czt.z.ast.ZNameList;
public class ExprUtil {
public static int sizeOfExpression (Expr expr) {
if (expr instanceof RefExpr) {
String name = ((RefExpr)expr).getZName().toString();
if (name.equals ("$$SYNCH")) {
return 0;
}
return 1;
}
else if (expr instanceof ProdExpr) {
ZExprList exprlist = ((ProdExpr)expr).getZExprList();
return exprlist.size();
}
else {
ExceptionUtil.throwImplementationException ("ExprUtil.sizeOfExpression", expr.getClass());
return 0;
}
}
public static ZExprList fromVectorToRefExpr (Vector <String> names) {
Factory f = new Factory ();
ZExprList returnexprs = f.createZExprList();
int size = names.size();
for (int i = 0; i < size; i++) {
returnexprs.add(f.createRefExpr(f.createZName(names.elementAt(i))));
}
return returnexprs;
}
public static boolean exprContainsName (Expr expr, String name) {
if (expr instanceof RefExpr) {
String exprname = ((RefExpr)expr).getZName().toString();
if (exprname.equals(name)) {
return true;
}
else {
return false;
}
}
else if (expr instanceof NumExpr) {
return false; //Isto ocorre porque o nome do parâmetro não pode ser igual a uma expressão numérica
}
else if (expr instanceof TupleExpr) {
boolean aux = false;
ZExprList tupleexprs = ((TupleExpr)expr).getZExprList();
int size = tupleexprs.size();
for (int i = 0; i < size; i++) {
aux = aux || exprContainsName (tupleexprs.get(i), name);
}
return aux;
}
else if (expr instanceof SetExpr) {
boolean aux = false;
ZExprList exprlist = ((SetExpr)expr).getZExprList();
int size = exprlist.size();
for (int i = 0; i < size; i++) {
Expr expri = exprlist.get(i);
aux = aux || exprContainsName (expri, name);
}
return aux;
}
else if (expr instanceof ApplExpr) {
return exprContainsName (((ApplExpr)expr).getRightExpr(), name);
}
else /*if (expr instanceof ApplExpr)*/ {
ExceptionUtil.throwException("ExprUtil" + ".exprContainsName :: " + "this method does not have a implementation for " + expr.getClass() + ". Why not implementing it now? ;)");
return false;
}
}
public static Expr updateExpr (String namevar, Expr newExpr, Expr targetExpr) {
/**
* Atualiza o valor de uma variável em uma expressão.
* Verifica se uma expressão-alvo (targetExpr) possui uma dada variável (namevar), e se a expressão-alvo tiver a variável,
* Substitui a chamada da variável na expressão-alvo pela nova expressão (newExpr).
* Por exemplo, supomos que temos a expressão x + y e queremos substituir x por 5.
* Neste caso, x + y é a expressão-alvo (targetExpr),
* x é a variável que queremos que seja substituída (namevar),
* e 5 é a nova expressão (newExpr). Neste caso, updateExpr retornará x + 5
*/
Factory f = new Factory ();
FactoryUtil fu = new FactoryUtil ();
if (targetExpr instanceof RefExpr) {
String nametargetexpr = ((RefExpr)targetExpr).getName().toString();
Expr returnnewexpr = fu.createExpr (newExpr);
Expr returntargetexpr = fu.createExpr (targetExpr);
if (namevar.equals(nametargetexpr)) {
return returnnewexpr;
}
else {
return returntargetexpr;
}
}
else if (targetExpr instanceof ApplExpr) {
ApplExpr appl = (ApplExpr) fu.createExpr ((ApplExpr)targetExpr);
appl.setRightExpr(updateExpr (namevar, newExpr, ((ApplExpr) targetExpr).getRightExpr()));
return appl;
}
else if (targetExpr instanceof TupleExpr) {
ZExprList exprList = fu.createZExprList (((TupleExpr)targetExpr).getZExprList());
for (int i = 0; i < exprList.size(); i++) {
exprList.set(i, updateExpr (namevar, newExpr, exprList.get(i)));
}
TupleExpr tupleexpr = f.createTupleExpr();
tupleexpr.setExprList(exprList);
return tupleexpr;
}
else if (targetExpr instanceof NumExpr) {
/**
* Uma variável nunca pode ser encontrada numa NumExpr...
* */
return fu.createExpr (targetExpr);
}
//else if () {} //OUTROS TIPOS DE EXPRESSÃO?
else {
ExceptionUtil.throwImplementationException ("ExprUtil.updateExpr", targetExpr.getClass());
return fu.createExpr (targetExpr);
}
}
public static Expr updateExpr (List <VarDecl> decls, ZExprList newExprs, Expr targetExpr) {
Factory f = new Factory ();
int size1 = decls.size();
Expr oldexprAux = f.createRefExpr();
for (int i = 0; i < size1; i++) {
oldexprAux = ExprUtil.updateExpr (decls.get(i).getName().toString(), newExprs.get(i), targetExpr);
}
return oldexprAux;
}
protected static boolean areTheSameExpr (Expr expr1, Expr expr2) {
if (expr1 instanceof RefExpr && expr2 instanceof RefExpr) {
String name1 = ((RefExpr)expr1).getZName().toString();
String name2 = ((RefExpr)expr2).getZName().toString();
if (name1.equals(name2)) {
return true;
}
else {
return false;
}
}
else {
return false;
}
}
public static CircusAction updateExpression (List <VarDecl> decls, ZExprList paramExprs, CircusAction action, CircusProcess process, Spec spec) {
CircusAction action2;
action2 = ExprUtil.actionWithUpdatedExpression (decls, paramExprs, action, process, spec);
return action2;
}
/*public static CircusAction actionWithUpdatedExpression (ZDeclList decls, CircusAction action) {
Factory f = new Factory ();
ZExprList refexprlist = f.createZExprList();
int size = decls.size();
int counter = 0;
for (int i = 0; i < size; i++) {
Decl decl = decls.get(i);
if (decl instanceof VarDecl) {
VarDecl vardecl = (VarDecl)decl;
ZNameList names = vardecl.getZNameList();
int namessize = names.size();
for (int j = 0; j < namessize; j++) {
refexprlist.add(f.createRefExpr(f.createZName(names.get(j).toString())));
}
}
}
return actionWithUpdatedExpression (decls, refexprlist, action);
}*/
public static Vector <String> pActname2Vector (int n, String actionname) {
Vector <String> names = new Vector <String> ();
for (int i = 0; i < n; i++) {
names.addElement ("p" + actionname + i);
}
return names;
}
public static ZExprList pActname2ExprList (int n, String actionname) {
Vector <String> names = pActname2Vector (n, actionname);
return fromVectorToRefExpr (names);
}
//actionWithUpdatedExpression (ZDeclList decls, ZExprList paramExprs, CircusAction action)
//actionWithUpdatedExpression (decls2beupdated, pActname2ExprList (decls2beupdated.size(), ((CallAction)action).getName().toString()), updatedContent);
public static CircusAction actionWithUpdatedExpression (List <VarDecl> decls, ZExprList paramExprs, CircusAction action, CircusProcess process, Spec spec) {
return actionWithUpdatedExpression (decls, paramExprs, action, process, spec, new Vector <String> (), new Vector <String> (), new Consumer (new Vector <String> ()));
}
public static CircusAction actionWithUpdatedExpression (ZDeclList decls, ZExprList paramExprs, CircusAction action, CircusProcess process, Spec spec, Vector <String> mus, Vector <String> actionNames, Consumer c) {
List <VarDecl> listdecls = new ArrayList <VarDecl> ();
int size = decls.size();
for (int i = 0; i < size; i++) {
Decl decl = decls.get(i);
if (decl instanceof VarDecl)
listdecls.add((VarDecl)decl);
}
return actionWithUpdatedExpression (listdecls, paramExprs, action, process, spec, mus, actionNames, c);
}
public static Pred predWithUpdatedExpressions (List <VarDecl> decls, ZExprList paramExprs, Pred pred, CircusProcess process, Spec spec, Vector <String> mus, Vector <String> actionNames, Consumer c) {
Factory f = new Factory ();
FactoryUtil fu = new FactoryUtil ();
if (pred instanceof NegPred) {
NegPred negpred = f.createNegPred ();
negpred.setPred(predWithUpdatedExpressions (decls, paramExprs, ((NegPred) pred).getPred(), process, spec, mus, actionNames, c));
negpred.getAnns().addAll(pred.getAnns());
return negpred;
}
else if (pred instanceof TruePred) {
return f.createTruePred();
}
else if (pred instanceof FalsePred) {
return f.createFalsePred ();
}
else if (pred instanceof AndPred) {
AndPred andpred = f.createAndPred();
andpred.setAnd(((AndPred) pred).getAnd());
andpred.setLeftPred(fu.createPred(((AndPred) pred).getLeftPred()));
andpred.setRightPred(fu.createPred(((AndPred) pred).getRightPred()));
return andpred;
}
else if (pred instanceof OrPred) {
OrPred orpred = f.createOrPred();
orpred.setLeftPred(fu.createPred(((OrPred) pred).getLeftPred()));
orpred.setRightPred(fu.createPred(((OrPred) pred).getRightPred()));
return orpred;
}
else if (pred instanceof MemPred) {
MemPred mempred = f.createMemPred();
mempred.setMixfix(((MemPred) pred).getMixfix());
Expr leftexpr = ((MemPred) pred).getLeftExpr();
Expr rightexpr = ((MemPred) pred).getRightExpr();
Expr newleftexpr = fu.createExpr(leftexpr);
Expr newrightexpr = fu.createExpr (rightexpr);
Vector <String> vectordecls = DeclUtil.declListAsVector(DeclUtil.listVarDeclAsDeclList (decls));
int size = vectordecls.size();
for (int i = 0; i < size; i++) {
Expr currentexpr = paramExprs.get(i);
if (exprContainsName (leftexpr, vectordecls.elementAt(i))) {
newleftexpr = fu.createExpr(updateExpr (vectordecls.elementAt(i), paramExprs.get(i), leftexpr));
}
if (exprContainsName (rightexpr, vectordecls.elementAt(i))) {
newrightexpr = fu.createExpr(updateExpr (vectordecls.elementAt(i), paramExprs.get(i), rightexpr));
}
}
System.out.println ("Old left: " + PrinterUtil.printExpression(leftexpr));
System.out.println ("Old right: " + PrinterUtil.printExpression(rightexpr));
System.out.println ("New left: " + PrinterUtil.printExpression(newleftexpr));
System.out.println ("New right: " + PrinterUtil.printExpression(newrightexpr));
mempred.setLeftExpr (newleftexpr);
mempred.setRightExpr (newrightexpr);
return mempred;
}
else {
ExceptionUtil.throwImplementationException ("ExprUtil.predWithUpdatedExpression", pred.getClass());
return f.createTruePred();
}
}
public static CircusAction actionWithUpdatedExpression (List <VarDecl> decls, ZExprList paramExprs, CircusAction action, CircusProcess process, Spec spec, Vector <String> mus, Vector <String> actionNames, Consumer c) {
Factory f = new Factory ();
FactoryUtil fu = new FactoryUtil ();
CircusAction auxaction = ParamUtil.pf.createCircusAction (action);
if (auxaction instanceof ParamAction) {
CircusAction action2 = ((ParamAction)auxaction).getCircusAction();
ParamAction returnaction = f.createParamAction();
returnaction.setDeclList(((ParamAction) auxaction).getZDeclList());
returnaction.setCircusAction(actionWithUpdatedExpression (decls, paramExprs, action2, process, spec, mus, actionNames, c));
return returnaction;
}
else if (auxaction instanceof CircusCommand) {
if (auxaction instanceof AssignmentCommand) {
AssignmentPairs assPairs = (new Factory ()).createAssignmentPairs(((AssignmentCommand)auxaction).getAssignmentPairs().getLHS(), ((AssignmentCommand)auxaction).getAssignmentPairs().getRHS());
ZExprList exprList = assPairs.getZRHS();
ZExprList finalExprList = (new Factory ()).createZExprList();
int counter = 0;
for (int i = 0; i < exprList.size(); i++) {
Decl decl = decls.get(i);
if (decl instanceof VarDecl) {
ZNameList namelist = ((VarDecl)decl).getZNameList();
for (int j = 0; j < namelist.size(); j++) {
if (exprContainsName (exprList.get(i), namelist.get(j).toString())) {
System.out.println (PrinterUtil.printExpression (exprList.get(i)));
finalExprList.add(updateExpr (namelist.get(j).toString(), paramExprs.get(counter), exprList.get(i)));
System.out.println (PrinterUtil.printExpression (exprList.get (i)));
System.out.println (PrinterUtil.printExpression (finalExprList.get(counter)));
System.out.print ("");
}
else {
finalExprList.add(exprList.get(j));
}
counter++;
}
}
/*if (exprContainsName (exprList.get(i), decls.get(i).getName().toString())) {
finalExprList.add(updateExpr (decls.get(i).getName().toString(), paramExprs.get(i), exprList.get(i)));
}
else {
finalExprList.add(exprList.get(i));
}*/
}
assPairs.setRHS(finalExprList/*exprList*/);
((AssignmentCommand)auxaction).setAssignmentPairs(assPairs);
return auxaction;
}
else if (auxaction instanceof IfGuardedCommand) {
int size = ((IfGuardedCommand)auxaction).getNumberOfGuards();
CircusActionList al = ((IfGuardedCommand)auxaction).getGuardedActionList();
for (int i = 0; i < size; i++) {
CircusAction act = al.get(i);
act = actionWithUpdatedExpression (decls, paramExprs, al.get(i), process, spec, mus, actionNames, c);
al.set(i, act);
}
((IfGuardedCommand)auxaction).setActionList(al);
System.out.print ("");
return auxaction;
}
else if (auxaction instanceof VarDeclCommand) {
VarDeclCommand vdc = f.createVarDeclCommand();
vdc.setDeclList(((VarDeclCommand)auxaction).getZDeclList());
vdc.setCircusAction(actionWithUpdatedExpression (decls, paramExprs, ((VarDeclCommand)auxaction).getCircusAction(), process, spec, mus, actionNames, c));
return vdc;
}
else {
ExceptionUtil.throwImplementationException("actionWithUpdatedExpression", auxaction.getClass());
return auxaction;
}
//return auxaction;
}
else if (auxaction instanceof Action2) {
Action2 action2 = (Action2)auxaction;
action2.setLeftAction(actionWithUpdatedExpression (decls, paramExprs, action2.getLeftAction(), process, spec, mus, actionNames, c));
action2.setRightAction (actionWithUpdatedExpression (decls, paramExprs, action2.getRightAction(), process, spec, mus, actionNames, c));
return action2;
}
else if (auxaction instanceof PrefixingAction) {
Communication comm = ((PrefixingAction)auxaction).getCommunication();
CircusFieldList cfl = comm.getCircusFieldList();
int size = cfl.size();
int counter = 0;
for (int i = 0; i < size; i++) {
Field field = cfl.get(i);
if (field instanceof DotField) {
DotField dotfield = (DotField)field;
Expr target = dotfield.getExpr();
int declssize = decls.size();
for (int j = 0; j < declssize; j++) {
int namelistsize = 0;
if (decls.get(j) instanceof VarDecl) {
namelistsize = ((VarDecl)decls.get(j)).getZNameList().size();
ZNameList namelist = ((VarDecl)decls.get(j)).getZNameList();
for (int k = 0; k < namelistsize; k++) {
boolean exprContainsName = exprContainsName (target, ((VarDecl)decls.get(j)).getZNameList().get(k).toString());
if (exprContainsName (target, ((VarDecl)decls.get(j)).getZNameList().get(k).toString())) {
dotfield.setExpr(updateExpr (namelist.get(k).toString(), paramExprs.get(counter), target));
counter++;
}
}
}
else if (decls.get(j) instanceof ConstDecl) {
namelistsize = 1;
if (exprContainsName (target, ((ConstDecl)decls.get(j)).getZName().toString())) {
dotfield.setExpr(updateExpr (((ConstDecl)decls.get(j)).getZName().toString(), paramExprs.get(counter), target));
counter++;
}
}
else {
ExceptionUtil.throwImplementationException("actionWithUpdatedExpression", decls.get(j).getClass());
}
/*
for (int k = 0; k < namelistsize; k++) {
if (exprContainsName (target, decls.get(j).getName().toString())) {
dotfield.setExpr(updateExpr (decls.get(i).getName().toString(), paramExprs.get(i), target));
}
}
*/
}
field = dotfield;
}
cfl.set(i, field);
}
comm.setFieldList(cfl);
((PrefixingAction)auxaction).setCommunication(comm);
((PrefixingAction)auxaction).setCircusAction(actionWithUpdatedExpression (decls, paramExprs, ((PrefixingAction) auxaction).getCircusAction(), process, spec, mus, actionNames, c));
return auxaction;
}
if (auxaction instanceof GuardedAction) {
Pred pred = ((GuardedAction)auxaction).getPred();
Pred updatedpred = predWithUpdatedExpressions (decls, paramExprs, pred, process, spec, mus, actionNames, c);
Pred newpred = fu.createPred (updatedpred);
GuardedAction ga = f.createGuardedAction();
ga.setPred(newpred);
ga.setCircusAction(actionWithUpdatedExpression (decls, paramExprs, ((GuardedAction)auxaction).getCircusAction(), process, spec, mus, actionNames, c));
return ga;
}
else if (auxaction instanceof Action1) {
Action1 action1 = (Action1)auxaction;
action1.setCircusAction(actionWithUpdatedExpression (decls, paramExprs, action1.getCircusAction(), process, spec, mus, actionNames, c));
return action1;
}
else if (auxaction instanceof CallAction) {
if (auxaction.getAnn(MuCallAnn.class) == null) {
ZExprList callexprs = ((CallAction)auxaction).getZExprList();
CircusAction auxcontentaction =
fu.createCircusAction (CallUtil.getContentOfCallAction((CallAction)auxaction, process, spec));
if (callexprs.size() > 0 && auxcontentaction != null) {
ZDeclList auxcontentdecls = ((ParamAction)auxcontentaction).getZDeclList();
ZExprList newlist = f.createZExprList ();
Vector <String> commondecls = DeclUtil.commonDecls (DeclUtil.listVarDeclAsDeclList (decls), auxcontentdecls);
Vector <String> auxcontentdeclsvector = DeclUtil.declListAsVector(auxcontentdecls);
int size = auxcontentdeclsvector.size();
int counter = 0;
for (int i = 0; i < size; i++) {
if (commondecls.contains(auxcontentdeclsvector.get(i))) {
Expr expr = updateExpr (auxcontentdeclsvector.get(i), paramExprs.get(i), callexprs.get(i));
newlist.add(fu.createExpr(expr));
counter++;
}
else {
newlist.add(fu.createExpr(callexprs.get(i)));
}
}
CallAction ca = f.createCallAction ();
ca.setName(((CallAction)auxaction).getZName());
ca.setExprList(newlist);
return ca;
}
}
return auxaction;
}
else if (auxaction instanceof BasicAction) {
return auxaction;
}
else {
ExceptionUtil.throwImplementationException("ExprUtil.actionWithUpdatedExpression", auxaction.getClass());
return auxaction;
}
}
/***USADO EM CCUPDATER***/
public static void replaceVarName (String targetVar, String newName, Expr expr) {
replaceVarName (targetVar, newName, expr, "");
}
public static void replaceVarName (String targetVar, String newName, Expr expr, String processname) {
Factory f = new Factory ();
if (expr instanceof RefExpr) {
String exprName = ((RefExpr)expr).getName().toString();
if (exprName.equals(targetVar)) {
((RefExpr)expr).setName(f.createZName(newName));
}
}
else if (expr instanceof ApplExpr) {
Expr left = ((ApplExpr)expr).getLeftExpr();
Expr right = ((ApplExpr)expr).getRightExpr();
replaceVarName (targetVar, newName, left, processname);
replaceVarName (targetVar, newName, right, processname);
}
else if (expr instanceof TupleExpr) {
ZExprList exprlist = ((TupleExpr)expr).getZExprList();
int size = exprlist.size();
for (int i = 0; i < size; i++) {
replaceVarName (targetVar, newName, exprlist.get(i), processname);
}
}
else if (expr instanceof NumExpr) {
//Nothing to do
}
else {
ExceptionUtil.throwImplementationException("ExprUtil.replaceVarName", expr.getClass());
}
}
}
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