import java.util.Hashtable;
import java.util.Iterator;
import java.util.List;
-import java.util.Map;
import java.util.Set;
import java.util.StringTokenizer;
import java.util.Vector;
import IR.Tree.SubBlockNode;
import IR.Tree.TertiaryNode;
import IR.Tree.TreeNode;
-import Util.Lattice;
import Util.Pair;
public class FlowDownCheck {
static SSJavaAnalysis ssjava;
HashSet toanalyze;
- Hashtable<Descriptor, Location> d2loc; // mapping from 'descriptor'
- // to 'location'
- Hashtable<String, ClassDescriptor> id2cd; // mapping from 'locID' to 'class
+
+ // mapping from 'descriptor' to 'composite location'
+ Hashtable<Descriptor, CompositeLocation> d2loc;
+
+ // mapping from 'locID' to 'class descriptor'
+ Hashtable<String, ClassDescriptor> fieldLocName2cd;
public FlowDownCheck(SSJavaAnalysis ssjava, State state) {
this.ssjava = ssjava;
this.state = state;
this.toanalyze = new HashSet();
- this.d2loc = new Hashtable<Descriptor, Location>();
- // init();
+ this.d2loc = new Hashtable<Descriptor, CompositeLocation>();
+ this.fieldLocName2cd = new Hashtable<String, ClassDescriptor>();
+ init();
}
- // public void init() {
- // id2cd = new Hashtable<String, ClassDescriptor>();
- // Hashtable cd2lattice = state.getCd2LocationOrder();
- //
- // Set cdSet = cd2lattice.keySet();
- // for (Iterator iterator = cdSet.iterator(); iterator.hasNext();) {
- // ClassDescriptor cd = (ClassDescriptor) iterator.next();
- // Lattice<String> lattice = (Lattice<String>) cd2lattice.get(cd);
- //
- // Set<String> locIdSet = lattice.getKeySet();
- // for (Iterator iterator2 = locIdSet.iterator(); iterator2.hasNext();) {
- // String locID = (String) iterator2.next();
- // id2cd.put(locID, cd);
- // }
- // }
- //
- // }
+ public void init() {
+
+ // construct mapping from the location name to the class descriptor
+ // assume that the location name is unique through the whole program
+
+ Set<ClassDescriptor> cdSet = ssjava.getCd2lattice().keySet();
+ for (Iterator iterator = cdSet.iterator(); iterator.hasNext();) {
+ ClassDescriptor cd = (ClassDescriptor) iterator.next();
+ SSJavaLattice<String> lattice = ssjava.getCd2lattice().get(cd);
+ Set<String> fieldLocNameSet = lattice.getKeySet();
+
+ for (Iterator iterator2 = fieldLocNameSet.iterator(); iterator2.hasNext();) {
+ String fieldLocName = (String) iterator2.next();
+ fieldLocName2cd.put(fieldLocName, cd);
+ }
+
+ }
+
+ }
public void flowDownCheck() {
SymbolTable classtable = state.getClassSymbolTable();
}
- // post-processing for delta location
- // for a nested delta location, assigning a concrete reference to delta
- // operand
- Set<Descriptor> tdSet = d2loc.keySet();
- for (Iterator iterator = tdSet.iterator(); iterator.hasNext();) {
- Descriptor td = (Descriptor) iterator.next();
- Location loc = d2loc.get(td);
-
- if (loc.getType() == Location.DELTA) {
- // if it contains delta reference pointing to another location element
- CompositeLocation compLoc = (CompositeLocation) loc;
-
- Location locElement = compLoc.getTuple().at(0);
- assert (locElement instanceof DeltaLocation);
-
- DeltaLocation delta = (DeltaLocation) locElement;
- Descriptor refType = delta.getRefLocationId();
- if (refType != null) {
- Location refLoc = d2loc.get(refType);
-
- assert (refLoc instanceof CompositeLocation);
- CompositeLocation refCompLoc = (CompositeLocation) refLoc;
-
- assert (refCompLoc.getTuple().at(0) instanceof DeltaLocation);
- DeltaLocation refDelta = (DeltaLocation) refCompLoc.getTuple().at(0);
-
- delta.addDeltaOperand(refDelta);
- // compLoc.addLocation(refDelta);
- }
-
- }
- }
+ // // post-processing for delta location
+ // // for a nested delta location, assigning a concrete reference to delta
+ // // operand
+ // Set<Descriptor> tdSet = d2loc.keySet();
+ // for (Iterator iterator = tdSet.iterator(); iterator.hasNext();) {
+ // Descriptor td = (Descriptor) iterator.next();
+ // Location loc = d2loc.get(td);
+ //
+ // if (loc.getType() == Location.DELTA) {
+ // // if it contains delta reference pointing to another location element
+ // CompositeLocation compLoc = (CompositeLocation) loc;
+ //
+ // Location locElement = compLoc.getTuple().at(0);
+ // assert (locElement instanceof DeltaLocation);
+ //
+ // DeltaLocation delta = (DeltaLocation) locElement;
+ // Descriptor refType = delta.getRefLocationId();
+ // if (refType != null) {
+ // Location refLoc = d2loc.get(refType);
+ //
+ // assert (refLoc instanceof CompositeLocation);
+ // CompositeLocation refCompLoc = (CompositeLocation) refLoc;
+ //
+ // assert (refCompLoc.getTuple().at(0) instanceof DeltaLocation);
+ // DeltaLocation refDelta = (DeltaLocation) refCompLoc.getTuple().at(0);
+ //
+ // delta.addDeltaOperand(refDelta);
+ // // compLoc.addLocation(refDelta);
+ // }
+ //
+ // }
+ // }
// phase2 : checking assignments
toanalyze.addAll(classtable.getValueSet());
for (int i = 0; i < bn.size(); i++) {
BlockStatementNode bsn = bn.get(i);
CompositeLocation bLoc = checkLocationFromBlockStatementNode(md, bn.getVarTable(), bsn);
-
if (lowestLoc == null) {
lowestLoc = bLoc;
} else {
- if (CompositeLattice.isGreaterThan(lowestLoc, bLoc, md.getClassDesc())) {
- lowestLoc = bLoc;
+ if (!bLoc.isEmpty()) {
+ if (CompositeLattice.isGreaterThan(lowestLoc, bLoc)) {
+ lowestLoc = bLoc;
+ }
}
}
}
private CompositeLocation checkLocationFromReturnNode(MethodDescriptor md, SymbolTable nametable,
ReturnNode rn) {
ClassDescriptor cd = md.getClassDesc();
- CompositeLocation loc = new CompositeLocation(cd);
+ CompositeLocation loc = new CompositeLocation();
ExpressionNode returnExp = rn.getReturnExpression();
if (rn == null || hasOnlyLiteralValue(returnExp)) {
// when it returns literal value, return node has "bottom" location no
// matter what it is going to return.
- loc.addLocation(Location.createBottomLocation(cd));
+ loc.addLocation(Location.createBottomLocation(md));
} else {
loc = checkLocationFromExpressionNode(md, nametable, returnExp, loc);
}
if (ln.getType() == LoopNode.WHILELOOP || ln.getType() == LoopNode.DOWHILELOOP) {
CompositeLocation condLoc =
- checkLocationFromExpressionNode(md, nametable, ln.getCondition(), new CompositeLocation(
- cd));
+ checkLocationFromExpressionNode(md, nametable, ln.getCondition(), new CompositeLocation());
addTypeLocation(ln.getCondition().getType(), (condLoc));
CompositeLocation bodyLoc = checkLocationFromBlockNode(md, nametable, ln.getBody());
- if (!CompositeLattice.isGreaterThan(condLoc, bodyLoc, cd)) {
+ if (!CompositeLattice.isGreaterThan(condLoc, bodyLoc)) {
// loop condition should be higher than loop body
throw new Error(
"The location of the while-condition statement is lower than the loop body at "
// calculate glb location of condition and update statements
CompositeLocation condLoc =
checkLocationFromExpressionNode(md, bn.getVarTable(), ln.getCondition(),
- new CompositeLocation(cd));
+ new CompositeLocation());
addTypeLocation(ln.getCondition().getType(), condLoc);
CompositeLocation updateLoc =
glbInputSet.add(condLoc);
glbInputSet.add(updateLoc);
- CompositeLocation glbLocOfForLoopCond = CompositeLattice.calculateGLB(cd, glbInputSet, cd);
+ CompositeLocation glbLocOfForLoopCond = CompositeLattice.calculateGLB(glbInputSet);
// check location of 'forloop' body
CompositeLocation blockLoc = checkLocationFromBlockNode(md, bn.getVarTable(), ln.getBody());
return glbLocOfForLoopCond;
}
- if (!CompositeLattice.isGreaterThan(glbLocOfForLoopCond, blockLoc, cd)) {
+ if (!CompositeLattice.isGreaterThan(glbLocOfForLoopCond, blockLoc)) {
throw new Error(
"The location of the for-condition statement is lower than the for-loop body at "
+ cd.getSourceFileName() + ":" + ln.getCondition().getNumLine());
Set<CompositeLocation> glbInputSet = new HashSet<CompositeLocation>();
CompositeLocation condLoc =
- checkLocationFromExpressionNode(md, nametable, isn.getCondition(), new CompositeLocation(
- localCD));
+ checkLocationFromExpressionNode(md, nametable, isn.getCondition(), new CompositeLocation());
+
addTypeLocation(isn.getCondition().getType(), condLoc);
glbInputSet.add(condLoc);
// here, the location of conditional block should be higher than the
// location of true/false blocks
- if (!CompositeLattice.isGreaterThan(condLoc, locTrueBlock, localCD)) {
+ if (!CompositeLattice.isGreaterThan(condLoc, locTrueBlock)) {
// error
throw new Error(
"The location of the if-condition statement is lower than the conditional block at "
checkLocationFromBlockNode(md, nametable, isn.getFalseBlock());
glbInputSet.add(locFalseBlock);
- if (!CompositeLattice.isGreaterThan(condLoc, locFalseBlock, localCD)) {
+ if (!CompositeLattice.isGreaterThan(condLoc, locFalseBlock)) {
// error
throw new Error(
"The location of the if-condition statement is lower than the conditional block at "
}
// return GLB location of condition, true, and false block
- CompositeLocation glbLoc = CompositeLattice.calculateGLB(localCD, glbInputSet, localCD);
+ CompositeLocation glbLoc = CompositeLattice.calculateGLB(glbInputSet);
return glbLoc;
}
private CompositeLocation checkLocationFromDeclarationNode(MethodDescriptor md,
SymbolTable nametable, DeclarationNode dn) {
+
VarDescriptor vd = dn.getVarDescriptor();
- Location destLoc = d2loc.get(vd);
+ CompositeLocation destLoc = d2loc.get(vd);
ClassDescriptor localCD = md.getClassDesc();
if (dn.getExpression() != null) {
CompositeLocation expressionLoc =
- checkLocationFromExpressionNode(md, nametable, dn.getExpression(), new CompositeLocation(
- localCD));
+ checkLocationFromExpressionNode(md, nametable, dn.getExpression(),
+ new CompositeLocation());
addTypeLocation(dn.getExpression().getType(), expressionLoc);
if (expressionLoc != null) {
// checking location order
- if (!CompositeLattice.isGreaterThan(expressionLoc, destLoc, localCD)) {
+ if (!CompositeLattice.isGreaterThan(expressionLoc, destLoc)) {
throw new Error("The value flow from " + expressionLoc + " to " + destLoc
+ " does not respect location hierarchy on the assignment " + dn.printNode(0)
+ " at " + md.getClassDesc().getSourceFileName() + "::" + dn.getNumLine());
} else {
- if (destLoc instanceof Location) {
- CompositeLocation comp = new CompositeLocation(localCD);
- comp.addLocation(destLoc);
- return comp;
- } else {
- return (CompositeLocation) destLoc;
- }
+ // if (destLoc instanceof Location) {
+ // CompositeLocation comp = new CompositeLocation();
+ // comp.addLocation(destLoc);
+ // return comp;
+ // } else {
+ // return (CompositeLocation) destLoc;
+ // }
+ return destLoc;
}
SymbolTable nametable, BlockExpressionNode ben) {
CompositeLocation compLoc =
checkLocationFromExpressionNode(md, nametable, ben.getExpression(), null);
- addTypeLocation(ben.getExpression().getType(), compLoc);
+ // addTypeLocation(ben.getExpression().getType(), compLoc);
return compLoc;
}
return null;
}
-
- addTypeLocation(en.getType(), compLoc);
+ // addTypeLocation(en.getType(), compLoc);
return compLoc;
}
CastNode cn) {
ExpressionNode en = cn.getExpression();
- return checkLocationFromExpressionNode(md, nametable, en,
- new CompositeLocation(md.getClassDesc()));
+ return checkLocationFromExpressionNode(md, nametable, en, new CompositeLocation());
}
ClassDescriptor cd = md.getClassDesc();
CompositeLocation condLoc =
- checkLocationFromExpressionNode(md, nametable, tn.getCond(), new CompositeLocation(cd));
+ checkLocationFromExpressionNode(md, nametable, tn.getCond(), new CompositeLocation());
addTypeLocation(tn.getCond().getType(), condLoc);
CompositeLocation trueLoc =
- checkLocationFromExpressionNode(md, nametable, tn.getTrueExpr(), new CompositeLocation(cd));
+ checkLocationFromExpressionNode(md, nametable, tn.getTrueExpr(), new CompositeLocation());
addTypeLocation(tn.getTrueExpr().getType(), trueLoc);
CompositeLocation falseLoc =
- checkLocationFromExpressionNode(md, nametable, tn.getFalseExpr(), new CompositeLocation(cd));
+ checkLocationFromExpressionNode(md, nametable, tn.getFalseExpr(), new CompositeLocation());
addTypeLocation(tn.getFalseExpr().getType(), falseLoc);
// check if condLoc is higher than trueLoc & falseLoc
- if (!CompositeLattice.isGreaterThan(condLoc, trueLoc, cd)) {
+ if (!CompositeLattice.isGreaterThan(condLoc, trueLoc)) {
throw new Error(
"The location of the condition expression is lower than the true expression at "
+ cd.getSourceFileName() + ":" + tn.getCond().getNumLine());
}
- if (!CompositeLattice.isGreaterThan(condLoc, falseLoc, cd)) {
+ if (!CompositeLattice.isGreaterThan(condLoc, falseLoc)) {
throw new Error(
"The location of the condition expression is lower than the true expression at "
+ cd.getSourceFileName() + ":" + tn.getCond().getNumLine());
glbInputSet.add(trueLoc);
glbInputSet.add(falseLoc);
- return CompositeLattice.calculateGLB(cd, glbInputSet, cd);
- }
-
- private CompositeLocation convertCompositeLocation(Location l, ClassDescriptor c) {
- if (l instanceof CompositeLocation) {
- return (CompositeLocation) l;
- } else {
- CompositeLocation returnLoc = new CompositeLocation(c);
- returnLoc.addLocation(l);
- return returnLoc;
- }
+ return CompositeLattice.calculateGLB(glbInputSet);
}
private CompositeLocation checkLocationFromMethodInvokeNode(MethodDescriptor md,
SymbolTable nametable, MethodInvokeNode min) {
- ClassDescriptor cd = md.getClassDesc();
-
- CompositeLocation baseLoc = null;
- if (min.getBaseName() != null) {
- if (nametable.contains(min.getBaseName().getSymbol())) {
- Location loc = d2loc.get(nametable.get(min.getBaseName().getSymbol()));
- if (loc != null) {
- baseLoc = convertCompositeLocation(loc, cd);
- }
- }
- }
-
- Set<CompositeLocation> inputGLBSet = new HashSet<CompositeLocation>();
- for (int i = 0; i < min.numArgs(); i++) {
- ExpressionNode en = min.getArg(i);
- CompositeLocation callerArg =
- checkLocationFromExpressionNode(md, nametable, en, new CompositeLocation(cd));
- inputGLBSet.add(callerArg);
- }
-
- // ex) base.method(arg1,arg2,arg3) -> the location of base should be lower
- // than
- // GLB(arg1,arg2,arg3)
- CompositeLocation argGLBLoc = null;
- if (inputGLBSet.size() > 0) {
- argGLBLoc = CompositeLattice.calculateGLB(cd, inputGLBSet, cd);
- System.out.println("baseLoc=" + baseLoc + " argGLBLoc=" + argGLBLoc);
- if (baseLoc != null) {
- if (!CompositeLattice.isGreaterThan(argGLBLoc, baseLoc, cd)) {
- throw new Error("The base location of method invocation " + min.printNode(0)
- + " is higher than its argument's location at " + cd.getSourceFileName() + "::"
- + min.getNumLine());
- }
- }
- }
+ // Location baseLoc = null;
+ // if (min.getBaseName() != null) {
+ // Descriptor d = nametable.get(min.getBaseName().getSymbol());
+ // if (d instanceof VarDescriptor) {
+ // CompositeLocation varLoc = (CompositeLocation) ((VarDescriptor)
+ // d).getType().getExtension();
+ // return varLoc;
+ // } else {
+ // // it is field descriptor
+ // assert (d instanceof FieldDescriptor);
+ // CompositeLocation fieldLoc =
+ // (CompositeLocation) min.getExpression().getType().getExtension();
+ // return fieldLoc;
+ // }
+ // } else {
+ // // method invocation starting from this
+ // MethodLattice<String> methodLattice = ssjava.getMethodLattice(md);
+ // System.out.println("md=" + md + " lattice=" + methodLattice);
+ // String thisLocId = methodLattice.getThisLoc();
+ // baseLoc = new Location(md, thisLocId);
+ // }
+ // System.out.println("BASE LOC=" + baseLoc);
if (min.numArgs() > 1) {
-
// caller needs to guarantee that it passes arguments in regarding to
// callee's hierarchy
-
for (int i = 0; i < min.numArgs(); i++) {
ExpressionNode en = min.getArg(i);
CompositeLocation callerArg1 =
- checkLocationFromExpressionNode(md, nametable, en, new CompositeLocation(cd));
+ checkLocationFromExpressionNode(md, nametable, en, new CompositeLocation());
ClassDescriptor calleecd = min.getMethod().getClassDesc();
VarDescriptor calleevd = (VarDescriptor) min.getMethod().getParameter(i);
- Location calleeLoc1 = d2loc.get(calleevd);
+ CompositeLocation calleeLoc1 = d2loc.get(calleevd);
- if (!callerArg1.getLocation(cd).isTop()) {
+ if (!callerArg1.get(0).isTop()) {
// here, check if ordering relations among caller's args respect
// ordering relations in-between callee's args
for (int currentIdx = 0; currentIdx < min.numArgs(); currentIdx++) {
if (currentIdx != i) { // skip itself
ExpressionNode argExp = min.getArg(currentIdx);
+
CompositeLocation callerArg2 =
- checkLocationFromExpressionNode(md, nametable, argExp, new CompositeLocation(cd));
+ checkLocationFromExpressionNode(md, nametable, argExp, new CompositeLocation());
VarDescriptor calleevd2 = (VarDescriptor) min.getMethod().getParameter(currentIdx);
- Location calleeLoc2 = d2loc.get(calleevd2);
- boolean callerResult = CompositeLattice.isGreaterThan(callerArg1, callerArg2, cd);
- boolean calleeResult =
- CompositeLattice.isGreaterThan(calleeLoc1, calleeLoc2, calleecd);
+ CompositeLocation calleeLoc2 = d2loc.get(calleevd2);
+
+ boolean callerResult = CompositeLattice.isGreaterThan(callerArg1, callerArg2);
+ boolean calleeResult = CompositeLattice.isGreaterThan(calleeLoc1, calleeLoc2);
if (calleeResult && !callerResult) {
- // in callee, calleeLoc1 is higher than calleeLoc2
+ // If calleeLoc1 is higher than calleeLoc2
// then, caller should have same ordering relation in-bet
// callerLoc1 & callerLoc2
throw new Error("Caller doesn't respect ordering relations among method arguments:"
- + cd.getSourceFileName() + ":" + min.getNumLine());
+ + md.getClassDesc().getSourceFileName() + ":" + min.getNumLine());
}
}
// all arguments should be higher than the location of return value
+ Set<CompositeLocation> inputGLBSet = new HashSet<CompositeLocation>();
+ for (int i = 0; i < min.numArgs(); i++) {
+ ExpressionNode en = min.getArg(i);
+ CompositeLocation callerArg =
+ checkLocationFromExpressionNode(md, nametable, en, new CompositeLocation());
+ inputGLBSet.add(callerArg);
+ }
+
if (inputGLBSet.size() > 0) {
- if (baseLoc != null) {
- inputGLBSet.add(baseLoc);
- return CompositeLattice.calculateGLB(cd, inputGLBSet, cd);
- } else {
- return argGLBLoc;
- }
+ return CompositeLattice.calculateGLB(inputGLBSet);
} else {
// if there are no arguments,
- if (baseLoc != null) {
- return baseLoc;
- } else {
- // method invocation from the same class
- CompositeLocation returnLoc = new CompositeLocation(cd);
- returnLoc.addLocation(Location.createTopLocation(cd));
- return returnLoc;
- }
+ // method invocation from the same class
+ CompositeLocation compLoc = new CompositeLocation();
+ return compLoc;
}
+
}
private CompositeLocation checkLocationFromArrayAccessNode(MethodDescriptor md,
Set<CompositeLocation> glbInputSet = new HashSet<CompositeLocation>();
CompositeLocation arrayLoc =
- checkLocationFromExpressionNode(md, nametable, aan.getExpression(), new CompositeLocation(
- cd));
+ checkLocationFromExpressionNode(md, nametable, aan.getExpression(), new CompositeLocation());
addTypeLocation(aan.getExpression().getType(), arrayLoc);
glbInputSet.add(arrayLoc);
CompositeLocation indexLoc =
- checkLocationFromExpressionNode(md, nametable, aan.getIndex(), new CompositeLocation(cd));
+ checkLocationFromExpressionNode(md, nametable, aan.getIndex(), new CompositeLocation());
glbInputSet.add(indexLoc);
addTypeLocation(aan.getIndex().getType(), indexLoc);
- CompositeLocation glbLoc = CompositeLattice.calculateGLB(cd, glbInputSet, cd);
+ CompositeLocation glbLoc = CompositeLattice.calculateGLB(glbInputSet);
return glbLoc;
}
for (int i = 0; i < con.numArgs(); i++) {
ExpressionNode en = con.getArg(i);
CompositeLocation argLoc =
- checkLocationFromExpressionNode(md, nametable, en, new CompositeLocation(cd));
+ checkLocationFromExpressionNode(md, nametable, en, new CompositeLocation());
glbInputSet.add(argLoc);
addTypeLocation(en.getType(), argLoc);
}
// }
if (glbInputSet.size() > 0) {
- return CompositeLattice.calculateGLB(cd, glbInputSet, cd);
+ return CompositeLattice.calculateGLB(glbInputSet);
}
- CompositeLocation compLoc = new CompositeLocation(cd);
- compLoc.addLocation(Location.createTopLocation(cd));
+ CompositeLocation compLoc = new CompositeLocation();
+ compLoc.addLocation(Location.createTopLocation(md));
return compLoc;
}
OpNode on) {
ClassDescriptor cd = md.getClassDesc();
- CompositeLocation leftLoc = new CompositeLocation(cd);
+ CompositeLocation leftLoc = new CompositeLocation();
leftLoc = checkLocationFromExpressionNode(md, nametable, on.getLeft(), leftLoc);
- addTypeLocation(on.getLeft().getType(), leftLoc);
+ // addTypeLocation(on.getLeft().getType(), leftLoc);
- CompositeLocation rightLoc = new CompositeLocation(cd);
+ CompositeLocation rightLoc = new CompositeLocation();
if (on.getRight() != null) {
rightLoc = checkLocationFromExpressionNode(md, nametable, on.getRight(), rightLoc);
- addTypeLocation(on.getRight().getType(), rightLoc);
+ // addTypeLocation(on.getRight().getType(), rightLoc);
}
// System.out.println("checking op node=" + on.printNode(0));
// System.out.println("left loc=" + leftLoc + " from " +
// on.getLeft().getClass());
// System.out.println("right loc=" + rightLoc + " from " +
- // on.getLeft().getClass());
+ // on.getRight().getClass());
Operation op = on.getOp();
Set<CompositeLocation> inputSet = new HashSet<CompositeLocation>();
inputSet.add(leftLoc);
inputSet.add(rightLoc);
- CompositeLocation glbCompLoc = CompositeLattice.calculateGLB(cd, inputSet, cd);
+ CompositeLocation glbCompLoc = CompositeLattice.calculateGLB(inputSet);
return glbCompLoc;
default:
// literal value has the top location so that value can be flowed into any
// location
- Location literalLoc = Location.createTopLocation(md.getClassDesc());
+ Location literalLoc = Location.createTopLocation(md);
loc.addLocation(literalLoc);
return loc;
loc = checkLocationFromExpressionNode(md, nametable, nn.getExpression(), loc);
addTypeLocation(nn.getExpression().getType(), loc);
} else {
-
String varname = nd.toString();
+
if (varname.equals("this")) {
- // 'this' itself is top location in the local hierarchy
- loc.addLocation(Location.createTopLocation(md.getClassDesc()));
+ // 'this' itself!
+ MethodLattice<String> methodLattice = ssjava.getMethodLattice(md);
+ Location locElement = new Location(md, methodLattice.getThisLoc());
+ loc.addLocation(locElement);
return loc;
}
Descriptor d = (Descriptor) nametable.get(varname);
- Location localLoc = null;
+ // CompositeLocation localLoc = null;
if (d instanceof VarDescriptor) {
VarDescriptor vd = (VarDescriptor) d;
- localLoc = d2loc.get(vd);
+ // localLoc = d2loc.get(vd);
+ // the type of var descriptor has a composite location!
+ loc = (CompositeLocation) vd.getType().getExtension();
} else if (d instanceof FieldDescriptor) {
+ // the type of field descriptor has a location!
FieldDescriptor fd = (FieldDescriptor) d;
- localLoc = d2loc.get(fd);
- }
- assert (localLoc != null);
- if (localLoc instanceof CompositeLocation) {
- loc = (CompositeLocation) localLoc;
- } else {
- loc.addLocation(localLoc);
+ // the location of field access starts from this, followed by field
+ // location
+ MethodLattice<String> localLattice = ssjava.getMethodLattice(md);
+ Location thisLoc = new Location(md, localLattice.getThisLoc());
+ loc.addLocation(thisLoc);
+ Location fieldLoc = (Location) fd.getType().getExtension();
+ loc.addLocation(fieldLoc);
}
}
ExpressionNode left = fan.getExpression();
loc = checkLocationFromExpressionNode(md, nametable, left, loc);
- addTypeLocation(left.getType(), loc);
+ // addTypeLocation(left.getType(), loc);
if (!left.getType().isPrimitive()) {
FieldDescriptor fd = fan.getField();
- Location fieldLoc = d2loc.get(fd);
+ Location fieldLoc = (Location) fd.getType().getExtension();
+ // Location fieldLoc = d2loc.get(fd);
// in the case of "this.field", need to get rid of 'this' location from
// the composite location
- if (loc.getCd2Loc().containsKey(md.getClassDesc())) {
- loc.removieLocation(md.getClassDesc());
- }
+ // if (loc.getCd2Loc().containsKey(md.getClassDesc())) {
+ // loc.removieLocation(md.getClassDesc());
+ // }
loc.addLocation(fieldLoc);
}
private CompositeLocation checkLocationFromAssignmentNode(MethodDescriptor md,
SymbolTable nametable, AssignmentNode an, CompositeLocation loc) {
+
ClassDescriptor cd = md.getClassDesc();
boolean postinc = true;
postinc = false;
CompositeLocation destLocation =
- checkLocationFromExpressionNode(md, nametable, an.getDest(), new CompositeLocation(cd));
+ checkLocationFromExpressionNode(md, nametable, an.getDest(), new CompositeLocation());
- CompositeLocation srcLocation = new CompositeLocation(cd);
+ CompositeLocation srcLocation = new CompositeLocation();
if (!postinc) {
- srcLocation = new CompositeLocation(cd);
+ srcLocation = new CompositeLocation();
srcLocation = checkLocationFromExpressionNode(md, nametable, an.getSrc(), srcLocation);
- // System.out.println("an=" + an.printNode(0) + " an.getSrc()=" +
- // an.getSrc().getClass()
- // + " at " + cd.getSourceFileName() + "::" + an.getNumLine());
- if (!CompositeLattice.isGreaterThan(srcLocation, destLocation, cd)) {
+// System.out.println("an=" + an.printNode(0) + " an.getSrc()=" + an.getSrc().getClass()
+// + " at " + cd.getSourceFileName() + "::" + an.getNumLine());
+ if (!CompositeLattice.isGreaterThan(srcLocation, destLocation)) {
throw new Error("The value flow from " + srcLocation + " to " + destLocation
+ " does not respect location hierarchy on the assignment " + an.printNode(0) + "at "
+ cd.getSourceFileName() + "::" + an.getNumLine());
} else {
destLocation =
srcLocation = checkLocationFromExpressionNode(md, nametable, an.getDest(), srcLocation);
+ // TODO
+ // if (!((Set<String>) state.getCd2LocationPropertyMap().get(new Pair(cd,
+ // "spin")))
+ // .contains(destLocation.getLocation(cd).getLocIdentifier())) {
+ // throw new Error("Location " + destLocation +
+ // " is not allowed to have spinning values at "
+ // + cd.getSourceFileName() + ":" + an.getNumLine());
+ // }
- if (!ssjava.getClassLattice(cd).getSpinLocSet()
- .contains(destLocation.getLocation(cd).getLocIdentifier())) {
- throw new Error("Location " + destLocation + " is not allowed to have spinning values at "
- + cd.getSourceFileName() + ":" + an.getNumLine());
- }
-
- }
- if (an.getSrc() != null) {
- addTypeLocation(an.getSrc().getType(), srcLocation);
}
- addTypeLocation(an.getDest().getType(), destLocation);
+ // if (an.getSrc() != null) {
+ // addTypeLocation(an.getSrc().getType(), srcLocation);
+ // }
+ // addTypeLocation(an.getDest().getType(), destLocation);
return destLocation;
}
+ md.getSymbol() + " of the class " + cd.getSymbol());
}
- if (annotationVec.size() > 1) {
- // variable can have at most one location
+ if (annotationVec.size() > 1) { // variable can have at most one location
throw new Error(vd.getSymbol() + " has more than one location.");
}
if (ad.getType() == AnnotationDescriptor.SINGLE_ANNOTATION) {
if (ad.getMarker().equals(SSJavaAnalysis.LOC)) {
- String locationID = ad.getValue();
- // check if location is defined
- SSJavaLattice<String> lattice = ssjava.getClassLattice(cd);
- if (lattice == null || (!lattice.containsKey(locationID))) {
- throw new Error("Location " + locationID
- + " is not defined in the location hierarchy of class " + cd.getSymbol() + ".");
- }
- Location loc = new Location(cd, locationID);
- d2loc.put(vd, loc);
- addTypeLocation(vd.getType(), loc);
+ String locDec = ad.getValue(); // check if location is defined
+ CompositeLocation compLoc = parseLocationDeclaration(md, n, locDec);
+ d2loc.put(vd, compLoc);
+ addTypeLocation(vd.getType(), compLoc);
} else if (ad.getMarker().equals(SSJavaAnalysis.DELTA)) {
+ // TODO
+ // CompositeLocation compLoc = new CompositeLocation(cd);
+ //
+ // if (ad.getValue().length() == 0) {
+ // throw new Error("Delta function of " + vd.getSymbol() +
+ // " does not have any locations: "
+ // + cd.getSymbol() + ".");
+ // }
+ //
+ // String deltaStr = ad.getValue();
+ // if (deltaStr.startsWith("LOC(")) {
+ //
+ // if (!deltaStr.endsWith(")")) {
+ // throw new Error("The declaration of the delta location is wrong at "
+ // + cd.getSourceFileName() + ":" + n.getNumLine());
+ // }
+ // String locationOperand = deltaStr.substring(4, deltaStr.length() -
+ // 1);
+ //
+ // nametable.get(locationOperand);
+ // Descriptor d = (Descriptor) nametable.get(locationOperand);
+ //
+ // if (d instanceof VarDescriptor) {
+ // VarDescriptor varDescriptor = (VarDescriptor) d;
+ // DeltaLocation deltaLoc = new DeltaLocation(cd, varDescriptor); //
+ // td2loc.put(vd.getType(),
+ // // compLoc);
+ // compLoc.addLocation(deltaLoc);
+ // } else if (d instanceof FieldDescriptor) {
+ // throw new Error("Applying delta operation to the field " +
+ // locationOperand
+ // + " is not allowed at " + cd.getSourceFileName() + ":" +
+ // n.getNumLine());
+ // }
+ // } else {
+ // StringTokenizer token = new StringTokenizer(deltaStr, ",");
+ // DeltaLocation deltaLoc = new DeltaLocation(cd);
+ //
+ // while (token.hasMoreTokens()) {
+ // String deltaOperand = token.nextToken();
+ // ClassDescriptor deltaCD = id2cd.get(deltaOperand);
+ // if (deltaCD == null) {
+ // // delta operand is not defined in the location hierarchy throw
+ // // new
+ // Error("Delta operand '" + deltaOperand + "' of declaration node '" +
+ // vd
+ // + "' is not defined by location hierarchies.");
+ // }
+ //
+ // Location loc = new Location(deltaCD, deltaOperand);
+ // deltaLoc.addDeltaOperand(loc);
+ // }
+ // compLoc.addLocation(deltaLoc);
+ //
+ // }
+ //
+ // d2loc.put(vd, compLoc);
+ // addTypeLocation(vd.getType(), compLoc);
- CompositeLocation compLoc = new CompositeLocation(cd);
+ }
+ }
- if (ad.getValue().length() == 0) {
- throw new Error("Delta function of " + vd.getSymbol() + " does not have any locations: "
- + cd.getSymbol() + ".");
- }
+ }
- String deltaStr = ad.getValue();
- if (deltaStr.startsWith("LOC(")) {
+ private CompositeLocation parseLocationDeclaration(MethodDescriptor md, TreeNode n, String locDec) {
- if (!deltaStr.endsWith(")")) {
- throw new Error("The declaration of the delta location is wrong at "
- + cd.getSourceFileName() + ":" + n.getNumLine());
- }
- String locationOperand = deltaStr.substring(4, deltaStr.length() - 1);
-
- nametable.get(locationOperand);
- Descriptor d = (Descriptor) nametable.get(locationOperand);
-
- if (d instanceof VarDescriptor) {
- VarDescriptor varDescriptor = (VarDescriptor) d;
- DeltaLocation deltaLoc = new DeltaLocation(cd, varDescriptor);
- // td2loc.put(vd.getType(), compLoc);
- compLoc.addLocation(deltaLoc);
- } else if (d instanceof FieldDescriptor) {
- throw new Error("Applying delta operation to the field " + locationOperand
- + " is not allowed at " + cd.getSourceFileName() + ":" + n.getNumLine());
- }
- } else {
- StringTokenizer token = new StringTokenizer(deltaStr, ",");
- DeltaLocation deltaLoc = new DeltaLocation(cd);
-
- while (token.hasMoreTokens()) {
- String deltaOperand = token.nextToken();
- ClassDescriptor deltaCD = id2cd.get(deltaOperand);
- if (deltaCD == null) {
- // delta operand is not defined in the location hierarchy
- throw new Error("Delta operand '" + deltaOperand + "' of declaration node '" + vd
- + "' is not defined by location hierarchies.");
- }
+ CompositeLocation compLoc = new CompositeLocation();
- Location loc = new Location(deltaCD, deltaOperand);
- deltaLoc.addDeltaOperand(loc);
- }
- compLoc.addLocation(deltaLoc);
+ StringTokenizer tokenizer = new StringTokenizer(locDec, ",");
+ List<String> locIdList = new ArrayList<String>();
+ while (tokenizer.hasMoreTokens()) {
+ String locId = tokenizer.nextToken();
+ locIdList.add(locId);
+ }
- }
+ // at least,one location element needs to be here!
+ assert (locIdList.size() > 0);
- d2loc.put(vd, compLoc);
- addTypeLocation(vd.getType(), compLoc);
+ // assume that loc with idx 0 comes from the local lattice
+ // loc with idx 1 comes from the field lattice
+ String localLocId = locIdList.get(0);
+ SSJavaLattice<String> localLattice = CompositeLattice.getLatticeByDescriptor(md);
+ Location localLoc = new Location(md, localLocId);
+ if (localLattice == null || (!localLattice.containsKey(localLocId))) {
+ throw new Error("Location " + localLocId
+ + " is not defined in the local variable lattice at "
+ + md.getClassDesc().getSourceFileName() + "::" + n.getNumLine() + ".");
+ }
+ compLoc.addLocation(localLoc);
+
+ for (int i = 1; i < locIdList.size(); i++) {
+ String locName = locIdList.get(i);
+ ClassDescriptor cd = fieldLocName2cd.get(locName);
+
+ SSJavaLattice<String> fieldLattice = CompositeLattice.getLatticeByDescriptor(cd);
+
+ if (fieldLattice == null || (!fieldLattice.containsKey(locName))) {
+ throw new Error("Location " + locName + " is not defined in the field lattice at "
+ + cd.getSourceFileName() + ".");
}
+
+ Location fieldLoc = new Location(cd, locName);
+ compLoc.addLocation(fieldLoc);
}
+ return compLoc;
+
}
private void checkDeclarationNode(MethodDescriptor md, SymbolTable nametable, DeclarationNode dn) {
SSJavaLattice<String> lattice = ssjava.getClassLattice(cd);
if (lattice == null || (!lattice.containsKey(locationID))) {
throw new Error("Location " + locationID
- + " is not defined in the location hierarchy of class " + cd.getSymbol() + ".");
+ + " is not defined in the field lattice of class " + cd.getSymbol() + " at"
+ + cd.getSourceFileName() + ".");
}
Location loc = new Location(cd, locationID);
- d2loc.put(fd, loc);
+ // d2loc.put(fd, loc);
addTypeLocation(fd.getType(), loc);
} else if (ad.getMarker().equals(SSJavaAnalysis.DELTA)) {
- if (ad.getValue().length() == 0) {
- throw new Error("Delta function of " + fd.getSymbol() + " does not have any locations: "
- + cd.getSymbol() + ".");
- }
-
- CompositeLocation compLoc = new CompositeLocation(cd);
- DeltaLocation deltaLoc = new DeltaLocation(cd);
-
- StringTokenizer token = new StringTokenizer(ad.getValue(), ",");
- while (token.hasMoreTokens()) {
- String deltaOperand = token.nextToken();
- ClassDescriptor deltaCD = id2cd.get(deltaOperand);
- if (deltaCD == null) {
- // delta operand is not defined in the location hierarchy
- throw new Error("Delta operand '" + deltaOperand + "' of field node '" + fd
- + "' is not defined by location hierarchies.");
- }
-
- Location loc = new Location(deltaCD, deltaOperand);
- deltaLoc.addDeltaOperand(loc);
- }
- compLoc.addLocation(deltaLoc);
- d2loc.put(fd, compLoc);
- addTypeLocation(fd.getType(), compLoc);
+ // if (ad.getValue().length() == 0) {
+ // throw new Error("Delta function of " + fd.getSymbol() +
+ // " does not have any locations: "
+ // + cd.getSymbol() + ".");
+ // }
+ //
+ // CompositeLocation compLoc = new CompositeLocation(cd);
+ // DeltaLocation deltaLoc = new DeltaLocation(cd);
+ //
+ // StringTokenizer token = new StringTokenizer(ad.getValue(), ",");
+ // while (token.hasMoreTokens()) {
+ // String deltaOperand = token.nextToken();
+ // ClassDescriptor deltaCD = id2cd.get(deltaOperand);
+ // if (deltaCD == null) {
+ // // delta operand is not defined in the location hierarchy
+ // throw new Error("Delta operand '" + deltaOperand +
+ // "' of field node '" + fd
+ // + "' is not defined by location hierarchies.");
+ // }
+ //
+ // Location loc = new Location(deltaCD, deltaOperand);
+ // deltaLoc.addDeltaOperand(loc);
+ // }
+ // compLoc.addLocation(deltaLoc);
+ // d2loc.put(fd, compLoc);
+ // addTypeLocation(fd.getType(), compLoc);
}
}
}
+ private void addTypeLocation(TypeDescriptor type, CompositeLocation loc) {
+ if (type != null) {
+ type.setExtension(loc);
+ }
+ }
+
private void addTypeLocation(TypeDescriptor type, Location loc) {
if (type != null) {
type.setExtension(loc);
static class CompositeLattice {
- public static boolean isGreaterThan(Location loc1, Location loc2, ClassDescriptor priorityCD) {
+ public static boolean isGreaterThan(CompositeLocation loc1, CompositeLocation loc2) {
// System.out.println("\nisGreaterThan=" + loc1 + " ? " + loc2);
- CompositeLocation compLoc1;
- CompositeLocation compLoc2;
- if (loc1 instanceof CompositeLocation) {
- compLoc1 = (CompositeLocation) loc1;
- } else {
- // create a bogus composite location for a single location
- compLoc1 = new CompositeLocation(loc1.getClassDescriptor());
- compLoc1.addLocation(loc1);
- }
-
- if (loc2 instanceof CompositeLocation) {
- compLoc2 = (CompositeLocation) loc2;
- } else {
- // create a bogus composite location for a single location
- compLoc2 = new CompositeLocation(loc2.getClassDescriptor());
- compLoc2.addLocation(loc2);
- }
-
- // comparing two composite locations
- // System.out.println("compare base location=" + compLoc1 + " ? " +
- // compLoc2);
-
- int baseCompareResult = compareBaseLocationSet(compLoc1, compLoc2, priorityCD);
+ int baseCompareResult = compareBaseLocationSet(loc1, loc2);
if (baseCompareResult == ComparisonResult.EQUAL) {
- if (compareDelta(compLoc1, compLoc2) == ComparisonResult.GREATER) {
+ if (compareDelta(loc1, loc2) == ComparisonResult.GREATER) {
return true;
} else {
return false;
}
- private static int compareDelta(CompositeLocation compLoc1, CompositeLocation compLoc2) {
- if (compLoc1.getNumofDelta() < compLoc2.getNumofDelta()) {
- return ComparisonResult.GREATER;
- } else {
- return ComparisonResult.LESS;
- }
+ private static int compareDelta(CompositeLocation dLoc1, CompositeLocation dLoc2) {
+ // TODO
+ return 0;
+ // if (compLoc1.getNumofDelta() < compLoc2.getNumofDelta()) {
+ // return ComparisonResult.GREATER;
+ // } else {
+ // return ComparisonResult.LESS;
+ // }
}
- private static int compareBaseLocationSet(CompositeLocation compLoc1,
- CompositeLocation compLoc2, ClassDescriptor priorityCD) {
+ private static int compareBaseLocationSet(CompositeLocation compLoc1, CompositeLocation compLoc2) {
// if compLoc1 is greater than compLoc2, return true
// else return false;
- Map<ClassDescriptor, Location> cd2loc1 = compLoc1.getCd2Loc();
- Map<ClassDescriptor, Location> cd2loc2 = compLoc2.getCd2Loc();
-
- // compare first the priority loc elements
- Location priorityLoc1 = cd2loc1.get(priorityCD);
- Location priorityLoc2 = cd2loc2.get(priorityCD);
-
- assert (priorityLoc1.getClassDescriptor().equals(priorityLoc2.getClassDescriptor()));
+ // if (compLoc1.getSize() != compLoc2.getSize()) {
+ // throw new Error("Failed to compare two locations of " + compLoc1 +
+ // " and " + compLoc2
+ // + " because they are not comparable.");
+ // }
+
+ // compare one by one in according to the order of the tuple
+ int numOfTie = 0;
+ for (int i = 0; i < compLoc1.getSize(); i++) {
+ Location loc1 = compLoc1.get(i);
+ if (i >= compLoc2.getSize()) {
+ throw new Error("Failed to compare two locations of " + compLoc1 + " and " + compLoc2
+ + " because they are not comparable.");
+ }
+ Location loc2 = compLoc2.get(i);
- ClassDescriptor cd = priorityLoc1.getClassDescriptor();
+ if (!loc1.getDescriptor().equals(loc2.getDescriptor())) {
+ throw new Error("Failed to compare two locations of " + compLoc1 + " and " + compLoc2
+ + " because they are not comparable.");
+ }
- SSJavaLattice<String> locationOrder = ssjava.getClassLattice(cd);
+ Descriptor d1 = loc1.getDescriptor();
+ Descriptor d2 = loc2.getDescriptor();
- if (priorityLoc1.getLocIdentifier().equals(priorityLoc2.getLocIdentifier())) {
- // have the same level of local hierarchy
+ SSJavaLattice<String> lattice1 = getLatticeByDescriptor(d1);
+ SSJavaLattice<String> lattice2 = getLatticeByDescriptor(d2);
- Set<String> spinSet = ssjava.getClassLattice(cd).getSpinLocSet();
+ if (!lattice1.equals(lattice2)) {
+ throw new Error("Failed to compare two locations of " + compLoc1 + " and " + compLoc2
+ + " because they are not comparable.");
+ }
- if (spinSet != null && spinSet.contains(priorityLoc1.getLocIdentifier())) {
- // this location can be spinning
+ if (loc1.getLocIdentifier().equals(loc2.getLocIdentifier())) {
+ numOfTie++;
+ continue;
+ } else if (lattice1.isGreaterThan(loc1.getLocIdentifier(), loc2.getLocIdentifier())) {
return ComparisonResult.GREATER;
}
- } else if (locationOrder.isGreaterThan(priorityLoc1.getLocIdentifier(),
- priorityLoc2.getLocIdentifier())) {
- // if priority loc of compLoc1 is higher than compLoc2
- // then, compLoc 1 is higher than compLoc2
- return ComparisonResult.GREATER;
- } else {
- // if priority loc of compLoc1 is NOT higher than compLoc2
- // then, compLoc 1 is NOT higher than compLoc2
- return ComparisonResult.LESS;
}
- // compare base locations except priority by class descriptor
- Set<ClassDescriptor> keySet1 = cd2loc1.keySet();
- int numEqualLoc = 0;
-
- for (Iterator iterator = keySet1.iterator(); iterator.hasNext();) {
- ClassDescriptor cd1 = (ClassDescriptor) iterator.next();
-
- Location loc1 = cd2loc1.get(cd1);
- Location loc2 = cd2loc2.get(cd1);
-
- if (priorityLoc1.equals(loc1)) {
- continue;
- }
-
- if (loc2 == null) {
- // if comploc2 doesn't have corresponding location,
- // then we determines that comploc1 is lower than comploc 2
- return ComparisonResult.LESS;
- }
+ if (numOfTie == compLoc1.getSize()) {
- System.out.println("lattice comparison:" + loc1.getLocIdentifier() + " ? "
- + loc2.getLocIdentifier());
- locationOrder = ssjava.getClassLattice(cd1);
- if (loc1.getLocIdentifier().equals(loc2.getLocIdentifier())) {
- // have the same level of local hierarchy
- numEqualLoc++;
- } else if (!locationOrder.isGreaterThan(loc1.getLocIdentifier(), loc2.getLocIdentifier())) {
- // if one element of composite location 1 is not higher than composite
- // location 2
- // then, composite loc 1 is not higher than composite loc 2
-
- System.out.println(compLoc1 + " < " + compLoc2);
- return ComparisonResult.LESS;
+ if (numOfTie != compLoc2.getSize()) {
+ throw new Error("Failed to compare two locations of " + compLoc1 + " and " + compLoc2
+ + " because they are not comparable.");
}
- }
-
- if (numEqualLoc == (compLoc1.getBaseLocationSize() - 1)) {
return ComparisonResult.EQUAL;
}
- System.out.println(compLoc1 + " > " + compLoc2);
- return ComparisonResult.GREATER;
+ return ComparisonResult.LESS;
+
}
- public static CompositeLocation calculateGLB(ClassDescriptor cd,
- Set<CompositeLocation> inputSet, ClassDescriptor priorityCD) {
+ public static CompositeLocation calculateGLB(Set<CompositeLocation> inputSet) {
- CompositeLocation glbCompLoc = new CompositeLocation(cd);
- int maxDeltaFunction = 0;
+ // System.out.println("Calculating GLB=" + inputSet);
+ CompositeLocation glbCompLoc = new CompositeLocation();
- // calculate GLB of priority element first
+ // calculate GLB of the first(priority) element
+ Set<String> priorityLocIdentifierSet = new HashSet<String>();
+ Descriptor priorityDescriptor = null;
- Hashtable<ClassDescriptor, Set<Location>> cd2locSet =
- new Hashtable<ClassDescriptor, Set<Location>>();
+ Hashtable<String, Set<CompositeLocation>> locId2CompLocSet =
+ new Hashtable<String, Set<CompositeLocation>>();
+ // mapping from the priority loc ID to its full representation by the
+ // composite location
- // creating mapping from class to set of locations
for (Iterator iterator = inputSet.iterator(); iterator.hasNext();) {
CompositeLocation compLoc = (CompositeLocation) iterator.next();
+ Location priorityLoc = compLoc.get(0);
+ String priorityLocId = priorityLoc.getLocIdentifier();
+ priorityLocIdentifierSet.add(priorityLocId);
- int numOfDelta = compLoc.getNumofDelta();
- if (numOfDelta > maxDeltaFunction) {
- maxDeltaFunction = numOfDelta;
+ if (locId2CompLocSet.contains(priorityLocId)) {
+ locId2CompLocSet.get(priorityLocId).add(compLoc);
+ } else {
+ Set<CompositeLocation> newSet = new HashSet<CompositeLocation>();
+ newSet.add(compLoc);
+ locId2CompLocSet.put(priorityLocId, newSet);
}
- Set<Location> baseLocationSet = compLoc.getBaseLocationSet();
- for (Iterator iterator2 = baseLocationSet.iterator(); iterator2.hasNext();) {
- Location locElement = (Location) iterator2.next();
- ClassDescriptor locCD = locElement.getClassDescriptor();
-
- Set<Location> locSet = cd2locSet.get(locCD);
- if (locSet == null) {
- locSet = new HashSet<Location>();
- }
- locSet.add(locElement);
-
- cd2locSet.put(locCD, locSet);
-
+ // check if priority location are coming from the same lattice
+ if (priorityDescriptor == null) {
+ priorityDescriptor = priorityLoc.getDescriptor();
+ } else if (!priorityDescriptor.equals(priorityLoc.getDescriptor())) {
+ throw new Error("Failed to calculate GLB of " + inputSet
+ + " because they are from different lattices.");
}
}
- Set<Location> locSetofClass = cd2locSet.get(priorityCD);
- Set<String> locIdentifierSet = new HashSet<String>();
+ SSJavaLattice<String> locOrder = getLatticeByDescriptor(priorityDescriptor);
+ String glbOfPriorityLoc = locOrder.getGLB(priorityLocIdentifierSet);
- for (Iterator<Location> locIterator = locSetofClass.iterator(); locIterator.hasNext();) {
- Location locElement = locIterator.next();
- locIdentifierSet.add(locElement.getLocIdentifier());
- }
-
- Lattice<String> locOrder = ssjava.getClassLattice(priorityCD);
- String glbLocIdentifer = locOrder.getGLB(locIdentifierSet);
-
- Location priorityGLB = new Location(priorityCD, glbLocIdentifer);
+ glbCompLoc.addLocation(new Location(priorityDescriptor, glbOfPriorityLoc));
- Set<CompositeLocation> sameGLBLoc = new HashSet<CompositeLocation>();
+ Set<CompositeLocation> compSet = locId2CompLocSet.get(glbOfPriorityLoc);
- for (Iterator<CompositeLocation> iterator = inputSet.iterator(); iterator.hasNext();) {
- CompositeLocation inputComploc = iterator.next();
- Location locElement = inputComploc.getLocation(priorityCD);
-
- if (locElement.equals(priorityGLB)) {
- sameGLBLoc.add(inputComploc);
+ if (compSet.size() == 1) {
+ // if GLB(x1,x2)==x1 or x2 : GLB case 2,3
+ CompositeLocation comp = compSet.iterator().next();
+ for (int i = 1; i < comp.getSize(); i++) {
+ glbCompLoc.addLocation(comp.get(i));
}
- }
- glbCompLoc.addLocation(priorityGLB);
- if (sameGLBLoc.size() > 0) {
+ } else if (compSet.size() == 0) {
+ // when GLB(x1,x2)!=x1 and !=x2 : GLB case 4
+ // mean that the result is already lower than <x1,y1> and <x2,y2>
+ // assign TOP to the rest of the location elements
+ CompositeLocation inputComp = inputSet.iterator().next();
+ for (int i = 1; i < inputComp.getSize(); i++) {
+ glbCompLoc.addLocation(Location.createTopLocation(inputComp.get(i).getDescriptor()));
+ }
+ } else {
+ // when GLB(x1,x2)==x1 and x2 : GLB case 1
// if more than one location shares the same priority GLB
// need to calculate the rest of GLB loc
- Set<Location> glbElementSet = new HashSet<Location>();
-
- for (Iterator<ClassDescriptor> iterator = cd2locSet.keySet().iterator(); iterator.hasNext();) {
- ClassDescriptor localCD = iterator.next();
- if (!localCD.equals(priorityCD)) {
- Set<Location> localLocSet = cd2locSet.get(localCD);
- Set<String> LocalLocIdSet = new HashSet<String>();
-
- for (Iterator<Location> locIterator = localLocSet.iterator(); locIterator.hasNext();) {
- Location locElement = locIterator.next();
- LocalLocIdSet.add(locElement.getLocIdentifier());
- }
-
- Lattice<String> localOrder = ssjava.getClassLattice(localCD);
- Location localGLBLoc = new Location(localCD, localOrder.getGLB(LocalLocIdSet));
- glbCompLoc.addLocation(localGLBLoc);
- }
- }
- } else {
- // if priority glb loc is lower than all of input loc
- // assign top location to the rest of loc element
-
- for (Iterator<ClassDescriptor> iterator = cd2locSet.keySet().iterator(); iterator.hasNext();) {
- ClassDescriptor localCD = iterator.next();
- if (!localCD.equals(priorityCD)) {
- Location localGLBLoc = Location.createTopLocation(localCD);
- glbCompLoc.addLocation(localGLBLoc);
+ int compositeLocSize = compSet.iterator().next().getSize();
+
+ Set<String> glbInputSet = new HashSet<String>();
+ Descriptor currentD = null;
+ for (int i = 1; i < compositeLocSize; i++) {
+ for (Iterator iterator = compSet.iterator(); iterator.hasNext();) {
+ CompositeLocation compositeLocation = (CompositeLocation) iterator.next();
+ Location currentLoc = compositeLocation.get(i);
+ currentD = currentLoc.getDescriptor();
+ // making set of the current location sharing the same idx
+ glbInputSet.add(currentLoc.getLocIdentifier());
}
+ // calculate glb for the current lattice
+ SSJavaLattice<String> currentLattice = getLatticeByDescriptor(currentD);
+ String currentGLBLocId = currentLattice.getGLB(glbInputSet);
+ glbCompLoc.addLocation(new Location(currentD, currentGLBLocId));
}
}
}
+ static SSJavaLattice<String> getLatticeByDescriptor(Descriptor d) {
+
+ SSJavaLattice<String> lattice = null;
+
+ if (d instanceof ClassDescriptor) {
+ lattice = ssjava.getCd2lattice().get(d);
+ } else if (d instanceof MethodDescriptor) {
+ if (ssjava.getMd2lattice().contains(d)) {
+ lattice = ssjava.getMd2lattice().get(d);
+ } else {
+ // use default lattice for the method
+ lattice = ssjava.getCd2methodDefault().get(((MethodDescriptor) d).getClassDesc());
+ }
+ }
+
+ return lattice;
+ }
+
}
class ComparisonResult {
+//@LATTICE("data<proc,proc<c,c<in,in*,c*,proc*,data*")
+@LATTICE("V<C, V<O")
+@DEFAULTMETHOD("O<V,V<I,V<C,THIS=O")
public class String {
- locdef{
- data<proc,proc<c,c<in,in*,c*,proc*,data*
- }
-
- @LOC("data") char value[];
- @LOC("data") int count;
- @LOC("data") int offset;
- @LOC("data") private int cachedHashcode;
+ @LOC("V") char value[];
+ @LOC("C") int count;
+ @LOC("O") int offset;
+ @LOC("V") private int cachedHashcode;
private String() {
}
-
- public String(@LOC("in") char c) {
- @LOC("data") char[] str = new char[1];
- str[0] = c;
- String(str);
- }
-
- public String(@LOC("in") char str[]) {
- @LOC("in") char charstr[]=new char[str.length];
- for(@LOC("c") int i=0; i<str.length; i++)
- charstr[i]=str[i];
- this.value=charstr;
- this.count=str.length;
- this.offset=0;
- }
-
- public String(@LOC("in") byte str[]) {
- @LOC("in") char charstr[]=new char[str.length];
- for(@LOC("c") int i=0; i<str.length; i++)
- charstr[i]=(char)str[i];
- this.value=charstr;
- this.count=str.length;
- this.offset=0;
- }
-
- public String(@LOC("in") byte str[], @LOC("in") int offset, @LOC("in") int length) {
- if (length>(str.length-offset))
- length=str.length-offset;
- @LOC("in") char charstr[]=new char[length];
- for(@LOC("c")int i=0; i<length; i++)
- charstr[i]=(char)str[i+offset];
- this.value=charstr;
- this.count=length;
- this.offset=0;
- }
-
- public String(@LOC("in") byte str[], @LOC("in") String encoding) {
- @LOC("data") int length = this.count;
- if (length>(str.length))
- length=str.length;
- @LOC("data") char charstr[]=new char[length];
- for(@LOC("c") int i=0; i<length; i++)
- charstr[i]=(char)str[i];
- this.value=charstr;
- this.count=length;
- this.offset=0;
- }
-
- public String(@LOC("in") char str[], @LOC("in") int offset, @LOC("in") int length) {
- if (length>(str.length-offset))
- length=str.length-offset;
- @LOC("in") char charstr[]=new char[length];
- for(@LOC("c") int i=0; i<length; i++)
- charstr[i]=str[i+offset];
- this.value=charstr;
- this.count=length;
- this.offset=0;
- }
-
- public String(@LOC("in") String str) {
- this.value=str.value;
- this.count=str.count;
- this.offset=str.offset;
- }
-
- public String concat(@LOC("in") String str) {
- @LOC("data") String newstr=new String();
- newstr.count=this.count+str.count;
- @LOC("data") char charstr[]=new char[newstr.count];
- newstr.value=charstr;
- newstr.offset=0;
- for(@LOC("c") int i=0; i<count; i++) {
- charstr[i]=value[i+offset];
- }
- for(@LOC("c") int i=0; i<str.count; i++) {
- charstr[i+count]=str.value[i+str.offset];
- }
- return newstr;
- }
- /*
- public String(StringBuffer strbuf) {
- value=new char[strbuf.length()];
- count=strbuf.length();
- offset=0;
- for(int i=0; i<count; i++)
- value[i]=strbuf.value[i];
- }
- */
- /*
- public boolean endsWith(@LOC("in") String suffix) {
- return regionMatches(count - suffix.count, suffix, 0, suffix.count);
- }
-
-
- public String substring(@LOC("in") int beginIndex) {
- return substring(beginIndex, this.count);
- }
-
- public String subString(@LOC("in") int beginIndex, @LOC("in") int endIndex) {
- return substring(beginIndex, endIndex);
- }
-
- public String substring(@LOC("in") int beginIndex, @LOC("in") int endIndex) {
- String str=new String();
- if (beginIndex>this.count||endIndex>this.count||beginIndex>endIndex) {
- // FIXME
- System.printString("Index error: "+beginIndex+" "+endIndex+" "+count+"\n"+this);
- }
- str.value=this.value;
- str.count=endIndex-beginIndex;
- str.offset=this.offset+beginIndex;
- return str;
- }
-
- public String subString(@LOC("in") int beginIndex) {
- return this.subString(beginIndex, this.count);
- }
-
- public int lastindexOf(@LOC("in") int ch) {
- return this.lastindexOf(ch, count - 1);
- }
-
- public int lastIndexOf(@LOC("in") char ch) {
- return this.lastindexOf((int)ch, count - 1);
- }
-
- public static String concat2(@LOC("in") String s1, @LOC("in") String s2) {
- if (s1==null)
- return "null".concat(s2);
- else
- return s1.concat(s2);
- }
-
- public int lastindexOf(@LOC("in") int ch, @LOC("in") int fromIndex) {
- for(int i=fromIndex; i>0; i--)
- if (this.charAt(i)==ch)
- return i;
- return -1;
- }
-
- public String replace(@LOC("in") char oldch, @LOC("in") char newch) {
- char[] buffer=new char[count];
- for(int i=0; i<count; i++) {
- char x=charAt(i);
- if (x==oldch)
- x=newch;
- buffer[i]=x;
- }
- return new String(buffer);
- }
-
- public String toUpperCase() {
- char[] buffer=new char[count];
- for(int i=0; i<count; i++) {
- char x=charAt(i);
- if (x>='a'&&x<='z') {
- x=(char) ((x-'a')+'A');
- }
- buffer[i]=x;
- }
- return new String(buffer);
- }
-
- public String toLowerCase() {
- char[] buffer=new char[count];
- for(int i=0; i<count; i++) {
- char x=charAt(i);
- if (x>='A'&&x<='Z') {
- x=(char) ((x-'A')+'a');
- }
- buffer[i]=x;
- }
- return new String(buffer);
- }
-
- public int indexOf(@LOC("in") int ch) {
- return this.indexOf(ch, 0);
- }
-
- public int indexOf(@LOC("in") int ch, @LOC("in") int fromIndex) {
- for(int i=fromIndex; i<count; i++)
- if (this.charAt(i)==ch)
- return i;
- return -1;
- }
-
- public int indexOf(@LOC("in") String str) {
- return this.indexOf(str, 0);
- }
-
- public int indexOf(@LOC("in") String str, @LOC("in") int fromIndex) {
- if (fromIndex<0)
- fromIndex=0;
- for(int i=fromIndex; i<=(count-str.count); i++)
- if (regionMatches(i, str, 0, str.count))
- return i;
- return -1;
- }
-
- public int indexOfIgnoreCase(@LOC("in") String str, @LOC("in") int fromIndex) {
- if (fromIndex < 0)
- fromIndex = 0;
- }
-
- public int lastIndexOf(@LOC("in") String str, @LOC("in") int fromIndex) {
- int k=count-str.count;
- if (k>fromIndex)
- k=fromIndex;
- for(; k>=0; k--) {
- if (regionMatches(k, str, 0, str.count))
- return k;
- }
- return -1;
- }
-
- public int lastIndexOf(@LOC("in") String str) {
- return lastIndexOf(str, count-str.count);
- }
-
- public boolean startsWith(@LOC("in") String str) {
- return regionMatches(0, str, 0, str.count);
- }
-
- public boolean startsWith(@LOC("in") String str, @LOC("in") int toffset) {
- return regionMatches(toffset, str, 0, str.count);
- }
-
- public boolean regionMatches(@LOC("in") int toffset, @LOC("in") String other, @LOC("in") int ooffset, @LOC("in") int len) {
- if (toffset<0 || ooffset <0 || (toffset+len)>count || (ooffset+len)>other.count)
- return false;
- for(int i=0; i<len; i++)
- if (other.value[i+other.offset+ooffset]!=
- this.value[i+this.offset+toffset])
- return false;
- return true;
- }
-
- public char[] toCharArray() {
- @LOC("data") char str[]=new char[count];
- for(@LOC("data") int i=0; i<count; i++)
- str[i]=value[i+offset];
- return str;
- }
-
- public byte[] getBytes() {
- byte str[]=new byte[count];
- for(int i=0; i<count; i++)
- str[i]=(byte)value[i+offset];
- return str;
- }
-
- public void getChars(@LOC("in") char dst[], @LOC("in") int dstBegin) {
- getChars(0, count, dst, dstBegin);
- }
-
- public void getChars(@LOC("in") int srcBegin, @LOC("in") int srcEnd, @LOC("in") char dst[],@LOC("in") int dstBegin) {
- if((srcBegin < 0) || (srcEnd > count) || (srcBegin > srcEnd)) {
- // FIXME
- System.printString("Index error: "+srcBegin+" "+srcEnd+" "+count+"\n"+this);
- System.exit(-1);
- }
- int len = srcEnd - srcBegin;
- int j = dstBegin;
- for(int i=srcBegin; i<srcEnd; i++)
- dst[j++]=value[i+offset];
- return;
- }
-*/
- public int length() {
- return count;
- }
-/*
- public char charAt(@LOC("in") int i) {
- return value[i+offset];
- }
-*/
- public String toString() {
- return this;
- }
-
- public static String valueOf(@LOC("in") Object o) {
- @LOC("proc") String rValue;
- if (o==null)
- rValue="null";
- else
- rValue=o.toString();
- return rValue;
- }
-
- public static String valueOf(@LOC("in") int x) {
- @LOC("in") int length=0;
- @LOC("in") int tmp;
- if (x<0)
- tmp=-x;
- else
- tmp=x;
- do {
- tmp=tmp/10;
- length=length+1;
- } while(tmp!=0);
-
- @LOC("in") char chararray[];
- if (x<0)
- chararray=new char[length+1];
- else
- chararray=new char[length];
- @LOC("in") int voffset;
- if (x<0) {
- chararray[0]='-';
- voffset=1;
- x=-x;
- } else
- voffset=0;
-
- do {
- chararray[--length+voffset]=(char)(x%10+'0');
- x=x/10;
- } while (length!=0);
- return new String(chararray);
- }
-
-/*
- public static String valueOf(@LOC("in") boolean b) {
- if (b)
- return new String("true");
- else
- return new String("false");
- }
-
- public static String valueOf(@LOC("in") char c) {
- @LOC("data") char ar[]=new char[1];
- ar[0]=c;
- return new String(ar);
- }
-
-
-
- public static String valueOf(@LOC("in") double val) {
- char[] chararray=new char[20];
- String s=new String();
- s.offset=0;
- s.count=convertdoubletochar(val, chararray);
- s.value=chararray;
- return s;
- }
-
- public static native int convertdoubletochar(double val, char [] chararray);
-
- public static String valueOf(@LOC("in") long x) {
- int length=0;
- long tmp;
- if (x<0)
- tmp=-x;
- else
- tmp=x;
- do {
- tmp=tmp/10;
- length=length+1;
- } while(tmp!=0);
-
- char chararray[];
- if (x<0)
- chararray=new char[length+1];
- else
- chararray=new char[length];
- int voffset;
- if (x<0) {
- chararray[0]='-';
- voffset=1;
- x=-x;
- } else
- voffset=0;
-
- do {
- chararray[--length+voffset]=(char)(x%10+'0');
- x=x/10;
- } while (length!=0);
- return new String(chararray);
- }
-
- public int compareTo(@LOC("in") String s) {
- int smallerlength=count<s.count?count:s.count;
-
- for( int i = 0; i < smallerlength; i++ ) {
- int valDiff = this.charAt(i) - s.charAt(i);
- if( valDiff != 0 ) {
- return valDiff;
- }
- }
- return count-s.count;
- }
-*/
- public int hashCode() {
- if (cachedHashcode!=0)
- return cachedHashcode;
- @LOC("data") int hashcode=0;
- for(@LOC("c") int i=0; i<count; i++)
- hashcode=hashcode*31+value[i+offset];
- cachedHashcode=hashcode;
- return hashcode;
- }
-
- public boolean equals(@LOC("in") Object o) {
- if (o.getType()!=getType())
- return false;
- @LOC("in") String s=(String)o;
- if (s.count!=count)
- return false;
- for(@LOC("c") int i=0; i<count; i++) {
- if (s.value[i+s.offset]!=value[i+offset])
- return false;
- }
- return true;
- }
- /*
- public boolean equalsIgnoreCase(@LOC("in") String s) {
- if (s.count!=count)
- return false;
- for(int i=0; i<count; i++) {
- char l=s.value[i+s.offset];
- char r=value[i+offset];
- if (l>='a'&&l<='z')
- l=(char)((l-'a')+'A');
- if (r>='a'&&r<='z')
- r=(char)((r-'a')+'A');
- if (l!=r)
- return false;
- }
- return true;
- }
-
- public Vector split() {
- Vector splitted = new Vector();
- int i;
- int cnt =0;
-
- // skip first spaces
- for(i = 0; i< count;i++) {
- if(value[i+offset] != '\n' && value[i+offset] != '\t' && value[i+offset] != ' ')
- break;
- }
-
- int oldi=i;
-
- while(i<count) {
- if(value[i+offset] == '\n' || value[i+offset] == '\t' || value[i+offset] == ' ') {
- String t=new String();
- t.value=value;
- t.offset=oldi;
- t.count=i-oldi;
- splitted.addElement(t);
-
- // skip extra spaces
- while( i < count && ( value[i+offset] == '\n' || value[i+offset] == '\t' || value[i+offset] == ' ')) {
- i++;
- }
- oldi=i;
- } else {
- i++;
- }
- }
-
- if(i!=oldi) {
- String t=new String();
- t.value=value;
- t.offset=oldi;
- t.count=i-oldi;
- splitted.addElement(t);
- }
-
- return splitted;
- }
-
- public boolean contains(@LOC("in") String str)
- {
- int i,j;
- char[] strChar = str.toCharArray();
- int cnt;
-
- for(i = 0; i < count; i++) {
- if(value[i] == strChar[0]) {
- cnt=0;
- for(j=0; j < str.length() && i+j < count;j++) {
- if(value[i+j] == strChar[j])
- cnt++;
- }
- if(cnt == str.length())
- return true;
- }
- }
-
- return false;
-
- }
-
- public String trim() {
- int len = count;
- int st = 0;
- int off = offset; //avoid getfield opcode
- char[] val = value; // avoid getfield opcode
-
- while ((st < len) && (val[off + st] <= ' ')) {
- st++;
- }
- while ((st < len) && (val[off + len - 1] <= ' ')) {
- len--;
- }
- return ((st > 0) || (len < count)) ? substring(st, len) : this;
- }
-
- public boolean matches(@LOC("in") String regex) {
- System.println("String.matches() is not fully supported");
- return this.equals(regex);
- }
- */
}
projects / IRC.git / commitdiff