@Override
public void visitCode(Code obj) {
Method m = getMethod();
if (m.getReturnType() == Type.VOID) {
return;
}
stack.resetForMethodEntry(this);
ifBlocks.clear();
activeUnconditional = null;
CodeException[] ces = obj.getExceptionTable();
if (CollectionUtils.isEmpty(ces)) {
catchPCs = null;
} else {
catchPCs = new BitSet();
for (CodeException ce : ces) {
catchPCs.set(ce.getHandlerPC());
}
}
gotoBranchPCs.clear();
casePositions.clear();
lookingForResetOp = false;
try {
super.visitCode(obj);
} catch (StopOpcodeParsingException e) {
// reported an issue, so get out
}
}
/**
* implements the visitor to reset the stack and proceed for private methods
*
* @param obj the context object of the currently parsed code block
*/
@Override
public void visitCode(Code obj) {
Method m = getMethod();
int aFlags = m.getAccessFlags();
if ((((aFlags & Constants.ACC_PRIVATE) != 0) || ((aFlags & Constants.ACC_STATIC) != 0))
&& ((aFlags & Constants.ACC_SYNTHETIC) == 0)
&& (!m.getSignature().endsWith(")Z"))) {
stack.resetForMethodEntry(this);
returnRegister = -1;
returnConstant = null;
registerConstants.clear();
methodSuspect = true;
returnPC = -1;
super.visitCode(obj);
if (methodSuspect && (returnConstant != null)) {
BugInstance bi =
new BugInstance(
this,
BugType.MRC_METHOD_RETURNS_CONSTANT.name(),
((aFlags & Constants.ACC_PRIVATE) != 0) ? NORMAL_PRIORITY : LOW_PRIORITY)
.addClass(this)
.addMethod(this);
if (returnPC >= 0) {
bi.addSourceLine(this, returnPC);
}
bi.addString(returnConstant.toString());
bugReporter.reportBug(bi);
}
}
}
/**
* implements the visitor to reset the stack
*
* @param obj the context object of the currently parsed code block
*/
@Override
public void visitCode(Code obj) {
stack.resetForMethodEntry(this);
regValueType.clear();
state = State.SEEN_NOTHING;
loopStart = -1;
loopEnd = -1;
super.visitCode(obj);
}
/**
* overrides the visitor reset the stack
*
* @param obj the context object of the currently parsed code block
*/
@Override
public void visitCode(Code obj) {
stack.resetForMethodEntry(this);
localSpecialObjects.clear();
sawTernary = false;
super.visitCode(obj);
for (Integer pc : localSpecialObjects.values()) {
bugReporter.reportBug(
makeLocalBugInstance().addClass(this).addMethod(this).addSourceLine(this, pc.intValue()));
}
}
/**
* implements the visitor to reset the stack
*
* @param obj the context object of the currently parsed code block
*/
@Override
public void visitCode(Code obj) {
stack.resetForMethodEntry(this);
super.visitCode(obj);
for (Map.Entry<Integer, CollectionRegInfo> entry : syncRegs.entrySet()) {
CollectionRegInfo cri = entry.getValue();
if (!cri.getIgnore()) {
bugReporter.reportBug(
new BugInstance(this, "LSYC_LOCAL_SYNCHRONIZED_COLLECTION", cri.getPriority())
.addClass(this)
.addMethod(this)
.addSourceLine(cri.getSourceLineAnnotation()));
}
}
}
/**
* overrides the visitor to reset the stack for the new method, then checks if the immutability
* field is set to immutable and if so reports it
*
* @param obj the context object of the currently parsed method
*/
@Override
public void visitCode(Code obj) {
try {
String signature = Type.getReturnType(getMethod().getSignature()).getSignature();
if (signature.startsWith("L")
&& CollectionUtils.isListSetMap(signature.substring(1, signature.length() - 1))) {
stack.resetForMethodEntry(this);
imType = ImmutabilityType.UNKNOWN;
super.visitCode(obj);
if ((imType == ImmutabilityType.IMMUTABLE)
|| (imType == ImmutabilityType.POSSIBLY_IMMUTABLE)) {
Method m = getMethod();
Statistics.getStatistics()
.addImmutabilityStatus(clsName, m.getName(), m.getSignature(), imType);
}
}
} catch (ClassNotFoundException cnfe) {
bugReporter.reportMissingClass(cnfe);
}
}
/**
* implements the visitor to reset the opcode stack
*
* @param obj the context object for the currently parsed code block
*/
@Override
public void visitCode(Code obj) {
stack.resetForMethodEntry(this);
super.visitCode(obj);
}