Java Code Examples for org.apache.bcel.Const#ASTORE_0
The following examples show how to use
org.apache.bcel.Const#ASTORE_0 .
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Example 1
| Source File: StringConcatenation.java From spotbugs with GNU Lesser General Public License v2.1 | 6 votes |
|
private boolean storeIntoRegister(int seen, int reg) {
switch (seen) {
case Const.ASTORE_0:
return reg == 0;
case Const.ASTORE_1:
return reg == 1;
case Const.ASTORE_2:
return reg == 2;
case Const.ASTORE_3:
return reg == 3;
case Const.ASTORE:
return reg == getRegisterOperand();
default:
return false;
}
}
Example 2
| Source File: DismantleBytecode.java From spotbugs with GNU Lesser General Public License v2.1 | 5 votes |
|
public boolean isRegisterStore(int opcode) {
switch (opcode) {
case Const.ISTORE_0:
case Const.ISTORE_1:
case Const.ISTORE_2:
case Const.ISTORE_3:
case Const.ASTORE_0:
case Const.ASTORE_1:
case Const.ASTORE_2:
case Const.ASTORE_3:
case Const.FSTORE_0:
case Const.FSTORE_1:
case Const.FSTORE_2:
case Const.FSTORE_3:
case Const.DSTORE_0:
case Const.DSTORE_1:
case Const.DSTORE_2:
case Const.DSTORE_3:
case Const.LSTORE_0:
case Const.LSTORE_1:
case Const.LSTORE_2:
case Const.LSTORE_3:
case Const.ISTORE:
case Const.FSTORE:
case Const.ASTORE:
case Const.LSTORE:
case Const.DSTORE:
return true;
default:
return false;
}
}
Example 3
| Source File: SuspiciousThreadInterrupted.java From spotbugs with GNU Lesser General Public License v2.1 | 4 votes |
|
@Override
public void sawOpcode(int seen) {
if (state == SEEN_POSSIBLE_THREAD) {
if (seen == Const.POP) {
state = SEEN_UNKNOWNCONTEXT_POP;
return;
} else {
state = SEEN_NOTHING;
}
}
switch (state) {
case SEEN_NOTHING:
if ((seen == Const.INVOKESTATIC) && "java/lang/Thread".equals(getClassConstantOperand())
&& "currentThread".equals(getNameConstantOperand()) && "()Ljava/lang/Thread;".equals(getSigConstantOperand())) {
state = SEEN_CURRENTTHREAD;
} else if ((seen == Const.INVOKESTATIC || seen == Const.INVOKEINTERFACE || seen == Const.INVOKEVIRTUAL || seen == Const.INVOKESPECIAL)
&& getSigConstantOperand().endsWith("Ljava/lang/Thread;")) {
state = SEEN_POSSIBLE_THREAD;
} else if (seen == Const.ALOAD) {
if (localsWithCurrentThreadValue.get(getRegisterOperand())) {
state = SEEN_CURRENTTHREAD;
} else {
state = SEEN_POSSIBLE_THREAD;
}
} else if ((seen >= Const.ALOAD_0) && (seen <= Const.ALOAD_3)) {
if (localsWithCurrentThreadValue.get(seen - Const.ALOAD_0)) {
state = SEEN_CURRENTTHREAD;
} else {
state = SEEN_POSSIBLE_THREAD;
}
} else if ((seen == Const.GETFIELD || seen == Const.GETSTATIC) && "Ljava/lang/Thread;".equals(getSigConstantOperand())) {
state = SEEN_POSSIBLE_THREAD;
}
break;
case SEEN_CURRENTTHREAD:
if (seen == Const.POP) {
state = SEEN_POP_AFTER_CURRENTTHREAD;
} else if (seen == Const.ASTORE) {
localsWithCurrentThreadValue.set(getRegisterOperand());
state = SEEN_NOTHING;
} else if ((seen >= Const.ASTORE_0) && (seen <= Const.ASTORE_3)) {
localsWithCurrentThreadValue.set(seen - Const.ASTORE_0);
state = SEEN_NOTHING;
} else {
state = SEEN_NOTHING;
}
break;
default:
if ((seen == Const.INVOKESTATIC) && "java/lang/Thread".equals(getClassConstantOperand())
&& "interrupted".equals(getNameConstantOperand()) && "()Z".equals(getSigConstantOperand())) {
if (state == SEEN_POP_AFTER_CURRENTTHREAD) {
bugReporter.reportBug(new BugInstance(this, "STI_INTERRUPTED_ON_CURRENTTHREAD", LOW_PRIORITY)
.addClassAndMethod(this).addSourceLine(this));
} else if (state == SEEN_UNKNOWNCONTEXT_POP) {
bugReporter.reportBug(new BugInstance(this, "STI_INTERRUPTED_ON_UNKNOWNTHREAD", NORMAL_PRIORITY)
.addClassAndMethod(this).addSourceLine(this));
}
}
state = SEEN_NOTHING;
break;
}
}
Example 4
| Source File: SynchronizeAndNullCheckField.java From spotbugs with GNU Lesser General Public License v2.1 | 4 votes |
|
@Override
public void sawOpcode(int seen) {
// System.out.println(getPC() + " " + Const.getOpcodeName(seen) + " " +
// currState);
switch (currState) {
case 0:
if (seen == Const.GETFIELD || seen == Const.GETSTATIC) {
syncField = FieldAnnotation.fromReferencedField(this);
currState = 1;
}
break;
case 1:
if (seen == Const.DUP) {
currState = 2;
} else {
currState = 0;
}
break;
case 2:
if (seen == Const.ASTORE || seen == Const.ASTORE_0 || seen == Const.ASTORE_1 || seen == Const.ASTORE_2 || seen == Const.ASTORE_3) {
currState = 3;
} else {
currState = 0;
}
break;
case 3:
if (seen == Const.MONITORENTER) {
currState = 4;
} else {
currState = 0;
}
break;
case 4:
if (seen == Const.GETFIELD || seen == Const.GETSTATIC) {
gottenField = FieldAnnotation.fromReferencedField(this);
currState = 5;
} else {
currState = 0;
}
break;
case 5:
if ((seen == Const.IFNONNULL || seen == Const.IFNULL) && gottenField.equals(syncField)) {
BugInstance bug = new BugInstance(this, "NP_SYNC_AND_NULL_CHECK_FIELD", NORMAL_PRIORITY).addClass(this)
.addMethod(this).addField(syncField).addSourceLine(this);
bugReporter.reportBug(bug);
} else {
currState = 0;
}
break;
default:
currState = 0;
}
}
Example 5
| Source File: FindNoSideEffectMethods.java From spotbugs with GNU Lesser General Public License v2.1 | 4 votes |
|
@Override
public void sawOpcode(int seen) {
if (!allowedFields.isEmpty() && seen == Const.PUTFIELD) {
Item objItem = getStack().getStackItem(1);
if (objItem.getRegisterNumber() == 0) {
if (allowedFields.contains(getFieldDescriptorOperand())) {
Item valueItem = getStack().getStackItem(0);
if (!isNew(valueItem) && !valueItem.isNull()) {
allowedFields.remove(getFieldDescriptorOperand());
}
}
}
}
if (status == SideEffectStatus.SIDE_EFFECT && allowedFields.isEmpty()) {
// Nothing to do: skip the rest of the method
throw new EarlyExitException();
}
if (status == SideEffectStatus.SIDE_EFFECT) {
return;
}
switch (seen) {
case Const.ASTORE:
case Const.ASTORE_0:
case Const.ASTORE_1:
case Const.ASTORE_2:
case Const.ASTORE_3:
if (finallyTargets.contains(getPC())) {
finallyExceptionRegisters.add(getRegisterOperand());
}
break;
case Const.ATHROW: {
Item exceptionItem = getStack().getStackItem(0);
if (!finallyExceptionRegisters.remove(exceptionItem.getRegisterNumber())) {
uselessVoidCandidate = false;
try {
JavaClass javaClass = exceptionItem.getJavaClass();
if (javaClass != null && ALLOWED_EXCEPTIONS.contains(javaClass.getClassName())) {
break;
}
} catch (ClassNotFoundException e) {
}
status = SideEffectStatus.SIDE_EFFECT;
}
break;
}
case Const.PUTSTATIC:
if (classInit) {
if (getClassConstantOperand().equals(getClassName())) {
break;
}
}
status = SideEffectStatus.SIDE_EFFECT;
break;
case Const.INVOKEDYNAMIC:
status = SideEffectStatus.SIDE_EFFECT;
break;
case Const.PUTFIELD:
sawCall(getMethodCall(FIELD_STORE_STUB_METHOD), false);
break;
case Const.AASTORE:
case Const.DASTORE:
case Const.CASTORE:
case Const.BASTORE:
case Const.IASTORE:
case Const.LASTORE:
case Const.FASTORE:
case Const.SASTORE:
sawCall(getMethodCall(ARRAY_STORE_STUB_METHOD), false);
break;
case Const.INVOKESTATIC:
if (changesOnlyNewObjects(getMethodDescriptorOperand())) {
break;
}
sawCall(new MethodCall(getMethodDescriptorOperand(), TARGET_OTHER), false);
break;
case Const.INVOKESPECIAL:
case Const.INVOKEINTERFACE:
case Const.INVOKEVIRTUAL: {
XMethod xMethodOperand = getXMethodOperand();
MethodDescriptor methodDescriptorOperand = xMethodOperand == null ? getMethodDescriptorOperand()
: xMethodOperand
.getMethodDescriptor();
if (changesOnlyNewObjects(getMethodDescriptorOperand())) {
break;
}
MethodCall methodCall = getMethodCall(methodDescriptorOperand);
sawCall(methodCall, false);
break;
}
default:
break;
}
}
