Java Code Examples for org.apache.bcel.Const#ARETURN
The following examples show how to use
org.apache.bcel.Const#ARETURN .
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Example 1
| Source File: PreferZeroLengthArrays.java From spotbugs with GNU Lesser General Public License v2.1 | 6 votes |
|
@Override
public void sawOpcode(int seen) {
switch (seen) {
case Const.ACONST_NULL:
nullOnTOS = true;
return;
case Const.ARETURN:
if (nullOnTOS) {
SourceLineAnnotation sourceLineAnnotation = SourceLineAnnotation.fromVisitedInstruction(getClassContext(), this,
getPC());
if (sourceLineAnnotation != null) {
found.add(sourceLineAnnotation);
}
}
break;
default:
break;
}
nullOnTOS = false;
}
Example 2
| Source File: ReturnInstruction.java From commons-bcel with Apache License 2.0 | 6 votes |
|
public Type getType() {
final short _opcode = super.getOpcode();
switch (_opcode) {
case Const.IRETURN:
return Type.INT;
case Const.LRETURN:
return Type.LONG;
case Const.FRETURN:
return Type.FLOAT;
case Const.DRETURN:
return Type.DOUBLE;
case Const.ARETURN:
return Type.OBJECT;
case Const.RETURN:
return Type.VOID;
default: // Never reached
throw new ClassGenException("Unknown type " + _opcode);
}
}
Example 3
| Source File: DismantleBytecode.java From spotbugs with GNU Lesser General Public License v2.1 | 5 votes |
|
public boolean isReturn(int opcode) {
switch (opcode) {
case Const.IRETURN:
case Const.ARETURN:
case Const.LRETURN:
case Const.DRETURN:
case Const.FRETURN:
case Const.RETURN:
return true;
default:
return false;
}
}
Example 4
| Source File: Noise.java From spotbugs with GNU Lesser General Public License v2.1 | 4 votes |
|
@Override
public void sawOpcode(int seen) {
int priority;
switch (seen) {
case Const.INVOKEINTERFACE:
case Const.INVOKEVIRTUAL:
case Const.INVOKESPECIAL:
case Const.INVOKESTATIC:
hq.pushHash(getClassConstantOperand());
if (getNameConstantOperand().indexOf('$') == -1) {
hq.pushHash(getNameConstantOperand());
}
hq.pushHash(getSigConstantOperand());
priority = hq.getPriority();
if (priority <= Priorities.LOW_PRIORITY) {
accumulator.accumulateBug(new BugInstance(this, "NOISE_METHOD_CALL", priority).addClassAndMethod(this)
.addCalledMethod(this), this);
}
break;
case Const.GETFIELD:
case Const.PUTFIELD:
case Const.GETSTATIC:
case Const.PUTSTATIC:
hq.pushHash(getClassConstantOperand());
if (getNameConstantOperand().indexOf('$') == -1) {
hq.pushHash(getNameConstantOperand());
}
hq.pushHash(getSigConstantOperand());
priority = hq.getPriority();
if (priority <= Priorities.LOW_PRIORITY) {
accumulator.accumulateBug(new BugInstance(this, "NOISE_FIELD_REFERENCE", priority).addClassAndMethod(this)
.addReferencedField(this), this);
}
break;
case Const.CHECKCAST:
case Const.INSTANCEOF:
case Const.NEW:
hq.pushHash(getClassConstantOperand());
break;
case Const.IFEQ:
case Const.IFNE:
case Const.IFNONNULL:
case Const.IFNULL:
case Const.IF_ICMPEQ:
case Const.IF_ICMPNE:
case Const.IF_ICMPLE:
case Const.IF_ICMPGE:
case Const.IF_ICMPGT:
case Const.IF_ICMPLT:
case Const.IF_ACMPEQ:
case Const.IF_ACMPNE:
case Const.RETURN:
case Const.ARETURN:
case Const.IRETURN:
case Const.MONITORENTER:
case Const.MONITOREXIT:
case Const.IINC:
case Const.NEWARRAY:
case Const.TABLESWITCH:
case Const.LOOKUPSWITCH:
case Const.LCMP:
case Const.INEG:
case Const.IADD:
case Const.IMUL:
case Const.ISUB:
case Const.IDIV:
case Const.IREM:
case Const.IXOR:
case Const.ISHL:
case Const.ISHR:
case Const.IUSHR:
case Const.IAND:
case Const.IOR:
case Const.LAND:
case Const.LOR:
case Const.LADD:
case Const.LMUL:
case Const.LSUB:
case Const.LDIV:
case Const.LSHL:
case Const.LSHR:
case Const.LUSHR:
case Const.AALOAD:
case Const.AASTORE:
case Const.IALOAD:
case Const.IASTORE:
case Const.BALOAD:
case Const.BASTORE:
hq.push(seen);
priority = hq.getPriority();
if (priority <= Priorities.LOW_PRIORITY) {
accumulator.accumulateBug(
new BugInstance(this, "NOISE_OPERATION", priority).addClassAndMethod(this).addString(Const.getOpcodeName(seen)),
this);
}
break;
default:
break;
}
}
Example 5
| Source File: TypeReturnNull.java From spotbugs with GNU Lesser General Public License v2.1 | 4 votes |
|
@Override
public void sawOpcode(int seen) {
if (seen == Const.ARETURN && getPrevOpcode(1) == Const.ACONST_NULL) {
accumulateBug();
}
}
Example 6
| Source File: UselessSubclassMethod.java From spotbugs with GNU Lesser General Public License v2.1 | 4 votes |
|
@Override
public void sawOpcode(int seen) {
switch (state) {
case SEEN_NOTHING:
if (seen == Const.ALOAD_0) {
argTypes = Type.getArgumentTypes(this.getMethodSig());
curParm = 0;
curParmOffset = 1;
if (argTypes.length > 0) {
state = State.SEEN_PARM;
} else {
state = State.SEEN_LAST_PARM;
}
} else {
state = State.SEEN_INVALID;
}
break;
case SEEN_PARM:
if (curParm >= argTypes.length) {
state = State.SEEN_INVALID;
} else {
String signature = argTypes[curParm++].getSignature();
char typeChar0 = signature.charAt(0);
if ((typeChar0 == 'L') || (typeChar0 == '[')) {
checkParm(seen, Const.ALOAD_0, Const.ALOAD, 1);
} else if (typeChar0 == 'D') {
checkParm(seen, Const.DLOAD_0, Const.DLOAD, 2);
} else if (typeChar0 == 'F') {
checkParm(seen, Const.FLOAD_0, Const.FLOAD, 1);
} else if (typeChar0 == 'I' || typeChar0 == 'Z' || typeChar0 == 'S' || typeChar0 == 'C') {
checkParm(seen, Const.ILOAD_0, Const.ILOAD, 1);
} else if (typeChar0 == 'J') {
checkParm(seen, Const.LLOAD_0, Const.LLOAD, 2);
} else {
state = State.SEEN_INVALID;
}
if ((state != State.SEEN_INVALID) && (curParm >= argTypes.length)) {
state = State.SEEN_LAST_PARM;
}
}
break;
case SEEN_LAST_PARM:
if ((seen == Const.INVOKENONVIRTUAL) && getMethodName().equals(getNameConstantOperand())
&& getMethodSig().equals(getSigConstantOperand())) {
invokePC = getPC();
state = State.SEEN_INVOKE;
} else {
state = State.SEEN_INVALID;
}
break;
case SEEN_INVOKE:
Type returnType = getMethod().getReturnType();
char retSigChar0 = returnType.getSignature().charAt(0);
if ((retSigChar0 == 'V') && (seen == Const.RETURN)) {
state = State.SEEN_RETURN;
} else if (((retSigChar0 == 'L') || (retSigChar0 == '[')) && (seen == Const.ARETURN)) {
state = State.SEEN_RETURN;
} else if ((retSigChar0 == 'D') && (seen == Const.DRETURN)) {
state = State.SEEN_RETURN;
} else if ((retSigChar0 == 'F') && (seen == Const.FRETURN)) {
state = State.SEEN_RETURN;
} else if ((retSigChar0 == 'I' || retSigChar0 == 'S' || retSigChar0 == 'C' || retSigChar0 == 'B' || retSigChar0 == 'Z')
&& (seen == Const.IRETURN)) {
state = State.SEEN_RETURN;
} else if ((retSigChar0 == 'J') && (seen == Const.LRETURN)) {
state = State.SEEN_RETURN;
} else {
state = State.SEEN_INVALID;
}
break;
case SEEN_RETURN:
state = State.SEEN_INVALID;
break;
default:
break;
}
}
Example 7
| Source File: FindNoSideEffectMethods.java From spotbugs with GNU Lesser General Public License v2.1 | 4 votes |
|
@Override
public void visit(Code obj) {
uselessVoidCandidate = !classInit && !constructor && !getXMethod().isSynthetic() && Type.getReturnType(getMethodSig()) == Type.VOID;
byte[] code = obj.getCode();
if (code.length == 4 && (code[0] & 0xFF) == Const.GETSTATIC && (code[3] & 0xFF) == Const.ARETURN) {
getStaticMethods.add(getMethodDescriptor());
handleStatus();
return;
}
if (code.length <= 2 && !getXMethod().isStatic() && (getXMethod().isPublic() || getXMethod().isProtected())
&& !getXMethod().isFinal() && (getXClass().isPublic() || getXClass().isProtected())) {
for (byte[] stubMethod : STUB_METHODS) {
if (Arrays.equals(stubMethod, code)
&& (getClassName().endsWith("Visitor") || getClassName().endsWith("Listener") || !hasOtherImplementations(getXMethod()))) {
// stub method which can be extended: assume it can be extended with possible side-effect
status = SideEffectStatus.SIDE_EFFECT;
handleStatus();
return;
}
}
}
if (statusMap.containsKey(getMethodDescriptor())) {
return;
}
finallyTargets = new HashSet<>();
for (CodeException ex : getCode().getExceptionTable()) {
if (ex.getCatchType() == 0) {
finallyTargets.add(ex.getHandlerPC());
}
}
finallyExceptionRegisters = new HashSet<>();
try {
super.visit(obj);
} catch (EarlyExitException e) {
// Ignore
}
if (uselessVoidCandidate && code.length > 1
&& (status == SideEffectStatus.UNSURE || status == SideEffectStatus.NO_SIDE_EFFECT)) {
uselessVoidCandidates.add(getMethodDescriptor());
}
handleStatus();
}
