本文整理汇总了Java中org.apache.bcel.generic.NOP类的典型用法代码示例。如果您正苦于以下问题：Java NOP类的具体用法？Java NOP怎么用？Java NOP使用的例子？那么恭喜您, 这里精选的类代码示例或许可以为您提供帮助。
NOP类属于org.apache.bcel.generic包，在下文中一共展示了NOP类的4个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Java代码示例。
示例1: removeUnusedLocals
import org.apache.bcel.generic.NOP; //导入依赖的package包/类
void removeUnusedLocals(Method mOrig, MethodGen m) {
InstructionList il = m.getInstructionList();
InstructionHandle[] ins = il.getInstructionHandles();
for (int i = 0; i < ins.length; i++) {
Instruction in = ins[i].getInstruction();
if (in instanceof LocalVariableInstruction) {
LocalVariableInstruction curr = (LocalVariableInstruction) in;
if (mtab.getLocal(m, curr, ins[i].getPosition()) != null
&& curr.getIndex() < m.getMaxLocals() - 5
&& !mtab.isLocalUsedInInlet(mOrig, curr.getIndex())) {
if (curr instanceof IINC) {
ins[i].setInstruction(new NOP());
} else if (curr instanceof LSTORE || curr instanceof DSTORE) {
ins[i].setInstruction(new POP2());
} else if (curr instanceof StoreInstruction) {
ins[i].setInstruction(new POP());
} else if (curr instanceof ALOAD) {
ins[i].setInstruction(new ACONST_NULL());
} else if (curr instanceof FLOAD) {
ins[i].setInstruction(new FCONST((float) 0.0));
} else if (curr instanceof ILOAD) {
ins[i].setInstruction(new ICONST(0));
} else if (curr instanceof DLOAD) {
ins[i].setInstruction(new DCONST(0.0));
} else if (curr instanceof LLOAD) {
ins[i].setInstruction(new LCONST(0L));
} else {
System.out.println("unhandled ins in "
+ "removeUnusedLocals: " + curr);
System.exit(1);
}
}
}
}
}
示例2: getPreviousInstruction
import org.apache.bcel.generic.NOP; //导入依赖的package包/类
private @CheckForNull
InstructionHandle getPreviousInstruction(InstructionHandle handle, boolean skipNops) {
while (handle.getPrev() != null) {
handle = handle.getPrev();
Instruction prevIns = handle.getInstruction();
if (!(prevIns instanceof NOP && skipNops)) {
return handle;
}
}
return null;
}
示例3: build
import org.apache.bcel.generic.NOP; //导入依赖的package包/类
public void build() throws CFGBuilderException {
InstructionList instructionList = methodGen.getInstructionList();
optimize(instructionList);
topLevelSubroutine = new Subroutine(instructionList.getStart());
subroutineWorkList.add(topLevelSubroutine);
// Build top level subroutine and all JSR subroutines
while (!subroutineWorkList.isEmpty()) {
Subroutine subroutine = subroutineWorkList.removeFirst();
if (DEBUG)
System.out.println("Starting subroutine " + subroutine.getStartInstruction());
build(subroutine);
}
// Inline everything into the top level subroutine
cfg = inlineAll();
// Add a NOP instruction to the entry block.
// This allows analyses to construct a Location
// representing the entry to the method.
BasicBlock entryBlock = cfg.getEntry();
InstructionList il = new InstructionList();
entryBlock.addInstruction(il.append(new NOP()));
if (VERIFY_INTEGRITY)
cfg.checkIntegrity();
if (true) {
cfg.checkIntegrity();
}
}
示例4: createInstructionNop
import org.apache.bcel.generic.NOP; //导入依赖的package包/类
@SuppressWarnings("unused")
// Called using reflection
private Instruction createInstructionNop(Element inst) {
return new NOP();
}