本文整理汇总了Java中scouter.javassist.bytecode.Opcode.RETURN属性的典型用法代码示例。如果您正苦于以下问题：Java Opcode.RETURN属性的具体用法？Java Opcode.RETURN怎么用？Java Opcode.RETURN使用的例子？那么, 这里精选的属性代码示例或许可以为您提供帮助。您也可以进一步了解该属性所在类scouter.javassist.bytecode.Opcode的用法示例。
在下文中一共展示了Opcode.RETURN属性的5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: isEmpty
/**
* Returns true if the constructor (or static initializer)
* is the default one. This method returns true if the constructor
* takes some arguments but it does not perform anything except
* calling <code>super()</code> (the no-argument constructor of
* the super class).
*/
public boolean isEmpty() {
CodeAttribute ca = getMethodInfo2().getCodeAttribute();
if (ca == null)
return false; // native or abstract??
// they are not allowed, though.
ConstPool cp = ca.getConstPool();
CodeIterator it = ca.iterator();
try {
int pos, desc;
int op0 = it.byteAt(it.next());
return op0 == Opcode.RETURN // empty static initializer
|| (op0 == Opcode.ALOAD_0
&& it.byteAt(pos = it.next()) == Opcode.INVOKESPECIAL
&& (desc = cp.isConstructor(getSuperclassName(),
it.u16bitAt(pos + 1))) != 0
&& "()V".equals(cp.getUtf8Info(desc))
&& it.byteAt(it.next()) == Opcode.RETURN
&& !it.hasNext());
}
catch (BadBytecode e) {}
return false;
}
示例2: atReturnStmnt2
protected final void atReturnStmnt2(ASTree result) throws CompileError {
int op;
if (result == null)
op = Opcode.RETURN;
else {
compileExpr(result);
if (arrayDim > 0)
op = ARETURN;
else {
int type = exprType;
if (type == DOUBLE)
op = DRETURN;
else if (type == FLOAT)
op = FRETURN;
else if (type == LONG)
op = LRETURN;
else if (isRefType(type))
op = ARETURN;
else
op = IRETURN;
}
}
for (ReturnHook har = returnHooks; har != null; har = har.next)
if (har.doit(bytecode, op)) {
hasReturned = true;
return;
}
bytecode.addOpcode(op);
hasReturned = true;
}
示例3: isEmpty
/**
* Returns true if the method body is empty, that is, <code>{}</code>.
* It also returns true if the method is an abstract method.
*/
public boolean isEmpty() {
CodeAttribute ca = getMethodInfo2().getCodeAttribute();
if (ca == null) // abstract or native
return (getModifiers() & Modifier.ABSTRACT) != 0;
CodeIterator it = ca.iterator();
try {
return it.hasNext() && it.byteAt(it.next()) == Opcode.RETURN
&& !it.hasNext();
}
catch (BadBytecode e) {}
return false;
}
示例4: makeDefaultBody
private static void makeDefaultBody(Bytecode b, CtClass type) {
int op;
int value;
if (type instanceof CtPrimitiveType) {
CtPrimitiveType pt = (CtPrimitiveType)type;
op = pt.getReturnOp();
if (op == Opcode.DRETURN)
value = Opcode.DCONST_0;
else if (op == Opcode.FRETURN)
value = Opcode.FCONST_0;
else if (op == Opcode.LRETURN)
value = Opcode.LCONST_0;
else if (op == Opcode.RETURN)
value = Opcode.NOP;
else
value = Opcode.ICONST_0;
}
else {
op = Opcode.ARETURN;
value = Opcode.ACONST_NULL;
}
if (value != Opcode.NOP)
b.addOpcode(value);
b.addOpcode(op);
}
示例5: doit
protected boolean doit(Bytecode b, int opcode) {
switch (opcode) {
case Opcode.RETURN :
jsrJmp(b);
break;
case ARETURN :
b.addAstore(getVar(1));
jsrJmp(b);
b.addAload(var);
break;
case IRETURN :
b.addIstore(getVar(1));
jsrJmp(b);
b.addIload(var);
break;
case LRETURN :
b.addLstore(getVar(2));
jsrJmp(b);
b.addLload(var);
break;
case DRETURN :
b.addDstore(getVar(2));
jsrJmp(b);
b.addDload(var);
break;
case FRETURN :
b.addFstore(getVar(1));
jsrJmp(b);
b.addFload(var);
break;
default :
throw new RuntimeException("fatal");
}
return false;
}