/**
* Creates a public setter method. The setter method assigns the value of the first parameter to
* the specified field in the class to which this method is added. The created method is not
* static even if the field is static. You may not change it to be static by <code>setModifiers()
* </code> in <code>CtBehavior</code>.
*
* @param methodName the name of the setter
* @param field the field accessed.
*/
public static CtMethod setter(String methodName, CtField field) throws CannotCompileException {
FieldInfo finfo = field.getFieldInfo2();
String fieldType = finfo.getDescriptor();
String desc = "(" + fieldType + ")V";
ConstPool cp = finfo.getConstPool();
MethodInfo minfo = new MethodInfo(cp, methodName, desc);
minfo.setAccessFlags(AccessFlag.PUBLIC);
Bytecode code = new Bytecode(cp, 3, 3);
try {
String fieldName = finfo.getName();
if ((finfo.getAccessFlags() & AccessFlag.STATIC) == 0) {
code.addAload(0);
code.addLoad(1, field.getType());
code.addPutfield(Bytecode.THIS, fieldName, fieldType);
} else {
code.addLoad(1, field.getType());
code.addPutstatic(Bytecode.THIS, fieldName, fieldType);
}
code.addReturn(null);
} catch (NotFoundException e) {
throw new CannotCompileException(e);
}
minfo.setCodeAttribute(code.toCodeAttribute());
return new CtMethod(minfo, field.getDeclaringClass());
}
public String apply(StaticFieldDescriptor from) {
// this is quite simple. First we create a proxy
String proxyName = ProxyDefinitionStore.getProxyName();
ClassFile proxy = new ClassFile(false, proxyName, "java.lang.Object");
ClassDataStore.instance().registerProxyName(from.getClazz(), proxyName);
proxy.setAccessFlags(AccessFlag.PUBLIC);
FieldInfo newField =
new FieldInfo(proxy.getConstPool(), from.getName(), from.getDescriptor());
newField.setAccessFlags(AccessFlag.PUBLIC | AccessFlag.STATIC);
if (from.getSigniture() != null) {
SignatureAttribute sig =
new SignatureAttribute(proxy.getConstPool(), from.getSigniture());
newField.addAttribute(sig);
}
try {
proxy.addField(newField);
ByteArrayOutputStream bytes = new ByteArrayOutputStream();
DataOutputStream dos = new DataOutputStream(bytes);
try {
proxy.write(dos);
} catch (IOException e) {
throw new RuntimeException(e);
}
ProxyDefinitionStore.saveProxyDefinition(
from.getClazz().getClassLoader(), proxyName, bytes.toByteArray());
} catch (DuplicateMemberException e) {
// can't happen
}
return proxyName;
}
@Override
protected void doInjection(String value) {
final FieldInfo ctFieldInfo = ctField.getFieldInfo();
ctFieldInfo.addAttribute(
new ConstantAttribute(
ctFieldInfo.getConstPool(), ctFieldInfo.getConstPool().addStringInfo(value)));
}
public BaseClassData(ClassFile file, ClassLoader loader, boolean replaceable) {
className = file.getName();
this.replaceable = replaceable;
internalName = Descriptor.toJvmName(file.getName());
this.loader = loader;
superClassName = file.getSuperclass();
boolean finalMethod = false;
Set<MethodData> meths = new HashSet<MethodData>();
for (Object o : file.getMethods()) {
String methodClassName = className;
MethodInfo m = (MethodInfo) o;
MemberType type = MemberType.NORMAL;
if ((m.getDescriptor().equals(Constants.ADDED_METHOD_DESCRIPTOR)
&& m.getName().equals(Constants.ADDED_METHOD_NAME))
|| (m.getDescriptor().equals(Constants.ADDED_STATIC_METHOD_DESCRIPTOR)
&& m.getName().equals(Constants.ADDED_STATIC_METHOD_NAME))
|| (m.getDescriptor().equals(Constants.ADDED_CONSTRUCTOR_DESCRIPTOR))) {
type = MemberType.ADDED_SYSTEM;
} else if (m.getAttribute(Constants.FINAL_METHOD_ATTRIBUTE) != null) {
finalMethod = true;
}
MethodData md =
new MethodData(
m.getName(),
m.getDescriptor(),
methodClassName,
type,
m.getAccessFlags(),
finalMethod);
meths.add(md);
}
this.methods = Collections.unmodifiableSet(meths);
Set<FieldData> fieldData = new HashSet<FieldData>();
for (Object o : file.getFields()) {
FieldInfo m = (FieldInfo) o;
MemberType mt = MemberType.NORMAL;
fieldData.add(new FieldData(m, mt, className, m.getAccessFlags()));
}
this.fields = Collections.unmodifiableSet(fieldData);
}