protected Map<Statement, Double> buildCodeFragmentFor(CtType cl, Coverage coverage) {
Factory factory = cl.getFactory();
Map<Statement, Double> codeFragments = new LinkedHashMap<>();
for (CtMethod<?> mth : (Set<CtMethod>) cl.getMethods()) {
if (!mth.getModifiers().contains(ModifierKind.ABSTRACT)
&& !mth.getModifiers().contains(ModifierKind.PRIVATE)) {
// && getCoverageForMethod(coverage, cl, mth) != 1.0) {
CtExecutableReference executableRef = factory.Executable().createReference(mth);
executableRef.setStatic(mth.getModifiers().contains(ModifierKind.STATIC));
CtInvocation invocation =
factory.Code().createInvocation(buildVarRef(cl.getReference(), factory), executableRef);
invocation.setArguments(
mth.getParameters()
.stream()
.map(param -> buildVarRef(param.getType(), factory))
.collect(Collectors.toList()));
invocation.setType(mth.getType());
Statement stmt = new Statement(invocation);
codeFragments.put(stmt, getCoverageForMethod(coverage, cl, mth));
}
}
return codeFragments;
}
private static CtMethod delegator0(CtMethod delegate, CtClass declaring)
throws CannotCompileException, NotFoundException {
MethodInfo deleInfo = delegate.getMethodInfo2();
String methodName = deleInfo.getName();
String desc = deleInfo.getDescriptor();
ConstPool cp = declaring.getClassFile2().getConstPool();
MethodInfo minfo = new MethodInfo(cp, methodName, desc);
minfo.setAccessFlags(deleInfo.getAccessFlags());
ExceptionsAttribute eattr = deleInfo.getExceptionsAttribute();
if (eattr != null) minfo.setExceptionsAttribute((ExceptionsAttribute) eattr.copy(cp, null));
Bytecode code = new Bytecode(cp, 0, 0);
boolean isStatic = Modifier.isStatic(delegate.getModifiers());
CtClass deleClass = delegate.getDeclaringClass();
CtClass[] params = delegate.getParameterTypes();
int s;
if (isStatic) {
s = code.addLoadParameters(params, 0);
code.addInvokestatic(deleClass, methodName, desc);
} else {
code.addLoad(0, deleClass);
s = code.addLoadParameters(params, 1);
code.addInvokespecial(deleClass, methodName, desc);
}
code.addReturn(delegate.getReturnType());
code.setMaxLocals(++s);
code.setMaxStack(s < 2 ? 2 : s); // for a 2-word return value
minfo.setCodeAttribute(code.toCodeAttribute());
return new CtMethod(minfo, declaring);
}
private Object[] extractParams(Mapping mapping, HttpServletRequest request) {
Object[] params;
ClassPool pool = ClassPool.getDefault();
pool.insertClassPath(new ClassClassPath(mapping.clazz));
CtMethod cm = null;
CtClass[] parameterTypes = new CtClass[0];
try {
cm = pool.get(mapping.clazz.getName()).getDeclaredMethod(mapping.method.getName());
parameterTypes = cm.getParameterTypes();
} catch (NotFoundException e) {
e.printStackTrace();
}
if (0 == parameterTypes.length) return new Object[0];
params = new Object[parameterTypes.length];
LocalVariableAttribute attr =
(LocalVariableAttribute)
cm.getMethodInfo().getCodeAttribute().getAttribute(LocalVariableAttribute.tag);
int pos = Modifier.isStatic(cm.getModifiers()) ? 0 : 1;
for (int i = 0; i < params.length; i++) {
String name = attr.variableName(i + pos);
String typeName = parameterTypes[i].getName();
Binder binder = Binder.valueOf(typeName);
Object param = binder.get(name, request, mapping);
params[i] = param;
}
return params;
}
private void preprocessMethods(CtClass cc, boolean insertLoad, boolean wrapFieldAccess)
throws CannotCompileException {
CtMethod[] methods = cc.getDeclaredMethods();
for (int i = 0; i < methods.length; i++) {
CtMethod m = methods[i];
if (wrapFieldAccess) {
m.instrument(
new ExprEditor() {
public void edit(FieldAccess fa) throws CannotCompileException {
try {
if ((fa.getField().getModifiers() & (Modifier.TRANSIENT | Modifier.STATIC)) == 0
&& fa.getField().getDeclaringClass().subtypeOf(persistentInterface)) {
if (fa.isWriter()) {
fa.replace("{ $0.loadAndModify(); $proceed($$); }");
}
// isSelfReader is my extension of JAssist, if you
// use original version of JAssist comment the
// branch below or replace "else if" with "else".
// In first case Perst will not be able to handle
// access to foreign (non-this) fields. You should use
// getter/setter methods instead.
// In second case access to foreign fields still will be possible,
// but with significant degradation of performance and
// increased code size, because in this case before ALL access
// to fields of persistent capable object call of load() method
// will be inserted.
else if (!fa.isSelfReader()) {
fa.replace("{ $0.load(); $_ = $proceed($$); }");
}
}
} catch (NotFoundException x) {
}
}
});
}
if (insertLoad
&& !"recursiveLoading".equals(m.getName())
&& (m.getModifiers() & (Modifier.STATIC | Modifier.ABSTRACT)) == 0) {
m.insertBefore("load();");
}
}
}
