/**
* Checks a given class
*
* @param cr a <code>ClassReader</code> that contains bytecode for the analysis.
* @param loader a <code>ClassLoader</code> which will be used to load referenced classes. This is
* useful if you are verifiying multiple interdependent classes.
* @param dump true if bytecode should be printed out not only when errors are found.
* @param pw write where results going to be printed
*/
public static void verify(
final ClassReader cr, final ClassLoader loader, final boolean dump, final PrintWriter pw) {
ClassNode cn = new ClassNode();
cr.accept(new CheckClassAdapter(cn, false), ClassReader.SKIP_DEBUG);
Type syperType = cn.superName == null ? null : Type.getObjectType(cn.superName);
List methods = cn.methods;
List interfaces = new ArrayList();
for (Iterator i = cn.interfaces.iterator(); i.hasNext(); ) {
interfaces.add(Type.getObjectType(i.next().toString()));
}
for (int i = 0; i < methods.size(); ++i) {
MethodNode method = (MethodNode) methods.get(i);
SimpleVerifier verifier =
new SimpleVerifier(Type.getObjectType(cn.name), syperType, interfaces, false);
Analyzer a = new Analyzer(verifier);
if (loader != null) {
verifier.setClassLoader(loader);
}
try {
a.analyze(cn.name, method);
if (!dump) {
continue;
}
} catch (Exception e) {
e.printStackTrace(pw);
}
printAnalyzerResult(method, a, pw);
}
pw.flush();
}
static void printAnalyzerResult(MethodNode method, Analyzer a, final PrintWriter pw) {
Frame[] frames = a.getFrames();
TraceMethodVisitor mv = new TraceMethodVisitor();
pw.println(method.name + method.desc);
for (int j = 0; j < method.instructions.size(); ++j) {
method.instructions.get(j).accept(mv);
StringBuffer s = new StringBuffer();
Frame f = frames[j];
if (f == null) {
s.append('?');
} else {
for (int k = 0; k < f.getLocals(); ++k) {
s.append(getShortName(f.getLocal(k).toString())).append(' ');
}
s.append(" : ");
for (int k = 0; k < f.getStackSize(); ++k) {
s.append(getShortName(f.getStack(k).toString())).append(' ');
}
}
while (s.length() < method.maxStack + method.maxLocals + 1) {
s.append(' ');
}
pw.print(Integer.toString(j + 100000).substring(1));
pw.print(" " + s + " : " + mv.buf); // mv.text.get(j));
}
for (int j = 0; j < method.tryCatchBlocks.size(); ++j) {
((TryCatchBlockNode) method.tryCatchBlocks.get(j)).accept(mv);
pw.print(" " + mv.buf);
}
pw.println();
}
