Examples with ClassPool javassist.ClassPool used on opensource projects

Example 11 with ClassPool

use of javassist.ClassPool in project pinpoint by naver.

the class JavassistVerifyErrorTest method bug_regression_BytecodeVerifyError_Invalid_StackMapFrame.

/**
     * bug id
     * https://github.com/naver/pinpoint/issues/1807
     * @throws Exception
     */
@Ignore("fixed Javassist 3.21.0-GA")
@Test
public void bug_regression_BytecodeVerifyError_Invalid_StackMapFrame() throws Exception {
    CustomURLClassLoader classLoader = new CustomURLClassLoader(new URL[] {}, Thread.currentThread().getContextClassLoader());
    ClassPool classPool = new ClassPool(true);
    classPool.appendClassPath(new LoaderClassPath(classLoader));
    final CtClass ctClass = classPool.get(INVALID_STACK_MAP_FRAME);
    final CtMethod method = ctClass.getDeclaredMethod("bytecodeVerifyError");
    method.addLocalVariable("test_localVariable", CtClass.intType);
    method.insertBefore("{ test_localVariable = 1; }");
    final byte[] bytecode = ctClass.toBytecode();
    classLoader.defineClass0(INVALID_STACK_MAP_FRAME, bytecode);
    try {
        Class.forName(INVALID_STACK_MAP_FRAME, true, classLoader);
        Assert.fail("VerifyError");
    } catch (VerifyError e) {
        logger.debug("verifyError:{}", e.getMessage(), e);
    }
    final ASMBytecodeDisassembler bytecodeDisassembler = new ASMBytecodeDisassembler();
    final String dumpBytecode = bytecodeDisassembler.dumpBytecode(bytecode);
    logger.debug("dumpBytecode:{}", dumpBytecode);
    //        javassist bug : invalid stack map frame
    //        00013 InvalidStackMapFrame ArrayList String Iterator I  :  :    FRAME FULL [bug_regression_jdk7/javassist/InvalidStackMapFrame java/util/ArrayList [[[java/lang/Object->[Ljava/lang/String;]]] java/util/Iterator T T T I] []
    final String verify = bytecodeDisassembler.dumpVerify(bytecode, classLoader);
    logger.debug("dumpVerify:{}", verify);
    final String dumpAsm = bytecodeDisassembler.dumpASM(bytecode);
    logger.debug("dumpAsm :{}", dumpAsm);
}

Example 12 with ClassPool

use of javassist.ClassPool in project powermock by powermock.

the class ClassMockTransformerTest method shouldIgnoreCallToSyntheticField.

@Test
public void shouldIgnoreCallToSyntheticField() throws Throwable {
    final ClassPool classPool = new ClassPool(true);
    CtClass ctClass = prepareClassesForFieldTests(classPool);
    new ClassMockTransformer().transform(ctClass);
    runTestWithNewClassLoader(classPool, ShouldIgnoreCallToSyntheticField.class.getName());
}

Example 13 with ClassPool

use of javassist.ClassPool in project powermock by powermock.

the class ClassMockTransformerTest method shouldModifyBridgeMethods.

@Test
public void shouldModifyBridgeMethods() throws Throwable {
    final ClassPool classPool = new ClassPool(true);
    addCallInterceptorToMockGateway(classPool);
    CtClass ctClass = classPool.get(SubclassWithBridgeMethod.class.getName());
    new ClassMockTransformer().transform(ctClass);
    runTestWithNewClassLoader(classPool, ShouldModifyBridgeMethods.class.getName());
}

Example 14 with ClassPool

use of javassist.ClassPool in project powermock by powermock.

the class ClassMockTransformerTest method shouldIgnoreCallToSyntheticNonBridgeMethods.

@Test
public void shouldIgnoreCallToSyntheticNonBridgeMethods() throws Throwable {
    final ClassPool classPool = new ClassPool(true);
    CtClass ctClass = prepareClassesForTest(classPool, "powermock.test.support.MainMockTransformerTestSupport.CallSpy.registerMethodCall($1);");
    new ClassMockTransformer().transform(ctClass);
    runTestWithNewClassLoader(classPool, ShouldIgnoreCallToSyntheticNonBridgeMethods.class.getName());
}

Example 15 with ClassPool

use of javassist.ClassPool in project ratpack by ratpack.

the class DescribingHandlers method describeTo.

public static void describeTo(Handler handler, StringBuilder stringBuilder) {
    Class<? extends Handler> clazz = handler.getClass();
    if (clazz.isAnonymousClass()) {
        ClassPool pool = ClassPool.getDefault();
        CtClass ctClass;
        try {
            ctClass = pool.get(clazz.getName());
            CtBehavior[] behaviors = ctClass.getDeclaredBehaviors();
            List<CtBehavior> withLineNumber = Arrays.asList(behaviors).stream().filter(input -> input.getMethodInfo().getLineNumber(0) > 0).sorted((o1, o2) -> Integer.valueOf(o1.getMethodInfo().getLineNumber(0)).compareTo(o2.getMethodInfo().getLineNumber(0))).collect(Collectors.toList());
            if (!withLineNumber.isEmpty()) {
                CtBehavior method = withLineNumber.get(0);
                int lineNumber = method.getMethodInfo().getLineNumber(0);
                ClassFile classFile = ctClass.getClassFile();
                String sourceFile = classFile.getSourceFile();
                if (lineNumber != -1 && sourceFile != null) {
                    stringBuilder.append("anonymous class ").append(clazz.getName()).append(" at approximately line ").append(lineNumber).append(" of ").append(sourceFile);
                    return;
                }
            }
        } catch (NotFoundException ignore) {
        // fall through
        }
    }
    stringBuilder.append(clazz.getName());
}