Examples with ClassFile javassist.bytecode.ClassFile used on opensource projects

Example 21 with ClassFile

use of javassist.bytecode.ClassFile in project javassist-maven-plugin by icon-Systemhaus-GmbH.

the class JavassistTransformerExecutorTestBase method stampedClass.

protected CtClass stampedClass(final String className, final CtClass ctClass) throws CannotCompileException, NotFoundException {
    expect(ctClass.getDeclaredField(startsWith(STAMP_FIELD_NAME))).andReturn(null);
    // real stamping
    expect(ctClass.isInterface()).andReturn(false);
    expect(ctClass.getClassFile2()).andReturn(new ClassFile(false, className, null));
    expect(ctClass.isFrozen()).andReturn(false);
    expect(ctClass.getName()).andReturn(className).anyTimes();
    ctClass.addField(anyObject(CtField.class), anyObject(CtField.Initializer.class));
    return ctClass;
}

Example 22 with ClassFile

use of javassist.bytecode.ClassFile in project javassist-maven-plugin by icon-Systemhaus-GmbH.

the class TestJavassistTransformerExecuter method applyStamp_on_Interface.

@Test
public void applyStamp_on_Interface() throws CannotCompileException, NotFoundException {
    // given
    final String className = "test.TestClass";
    final CtClass candidateClass = mock("candidateClass", CtClass.class);
    final Capture<CtField> fieldCaptures = newInstance();
    // createStampField
    expect(candidateClass.isInterface()).andReturn(true);
    expect(candidateClass.getClassPool()).andReturn(classPool).anyTimes();
    expect(candidateClass.getClassFile2()).andReturn(new ClassFile(false, className, null));
    expect(candidateClass.isFrozen()).andReturn(false);
    expect(candidateClass.getName()).andReturn(className).anyTimes();
    candidateClass.addField(capture(fieldCaptures), anyObject(CtField.Initializer.class));
    replay(candidateClass, classPool);
    // when
    sut.applyStamp(candidateClass);
    // then
    verify(candidateClass, classPool);
    assertThat("generated stamp field starts with the constant prefix.", fieldCaptures.getValue().getName(), org.hamcrest.core.StringStartsWith.startsWith(JavassistTransformerExecutor.STAMP_FIELD_NAME));
    assertThat("generated stamp field must have the right modifiers.", fieldCaptures.getValue().getModifiers(), is(STATIC | FINAL | PUBLIC));
    assertThat("generated stamp field is a boolean.", fieldCaptures.getValue().getType(), is(booleanType));
}

Example 23 with ClassFile

use of javassist.bytecode.ClassFile in project newton by muoncore.

the class EnableNewtonRegistrar method makeRepo.

private Class makeRepo(Class param) {
    ClassPool defaultClassPool = ClassPool.getDefault();
    defaultClassPool.appendClassPath(new LoaderClassPath(param.getClassLoader()));
    defaultClassPool.appendClassPath(new LoaderClassPath(MuonEventSourceRepository.class.getClassLoader()));
    defaultClassPool.appendSystemPath();
    try {
        CtClass superInterface = defaultClassPool.getCtClass(MuonEventSourceRepository.class.getName());
        String repoName = param.getName() + "Repository";
        try {
            return Class.forName(repoName);
        } catch (ClassNotFoundException e) {
            CtClass repositoryInterface = defaultClassPool.makeClass(repoName, superInterface);
            ClassFile classFile = repositoryInterface.getClassFile();
            String sig = "Ljava/lang/Object;Lio/muoncore/newton/eventsource/muon/MuonEventSourceRepository<L" + getSigName(param) + ";>;";
            SignatureAttribute signatureAttribute = new SignatureAttribute(classFile.getConstPool(), sig);
            classFile.addAttribute(signatureAttribute);
            return repositoryInterface.toClass();
        }
    } catch (NotFoundException | CannotCompileException e) {
        log.error("Unable to register a newton repository", e);
    }
    return null;
}

Example 24 with ClassFile

use of javassist.bytecode.ClassFile in project OpenTripPlanner by opentripplanner.

the class ClassCustomizer method addDoubleField.

/**
 * Adds a new field of type double to the customized class
 */
public void addDoubleField(String fieldName) {
    // FIXME: this should support default values but does not
    ClassFile classFile = ctClass.getClassFile();
    ConstPool constPool = classFile.getConstPool();
    try {
        // add field
        FieldInfo fieldInfo = new FieldInfo(constPool, fieldName, "D");
        classFile.addField(fieldInfo);
        CtConstructor ctor = CtNewConstructor.defaultConstructor(ctClass);
        ctClass.addConstructor(ctor);
        addDoubleSetter(classFile, fieldName);
        addDoubleGetter(classFile, fieldName);
    } catch (Exception e) {
        throw new RuntimeException(e);
    }
}

Example 25 with ClassFile

use of javassist.bytecode.ClassFile in project OpenTripPlanner by opentripplanner.

the class ClassCustomizer method saveClass.

/**
 * Writes the class file to the classpath and returns a class object
 */
public Class<?> saveClass() {
    ClassFile classFile = ctClass.getClassFile();
    try {
        if (!extraClassPath.exists()) {
            extraClassPath.mkdirs();
        }
        FactoryHelper.writeFile(classFile, extraClassPath.getPath());
        ClassLoader loader = getClass().getClassLoader();
        Class<?> cls = FactoryHelper.toClass(classFile, loader);
        return cls;
    // load class
    } catch (Exception e) {
        throw new RuntimeException(e);
    }
}