Example usage for org.objectweb.asm.commons Method Method

Introduction

In this page you can find the example usage for org.objectweb.asm.commons Method Method.

Prototype

public Method(final String name, final Type returnType, final Type[] argumentTypes) 

Source Link

Document

Constructs a new Method .

Usage

From source file:org.apache.commons.weaver.privilizer.ActionGenerator.java

License:Apache License

/**
 * Add fields and generate constructor./*from w  w  w.  j a v a  2 s .com*/
 */
private void init() {
    for (final Field field : fields) {
        visitField(field.access, field.name, field.type.getDescriptor(), null, null).visitEnd();
    }
    final Method init = new Method("<init>", Type.VOID_TYPE, helper.getArgumentTypes());

    final GeneratorAdapter mgen = new GeneratorAdapter(0, init, null, Privilizer.EMPTY_TYPE_ARRAY, this);

    mgen.visitCode();
    final Label begin = mgen.mark();

    // invoke super constructor
    mgen.loadThis();
    mgen.invokeConstructor(Type.getType(Object.class), Method.getMethod("void <init> ()"));
    // assign remaining fields

    int arg = 0;
    for (final Field field : fields) {
        mgen.loadThis();
        mgen.loadArg(arg++);
        mgen.putField(action, field.name, field.type);
    }
    mgen.returnValue();
    final Label end = mgen.mark();

    // declare local vars
    mgen.visitLocalVariable("this", action.getDescriptor(), null, begin, end, 0);
    arg = 1;
    for (final Field field : fields) {
        mgen.visitLocalVariable("arg" + arg, field.type.getDescriptor(), null, begin, end, arg++);
    }
    mgen.endMethod();
}

---

From source file:org.apache.commons.weaver.privilizer.PrivilizingVisitor.java

License:Apache License

/**
 * Generates the instructions to push onto the stack whether there is a
 * security manager available./* w  w w.  ja v a  2  s  .c om*/
 * @param mgen to control
 */
private static void checkSecurityManager(final GeneratorAdapter mgen) {
    final Label setFalse = new Label();
    final Label done = new Label();
    mgen.invokeStatic(Type.getType(System.class),
            new Method("getSecurityManager", Type.getType(SecurityManager.class), Privilizer.EMPTY_TYPE_ARRAY));
    mgen.ifNull(setFalse);
    mgen.push(true);
    mgen.goTo(done);
    mgen.mark(setFalse);
    mgen.push(false);
    mgen.mark(done);
}

---

From source file:org.apache.deltaspike.partialbean.impl.proxy.AsmProxyClassGenerator.java

License:Apache License

private static void defineConstructor(ClassWriter cw, Type proxyType, Type superType) {
    GeneratorAdapter mg = new GeneratorAdapter(Opcodes.ACC_PUBLIC,
            new Method("<init>", Type.VOID_TYPE, new Type[] {}), null, null, cw);

    mg.visitCode();/*ww  w . j  a va2  s .c o m*/

    // invoke super constructor
    mg.loadThis();
    mg.invokeConstructor(superType, Method.getMethod("void <init> ()"));
    mg.returnValue();
    mg.endMethod();

    mg.visitEnd();
}

---

From source file:org.apache.deltaspike.proxy.impl.AsmDeltaSpikeProxyClassGenerator.java

License:Apache License

private static void defineDefaultConstructor(ClassWriter cw, Type proxyType, Type superType) {
    GeneratorAdapter mg = new GeneratorAdapter(Opcodes.ACC_PUBLIC,
            new Method("<init>", Type.VOID_TYPE, new Type[] {}), null, null, cw);

    mg.visitCode();//from  w ww  .  ja  v a  2 s  .  c o m

    // invoke super constructor
    mg.loadThis();
    mg.invokeConstructor(superType, Method.getMethod("void <init> ()"));
    mg.returnValue();
    mg.endMethod();

    mg.visitEnd();
}

---

From source file:org.apache.deltaspike.proxy.impl.AsmDeltaSpikeProxyClassGenerator.java

License:Apache License

private static void defineSuperAccessorMethod(ClassWriter cw, java.lang.reflect.Method method, Type superType,
        String superAccessorMethodSuffix) {
    Method originalAsmMethod = Method.getMethod(method);
    Method newAsmMethod = new Method(method.getName() + superAccessorMethodSuffix,
            originalAsmMethod.getReturnType(), originalAsmMethod.getArgumentTypes());
    GeneratorAdapter mg = new GeneratorAdapter(Opcodes.ACC_PUBLIC, newAsmMethod, null, null, cw);

    mg.visitCode();/* w w w  .ja  v  a2s  .co  m*/

    // call super method
    mg.loadThis();
    mg.loadArgs();
    mg.visitMethodInsn(Opcodes.INVOKESPECIAL, superType.getInternalName(), method.getName(),
            Type.getMethodDescriptor(method), false);
    mg.returnValue();

    // finish the method
    mg.endMethod();
    mg.visitMaxs(10, 10);
    mg.visitEnd();
}

---

From source file:org.apache.deltaspike.proxy.impl.AsmProxyClassGenerator.java

License:Apache License

private static void defineDelegateInvocationHandlerConstructor(ClassWriter cw, Type proxyType, Type superType,
        Type delegateInvocationHandlerType) {
    GeneratorAdapter mg = new GeneratorAdapter(Opcodes.ACC_PUBLIC,
            new Method("<init>", Type.VOID_TYPE, new Type[] { delegateInvocationHandlerType }), null, null, cw);

    mg.visitCode();//from w  ww  .j a  va 2 s .  c o  m

    // invoke super constructor
    mg.loadThis();
    mg.invokeConstructor(superType, Method.getMethod("void <init> ()"));

    // set invocation handler
    mg.loadThis();
    mg.loadArg(0);
    mg.putField(proxyType, FIELDNAME_DELEGATE_INVOCATION_HANDLER, delegateInvocationHandlerType);

    mg.returnValue();
    mg.endMethod();

    mg.visitEnd();
}

---

From source file:org.apache.deltaspike.proxy.util.AsmProxyClassGenerator.java

License:Apache License

private static void defineDelegateInvocationHandlerConstructor(ClassWriter cw, Type proxyType, Type superType,
        Type invocationHandlerType) {
    GeneratorAdapter mg = new GeneratorAdapter(Opcodes.ACC_PUBLIC,
            new Method("<init>", Type.VOID_TYPE, new Type[] { invocationHandlerType }), null, null, cw);

    mg.visitCode();/*from  w  w w . j a  v a 2s .c  om*/

    // invoke super constructor
    mg.loadThis();
    mg.invokeConstructor(superType, Method.getMethod("void <init> ()"));

    // set invocation handler
    mg.loadThis();
    mg.loadArg(0);
    mg.putField(proxyType, FIELDNAME_DELEGATE_INVOCATION_HANDLER, invocationHandlerType);

    mg.returnValue();
    mg.endMethod();

    mg.visitEnd();
}

---

From source file:org.apache.twill.yarn.CustomClassLoader.java

License:Apache License

@Override
protected Class<?> findClass(String name) throws ClassNotFoundException {
    if (!CustomClassLoaderRunnable.GENERATED_CLASS_NAME.equals(name)) {
        return super.findClass(name);
    }//  w  w  w .ja va  2s . c  o m

    // Generate a class that look like this:
    //
    // public class Generated {
    //
    //   public void announce(ServiceAnnouncer announcer, String serviceName, int port) {
    //     announcer.announce(serviceName, port);
    //   }
    // }
    Type generatedClassType = Type
            .getObjectType(CustomClassLoaderRunnable.GENERATED_CLASS_NAME.replace('.', '/'));
    ClassWriter cw = new ClassWriter(ClassWriter.COMPUTE_FRAMES);
    cw.visit(Opcodes.V1_7, Opcodes.ACC_PUBLIC + Opcodes.ACC_FINAL, generatedClassType.getInternalName(), null,
            Type.getInternalName(Object.class), null);

    // Generate the default constructor, which just call super();
    Method constructor = new Method("<init>", Type.VOID_TYPE, new Type[0]);
    GeneratorAdapter mg = new GeneratorAdapter(Opcodes.ACC_PUBLIC, constructor, null, null, cw);
    mg.loadThis();
    mg.invokeConstructor(Type.getType(Object.class), constructor);
    mg.returnValue();
    mg.endMethod();

    // Generate the announce method
    Method announce = new Method("announce", Type.VOID_TYPE,
            new Type[] { Type.getType(ServiceAnnouncer.class), Type.getType(String.class), Type.INT_TYPE });
    mg = new GeneratorAdapter(Opcodes.ACC_PUBLIC, announce, null, null, cw);
    mg.loadArg(0);
    mg.loadArg(1);
    mg.loadArg(2);
    mg.invokeInterface(Type.getType(ServiceAnnouncer.class), new Method("announce",
            Type.getType(Cancellable.class), new Type[] { Type.getType(String.class), Type.INT_TYPE }));
    mg.pop();
    mg.returnValue();
    mg.endMethod();
    cw.visitEnd();

    byte[] byteCode = cw.toByteArray();
    return defineClass(CustomClassLoaderRunnable.GENERATED_CLASS_NAME, byteCode, 0, byteCode.length);
}

---

From source file:org.glowroot.agent.weaving.PluginClassRenamer.java

License:Apache License

private @Nullable Method hack(@Nullable Method method) {
    if (method == null) {
        return null;
    }//from   w w  w.  jav  a  2  s . c o m
    Type[] argumentTypes = method.getArgumentTypes();
    Type[] hackedArgumentTypes = new Type[argumentTypes.length];
    for (int i = 0; i < argumentTypes.length; i++) {
        hackedArgumentTypes[i] = hack(argumentTypes[i]);
    }
    return new Method(method.getName(), hack(method.getReturnType()), hackedArgumentTypes);
}

---

From source file:org.jboss.byteman.agent.adapter.RuleGeneratorAdapter.java

License:Open Source License

/**
 * Generates the instructions to box the top stack value. This value is
 * replaced by its boxed equivalent on top of the stack.
 *
 * @param type the type of the top stack value.
 */// w w  w. ja  va  2s  .co m
public void box(final Type type) {
    if (type.getSort() == Type.OBJECT || type.getSort() == Type.ARRAY) {
        return;
    }
    if (type == Type.VOID_TYPE) {
        push((String) null);
    } else {
        Type boxed = type;
        switch (type.getSort()) {
        case Type.BYTE:
            boxed = BYTE_TYPE;
            break;
        case Type.BOOLEAN:
            boxed = BOOLEAN_TYPE;
            break;
        case Type.SHORT:
            boxed = SHORT_TYPE;
            break;
        case Type.CHAR:
            boxed = CHARACTER_TYPE;
            break;
        case Type.INT:
            boxed = INTEGER_TYPE;
            break;
        case Type.FLOAT:
            boxed = FLOAT_TYPE;
            break;
        case Type.LONG:
            boxed = LONG_TYPE;
            break;
        case Type.DOUBLE:
            boxed = DOUBLE_TYPE;
            break;
        }
        newInstance(boxed);
        if (type.getSize() == 2) {
            // Pp -> Ppo -> oPpo -> ooPpo -> ooPp -> o
            dupX2();
            dupX2();
            pop();
        } else {
            // p -> po -> opo -> oop -> o
            dupX1();
            swap();
        }
        invokeConstructor(boxed, new Method("<init>", Type.VOID_TYPE, new Type[] { type }));
    }
}

---

• «
• 1
• 2
• 3
• 4
• 5
• 6
• 7
• 8
• 9
• »