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

Introduction

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

Prototype

public static Method getMethod(final String method) 

Source Link

Document

Returns a Method corresponding to the given Java method declaration.

Usage

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

License:Apache License

/**
 * Generate impl method.//from  w w  w  .  j  a  v a2s.c  o m
 */
private void impl() {
    final Method run = Method.getMethod("Object run()");

    final GeneratorAdapter mgen = new GeneratorAdapter(Opcodes.ACC_PUBLIC, run, null, exceptions, this);

    for (final Field field : fields) {
        mgen.loadThis();
        mgen.getField(action, field.name, field.type);
    }
    mgen.invokeStatic(owner.target, helper);

    if (methd.getReturnType().getSort() < Type.ARRAY) {
        mgen.valueOf(methd.getReturnType());
    }
    mgen.returnValue();
    mgen.endMethod();
}

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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  v  a2 s . c  o  m

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

    mg.visitEnd();
}

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

License:Apache License

private static void definePartialBeanProxyMethods(ClassWriter cw, Type proxyType, Type invocationHandlerType) {
    try {//  w w w .j av a2s .c  o  m
        // implement #setRedirectInvocationHandler
        Method asmMethod = Method.getMethod(PartialBeanProxy.class
                .getDeclaredMethod("setRedirectInvocationHandler", InvocationHandler.class));
        GeneratorAdapter mg = new GeneratorAdapter(Opcodes.ACC_PUBLIC, asmMethod, null, null, cw);

        mg.visitCode();

        mg.loadThis();
        mg.loadArg(0);
        mg.checkCast(invocationHandlerType);
        mg.putField(proxyType, FIELDNAME_HANDLER, invocationHandlerType);
        mg.returnValue();

        mg.visitMaxs(2, 1);
        mg.visitEnd();

        // implement #getRedirectInvocationHandler
        asmMethod = Method.getMethod(PartialBeanProxy.class.getDeclaredMethod("getRedirectInvocationHandler"));
        mg = new GeneratorAdapter(Opcodes.ACC_PUBLIC, asmMethod, null, null, cw);

        mg.visitCode();

        mg.loadThis();
        mg.getField(proxyType, FIELDNAME_HANDLER, invocationHandlerType);
        mg.returnValue();

        mg.visitMaxs(2, 1);
        mg.visitEnd();
    } catch (NoSuchMethodException e) {
        throw new IllegalStateException("Unable to implement " + PartialBeanProxy.class.getName(), e);
    }
}

---

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

License:Apache License

private static void defineMethod(ClassWriter cw, java.lang.reflect.Method method, Type proxyType,
        Type invocationHandlerType, Type superType, boolean callInvocationHandler) {
    Type methodType = Type.getType(method);
    Type[] exceptionTypes = getTypes(method.getExceptionTypes());

    // push the method definition
    int modifiers = (Opcodes.ACC_PUBLIC | Opcodes.ACC_PROTECTED) & method.getModifiers();
    Method asmMethod = Method.getMethod(method);
    GeneratorAdapter mg = new GeneratorAdapter(modifiers, asmMethod, null, exceptionTypes, cw);

    // copy annotations
    for (Annotation annotation : method.getDeclaredAnnotations()) {
        mg.visitAnnotation(Type.getDescriptor(annotation.annotationType()), true).visitEnd();
    }//  w  ww .  j  a  va  2s. c o m

    mg.visitCode();

    Label tryBlockStart = mg.mark();

    mg.loadThis();
    loadCurrentMethod(mg, method, methodType);
    loadArguments(mg, method, methodType);

    // invoke our ProxyInvocationHandler
    mg.invokeStatic(Type.getType(ManualInvocationHandler.class),
            Method.getMethod("Object staticInvoke(Object, java.lang.reflect.Method, Object[])"));

    // cast the result
    mg.unbox(methodType.getReturnType());

    Label tryBlockEnd = mg.mark();

    // push return
    mg.returnValue();

    boolean throwableCatched = false;

    // catch ProceedOriginalRuntimeException
    Label proceedOriginal = mg.mark();
    if (callInvocationHandler) {
        // call stored InvocationHandler
        mg.loadThis();
        mg.getField(proxyType, FIELDNAME_HANDLER, invocationHandlerType);
        mg.loadThis();
        loadCurrentMethod(mg, method, methodType);
        loadArguments(mg, method, methodType);
        mg.invokeVirtual(invocationHandlerType,
                Method.getMethod("Object invoke(Object, java.lang.reflect.Method, Object[])"));
        mg.unbox(methodType.getReturnType());
        mg.returnValue();
    } else {
        // call super method
        mg.loadThis();
        mg.loadArgs();
        mg.visitMethodInsn(Opcodes.INVOKESPECIAL, superType.getInternalName(), method.getName(),
                Type.getMethodDescriptor(method), false);
        mg.returnValue();
    }
    mg.visitTryCatchBlock(tryBlockStart, tryBlockEnd, proceedOriginal,
            Type.getInternalName(ProceedOriginalMethodException.class));

    // catch declared exceptions
    if (exceptionTypes.length > 0) {
        Label rethrow = mg.mark();
        mg.visitVarInsn(Opcodes.ASTORE, 1);
        mg.visitVarInsn(Opcodes.ALOAD, 1);
        mg.throwException();

        // catch declared exceptions and rethrow it...
        for (Type exceptionType : exceptionTypes) {
            if (exceptionType.getClassName().equals(Throwable.class.getName())) {
                throwableCatched = true;
            }
            mg.visitTryCatchBlock(tryBlockStart, tryBlockEnd, rethrow, exceptionType.getInternalName());
        }
    }

    if (!throwableCatched) {
        // catch Throwable and wrap it with a UndeclaredThrowableException
        Type uteType = Type.getType(UndeclaredThrowableException.class);
        Label wrapAndRethrow = mg.mark();

        mg.visitVarInsn(Opcodes.ASTORE, 1);
        mg.newInstance(uteType);
        mg.dup();
        mg.visitVarInsn(Opcodes.ALOAD, 1);
        mg.invokeConstructor(uteType, Method.getMethod("void <init>(java.lang.Throwable)"));
        mg.throwException();

        mg.visitTryCatchBlock(tryBlockStart, tryBlockEnd, wrapAndRethrow,
                Type.getInternalName(Throwable.class));
    }

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

---

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

License:Apache License

/**
 * Generates:/* w  w  w.  j av  a2s. com*/
 * <pre>
 * Method method =
 *      method.getDeclaringClass().getMethod("methodName", new Class[] { args... });
 * </pre>
 * @param mg
 * @param method
 * @param methodType
 */
private static void loadCurrentMethod(GeneratorAdapter mg, java.lang.reflect.Method method, Type methodType) {
    mg.push(Type.getType(method.getDeclaringClass()));
    mg.push(method.getName());

    // create the Class[]
    mg.push(methodType.getArgumentTypes().length);
    mg.newArray(TYPE_CLASS);

    // push parameters into array
    for (int i = 0; i < methodType.getArgumentTypes().length; i++) {
        // keep copy of array on stack
        mg.dup();

        // push index onto stack
        mg.push(i);
        mg.push(methodType.getArgumentTypes()[i]);
        mg.arrayStore(TYPE_CLASS);
    }

    // invoke getMethod() with the method name and the array of types
    mg.invokeVirtual(TYPE_CLASS,
            Method.getMethod("java.lang.reflect.Method getDeclaredMethod(String, Class[])"));
}

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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 w w.  j  av  a  2  s  .  c om*/

    // 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 defineDeltaSpikeProxyMethods(ClassWriter cw, Type proxyType) {
    try {/* ww  w  .  ja  va  2s.c  o m*/
        // implement #setInvocationHandler
        Method asmMethod = Method.getMethod(DeltaSpikeProxy.class.getDeclaredMethod("setInvocationHandler",
                DeltaSpikeProxyInvocationHandler.class));
        GeneratorAdapter mg = new GeneratorAdapter(Opcodes.ACC_PUBLIC, asmMethod, null, null, cw);

        mg.visitCode();

        mg.loadThis();
        mg.loadArg(0);
        mg.checkCast(TYPE_DELTA_SPIKE_PROXY_INVOCATION_HANDLER);
        mg.putField(proxyType, FIELDNAME_INVOCATION_HANDLER, TYPE_DELTA_SPIKE_PROXY_INVOCATION_HANDLER);
        mg.returnValue();

        mg.visitMaxs(2, 1);
        mg.visitEnd();

        // implement #getInvocationHandler
        asmMethod = Method.getMethod(DeltaSpikeProxy.class.getDeclaredMethod("getInvocationHandler"));
        mg = new GeneratorAdapter(Opcodes.ACC_PUBLIC, asmMethod, null, null, cw);

        mg.visitCode();

        mg.loadThis();
        mg.getField(proxyType, FIELDNAME_INVOCATION_HANDLER, TYPE_DELTA_SPIKE_PROXY_INVOCATION_HANDLER);
        mg.returnValue();

        mg.visitMaxs(2, 1);
        mg.visitEnd();

        // implement #setDelegateInvocationHandler
        asmMethod = Method.getMethod(DeltaSpikeProxy.class.getDeclaredMethod("setDelegateInvocationHandler",
                InvocationHandler.class));
        mg = new GeneratorAdapter(Opcodes.ACC_PUBLIC, asmMethod, null, null, cw);

        mg.visitCode();

        mg.loadThis();
        mg.loadArg(0);
        mg.checkCast(TYPE_INVOCATION_HANDLER);
        mg.putField(proxyType, FIELDNAME_DELEGATE_INVOCATION_HANDLER, TYPE_INVOCATION_HANDLER);
        mg.returnValue();

        mg.visitMaxs(2, 1);
        mg.visitEnd();

        // implement #getDelegateInvocationHandler
        asmMethod = Method.getMethod(DeltaSpikeProxy.class.getDeclaredMethod("getDelegateInvocationHandler"));
        mg = new GeneratorAdapter(Opcodes.ACC_PUBLIC, asmMethod, null, null, cw);

        mg.visitCode();

        mg.loadThis();
        mg.getField(proxyType, FIELDNAME_DELEGATE_INVOCATION_HANDLER, TYPE_INVOCATION_HANDLER);
        mg.returnValue();

        mg.visitMaxs(2, 1);
        mg.visitEnd();

        // implement #setDelegateMethods
        asmMethod = Method.getMethod(DeltaSpikeProxy.class.getDeclaredMethod("setDelegateMethods",
                java.lang.reflect.Method[].class));
        mg = new GeneratorAdapter(Opcodes.ACC_PUBLIC, asmMethod, null, null, cw);

        mg.visitCode();

        mg.loadThis();
        mg.loadArg(0);
        mg.checkCast(TYPE_METHOD_ARRAY);
        mg.putField(proxyType, FIELDNAME_DELEGATE_METHODS, TYPE_METHOD_ARRAY);
        mg.returnValue();

        mg.visitMaxs(2, 1);
        mg.visitEnd();

        // implement #getDelegateMethods
        asmMethod = Method.getMethod(DeltaSpikeProxy.class.getDeclaredMethod("getDelegateMethods"));
        mg = new GeneratorAdapter(Opcodes.ACC_PUBLIC, asmMethod, null, null, cw);

        mg.visitCode();

        mg.loadThis();
        mg.getField(proxyType, FIELDNAME_DELEGATE_METHODS, TYPE_METHOD_ARRAY);
        mg.returnValue();

        mg.visitMaxs(2, 1);
        mg.visitEnd();
    } catch (NoSuchMethodException e) {
        throw new IllegalStateException("Unable to implement " + DeltaSpikeProxy.class.getName(), e);
    }
}

---

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();//www. j  a  va  2 s.  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.AsmDeltaSpikeProxyClassGenerator.java

License:Apache License

private static void defineMethod(ClassWriter cw, java.lang.reflect.Method method, Type proxyType) {
    Type methodType = Type.getType(method);

    ArrayList<Type> exceptionsToCatch = new ArrayList<Type>();
    for (Class<?> exception : method.getExceptionTypes()) {
        if (!RuntimeException.class.isAssignableFrom(exception)) {
            exceptionsToCatch.add(Type.getType(exception));
        }/*www. j  a v  a  2s  . com*/
    }

    // push the method definition
    int modifiers = (Opcodes.ACC_PUBLIC | Opcodes.ACC_PROTECTED) & method.getModifiers();
    Method asmMethod = Method.getMethod(method);
    GeneratorAdapter mg = new GeneratorAdapter(modifiers, asmMethod, null, getTypes(method.getExceptionTypes()),
            cw);

    // copy annotations
    for (Annotation annotation : method.getDeclaredAnnotations()) {
        mg.visitAnnotation(Type.getDescriptor(annotation.annotationType()), true).visitEnd();
    }

    mg.visitCode();

    Label tryBlockStart = mg.mark();

    mg.loadThis();
    mg.getField(proxyType, FIELDNAME_INVOCATION_HANDLER, TYPE_DELTA_SPIKE_PROXY_INVOCATION_HANDLER);
    mg.loadThis();
    loadCurrentMethod(mg, method, methodType);
    loadArguments(mg, method, methodType);

    mg.invokeVirtual(TYPE_DELTA_SPIKE_PROXY_INVOCATION_HANDLER,
            Method.getMethod("Object invoke(Object, java.lang.reflect.Method, Object[])"));

    // cast the result
    mg.unbox(methodType.getReturnType());

    // build try catch
    Label tryBlockEnd = mg.mark();

    // push return
    mg.returnValue();

    // catch runtime exceptions and rethrow it
    Label rethrow = mg.mark();
    mg.visitVarInsn(Opcodes.ASTORE, 1);
    mg.visitVarInsn(Opcodes.ALOAD, 1);
    mg.throwException();
    mg.visitTryCatchBlock(tryBlockStart, tryBlockEnd, rethrow, Type.getInternalName(RuntimeException.class));

    // catch checked exceptions and rethrow it
    boolean throwableCatched = false;
    if (!exceptionsToCatch.isEmpty()) {
        rethrow = mg.mark();
        mg.visitVarInsn(Opcodes.ASTORE, 1);
        mg.visitVarInsn(Opcodes.ALOAD, 1);
        mg.throwException();

        // catch declared exceptions and rethrow it...
        for (Type exceptionType : exceptionsToCatch) {
            if (exceptionType.getClassName().equals(Throwable.class.getName())) {
                throwableCatched = true;
            }
            mg.visitTryCatchBlock(tryBlockStart, tryBlockEnd, rethrow, exceptionType.getInternalName());
        }
    }

    // if throwable isn't alreached cachted, catch it and wrap it with an UndeclaredThrowableException and throw it
    if (!throwableCatched) {
        Type uteType = Type.getType(UndeclaredThrowableException.class);
        Label wrapAndRethrow = mg.mark();

        mg.visitVarInsn(Opcodes.ASTORE, 1);
        mg.newInstance(uteType);
        mg.dup();
        mg.visitVarInsn(Opcodes.ALOAD, 1);
        mg.invokeConstructor(uteType, Method.getMethod("void <init>(java.lang.Throwable)"));
        mg.throwException();

        mg.visitTryCatchBlock(tryBlockStart, tryBlockEnd, wrapAndRethrow,
                Type.getInternalName(Throwable.class));
    }

    // finish the method
    mg.endMethod();
    mg.visitMaxs(12, 12);
    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();// w w w.  j av a 2  s  . 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, delegateInvocationHandlerType);

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

    mg.visitEnd();
}

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