Examples with Method org.objectweb.asm.commons.Method used on opensource projects

Example 46 with Method

use of org.objectweb.asm.commons.Method in project deltaspike by apache.

the class AsmProxyClassGenerator method defineMethod.

private static void defineMethod(ClassWriter cw, java.lang.reflect.Method method, Class manualInvocationHandlerClass) {
    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));
        }
    }
    // 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();
    loadCurrentMethod(mg, method, methodType);
    loadArguments(mg, method, methodType);
    // invoke our ProxyInvocationHandler
    mg.invokeStatic(Type.getType(manualInvocationHandlerClass), Method.getMethod("Object staticInvoke(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(10, 10);
    mg.visitEnd();
}

Example 47 with Method

use of org.objectweb.asm.commons.Method in project deltaspike by apache.

the class AsmProxyClassGenerator method defineDelegateInvocationHandlerConstructor.

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();
    // 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();
}

Example 48 with Method

use of org.objectweb.asm.commons.Method in project cdap by caskdata.

the class HttpHandlerGenerator method generateConstructor.

/**
   * Generates the constructor. The constructor generated has signature {@code (DelegatorContext, MetricsContext)}.
   */
private void generateConstructor(TypeToken<? extends HttpServiceHandler> delegateType, ClassWriter classWriter) {
    Method constructor = Methods.getMethod(void.class, "<init>", DelegatorContext.class, MetricsContext.class);
    String signature = Signatures.getMethodSignature(constructor, TypeToken.of(void.class), getContextType(delegateType), TypeToken.of(MetricsContext.class));
    // Constructor(DelegatorContext, MetricsContext)
    GeneratorAdapter mg = new GeneratorAdapter(Opcodes.ACC_PUBLIC, constructor, signature, null, classWriter);
    // super(context, metricsContext);
    mg.loadThis();
    mg.loadArg(0);
    mg.loadArg(1);
    mg.invokeConstructor(Type.getType(AbstractHttpHandlerDelegator.class), Methods.getMethod(void.class, "<init>", DelegatorContext.class, MetricsContext.class));
    mg.returnValue();
    mg.endMethod();
}

Example 49 with Method

use of org.objectweb.asm.commons.Method in project Lucee by lucee.

the class TagHelper method setAttributes.

private static void setAttributes(BytecodeContext bc, Tag tag, int currLocal, Type currType, boolean doDefault, boolean interf) throws TransformerException {
    GeneratorAdapter adapter = bc.getAdapter();
    Map<String, Attribute> attributes = tag.getAttributes();
    String methodName;
    Attribute attr;
    Iterator<Attribute> it = attributes.values().iterator();
    while (it.hasNext()) {
        attr = it.next();
        if (doDefault != attr.isDefaultAttribute())
            continue;
        if (attr.isDynamicType()) {
            adapter.loadLocal(currLocal);
            if (interf)
                adapter.checkCast(Types.DYNAMIC_ATTRIBUTES);
            adapter.visitInsn(Opcodes.ACONST_NULL);
            // adapter.push(attr.getName());
            bc.getFactory().registerKey(bc, bc.getFactory().createLitString(attr.getName()), false);
            attr.getValue().writeOut(bc, Expression.MODE_REF);
            ASMUtil.invoke(interf ? ASMUtil.INTERFACE : ASMUtil.VIRTUAL, adapter, interf ? Types.DYNAMIC_ATTRIBUTES : currType, SET_DYNAMIC_ATTRIBUTE);
        // adapter.invokeVirtual(currType, SET_DYNAMIC_ATTRIBUTE);
        } else {
            // TagUtil.setAttribute(PageContext pc,boolean doDynamic,boolean silently,Tag tag, String name,Object value)
            if (interf) {
                // pc
                adapter.loadArg(0);
                // tag
                adapter.loadLocal(currLocal);
                // name
                bc.getFactory().createLitString(attr.getName()).writeOut(bc, Expression.MODE_REF);
                // value
                attr.getValue().writeOut(bc, Expression.MODE_REF);
                adapter.invokeStatic(TAG_UTIL, SET_ATTRIBUTE4);
            } else {
                Type type = CastOther.getType(attr.getType());
                methodName = tag.getTagLibTag().getSetter(attr, type);
                adapter.loadLocal(currLocal);
                attr.getValue().writeOut(bc, Types.isPrimitiveType(type) ? Expression.MODE_VALUE : Expression.MODE_REF);
                adapter.invokeVirtual(currType, new Method(methodName, Type.VOID_TYPE, new Type[] { type }));
            }
        }
    }
}

Example 50 with Method

use of org.objectweb.asm.commons.Method in project Lucee by lucee.

the class TagInclude method _writeOut.

/**
 * @see lucee.transformer.bytecode.statement.tag.TagBase#_writeOut(org.objectweb.asm.commons.GeneratorAdapter)
 */
@Override
public void _writeOut(BytecodeContext bc) throws TransformerException {
    Type type = Types.PAGE_CONTEXT;
    Method func = DO_INCLUDE_RUN_ONCE2;
    // cachedwithin
    Expression cachedwithin = null;
    Attribute attr = getAttribute("cachedwithin");
    if (attr != null && attr.getValue() != null) {
        cachedwithin = attr.getValue();
        type = Types.PAGE_CONTEXT_IMPL;
        func = DO_INCLUDE_RUN_ONCE3;
    }
    GeneratorAdapter adapter = bc.getAdapter();
    adapter.loadArg(0);
    if (cachedwithin != null)
        adapter.checkCast(Types.PAGE_CONTEXT_IMPL);
    // template
    getAttribute("template").getValue().writeOut(bc, Expression.MODE_REF);
    // run Once
    attr = getAttribute("runonce");
    ExprBoolean expr = (attr == null) ? bc.getFactory().FALSE() : bc.getFactory().toExprBoolean(attr.getValue());
    expr.writeOut(bc, Expression.MODE_VALUE);
    // cachedwithin
    if (cachedwithin != null)
        cachedwithin.writeOut(bc, Expression.MODE_REF);
    adapter.invokeVirtual(type, func);
}