Example usage for org.objectweb.asm.tree MethodNode MethodNode

Introduction

In this page you can find the example usage for org.objectweb.asm.tree MethodNode MethodNode.

Prototype

public MethodNode() 

Source Link

Document

Constructs an uninitialized MethodNode .

Usage

From source file:org.diorite.inject.controller.TransformerMethodInjector.java

License:Open Source License

private void injectMethods() {
    MethodNode methodNode = new MethodNode();
    for (ControllerMethodData methodData : this.injectTransformer.classData.getMethods()) {
        TransformerInvokerGenerator.generateMethodInjection(this.injectTransformer.classData, methodData,
                methodNode, true, -1);/* ww w.  ja va 2  s.co  m*/
    }
    for (TransformerInitMethodData methodData : this.injectTransformer.inits.values()) {
        InsnList instructions = methodData.node.instructions;
        for (InsnNode node : methodData.returns) {
            instructions.insertBefore(node, methodNode.instructions);
        }
    }
}

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From source file:org.diorite.inject.impl.controller.TransformerFieldInjector.java

License:Open Source License

private void injectField(TransformerFieldPair fieldPair, TransformerInjectTracker result) {
    ControllerFieldData<?> fieldData = fieldPair.data;
    assert fieldData != null;

    MethodInsnNode injectionInvokeNode = result.getResult();
    FieldInsnNode putfieldNode = result.getFieldInsnNode();

    // insert invoke methods:
    MethodNode codeBefore = new MethodNode();
    MethodNode codeAfter = new MethodNode();
    this.injectTransformer.fillMethodInvokes(codeBefore, codeAfter, fieldData);

    // node list for PUTFIELD
    InsnList initNodeList = result.getInitNodeList();
    // node list for invoke execution
    InsnList resultNodeList = result.getResultNodeList();

    if (codeBefore.instructions.size() != 0) {
        // invoke before should be added before PUTFIELD and before INVOKE
        resultNodeList.insertBefore(injectionInvokeNode, codeBefore.instructions);
    }/* www. j  a v a  2s . c  o m*/
    if (codeAfter.instructions.size() != 0) {
        // invoke after should be added after PUTFIELD
        initNodeList.insert(putfieldNode, codeAfter.instructions);
    }

    // and replace placeholder node with real injections:
    {
        MethodNode tempNode = new MethodNode();
        TransformerInvokerGenerator.generateFieldInjection(this.injectTransformer.classData, fieldData,
                tempNode, -1, fieldPair.placeholderType);
        resultNodeList.insertBefore(injectionInvokeNode, tempNode.instructions);
        resultNodeList.remove(injectionInvokeNode);
    }
}

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From source file:org.jacoco.core.internal.analysis.AC_MethodAnalyzerTest.java

License:Open Source License

@Before
public void setup() {
    nextProbeId = 0;/*from   w w w  . j a  va  2s .c om*/
    method = new MethodNode();
    method.tryCatchBlocks = new ArrayList<TryCatchBlockNode>();
    probes = new boolean[32];
}

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From source file:org.jacoco.core.internal.instr.CondyProbeArrayStrategyTest.java

License:Open Source License

@Test
public void should_store_instance_using_condy_and_checkcast() {
    final MethodNode m = new MethodNode();
    final int maxStack = strategy.storeInstance(m, false, 1);

    assertEquals(1, maxStack);/*from  w  ww .j  a  va  2  s.  co m*/

    final ConstantDynamic constantDynamic = (ConstantDynamic) ((LdcInsnNode) m.instructions.get(0)).cst;
    assertEquals("$jacocoData", constantDynamic.getName());
    assertEquals("Ljava/lang/Object;", constantDynamic.getDescriptor());

    final Handle bootstrapMethod = constantDynamic.getBootstrapMethod();
    assertEquals(Opcodes.H_INVOKESTATIC, bootstrapMethod.getTag());
    assertEquals("ClassName", bootstrapMethod.getOwner());
    assertEquals("$jacocoInit", bootstrapMethod.getName());
    assertEquals("(Ljava/lang/invoke/MethodHandles$Lookup;Ljava/lang/String;Ljava/lang/Class;)[Z",
            bootstrapMethod.getDesc());
    assertTrue(bootstrapMethod.isInterface());

    final TypeInsnNode castInstruction = (TypeInsnNode) m.instructions.get(1);
    assertEquals(Opcodes.CHECKCAST, castInstruction.getOpcode());
    assertEquals("[Z", castInstruction.desc);

    final VarInsnNode storeInstruction = (VarInsnNode) m.instructions.get(2);
    assertEquals(Opcodes.ASTORE, storeInstruction.getOpcode());
    assertEquals(1, storeInstruction.var);

    assertEquals(3, m.instructions.size());
}

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From source file:org.lenskit.data.entities.AbstractBeanEntity.java

License:Open Source License

private static MethodNode generateGetterConstructor() {
    MethodNode cn = new MethodNode();
    cn.name = "<init>";
    cn.desc = "()V";
    cn.access = ACC_PUBLIC;/*from   ww  w .  j  a  v a2 s  . c  o m*/
    cn.exceptions = Collections.emptyList();
    cn.maxStack = 1;
    cn.maxLocals = 1;
    // load the instance
    cn.visitVarInsn(ALOAD, 0);
    // call superclass constructor
    cn.visitMethodInsn(INVOKESPECIAL, Type.getInternalName(BeanAttributeGetter.class), "<init>", "()V", false);
    cn.visitInsn(RETURN);
    return cn;
}

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From source file:org.lenskit.data.entities.AbstractBeanEntity.java

License:Open Source License

private static MethodNode generateGetterMethod(Class<? extends AbstractBeanEntity> type, Method getter) {
    MethodNode gn = new MethodNode();
    gn.name = "get";
    gn.desc = Type.getMethodDescriptor(Type.getType(Object.class), Type.getType(AbstractBeanEntity.class));
    gn.access = ACC_PUBLIC;//from  w  w w . j  a  v  a  2s . c o  m
    gn.exceptions = Collections.emptyList();
    Type rt = Type.getReturnType(getter);
    gn.maxLocals = 2;
    gn.maxStack = 1 + rt.getSize();
    gn.visitCode();
    // load the target object from parameter
    gn.visitVarInsn(ALOAD, 1);
    // cast to target object type
    gn.visitTypeInsn(CHECKCAST, Type.getInternalName(type));
    // call target object method
    gn.visitMethodInsn(INVOKEVIRTUAL, Type.getInternalName(type), getter.getName(),
            Type.getMethodDescriptor(getter), false);
    // convert from primitive to object if necessary
    CGUtils.adaptFromType(gn, getter.getReturnType());
    gn.visitInsn(ARETURN);
    return gn;
}

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From source file:org.lenskit.data.entities.AbstractBeanEntity.java

License:Open Source License

private static MethodNode generateLongGetterMethod(Class<? extends AbstractBeanEntity> type, Method getter) {
    MethodNode gn = new MethodNode();
    gn.name = "getLong";
    gn.desc = Type.getMethodDescriptor(Type.LONG_TYPE, Type.getType(AbstractBeanEntity.class));
    gn.access = ACC_PUBLIC;//from  w w  w .  j  a v a  2s .  c  o m
    gn.exceptions = Collections.emptyList();
    gn.maxLocals = 2;
    gn.maxStack = 2;
    gn.visitCode();
    gn.visitVarInsn(ALOAD, 1);
    gn.visitTypeInsn(CHECKCAST, Type.getInternalName(type));
    gn.visitMethodInsn(INVOKEVIRTUAL, Type.getInternalName(type), getter.getName(),
            Type.getMethodDescriptor(getter), false);
    gn.visitInsn(LRETURN);
    return gn;
}

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From source file:org.lenskit.data.entities.AbstractBeanEntity.java

License:Open Source License

private static MethodNode generateDoubleGetterMethod(Class<? extends AbstractBeanEntity> type, Method getter) {
    MethodNode gn = new MethodNode();
    gn.name = "getDouble";
    gn.desc = Type.getMethodDescriptor(Type.DOUBLE_TYPE, Type.getType(AbstractBeanEntity.class));
    gn.access = ACC_PUBLIC;/*w w  w .java2  s  . co  m*/
    gn.exceptions = Collections.emptyList();
    gn.maxLocals = 2;
    gn.maxStack = 2;
    gn.visitCode();
    gn.visitVarInsn(ALOAD, 1);
    gn.visitTypeInsn(CHECKCAST, Type.getInternalName(type));
    gn.visitMethodInsn(INVOKEVIRTUAL, Type.getInternalName(type), getter.getName(),
            Type.getMethodDescriptor(getter), false);
    gn.visitInsn(DRETURN);
    return gn;
}

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From source file:org.lenskit.data.entities.AbstractBeanEntityBuilder.java

License:Open Source License

private static MethodNode generateBeanConstructor(Class<? extends AttrMethod> superclass) {
    MethodNode ctor = new MethodNode();
    ctor.access = ACC_PUBLIC;//ww w.jav a2 s  .co  m
    ctor.desc = getMethodDescriptor(VOID_TYPE, getType(TypedName.class));
    ctor.name = "<init>";
    ctor.exceptions = Collections.emptyList();
    ctor.maxLocals = 2;
    ctor.maxStack = 2;
    // load instance ('this')
    ctor.visitVarInsn(ALOAD, 0);
    // load the attribute
    ctor.visitVarInsn(ALOAD, 1);
    // invoke superclass constructor with attribute
    ctor.visitMethodInsn(INVOKESPECIAL, getInternalName(superclass), "<init>", ctor.desc, false);
    ctor.visitInsn(RETURN);
    return ctor;
}

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From source file:org.lenskit.data.entities.AbstractBeanEntityBuilder.java

License:Open Source License

private static MethodNode generateSetter(Class<? extends AbstractBeanEntityBuilder> type, Method smethod) {
    MethodNode setter = new MethodNode();
    setter.access = ACC_PUBLIC;/*from  w ww . ja v a 2  s  . co m*/
    setter.desc = getMethodDescriptor(VOID_TYPE, getType(AbstractBeanEntityBuilder.class),
            getType(Object.class));
    setter.name = "set";
    setter.exceptions = Collections.emptyList();
    setter.maxLocals = 3;
    setter.maxStack = 2;
    // load target object
    setter.visitVarInsn(ALOAD, 1);
    // cast target object
    setter.visitTypeInsn(CHECKCAST, getInternalName(type));
    // load attribute value
    setter.visitVarInsn(ALOAD, 2);
    // convert attribute value if necessary
    setter.maxStack += CGUtils.adaptToType(setter, smethod.getParameterTypes()[0]);
    // call real setter
    setter.visitMethodInsn(INVOKEVIRTUAL, getInternalName(type), smethod.getName(),
            getMethodDescriptor(smethod), false);
    setter.visitInsn(RETURN);
    return setter;
}

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