Example usage for org.objectweb.asm MethodVisitor visitLdcInsn

List of usage examples for org.objectweb.asm MethodVisitor visitLdcInsn

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Introduction

In this page you can find the example usage for org.objectweb.asm MethodVisitor visitLdcInsn.

Prototype

public void visitLdcInsn(final Object value)

Source Link

Document

Visits a LDC instruction.

Usage

From source file:org.apache.felix.ipojo.manipulation.ClassManipulator.java

License:Apache License

/**
 * Create a setter method for an array.// w  ww. j  ava 2 s .  c om
 * @param name : field name
 * @param desc : method description
 */
private void createArrayGetter(String name, String desc) {
    String methodName = "__get" + name;
    MethodVisitor mv = cv.visitMethod(0, methodName, desc, null, null);
    mv.visitCode();

    String internalType = desc.substring(2);

    mv.visitVarInsn(ALOAD, 0);
    mv.visitFieldInsn(GETFIELD, m_owner, FIELD_FLAG_PREFIX + name, "Z");
    Label l1 = new Label();
    mv.visitJumpInsn(IFNE, l1);
    mv.visitVarInsn(ALOAD, 0);
    mv.visitFieldInsn(GETFIELD, m_owner, name, internalType);
    mv.visitInsn(ARETURN);
    mv.visitLabel(l1);

    mv.visitVarInsn(ALOAD, 0);
    mv.visitFieldInsn(GETFIELD, m_owner, IM_FIELD, "Lorg/apache/felix/ipojo/InstanceManager;");
    mv.visitVarInsn(ALOAD, 0);
    mv.visitLdcInsn(name);
    mv.visitMethodInsn(INVOKEVIRTUAL, "org/apache/felix/ipojo/InstanceManager", GET,
            "(Ljava/lang/Object;Ljava/lang/String;)Ljava/lang/Object;", false);
    mv.visitTypeInsn(CHECKCAST, internalType);
    mv.visitInsn(ARETURN);

    // End
    mv.visitMaxs(0, 0);
    mv.visitEnd();
}

From source file:org.apache.felix.ipojo.manipulation.ClassManipulator.java

License:Apache License

/**
 * Create the getter for a field./*from w w w .  j a v a2 s  .  c om*/
 * @param name : field of the dependency
 * @param desc : description of the getter method
 * @param type : type to return
 */
private void createSimpleGetter(String name, String desc, Type type) {
    String methodName = "__get" + name;
    MethodVisitor mv = cv.visitMethod(0, methodName, desc, null, null);
    mv.visitCode();

    switch (type.getSort()) {
    case Type.BOOLEAN:
    case Type.CHAR:
    case Type.BYTE:
    case Type.SHORT:
    case Type.INT:

        String internalName = ManipulationProperty.PRIMITIVE_BOXING_INFORMATION[type.getSort()][0];
        String boxingType = ManipulationProperty.PRIMITIVE_BOXING_INFORMATION[type.getSort()][1];
        String unboxingMethod = ManipulationProperty.PRIMITIVE_BOXING_INFORMATION[type.getSort()][2];

        Label l0 = new Label();
        mv.visitLabel(l0);

        mv.visitVarInsn(ALOAD, 0);
        mv.visitFieldInsn(GETFIELD, m_owner, FIELD_FLAG_PREFIX + name, "Z");
        Label l1 = new Label();
        mv.visitJumpInsn(IFNE, l1);
        mv.visitVarInsn(ALOAD, 0);
        mv.visitFieldInsn(GETFIELD, m_owner, name, internalName);
        mv.visitInsn(IRETURN);

        mv.visitLabel(l1);

        mv.visitVarInsn(ALOAD, 0);
        mv.visitFieldInsn(GETFIELD, m_owner, IM_FIELD, "Lorg/apache/felix/ipojo/InstanceManager;");
        mv.visitVarInsn(ALOAD, 0);
        mv.visitLdcInsn(name);
        mv.visitMethodInsn(INVOKEVIRTUAL, "org/apache/felix/ipojo/InstanceManager", GET,
                "(Ljava/lang/Object;Ljava/lang/String;)Ljava/lang/Object;", false);
        mv.visitVarInsn(ASTORE, 1);

        mv.visitVarInsn(ALOAD, 1);
        mv.visitTypeInsn(CHECKCAST, boxingType);
        mv.visitVarInsn(ASTORE, 2);

        mv.visitVarInsn(ALOAD, 2);
        mv.visitMethodInsn(INVOKEVIRTUAL, boxingType, unboxingMethod, "()" + internalName, false);
        mv.visitInsn(type.getOpcode(IRETURN));
        break;

    case Type.LONG:
        internalName = ManipulationProperty.PRIMITIVE_BOXING_INFORMATION[type.getSort()][0];
        boxingType = ManipulationProperty.PRIMITIVE_BOXING_INFORMATION[type.getSort()][1];
        unboxingMethod = ManipulationProperty.PRIMITIVE_BOXING_INFORMATION[type.getSort()][2];

        l0 = new Label();
        mv.visitLabel(l0);
        mv.visitVarInsn(ALOAD, 0);
        mv.visitFieldInsn(GETFIELD, m_owner, FIELD_FLAG_PREFIX + name, "Z");
        l1 = new Label();
        mv.visitJumpInsn(IFNE, l1);
        mv.visitVarInsn(ALOAD, 0);
        mv.visitFieldInsn(GETFIELD, m_owner, name, internalName);
        mv.visitInsn(LRETURN);
        mv.visitLabel(l1);

        mv.visitVarInsn(ALOAD, 0);
        mv.visitFieldInsn(GETFIELD, m_owner, IM_FIELD, "Lorg/apache/felix/ipojo/InstanceManager;");
        mv.visitVarInsn(ALOAD, 0);
        mv.visitLdcInsn(name);
        mv.visitMethodInsn(INVOKEVIRTUAL, "org/apache/felix/ipojo/InstanceManager", GET,
                "(Ljava/lang/Object;Ljava/lang/String;)Ljava/lang/Object;", false);
        mv.visitVarInsn(ASTORE, 1);

        mv.visitVarInsn(ALOAD, 1);
        mv.visitTypeInsn(CHECKCAST, boxingType);
        mv.visitVarInsn(ASTORE, 2);

        mv.visitVarInsn(ALOAD, 2);
        mv.visitMethodInsn(INVOKEVIRTUAL, boxingType, unboxingMethod, "()" + internalName, false);
        mv.visitInsn(LRETURN);

        break;

    case Type.DOUBLE:
        internalName = ManipulationProperty.PRIMITIVE_BOXING_INFORMATION[type.getSort()][0];
        boxingType = ManipulationProperty.PRIMITIVE_BOXING_INFORMATION[type.getSort()][1];
        unboxingMethod = ManipulationProperty.PRIMITIVE_BOXING_INFORMATION[type.getSort()][2];

        l0 = new Label();
        mv.visitLabel(l0);
        mv.visitVarInsn(ALOAD, 0);
        mv.visitFieldInsn(GETFIELD, m_owner, FIELD_FLAG_PREFIX + name, "Z");
        l1 = new Label();
        mv.visitJumpInsn(IFNE, l1);
        mv.visitVarInsn(ALOAD, 0);
        mv.visitFieldInsn(GETFIELD, m_owner, name, internalName);
        mv.visitInsn(DRETURN);
        mv.visitLabel(l1);

        mv.visitVarInsn(ALOAD, 0);
        mv.visitFieldInsn(GETFIELD, m_owner, IM_FIELD, "Lorg/apache/felix/ipojo/InstanceManager;");
        mv.visitVarInsn(ALOAD, 0);
        mv.visitLdcInsn(name);
        mv.visitMethodInsn(INVOKEVIRTUAL, "org/apache/felix/ipojo/InstanceManager", GET,
                "(Ljava/lang/Object;Ljava/lang/String;)Ljava/lang/Object;", false);
        mv.visitVarInsn(ASTORE, 1);

        mv.visitVarInsn(ALOAD, 1);
        mv.visitTypeInsn(CHECKCAST, boxingType);
        mv.visitVarInsn(ASTORE, 2);

        mv.visitVarInsn(ALOAD, 2);
        mv.visitMethodInsn(INVOKEVIRTUAL, boxingType, unboxingMethod, "()" + internalName, false);
        mv.visitInsn(DRETURN);

        break;

    case Type.FLOAT:
        internalName = ManipulationProperty.PRIMITIVE_BOXING_INFORMATION[type.getSort()][0];
        boxingType = ManipulationProperty.PRIMITIVE_BOXING_INFORMATION[type.getSort()][1];
        unboxingMethod = ManipulationProperty.PRIMITIVE_BOXING_INFORMATION[type.getSort()][2];

        l0 = new Label();
        mv.visitLabel(l0);
        mv.visitVarInsn(ALOAD, 0);
        mv.visitFieldInsn(GETFIELD, m_owner, FIELD_FLAG_PREFIX + name, "Z");
        l1 = new Label();
        mv.visitJumpInsn(IFNE, l1);
        mv.visitVarInsn(ALOAD, 0);
        mv.visitFieldInsn(GETFIELD, m_owner, name, internalName);
        mv.visitInsn(FRETURN);
        mv.visitLabel(l1);

        mv.visitVarInsn(ALOAD, 0);
        mv.visitFieldInsn(GETFIELD, m_owner, IM_FIELD, "Lorg/apache/felix/ipojo/InstanceManager;");
        mv.visitVarInsn(ALOAD, 0);
        mv.visitLdcInsn(name);
        mv.visitMethodInsn(INVOKEVIRTUAL, "org/apache/felix/ipojo/InstanceManager", GET,
                "(Ljava/lang/Object;Ljava/lang/String;)Ljava/lang/Object;", false);
        mv.visitVarInsn(ASTORE, 1);

        mv.visitVarInsn(ALOAD, 1);
        mv.visitTypeInsn(CHECKCAST, boxingType);
        mv.visitVarInsn(ASTORE, 2);

        mv.visitVarInsn(ALOAD, 2);
        mv.visitMethodInsn(INVOKEVIRTUAL, boxingType, unboxingMethod, "()" + internalName, false);
        mv.visitInsn(FRETURN);

        break;

    case Type.OBJECT:
        l0 = new Label();
        mv.visitLabel(l0);
        mv.visitVarInsn(ALOAD, 0);
        mv.visitFieldInsn(GETFIELD, m_owner, FIELD_FLAG_PREFIX + name, "Z");
        l1 = new Label();
        mv.visitJumpInsn(IFNE, l1);
        mv.visitVarInsn(ALOAD, 0);
        mv.visitFieldInsn(GETFIELD, m_owner, name, "L" + type.getInternalName() + ";");
        mv.visitInsn(ARETURN);
        mv.visitLabel(l1);

        mv.visitVarInsn(ALOAD, 0);
        mv.visitFieldInsn(GETFIELD, m_owner, IM_FIELD, "Lorg/apache/felix/ipojo/InstanceManager;");
        mv.visitVarInsn(ALOAD, 0);
        mv.visitLdcInsn(name);
        mv.visitMethodInsn(INVOKEVIRTUAL, "org/apache/felix/ipojo/InstanceManager", GET,
                "(Ljava/lang/Object;Ljava/lang/String;)Ljava/lang/Object;", false);
        mv.visitTypeInsn(CHECKCAST, type.getInternalName());
        mv.visitInsn(ARETURN);

        break;

    default:
        ManipulationProperty.getLogger().log(ManipulationProperty.SEVERE,
                "Manipulation problem in " + m_owner + " : a type is not implemented : " + type);
        break;
    }

    mv.visitMaxs(0, 0);
    mv.visitEnd();
}

From source file:org.apache.felix.ipojo.manipulation.ClassManipulator.java

License:Apache License

/**
 * Create the setter method for one property. The name of the method is _set+name of the field
 * @param name : name of the field representing a property
 * @param desc : description of the setter method
 * @param type : type of the property//from ww w.  j  a  v  a2s  . c  o m
 */
private void createSimpleSetter(String name, String desc, Type type) {
    MethodVisitor mv = cv.visitMethod(0, "__set" + name, desc, null, null);
    mv.visitCode();

    switch (type.getSort()) {
    case Type.BOOLEAN:
    case Type.CHAR:
    case Type.BYTE:
    case Type.SHORT:
    case Type.INT:
    case Type.FLOAT:
        String internalName = ManipulationProperty.PRIMITIVE_BOXING_INFORMATION[type.getSort()][0];
        String boxingType = ManipulationProperty.PRIMITIVE_BOXING_INFORMATION[type.getSort()][1];

        Label l1 = new Label();
        mv.visitLabel(l1);

        mv.visitVarInsn(ALOAD, 0);
        mv.visitFieldInsn(GETFIELD, m_owner, FIELD_FLAG_PREFIX + name, "Z");
        Label l22 = new Label();
        mv.visitJumpInsn(IFNE, l22);

        mv.visitVarInsn(ALOAD, 0);
        mv.visitVarInsn(type.getOpcode(ILOAD), 1);
        mv.visitFieldInsn(PUTFIELD, m_owner, name, internalName);
        mv.visitInsn(RETURN);
        mv.visitLabel(l22);

        mv.visitTypeInsn(NEW, boxingType);
        mv.visitInsn(DUP);
        mv.visitVarInsn(type.getOpcode(ILOAD), 1);
        mv.visitMethodInsn(INVOKESPECIAL, boxingType, "<init>", "(" + internalName + ")V", false);
        mv.visitVarInsn(ASTORE, 2);

        Label l2 = new Label();
        mv.visitLabel(l2);
        mv.visitVarInsn(ALOAD, 0);
        mv.visitFieldInsn(GETFIELD, m_owner, IM_FIELD, "Lorg/apache/felix/ipojo/InstanceManager;");
        mv.visitVarInsn(ALOAD, 0);
        mv.visitLdcInsn(name);
        mv.visitVarInsn(ALOAD, 2);
        mv.visitMethodInsn(INVOKEVIRTUAL, "org/apache/felix/ipojo/InstanceManager", SET,
                "(Ljava/lang/Object;Ljava/lang/String;Ljava/lang/Object;)V", false);

        Label l3 = new Label();
        mv.visitLabel(l3);
        mv.visitInsn(RETURN);
        break;

    case Type.LONG:
    case Type.DOUBLE:
        internalName = ManipulationProperty.PRIMITIVE_BOXING_INFORMATION[type.getSort()][0];
        boxingType = ManipulationProperty.PRIMITIVE_BOXING_INFORMATION[type.getSort()][1];

        l1 = new Label();
        mv.visitLabel(l1);

        mv.visitVarInsn(ALOAD, 0);
        mv.visitFieldInsn(GETFIELD, m_owner, FIELD_FLAG_PREFIX + name, "Z");
        Label l23 = new Label();
        mv.visitJumpInsn(IFNE, l23);

        mv.visitVarInsn(ALOAD, 0);
        mv.visitVarInsn(type.getOpcode(ILOAD), 1);
        mv.visitFieldInsn(PUTFIELD, m_owner, name, internalName);
        mv.visitInsn(RETURN);
        mv.visitLabel(l23);

        mv.visitTypeInsn(NEW, boxingType);
        mv.visitInsn(DUP);
        mv.visitVarInsn(type.getOpcode(ILOAD), 1);
        mv.visitMethodInsn(INVOKESPECIAL, boxingType, "<init>", "(" + internalName + ")V", false);
        mv.visitVarInsn(ASTORE, 3); // Double space

        l2 = new Label();
        mv.visitLabel(l2);
        mv.visitVarInsn(ALOAD, 0);
        mv.visitFieldInsn(GETFIELD, m_owner, IM_FIELD, "Lorg/apache/felix/ipojo/InstanceManager;");
        mv.visitVarInsn(ALOAD, 0);
        mv.visitLdcInsn(name);
        mv.visitVarInsn(ALOAD, 3);
        mv.visitMethodInsn(INVOKEVIRTUAL, "org/apache/felix/ipojo/InstanceManager", SET,
                "(Ljava/lang/Object;Ljava/lang/String;Ljava/lang/Object;)V", false);

        l3 = new Label();
        mv.visitLabel(l3);
        mv.visitInsn(RETURN);
        break;

    case Type.OBJECT:
        mv.visitVarInsn(ALOAD, 0);
        mv.visitFieldInsn(GETFIELD, m_owner, FIELD_FLAG_PREFIX + name, "Z");
        Label l24 = new Label();
        mv.visitJumpInsn(IFNE, l24);

        mv.visitVarInsn(ALOAD, 0);
        mv.visitVarInsn(ALOAD, 1);
        mv.visitFieldInsn(PUTFIELD, m_owner, name, "L" + type.getInternalName() + ";");
        mv.visitInsn(RETURN);
        mv.visitLabel(l24);

        mv.visitVarInsn(ALOAD, 0);
        mv.visitFieldInsn(GETFIELD, m_owner, IM_FIELD, "Lorg/apache/felix/ipojo/InstanceManager;");
        mv.visitVarInsn(ALOAD, 0);
        mv.visitLdcInsn(name);
        mv.visitVarInsn(ALOAD, 1);
        mv.visitMethodInsn(INVOKEVIRTUAL, "org/apache/felix/ipojo/InstanceManager", SET,
                "(Ljava/lang/Object;Ljava/lang/String;Ljava/lang/Object;)V", false);

        mv.visitInsn(RETURN);
        break;
    default:
        ManipulationProperty.getLogger().log(ManipulationProperty.SEVERE,
                "Manipulation Error : Cannot create the setter method for the field : " + name + " (" + type
                        + ")");
        break;
    }

    mv.visitMaxs(0, 0);
    mv.visitEnd();
}

From source file:org.apache.felix.ipojo.manipulation.MethodCreator.java

License:Apache License

/**
 * Create the setter method for the __cm field.
 *///from w ww .  j  a v a 2  s  .c om
private void createSetInstanceManagerMethod() {
    MethodVisitor mv = cv.visitMethod(ACC_PRIVATE, "_setInstanceManager",
            "(Lorg/apache/felix/ipojo/InstanceManager;)V", null, null);
    mv.visitCode();

    // If the given instance manager is null, just returns.
    mv.visitVarInsn(ALOAD, 1);
    Label l1 = new Label();
    mv.visitJumpInsn(IFNONNULL, l1);
    mv.visitInsn(RETURN);
    mv.visitLabel(l1);

    mv.visitVarInsn(ALOAD, 0);
    mv.visitVarInsn(ALOAD, 1);
    mv.visitFieldInsn(PUTFIELD, m_owner, IM_FIELD, "Lorg/apache/felix/ipojo/InstanceManager;");

    mv.visitVarInsn(ALOAD, 0);
    mv.visitFieldInsn(GETFIELD, m_owner, IM_FIELD, "Lorg/apache/felix/ipojo/InstanceManager;");
    mv.visitMethodInsn(INVOKEVIRTUAL, "org/apache/felix/ipojo/InstanceManager", "getRegistredFields",
            "()Ljava/util/Set;");
    mv.visitVarInsn(ASTORE, 2);

    mv.visitVarInsn(ALOAD, 2);
    Label endif = new Label();
    mv.visitJumpInsn(IFNULL, endif);
    Iterator it = m_fields.iterator();
    while (it.hasNext()) {
        String field = (String) it.next();
        mv.visitVarInsn(ALOAD, 2);
        mv.visitLdcInsn(field);
        mv.visitMethodInsn(INVOKEINTERFACE, "java/util/Set", "contains", "(Ljava/lang/Object;)Z");
        Label l3 = new Label();
        mv.visitJumpInsn(IFEQ, l3);
        mv.visitVarInsn(ALOAD, 0);
        mv.visitInsn(ICONST_1);
        mv.visitFieldInsn(PUTFIELD, m_owner, FIELD_FLAG_PREFIX + field, "Z");
        mv.visitLabel(l3);
    }
    mv.visitLabel(endif);

    mv.visitVarInsn(ALOAD, 0);
    mv.visitFieldInsn(GETFIELD, m_owner, IM_FIELD, "Lorg/apache/felix/ipojo/InstanceManager;");
    mv.visitMethodInsn(INVOKEVIRTUAL, "org/apache/felix/ipojo/InstanceManager", "getRegistredMethods",
            "()Ljava/util/Set;");
    mv.visitVarInsn(ASTORE, 2);

    mv.visitVarInsn(ALOAD, 2);
    Label endif2 = new Label();
    mv.visitJumpInsn(IFNULL, endif2);

    for (int i = 0; i < m_methods.size(); i++) {
        String methodId = (String) m_methods.get(i);
        if (!methodId.equals("<init>")) {
            mv.visitVarInsn(ALOAD, 2);
            mv.visitLdcInsn(methodId);
            mv.visitMethodInsn(INVOKEINTERFACE, "java/util/Set", "contains", "(Ljava/lang/Object;)Z");
            Label l3 = new Label();
            mv.visitJumpInsn(IFEQ, l3);
            mv.visitVarInsn(ALOAD, 0);
            mv.visitInsn(ICONST_1);
            mv.visitFieldInsn(PUTFIELD, m_owner, METHOD_FLAG_PREFIX + methodId, "Z");
            mv.visitLabel(l3);
        }
    }

    mv.visitLabel(endif2);
    mv.visitInsn(RETURN);

    mv.visitMaxs(0, 0);
    mv.visitEnd();
}

From source file:org.apache.felix.ipojo.manipulation.MethodCreator.java

License:Apache License

/**
 * Create a getter method for an array.//w  w w .  j  a  v a2  s .c o m
 * @param name : field name
 * @param desc : method description
 * @param type : contained type (inside the array)
 */
private void createArraySetter(String name, String desc, Type type) {
    MethodVisitor mv = cv.visitMethod(0, "__set" + name, desc, null, null);
    mv.visitCode();

    String internalType = desc.substring(1);
    internalType = internalType.substring(0, internalType.length() - 2);

    Label l1 = new Label();
    mv.visitLabel(l1);
    mv.visitVarInsn(ALOAD, 0);
    mv.visitFieldInsn(GETFIELD, m_owner, FIELD_FLAG_PREFIX + name, "Z");
    Label l2 = new Label();
    mv.visitJumpInsn(IFNE, l2);

    mv.visitVarInsn(ALOAD, 0);
    mv.visitVarInsn(ALOAD, 1);
    mv.visitFieldInsn(PUTFIELD, m_owner, name, internalType);
    mv.visitInsn(RETURN);
    mv.visitLabel(l2);

    mv.visitVarInsn(ALOAD, 0);
    mv.visitFieldInsn(GETFIELD, m_owner, IM_FIELD, "Lorg/apache/felix/ipojo/InstanceManager;");
    mv.visitVarInsn(ALOAD, 0);
    mv.visitLdcInsn(name);
    mv.visitVarInsn(ALOAD, 1);
    mv.visitMethodInsn(INVOKEVIRTUAL, "org/apache/felix/ipojo/InstanceManager", SET,
            "(Ljava/lang/Object;Ljava/lang/String;Ljava/lang/Object;)V");

    mv.visitInsn(RETURN);

    // End
    mv.visitMaxs(0, 0);
    mv.visitEnd();
}

From source file:org.apache.felix.ipojo.manipulation.MethodCreator.java

License:Apache License

/**
 * Create a setter method for an array./*from  w w  w .j  av  a2 s.  c  o  m*/
 * @param name : field name
 * @param desc : method description
 * @param type : contained type (inside the array)
 */
private void createArrayGetter(String name, String desc, Type type) {
    String methodName = "__get" + name;
    MethodVisitor mv = cv.visitMethod(0, methodName, desc, null, null);
    mv.visitCode();

    String internalType = desc.substring(2);

    mv.visitVarInsn(ALOAD, 0);
    mv.visitFieldInsn(GETFIELD, m_owner, FIELD_FLAG_PREFIX + name, "Z");
    Label l1 = new Label();
    mv.visitJumpInsn(IFNE, l1);
    mv.visitVarInsn(ALOAD, 0);
    mv.visitFieldInsn(GETFIELD, m_owner, name, internalType);
    mv.visitInsn(ARETURN);
    mv.visitLabel(l1);

    mv.visitVarInsn(ALOAD, 0);
    mv.visitFieldInsn(GETFIELD, m_owner, IM_FIELD, "Lorg/apache/felix/ipojo/InstanceManager;");
    mv.visitVarInsn(ALOAD, 0);
    mv.visitLdcInsn(name);
    mv.visitMethodInsn(INVOKEVIRTUAL, "org/apache/felix/ipojo/InstanceManager", GET,
            "(Ljava/lang/Object;Ljava/lang/String;)Ljava/lang/Object;");
    mv.visitTypeInsn(CHECKCAST, internalType);
    mv.visitInsn(ARETURN);

    // End
    mv.visitMaxs(0, 0);
    mv.visitEnd();
}

From source file:org.apache.felix.ipojo.manipulation.MethodCreator.java

License:Apache License

/**
 * Create the getter for a field./*from ww w . j ava2s  .co m*/
 * @param name : field of the dependency
 * @param desc : description of the getter method
 * @param type : type to return
 */
private void createSimpleGetter(String name, String desc, Type type) {
    String methodName = "__get" + name;
    MethodVisitor mv = cv.visitMethod(0, methodName, desc, null, null);
    mv.visitCode();

    switch (type.getSort()) {
    case Type.BOOLEAN:
    case Type.CHAR:
    case Type.BYTE:
    case Type.SHORT:
    case Type.INT:

        String internalName = ManipulationProperty.PRIMITIVE_BOXING_INFORMATION[type.getSort()][0];
        String boxingType = ManipulationProperty.PRIMITIVE_BOXING_INFORMATION[type.getSort()][1];
        String unboxingMethod = ManipulationProperty.PRIMITIVE_BOXING_INFORMATION[type.getSort()][2];

        Label l0 = new Label();
        mv.visitLabel(l0);

        mv.visitVarInsn(ALOAD, 0);
        mv.visitFieldInsn(GETFIELD, m_owner, FIELD_FLAG_PREFIX + name, "Z");
        Label l1 = new Label();
        mv.visitJumpInsn(IFNE, l1);
        mv.visitVarInsn(ALOAD, 0);
        mv.visitFieldInsn(GETFIELD, m_owner, name, internalName);
        mv.visitInsn(IRETURN);

        mv.visitLabel(l1);

        mv.visitVarInsn(ALOAD, 0);
        mv.visitFieldInsn(GETFIELD, m_owner, IM_FIELD, "Lorg/apache/felix/ipojo/InstanceManager;");
        mv.visitVarInsn(ALOAD, 0);
        mv.visitLdcInsn(name);
        mv.visitMethodInsn(INVOKEVIRTUAL, "org/apache/felix/ipojo/InstanceManager", GET,
                "(Ljava/lang/Object;Ljava/lang/String;)Ljava/lang/Object;");
        mv.visitVarInsn(ASTORE, 1);

        mv.visitVarInsn(ALOAD, 1);
        mv.visitTypeInsn(CHECKCAST, boxingType);
        mv.visitVarInsn(ASTORE, 2);

        mv.visitVarInsn(ALOAD, 2);
        mv.visitMethodInsn(INVOKEVIRTUAL, boxingType, unboxingMethod, "()" + internalName);
        mv.visitInsn(type.getOpcode(IRETURN));
        break;

    case Type.LONG:
        internalName = ManipulationProperty.PRIMITIVE_BOXING_INFORMATION[type.getSort()][0];
        boxingType = ManipulationProperty.PRIMITIVE_BOXING_INFORMATION[type.getSort()][1];
        unboxingMethod = ManipulationProperty.PRIMITIVE_BOXING_INFORMATION[type.getSort()][2];

        l0 = new Label();
        mv.visitLabel(l0);
        mv.visitVarInsn(ALOAD, 0);
        mv.visitFieldInsn(GETFIELD, m_owner, FIELD_FLAG_PREFIX + name, "Z");
        l1 = new Label();
        mv.visitJumpInsn(IFNE, l1);
        mv.visitVarInsn(ALOAD, 0);
        mv.visitFieldInsn(GETFIELD, m_owner, name, internalName);
        mv.visitInsn(LRETURN);
        mv.visitLabel(l1);

        mv.visitVarInsn(ALOAD, 0);
        mv.visitFieldInsn(GETFIELD, m_owner, IM_FIELD, "Lorg/apache/felix/ipojo/InstanceManager;");
        mv.visitVarInsn(ALOAD, 0);
        mv.visitLdcInsn(name);
        mv.visitMethodInsn(INVOKEVIRTUAL, "org/apache/felix/ipojo/InstanceManager", GET,
                "(Ljava/lang/Object;Ljava/lang/String;)Ljava/lang/Object;");
        mv.visitVarInsn(ASTORE, 1);

        mv.visitVarInsn(ALOAD, 1);
        mv.visitTypeInsn(CHECKCAST, boxingType);
        mv.visitVarInsn(ASTORE, 2);

        mv.visitVarInsn(ALOAD, 2);
        mv.visitMethodInsn(INVOKEVIRTUAL, boxingType, unboxingMethod, "()" + internalName);
        mv.visitInsn(LRETURN);

        break;

    case Type.DOUBLE:
        internalName = ManipulationProperty.PRIMITIVE_BOXING_INFORMATION[type.getSort()][0];
        boxingType = ManipulationProperty.PRIMITIVE_BOXING_INFORMATION[type.getSort()][1];
        unboxingMethod = ManipulationProperty.PRIMITIVE_BOXING_INFORMATION[type.getSort()][2];

        l0 = new Label();
        mv.visitLabel(l0);
        mv.visitVarInsn(ALOAD, 0);
        mv.visitFieldInsn(GETFIELD, m_owner, FIELD_FLAG_PREFIX + name, "Z");
        l1 = new Label();
        mv.visitJumpInsn(IFNE, l1);
        mv.visitVarInsn(ALOAD, 0);
        mv.visitFieldInsn(GETFIELD, m_owner, name, internalName);
        mv.visitInsn(DRETURN);
        mv.visitLabel(l1);

        mv.visitVarInsn(ALOAD, 0);
        mv.visitFieldInsn(GETFIELD, m_owner, IM_FIELD, "Lorg/apache/felix/ipojo/InstanceManager;");
        mv.visitVarInsn(ALOAD, 0);
        mv.visitLdcInsn(name);
        mv.visitMethodInsn(INVOKEVIRTUAL, "org/apache/felix/ipojo/InstanceManager", GET,
                "(Ljava/lang/Object;Ljava/lang/String;)Ljava/lang/Object;");
        mv.visitVarInsn(ASTORE, 1);

        mv.visitVarInsn(ALOAD, 1);
        mv.visitTypeInsn(CHECKCAST, boxingType);
        mv.visitVarInsn(ASTORE, 2);

        mv.visitVarInsn(ALOAD, 2);
        mv.visitMethodInsn(INVOKEVIRTUAL, boxingType, unboxingMethod, "()" + internalName);
        mv.visitInsn(DRETURN);

        break;

    case Type.FLOAT:
        internalName = ManipulationProperty.PRIMITIVE_BOXING_INFORMATION[type.getSort()][0];
        boxingType = ManipulationProperty.PRIMITIVE_BOXING_INFORMATION[type.getSort()][1];
        unboxingMethod = ManipulationProperty.PRIMITIVE_BOXING_INFORMATION[type.getSort()][2];

        l0 = new Label();
        mv.visitLabel(l0);
        mv.visitVarInsn(ALOAD, 0);
        mv.visitFieldInsn(GETFIELD, m_owner, FIELD_FLAG_PREFIX + name, "Z");
        l1 = new Label();
        mv.visitJumpInsn(IFNE, l1);
        mv.visitVarInsn(ALOAD, 0);
        mv.visitFieldInsn(GETFIELD, m_owner, name, internalName);
        mv.visitInsn(FRETURN);
        mv.visitLabel(l1);

        mv.visitVarInsn(ALOAD, 0);
        mv.visitFieldInsn(GETFIELD, m_owner, IM_FIELD, "Lorg/apache/felix/ipojo/InstanceManager;");
        mv.visitVarInsn(ALOAD, 0);
        mv.visitLdcInsn(name);
        mv.visitMethodInsn(INVOKEVIRTUAL, "org/apache/felix/ipojo/InstanceManager", GET,
                "(Ljava/lang/Object;Ljava/lang/String;)Ljava/lang/Object;");
        mv.visitVarInsn(ASTORE, 1);

        mv.visitVarInsn(ALOAD, 1);
        mv.visitTypeInsn(CHECKCAST, boxingType);
        mv.visitVarInsn(ASTORE, 2);

        mv.visitVarInsn(ALOAD, 2);
        mv.visitMethodInsn(INVOKEVIRTUAL, boxingType, unboxingMethod, "()" + internalName);
        mv.visitInsn(FRETURN);

        break;

    case Type.OBJECT:
        l0 = new Label();
        mv.visitLabel(l0);
        mv.visitVarInsn(ALOAD, 0);
        mv.visitFieldInsn(GETFIELD, m_owner, FIELD_FLAG_PREFIX + name, "Z");
        l1 = new Label();
        mv.visitJumpInsn(IFNE, l1);
        mv.visitVarInsn(ALOAD, 0);
        mv.visitFieldInsn(GETFIELD, m_owner, name, "L" + type.getInternalName() + ";");
        mv.visitInsn(ARETURN);
        mv.visitLabel(l1);

        mv.visitVarInsn(ALOAD, 0);
        mv.visitFieldInsn(GETFIELD, m_owner, IM_FIELD, "Lorg/apache/felix/ipojo/InstanceManager;");
        mv.visitVarInsn(ALOAD, 0);
        mv.visitLdcInsn(name);
        mv.visitMethodInsn(INVOKEVIRTUAL, "org/apache/felix/ipojo/InstanceManager", GET,
                "(Ljava/lang/Object;Ljava/lang/String;)Ljava/lang/Object;");
        mv.visitTypeInsn(CHECKCAST, type.getInternalName());
        mv.visitInsn(ARETURN);

        break;

    default:
        ManipulationProperty.getLogger().log(ManipulationProperty.SEVERE,
                "Manipulation problem in " + m_owner + " : a type is not implemented : " + type);
        break;
    }

    mv.visitMaxs(0, 0);
    mv.visitEnd();
}

From source file:org.apache.felix.ipojo.manipulation.MethodCreator.java

License:Apache License

/**
 * Create the setter method for one property. The name of the method is _set+name of the field
 * @param name : name of the field representing a property
 * @param desc : description of the setter method
 * @param type : type of the property//from w ww  .  j a v a 2s .  c  o  m
 */
private void createSimpleSetter(String name, String desc, Type type) {
    MethodVisitor mv = cv.visitMethod(0, "__set" + name, desc, null, null);
    mv.visitCode();

    switch (type.getSort()) {
    case Type.BOOLEAN:
    case Type.CHAR:
    case Type.BYTE:
    case Type.SHORT:
    case Type.INT:
    case Type.FLOAT:
        String internalName = ManipulationProperty.PRIMITIVE_BOXING_INFORMATION[type.getSort()][0];
        String boxingType = ManipulationProperty.PRIMITIVE_BOXING_INFORMATION[type.getSort()][1];

        Label l1 = new Label();
        mv.visitLabel(l1);

        mv.visitVarInsn(ALOAD, 0);
        mv.visitFieldInsn(GETFIELD, m_owner, FIELD_FLAG_PREFIX + name, "Z");
        Label l22 = new Label();
        mv.visitJumpInsn(IFNE, l22);

        mv.visitVarInsn(ALOAD, 0);
        mv.visitVarInsn(type.getOpcode(ILOAD), 1);
        mv.visitFieldInsn(PUTFIELD, m_owner, name, internalName);
        mv.visitInsn(RETURN);
        mv.visitLabel(l22);

        mv.visitTypeInsn(NEW, boxingType);
        mv.visitInsn(DUP);
        mv.visitVarInsn(type.getOpcode(ILOAD), 1);
        mv.visitMethodInsn(INVOKESPECIAL, boxingType, "<init>", "(" + internalName + ")V");
        mv.visitVarInsn(ASTORE, 2);

        Label l2 = new Label();
        mv.visitLabel(l2);
        mv.visitVarInsn(ALOAD, 0);
        mv.visitFieldInsn(GETFIELD, m_owner, IM_FIELD, "Lorg/apache/felix/ipojo/InstanceManager;");
        mv.visitVarInsn(ALOAD, 0);
        mv.visitLdcInsn(name);
        mv.visitVarInsn(ALOAD, 2);
        mv.visitMethodInsn(INVOKEVIRTUAL, "org/apache/felix/ipojo/InstanceManager", SET,
                "(Ljava/lang/Object;Ljava/lang/String;Ljava/lang/Object;)V");

        Label l3 = new Label();
        mv.visitLabel(l3);
        mv.visitInsn(RETURN);
        break;

    case Type.LONG:
    case Type.DOUBLE:
        internalName = ManipulationProperty.PRIMITIVE_BOXING_INFORMATION[type.getSort()][0];
        boxingType = ManipulationProperty.PRIMITIVE_BOXING_INFORMATION[type.getSort()][1];

        l1 = new Label();
        mv.visitLabel(l1);

        mv.visitVarInsn(ALOAD, 0);
        mv.visitFieldInsn(GETFIELD, m_owner, FIELD_FLAG_PREFIX + name, "Z");
        Label l23 = new Label();
        mv.visitJumpInsn(IFNE, l23);

        mv.visitVarInsn(ALOAD, 0);
        mv.visitVarInsn(type.getOpcode(ILOAD), 1);
        mv.visitFieldInsn(PUTFIELD, m_owner, name, internalName);
        mv.visitInsn(RETURN);
        mv.visitLabel(l23);

        mv.visitTypeInsn(NEW, boxingType);
        mv.visitInsn(DUP);
        mv.visitVarInsn(type.getOpcode(ILOAD), 1);
        mv.visitMethodInsn(INVOKESPECIAL, boxingType, "<init>", "(" + internalName + ")V");
        mv.visitVarInsn(ASTORE, 3); // Double space

        l2 = new Label();
        mv.visitLabel(l2);
        mv.visitVarInsn(ALOAD, 0);
        mv.visitFieldInsn(GETFIELD, m_owner, IM_FIELD, "Lorg/apache/felix/ipojo/InstanceManager;");
        mv.visitVarInsn(ALOAD, 0);
        mv.visitLdcInsn(name);
        mv.visitVarInsn(ALOAD, 3);
        mv.visitMethodInsn(INVOKEVIRTUAL, "org/apache/felix/ipojo/InstanceManager", SET,
                "(Ljava/lang/Object;Ljava/lang/String;Ljava/lang/Object;)V");

        l3 = new Label();
        mv.visitLabel(l3);
        mv.visitInsn(RETURN);
        break;

    case Type.OBJECT:
        mv.visitVarInsn(ALOAD, 0);
        mv.visitFieldInsn(GETFIELD, m_owner, FIELD_FLAG_PREFIX + name, "Z");
        Label l24 = new Label();
        mv.visitJumpInsn(IFNE, l24);

        mv.visitVarInsn(ALOAD, 0);
        mv.visitVarInsn(ALOAD, 1);
        mv.visitFieldInsn(PUTFIELD, m_owner, name, "L" + type.getInternalName() + ";");
        mv.visitInsn(RETURN);
        mv.visitLabel(l24);

        mv.visitVarInsn(ALOAD, 0);
        mv.visitFieldInsn(GETFIELD, m_owner, IM_FIELD, "Lorg/apache/felix/ipojo/InstanceManager;");
        mv.visitVarInsn(ALOAD, 0);
        mv.visitLdcInsn(name);
        mv.visitVarInsn(ALOAD, 1);
        mv.visitMethodInsn(INVOKEVIRTUAL, "org/apache/felix/ipojo/InstanceManager", SET,
                "(Ljava/lang/Object;Ljava/lang/String;Ljava/lang/Object;)V");

        mv.visitInsn(RETURN);
        break;
    default:
        ManipulationProperty.getLogger().log(ManipulationProperty.SEVERE,
                "Manipulation Error : Cannot create the setter method for the field : " + name + " (" + type
                        + ")");
        break;
    }

    mv.visitMaxs(0, 0);
    mv.visitEnd();
}

From source file:org.apache.s4.core.gen.OverloadDispatcherGenerator.java

License:Apache License

private void addErrorLogStatement(MethodVisitor mv2) {
    mv2.visitVarInsn(ALOAD, 0);//www.j ava2s.c  o m
    mv2.visitMethodInsn(INVOKEVIRTUAL, "java/lang/Object", "getClass", "()Ljava/lang/Class;");
    mv2.visitMethodInsn(INVOKESTATIC, "org/slf4j/LoggerFactory", "getLogger",
            "(Ljava/lang/Class;)Lorg/slf4j/Logger;");
    mv2.visitTypeInsn(NEW, "java/lang/StringBuilder");
    mv2.visitInsn(DUP);
    mv2.visitLdcInsn("Cannot dispatch event of type [");
    mv2.visitMethodInsn(INVOKESPECIAL, "java/lang/StringBuilder", "<init>", "(Ljava/lang/String;)V");
    mv2.visitVarInsn(ALOAD, 2);
    mv2.visitMethodInsn(INVOKEVIRTUAL, "java/lang/Object", "getClass", "()Ljava/lang/Class;");
    mv2.visitMethodInsn(INVOKEVIRTUAL, "java/lang/Class", "getName", "()Ljava/lang/String;");
    mv2.visitMethodInsn(INVOKEVIRTUAL, "java/lang/StringBuilder", "append",
            "(Ljava/lang/String;)Ljava/lang/StringBuilder;");
    mv2.visitLdcInsn("] to PE of type [");
    mv2.visitMethodInsn(INVOKEVIRTUAL, "java/lang/StringBuilder", "append",
            "(Ljava/lang/String;)Ljava/lang/StringBuilder;");
    mv2.visitVarInsn(ALOAD, 1);
    mv2.visitMethodInsn(INVOKEVIRTUAL, "java/lang/Object", "getClass", "()Ljava/lang/Class;");
    mv2.visitMethodInsn(INVOKEVIRTUAL, "java/lang/Class", "getName", "()Ljava/lang/String;");
    mv2.visitMethodInsn(INVOKEVIRTUAL, "java/lang/StringBuilder", "append",
            "(Ljava/lang/String;)Ljava/lang/StringBuilder;");
    mv2.visitLdcInsn("] : no matching onEvent method found");
    mv2.visitMethodInsn(INVOKEVIRTUAL, "java/lang/StringBuilder", "append",
            "(Ljava/lang/String;)Ljava/lang/StringBuilder;");
    mv2.visitMethodInsn(INVOKEVIRTUAL, "java/lang/StringBuilder", "toString", "()Ljava/lang/String;");
    mv2.visitMethodInsn(INVOKEINTERFACE, "org/slf4j/Logger", "error", "(Ljava/lang/String;)V");
}

From source file:org.ballerinalang.nativeimpl.jvm.methodvisitor.VisitLdcInsn.java

License:Open Source License

public static void visitLdcInsn(Strand strand, ObjectValue oMv, Object oValue) {
    MethodVisitor mv = ASMUtil.getRefArgumentNativeData(oMv);
    if (Long.class.equals(oValue.getClass())) {
        long longVal = (Long) oValue;
        mv.visitLdcInsn(longVal);
    } else if (Double.class.equals(oValue.getClass())) {
        double doubleVal = (Double) oValue;
        mv.visitLdcInsn(doubleVal);/*from w w w.  jav a 2s . c  om*/
    } else if (String.class.equals(oValue.getClass())) {
        String stringVal = (String) oValue;
        mv.visitLdcInsn(stringVal);
    } else if (Boolean.class.equals(oValue.getClass())) {
        boolean booleanValue = (Boolean) oValue;
        mv.visitLdcInsn(booleanValue);
    } else if (Integer.class.equals(oValue.getClass())) {
        int intVal = (Integer) oValue;
        mv.visitLdcInsn(intVal);
    } else {
        throw new UnsupportedOperationException();
    }
}