Example usage for org.objectweb.asm Opcodes CHECKCAST

List of usage examples for org.objectweb.asm Opcodes CHECKCAST

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Introduction

In this page you can find the example usage for org.objectweb.asm Opcodes CHECKCAST.

Prototype

int CHECKCAST

To view the source code for org.objectweb.asm Opcodes CHECKCAST.

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Usage

From source file:org.coldswap.util.AutoBoxing.java

License:Open Source License

private static InsnList unboxShort() {
    InsnList il = new InsnList();
    il.add(new TypeInsnNode(Opcodes.CHECKCAST, "java/lang/Number"));
    il.add(new MethodInsnNode(Opcodes.INVOKEVIRTUAL, "java/lang/Number", "shortValue", "()S"));
    return il;//from   w w w.j a v  a  2  s .  c o  m
}

From source file:org.coldswap.util.AutoBoxing.java

License:Open Source License

private static InsnList unboxInt() {
    InsnList il = new InsnList();
    il.add(new TypeInsnNode(Opcodes.CHECKCAST, "java/lang/Number"));
    il.add(new MethodInsnNode(Opcodes.INVOKEVIRTUAL, "java/lang/Number", "intValue", "()I"));
    return il;/* ww  w.  j a  v  a  2 s  .  com*/
}

From source file:org.coldswap.util.AutoBoxing.java

License:Open Source License

private static InsnList unboxLong() {
    InsnList il = new InsnList();
    il.add(new TypeInsnNode(Opcodes.CHECKCAST, "java/lang/Number"));
    il.add(new MethodInsnNode(Opcodes.INVOKEVIRTUAL, "java/lang/Number", "longValue", "()J"));
    return il;/*from w  w  w  .ja  va2  s.com*/
}

From source file:org.coldswap.util.AutoBoxing.java

License:Open Source License

private static InsnList unboxFloat() {
    InsnList il = new InsnList();
    il.add(new TypeInsnNode(Opcodes.CHECKCAST, "java/lang/Number"));
    il.add(new MethodInsnNode(Opcodes.INVOKEVIRTUAL, "java/lang/Number", "floatValue", "()F"));
    return il;//from w ww  .j  a  va  2 s  .c om
}

From source file:org.coldswap.util.AutoBoxing.java

License:Open Source License

private static InsnList unboxDouble() {
    InsnList il = new InsnList();
    il.add(new TypeInsnNode(Opcodes.CHECKCAST, "java/lang/Number"));
    il.add(new MethodInsnNode(Opcodes.INVOKEVIRTUAL, "java/lang/Number", "doubleValue", "()D"));
    return il;//from w ww  .j  av a  2s  . c om
}

From source file:org.compass.core.util.reflection.asm.AsmReflectionFieldGenerator.java

License:Apache License

private static void createGetMethod(ClassVisitor cw, Class entryClass, Field field) {
    MethodVisitor mv = cw.visitMethod(Opcodes.ACC_PUBLIC, "get", "(Ljava/lang/Object;)Ljava/lang/Object;", null,
            new String[] { "java/lang/IllegalArgumentException", "java/lang/IllegalAccessException" });
    mv.visitCode();/*from w w  w.ja  va2  s  .c  o  m*/
    mv.visitVarInsn(Opcodes.ALOAD, 1);
    mv.visitTypeInsn(Opcodes.CHECKCAST, Type.getInternalName(entryClass));
    mv.visitFieldInsn(Opcodes.GETFIELD, Type.getInternalName(entryClass), field.getName(),
            Type.getDescriptor(field.getType()));
    boxIfNeeded(mv, field);
    mv.visitInsn(Opcodes.ARETURN);
    mv.visitMaxs(1, 2);
    mv.visitEnd();
}

From source file:org.compass.core.util.reflection.asm.AsmReflectionFieldGenerator.java

License:Apache License

private static void createSetMethod(ClassVisitor cw, Class entryClass, Field field) {
    MethodVisitor mv = cw.visitMethod(Opcodes.ACC_PUBLIC, "set", "(Ljava/lang/Object;Ljava/lang/Object;)V",
            null, new String[] { "java/lang/IllegalArgumentException", "java/lang/IllegalAccessException" });
    mv.visitCode();/*from  ww w  .  ja va  2  s.com*/
    mv.visitVarInsn(Opcodes.ALOAD, 1);
    mv.visitTypeInsn(Opcodes.CHECKCAST, Type.getInternalName(entryClass));
    mv.visitVarInsn(Opcodes.ALOAD, 2);
    castAndUnboxIfNeeded(mv, field);
    mv.visitFieldInsn(Opcodes.PUTFIELD, Type.getInternalName(entryClass), field.getName(),
            Type.getDescriptor(field.getType()));
    mv.visitInsn(Opcodes.RETURN);
    mv.visitMaxs(2, 3);
    mv.visitEnd();
}

From source file:org.compass.core.util.reflection.asm.AsmReflectionFieldGenerator.java

License:Apache License

private static void castAndUnboxIfNeeded(MethodVisitor mv, Field field) {
    if (!field.getType().isPrimitive()) {
        mv.visitTypeInsn(Opcodes.CHECKCAST, Type.getInternalName(field.getType()));
        return;/*w  w w. j a  va  2  s .co  m*/
    }

    Type type = Type.getType(field.getType());
    switch (type.getSort()) {
    case Type.BOOLEAN:
        mv.visitTypeInsn(Opcodes.CHECKCAST, "java/lang/Boolean");
        mv.visitMethodInsn(Opcodes.INVOKEVIRTUAL, "java/lang/Boolean", "booleanValue", "()Z");
        break;
    case Type.INT:
        mv.visitTypeInsn(Opcodes.CHECKCAST, "java/lang/Integer");
        mv.visitMethodInsn(Opcodes.INVOKEVIRTUAL, "java/lang/Integer", "intValue", "()I");
        break;
    case Type.SHORT:
        mv.visitTypeInsn(Opcodes.CHECKCAST, "java/lang/Short");
        mv.visitMethodInsn(Opcodes.INVOKEVIRTUAL, "java/lang/Short", "shortValue", "()S");
        break;
    case Type.LONG:
        mv.visitTypeInsn(Opcodes.CHECKCAST, "java/lang/Long");
        mv.visitMethodInsn(Opcodes.INVOKEVIRTUAL, "java/lang/Long", "longValue", "()J");
        break;
    case Type.FLOAT:
        mv.visitTypeInsn(Opcodes.CHECKCAST, "java/lang/Float");
        mv.visitMethodInsn(Opcodes.INVOKEVIRTUAL, "java/lang/Float", "floatValue", "()F");
        break;
    case Type.DOUBLE:
        mv.visitTypeInsn(Opcodes.CHECKCAST, "java/lang/Double");
        mv.visitMethodInsn(Opcodes.INVOKEVIRTUAL, "java/lang/Double", "doubleValue", "()D");
        break;
    case Type.BYTE:
        mv.visitTypeInsn(Opcodes.CHECKCAST, "java/lang/Byte");
        mv.visitMethodInsn(Opcodes.INVOKEVIRTUAL, "java/lang/Byte", "byteValue", "()B");
        break;
    case Type.CHAR:
        mv.visitTypeInsn(Opcodes.CHECKCAST, "java/lang/Character");
        mv.visitMethodInsn(Opcodes.INVOKEVIRTUAL, "java/lang/Character", "charValue", "()C");
        break;
    }
}

From source file:org.compass.core.util.reflection.asm.AsmReflectionMethodGenerator.java

License:Apache License

/**
 * Creates the method invoking wrapper method.
 *//*from  ww  w. j a va2 s  .  c  om*/
private static void createMethod(Class clazz, String name, Method refMethod, ClassWriter cw, String methodName,
        String desc, boolean argsParams, boolean returnValue, Class... parameterTypes) {

    MethodVisitor mv = cw.visitMethod(Opcodes.ACC_PUBLIC | Opcodes.ACC_VARARGS, methodName, desc, null, null);

    boolean isStatic = Modifier.isStatic(refMethod.getModifiers());
    boolean isInteface = Modifier.isInterface(refMethod.getDeclaringClass().getModifiers());

    final int invokeCode;
    if (isStatic) {
        invokeCode = Opcodes.INVOKESTATIC;
    } else {
        invokeCode = isInteface ? Opcodes.INVOKEINTERFACE : Opcodes.INVOKEVIRTUAL;
        mv.visitVarInsn(Opcodes.ALOAD, 1);
        mv.visitTypeInsn(Opcodes.CHECKCAST, Type.getInternalName(clazz));
    }

    if (argsParams) {
        for (int i = 0; i < parameterTypes.length; ++i) {
            mv.visitVarInsn(Opcodes.ALOAD, 2);
            mv.visitIntInsn(Opcodes.BIPUSH, i);
            mv.visitInsn(Opcodes.AALOAD);
            prepareParameter(mv, Type.getType(parameterTypes[i]));
        }
    } else {
        for (int i = 0; i < parameterTypes.length; ++i) {
            mv.visitVarInsn(Opcodes.ALOAD, i + 2);
            prepareParameter(mv, Type.getType(parameterTypes[i]));
        }
    }

    mv.visitMethodInsn(invokeCode, Type.getInternalName(clazz), name, Type.getMethodDescriptor(refMethod));

    if (returnValue) {
        prepareResult(mv, refMethod);
        mv.visitInsn(Opcodes.ARETURN);
    } else {
        mv.visitInsn(Opcodes.RETURN);
    }

    mv.visitMaxs(1, 1); // ignored since ClassWriter set as ClassWriter.COMPUTE_MAXS
    mv.visitEnd();
}

From source file:org.compass.core.util.reflection.asm.AsmReflectionMethodGenerator.java

License:Apache License

/**
 * Unbox the input parameters//from   w w  w . java2 s  .co  m
 */
private static void prepareParameter(MethodVisitor mv, Type type) {

    switch (type.getSort()) {
    case Type.BOOLEAN:
        mv.visitTypeInsn(Opcodes.CHECKCAST, "java/lang/Boolean");
        mv.visitMethodInsn(Opcodes.INVOKEVIRTUAL, "java/lang/Boolean", "booleanValue", "()Z");
        break;
    case Type.BYTE:
        mv.visitTypeInsn(Opcodes.CHECKCAST, "java/lang/Byte");
        mv.visitMethodInsn(Opcodes.INVOKEVIRTUAL, "java/lang/Byte", "byteValue", "()B");
        break;
    case Type.CHAR:
        mv.visitTypeInsn(Opcodes.CHECKCAST, "java/lang/Character");
        mv.visitMethodInsn(Opcodes.INVOKEVIRTUAL, "java/lang/Character", "charValue", "()C");
        break;
    case Type.SHORT:
        mv.visitTypeInsn(Opcodes.CHECKCAST, "java/lang/Short");
        mv.visitMethodInsn(Opcodes.INVOKEVIRTUAL, "java/lang/Short", "shortValue", "()S");
        break;
    case Type.INT:
        mv.visitTypeInsn(Opcodes.CHECKCAST, "java/lang/Integer");
        mv.visitMethodInsn(Opcodes.INVOKEVIRTUAL, "java/lang/Integer", "intValue", "()I");
        break;
    case Type.LONG:
        mv.visitTypeInsn(Opcodes.CHECKCAST, "java/lang/Long");
        mv.visitMethodInsn(Opcodes.INVOKEVIRTUAL, "java/lang/Long", "longValue", "()J");
        break;
    case Type.FLOAT:
        mv.visitTypeInsn(Opcodes.CHECKCAST, "java/lang/Float");
        mv.visitMethodInsn(Opcodes.INVOKEVIRTUAL, "java/lang/Float", "floatValue", "()F");
        break;
    case Type.DOUBLE:
        mv.visitTypeInsn(Opcodes.CHECKCAST, "java/lang/Double");
        mv.visitMethodInsn(Opcodes.INVOKEVIRTUAL, "java/lang/Double", "doubleValue", "()D");
        break;
    default:
        mv.visitTypeInsn(Opcodes.CHECKCAST, type.getInternalName());
        break;
    }
}