Exemplo n.º 1
0
 /**
  * Transforms the given method type into a stack manipulation that loads its type onto the operand
  * stack.
  *
  * @param methodType The method type that should be loaded onto the operand stack.
  * @return A stack manipulation that loads the given method type.
  */
 public static StackManipulation of(JavaInstance.MethodType methodType) {
   Type[] parameterType = new Type[methodType.getParameterTypes().size()];
   int index = 0;
   for (TypeDescription typeDescription : methodType.getParameterTypes()) {
     parameterType[index++] = Type.getType(typeDescription.getDescriptor());
   }
   return new MethodTypeConstant(
       Type.getMethodType(
           Type.getType(methodType.getReturnType().getDescriptor()), parameterType));
 }
Exemplo n.º 2
0
 /**
  * Returns a fixed value from any intercepted method. The fixed value is stored in the constant
  * pool if this is possible. Java is capable of storing any primitive value, {@link String} values
  * and {@link Class} references in the constant pool. Since Java 7, {@code MethodHandle} as well
  * as {@code MethodType} references are also supported. Alternatively, the fixed value is stored
  * in a static field.
  *
  * <p>When a value is stored in the class's constant pool, its identity is lost. If an object's
  * identity is important, the {@link FixedValue#reference(Object)} method should be used instead.
  *
  * @param fixedValue The fixed value to return from the method.
  * @return An implementation for the given {@code fixedValue}.
  */
 public static AssignerConfigurable value(Object fixedValue) {
   Class<?> type = fixedValue.getClass();
   if (type == String.class) {
     return new ForPoolValue(
         new TextConstant((String) fixedValue),
         TypeDescription.STRING,
         Assigner.DEFAULT,
         Assigner.Typing.STATIC);
   } else if (type == Class.class) {
     return new ForPoolValue(
         ClassConstant.of(new TypeDescription.ForLoadedType((Class<?>) fixedValue)),
         TypeDescription.CLASS,
         Assigner.DEFAULT,
         Assigner.Typing.STATIC);
   } else if (type == Boolean.class) {
     return new ForPoolValue(
         IntegerConstant.forValue((Boolean) fixedValue),
         new TypeDescription.ForLoadedType(boolean.class),
         Assigner.DEFAULT,
         Assigner.Typing.STATIC);
   } else if (type == Byte.class) {
     return new ForPoolValue(
         IntegerConstant.forValue((Byte) fixedValue),
         new TypeDescription.ForLoadedType(byte.class),
         Assigner.DEFAULT,
         Assigner.Typing.STATIC);
   } else if (type == Short.class) {
     return new ForPoolValue(
         IntegerConstant.forValue((Short) fixedValue),
         new TypeDescription.ForLoadedType(short.class),
         Assigner.DEFAULT,
         Assigner.Typing.STATIC);
   } else if (type == Character.class) {
     return new ForPoolValue(
         IntegerConstant.forValue((Character) fixedValue),
         new TypeDescription.ForLoadedType(char.class),
         Assigner.DEFAULT,
         Assigner.Typing.STATIC);
   } else if (type == Integer.class) {
     return new ForPoolValue(
         IntegerConstant.forValue((Integer) fixedValue),
         new TypeDescription.ForLoadedType(int.class),
         Assigner.DEFAULT,
         Assigner.Typing.STATIC);
   } else if (type == Long.class) {
     return new ForPoolValue(
         LongConstant.forValue((Long) fixedValue),
         new TypeDescription.ForLoadedType(long.class),
         Assigner.DEFAULT,
         Assigner.Typing.STATIC);
   } else if (type == Float.class) {
     return new ForPoolValue(
         FloatConstant.forValue((Float) fixedValue),
         new TypeDescription.ForLoadedType(float.class),
         Assigner.DEFAULT,
         Assigner.Typing.STATIC);
   } else if (type == Double.class) {
     return new ForPoolValue(
         DoubleConstant.forValue((Double) fixedValue),
         new TypeDescription.ForLoadedType(double.class),
         Assigner.DEFAULT,
         Assigner.Typing.STATIC);
   } else if (JavaType.METHOD_HANDLE.getTypeStub().isAssignableFrom(type)) {
     return new ForPoolValue(
         MethodHandleConstant.of(JavaInstance.MethodHandle.of(fixedValue)),
         new TypeDescription.ForLoadedType(type),
         Assigner.DEFAULT,
         Assigner.Typing.STATIC);
   } else if (JavaType.METHOD_TYPE.getTypeStub().represents(type)) {
     return new ForPoolValue(
         MethodTypeConstant.of(JavaInstance.MethodType.of(fixedValue)),
         new TypeDescription.ForLoadedType(type),
         Assigner.DEFAULT,
         Assigner.Typing.STATIC);
   } else {
     return reference(fixedValue);
   }
 }