Constructor Detail

• public ParameterTypes()

  Constructs a ParameterTypes with uninitialized parameter types.

• public ParameterTypes(Class[] pt)

  Constructs a ParameterTypes with the specified native parameter types.

  Parameters:

  pt - the native Java Class array representing method parameters

• @Deprecated
  public ParameterTypes(String[] pt)

  Constructs a ParameterTypes from class names.

  deprecated:

  Use ParameterTypes(Class[]) instead

  throws:

  NoClassDefFoundError if any class name cannot be resolved

  Parameters:

  pt - an array of fully qualified class names

• public ParameterTypes(CachedClass[] pt)

  Constructs a ParameterTypes with the specified cached parameter types.

  Parameters:

  pt - an array of cached class objects representing method parameters

Method Detail

• public final Object[] coerceArgumentsToClasses(Object[] arguments)

  Coerces arguments to match the expected parameter types, handling type conversions and varargs expansion. First corrects argument count for varargs methods, then coerces each argument to its target type.

  throws:

  IllegalArgumentException if null is passed where a primitive type is expected

  Parameters:

  arguments - the arguments to coerce

  Returns:

  the coerced argument array

• public Object[] correctArguments(Object[] arguments)

  Corrects argument count to match method signature, handling varargs expansion and null filling. Transforms arguments to match the expected parameter count by expanding varargs arrays or filling nulls.

  Parameters:

  arguments - the arguments to correct

  Returns:

  the corrected argument array

• public Class[] getNativeParameterTypes()

  Returns the native Java Class objects for the parameter types. Lazily initializes the types on first access.

  Returns:

  an array of native parameter classes

• protected Class[] getPT()

  Protected method subclasses override to provide parameter types. Default implementation throws UnsupportedOperationException.

  throws:

  UnsupportedOperationException if not overridden by subclass

  Returns:

  the native parameter class array

• public CachedClass[] getParameterTypes()

  Returns the cached class representations of the parameter types. Lazily initializes the types on first access.

  Returns:

  an array of cached parameter types

• public boolean isValidExactMethod(Object[] args)

  Checks if the given actual arguments exactly match this method's parameter types. All arguments must be assignable to their corresponding parameters.

  Parameters:

  args - the actual arguments to validate

  Returns:

  true if the arguments are valid for exact invocation; false otherwise

• public boolean isValidExactMethod(Class[] args)

  Checks if the given argument types exactly match this method's parameter types. All types must be assignable to their corresponding parameters.

  Parameters:

  args - the argument types to validate

  Returns:

  true if the types are valid for exact invocation; false otherwise

• public boolean isValidMethod(Class[] argumentTypes)

  Checks if the given argument types are valid for this method, considering varargs conversion.

  Parameters:

  argumentTypes - the argument types to validate

  Returns:

  true if the types match the method parameters; false otherwise

• public boolean isValidMethod(Object[] arguments)

  Checks if the given actual arguments are valid for this method, considering varargs conversion.

  Parameters:

  arguments - the actual arguments to validate

  Returns:

  true if the arguments are valid for this method; false otherwise

• public boolean isVargsMethod()

  Returns whether this represents a varargs (variable arguments) method.

  Returns:

  true if the last parameter is an array type, false otherwise

• public boolean isVargsMethod(Object[] arguments)

  Checks if this varargs method should treat arguments as a varargs invocation.

  Parameters:

  arguments - the actual arguments passed to the method

  Returns:

  true if varargs conversion is needed, false otherwise

• protected final void setParametersTypes(CachedClass[] pt)

  Sets the cached parameter types and determines if this is a varargs method.

  Parameters:

  pt - the array of cached parameter types