Interface Messager

public interface Messager

A Messager provides the way for an annotation processor to report error messages, warnings, and other notices. Elements, annotations, and annotation values can be passed to provide a location hint for the message. However, such location hints may be unavailable or only approximate.

Printing a message with an error kind will raise an error.

Note that the messages "printed" by methods in this interface may or may not appear as textual output to a location like System.out or System.err. Implementations may choose to present this information in a different fashion, such as messages in a window.

Methods

printMessage

void printMessage(Diagnostic.Kind kind,
                  CharSequence msg)

Prints a message of the specified kind.

Parameters:

kind - the kind of message

msg - the message, or an empty string if none

printMessage

void printMessage(Diagnostic.Kind kind,
                  CharSequence msg,
                  Element e)

Prints a message of the specified kind at the location of the element.

Parameters:

kind - the kind of message

msg - the message, or an empty string if none

e - the element to use as a position hint

printMessage

void printMessage(Diagnostic.Kind kind,
                  CharSequence msg,
                  Element e,
                  AnnotationMirror a)

Prints a message of the specified kind at the location of the annotation mirror of the annotated element.

Parameters:

kind - the kind of message

msg - the message, or an empty string if none

e - the annotated element

a - the annotation to use as a position hint

printMessage

void printMessage(Diagnostic.Kind kind,
                  CharSequence msg,
                  Element e,
                  AnnotationMirror a,
                  AnnotationValue v)

Prints a message of the specified kind at the location of the annotation value inside the annotation mirror of the annotated element.

Parameters:

kind - the kind of message

msg - the message, or an empty string if none

e - the annotated element

a - the annotation containing the annotation value

v - the annotation value to use as a position hint