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135 lines
4.1 KiB
135 lines
4.1 KiB
/*
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* Copyright (c) 2005, 2012, Oracle and/or its affiliates. All rights reserved.
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* ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*/
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package javax.annotation.processing;
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import java.util.Map;
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import java.util.Locale;
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import javax.lang.model.SourceVersion;
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import javax.lang.model.util.Elements;
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import javax.lang.model.util.Types;
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/**
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* An annotation processing tool framework will {@linkplain
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* Processor#init provide an annotation processor with an object
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* implementing this interface} so the processor can use facilities
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* provided by the framework to write new files, report error
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* messages, and find other utilities.
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*
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* <p>Third parties may wish to provide value-add wrappers around the
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* facility objects from this interface, for example a {@code Filer}
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* extension that allows multiple processors to coordinate writing out
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* a single source file. To enable this, for processors running in a
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* context where their side effects via the API could be visible to
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* each other, the tool infrastructure must provide corresponding
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* facility objects that are {@code .equals}, {@code Filer}s that are
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* {@code .equals}, and so on. In addition, the tool invocation must
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* be able to be configured such that from the perspective of the
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* running annotation processors, at least the chosen subset of helper
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* classes are viewed as being loaded by the same class loader.
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* (Since the facility objects manage shared state, the implementation
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* of a wrapper class must know whether or not the same base facility
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* object has been wrapped before.)
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*
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* @author Joseph D. Darcy
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* @author Scott Seligman
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* @author Peter von der Ahé
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* @since 1.6
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*/
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public interface ProcessingEnvironment {
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/**
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* Returns the processor-specific options passed to the annotation
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* processing tool. Options are returned in the form of a map from
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* option name to option value. For an option with no value, the
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* corresponding value in the map is {@code null}.
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*
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* <p>See documentation of the particular tool infrastructure
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* being used for details on how to pass in processor-specific
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* options. For example, a command-line implementation may
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* distinguish processor-specific options by prefixing them with a
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* known string like {@code "-A"}; other tool implementations may
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* follow different conventions or provide alternative mechanisms.
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* A given implementation may also provide implementation-specific
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* ways of finding options passed to the tool in addition to the
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* processor-specific options.
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*
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* @return the processor-specific options passed to the tool
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*/
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Map<String,String> getOptions();
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/**
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* Returns the messager used to report errors, warnings, and other
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* notices.
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*
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* @return the messager
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*/
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Messager getMessager();
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/**
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* Returns the filer used to create new source, class, or auxiliary
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* files.
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*
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* @return the filer
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*/
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Filer getFiler();
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/**
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* Returns an implementation of some utility methods for
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* operating on elements
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*
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* @return element utilities
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*/
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Elements getElementUtils();
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/**
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* Returns an implementation of some utility methods for
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* operating on types.
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*
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* @return type utilities
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*/
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Types getTypeUtils();
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/**
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* Returns the source version that any generated {@linkplain
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* Filer#createSourceFile source} and {@linkplain
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* Filer#createClassFile class} files should conform to.
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*
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* @return the source version to which generated source and class
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* files should conform to
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* @see Processor#getSupportedSourceVersion
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*/
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SourceVersion getSourceVersion();
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/**
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* Returns the current locale or {@code null} if no locale is in
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* effect. The locale can be be used to provide localized
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* {@linkplain Messager messages}.
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*
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* @return the current locale or {@code null} if no locale is in
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* effect
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*/
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Locale getLocale();
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}
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