io.micronaut.inject.visitor

Interface VisitorContext

All Superinterfaces:

ClassWriterOutputVisitor, ConvertibleValues<java.lang.Object>, java.lang.Iterable<java.util.Map.Entry<java.lang.String,java.lang.Object>>, MutableConvertibleValues<java.lang.Object>, ValueResolver<java.lang.CharSequence>

All Known Implementing Classes:

GroovyVisitorContext, JavaVisitorContext

public interface VisitorContext
extends MutableConvertibleValues<java.lang.Object>, ClassWriterOutputVisitor

Provides a way for TypeElementVisitor classes to log messages during compilation and fail compilation.

Since:

1.0

Author:

James Kleeh, Graeme Rocher

Field Summary

Fields

Modifier and Type	Field and Description
static java.lang.String	MICRONAUT_BASE_OPTION_NAME
static java.lang.String	MICRONAUT_PROCESSING_GROUP
static java.lang.String	MICRONAUT_PROCESSING_MODULE
static java.lang.String	MICRONAUT_PROCESSING_PROJECT_DIR

Fields inherited from interface io.micronaut.core.convert.value.ConvertibleValues

EMPTY

Method Summary

Modifier and Type	Method and Description
default void	addGeneratedResource(java.lang.String resource) Some TypeElementVisitors generate classpath resources that other visitors might be interested in.
void	fail(java.lang.String message, Element element) Allows failing compilation for a given element with the given message.
default java.util.Optional<ClassElement>	getClassElement(java.lang.Class<?> type) This method will lookup another class element by name.
default java.util.Optional<ClassElement>	getClassElement(java.lang.String name) This method will lookup another class element by name.
default ClassElement[]	getClassElements(java.lang.String aPackage, java.lang.String... stereotypes) Find all the classes within the given package and having the given annotation.
default java.util.Optional<java.nio.file.Path>	getClassesOutputPath() Provide the URI to the annotation processing classes output directory, i.e.
default java.lang.Iterable<java.net.URL>	getClasspathResources(java.lang.String path) Obtain a set of resources from the user classpath.
default java.util.Collection<java.lang.String>	getGeneratedResources() Provide a collection of generated classpath resources that other TypeElement visitors might want to consume.
default java.util.Map<java.lang.String,java.lang.String>	getOptions() The annotation processor environment custom options.
default java.util.Optional<java.nio.file.Path>	getProjectDir() Obtain the project directory.
void	info(java.lang.String message) Allows printing informational messages.
void	info(java.lang.String message, Element element) Allows printing informational messages.
java.util.Optional<GeneratedFile>	visitGeneratedFile(java.lang.String path) Visit a file that will be located within the generated source directory.
java.util.Optional<GeneratedFile>	visitMetaInfFile(java.lang.String path) Visit a file within the META-INF directory.
void	warn(java.lang.String message, Element element) Allows printing a warning for the given message and element.

Methods inherited from interface io.micronaut.core.convert.value.MutableConvertibleValues

clear, of, put, putAll, putAll, remove

Methods inherited from interface io.micronaut.core.convert.value.ConvertibleValues

asMap, asMap, asProperties, contains, empty, forEach, getValue, getValueType, isEmpty, iterator, names, subMap, subMap, subMap, values

Methods inherited from interface io.micronaut.core.value.ValueResolver

get, get, get, get

Methods inherited from interface java.lang.Iterable

forEach, spliterator

Methods inherited from interface io.micronaut.inject.writer.ClassWriterOutputVisitor

finish, getServiceEntries, visitClass, visitClass, visitClass, visitServiceDescriptor, visitServiceDescriptor

Field Detail

MICRONAUT_BASE_OPTION_NAME

static final java.lang.String MICRONAUT_BASE_OPTION_NAME

See Also:

Constant Field Values

MICRONAUT_PROCESSING_PROJECT_DIR

static final java.lang.String MICRONAUT_PROCESSING_PROJECT_DIR

See Also:

Constant Field Values

MICRONAUT_PROCESSING_GROUP

static final java.lang.String MICRONAUT_PROCESSING_GROUP

See Also:

Constant Field Values

MICRONAUT_PROCESSING_MODULE

static final java.lang.String MICRONAUT_PROCESSING_MODULE

See Also:

Constant Field Values

Method Detail

info

void info(java.lang.String message,
          @Nullable
          Element element)

Allows printing informational messages.

Parameters:

message - The message

element - The element

info

void info(java.lang.String message)

Allows printing informational messages.

Parameters:

message - The message

fail

void fail(java.lang.String message,
          @Nullable
          Element element)

Allows failing compilation for a given element with the given message.

Parameters:

message - The message

element - The element

warn

void warn(java.lang.String message,
          @Nullable
          Element element)

Allows printing a warning for the given message and element.

Parameters:

message - The message

element - The element

visitMetaInfFile

java.util.Optional<GeneratedFile> visitMetaInfFile(java.lang.String path)

Visit a file within the META-INF directory.

Specified by:

visitMetaInfFile in interface ClassWriterOutputVisitor

Parameters:

path - The path to the file

Returns:

An optional file it was possible to create it

visitGeneratedFile

java.util.Optional<GeneratedFile> visitGeneratedFile(java.lang.String path)

Visit a file that will be located within the generated source directory.

Specified by:

visitGeneratedFile in interface ClassWriterOutputVisitor

Parameters:

path - The path to the file

Returns:

An optional file it was possible to create it

getClasspathResources

@NonNull
default java.lang.Iterable<java.net.URL> getClasspathResources(@NonNull
                                                                        java.lang.String path)

Obtain a set of resources from the user classpath.

Parameters:

path - The path

Returns:

An iterable of resources

getProjectDir

default java.util.Optional<java.nio.file.Path> getProjectDir()

Obtain the project directory.

Returns:

An optional wrapping the project directory

getClassesOutputPath

default java.util.Optional<java.nio.file.Path> getClassesOutputPath()

Provide the URI to the annotation processing classes output directory, i.e. the parent of META-INF.

This might, for example, be used as a convenience for TypeElementVisitor classes to provide relative path strings to addGeneratedResource(String)

 Path resource = ... // absolute path to the resource
 Optional classesOutputURI = visitorContext.getClassesOutputUri();
 if (classesOutputURI.isPresent()) {
     // path to resource, relative to classes output
     Path relativePath = classesOutputURI.get().relativize(resource)
     visitorContext.addGeneratedResource(relativePath.toString());
 }
 

Returns:

URI pointing to the classes output directory

getClassElement

default java.util.Optional<ClassElement> getClassElement(java.lang.String name)

This method will lookup another class element by name. If it cannot be found an empty optional will be returned.

Parameters:

name - The name

Returns:

The class element

getClassElement

default java.util.Optional<ClassElement> getClassElement(java.lang.Class<?> type)

This method will lookup another class element by name. If it cannot be found an empty optional will be returned.

Parameters:

type - The name

Returns:

The class element

getClassElements

@NonNull
default ClassElement[] getClassElements(@NonNull
                                                 java.lang.String aPackage,
                                                 @NonNull
                                                 java.lang.String... stereotypes)

Find all the classes within the given package and having the given annotation.

Parameters:

aPackage - The package

stereotypes - The stereotypes

Returns:

The class elements

getOptions

default java.util.Map<java.lang.String,java.lang.String> getOptions()

The annotation processor environment custom options.

All options names MUST start with MICRONAUT_BASE_OPTION_NAME

Returns:

A Map with annotation processor runtime options

See Also:

ProcessingEnvironment.getOptions()

getGeneratedResources

default java.util.Collection<java.lang.String> getGeneratedResources()

Provide a collection of generated classpath resources that other TypeElement visitors might want to consume. The generated resources are intended to be strings paths relative to the classpath root.

Returns:

a possibly empty collection of resource paths

addGeneratedResource

default void addGeneratedResource(java.lang.String resource)

Some TypeElementVisitors generate classpath resources that other visitors might be interested in. The generated resources are intended to be strings paths relative to the classpath root

Parameters:

resource - the relative path to add