at.chrl.rebellion.impl.javacompiler

Class ClassFileManager

java.lang.Object

javax.tools.ForwardingJavaFileManager<JavaFileManager>

at.chrl.rebellion.impl.javacompiler.ClassFileManager

All Implemented Interfaces:

Closeable, Flushable, AutoCloseable, JavaFileManager, OptionChecker

public class ClassFileManager
extends ForwardingJavaFileManager<JavaFileManager>

This class extends manages loaded classes. It is also responsible for tricking compiler. Unfortunally compiler doen't work with classloaders, so we have to pass class data manually for each compilation.

Author:

SoulKeeper

Nested Class Summary

Nested classes/interfaces inherited from interface javax.tools.JavaFileManager

JavaFileManager.Location

Field Summary

Fields

Modifier and Type	Field and Description
protected ScriptClassLoaderImpl	loader Classloader that will be used to load compiled classes
protected ScriptClassLoader	parentClassLoader Parent classloader for loader

Fields inherited from class javax.tools.ForwardingJavaFileManager

fileManager

Constructor Summary

Constructors

Constructor and Description
ClassFileManager(JavaCompiler compiler, DiagnosticListener<? super JavaFileObject> listener) Creates new ClassFileManager.

Method Summary

Modifier and Type	Method and Description
void	addLibraries(Iterable<File> files) Adds list of files as libraries.
void	addLibrary(File file) Adds library file.
ScriptClassLoaderImpl	getClassLoader(JavaFileManager.Location location) Returns classloaded of this ClassFileManager.
Map<String,BinaryClass>	getCompiledClasses() Returns list of classes that were compiled by compiler related to this ClassFileManager
JavaFileObject	getJavaFileForOutput(JavaFileManager.Location location, String className, JavaFileObject.Kind kind, FileObject sibling) Returns JavaFileObject that will be used to write class data into it by compier
String	inferBinaryName(JavaFileManager.Location location, JavaFileObject file)
Iterable<JavaFileObject>	list(JavaFileManager.Location location, String packageName, Set<JavaFileObject.Kind> kinds, boolean recurse) This method overrides class resolving procedure for compiler.
void	setParentClassLoader(ScriptClassLoader classLoader) Sets paraentClassLoader for this classLoader

Methods inherited from class javax.tools.ForwardingJavaFileManager

close, flush, getFileForInput, getFileForOutput, getJavaFileForInput, handleOption, hasLocation, isSameFile, isSupportedOption

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

loader

protected ScriptClassLoaderImpl loader

Classloader that will be used to load compiled classes

parentClassLoader

protected ScriptClassLoader parentClassLoader

Parent classloader for loader

Constructor Detail

ClassFileManager

public ClassFileManager(JavaCompiler compiler,
                        DiagnosticListener<? super JavaFileObject> listener)

Creates new ClassFileManager.

Parameters:

compiler - that will be used

listener - class that will report compilation errors

Method Detail

getJavaFileForOutput

public JavaFileObject getJavaFileForOutput(JavaFileManager.Location location,
                                           String className,
                                           JavaFileObject.Kind kind,
                                           FileObject sibling)
                                    throws IOException

Returns JavaFileObject that will be used to write class data into it by compier

Specified by:

getJavaFileForOutput in interface JavaFileManager

Overrides:

getJavaFileForOutput in class ForwardingJavaFileManager<JavaFileManager>

Parameters:

location - not used

className - JavaFileObject will have this className

kind - not used

sibling - not used

Returns:

JavaFileObject that will be uesd to store compiled class data

Throws:

IOException - never thrown

getClassLoader

public ScriptClassLoaderImpl getClassLoader(JavaFileManager.Location location)

Returns classloaded of this ClassFileManager. If not exists, creates new

Specified by:

getClassLoader in interface JavaFileManager

Overrides:

getClassLoader in class ForwardingJavaFileManager<JavaFileManager>

Parameters:

location - not used

Returns:

classLoader of this ClassFileManager

setParentClassLoader

public void setParentClassLoader(ScriptClassLoader classLoader)

Sets paraentClassLoader for this classLoader

Parameters:

classLoader - parent class loader

addLibrary

public void addLibrary(File file)
                throws IOException

Adds library file. Library file must be a .jar archieve

Parameters:

file - link to jar archieve

Throws:

IOException - if something goes wrong

addLibraries

public void addLibraries(Iterable<File> files)
                  throws IOException

Adds list of files as libraries. Files must be jar archieves

Parameters:

files - list of jar archives

Throws:

IOException - if something goes wrong

getCompiledClasses

public Map<String,BinaryClass> getCompiledClasses()

Returns list of classes that were compiled by compiler related to this ClassFileManager

Returns:

list of classes

list

public Iterable<JavaFileObject> list(JavaFileManager.Location location,
                                     String packageName,
                                     Set<JavaFileObject.Kind> kinds,
                                     boolean recurse)
                              throws IOException

This method overrides class resolving procedure for compiler. It uses classloaders to resolve classes that compiler may need during compilation. Compiler by itself can't detect them. So we have to use this hack here. Hack is used only if compiler requests for classes in classpath.

Specified by:

list in interface JavaFileManager

Overrides:

list in class ForwardingJavaFileManager<JavaFileManager>

Parameters:

location - Location to search classes

packageName - package to scan for classes

kinds - FileTypes to search

recurse - not used

Returns:

list of requered files

Throws:

IOException - if something foes wrong

inferBinaryName

public String inferBinaryName(JavaFileManager.Location location,
                              JavaFileObject file)

Specified by:

inferBinaryName in interface JavaFileManager

Overrides:

inferBinaryName in class ForwardingJavaFileManager<JavaFileManager>