Package gnu.expr

Class ModuleManager

java.lang.Object

gnu.expr.ModuleManager

public class ModuleManager
extends Object

A database of known modules as represented by ModuleInfo. Currently there is only a single global instance of ModuleManager; in the future each different "application" may have their own.

Field Summary

Fields

Modifier and Type	Field	Description
String	evalClassPrefix
static final String	interactiveClassPrefix
static final long	LAST_MODIFIED_CACHE_TIME
long	lastModifiedCacheTime	Number of milliseconds before we re-check file's modified time.

Constructor Summary

Constructors

Constructor	Description
ModuleManager()

Method Summary

Modifier and Type	Method	Description
void	clear()	Reset the set of known modules.
ModuleInfo	createWithClassName(String className)
ModuleInfo	find(Compilation comp)
static ModuleInfo	findWithClass(Class clas)
ModuleInfo	findWithClassName(String className)
ModuleInfo	findWithSourcePath(gnu.kawa.io.Path sourceAbsPath, String sourcePath)
ModuleInfo	findWithSourcePath(String sourcePath)
ModuleInfo	findWithURL(URL url)
String	getCompilationDirectory()
static ModuleManager	getInstance()	For now assumes a single global ModuleManager.
ModuleInfo	getModule(int index)
String	getNewEvalName()	Used to generate unique class names for other evals.
String	getNewInteractiveName()	Used to generate unique class names for interactive REPLs and loads.
void	loadPackageInfo(String packageName)	Search for and if needed load the ModuleSet for a package.
void	register(String moduleClass, String moduleSource, String moduleUri)	Called by compiler-generated code.
ModuleInfo	searchWithClassName(String className)
void	setCompilationDirectory(String path)

Methods inherited from class java.lang.Object

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

Field Details

interactiveClassPrefix

public static final String interactiveClassPrefix

See Also:

• Constant Field Values

evalClassPrefix

public String evalClassPrefix

LAST_MODIFIED_CACHE_TIME

public static final long LAST_MODIFIED_CACHE_TIME

See Also:

• Constant Field Values

lastModifiedCacheTime

public long lastModifiedCacheTime

Number of milliseconds before we re-check file's modified time.

Constructor Details

ModuleManager

public ModuleManager()

Method Details

setCompilationDirectory

public void setCompilationDirectory(String path)

getCompilationDirectory

public String getCompilationDirectory()

getInstance

public static ModuleManager getInstance()

For now assumes a single global ModuleManager. Later, might have multiple managers.

getNewInteractiveName

public String getNewInteractiveName()

Used to generate unique class names for interactive REPLs and loads. This is incremented from Shell.run. Unique class names are essential for Compilation.usedClass(gnu.bytecode.Type). They're also desirable for debugging.

getNewEvalName

public String getNewEvalName()

Used to generate unique class names for other evals. Equivalent in functionality to getNewInteractiveName, but with a different prefix, for better user-friendliness.

getModule

public ModuleInfo getModule(int index)

find

public ModuleInfo find(Compilation comp)

createWithClassName

public ModuleInfo createWithClassName(String className)

searchWithClassName

public ModuleInfo searchWithClassName(String className)

findWithClass

public static ModuleInfo findWithClass(Class clas)

findWithClassName

public ModuleInfo findWithClassName(String className)

findWithSourcePath

public ModuleInfo findWithSourcePath(gnu.kawa.io.Path sourceAbsPath,
 String sourcePath)

findWithSourcePath

public ModuleInfo findWithSourcePath(String sourcePath)

findWithURL

public ModuleInfo findWithURL(URL url)

register

public void register(String moduleClass,
 String moduleSource,
 String moduleUri)

Called by compiler-generated code. The compiler generates in each package a class that extends ModuleSet, and that contains a ModuleSet.register(ModuleManager) method that calls back to this method. This method then registers the specified module.

loadPackageInfo

public void loadPackageInfo(String packageName)
                     throws ClassNotFoundException,
InstantiationException,
IllegalAccessException

Search for and if needed load the ModuleSet for a package.

Throws:

ClassNotFoundException

InstantiationException

IllegalAccessException

clear

public void clear()

Reset the set of known modules.