polyglot.types.reflect
Class ClassFileLoader

java.lang.Object
  polyglot.types.reflect.ClassFileLoader

public class ClassFileLoader
extends java.lang.Object

Polyglot has its own class loader just so the classpath can be specified on the command line.

Field Summary

protected java.util.Map	dirContentsCache Directory contents cache.
protected ExtensionInfo	extensionInfo The extension info
protected static java.lang.Object	not_found
protected java.util.Set	packageCache A cache of directories found in zip files.
protected static java.util.Collection	verbose
protected java.util.Map	zipCache Keep a cache of the zips and jars so we don't have to keep opening them from the file system.

Constructor Summary

ClassFileLoader(ExtensionInfo ext)

Method Summary

ClassFile	loadClass(java.io.File dir, java.lang.String name) Try to find the class name in the directory or jar or zip file dir.
boolean	packageExists(java.io.File dir, java.lang.String name) Return true if the package name exists under the directory or file dir.

Methods inherited from class java.lang.Object

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

Field Detail

extensionInfo

protected ExtensionInfo extensionInfo

The extension info

zipCache

protected java.util.Map zipCache

Keep a cache of the zips and jars so we don't have to keep opening them from the file system.

packageCache

protected java.util.Set packageCache

A cache of directories found in zip files.

dirContentsCache

protected java.util.Map dirContentsCache

Directory contents cache. Cache the first level of the directory so that we get less FileNotFoundExceptions

not_found

protected static final java.lang.Object not_found

verbose

protected static java.util.Collection verbose

Constructor Detail

ClassFileLoader

public ClassFileLoader(ExtensionInfo ext)

Method Detail

packageExists

public boolean packageExists(java.io.File dir,
                             java.lang.String name)

Return true if the package name exists under the directory or file dir.

loadClass

public ClassFile loadClass(java.io.File dir,
                           java.lang.String name)

Try to find the class name in the directory or jar or zip file dir. If the class does not exist in the specified file/directory, then null is returned.