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/*******************************************************************************
* Copyright (c) 2000, 2009 IBM Corporation and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.jdt.internal.compiler.env;
/**
* The name environment provides a callback API that the compiler
* can use to look up types, compilation units, and packages in the
* current environment. The name environment is passed to the compiler
* on creation.
*/
public interface INameEnvironment {
/**
* Find a type with the given compound name.
* Answer the binary form of the type if it is known to be consistent.
* Otherwise, answer the compilation unit which defines the type
* or null if the type does not exist.
* Types in the default package are specified as {{typeName}}.
*
* It is unknown whether the package containing the type actually exists.
*
* NOTE: This method can be used to find a member type using its
* internal name A$B, but the source file for A is answered if the binary
* file is inconsistent.
*/
NameEnvironmentAnswer findType(char[][] compoundTypeName);
/**
* Find a type named <typeName> in the package <packageName>.
* Answer the binary form of the type if it is known to be consistent.
* Otherwise, answer the compilation unit which defines the type
* or null if the type does not exist.
* The default package is indicated by char[0][].
*
* It is known that the package containing the type exists.
*
* NOTE: This method can be used to find a member type using its
* internal name A$B, but the source file for A is answered if the binary
* file is inconsistent.
*/
NameEnvironmentAnswer findType(char[] typeName, char[][] packageName);
/**
* Answer whether packageName is the name of a known subpackage inside
* the package parentPackageName. A top level package is found relative to null.
* The default package is always assumed to exist.
*
* For example:
* isPackage({{java}, {awt}}, {event});
* isPackage(null, {java});
*/
boolean isPackage(char[][] parentPackageName, char[] packageName);
/**
* This method cleans the environment uo. It is responsible for releasing the memory
* and freeing resources. Passed that point, the name environment is no longer usable.
*
* A name environment can have a long life cycle, therefore it is the responsibility of
* the code which created it to decide when it is a good time to clean it up.
*/
void cleanup();
}
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