/*
* Copyright (c) 2004, 2008, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
package com.sun.tools.apt.mirror;
import com.sun.tools.apt.mirror.declaration.DeclarationMaker;
import com.sun.tools.apt.mirror.type.TypeMaker;
import com.sun.tools.javac.code.*;
import com.sun.tools.javac.code.Symbol.CompletionFailure;
import com.sun.tools.javac.comp.Attr;
import com.sun.tools.javac.comp.Enter;
import com.sun.tools.javac.util.Context;
import com.sun.tools.javac.util.Names;
/**
* The environment for a run of apt.
*/
@SuppressWarnings("deprecation")
public class AptEnv {
public Names names; // javac's name table
public Symtab symtab; // javac's predefined symbols
public Types jctypes; // javac's type utilities
public Enter enter; // javac's enter phase
public Attr attr; // javac's attr phase (to evaluate
// constant initializers)
public TypeMaker typeMaker; // apt's internal type utilities
public DeclarationMaker declMaker; // apt's internal declaration utilities
private static final Context.Key<AptEnv> aptEnvKey =
new Context.Key<AptEnv>();
public static AptEnv instance(Context context) {
AptEnv instance = context.get(aptEnvKey);
if (instance == null) {
instance = new AptEnv(context);
}
return instance;
}
private AptEnv(Context context) {
context.put(aptEnvKey, this);
names = Names.instance(context);
symtab = Symtab.instance(context);
jctypes = Types.instance(context);
enter = Enter.instance(context);
attr = Attr.instance(context);
typeMaker = TypeMaker.instance(context);
declMaker = DeclarationMaker.instance(context);
}
/**
* Does a symbol have a given flag? Forces symbol completion.
*/
public static boolean hasFlag(Symbol sym, long flag) {
return (getFlags(sym) & flag) != 0;
}
/**
* Returns a symbol's flags. Forces completion.
*/
public static long getFlags(Symbol sym) {
complete(sym);
return sym.flags();
}
/**
* Completes a symbol, ignoring completion failures.
*/
private static void complete(Symbol sym) {
while (true) {
try {
sym.complete();
return;
} catch (CompletionFailure e) {
// Should never see two in a row, but loop just to be sure.
}
}
}
}