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Maven repackaging of OpenJDK's jdk.compiler module
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/*
* Copyright (c) 1999, 2013, 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.sjavac.comp;
import javax.lang.model.element.Element;
import java.util.Arrays;
import java.util.Comparator;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Map;
import java.util.Set;
import com.sun.tools.javac.code.Symbol.ClassSymbol;
import com.sun.tools.javac.util.Context;
import com.sun.tools.javac.util.Log;
import com.sun.tools.javac.util.Name;
/** Utility class containing dependency information between packages
* and the pubapi for a package.
*
* This is NOT part of any supported API.
* If you write code that depends on this, you do so at your own
* risk. This code and its internal interfaces are subject to change
* or deletion without notice.
*/
public class Dependencies {
protected static final Context.Key dependenciesKey =
new Context.Key();
// The log to be used for error reporting.
protected Log log;
// Map from package name to packages that the package depends upon.
protected Map> deps;
// This is the set of all packages that are supplied
// through the java files at the command line.
protected Set explicitPackages;
// Map from a package name to its public api.
// Will the Name encode the module in the future?
// If not, this will have to change to map from Module+Name to public api.
protected Map publicApiPerClass;
public static Dependencies instance(Context context) {
Dependencies instance = context.get(dependenciesKey);
if (instance == null)
instance = new Dependencies(context);
return instance;
}
private Dependencies(Context context) {
context.put(dependenciesKey, this);
log = Log.instance(context);
}
public void reset()
{
deps = new HashMap>();
explicitPackages = new HashSet();
publicApiPerClass = new HashMap();
}
/**
* Fetch the set of dependencies that are relevant to the compile
* that has just been performed. I.e. we are only interested in
* dependencies for classes that were explicitly compiled.
* @return
*/
public Map> getDependencies() {
Map> new_deps = new HashMap>();
if (explicitPackages == null) return new_deps;
for (Name pkg : explicitPackages) {
Set set = deps.get(pkg);
if (set != null) {
Set new_set = new_deps.get(pkg.toString());
if (new_set == null) {
new_set = new HashSet();
// Modules beware....
new_deps.put(":"+pkg.toString(), new_set);
}
for (Name d : set) {
new_set.add(":"+d.toString());
}
}
}
return new_deps;
}
static class CompareNames implements Comparator {
public int compare(Name a, Name b) {
return a.toString().compareTo(b.toString());
}
}
/**
* Convert the map from class names to their pubapi to a map
* from package names to their pubapi (which is the sorted concatenation
* of all the class pubapis)
*/
public Map getPubapis() {
Map publicApiPerPackage = new HashMap();
if (publicApiPerClass == null) return publicApiPerPackage;
Name[] keys = publicApiPerClass.keySet().toArray(new Name[0]);
Arrays.sort(keys, new CompareNames());
StringBuffer newPublicApi = new StringBuffer();
int i=0;
String prevPkg = "";
for (Name k : keys) {
String cn = k.toString();
String pn = "";
int dp = cn.lastIndexOf('.');
if (dp != -1) {
pn = cn.substring(0,dp);
}
if (!pn.equals(prevPkg)) {
if (!prevPkg.equals("")) {
// Add default module name ":"
publicApiPerPackage.put(":"+prevPkg, newPublicApi.toString());
}
newPublicApi = new StringBuffer();
prevPkg = pn;
}
newPublicApi.append(publicApiPerClass.get(k));
i++;
}
if (!prevPkg.equals(""))
publicApiPerPackage.put(":"+prevPkg, newPublicApi.toString());
return publicApiPerPackage;
}
/**
* Visit the api of a class and construct a pubapi string and
* store it into the pubapi_perclass map.
*/
public void visitPubapi(Element e) {
Name n = ((ClassSymbol)e).fullname;
Name p = ((ClassSymbol)e).packge().fullname;
StringBuffer sb = publicApiPerClass.get(n);
assert(sb == null);
sb = new StringBuffer();
PubapiVisitor v = new PubapiVisitor(sb);
v.visit(e);
if (sb.length()>0) {
publicApiPerClass.put(n, sb);
}
explicitPackages.add(p);
}
/**
* Collect a dependency. curr_pkg is marked as depending on dep_pkg.
*/
public void collect(Name currPkg, Name depPkg) {
if (!currPkg.equals(depPkg)) {
Set theset = deps.get(currPkg);
if (theset==null) {
theset = new HashSet();
deps.put(currPkg, theset);
}
theset.add(depPkg);
}
}
}