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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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* 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).
*
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* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
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package com.sun.tools.sjavac.comp;
import java.util.Collection;
import java.util.Collections;
import java.util.HashMap;
import java.util.Map;
import java.util.Set;
import java.util.stream.Collectors;
import javax.lang.model.element.Element;
import javax.tools.JavaFileManager.Location;
import javax.tools.JavaFileObject;
import javax.tools.StandardLocation;
import com.sun.tools.javac.code.Symbol.ClassSymbol;
import com.sun.tools.javac.code.Symbol.TypeSymbol;
import com.sun.tools.javac.tree.JCTree.JCCompilationUnit;
import com.sun.tools.javac.util.Context;
import com.sun.tools.javac.util.Log;
import com.sun.tools.sjavac.Util;
import com.sun.tools.sjavac.pubapi.PubApi;
/** 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;
// CompilationUnit -> Fully qualified type -> set of dependencies
protected Map>> deps = new HashMap<>();
// CompilationUnit -> Fully qualified type -> set of dependencies
protected Map>> cpDeps = new HashMap<>();
// Map from a class 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 = new HashMap<>();
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);
}
/**
* Convert the map from class names to their pubapi to a map
* from package names to their pubapi.
*/
public Map getPubapis(Collection explicitJFOs, boolean explicits) {
// Maps ":java.lang" to a package level pub api (with only types on top level)
Map result = new HashMap<>();
for (ClassSymbol cs : publicApiPerClass.keySet()) {
boolean amongExplicits = explicitJFOs.contains(cs.sourcefile);
if (explicits != amongExplicits)
continue;
String pkg = ":" + cs.packge().fullname;
PubApi currentPubApi = result.getOrDefault(pkg, new PubApi());
result.put(pkg, PubApi.mergeTypes(currentPubApi, publicApiPerClass.get(cs)));
}
return result;
}
/**
* Visit the api of a class and construct a pubapi and
* store it into the pubapi_perclass map.
*/
@SuppressWarnings("deprecation")
public void visitPubapi(Element e) {
// Skip anonymous classes for now
if (e == null)
return;
PubapiVisitor v = new PubapiVisitor();
v.visit(e);
publicApiPerClass.put((ClassSymbol) e, v.getCollectedPubApi());
}
public void collect(Location loc, JCCompilationUnit cu, String from, TypeSymbol toSym) {
Map>> depsMap;
// TODO: Just because it's not CLASS_PATH doesn't mean it's to-be-compiled path
depsMap = loc == StandardLocation.CLASS_PATH ? cpDeps : deps;
if (!depsMap.containsKey(cu))
depsMap.put(cu, new HashMap<>());
Map> map = depsMap.get(cu);
map.merge(from, Collections.singleton(toSym), Util::union);
}
// Package -> Type [from] -> Set of Type [to]
public Map>> getDependencies(Collection explicits) {
return getTypeDependenciesHelper(explicits, deps);
}
public Map>> getCpDependencies(Collection explicits) {
return getTypeDependenciesHelper(explicits, cpDeps);
}
public Map>> getTypeDependenciesHelper(Collection explicits,
Map>> depsMap) {
Map>> result = new HashMap<>();
for (JCCompilationUnit cu : depsMap.keySet()) {
if (!explicits.contains(cu.sourcefile))
continue;
// Dependencies to add to package entry
Map> src = depsMap.getOrDefault(cu, Collections.emptyMap());
// Sjavac does currently not handle default packages.
if (cu.getPackage() == null)
continue;
String key = ":" + cu.getPackage().packge.fullname.toString();
// Find (or create) destination
Map> dst;
if (result.containsKey(key))
dst = result.get(key);
else
result.put(key, dst = new HashMap<>());
for (String fqFrom : src.keySet()) {
dst.put(fqFrom, src.get(fqFrom)
.stream()
.map(ts -> ts.type.tsym.flatName().toString())
.collect(Collectors.toSet()));
}
}
return result;
}
}