1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/src/share/classes/com/sun/tools/sjavac/comp/Dependencies.java Mon Feb 04 18:08:53 2013 -0500
1.3 @@ -0,0 +1,188 @@
1.4 +/*
1.5 + * Copyright (c) 1999, 2011, Oracle and/or its affiliates. All rights reserved.
1.6 + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
1.7 + *
1.8 + * This code is free software; you can redistribute it and/or modify it
1.9 + * under the terms of the GNU General Public License version 2 only, as
1.10 + * published by the Free Software Foundation. Oracle designates this
1.11 + * particular file as subject to the "Classpath" exception as provided
1.12 + * by Oracle in the LICENSE file that accompanied this code.
1.13 + *
1.14 + * This code is distributed in the hope that it will be useful, but WITHOUT
1.15 + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
1.16 + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
1.17 + * version 2 for more details (a copy is included in the LICENSE file that
1.18 + * accompanied this code).
1.19 + *
1.20 + * You should have received a copy of the GNU General Public License version
1.21 + * 2 along with this work; if not, write to the Free Software Foundation,
1.22 + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
1.23 + *
1.24 + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
1.25 + * or visit www.oracle.com if you need additional information or have any
1.26 + * questions.
1.27 + */
1.28 +
1.29 +package com.sun.tools.sjavac.comp;
1.30 +
1.31 +import javax.lang.model.element.Element;
1.32 +import java.util.Arrays;
1.33 +import java.util.Comparator;
1.34 +import java.util.HashMap;
1.35 +import java.util.HashSet;
1.36 +import java.util.Map;
1.37 +import java.util.Set;
1.38 +
1.39 +import com.sun.tools.javac.code.Symbol.ClassSymbol;
1.40 +import com.sun.tools.javac.util.Context;
1.41 +import com.sun.tools.javac.util.Log;
1.42 +import com.sun.tools.javac.util.Name;
1.43 +
1.44 +/** Utility class containing dependency information between packages
1.45 + * and the pubapi for a package.
1.46 + *
1.47 + * <p><b>This is NOT part of any supported API.
1.48 + * If you write code that depends on this, you do so at your own
1.49 + * risk. This code and its internal interfaces are subject to change
1.50 + * or deletion without notice.</b></p>
1.51 + */
1.52 +public class Dependencies {
1.53 + protected static final Context.Key<Dependencies> dependenciesKey =
1.54 + new Context.Key<Dependencies>();
1.55 +
1.56 + // The log to be used for error reporting.
1.57 + protected Log log;
1.58 + // Map from package name to packages that the package depends upon.
1.59 + protected Map<Name,Set<Name>> deps;
1.60 + // This is the set of all packages that are supplied
1.61 + // through the java files at the command line.
1.62 + protected Set<Name> explicitPackages;
1.63 +
1.64 + // Map from a package name to its public api.
1.65 + // Will the Name encode the module in the future?
1.66 + // If not, this will have to change to map from Module+Name to public api.
1.67 + protected Map<Name,StringBuffer> publicApiPerClass;
1.68 +
1.69 + public static Dependencies instance(Context context) {
1.70 + Dependencies instance = context.get(dependenciesKey);
1.71 + if (instance == null)
1.72 + instance = new Dependencies(context);
1.73 + return instance;
1.74 + }
1.75 +
1.76 + private Dependencies(Context context) {
1.77 + context.put(dependenciesKey, this);
1.78 + log = Log.instance(context);
1.79 + }
1.80 +
1.81 + public void reset()
1.82 + {
1.83 + deps = new HashMap<Name, Set<Name>>();
1.84 + explicitPackages = new HashSet<Name>();
1.85 + publicApiPerClass = new HashMap<Name,StringBuffer>();
1.86 + }
1.87 +
1.88 + /**
1.89 + * Fetch the set of dependencies that are relevant to the compile
1.90 + * that has just been performed. I.e. we are only interested in
1.91 + * dependencies for classes that were explicitly compiled.
1.92 + * @return
1.93 + */
1.94 + public Map<String,Set<String>> getDependencies() {
1.95 + Map<String,Set<String>> new_deps = new HashMap<String,Set<String>>();
1.96 + if (explicitPackages == null) return new_deps;
1.97 + for (Name pkg : explicitPackages) {
1.98 + Set<Name> set = deps.get(pkg);
1.99 + if (set != null) {
1.100 + Set<String> new_set = new_deps.get(pkg.toString());
1.101 + if (new_set == null) {
1.102 + new_set = new HashSet<String>();
1.103 + // Modules beware....
1.104 + new_deps.put(":"+pkg.toString(), new_set);
1.105 + }
1.106 + for (Name d : set) {
1.107 + new_set.add(":"+d.toString());
1.108 + }
1.109 + }
1.110 + }
1.111 + return new_deps;
1.112 + }
1.113 +
1.114 + class CompareNames implements Comparator<Name> {
1.115 + public int compare(Name a, Name b) {
1.116 + return a.toString().compareTo(b.toString());
1.117 + }
1.118 +
1.119 + public boolean equals(Object obj) {
1.120 + return super.equals(obj);
1.121 + }
1.122 + }
1.123 +
1.124 + /**
1.125 + * Convert the map from class names to their pubapi to a map
1.126 + * from package names to their pubapi (which is the sorted concatenation
1.127 + * of all the class pubapis)
1.128 + */
1.129 + public Map<String,String> getPubapis() {
1.130 + Map<String,String> publicApiPerPackage = new HashMap<String,String>();
1.131 + if (publicApiPerClass == null) return publicApiPerPackage;
1.132 + Name[] keys = publicApiPerClass.keySet().toArray(new Name[0]);
1.133 + Arrays.sort(keys, new CompareNames());
1.134 + StringBuffer newPublicApi = new StringBuffer();
1.135 + int i=0;
1.136 + String prevPkg = "";
1.137 + for (Name k : keys) {
1.138 + String cn = k.toString();
1.139 + String pn = "";
1.140 + int dp = cn.lastIndexOf('.');
1.141 + if (dp != -1) {
1.142 + pn = cn.substring(0,dp);
1.143 + }
1.144 + if (!pn.equals(prevPkg)) {
1.145 + if (!prevPkg.equals("")) {
1.146 + // Add default module name ":"
1.147 + publicApiPerPackage.put(":"+prevPkg, newPublicApi.toString());
1.148 + }
1.149 + newPublicApi = new StringBuffer();
1.150 + prevPkg = pn;
1.151 + }
1.152 + newPublicApi.append(publicApiPerClass.get(k));
1.153 + i++;
1.154 + }
1.155 + if (!prevPkg.equals(""))
1.156 + publicApiPerPackage.put(":"+prevPkg, newPublicApi.toString());
1.157 + return publicApiPerPackage;
1.158 + }
1.159 +
1.160 + /**
1.161 + * Visit the api of a class and construct a pubapi string and
1.162 + * store it into the pubapi_perclass map.
1.163 + */
1.164 + public void visitPubapi(Element e) {
1.165 + Name n = ((ClassSymbol)e).fullname;
1.166 + Name p = ((ClassSymbol)e).packge().fullname;
1.167 + StringBuffer sb = publicApiPerClass.get(n);
1.168 + assert(sb == null);
1.169 + sb = new StringBuffer();
1.170 + PubapiVisitor v = new PubapiVisitor(sb);
1.171 + v.visit(e);
1.172 + if (sb.length()>0) {
1.173 + publicApiPerClass.put(n, sb);
1.174 + }
1.175 + explicitPackages.add(p);
1.176 + }
1.177 +
1.178 + /**
1.179 + * Collect a dependency. curr_pkg is marked as depending on dep_pkg.
1.180 + */
1.181 + public void collect(Name currPkg, Name depPkg) {
1.182 + if (!currPkg.equals(depPkg)) {
1.183 + Set<Name> theset = deps.get(currPkg);
1.184 + if (theset==null) {
1.185 + theset = new HashSet<Name>();
1.186 + deps.put(currPkg, theset);
1.187 + }
1.188 + theset.add(depPkg);
1.189 + }
1.190 + }
1.191 +}
