| /* |
| * Copyright (c) 2010, 2015, 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. |
| * |
| * 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. |
| */ |
| |
| /* |
| * @test |
| * @bug 7004029 8131915 |
| * @summary Basher for star-import scopes |
| * @modules jdk.compiler/com.sun.tools.javac.code |
| * jdk.compiler/com.sun.tools.javac.file |
| * jdk.compiler/com.sun.tools.javac.tree |
| * jdk.compiler/com.sun.tools.javac.util |
| */ |
| |
| import java.util.*; |
| import java.util.List; |
| |
| import com.sun.tools.javac.code.*; |
| import com.sun.tools.javac.code.Scope.ImportFilter; |
| import com.sun.tools.javac.code.Scope.StarImportScope; |
| import com.sun.tools.javac.code.Scope.WriteableScope; |
| import com.sun.tools.javac.code.Symbol.*; |
| import com.sun.tools.javac.file.JavacFileManager; |
| import com.sun.tools.javac.tree.TreeMaker; |
| import com.sun.tools.javac.util.*; |
| |
| import static com.sun.tools.javac.code.Kinds.Kind.*; |
| |
| public class StarImportTest { |
| public static void main(String... args) throws Exception { |
| new StarImportTest().run(args); |
| } |
| |
| void run(String... args) throws Exception { |
| int count = 1; |
| |
| for (int i = 0; i < args.length; i++) { |
| String arg = args[i]; |
| if (arg.equals("-seed") && (i + 1 < args.length)) |
| seed = Long.parseLong(args[++i]); |
| else if(arg.equals("-tests") && (i + 1 < args.length)) |
| count = Integer.parseInt(args[++i]); |
| else |
| throw new Exception("unknown arg: " + arg); |
| } |
| |
| rgen = new Random(seed); |
| |
| for (int i = 0; i < count; i++) { |
| Test t = new Test(); |
| t.run(); |
| } |
| |
| if (errors > 0) |
| throw new Exception(errors + " errors found"); |
| } |
| |
| /** |
| * Select a random element from an array of choices. |
| */ |
| <T> T random(T... choices) { |
| return choices[rgen.nextInt(choices.length)]; |
| } |
| |
| /** |
| * Write a message to stderr. |
| */ |
| void log(String msg) { |
| System.err.println(msg); |
| } |
| |
| /** |
| * Write a message to stderr, and dump a scope. |
| */ |
| void log(String msg, Scope s) { |
| System.err.print(msg); |
| System.err.print(": "); |
| String sep = "("; |
| for (Symbol sym : s.getSymbols()) { |
| System.err.print(sep + sym.name + ":" + sym); |
| sep = ","; |
| } |
| System.err.println(); |
| } |
| |
| /** |
| * Write an error message to stderr. |
| */ |
| void error(String msg) { |
| System.err.println("Error: " + msg); |
| errors++; |
| } |
| |
| Random rgen; |
| long seed = 0; |
| |
| int errors; |
| |
| enum SetupKind { NAMES, PACKAGE, CLASS }; |
| static final int MAX_SETUP_COUNT = 50; |
| static final int MAX_SETUP_NAME_COUNT = 20; |
| static final int MAX_SETUP_PACKAGE_COUNT = 20; |
| static final int MAX_SETUP_CLASS_COUNT = 20; |
| |
| /** Class to encapsulate a test run. */ |
| class Test { |
| /** Run the test. */ |
| void run() throws Exception { |
| log ("starting test"); |
| setup(); |
| createStarImportScope(); |
| test(); |
| } |
| |
| /** |
| * Setup env by creating pseudo-random collection of names, packages and classes. |
| */ |
| void setup() { |
| log ("setup"); |
| context = new Context(); |
| JavacFileManager.preRegister(context); // required by ClassReader which is required by Symtab |
| make = TreeMaker.instance(context); |
| names = Names.instance(context); // Name.Table impls tied to an instance of Names |
| symtab = Symtab.instance(context); |
| types = Types.instance(context); |
| int setupCount = rgen.nextInt(MAX_SETUP_COUNT); |
| for (int i = 0; i < setupCount; i++) { |
| switch (random(SetupKind.values())) { |
| case NAMES: |
| setupNames(); |
| break; |
| case PACKAGE: |
| setupPackage(); |
| break; |
| case CLASS: |
| setupClass(); |
| break; |
| } |
| } |
| } |
| |
| /** |
| * Set up a random number of names. |
| */ |
| void setupNames() { |
| int count = rgen.nextInt(MAX_SETUP_NAME_COUNT); |
| log("setup: creating " + count + " new names"); |
| for (int i = 0; i < count; i++) { |
| names.fromString("n" + (++nextNameSerial)); |
| } |
| } |
| |
| /** |
| * Set up a package containing a random number of member elements. |
| */ |
| void setupPackage() { |
| Name name = names.fromString("p" + (++nextPackageSerial)); |
| int count = rgen.nextInt(MAX_SETUP_PACKAGE_COUNT); |
| log("setup: creating package " + name + " with " + count + " entries"); |
| PackageSymbol p = new PackageSymbol(name, symtab.rootPackage); |
| p.members_field = WriteableScope.create(p); |
| for (int i = 0; i < count; i++) { |
| String outer = name + "c" + i; |
| String suffix = random(null, "$Entry", "$Entry2"); |
| ClassSymbol c1 = createClass(names.fromString(outer), p); |
| // log("setup: created " + c1); |
| if (suffix != null) { |
| ClassSymbol c2 = createClass(names.fromString(outer + suffix), p); |
| // log("setup: created " + c2); |
| } |
| } |
| // log("package " + p, p.members_field); |
| packages.add(p); |
| imports.add(p); |
| } |
| |
| /** |
| * Set up a class containing a random number of member elements. |
| */ |
| void setupClass() { |
| Name name = names.fromString("c" + (++nextClassSerial)); |
| int count = rgen.nextInt(MAX_SETUP_CLASS_COUNT); |
| log("setup: creating class " + name + " with " + count + " entries"); |
| ClassSymbol c = createClass(name, symtab.unnamedModule.unnamedPackage); |
| // log("setup: created " + c); |
| for (int i = 0; i < count; i++) { |
| ClassSymbol ic = createClass(names.fromString("Entry" + i), c); |
| // log("setup: created " + ic); |
| } |
| classes.add(c); |
| imports.add(c); |
| } |
| |
| /** |
| * Create a star-import scope and a model thereof, from the packages and |
| * classes created by setupPackages and setupClasses. |
| * @throws Exception for fatal errors, such as from reflection |
| */ |
| void createStarImportScope() throws Exception { |
| log ("createStarImportScope"); |
| PackageSymbol pkg = new PackageSymbol(names.fromString("pkg"), symtab.rootPackage); |
| |
| starImportScope = new StarImportScope(pkg); |
| starImportModel = new Model(); |
| |
| for (Symbol imp: imports) { |
| Scope members = imp.members(); |
| // log("importAll", members); |
| starImportScope.importAll(types, members, new ImportFilter() { |
| @Override |
| public boolean accepts(Scope origin, Symbol t) { |
| return t.kind == TYP; |
| } |
| }, make.Import(null, false), (i, cf) -> { throw new IllegalStateException(); }); |
| |
| for (Symbol sym : members.getSymbols()) { |
| starImportModel.enter(sym); |
| } |
| } |
| |
| // log("star-import scope", starImportScope); |
| starImportModel.check(starImportScope); |
| } |
| |
| /** |
| * The core of the test. In a random order, move nested classes from |
| * the package in which they created to the class which should own them. |
| */ |
| void test() { |
| log ("test"); |
| List<ClassSymbol> nestedClasses = new LinkedList<ClassSymbol>(); |
| for (PackageSymbol p: packages) { |
| for (Symbol sym : p.members_field.getSymbols()) { |
| if (sym.name.toString().contains("$")) |
| nestedClasses.add((ClassSymbol) sym); |
| } |
| } |
| |
| for (int i = nestedClasses.size(); i > 0; i--) { |
| // select a random nested class to move from package to class |
| ClassSymbol sym = nestedClasses.remove(rgen.nextInt(i)); |
| log("adjusting class " + sym); |
| |
| // remove from star import model |
| starImportModel.remove(sym); |
| |
| String s = sym.name.toString(); |
| int dollar = s.indexOf("$"); |
| |
| // owner should be a package |
| assert (sym.owner.kind == PCK); |
| |
| // determine new owner |
| Name outerName = names.fromString(s.substring(0, dollar)); |
| // log(sym + " owner: " + sym.owner, sym.owner.members()); |
| ClassSymbol outer = (ClassSymbol)sym.owner.members().findFirst(outerName); |
| // log("outer: " + outerName + " " + outer); |
| |
| // remove from package |
| sym.owner.members().remove(sym); |
| |
| // rename and insert into class |
| sym.name = names.fromString(s.substring(dollar + 1)); |
| outer.members().enter(sym); |
| sym.owner = outer; |
| |
| // verify |
| starImportModel.check(starImportScope); |
| } |
| } |
| |
| ClassSymbol createClass(Name name, Symbol owner) { |
| ClassSymbol sym = new ClassSymbol(0, name, owner); |
| sym.members_field = WriteableScope.create(sym); |
| if (owner != symtab.unnamedModule.unnamedPackage) |
| owner.members().enter(sym); |
| return sym; |
| } |
| |
| Context context; |
| Symtab symtab; |
| TreeMaker make; |
| Names names; |
| Types types; |
| int nextNameSerial; |
| List<PackageSymbol> packages = new ArrayList<PackageSymbol>(); |
| int nextPackageSerial; |
| List<ClassSymbol> classes = new ArrayList<ClassSymbol>(); |
| List<Symbol> imports = new ArrayList<Symbol>(); |
| int nextClassSerial; |
| |
| StarImportScope starImportScope; |
| Model starImportModel; |
| } |
| |
| class Model { |
| private Map<Name, Set<Symbol>> map = new HashMap<Name, Set<Symbol>>(); |
| private Set<Symbol> bogus = new HashSet<Symbol>(); |
| |
| void enter(Symbol sym) { |
| Set<Symbol> syms = map.get(sym.name); |
| if (syms == null) |
| map.put(sym.name, syms = new LinkedHashSet<Symbol>()); |
| syms.add(sym); |
| } |
| |
| void remove(Symbol sym) { |
| Set<Symbol> syms = map.get(sym.name); |
| if (syms == null) |
| error("no entries for " + sym.name + " found in reference model"); |
| else { |
| boolean ok = syms.remove(sym); |
| if (ok) { |
| // log(sym.name + "(" + sym + ") removed from reference model"); |
| } else { |
| error(sym.name + " not found in reference model"); |
| } |
| if (syms.isEmpty()) |
| map.remove(sym.name); |
| } |
| } |
| |
| /** |
| * Check the contents of a scope |
| */ |
| void check(Scope scope) { |
| // First, check all entries in scope are in map |
| int bogusCount = 0; |
| for (Symbol sym : scope.getSymbols()) { |
| if (sym.owner != scope.getOrigin(sym).owner) { |
| if (bogus.contains(sym)) { |
| bogusCount++; |
| } else { |
| log("Warning: " + sym.name + ":" + sym + " appears to be bogus"); |
| bogus.add(sym); |
| } |
| } else { |
| Set<Symbol> syms = map.get(sym.name); |
| if (syms == null) { |
| error("check: no entries found for " + sym.name + ":" + sym + " in reference map"); |
| } else if (!syms.contains(sym)) { |
| error("check: symbol " + sym.name + ":" + sym + " not found in reference map"); |
| } |
| } |
| } |
| if (bogusCount > 0) { |
| log("Warning: " + bogusCount + " other bogus entries previously reported"); |
| } |
| |
| // Second, check all entries in map are in scope |
| for (Map.Entry<Name,Set<Symbol>> me: map.entrySet()) { |
| Name name = me.getKey(); |
| if (scope.findFirst(name) == null) { |
| error("check: no entries found for " + name + " in scope"); |
| continue; |
| } |
| nextSym: |
| for (Symbol sym: me.getValue()) { |
| for (Symbol s : scope.getSymbolsByName(name)) { |
| if (sym == s) |
| continue nextSym; |
| } |
| error("check: symbol " + sym + " not found in scope"); |
| } |
| } |
| } |
| } |
| } |