jdk8-mips64-public/langtools: test/tools/javac/scope/StarImportTest.java@96d4226bdd60 (annotated)

test/tools/javac/scope/StarImportTest.java@96d4226bdd60 (annotated)

test/tools/javac/scope/StarImportTest.java

Mon, 07 Feb 2011 18:10:13 +0000

author: mcimadamore
date: Mon, 07 Feb 2011 18:10:13 +0000
changeset 858: 96d4226bdd60
parent 767: 7e3e9f6d013f
child 962: 0ff2bbd38f10
permissions: -rw-r--r--

7007615: java_util/generics/phase2/NameClashTest02 fails since jdk7/pit/b123.
Summary: override clash algorithm is not implemented correctly
Reviewed-by: jjg

 /*
  * Copyright (c) 2010, 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
  * @summary Basher for star-import scopes
  */
 import java.lang.reflect.*;
 import java.util.*;
 import java.util.List;
 import com.sun.tools.javac.util.*;
 import com.sun.tools.javac.code.*;
 import com.sun.tools.javac.code.Scope.*;
 import com.sun.tools.javac.code.Symbol.*;
 import com.sun.tools.javac.file.JavacFileManager;
 import static com.sun.tools.javac.code.Kinds.*;
 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 (Scope.Entry se = s.elems; se != null; se = se.sibling) {
             for (Scope.Entry e = se; e.sym != null; e = e.next()) {
                 System.err.print(sep + e.sym.name + ":" + e.sym);
                 sep = ",";
             }
             System.err.print(")");
             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
             names = Names.instance(context);       // Name.Table impls tied to an instance of Names
             symtab = Symtab.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 = new Scope(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.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 therof, 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);
             // if StarImportScope exists, use it, otherwise, for testing legacy code,
             // fall back on ImportScope
             Method importAll;
             try {
                 Class<?> c = Class.forName("com.sun.tools.javac.code.Scope$StarImportScope");
                 Constructor ctor = c.getDeclaredConstructor(new Class[] { Symbol.class });
                 importAll = c.getDeclaredMethod("importAll", new Class[] { Scope.class });
                 starImportScope = (Scope) ctor.newInstance(new Object[] { pkg });
             } catch (ClassNotFoundException e) {
                 starImportScope = new ImportScope(pkg);
                 importAll = null;
             }
             starImportModel = new Model();
             for (Symbol imp: imports) {
                 Scope members = imp.members();
                 if (importAll != null) {
 //                    log("importAll", members);
                     importAll.invoke(starImportScope, members);
                 } else {
                     Scope fromScope = members;
                     Scope toScope = starImportScope;
                     // The following lines are taken from MemberEnter.importAll,
                     // before the use of StarImportScope.importAll.
                     for (Scope.Entry e = fromScope.elems; e != null; e = e.sibling) {
                         if (e.sym.kind == TYP && !toScope.includes(e.sym))
                             toScope.enter(e.sym, fromScope);
                     }
                 }
                 for (Scope.Entry e = members.elems; e != null; e = e.sibling) {
                     starImportModel.enter(e.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 (Scope.Entry se = p.members_field.elems; se != null; se = se.sibling) {
                     if (se.sym.name.toString().contains("$"))
                         nestedClasses.add((ClassSymbol) se.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());
                 Scope.Entry outerEntry = sym.owner.members().lookup(outerName);
                 ClassSymbol outer = (ClassSymbol) outerEntry.sym;
 //                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 = new Scope(sym);
             if (owner != symtab.unnamedPackage)
                 owner.members().enter(sym);
             return sym;
         }
         Context context;
         Symtab symtab;
         Names names;
         int nextNameSerial;
         List<PackageSymbol> packages = new ArrayList<PackageSymbol>();
         int nextPackageSerial;
         List<ClassSymbol> classes = new ArrayList<ClassSymbol>();
         List<Symbol> imports = new ArrayList<Symbol>();
         int nextClassSerial;
         Scope 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 (Scope.Entry se = scope.elems; se != null; se = se.sibling) {
                 Symbol sym = se.sym;
                 if (sym.owner != se.scope.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();
                 Scope.Entry se = scope.lookup(name);
                 assert (se != null);
                 if (se.sym == null) {
                     error("check: no entries found for " + name + " in scope");
                     continue;
                 }
             nextSym:
                 for (Symbol sym: me.getValue()) {
                     for (Scope.Entry e = se; e.sym != null; e = e.next()) {
                         if (sym == e.sym)
                             continue nextSym;
                     }
                     error("check: symbol " + sym + " not found in scope");
                 }
             }
         }
     }
 }

Mercurial > jdk8-mips64-public > langtools / annotate

test/tools/javac/scope/StarImportTest.java@96d4226bdd60 (annotated)

test/tools/javac/scope/StarImportTest.java