jdk8-mips64-public/langtools: test/tools/javac/scope/7017664/CompoundScopeTest.java@137994c189e5 (annotated)

test/tools/javac/scope/7017664/CompoundScopeTest.java@137994c189e5 (annotated)

test/tools/javac/scope/7017664/CompoundScopeTest.java

Fri, 12 Apr 2013 12:05:04 +0200

author: jfranck
date: Fri, 12 Apr 2013 12:05:04 +0200
changeset 1689: 137994c189e5
parent 982: 671bb63f3ed5
child 2047: 5f915a0c9615
permissions: -rw-r--r--

7015104: use new subtype of TypeSymbol for type parameters
Reviewed-by: jjg, mcimadamore

 /*
  * Copyright (c) 2011, 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.
  *
  * 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 7017664 7036906
  * @summary Basher for CompoundScopes
  */
 import java.util.Random;
 import java.util.Map;
 import java.util.HashMap;
 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;
 public class CompoundScopeTest {
     public static void main(String... args) throws Exception {
         new CompoundScopeTest().run(args);
     }
     static final int MAX_SYMBOLS_COUNT = 20;
     static final int PASSES = 10;
     void run(String... args) throws Exception {
         int count = PASSES;
         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");
     }
     /**
      * Write a message to stderr.
      */
     void log(String msg) {
         System.err.println(msg);
     }
     /**
      * Write an error message to stderr.
      */
     void error(String msg) {
         System.err.println("Error: " + msg);
         errors++;
     }
     Random rgen;
     long seed = 0;
     int errors;
     /** Class to encapsulate a test run. */
     class Test {
         List<Symbol> elems = List.nil();
         Map<Name, List<Symbol>> shadowedMap = new HashMap<Name, List<Symbol>>();
         /** Run the test. */
         void run() throws Exception {
             log ("starting test");
             setup();
             Scope[] scopes = { createScope(rgen.nextInt(MAX_SYMBOLS_COUNT)),
                                createScope(rgen.nextInt(MAX_SYMBOLS_COUNT)),
                                createScope(rgen.nextInt(MAX_SYMBOLS_COUNT)) };
             boolean[][] scopeNesting = { {false, true, false, true},
                                    {false, true, true, true},
                                    {false, false, true, true} };
             /**
              * We want to generate (and check) the following compound scopes:
              * C1 = C(S1, S2, S3)
              * C2 = C((S1, S2), S3)
              * C3 = C(S1, (S2, S3))
              * C3 = C(C(S1, S2, S3))
              */
             for (int i = 0 ; i < 4 ; i ++) {
                 CompoundScope root = new CompoundScope(symtab.noSymbol);
                 CompoundScope sub = new CompoundScope(symtab.noSymbol);
                 boolean subAdded = false;
                 for (int sc = 0 ; sc < 3 ; sc ++) {
                     if (scopeNesting[sc][i]) {
                         sub.addSubScope(scopes[sc]);
                         if (!subAdded) {
                             root.addSubScope(sub);
                             subAdded = true;
                         }
                     } else {
                         root.addSubScope(scopes[sc]);
                     }
                 }
                 log("testing scope: " + root);
                 checkElems(root, null);
                 checkElems(root, new OddFilter());
                 checkShadowed(root, null);
                 checkShadowed(root, new OddFilter());
             }
         }
         class OddFilter implements Filter<Symbol> {
             public boolean accepts(Symbol s) {
                 Name numPart = s.name.subName(1, s.name.length());
                 return Integer.parseInt(numPart.toString()) % 2 != 0;
             }
         }
         /**
          * Create a scope containing a given number of synthetic symbols
          */
         Scope createScope(int nelems) {
             Scope s = new Scope(symtab.noSymbol);
             for (int i = 0 ; i < nelems ; i++) {
                 Symbol sym = new TypeVariableSymbol(0, names.fromString("s" + i), null, null);
                 s.enter(sym);
                 elems = elems.prepend(sym);
                 List<Symbol> shadowed = shadowedMap.get(sym.name);
                 if (shadowed == null) {
                     shadowed = List.nil();
                 }
                 shadowedMap.put(sym.name, shadowed.prepend(sym));
             }
             return s;
         }
         /**
          * Setup compiler context
          */
         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);
         }
         /**
          * Check that CompoundScope.getElements() correctly visits all symbols
          * in all subscopes (in the correct order)
          */
         void checkElems(CompoundScope cs, Filter<Symbol> sf) {
             int count = 0;
             ListBuffer<Symbol> found = ListBuffer.lb();
             List<Symbol> allSymbols = sf == null ?
                     elems :
                     filter(elems, sf);
             int expectedCount = allSymbols.length();
             for (Symbol s : sf == null ? cs.getElements() : cs.getElements(sf)) {
                 checkSameSymbols(s, allSymbols.head);
                 allSymbols = allSymbols.tail;
                 found.append(s);
                 count++;
             }
             if (count != expectedCount) {
                 error("CompoundScope.getElements() did not returned enough symbols");
             }
         }
         /**
          * Check that CompoundScope.getElements() correctly visits all symbols
          * with a given name in all subscopes (in the correct order)
          */
         void checkShadowed(CompoundScope cs, Filter<Symbol> sf) {
             for (Map.Entry<Name, List<Symbol>> shadowedEntry : shadowedMap.entrySet()) {
                 int count = 0;
                 List<Symbol> shadowed = sf == null ?
                     shadowedEntry.getValue() :
                     filter(shadowedEntry.getValue(), sf);
                 int expectedCount = shadowed.length();
                 Name name = shadowedEntry.getKey();
                 for (Symbol s : sf == null ? cs.getElementsByName(name) : cs.getElementsByName(name, sf)) {
                     checkSameSymbols(s, shadowed.head);
                     shadowed = shadowed.tail;
                     count++;
                 }
                 if (count != expectedCount) {
                     error("CompoundScope.lookup() did not returned enough symbols for name " + name);
                 }
             }
         }
         List<Symbol> filter(List<Symbol> elems, Filter<Symbol> sf) {
             ListBuffer<Symbol> res = ListBuffer.lb();
             for (Symbol s : elems) {
                 if (sf.accepts(s)) {
                     res.append(s);
                 }
             }
             return res.toList();
         }
         void checkSameSymbols(Symbol found, Symbol req) {
             if (found != req) {
                 error("Symbol mismatch - found    : " + found + ":" + found.hashCode() + "\n" +
                       "                  required : " + req + ":" + req.hashCode());
             }
         }
         Context context;
         Symtab symtab;
         Names names;
     }
 }

Mercurial > jdk8-mips64-public > langtools / annotate

test/tools/javac/scope/7017664/CompoundScopeTest.java@137994c189e5 (annotated)

test/tools/javac/scope/7017664/CompoundScopeTest.java