jdk8-mips64-public/langtools: comparison test/tools/javac/scope/7017664/CompoundScopeTest.java

--1:000000000000
+:959103a6100f
+/*
+* 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 = new ListBuffer<>();
+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 = new ListBuffer<>();
+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 / file comparison

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

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