langtools/test/tools/javac/6402516/CheckLocalElements.java
author darcy
Wed, 02 Jun 2010 19:08:47 -0700
changeset 5841 7a8448425bb7
parent 5520 86e4b9a9da40
child 7681 1f0819a3341f
permissions -rw-r--r--
6933147: Provided new utility visitors supporting SourceVersion.RELEASE_7 Reviewed-by: jjg
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/*
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 * Copyright (c) 2006, Oracle and/or its affiliates. All rights reserved.
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 *
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 * This code is free software; you can redistribute it and/or modify it
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 * under the terms of the GNU General Public License version 2 only, as
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 * published by the Free Software Foundation.
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 *
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 * This code is distributed in the hope that it will be useful, but WITHOUT
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 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
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 * version 2 for more details (a copy is included in the LICENSE file that
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 * accompanied this code).
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 *
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 * You should have received a copy of the GNU General Public License version
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 * 2 along with this work; if not, write to the Free Software Foundation,
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 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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 *
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 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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 * or visit www.oracle.com if you need additional information or have any
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 * questions.
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 */
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/*
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 * @test
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 * @bug 6402516
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 * @summary need Trees.getScope(TreePath)
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 * @build Checker CheckLocalElements
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 * @run main CheckLocalElements
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 */
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import java.util.*;
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import com.sun.source.tree.*;
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import javax.lang.model.element.*;
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import javax.lang.model.util.*;
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/*
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 * Check the local elements of a scope against the contents of string literals.
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 */
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public class CheckLocalElements extends Checker {
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    public static void main(String... args) throws Exception {
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        Checker chk = new CheckLocalElements();
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        chk.check("TestLocalElements.java");
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    }
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    @Override
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    protected boolean checkLocal(Scope s, String ref) {
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        Iterator<? extends Element> elemIter = s.getLocalElements().iterator();
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        ref = ref.trim();
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        String[] refs = ref.length() == 0 ? new String[0] : ref.split("[ ]*,[ ]*", -1);
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        Iterator<String> refIter = Arrays.asList(refs).iterator();
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        String r = null;
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        nextElem:
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        while (elemIter.hasNext()) {
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            Element e = elemIter.next();
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            try {
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                if (r == null)
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                    r = refIter.next();
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                while (r.endsWith(".*")) {
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                    String encl = getEnclosingName(e);
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                    String rBase = r.substring(0, r.length() - 2);
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                    if (encl.equals(rBase) || encl.startsWith(rBase + "."))
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                        continue nextElem;
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                    r = refIter.next();
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                }
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                if (r.equals("-") && (e.getSimpleName().length() == 0)
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                    || e.getSimpleName().toString().equals(r)) {
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                    r = null;
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                    continue nextElem;
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                }
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                error(s, ref, "mismatch: " + e.getSimpleName() + " " + r);
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                return false;
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            } catch (NoSuchElementException ex) { // from refIter.next()
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                error(s, null, "scope has unexpected entry: " + e.getSimpleName());
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                return false;
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            }
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        }
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        if (refIter.hasNext()) {
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            error(s, ref, "scope is missing entry: " + refIter.next());
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            return false;
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        }
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        return true;
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    }
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    private String getEnclosingName(Element e) {
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        Element encl = e.getEnclosingElement();
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        return encl == null ? "" : encl.accept(qualNameVisitor, null);
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    }
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    private ElementVisitor<String,Void> qualNameVisitor = new SimpleElementVisitor7<String,Void>() {
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        protected String defaultAction(Element e, Void ignore) {
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            return "";
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        }
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        public String visitPackage(PackageElement e, Void ignore) {
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            return e.getQualifiedName().toString();
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        }
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        public String visitType(TypeElement e, Void ignore) {
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            return e.getQualifiedName().toString();
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        }
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    };
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}