/*

 * 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 7101822

 * @summary static import fails to resolve interfaces on nested enums via import statements

 */

import com.sun.source.util.JavacTask;

import java.net.URI;

import java.util.Arrays;

import javax.tools.Diagnostic;

import javax.tools.JavaCompiler;

import javax.tools.JavaFileObject;

import javax.tools.SimpleJavaFileObject;

import javax.tools.StandardJavaFileManager;

import javax.tools.ToolProvider;

public class TestLazyImportScope {

    static int checkCount = 0;

    enum ImportOrder {

        NORMAL("import a.C.D;\n" +

               "#I"),

        REVERSE("#I\n" +

               "import a.C.D;");

        String importLayout;

        ImportOrder(String importLayout) {

            this.importLayout = importLayout;

        }

        String getImportString(ImportKind ik) {

            return importLayout.replaceAll("#I", ik.importStr);

        }

    }

    enum ImportKind {

        NAMED("import a.A.B.E;"),

        ON_DEMAND("import a.A.B.*;"),

        STATIC_NAMED_TYPE("import static a.A.B.E;"),

        STATIC_NAMED_MEMBER("import static a.A.B.bm;"),

        STATIC_ON_DEMAND("import static a.A.B.*;");

        String importStr;

        private ImportKind(String importStr) {

            this.importStr = importStr;

        }

    }

    enum TypeRefKind {

        NONE(""),

        E("E e = null;"),

        F("F f = null;"),

        BOTH("E e = null; F f = null;");

        String typeRefStr;

        private TypeRefKind(String typeRefStr) {

            this.typeRefStr = typeRefStr;

        }

        boolean isImported(ImportKind ik) {

            switch (ik) {

                case NAMED:

                case STATIC_NAMED_TYPE: return this == NONE || this == E;

                case ON_DEMAND:

                case STATIC_ON_DEMAND: return true;

                default: return this == NONE;

            }

        }

    }

    enum MemberRefKind {

        NONE(""),

        FIELD("Object o = bf;"),

        METHOD("bm();"),

        BOTH("Object o = bf; bm();");

        String memberRefStr;

        private MemberRefKind(String memberRefStr) {

            this.memberRefStr = memberRefStr;

        }

        boolean isImported(ImportKind ik) {

            switch (ik) {

                case STATIC_NAMED_MEMBER: return this == NONE || this == METHOD;

                case STATIC_ON_DEMAND: return true;

                default: return this == NONE;

            }

        }

    }

    public static void main(String... args) throws Exception {

        //create default shared JavaCompiler - reused across multiple compilations

        JavaCompiler comp = ToolProvider.getSystemJavaCompiler();

        StandardJavaFileManager fm = comp.getStandardFileManager(null, null, null);

        for (ImportOrder ord : ImportOrder.values()) {

            for (ImportKind ik : ImportKind.values()) {

                for (TypeRefKind tk : TypeRefKind.values()) {

                    for (MemberRefKind mk : MemberRefKind.values()) {

                        new TestLazyImportScope(ord, ik, tk, mk).run(comp, fm);

                    }

                }

            }

        }

        System.out.println("Total check executed: " + checkCount);

    }

    ImportOrder ord;

    ImportKind ik;

    TypeRefKind tk;

    MemberRefKind mk;

    JavaSource source;

    DiagnosticChecker diagChecker;

    TestLazyImportScope(ImportOrder ord, ImportKind ik, TypeRefKind tk, MemberRefKind mk) {

        this.ord = ord;

        this.ik = ik;

        this.tk = tk;

        this.mk = mk;

        this.source = new JavaSource();

        this.diagChecker = new DiagnosticChecker();

    }

    class JavaSource extends SimpleJavaFileObject {

        String bodyTemplate = "package a;\n" +

                              "#I\n" +

                              "class A {\n" +

                              "   static class B extends D {\n" +

                              "      static class E { }\n" +

                              "      static class F { }\n" +

                              "      static Object bf;\n" +

                              "      static void bm() { }\n" +

                              "   }\n" +

                              "}\n" +

                              "class C {\n" +

                              "   static class D { }\n" +

                              "}\n" +

                              "class Test {\n" +

                              "   void test() {\n" +

                              "      #T\n" +

                              "      #M\n" +

                              "   }\n" +

                              "}";

        String source;

        public JavaSource() {

            super(URI.create("myfo:/Test.java"), JavaFileObject.Kind.SOURCE);

            source = bodyTemplate.replaceAll("#I", ord.getImportString(ik))

                    .replaceAll("#T", tk.typeRefStr)

                    .replaceAll("#M", mk.memberRefStr);

        }

        @Override

        public CharSequence getCharContent(boolean ignoreEncodingErrors) {

            return source;

        }

    }

    void run(JavaCompiler tool, StandardJavaFileManager fm) throws Exception {

        JavacTask ct = (JavacTask)tool.getTask(null, fm, diagChecker,

                null, null, Arrays.asList(source));

        try {

            ct.analyze();

        } catch (Throwable ex) {

            throw new AssertionError("Error thrown when compiling the following code:\n" + source.getCharContent(true));

        }

        check();

    }

    void check() {

        checkCount++;

        boolean errorExpected = !tk.isImported(ik) || !mk.isImported(ik);

        if (errorExpected != diagChecker.errorFound) {

            throw new Error("invalid diagnostics for source:\n" +

                source.getCharContent(true) +

                "\nFound error: " + diagChecker.errorFound +

                "\nExpected error: " + errorExpected);

        }

    }

    static class DiagnosticChecker implements javax.tools.DiagnosticListener<JavaFileObject> {

        boolean errorFound;

        public void report(Diagnostic<? extends JavaFileObject> diagnostic) {

            if (diagnostic.getKind() == Diagnostic.Kind.ERROR) {

                errorFound = true;

            }

        }

    }

}