/*

 * 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 7096014

 * @summary Javac tokens should retain state

 */

import com.sun.source.tree.*;

import com.sun.source.util.*;

import com.sun.tools.javac.tree.DocCommentTable;

import com.sun.tools.javac.tree.JCTree;

import java.net.URI;

import java.util.*;

import javax.tools.*;

public class DocCommentToplevelTest {

    enum PackageKind {

        HAS_PKG("package pkg;"),

        NO_PKG("");

        String pkgStr;

        PackageKind(String pkgStr) {

            this.pkgStr = pkgStr;

        }

    }

    enum ImportKind {

        ZERO(""),

        ONE("import java.lang.*;"),

        TWO("import java.lang.*; import java.util.*;");

        String importStr;

        ImportKind(String importStr) {

            this.importStr = importStr;

        }

    }

    enum ModifierKind {

        DEFAULT(""),

        PUBLIC("public");

        String modStr;

        ModifierKind(String modStr) {

            this.modStr = modStr;

        }

    }

    enum ToplevelDocKind {

        HAS_DOC("/** Toplevel! */"),

        NO_DOC("");

        String docStr;

        ToplevelDocKind(String docStr) {

            this.docStr = docStr;

        }

    }

    static int errors;

    static int checks;

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

        //create default shared JavaCompiler - reused across multiple compilations

        JavaCompiler comp = ToolProvider.getSystemJavaCompiler();

                        }

                    }

                }

            }

    }

    PackageKind pk;

    ImportKind ik;

    ModifierKind mk1;

    ModifierKind mk2;

    ToplevelDocKind tdk;

    JavaSource source;

    DocCommentToplevelTest(PackageKind pk, ImportKind ik, ModifierKind mk1, ModifierKind mk2, ToplevelDocKind tdk) {

        this.pk = pk;

        this.ik = ik;

        this.mk1 = mk1;

        this.mk2 = mk2;

        this.tdk = tdk;

        source = new JavaSource();

    }

    void run(JavaCompiler comp, JavaFileManager fm) throws Exception {

        JavacTask task = (JavacTask)comp.getTask(null, fm, null, Arrays.asList("-printsource"), null, Arrays.asList(source));

        for (CompilationUnitTree cu: task.parse()) {

            check(cu);

        }

    }

    void check(CompilationUnitTree cu) {

        checks++;

        new TreeScanner<ClassTree,Void>() {

            DocCommentTable docComments;

            @Override

            public ClassTree visitCompilationUnit(CompilationUnitTree node, Void unused) {

                docComments = ((JCTree.JCCompilationUnit)node).docComments;

                boolean expectedComment = tdk == ToplevelDocKind.HAS_DOC &&

                                          pk == PackageKind.NO_PKG &&

                                          ik != ImportKind.ZERO;

                boolean foundComment = docComments.hasComment((JCTree) node);

                if (expectedComment != foundComment) {

                    error("Unexpected comment " + docComments.getComment((JCTree) node) + " on toplevel");

                }

                return super.visitCompilationUnit(node, null);

            }

            @Override

            public ClassTree visitPackage(PackageTree node, Void unused) {

                boolean expectedComment = tdk == ToplevelDocKind.HAS_DOC &&

                                          pk != PackageKind.NO_PKG;

                boolean foundComment = docComments.hasComment((JCTree) node);

                if (expectedComment != foundComment) {

                    error("Unexpected comment " + docComments.getComment((JCTree) node) + " on toplevel");

                }

                return super.visitPackage(node, null);

            }

            @Override

            public ClassTree visitClass(ClassTree node, Void unused) {

                boolean expectedComment = tdk == ToplevelDocKind.HAS_DOC &&

                        pk == PackageKind.NO_PKG && ik == ImportKind.ZERO &&

                        node.getSimpleName().toString().equals("First");

                boolean foundComment = docComments.hasComment((JCTree) node);

                if (expectedComment != foundComment) {

                    error("Unexpected comment " + docComments.getComment((JCTree) node) + " on class " + node.getSimpleName());

                }

                return super.visitClass(node, unused);

            }

        }.scan(cu, null);

    }

    void error(String msg) {

        System.err.println("Error: " + msg);

        System.err.println("Source: " + source.source);

        errors++;

    }

    class JavaSource extends SimpleJavaFileObject {

        String template = "#D\n#P\n#I\n" +

                          "#M1 class First { }\n" +

                          "#M2 class Second { }\n";

        String source;

        public JavaSource() {

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

            source = template.replace("#P", pk.pkgStr)

                             .replace("#I", ik.importStr)

                             .replace("#M1", mk1.modStr)

                             .replace("#M2", mk2.modStr)

                             .replace("#D", tdk.docStr);

        }

        @Override

        public CharSequence getCharContent(boolean ignoreEncodingErrors) {

            return source;

        }

    }

}