/*

 * Copyright (c) 2012, 2016, 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.  Oracle designates this

 * particular file as subject to the "Classpath" exception as provided

 * by Oracle in the LICENSE file that accompanied this code.

 *

 * 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.

 */

package jdk.javadoc.internal.tool;

import java.util.ArrayList;

import java.util.Arrays;

import java.util.EnumMap;

import java.util.LinkedHashMap;

import java.util.List;

import java.util.Map;

import javax.lang.model.element.ElementKind;

import com.sun.tools.javac.main.Option;

import com.sun.tools.javac.main.Option.OptionKind;

import com.sun.tools.javac.main.OptionHelper;

import com.sun.tools.javac.util.Options;

import static com.sun.tools.javac.main.Option.OptionKind.*;

/**

 * javadoc tool options.

 *

 *  <p><b>This is NOT part of any supported API.

 *  If you write code that depends on this, you do so at your own risk.

 *  This code and its internal interfaces are subject to change or

 *  deletion without notice.</b>

 */

public enum ToolOption {

    // ----- options for underlying compiler -----

    BOOTCLASSPATH("-bootclasspath", STANDARD, true) {

        @Override

        public void process(Helper helper, String arg) {

            helper.setFileManagerOpt(Option.BOOT_CLASS_PATH, arg);

        }

    },

    CLASS_PATH("--class-path -classpath -cp", STANDARD, true) {

        @Override

        public void process(Helper helper, String arg) {

            helper.setFileManagerOpt(Option.CLASS_PATH, arg);

        }

    },

    EXTDIRS("-extdirs", STANDARD, true) {

        @Override

        public void process(Helper helper, String arg) {

            helper.setFileManagerOpt(Option.EXTDIRS, arg);

        }

    },

    SOURCE_PATH("--source-path -sourcepath", STANDARD, true) {

        @Override

        public void process(Helper helper, String arg) {

            helper.setFileManagerOpt(Option.SOURCE_PATH, arg);

        }

    },

    SYSCLASSPATH("-sysclasspath", HIDDEN, true) {

        @Override

        public void process(Helper helper, String arg) {

            helper.setFileManagerOpt(Option.BOOT_CLASS_PATH, arg);

        }

    },

    MODULE_SOURCE_PATH("--module-source-path", STANDARD, true) {

        @Override

        public void process(Helper helper, String arg) {

            helper.setFileManagerOpt(Option.MODULE_SOURCE_PATH, arg);

        }

    },

    UPGRADE_MODULE_PATH("--upgrade-module-path", STANDARD, true) {

        @Override

        public void process(Helper helper, String arg) {

            helper.setFileManagerOpt(Option.UPGRADE_MODULE_PATH, arg);

        }

    },

    SYSTEM("--system", STANDARD, true) {

        @Override

        public void process(Helper helper, String arg) {

            helper.setFileManagerOpt(Option.SYSTEM, arg);

        }

    },

    MODULE_PATH("--module-path -p", STANDARD, true) {

        @Override

        public void process(Helper helper, String arg) {

            helper.setFileManagerOpt(Option.MODULE_PATH, arg);

        }

    },

    ADD_MODULES("--add-modules", STANDARD, true) {

        @Override

        public void process(Helper helper, String arg) {

            Option.ADD_MODULES.process(helper.getOptionHelper(), primaryName, arg);

        }

    },

    LIMIT_MODULES("--limit-modules", STANDARD, true) {

        @Override

        public void process(Helper helper, String arg) {

            Option.LIMIT_MODULES.process(helper.getOptionHelper(), primaryName, arg);

        }

    },

    MODULE("--module", STANDARD, true) {

        @Override

        public void process(Helper helper, String arg) {

            helper.addToList(this, ",", arg);

        }

    },

    ENCODING("-encoding", STANDARD, true) {

        @Override

        public void process(Helper helper, String arg) {

            helper.setFileManagerOpt(Option.ENCODING, arg);

        }

    },

    RELEASE("--release", STANDARD, true) {

        @Override

        public void process(Helper helper, String arg) {

            Option.RELEASE.process(helper.getOptionHelper(), primaryName, arg);

        }

    },

    SOURCE("-source", STANDARD, true) {

        @Override

        public void process(Helper helper, String arg) {

            Option.SOURCE.process(helper.getOptionHelper(), primaryName, arg);

        }

    },

    XMAXERRS("-Xmaxerrs", EXTENDED, true) {

        @Override

        public void process(Helper helper, String arg) {

            Option.XMAXERRS.process(helper.getOptionHelper(), primaryName, arg);

        }

    },

    XMAXWARNS("-Xmaxwarns", EXTENDED, true) {

        @Override

        public void process(Helper helper, String arg) {

            Option.XMAXWARNS.process(helper.getOptionHelper(), primaryName, arg);

        }

    },

    ADD_READS("--add-reads", EXTENDED, true) {

        @Override

        public void process(Helper helper, String arg) {

            Option.ADD_READS.process(helper.getOptionHelper(), primaryName, arg);

        }

    },

    ADD_EXPORTS("--add-exports", EXTENDED, true) {

        @Override

        public void process(Helper helper, String arg) {

            Option.ADD_EXPORTS.process(helper.getOptionHelper(), primaryName, arg);

        }

    },

    XMODULE("-Xmodule:", EXTENDED, false) {

        @Override

        public void process(Helper helper, String arg) {

            Option.XMODULE.process(helper.getOptionHelper(), arg);

        }

    },

    PATCH_MODULE("--patch-module", EXTENDED, true) {

        @Override

        public void process(Helper helper, String arg) {

            Option.PATCH_MODULE.process(helper.getOptionHelper(), primaryName, arg);

        }

    },

    // ----- doclet options -----

    DOCLET("-doclet", STANDARD, true), // handled in setDocletInvoker

    DOCLETPATH("-docletpath", STANDARD, true), // handled in setDocletInvoker

    // ----- selection options -----

    SUBPACKAGES("-subpackages", STANDARD, true) {

        @Override

        public void process(Helper helper, String arg) {

            helper.addToList(this, ":", arg);

        }

    },

    EXCLUDE("-exclude", STANDARD, true) {

        @Override

        public void process(Helper helper, String arg) {

            helper.addToList(this, ":", arg);

        }

    },

    // ----- filtering options -----

    PACKAGE("-package", STANDARD) {

        @Override

            helper.setSimpleFilter("package");

        }

    },

    PRIVATE("-private", STANDARD) {

        @Override

            helper.setSimpleFilter("private");

        }

    },

    PROTECTED("-protected", STANDARD) {

        @Override

            helper.setSimpleFilter("protected");

        }

    },

    PUBLIC("-public", STANDARD) {

        @Override

            helper.setSimpleFilter("public");

        }

    },

    SHOW_MEMBERS("--show-members", STANDARD, true) {

        @Override

            helper.setFilter(this, arg);

        }

    },

    SHOW_TYPES("--show-types", STANDARD, true) {

        @Override

            helper.setFilter(this, arg);

        }

    },

    SHOW_PACKAGES("--show-packages", STANDARD, true) {

        @Override

            helper.setShowPackageAccess(SHOW_PACKAGES, arg);

        }

    },

    SHOW_MODULE_CONTENTS("--show-module-contents", STANDARD, true) {

        @Override

            helper.setShowModuleContents(SHOW_MODULE_CONTENTS, arg);

        }

    },

    EXPAND_REQUIRES("--expand-requires", STANDARD, true) {

        @Override

            helper.setExpandRequires(EXPAND_REQUIRES, arg);

        }

    },

    // ----- output control options -----

    PROMPT("-prompt", HIDDEN) {

        @Override

        public void process(Helper helper) {

            helper.compOpts.put("-prompt", "-prompt");

            helper.promptOnError = true;

        }

    },

    QUIET("-quiet", STANDARD) {

        @Override

        public void process(Helper helper) {

            helper.jdtoolOpts.put(QUIET, true);

        }

    },

    VERBOSE("-verbose", STANDARD) {

        @Override

        public void process(Helper helper) {

            helper.compOpts.put("-verbose", "");

        }

    },

    XWERROR("-Xwerror", HIDDEN) {

        @Override

        public void process(Helper helper) {

            helper.rejectWarnings = true;

        }

    },

    // ----- other options -----

    BREAKITERATOR("-breakiterator", STANDARD) {

        @Override

        public void process(Helper helper) {

            helper.breakiterator = true;

        }

    },

    LOCALE("-locale", STANDARD, true) {

        @Override

        public void process(Helper helper, String arg) {

            helper.docLocale = arg;

        }

    },

    XCLASSES("-Xclasses", HIDDEN) {

        @Override

        public void process(Helper helper) {

            helper.jdtoolOpts.put(XCLASSES, true);

        }

    },

    // ----- help options -----

    HELP("--help -help", STANDARD) {

        @Override

        }

    },

    X("-X", STANDARD) {

        @Override

        }

    },

    // This option exists only for the purpose of documenting itself.

    // It's actually implemented by the launcher.

    J("-J", STANDARD, true) {

        @Override

        public void process(Helper helper) {

            throw new AssertionError("the -J flag should be caught by the launcher.");

        }

    },

    // This option exists only for the purpose of documenting itself.

    // It's actually implemented ahead of the normal option decoding loop.

    Xold("-Xold", EXTENDED) {

        @Override

        public void process(Helper helper) {

            throw new AssertionError("the -Xold flag should be handled earlier.");

        }

    };

    public final String primaryName;

    public final List<String> names;

    public final OptionKind kind;

    public final boolean hasArg;

    public final boolean hasSuffix; // ex: foo:bar or -foo=bar

    ToolOption(String opt, OptionKind kind) {

        this(opt, kind, false);

    }

    ToolOption(String names, OptionKind kind, boolean hasArg) {

        this.names = Arrays.asList(names.split("\\s+"));

        this.primaryName = this.names.get(0);

        this.kind = kind;

        this.hasArg = hasArg;

        char lastChar = names.charAt(names.length() - 1);

        this.hasSuffix = lastChar == ':' || lastChar == '=';

    }

    List<String> getNames() {

        return names;

    }

    String getParameters(Messager messager) {

        return (hasArg || primaryName.endsWith(":"))

                ? messager.getText(getKey(primaryName, ".arg"))

                : null;

    }

    String getDescription(Messager messager) {

        return messager.getText(getKey(primaryName, ".desc"));

    }

    private String getKey(String optionName, String suffix) {

        return "main.opt."

                + optionName

                .replaceAll("^-*", "")              // remove leading '-'

                .replaceAll("[^A-Za-z0-9]+$", "")   // remove trailing non-alphanumeric

                .replaceAll("[^A-Za-z0-9]", ".")    // replace internal non-alphanumeric

                + suffix;

    }

    static ToolOption get(String name) {

        String oname = name;

        if (name.contains(":")) {

            oname = name.substring(0, name.indexOf(':') + 1);

        } else if (name.contains("=")) {

            oname = name.substring(0, name.indexOf('='));

        }

        for (ToolOption o : values()) {

            for (String n : o.names) {

                if (oname.equals(n)) {

                    return o;

                }

            }

        }

        return null;

    }

    static abstract class Helper {

        // File manager options

        final Map<Option, String> fileManagerOpts = new LinkedHashMap<>();

        /** javac options, set by various options. */

        Options compOpts; // = Options.instance(context)

        /** Javadoc tool options */

        final Map<ToolOption, Object> jdtoolOpts = new EnumMap<>(ToolOption.class);

        /** Set by -breakiterator. */

        boolean breakiterator = false;

        /** Set by -Xwerror. */

        boolean rejectWarnings = false;

        /** Set by -prompt. */

        boolean promptOnError;

        /** Set by -locale. */

        String docLocale = "";

        Helper() {

            populateDefaultAccessMap();

        }

        abstract void usage();

        abstract void Xusage();

        abstract OptionHelper getOptionHelper();

        @SuppressWarnings("unchecked")

        void addToList(ToolOption opt, String delimiter, String str) {

            List<String> list = (List<String>) jdtoolOpts.computeIfAbsent(opt, v -> new ArrayList<>());

            list.addAll(Arrays.asList(str.split(delimiter)));

            jdtoolOpts.put(opt, list);

        }