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 * 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.  Sun designates this

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

 * by Sun 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,

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package com.sun.tools.example.debug.tty;

import com.sun.jdi.*;

import com.sun.jdi.request.EventRequest;

import com.sun.jdi.event.ClassPrepareEvent;

import java.util.ArrayList;

import java.util.Collections;

import java.util.Iterator;

import java.util.List;

import java.util.StringTokenizer;

class EventRequestSpecList {

    private static final int statusResolved = 1;

    private static final int statusUnresolved = 2;

    private static final int statusError = 3;

    // all specs

    private List<EventRequestSpec> eventRequestSpecs = Collections.synchronizedList(

                                                  new ArrayList<EventRequestSpec>());

    EventRequestSpecList() {

    }

    /**

     * Resolve all deferred eventRequests waiting for 'refType'.

     * @return true if it completes successfully, false on error.

     */

    boolean resolve(ClassPrepareEvent event) {

        boolean failure = false;

        synchronized(eventRequestSpecs) {

            for (EventRequestSpec spec : eventRequestSpecs) {

                if (!spec.isResolved()) {

                    try {

                        EventRequest eventRequest = spec.resolve(event);

                        if (eventRequest != null) {

                            MessageOutput.println("Set deferred", spec.toString());

                        }

                    } catch (Exception e) {

                        MessageOutput.println("Unable to set deferred",

                                              new Object [] {spec.toString(),

                                                             spec.errorMessageFor(e)});

                        failure = true;

                    }

                }

            }

        }

        return !failure;

    }

    void resolveAll() {

        for (EventRequestSpec spec : eventRequestSpecs) {

            try {

                EventRequest eventRequest = spec.resolveEagerly();

                if (eventRequest != null) {

                    MessageOutput.println("Set deferred", spec.toString());

                }

            } catch (Exception e) {

            }

        }

    }

    boolean addEagerlyResolve(EventRequestSpec spec) {

        try {

            eventRequestSpecs.add(spec);

            EventRequest eventRequest = spec.resolveEagerly();

            if (eventRequest != null) {

                MessageOutput.println("Set", spec.toString());

            }

            return true;

        } catch (Exception exc) {

            MessageOutput.println("Unable to set",

                                  new Object [] {spec.toString(),

                                                 spec.errorMessageFor(exc)});

            return false;

        }

    }

    BreakpointSpec createBreakpoint(String classPattern, int line)

        throws ClassNotFoundException {

        ReferenceTypeSpec refSpec =

            new PatternReferenceTypeSpec(classPattern);

        return new BreakpointSpec(refSpec, line);

    }

    BreakpointSpec createBreakpoint(String classPattern,

                                 String methodId,

                                    List<String> methodArgs)

                                throws MalformedMemberNameException,

                                       ClassNotFoundException {

        ReferenceTypeSpec refSpec =

            new PatternReferenceTypeSpec(classPattern);

        return new BreakpointSpec(refSpec, methodId, methodArgs);

    }

    EventRequestSpec createExceptionCatch(String classPattern,

                                          boolean notifyCaught,

                                          boolean notifyUncaught)

                                            throws ClassNotFoundException {

        ReferenceTypeSpec refSpec =

            new PatternReferenceTypeSpec(classPattern);

        return new ExceptionSpec(refSpec, notifyCaught, notifyUncaught);

    }

    WatchpointSpec createAccessWatchpoint(String classPattern,

                                       String fieldId)

                                      throws MalformedMemberNameException,

                                             ClassNotFoundException {

        ReferenceTypeSpec refSpec =

            new PatternReferenceTypeSpec(classPattern);

        return new AccessWatchpointSpec(refSpec, fieldId);

    }

    WatchpointSpec createModificationWatchpoint(String classPattern,

                                       String fieldId)

                                      throws MalformedMemberNameException,

                                             ClassNotFoundException {

        ReferenceTypeSpec refSpec =

            new PatternReferenceTypeSpec(classPattern);

        return new ModificationWatchpointSpec(refSpec, fieldId);

    }

    boolean delete(EventRequestSpec proto) {

        synchronized (eventRequestSpecs) {

            int inx = eventRequestSpecs.indexOf(proto);

            if (inx != -1) {

                EventRequestSpec spec = eventRequestSpecs.get(inx);

                spec.remove();

                eventRequestSpecs.remove(inx);

                return true;

            } else {

                return false;

            }

        }

    }

    List<EventRequestSpec> eventRequestSpecs() {

       // We need to make a copy to avoid synchronization problems

        synchronized (eventRequestSpecs) {

            return new ArrayList<EventRequestSpec>(eventRequestSpecs);

        }

    }

}