com.goide.dlv.DlvVm.java Source code

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Here is the source code for com.goide.dlv.DlvVm.java

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/*
 * Copyright 2013-2016 Sergey Ignatov, Alexander Zolotov, Florin Patan
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.goide.dlv;

import com.intellij.openapi.diagnostic.Logger;
import com.intellij.openapi.vfs.CharsetToolkit;
import io.netty.buffer.ByteBuf;
import io.netty.channel.Channel;
import io.netty.channel.ChannelHandlerContext;
import io.netty.handler.codec.json.JsonObjectDecoder;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.concurrency.Promise;
import org.jetbrains.debugger.*;
import org.jetbrains.io.ChannelBufferToString;
import org.jetbrains.io.SimpleChannelInboundHandlerAdapter;
import org.jetbrains.jsonProtocol.Request;

import java.io.IOException;

public class DlvVm extends VmBase {
    private final static Logger LOG = Logger.getInstance(DlvVm.class);

    @NotNull
    private final DlvCommandProcessor commandProcessor;
    @NotNull
    private final StandaloneVmHelper vmHelper;
    @NotNull
    private final DummyBreakpointManager breakpointManager = new DummyBreakpointManager();

    public DlvVm(@NotNull DebugEventListener tabListener, @NotNull Channel channel) {
        super(tabListener);

        commandProcessor = new DlvCommandProcessor() {
            @Override
            public boolean write(@NotNull Request message) throws IOException {
                ByteBuf content = message.getBuffer();
                LOG.info("OUT: " + content.toString(CharsetToolkit.UTF8_CHARSET));
                return vmHelper.write(content);
            }
        };
        vmHelper = new StandaloneVmHelper(this, commandProcessor, channel);

        channel.pipeline().addLast(new JsonObjectDecoder(), new SimpleChannelInboundHandlerAdapter() {
            @Override
            protected void messageReceived(ChannelHandlerContext context, Object message) throws Exception {
                if (message instanceof ByteBuf) {
                    LOG.info("IN: " + ((ByteBuf) message).toString(CharsetToolkit.UTF8_CHARSET));
                    CharSequence string = ChannelBufferToString.readChars((ByteBuf) message);
                    JsonReaderEx ex = new JsonReaderEx(string);
                    getCommandProcessor().processIncomingJson(ex);
                }
            }
        });
    }

    @NotNull
    @Override
    public AttachStateManager getAttachStateManager() {
        return vmHelper;
    }

    @NotNull
    public final DlvCommandProcessor getCommandProcessor() {
        return commandProcessor;
    }

    @NotNull
    @Override
    public ScriptManagerBase<ScriptBase> getScriptManager() {
        throw new UnsupportedOperationException();
    }

    @NotNull
    @Override
    public BreakpointManager getBreakpointManager() {
        return breakpointManager;
    }

    /**
     * Changed API between minor versions, runtime is compatible
     * Todo: uncomment since 2016.2, when only the last build of 15.0 will be supported
     */
    @SuppressWarnings("unchecked")
    @NotNull
    @Override
    public SuspendContextManagerBase getSuspendContextManager() {
        return new SuspendContextManagerBase() {
            @NotNull
            @Override
            public Promise<Void> continueVm(@NotNull StepAction stepAction, int stepCount) {
                return Promise.DONE;
            }

            @NotNull
            @Override
            protected DebugEventListener getDebugListener() {
                return DlvVm.this.getDebugListener();
            }

            @NotNull
            @Override
            protected Promise<?> doSuspend() {
                return Promise.DONE;
            }
        };
    }
}