org.chromium.sdk.internal.v8native.protocol.output.DebuggerMessage.java Source code

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Here is the source code for org.chromium.sdk.internal.v8native.protocol.output.DebuggerMessage.java

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// Copyright (c) 2009 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

package org.chromium.sdk.internal.v8native.protocol.output;

import java.io.IOException;
import java.io.Writer;
import java.util.HashMap;
import java.util.LinkedHashMap;
import java.util.Map;

import org.json.simple.JSONStreamAware;
import org.json.simple.JSONValue;

/**
 * Represents a generic JSONStreamAware V8 request message (so that it can
 * serialize itself into JSON.)
 */
public class DebuggerMessage implements JSONStreamAware {

    private final int sequence;

    private final String command;

    private final Map<String, Object> arguments = new HashMap<String, Object>();

    public DebuggerMessage(String command) {
        this.sequence = SeqGenerator.getInstance().next();
        this.command = command;
    }

    public Integer getSeq() {
        return sequence;
    }

    public String getType() {
        return V8MessageType.REQUEST.value;
    }

    public String getCommand() {
        return command;
    }

    public Map<String, Object> getArguments() {
        return arguments;
    }

    protected final void putArgument(String key, Object object) {
        if (object != null) {
            arguments.put(key, object);
        }
    }

    protected final void putNullableArgument(String key, Object object) {
        arguments.put(key, object);
    }

    private final void putArgumentString(String key, Object object) {
        arguments.put(key, object.toString());
    }

    protected final void putArgumentStringIfNotNull(String key, Object object) {
        if (object != null) {
            putArgumentString(key, object);
        }
    }

    public void writeJSONString(Writer out) throws IOException {
        LinkedHashMap<String, Object> obj = new LinkedHashMap<String, Object>();
        obj.put("seq", sequence);
        obj.put("type", V8MessageType.REQUEST.value);
        obj.put("command", command);
        if (!arguments.isEmpty()) {
            obj.put("arguments", arguments);
        }
        JSONValue.writeJSONString(obj, out);
    }
}