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/*
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* 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
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/**
* Send your graphs to <b>IGV</b> via a socket or a file. This package allows one to easily encode
* any graph-like data structure and send it for visualization to <em>OracleLab's Ideal Graph
* Visualizer</em> tool. Assuming you already have your own data structure that contains
* <b>nodes</b> and <b>edges</b> among them, creating a {@link org.graalvm.graphio.GraphOutput}
* specialized for your data is a matter of implementing a single interface:
*
* {@link org.graalvm.graphio.GraphJavadocSnippets#acmeGraphStructure}
*
* The {@link org.graalvm.graphio.GraphStructure} interface defines the set of operations that are
* needed by the <em>graph protocol</em> to encode a graph into the <b>IGV</b> expected format. The
* graph structure is implemented as a so called
* <a href="http://wiki.apidesign.org/wiki/Singletonizer">singletonizer</a> API pattern: there is no
* need to change your data structures or implement some special interfaces - everything needed is
* provided by implementing the {@link org.graalvm.graphio.GraphStructure} operations.
* <p>
* The next step is to turn this graph structure into an instance of
* {@link org.graalvm.graphio.GraphOutput}. To do so use the associated
* {@link org.graalvm.graphio.GraphOutput.Builder builder} just like shown in the following method:
*
* {@link org.graalvm.graphio.GraphJavadocSnippets#buildOutput}
*
* Now you are ready to dump your graph into <b>IGV</b>. Where to obtain the right channel? One
* option is to create a {@link java.nio.channels.FileChannel} and dump the data into a file
* (preferrably with <code>.bgv</code> extension). The other is to open a socket to port
* <code>4445</code> (the default port <b>IGV</b> listens to) and dump the data there. Here is an
* example:
*
* {@link org.graalvm.graphio.GraphJavadocSnippets#dump}
*
* Call the {@code dump} method with pointer to file {@code diamond.bgv} and then you can open the
* file in <b>IGV</b>. The result will look like this:
* <p>
* <img src="doc-files/diamond.png">
* <p>
* You can verify the behavior directly in the <b>IGV</b> by downloading
* <a href="doc-files/diamond.bgv">diamond.bgv</a> file generated from the above diamond structure
* graph.
* <p>
* The primary <b>IGV</b> focus is on graphs used by Graal compiler. As such they aren't plain
* graphs, but contain various compiler oriented attributes:
* <ul>
* <li>{@linkplain org.graalvm.graphio.GraphBlocks code blocks} information</li>
* <li>{@linkplain org.graalvm.graphio.GraphElements method and fields} information</li>
* <li>Advanced support for {@linkplain org.graalvm.graphio.GraphTypes recognizing types}</li>
* </ul>
* all these additional interfaces ({@link org.graalvm.graphio.GraphBlocks},
* {@link org.graalvm.graphio.GraphElements} and {@link org.graalvm.graphio.GraphTypes}) are
* optional - they don't have to be provided. As such they can be specified via
* {@link org.graalvm.graphio.GraphOutput.Builder} instance methods, which may, but need not be
* called at all. Here is an example:
*
* {@link org.graalvm.graphio.GraphJavadocSnippets#buildAll}
*
* All these interfaces follow the
* <a href="http://wiki.apidesign.org/wiki/Singletonizer">singletonizer</a> API pattern again - e.g.
* no need to change your existing data structures, just implement the operations provided by the
* interfaces you pass into the builder. By combining these interfaces together you can get as rich,
* colorful, source linked graphs as Graal compiler produces to describe its optimizations.
*/
package org.graalvm.graphio;