Only C programs have been tested.
Features later than c99 is not tested.
Make sure dot and atril is installed on your OS.
$bash gen_ast.sh <dir/filename> <scope name>
gcc (GCC) 7.2.1 20170915 (Red Hat 7.2.1-2) gcc (Gentoo 4.9.3 p1.2, pie-0.6.3) 4.9.3
/// 2018/01/12 Gao Zhiyuan created
///
/// Copyright (c) Computer Systems and Platforms Laboratory, SNU
/// All rights reserved.
///
/// Redistribution and use in source and binary forms, with or without modifi-
/// cation, are permitted provided that the following conditions are met:
///
/// - Redistributions of source code must retain the above copyright notice,
/// this list of conditions and the following disclaimer.
/// - Redistributions in binary form must reproduce the above copyright notice,
/// this list of conditions and the following disclaimer in the documentation
/// and/or other materials provided with the distribution.
///
/// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
/// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
/// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
/// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
/// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSE-
/// QUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
/// GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
/// HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
/// LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
/// OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
/// DAMAGE.