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--- /dev/null
+++ b/LICENSE.md
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+GNU General Public License
+==========================
+
+_Version 3, 29 June 2007_
+_Copyright © 2007 Free Software Foundation, Inc. &lt;<http://fsf.org/>&gt;_
+
+Everyone is permitted to copy and distribute verbatim copies of this license
+document, but changing it is not allowed.
+
+## Preamble
+
+The GNU General Public License is a free, copyleft license for software and other
+kinds of works.
+
+The licenses for most software and other practical works are designed to take away
+your freedom to share and change the works. By contrast, the GNU General Public
+License is intended to guarantee your freedom to share and change all versions of a
+program--to make sure it remains free software for all its users. We, the Free
+Software Foundation, use the GNU General Public License for most of our software; it
+applies also to any other work released this way by its authors. You can apply it to
+your programs, too.
+
+When we speak of free software, we are referring to freedom, not price. Our General
+Public Licenses are designed to make sure that you have the freedom to distribute
+copies of free software (and charge for them if you wish), that you receive source
+code or can get it if you want it, that you can change the software or use pieces of
+it in new free programs, and that you know you can do these things.
+
+To protect your rights, we need to prevent others from denying you these rights or
+asking you to surrender the rights. Therefore, you have certain responsibilities if
+you distribute copies of the software, or if you modify it: responsibilities to
+respect the freedom of others.
+
+For example, if you distribute copies of such a program, whether gratis or for a fee,
+you must pass on to the recipients the same freedoms that you received. You must make
+sure that they, too, receive or can get the source code. And you must show them these
+terms so they know their rights.
+
+Developers that use the GNU GPL protect your rights with two steps: **(1)** assert
+copyright on the software, and **(2)** offer you this License giving you legal permission
+to copy, distribute and/or modify it.
+
+For the developers' and authors' protection, the GPL clearly explains that there is
+no warranty for this free software. For both users' and authors' sake, the GPL
+requires that modified versions be marked as changed, so that their problems will not
+be attributed erroneously to authors of previous versions.
+
+Some devices are designed to deny users access to install or run modified versions of
+the software inside them, although the manufacturer can do so. This is fundamentally
+incompatible with the aim of protecting users' freedom to change the software. The
+systematic pattern of such abuse occurs in the area of products for individuals to
+use, which is precisely where it is most unacceptable. Therefore, we have designed
+this version of the GPL to prohibit the practice for those products. If such problems
+arise substantially in other domains, we stand ready to extend this provision to
+those domains in future versions of the GPL, as needed to protect the freedom of
+users.
+
+Finally, every program is threatened constantly by software patents. States should
+not allow patents to restrict development and use of software on general-purpose
+computers, but in those that do, we wish to avoid the special danger that patents
+applied to a free program could make it effectively proprietary. To prevent this, the
+GPL assures that patents cannot be used to render the program non-free.
+
+The precise terms and conditions for copying, distribution and modification follow.
+
+## TERMS AND CONDITIONS
+
+### 0. Definitions
+
+“This License” refers to version 3 of the GNU General Public License.
+
+“Copyright” also means copyright-like laws that apply to other kinds of
+works, such as semiconductor masks.
+
+“The Program” refers to any copyrightable work licensed under this
+License. Each licensee is addressed as “you”. “Licensees” and
+“recipients” may be individuals or organizations.
+
+To “modify” a work means to copy from or adapt all or part of the work in
+a fashion requiring copyright permission, other than the making of an exact copy. The
+resulting work is called a “modified version” of the earlier work or a
+work “based on” the earlier work.
+
+A “covered work” means either the unmodified Program or a work based on
+the Program.
+
+To “propagate” a work means to do anything with it that, without
+permission, would make you directly or secondarily liable for infringement under
+applicable copyright law, except executing it on a computer or modifying a private
+copy. Propagation includes copying, distribution (with or without modification),
+making available to the public, and in some countries other activities as well.
+
+To “convey” a work means any kind of propagation that enables other
+parties to make or receive copies. Mere interaction with a user through a computer
+network, with no transfer of a copy, is not conveying.
+
+An interactive user interface displays “Appropriate Legal Notices” to the
+extent that it includes a convenient and prominently visible feature that **(1)**
+displays an appropriate copyright notice, and **(2)** tells the user that there is no
+warranty for the work (except to the extent that warranties are provided), that
+licensees may convey the work under this License, and how to view a copy of this
+License. If the interface presents a list of user commands or options, such as a
+menu, a prominent item in the list meets this criterion.
+
+### 1. Source Code
+
+The “source code” for a work means the preferred form of the work for
+making modifications to it. “Object code” means any non-source form of a
+work.
+
+A “Standard Interface” means an interface that either is an official
+standard defined by a recognized standards body, or, in the case of interfaces
+specified for a particular programming language, one that is widely used among
+developers working in that language.
+
+The “System Libraries” of an executable work include anything, other than
+the work as a whole, that **(a)** is included in the normal form of packaging a Major
+Component, but which is not part of that Major Component, and **(b)** serves only to
+enable use of the work with that Major Component, or to implement a Standard
+Interface for which an implementation is available to the public in source code form.
+A “Major Component”, in this context, means a major essential component
+(kernel, window system, and so on) of the specific operating system (if any) on which
+the executable work runs, or a compiler used to produce the work, or an object code
+interpreter used to run it.
+
+The “Corresponding Source” for a work in object code form means all the
+source code needed to generate, install, and (for an executable work) run the object
+code and to modify the work, including scripts to control those activities. However,
+it does not include the work's System Libraries, or general-purpose tools or
+generally available free programs which are used unmodified in performing those
+activities but which are not part of the work. For example, Corresponding Source
+includes interface definition files associated with source files for the work, and
+the source code for shared libraries and dynamically linked subprograms that the work
+is specifically designed to require, such as by intimate data communication or
+control flow between those subprograms and other parts of the work.
+
+The Corresponding Source need not include anything that users can regenerate
+automatically from other parts of the Corresponding Source.
+
+The Corresponding Source for a work in source code form is that same work.
+
+### 2. Basic Permissions
+
+All rights granted under this License are granted for the term of copyright on the
+Program, and are irrevocable provided the stated conditions are met. This License
+explicitly affirms your unlimited permission to run the unmodified Program. The
+output from running a covered work is covered by this License only if the output,
+given its content, constitutes a covered work. This License acknowledges your rights
+of fair use or other equivalent, as provided by copyright law.
+
+You may make, run and propagate covered works that you do not convey, without
+conditions so long as your license otherwise remains in force. You may convey covered
+works to others for the sole purpose of having them make modifications exclusively
+for you, or provide you with facilities for running those works, provided that you
+comply with the terms of this License in conveying all material for which you do not
+control copyright. Those thus making or running the covered works for you must do so
+exclusively on your behalf, under your direction and control, on terms that prohibit
+them from making any copies of your copyrighted material outside their relationship
+with you.
+
+Conveying under any other circumstances is permitted solely under the conditions
+stated below. Sublicensing is not allowed; section 10 makes it unnecessary.
+
+### 3. Protecting Users' Legal Rights From Anti-Circumvention Law
+
+No covered work shall be deemed part of an effective technological measure under any
+applicable law fulfilling obligations under article 11 of the WIPO copyright treaty
+adopted on 20 December 1996, or similar laws prohibiting or restricting circumvention
+of such measures.
+
+When you convey a covered work, you waive any legal power to forbid circumvention of
+technological measures to the extent such circumvention is effected by exercising
+rights under this License with respect to the covered work, and you disclaim any
+intention to limit operation or modification of the work as a means of enforcing,
+against the work's users, your or third parties' legal rights to forbid circumvention
+of technological measures.
+
+### 4. Conveying Verbatim Copies
+
+You may convey verbatim copies of the Program's source code as you receive it, in any
+medium, provided that you conspicuously and appropriately publish on each copy an
+appropriate copyright notice; keep intact all notices stating that this License and
+any non-permissive terms added in accord with section 7 apply to the code; keep
+intact all notices of the absence of any warranty; and give all recipients a copy of
+this License along with the Program.
+
+You may charge any price or no price for each copy that you convey, and you may offer
+support or warranty protection for a fee.
+
+### 5. Conveying Modified Source Versions
+
+You may convey a work based on the Program, or the modifications to produce it from
+the Program, in the form of source code under the terms of section 4, provided that
+you also meet all of these conditions:
+
+* **a)** The work must carry prominent notices stating that you modified it, and giving a
+relevant date.
+* **b)** The work must carry prominent notices stating that it is released under this
+License and any conditions added under section 7. This requirement modifies the
+requirement in section 4 to “keep intact all notices”.
+* **c)** You must license the entire work, as a whole, under this License to anyone who
+comes into possession of a copy. This License will therefore apply, along with any
+applicable section 7 additional terms, to the whole of the work, and all its parts,
+regardless of how they are packaged. This License gives no permission to license the
+work in any other way, but it does not invalidate such permission if you have
+separately received it.
+* **d)** If the work has interactive user interfaces, each must display Appropriate Legal
+Notices; however, if the Program has interactive interfaces that do not display
+Appropriate Legal Notices, your work need not make them do so.
+
+A compilation of a covered work with other separate and independent works, which are
+not by their nature extensions of the covered work, and which are not combined with
+it such as to form a larger program, in or on a volume of a storage or distribution
+medium, is called an “aggregate” if the compilation and its resulting
+copyright are not used to limit the access or legal rights of the compilation's users
+beyond what the individual works permit. Inclusion of a covered work in an aggregate
+does not cause this License to apply to the other parts of the aggregate.
+
+### 6. Conveying Non-Source Forms
+
+You may convey a covered work in object code form under the terms of sections 4 and
+5, provided that you also convey the machine-readable Corresponding Source under the
+terms of this License, in one of these ways:
+
+* **a)** Convey the object code in, or embodied in, a physical product (including a
+physical distribution medium), accompanied by the Corresponding Source fixed on a
+durable physical medium customarily used for software interchange.
+* **b)** Convey the object code in, or embodied in, a physical product (including a
+physical distribution medium), accompanied by a written offer, valid for at least
+three years and valid for as long as you offer spare parts or customer support for
+that product model, to give anyone who possesses the object code either **(1)** a copy of
+the Corresponding Source for all the software in the product that is covered by this
+License, on a durable physical medium customarily used for software interchange, for
+a price no more than your reasonable cost of physically performing this conveying of
+source, or **(2)** access to copy the Corresponding Source from a network server at no
+charge.
+* **c)** Convey individual copies of the object code with a copy of the written offer to
+provide the Corresponding Source. This alternative is allowed only occasionally and
+noncommercially, and only if you received the object code with such an offer, in
+accord with subsection 6b.
+* **d)** Convey the object code by offering access from a designated place (gratis or for
+a charge), and offer equivalent access to the Corresponding Source in the same way
+through the same place at no further charge. You need not require recipients to copy
+the Corresponding Source along with the object code. If the place to copy the object
+code is a network server, the Corresponding Source may be on a different server
+(operated by you or a third party) that supports equivalent copying facilities,
+provided you maintain clear directions next to the object code saying where to find
+the Corresponding Source. Regardless of what server hosts the Corresponding Source,
+you remain obligated to ensure that it is available for as long as needed to satisfy
+these requirements.
+* **e)** Convey the object code using peer-to-peer transmission, provided you inform
+other peers where the object code and Corresponding Source of the work are being
+offered to the general public at no charge under subsection 6d.
+
+A separable portion of the object code, whose source code is excluded from the
+Corresponding Source as a System Library, need not be included in conveying the
+object code work.
+
+A “User Product” is either **(1)** a “consumer product”, which
+means any tangible personal property which is normally used for personal, family, or
+household purposes, or **(2)** anything designed or sold for incorporation into a
+dwelling. In determining whether a product is a consumer product, doubtful cases
+shall be resolved in favor of coverage. For a particular product received by a
+particular user, “normally used” refers to a typical or common use of
+that class of product, regardless of the status of the particular user or of the way
+in which the particular user actually uses, or expects or is expected to use, the
+product. A product is a consumer product regardless of whether the product has
+substantial commercial, industrial or non-consumer uses, unless such uses represent
+the only significant mode of use of the product.
+
+“Installation Information” for a User Product means any methods,
+procedures, authorization keys, or other information required to install and execute
+modified versions of a covered work in that User Product from a modified version of
+its Corresponding Source. The information must suffice to ensure that the continued
+functioning of the modified object code is in no case prevented or interfered with
+solely because modification has been made.
+
+If you convey an object code work under this section in, or with, or specifically for
+use in, a User Product, and the conveying occurs as part of a transaction in which
+the right of possession and use of the User Product is transferred to the recipient
+in perpetuity or for a fixed term (regardless of how the transaction is
+characterized), the Corresponding Source conveyed under this section must be
+accompanied by the Installation Information. But this requirement does not apply if
+neither you nor any third party retains the ability to install modified object code
+on the User Product (for example, the work has been installed in ROM).
+
+The requirement to provide Installation Information does not include a requirement to
+continue to provide support service, warranty, or updates for a work that has been
+modified or installed by the recipient, or for the User Product in which it has been
+modified or installed. Access to a network may be denied when the modification itself
+materially and adversely affects the operation of the network or violates the rules
+and protocols for communication across the network.
+
+Corresponding Source conveyed, and Installation Information provided, in accord with
+this section must be in a format that is publicly documented (and with an
+implementation available to the public in source code form), and must require no
+special password or key for unpacking, reading or copying.
+
+### 7. Additional Terms
+
+“Additional permissions” are terms that supplement the terms of this
+License by making exceptions from one or more of its conditions. Additional
+permissions that are applicable to the entire Program shall be treated as though they
+were included in this License, to the extent that they are valid under applicable
+law. If additional permissions apply only to part of the Program, that part may be
+used separately under those permissions, but the entire Program remains governed by
+this License without regard to the additional permissions.
+
+When you convey a copy of a covered work, you may at your option remove any
+additional permissions from that copy, or from any part of it. (Additional
+permissions may be written to require their own removal in certain cases when you
+modify the work.) You may place additional permissions on material, added by you to a
+covered work, for which you have or can give appropriate copyright permission.
+
+Notwithstanding any other provision of this License, for material you add to a
+covered work, you may (if authorized by the copyright holders of that material)
+supplement the terms of this License with terms:
+
+* **a)** Disclaiming warranty or limiting liability differently from the terms of
+sections 15 and 16 of this License; or
+* **b)** Requiring preservation of specified reasonable legal notices or author
+attributions in that material or in the Appropriate Legal Notices displayed by works
+containing it; or
+* **c)** Prohibiting misrepresentation of the origin of that material, or requiring that
+modified versions of such material be marked in reasonable ways as different from the
+original version; or
+* **d)** Limiting the use for publicity purposes of names of licensors or authors of the
+material; or
+* **e)** Declining to grant rights under trademark law for use of some trade names,
+trademarks, or service marks; or
+* **f)** Requiring indemnification of licensors and authors of that material by anyone
+who conveys the material (or modified versions of it) with contractual assumptions of
+liability to the recipient, for any liability that these contractual assumptions
+directly impose on those licensors and authors.
+
+All other non-permissive additional terms are considered “further
+restrictions” within the meaning of section 10. If the Program as you received
+it, or any part of it, contains a notice stating that it is governed by this License
+along with a term that is a further restriction, you may remove that term. If a
+license document contains a further restriction but permits relicensing or conveying
+under this License, you may add to a covered work material governed by the terms of
+that license document, provided that the further restriction does not survive such
+relicensing or conveying.
+
+If you add terms to a covered work in accord with this section, you must place, in
+the relevant source files, a statement of the additional terms that apply to those
+files, or a notice indicating where to find the applicable terms.
+
+Additional terms, permissive or non-permissive, may be stated in the form of a
+separately written license, or stated as exceptions; the above requirements apply
+either way.
+
+### 8. Termination
+
+You may not propagate or modify a covered work except as expressly provided under
+this License. Any attempt otherwise to propagate or modify it is void, and will
+automatically terminate your rights under this License (including any patent licenses
+granted under the third paragraph of section 11).
+
+However, if you cease all violation of this License, then your license from a
+particular copyright holder is reinstated **(a)** provisionally, unless and until the
+copyright holder explicitly and finally terminates your license, and **(b)** permanently,
+if the copyright holder fails to notify you of the violation by some reasonable means
+prior to 60 days after the cessation.
+
+Moreover, your license from a particular copyright holder is reinstated permanently
+if the copyright holder notifies you of the violation by some reasonable means, this
+is the first time you have received notice of violation of this License (for any
+work) from that copyright holder, and you cure the violation prior to 30 days after
+your receipt of the notice.
+
+Termination of your rights under this section does not terminate the licenses of
+parties who have received copies or rights from you under this License. If your
+rights have been terminated and not permanently reinstated, you do not qualify to
+receive new licenses for the same material under section 10.
+
+### 9. Acceptance Not Required for Having Copies
+
+You are not required to accept this License in order to receive or run a copy of the
+Program. Ancillary propagation of a covered work occurring solely as a consequence of
+using peer-to-peer transmission to receive a copy likewise does not require
+acceptance. However, nothing other than this License grants you permission to
+propagate or modify any covered work. These actions infringe copyright if you do not
+accept this License. Therefore, by modifying or propagating a covered work, you
+indicate your acceptance of this License to do so.
+
+### 10. Automatic Licensing of Downstream Recipients
+
+Each time you convey a covered work, the recipient automatically receives a license
+from the original licensors, to run, modify and propagate that work, subject to this
+License. You are not responsible for enforcing compliance by third parties with this
+License.
+
+An “entity transaction” is a transaction transferring control of an
+organization, or substantially all assets of one, or subdividing an organization, or
+merging organizations. If propagation of a covered work results from an entity
+transaction, each party to that transaction who receives a copy of the work also
+receives whatever licenses to the work the party's predecessor in interest had or
+could give under the previous paragraph, plus a right to possession of the
+Corresponding Source of the work from the predecessor in interest, if the predecessor
+has it or can get it with reasonable efforts.
+
+You may not impose any further restrictions on the exercise of the rights granted or
+affirmed under this License. For example, you may not impose a license fee, royalty,
+or other charge for exercise of rights granted under this License, and you may not
+initiate litigation (including a cross-claim or counterclaim in a lawsuit) alleging
+that any patent claim is infringed by making, using, selling, offering for sale, or
+importing the Program or any portion of it.
+
+### 11. Patents
+
+A “contributor” is a copyright holder who authorizes use under this
+License of the Program or a work on which the Program is based. The work thus
+licensed is called the contributor's “contributor version”.
+
+A contributor's “essential patent claims” are all patent claims owned or
+controlled by the contributor, whether already acquired or hereafter acquired, that
+would be infringed by some manner, permitted by this License, of making, using, or
+selling its contributor version, but do not include claims that would be infringed
+only as a consequence of further modification of the contributor version. For
+purposes of this definition, “control” includes the right to grant patent
+sublicenses in a manner consistent with the requirements of this License.
+
+Each contributor grants you a non-exclusive, worldwide, royalty-free patent license
+under the contributor's essential patent claims, to make, use, sell, offer for sale,
+import and otherwise run, modify and propagate the contents of its contributor
+version.
+
+In the following three paragraphs, a “patent license” is any express
+agreement or commitment, however denominated, not to enforce a patent (such as an
+express permission to practice a patent or covenant not to sue for patent
+infringement). To “grant” such a patent license to a party means to make
+such an agreement or commitment not to enforce a patent against the party.
+
+If you convey a covered work, knowingly relying on a patent license, and the
+Corresponding Source of the work is not available for anyone to copy, free of charge
+and under the terms of this License, through a publicly available network server or
+other readily accessible means, then you must either **(1)** cause the Corresponding
+Source to be so available, or **(2)** arrange to deprive yourself of the benefit of the
+patent license for this particular work, or **(3)** arrange, in a manner consistent with
+the requirements of this License, to extend the patent license to downstream
+recipients. “Knowingly relying” means you have actual knowledge that, but
+for the patent license, your conveying the covered work in a country, or your
+recipient's use of the covered work in a country, would infringe one or more
+identifiable patents in that country that you have reason to believe are valid.
+
+If, pursuant to or in connection with a single transaction or arrangement, you
+convey, or propagate by procuring conveyance of, a covered work, and grant a patent
+license to some of the parties receiving the covered work authorizing them to use,
+propagate, modify or convey a specific copy of the covered work, then the patent
+license you grant is automatically extended to all recipients of the covered work and
+works based on it.
+
+A patent license is “discriminatory” if it does not include within the
+scope of its coverage, prohibits the exercise of, or is conditioned on the
+non-exercise of one or more of the rights that are specifically granted under this
+License. You may not convey a covered work if you are a party to an arrangement with
+a third party that is in the business of distributing software, under which you make
+payment to the third party based on the extent of your activity of conveying the
+work, and under which the third party grants, to any of the parties who would receive
+the covered work from you, a discriminatory patent license **(a)** in connection with
+copies of the covered work conveyed by you (or copies made from those copies), or **(b)**
+primarily for and in connection with specific products or compilations that contain
+the covered work, unless you entered into that arrangement, or that patent license
+was granted, prior to 28 March 2007.
+
+Nothing in this License shall be construed as excluding or limiting any implied
+license or other defenses to infringement that may otherwise be available to you
+under applicable patent law.
+
+### 12. No Surrender of Others' Freedom
+
+If conditions are imposed on you (whether by court order, agreement or otherwise)
+that contradict the conditions of this License, they do not excuse you from the
+conditions of this License. If you cannot convey a covered work so as to satisfy
+simultaneously your obligations under this License and any other pertinent
+obligations, then as a consequence you may not convey it at all. For example, if you
+agree to terms that obligate you to collect a royalty for further conveying from
+those to whom you convey the Program, the only way you could satisfy both those terms
+and this License would be to refrain entirely from conveying the Program.
+
+### 13. Use with the GNU Affero General Public License
+
+Notwithstanding any other provision of this License, you have permission to link or
+combine any covered work with a work licensed under version 3 of the GNU Affero
+General Public License into a single combined work, and to convey the resulting work.
+The terms of this License will continue to apply to the part which is the covered
+work, but the special requirements of the GNU Affero General Public License, section
+13, concerning interaction through a network will apply to the combination as such.
+
+### 14. Revised Versions of this License
+
+The Free Software Foundation may publish revised and/or new versions of the GNU
+General Public License from time to time. Such new versions will be similar in spirit
+to the present version, but may differ in detail to address new problems or concerns.
+
+Each version is given a distinguishing version number. If the Program specifies that
+a certain numbered version of the GNU General Public License “or any later
+version” applies to it, you have the option of following the terms and
+conditions either of that numbered version or of any later version published by the
+Free Software Foundation. If the Program does not specify a version number of the GNU
+General Public License, you may choose any version ever published by the Free
+Software Foundation.
+
+If the Program specifies that a proxy can decide which future versions of the GNU
+General Public License can be used, that proxy's public statement of acceptance of a
+version permanently authorizes you to choose that version for the Program.
+
+Later license versions may give you additional or different permissions. However, no
+additional obligations are imposed on any author or copyright holder as a result of
+your choosing to follow a later version.
+
+### 15. Disclaimer of Warranty
+
+THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW.
+EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES
+PROVIDE THE PROGRAM “AS IS” WITHOUT WARRANTY OF ANY KIND, EITHER
+EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS TO THE
+QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE PROGRAM PROVE
+DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
+
+### 16. Limitation of Liability
+
+IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING WILL ANY
+COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS THE PROGRAM AS
+PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY GENERAL, SPECIAL,
+INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OR INABILITY TO USE THE
+PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE
+OR LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE
+WITH ANY OTHER PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE
+POSSIBILITY OF SUCH DAMAGES.
+
+### 17. Interpretation of Sections 15 and 16
+
+If the disclaimer of warranty and limitation of liability provided above cannot be
+given local legal effect according to their terms, reviewing courts shall apply local
+law that most closely approximates an absolute waiver of all civil liability in
+connection with the Program, unless a warranty or assumption of liability accompanies
+a copy of the Program in return for a fee.
+
+_END OF TERMS AND CONDITIONS_
+
+## How to Apply These Terms to Your New Programs
+
+If you develop a new program, and you want it to be of the greatest possible use to
+the public, the best way to achieve this is to make it free software which everyone
+can redistribute and change under these terms.
+
+To do so, attach the following notices to the program. It is safest to attach them
+to the start of each source file to most effectively state the exclusion of warranty;
+and each file should have at least the “copyright” line and a pointer to
+where the full notice is found.
+
+    <one line to give the program's name and a brief idea of what it does.>
+    Copyright (C) <year>  <name of author>
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program 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 for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+Also add information on how to contact you by electronic and paper mail.
+
+If the program does terminal interaction, make it output a short notice like this
+when it starts in an interactive mode:
+
+    <program>  Copyright (C) <year>  <name of author>
+    This program comes with ABSOLUTELY NO WARRANTY; for details type 'show w'.
+    This is free software, and you are welcome to redistribute it
+    under certain conditions; type 'show c' for details.
+
+The hypothetical commands `show w` and `show c` should show the appropriate parts of
+the General Public License. Of course, your program's commands might be different;
+for a GUI interface, you would use an “about box”.
+
+You should also get your employer (if you work as a programmer) or school, if any, to
+sign a “copyright disclaimer” for the program, if necessary. For more
+information on this, and how to apply and follow the GNU GPL, see
+&lt;<http://www.gnu.org/licenses/>&gt;.
+
+The GNU General Public License does not permit incorporating your program into
+proprietary programs. If your program is a subroutine library, you may consider it
+more useful to permit linking proprietary applications with the library. If this is
+what you want to do, use the GNU Lesser General Public License instead of this
+License. But first, please read
+&lt;<http://www.gnu.org/philosophy/why-not-lgpl.html>&gt;.
diff --git a/Setup.lhs b/Setup.lhs
new file mode 100644
--- /dev/null
+++ b/Setup.lhs
@@ -0,0 +1,3 @@
+#!/usr/bin/env runhaskell
+> import Distribution.Simple
+> main = defaultMain
diff --git a/src/Tokstyle/C.hs b/src/Tokstyle/C.hs
new file mode 100644
--- /dev/null
+++ b/src/Tokstyle/C.hs
@@ -0,0 +1,72 @@
+module Tokstyle.C (main) where
+
+import           Control.Applicative             ((<$>))
+import qualified Data.List                       as List
+import           Language.C                      (CError, CTranslUnit,
+                                                  ErrorInfo (..), InputStream,
+                                                  errorInfo, initPos, parseC,
+                                                  posFile, posRow)
+import           Language.C.Analysis.AstAnalysis (analyseAST)
+import           Language.C.Analysis.SemRep      (GlobalDecls)
+import           Language.C.Analysis.TravMonad   (runTrav_)
+import           Language.C.System.GCC           (newGCC)
+import           Language.C.System.Preprocess    (rawCppArgs, runPreprocessor)
+import           System.Environment              (getArgs)
+
+import qualified Tokstyle.C.Naming
+import           Tokstyle.Result
+
+
+phaseCpp :: FilePath -> IO InputStream
+phaseCpp file = do
+    cppArgs <- (["-std=c99", "-U__BLOCKS__", "-D_VA_LIST", "-D_Nonnull=", "-D_Nullable=", "-D__attribute__(x)="] ++) <$> getArgs
+    result <- runPreprocessor (newGCC "gcc") $ rawCppArgs cppArgs file
+    case result of
+        Left err -> fail $ show err
+        Right ok -> return ok
+
+
+phaseParse :: FilePath -> InputStream -> Result CTranslUnit
+phaseParse file preprocessed =
+    case parseC preprocessed (initPos file) of
+        Left err -> fail $ show err
+        Right tu -> return tu
+
+
+phaseAnalyse :: CTranslUnit -> Result (CTranslUnit, GlobalDecls, [CError])
+phaseAnalyse tu =
+    case runTrav_ (analyseAST tu) of
+        Left errs           -> fail $ concatMap show errs
+        Right (decls, cerr) -> return (tu, decls, cerr)
+
+
+phaseCheck :: (CTranslUnit, GlobalDecls, [CError]) -> [CError]
+phaseCheck (tu, decls, _cerr) =
+    --cerr ++
+    Tokstyle.C.Naming.check tu decls
+
+
+printError :: ErrorInfo -> IO ()
+printError (ErrorInfo _ pos msgs) =
+    putStrLn $ file ++ ":" ++ show line ++ ": " ++ List.intercalate "\n\t" msgs
+  where
+    file = posFile pos
+    line = posRow  pos
+
+
+showResult :: Result [CError] -> IO ()
+showResult (Success cerr) = mapM_ (printError . errorInfo) cerr
+showResult (Failure  err) = putStr err
+
+
+process :: FilePath -> IO ()
+process path = do
+  preprocessed <- phaseCpp path
+  let analysis = phaseParse path preprocessed >>= phaseAnalyse
+  let results = phaseCheck <$> analysis
+  showResult results
+
+main :: [String] -> IO ()
+main sources = do
+    putStrLn "[=] preprocessing..."
+    mapM_ process sources
diff --git a/src/Tokstyle/C/Naming.hs b/src/Tokstyle/C/Naming.hs
new file mode 100644
--- /dev/null
+++ b/src/Tokstyle/C/Naming.hs
@@ -0,0 +1,78 @@
+{-# LANGUAGE LambdaCase #-}
+module Tokstyle.C.Naming where
+
+import qualified Data.Char                  as Char
+import qualified Data.List                  as List
+import           Language.C
+import           Language.C.Analysis.SemRep
+import           Language.C.Data.Ident
+import           System.FilePath
+
+
+getSrcFile :: NodeInfo -> String
+getSrcFile (OnlyPos  _ (pos, _)  ) = posFile pos
+getSrcFile (NodeInfo _ (pos, _) _) = posFile pos
+
+
+toLower :: String -> String
+toLower = map Char.toLower
+
+
+check :: CTranslUnit -> GlobalDecls -> [CError]
+check (CTranslUnit edecls ni) _ =
+    reverse . map (CError . mkNamingError) . foldl globalNamesCED [] $ edecls
+  where
+    srcFile = getSrcFile ni
+    namespace =
+        case toLower . takeFileName . dropExtension $ srcFile of
+            "audio"          -> "ac"
+            "bwcontroller"   -> "bwc"
+            "list"           -> "bs_list"
+            "messenger"      -> "m"
+            "network"        -> "net"
+            "onion_announce" -> "onion"
+            "onion_client"   -> "onion"
+            "ring_buffer"    -> "rb"
+            "video"          -> "vc"
+            ns               -> ns
+
+    mkNamingError (Ident name _ nameNi) =
+        mkErrorInfo LevelWarn name nameNi
+
+    globalNamesCED names (CDeclExt cde) =
+        globalNamesCDE names cde
+    globalNamesCED names (CFDefExt cfde) =
+        globalNamesCFDE names cfde
+    globalNamesCED names _ = names
+
+    globalNamesCFDE names (CFunDef declspec dcl _ _ _) =
+        if isGlobal declspec
+            then globalNamesCDR names dcl
+            else names
+
+    globalNamesCDE names (CDecl declspec dcls _) =
+        if isGlobal declspec
+            then foldl globalNamesCDL names dcls
+            else names
+    globalNamesCDE names _ = names
+
+    globalNamesCDL names (Just cdr, _, _) =
+        globalNamesCDR names cdr
+    globalNamesCDL names _ = names
+
+    globalNamesCDR names (CDeclr (Just name) _ _ _ nameNi) =
+        if getSrcFile nameNi == srcFile
+        && (violatesNamingScheme . toLower . identToString $ name)
+            then name : names
+            else names
+    globalNamesCDR names _ = names
+
+    isGlobal = all $ \case
+        CStorageSpec (CStatic _) -> False
+        _ -> True
+
+    violatesNamingScheme name =
+        not (
+            name == namespace ||
+            List.isPrefixOf (namespace ++ "_") name
+        )
diff --git a/src/Tokstyle/Cimple.hs b/src/Tokstyle/Cimple.hs
new file mode 100644
--- /dev/null
+++ b/src/Tokstyle/Cimple.hs
@@ -0,0 +1,21 @@
+module Tokstyle.Cimple (main) where
+
+--import           Text.Groom             (groom)
+import           Tokstyle.Cimple.Lexer  (alexScanTokens, runAlex)
+import           Tokstyle.Cimple.Parser (parseCimple)
+
+
+main :: [String] -> IO ()
+main sources = do
+    putStrLn "[=] reading..."
+    contents <- mapM readFile sources
+    {-
+    putStrLn "[=] lexing..."
+    let tokens = map alexScanTokens contents
+    mapM_ (putStrLn . groom) tokens
+    -}
+    putStrLn "[=] parsing..."
+    let ast = map (`runAlex` parseCimple) contents
+    -- mapM_ (putStrLn . groom) ast
+    mapM_ print ast
+    return ()
diff --git a/src/Tokstyle/Cimple/Lexer.x b/src/Tokstyle/Cimple/Lexer.x
new file mode 100644
--- /dev/null
+++ b/src/Tokstyle/Cimple/Lexer.x
@@ -0,0 +1,328 @@
+{
+module Tokstyle.Cimple.Lexer
+    ( Alex
+    , Lexeme (..)
+    , LexemeClass (..)
+    , alexScanTokens
+    , alexMonadScan
+    , runAlex
+    ) where
+}
+
+%wrapper "monad"
+
+tokens :-
+
+-- Ignore attributes.
+<0,ppSC>	"GNU_PRINTF("[^\)]+")"			;
+<0,ppSC>	"VLA"					{ mkL KwVla }
+
+-- Winapi functions.
+<0,ppSC>	"WSAAddressToString"			{ mkL IdVar }
+<0,ppSC>	"LocalFree"				{ mkL IdVar }
+<0,ppSC>	"FormatMessageA"			{ mkL IdVar }
+<0,ppSC>	"WSAGetLastError"			{ mkL IdVar }
+<0,ppSC>	"WSAStringToAddress"			{ mkL IdVar }
+<0,ppSC>	"WSAStartup"				{ mkL IdVar }
+<0,ppSC>	"GetAdaptersInfo"			{ mkL IdVar }
+<0,ppSC>	"WSACleanup"				{ mkL IdVar }
+<0,ppSC>	"GetSystemTimeAsFileTime"		{ mkL IdVar }
+<0,ppSC>	"GetTickCount"				{ mkL IdVar }
+
+-- Winapi struct members.
+<0,ppSC>	"GatewayList"				{ mkL IdVar }
+<0,ppSC>	"Next"					{ mkL IdVar }
+<0,ppSC>	"IpAddress"				{ mkL IdVar }
+<0,ppSC>	"IpAddressList"				{ mkL IdVar }
+<0,ppSC>	"IpMask"				{ mkL IdVar }
+<0,ppSC>	"String"				{ mkL IdVar }
+
+-- Windows typedefs.
+<0,ppSC>	"DWORD"					{ mkL IdStdType }
+<0,ppSC>	"FILETIME"				{ mkL IdStdType }
+<0,ppSC>	"INT"					{ mkL IdStdType }
+<0,ppSC>	"LPSOCKADDR"				{ mkL IdStdType }
+<0,ppSC>	"IP_ADAPTER_INFO"			{ mkL IdStdType }
+<0,ppSC>	"LPTSTR"				{ mkL IdStdType }
+<0,ppSC>	"u_long"				{ mkL IdStdType }
+<0,ppSC>	"WSADATA"				{ mkL IdStdType }
+
+-- System struct types.
+<0,ppSC>	"addrinfo"				{ mkL IdSueType }
+<0,ppSC>	"ifconf"				{ mkL IdSueType }
+<0,ppSC>	"ifreq"					{ mkL IdSueType }
+<0,ppSC>	"epoll_event"				{ mkL IdSueType }
+<0,ppSC>	"in_addr"				{ mkL IdSueType }
+<0,ppSC>	"in6_addr"				{ mkL IdSueType }
+<0,ppSC>	"ipv6_mreq"				{ mkL IdSueType }
+<0,ppSC>	"sockaddr"				{ mkL IdSueType }
+<0,ppSC>	"sockaddr_in"				{ mkL IdSueType }
+<0,ppSC>	"sockaddr_in6"				{ mkL IdSueType }
+<0,ppSC>	"sockaddr_storage"			{ mkL IdSueType }
+<0,ppSC>	"timespec"				{ mkL IdSueType }
+<0,ppSC>	"timeval"				{ mkL IdSueType }
+
+-- Sodium constants.
+<0,ppSC>	"crypto_box_"[A-Z][A-Z0-9_]*		{ mkL IdConst }
+<0,ppSC>	"crypto_hash_sha256_"[A-Z][A-Z0-9_]*	{ mkL IdConst }
+<0,ppSC>	"crypto_hash_sha512_"[A-Z][A-Z0-9_]*	{ mkL IdConst }
+<0,ppSC>	"MAX"					{ mkL IdConst }
+<0,ppSC>	"MIN"					{ mkL IdConst }
+
+-- Standard C (ish).
+<ppSC>		defined					{ mkL PpDefined }
+<ppSC>		\n					{ mkL PpNewline `andBegin` 0 }
+<ppSC>		\\\n					;
+<ppSC>		$white					;
+
+<commentSC>	"*/"					{ start 0 }
+<commentSC>	[.\n]					;
+
+<dstringSC>	\"					{ start 0 }
+<dstringSC>	\\\\|\\[^"]|[^\\]|\n			;
+
+<sstringSC>	'					{ start 0 }
+<sstringSC>	\\\\|\\'|[^\\]|\n			;
+
+<ignoreSC>	"//!TOKSTYLE+"				{ start 0 }
+<ignoreSC>	[.\n]					;
+
+<0,ppSC>	"//"\n					;
+<0,ppSC>	"// ".*					;
+<0>		$white+					;
+<0>		"//!TOKSTYLE-"				{ start ignoreSC }
+<0>		"/*"					{ start commentSC }
+<0>		\"					{ mkL LitString `andBegin` dstringSC }
+<0>		'					{ mkL LitChar `andBegin` sstringSC }
+<0>		"<"[a-z0-9\.\/_]+">"			{ mkL LitSysInclude }
+<0>		"#if"					{ mkL PpIf `andBegin` ppSC }
+<0>		"#ifdef"				{ mkL PpIfdef }
+<0>		"#ifndef"				{ mkL PpIfndef }
+<0>		"#elif"					{ mkL PpElif `andBegin` ppSC }
+<0>		"#else"					{ mkL PpElse }
+<0>		"#endif"				{ mkL PpEndif }
+<0>		"#define"				{ mkL PpDefine `andBegin` ppSC }
+<0>		"#undef"				{ mkL PpUndef }
+<0>		"#include"				{ mkL PpInclude }
+<0>		"#error"				{ mkL PpError }
+<0,ppSC>	"break"					{ mkL KwBreak }
+<0,ppSC>	"case"					{ mkL KwCase }
+<0,ppSC>	"const"					{ mkL KwConst }
+<0,ppSC>	"continue"				{ mkL KwContinue }
+<0,ppSC>	"default"				{ mkL KwDefault }
+<0,ppSC>	"do"					{ mkL KwDo }
+<0,ppSC>	"else"					{ mkL KwElse }
+<0,ppSC>	"enum"					{ mkL KwEnum }
+<0,ppSC>	"extern"				{ mkL KwExtern }
+<0,ppSC>	"for"					{ mkL KwFor }
+<0,ppSC>	"goto"					{ mkL KwGoto }
+<0,ppSC>	"if"					{ mkL KwIf }
+<0,ppSC>	"return"				{ mkL KwReturn }
+<0,ppSC>	"sizeof"				{ mkL KwSizeof }
+<0,ppSC>	"static"				{ mkL KwStatic }
+<0,ppSC>	"struct"				{ mkL KwStruct }
+<0,ppSC>	"switch"				{ mkL KwSwitch }
+<0,ppSC>	"typedef"				{ mkL KwTypedef }
+<0,ppSC>	"union"					{ mkL KwUnion }
+<0,ppSC>	"void"					{ mkL KwVoid }
+<0,ppSC>	"while"					{ mkL KwWhile }
+<0,ppSC>	"bool"					{ mkL IdStdType }
+<0,ppSC>	"char"					{ mkL IdStdType }
+<0,ppSC>	"double"				{ mkL IdStdType }
+<0,ppSC>	"int"					{ mkL IdStdType }
+<0,ppSC>	"long int"				{ mkL IdStdType }
+<0,ppSC>	"long signed int"			{ mkL IdStdType }
+<0,ppSC>	"long"					{ mkL IdStdType }
+<0,ppSC>	"signed int"				{ mkL IdStdType }
+<0,ppSC>	"unsigned int"				{ mkL IdStdType }
+<0,ppSC>	"unsigned long"				{ mkL IdStdType }
+<0,ppSC>	"unsigned"				{ mkL IdStdType }
+<0,ppSC>	"va_list"				{ mkL IdStdType }
+<0,ppSC>	"__func__"				{ mkL IdVar }
+<0,ppSC>	"__FILE__"				{ mkL IdConst }
+<0,ppSC>	"__LINE__"				{ mkL IdConst }
+<0,ppSC>	"__cplusplus"				{ mkL IdConst }
+<0,ppSC>	"__FreeBSD__"				{ mkL IdConst }
+<0,ppSC>	"__linux__"				{ mkL IdConst }
+<0,ppSC>	"__sun"					{ mkL IdConst }
+<0,ppSC>	"true"					{ mkL LitInteger }
+<0,ppSC>	"false"					{ mkL LitInteger }
+<0,ppSC>	[A-Z][A-Z0-9_]{1,2}			{ mkL IdSueType }
+<0,ppSC>	_*[A-Z][A-Z0-9_]*			{ mkL IdConst }
+<0,ppSC>	[A-Z][A-Za-z0-9_]*[a-z][A-Za-z0-9_]*	{ mkL IdSueType }
+<0,ppSC>	[a-z][a-z0-9_]*_t			{ mkL IdStdType }
+<0,ppSC>	[a-z][a-z0-9_]*_cb			{ mkL IdFuncType }
+<0,ppSC>	[a-z][A-Za-z0-9_]*			{ mkL IdVar }
+<0,ppSC>	[0-9]+[LU]*				{ mkL LitInteger }
+<0,ppSC>	[0-9]+"."[0-9]+				{ mkL LitInteger }
+<0,ppSC>	0x[0-9a-fA-F]+[LU]*			{ mkL LitInteger }
+<0,ppSC>	"="					{ mkL PctEq }
+<0,ppSC>	"=="					{ mkL PctEqEq }
+<0,ppSC>	"&"					{ mkL PctAmpersand }
+<0,ppSC>	"&&"					{ mkL PctAmpersandAmpersand }
+<0,ppSC>	"&="					{ mkL PctAmpersandEq }
+<0,ppSC>	"->"					{ mkL PctArrow }
+<0,ppSC>	","					{ mkL PctComma }
+<0,ppSC>	"+"					{ mkL PctPlus }
+<0,ppSC>	"++"					{ mkL PctPlusPlus }
+<0,ppSC>	"+="					{ mkL PctPlusEq }
+<0,ppSC>	"-"					{ mkL PctMinus }
+<0,ppSC>	"--"					{ mkL PctMinusMinus }
+<0,ppSC>	"-="					{ mkL PctMinusEq }
+<0,ppSC>	"~"					{ mkL PctTilde }
+<0,ppSC>	"/"					{ mkL PctSlash }
+<0,ppSC>	"/="					{ mkL PctSlashEq }
+<0,ppSC>	"."					{ mkL PctPeriod }
+<0,ppSC>	"..."					{ mkL PctEllipsis }
+<0,ppSC>	"%"					{ mkL PctPercent }
+<0,ppSC>	"%="					{ mkL PctPercentEq }
+<0,ppSC>	";"					{ mkL PctSemicolon }
+<0,ppSC>	":"					{ mkL PctColon }
+<0,ppSC>	"<"					{ mkL PctLess }
+<0,ppSC>	"<<"					{ mkL PctLessLess }
+<0,ppSC>	"<<="					{ mkL PctLessLessEq }
+<0,ppSC>	"<="					{ mkL PctLessEq }
+<0,ppSC>	">"					{ mkL PctGreater }
+<0,ppSC>	">>"					{ mkL PctGreaterGreater }
+<0,ppSC>	">>="					{ mkL PctGreaterGreaterEq }
+<0,ppSC>	">="					{ mkL PctGreaterEq }
+<0,ppSC>	"|"					{ mkL PctPipe }
+<0,ppSC>	"||"					{ mkL PctPipePipe }
+<0,ppSC>	"|="					{ mkL PctPipeEq }
+<0,ppSC>	"["					{ mkL PctLBrack }
+<0,ppSC>	"]"					{ mkL PctRBrack }
+<0,ppSC>	"{"					{ mkL PctLBrace }
+<0,ppSC>	"}"					{ mkL PctRBrace }
+<0,ppSC>	"("					{ mkL PctLParen }
+<0,ppSC>	")"					{ mkL PctRParen }
+<0,ppSC>	"?"					{ mkL PctQMark }
+<0,ppSC>	"!"					{ mkL PctEMark }
+<0,ppSC>	"!="					{ mkL PctEMarkEq }
+<0,ppSC>	"*"					{ mkL PctAsterisk }
+<0,ppSC>	"*="					{ mkL PctAsteriskEq }
+<0,ppSC>	"^"					{ mkL PctCaret }
+<0,ppSC>	"^="					{ mkL PctCaretEq }
+<0,ppSC>	.					{ mkL Error }
+
+{
+data LexemeClass
+    = Comment
+    | IdConst
+    | IdFuncType
+    | IdStdType
+    | IdSueType
+    | IdVar
+    | KwBreak
+    | KwCase
+    | KwConst
+    | KwContinue
+    | KwDefault
+    | KwDo
+    | KwFor
+    | KwGoto
+    | KwIf
+    | KwElse
+    | KwEnum
+    | KwExtern
+    | KwReturn
+    | KwSizeof
+    | KwStatic
+    | KwStruct
+    | KwSwitch
+    | KwTypedef
+    | KwUnion
+    | KwVla
+    | KwVoid
+    | KwWhile
+    | LitChar
+    | LitInteger
+    | LitString
+    | LitSysInclude
+    | PctAmpersand
+    | PctAmpersandAmpersand
+    | PctAmpersandEq
+    | PctArrow
+    | PctAsterisk
+    | PctAsteriskEq
+    | PctCaret
+    | PctCaretEq
+    | PctColon
+    | PctComma
+    | PctEllipsis
+    | PctEMark
+    | PctEMarkEq
+    | PctEq
+    | PctEqEq
+    | PctGreater
+    | PctGreaterEq
+    | PctGreaterGreater
+    | PctGreaterGreaterEq
+    | PctLBrace
+    | PctLBrack
+    | PctLess
+    | PctLessEq
+    | PctLessLess
+    | PctLessLessEq
+    | PctLParen
+    | PctMinus
+    | PctMinusEq
+    | PctMinusMinus
+    | PctPeriod
+    | PctPercent
+    | PctPercentEq
+    | PctPipe
+    | PctPipeEq
+    | PctPipePipe
+    | PctPlus
+    | PctPlusEq
+    | PctPlusPlus
+    | PctQMark
+    | PctRBrace
+    | PctRBrack
+    | PctRParen
+    | PctSemicolon
+    | PctSlash
+    | PctSlashEq
+    | PctTilde
+    | PpDefine
+    | PpDefined
+    | PpElif
+    | PpElse
+    | PpEndif
+    | PpError
+    | PpIf
+    | PpIfdef
+    | PpIfndef
+    | PpInclude
+    | PpNewline
+    | PpUndef
+
+    | Error
+    | Eof
+    deriving (Show, Eq)
+
+data Lexeme = L AlexPosn LexemeClass String
+    deriving (Show)
+
+mkL :: LexemeClass -> AlexInput -> Int -> Alex Lexeme
+mkL c (p, _, _, str) len = return (L p c (take len str))
+
+start :: Int -> AlexInput -> Int -> Alex Lexeme
+start code _ _ = do
+    alexSetStartCode code
+    alexMonadScan
+
+alexEOF :: Alex Lexeme
+alexEOF = return (L (AlexPn 0 0 0) Eof "")
+
+alexScanTokens :: String -> Either String [Lexeme]
+alexScanTokens str =
+    runAlex str $ loop []
+  where
+    loop toks = do
+        tok@(L _ cl _) <- alexMonadScan
+        if cl == Eof
+            then return $ reverse toks
+            else loop $! (tok:toks)
+
+}
diff --git a/src/Tokstyle/Cimple/Parser.y b/src/Tokstyle/Cimple/Parser.y
new file mode 100644
--- /dev/null
+++ b/src/Tokstyle/Cimple/Parser.y
@@ -0,0 +1,528 @@
+{
+module Tokstyle.Cimple.Parser where
+
+import           Tokstyle.Cimple.Lexer (Alex, Lexeme (..), LexemeClass (..),
+                                        alexMonadScan)
+}
+
+-- Conflict between (static) FunctionDecl and (static) ConstDecl.
+%expect 2
+
+%name parseCimple
+%error {parseError}
+%lexer {lexwrap} {L undefined Eof ""}
+%monad {Alex}
+%tokentype {Lexeme}
+%token
+    ID_CONST			{ L _ IdConst			_ }
+    ID_FUNC_TYPE		{ L _ IdFuncType		_ }
+    ID_STD_TYPE			{ L _ IdStdType			_ }
+    ID_SUE_TYPE			{ L _ IdSueType			_ }
+    ID_VAR			{ L _ IdVar			_ }
+    break			{ L _ KwBreak			_ }
+    case			{ L _ KwCase			_ }
+    const			{ L _ KwConst			_ }
+    continue			{ L _ KwContinue		_ }
+    default			{ L _ KwDefault			_ }
+    do				{ L _ KwDo			_ }
+    else			{ L _ KwElse			_ }
+    enum			{ L _ KwEnum			_ }
+    extern			{ L _ KwExtern			_ }
+    for				{ L _ KwFor			_ }
+    goto			{ L _ KwGoto			_ }
+    if				{ L _ KwIf			_ }
+    return			{ L _ KwReturn			_ }
+    sizeof			{ L _ KwSizeof			_ }
+    static			{ L _ KwStatic			_ }
+    struct			{ L _ KwStruct			_ }
+    switch			{ L _ KwSwitch			_ }
+    typedef			{ L _ KwTypedef			_ }
+    union			{ L _ KwUnion			_ }
+    VLA				{ L _ KwVla			_ }
+    void			{ L _ KwVoid			_ }
+    while			{ L _ KwWhile			_ }
+    LIT_CHAR			{ L _ LitChar			_ }
+    LIT_INTEGER			{ L _ LitInteger		_ }
+    LIT_STRING			{ L _ LitString			_ }
+    LIT_SYS_INCLUDE		{ L _ LitSysInclude		_ }
+    '&'				{ L _ PctAmpersand		_ }
+    '&&'			{ L _ PctAmpersandAmpersand	_ }
+    '&='			{ L _ PctAmpersandEq		_ }
+    '->'			{ L _ PctArrow			_ }
+    '*'				{ L _ PctAsterisk		_ }
+    '*='			{ L _ PctAsteriskEq		_ }
+    '^'				{ L _ PctCaret			_ }
+    '^='			{ L _ PctCaretEq		_ }
+    ':'				{ L _ PctColon			_ }
+    ','				{ L _ PctComma			_ }
+    '!'				{ L _ PctEMark			_ }
+    '!='			{ L _ PctEMarkEq		_ }
+    '='				{ L _ PctEq			_ }
+    '=='			{ L _ PctEqEq			_ }
+    '>'				{ L _ PctGreater		_ }
+    '>='			{ L _ PctGreaterEq		_ }
+    '>>'			{ L _ PctGreaterGreater		_ }
+    '>>='			{ L _ PctGreaterGreaterEq	_ }
+    '{'				{ L _ PctLBrace			_ }
+    '['				{ L _ PctLBrack			_ }
+    '<'				{ L _ PctLess			_ }
+    '<='			{ L _ PctLessEq			_ }
+    '<<'			{ L _ PctLessLess		_ }
+    '<<='			{ L _ PctLessLessEq		_ }
+    '('				{ L _ PctLParen			_ }
+    '-'				{ L _ PctMinus			_ }
+    '-='			{ L _ PctMinusEq		_ }
+    '--'			{ L _ PctMinusMinus		_ }
+    '%'				{ L _ PctPercent		_ }
+    '%='			{ L _ PctPercentEq		_ }
+    '.'				{ L _ PctPeriod			_ }
+    '...'			{ L _ PctEllipsis		_ }
+    '|'				{ L _ PctPipe			_ }
+    '|='			{ L _ PctPipeEq			_ }
+    '||'			{ L _ PctPipePipe		_ }
+    '+'				{ L _ PctPlus			_ }
+    '+='			{ L _ PctPlusEq			_ }
+    '++'			{ L _ PctPlusPlus		_ }
+    '?'				{ L _ PctQMark			_ }
+    '}'				{ L _ PctRBrace			_ }
+    ']'				{ L _ PctRBrack			_ }
+    ')'				{ L _ PctRParen			_ }
+    ';'				{ L _ PctSemicolon		_ }
+    '/'				{ L _ PctSlash			_ }
+    '/='			{ L _ PctSlashEq		_ }
+    '~'				{ L _ PctTilde			_ }
+    'defined'			{ L _ PpDefined			_ }
+    '#define'			{ L _ PpDefine			_ }
+    '#elif'			{ L _ PpElif			_ }
+    '#else'			{ L _ PpElse			_ }
+    '#endif'			{ L _ PpEndif			_ }
+    '#error'			{ L _ PpError			_ }
+    '#if'			{ L _ PpIf			_ }
+    '#ifdef'			{ L _ PpIfdef			_ }
+    '#ifndef'			{ L _ PpIfndef			_ }
+    '#include'			{ L _ PpInclude			_ }
+    '#undef'			{ L _ PpUndef			_ }
+    '\n'			{ L _ PpNewline			_ }
+
+%left ','
+%right '=' '+=' '-=' '*=' '/=' '%=' '<<=' '>>=' '&=' '^=' '|='
+%right '?' ':'
+%left '||'
+%left '&&'
+%left '|'
+%left '^'
+%left '&'
+%left '!=' '=='
+%left '<' '<=' '>' '>='
+%left '<<' '>>'
+%left '+' '-'
+%left '*' '/' '%'
+%right CAST ADDRESS NEG DEREF sizeof '!' '~' '++' '--'
+%left '->' '.' '(' '['
+
+%%
+
+TranslationUnit :: { [()] }
+TranslationUnit
+:	ToplevelDecls							{ $1 }
+
+ToplevelDecls :: { [()] }
+ToplevelDecls
+:	ToplevelDecl							{ [$1] }
+|	ToplevelDecls ToplevelDecl					{ $2 : $1 }
+
+ToplevelDecl :: { () }
+ToplevelDecl
+:	PreprocIfdef(ToplevelDecls)					{ $1 }
+|	PreprocIf(ToplevelDecls)					{ $1 }
+|	PreprocInclude							{ $1 }
+|	PreprocDefine							{ $1 }
+|	PreprocUndef							{ $1 }
+|	PreprocError							{ $1 }
+|	ExternC								{ $1 }
+|	TypedefDecl							{ $1 }
+|	AggregateDecl							{ $1 }
+|	EnumDecl							{ $1 }
+|	FunctionDecl							{ $1 }
+|	ConstDecl							{ $1 }
+
+PreprocIfdef(decls)
+:	'#ifdef' ID_CONST decls PreprocElse(decls) '#endif'		{ () }
+|	'#ifndef' ID_CONST decls PreprocElse(decls) '#endif'		{ () }
+
+PreprocIf(decls)
+:	'#if' ConstExpr '\n' decls PreprocElse(decls) '#endif'		{ () }
+
+PreprocElse(decls)
+:									{ () }
+|	'#else' decls							{ () }
+|	'#elif' ConstExpr '\n' decls PreprocElse(decls)			{ () }
+
+PreprocError :: { () }
+PreprocError
+:	'#error' LIT_STRING						{ () }
+
+PreprocInclude :: { () }
+PreprocInclude
+:	'#include' LIT_STRING						{ () }
+|	'#include' LIT_SYS_INCLUDE					{ () }
+
+PreprocDefine :: { () }
+PreprocDefine
+:	'#define' ID_CONST ConstExpr '\n'				{ () }
+|	'#define' ID_CONST '\n'						{ () }
+|	'#define' ID_CONST MacroParamList MacroBody '\n'		{ () }
+
+PreprocUndef :: { () }
+PreprocUndef
+:	'#undef' ID_CONST						{ () }
+
+ConstExpr :: { () }
+ConstExpr
+:	LiteralExpr							{ () }
+|	'defined' '(' ID_CONST ')'					{ () }
+|	PureExpr(ConstExpr)						{ () }
+
+MacroParamList :: { () }
+MacroParamList
+:	'(' ')'								{ () }
+|	'(' MacroParams ')'						{ () }
+|	'(' MacroParams ',' '...' ')'					{ () }
+
+MacroParams :: { [()] }
+MacroParams
+:	MacroParam							{ [$1] }
+|	MacroParams ',' MacroParam					{ $3 : $1 }
+
+MacroParam :: { () }
+MacroParam
+:	ID_VAR								{ () }
+
+MacroBody :: { () }
+MacroBody
+:	do CompoundStmt while '(' LIT_INTEGER ')'			{ () }
+|	FunctionCall							{ () }
+
+ExternC :: { () }
+ExternC
+:	'#ifdef' ID_CONST
+	extern LIT_STRING '{'
+	'#endif'
+	ToplevelDecls
+	'#ifdef' ID_CONST
+	'}'
+	'#endif'							{ () }
+
+Stmts :: { [()] }
+Stmts
+:	Stmt								{ [$1] }
+|	Stmts Stmt							{ $2 : $1 }
+
+Stmt :: { () }
+Stmt
+:	PreprocIfdef(Stmts)						{ () }
+|	PreprocIf(Stmts)						{ () }
+|	PreprocDefine Stmts PreprocUndef				{ () }
+|	LabelStmt							{ () }
+|	DeclStmt							{ () }
+|	CompoundStmt							{ () }
+|	IfStmt								{ () }
+|	ForStmt								{ () }
+|	WhileStmt							{ () }
+|	DoWhileStmt							{ () }
+|	AssignExpr ';'							{ () }
+|	ExprStmt ';'							{ () }
+|	FunctionCall ';'						{ () }
+|	break ';'							{ () }
+|	goto ID_CONST ';'						{ () }
+|	continue ';'							{ () }
+|	return ';'							{ () }
+|	return Expr ';'							{ () }
+|	switch '(' Expr ')' CompoundStmt				{ () }
+
+IfStmt :: { () }
+IfStmt
+:	if '(' Expr ')' CompoundStmt					{ () }
+|	if '(' Expr ')' CompoundStmt else IfStmt			{ () }
+|	if '(' Expr ')' CompoundStmt else CompoundStmt			{ () }
+
+ForStmt :: { () }
+ForStmt
+:	for '(' ForInit Opt(Expr) ';' Opt(ForNext) ')' CompoundStmt	{ () }
+
+ForInit :: { () }
+ForInit
+:	';'								{ () }
+|	AssignExpr ';'							{ () }
+|	SingleVarDecl							{ () }
+
+ForNext :: { () }
+ForNext
+:	ExprStmt							{ () }
+|	AssignExpr							{ () }
+
+Opt(x)
+:									{ () }
+|	x								{ () }
+
+WhileStmt :: { () }
+WhileStmt
+:	while '(' Expr ')' CompoundStmt					{ () }
+
+DoWhileStmt :: { () }
+DoWhileStmt
+:	do CompoundStmt while '(' Expr ')' ';'				{ () }
+
+LabelStmt :: { () }
+LabelStmt
+:	case Expr ':' Stmt						{ () }
+|	default ':' Stmt						{ () }
+|	ID_CONST ':' Stmt						{ () }
+
+DeclStmt :: { () }
+DeclStmt
+:	VarDecl								{ () }
+|	VLA '(' Type ',' ID_VAR ',' Expr ')' ';'			{ () }
+
+SingleVarDecl :: { () }
+SingleVarDecl
+:	QualType Declarator ';'						{ () }
+
+VarDecl :: { () }
+VarDecl
+:	QualType Declarators ';'					{ () }
+
+Declarators :: { [()] }
+Declarators
+:	Declarator							{ [$1] }
+|	Declarators ',' Declarator					{ $3 : $1 }
+
+Declarator :: { () }
+Declarator
+:	DeclSpec(Expr) '=' InitialiserExpr				{ () }
+|	DeclSpec(Expr)							{ () }
+
+InitialiserExpr :: { () }
+InitialiserExpr
+:	InitialiserList							{ () }
+|	Expr								{ () }
+
+DeclSpec(expr)
+:	ID_VAR								{ () }
+|	DeclSpec(expr) '[' ']'						{ () }
+|	DeclSpec(expr) '[' expr ']'					{ () }
+
+InitialiserList :: { () }
+InitialiserList
+:	'{' Initialisers '}'						{ () }
+|	'{' Initialisers ',' '}'					{ () }
+
+Initialisers :: { [()] }
+Initialisers
+:	Initialiser							{ [$1] }
+|	Initialisers ',' Initialiser					{ $3 : $1 }
+
+Initialiser :: { () }
+Initialiser
+:	Expr								{ () }
+|	InitialiserList							{ () }
+
+CompoundStmt :: { () }
+CompoundStmt
+:	'{' Stmts '}'							{ () }
+
+PureExpr(x)
+:	x '!=' x							{ () }
+|	x '==' x							{ () }
+|	x '||' x							{ () }
+|	x '^' x								{ () }
+|	x '|' x								{ () }
+|	x '&&' x							{ () }
+|	x '&' x								{ () }
+|	x '/' x								{ () }
+|	x '*' x								{ () }
+|	x '%' x								{ () }
+|	x '+' x								{ () }
+|	x '-' x								{ () }
+|	x '<' x								{ () }
+|	x '<=' x							{ () }
+|	x '<<' x							{ () }
+|	x '>' x								{ () }
+|	x '>=' x							{ () }
+|	x '>>' x							{ () }
+|	x '?' x ':' x							{ () }
+|	'(' x ')'							{ () }
+|	'!' x								{ () }
+|	'~' x								{ () }
+|	'-' x %prec NEG							{ () }
+|	'&' x %prec ADDRESS						{ () }
+|	'(' QualType ')' x %prec CAST					{ () }
+|	sizeof '(' x ')'						{ () }
+|	sizeof '(' Type ')'						{ () }
+
+LiteralExpr :: { () }
+LiteralExpr
+:	LIT_CHAR							{ () }
+|	LIT_INTEGER							{ () }
+|	LIT_STRING							{ () }
+|	ID_CONST							{ () }
+
+Expr :: { () }
+Expr
+:	LhsExpr								{ () }
+|	ExprStmt							{ () }
+|	LiteralExpr							{ () }
+|	FunctionCall							{ () }
+|	PureExpr(Expr)							{ () }
+
+AssignExpr :: { () }
+AssignExpr
+:	LhsExpr AssignOperator Expr					{ () }
+
+AssignOperator :: { () }
+AssignOperator
+:	'='								{ () }
+|	'*='								{ () }
+|	'/='								{ () }
+|	'+='								{ () }
+|	'-='								{ () }
+|	'&='								{ () }
+|	'|='								{ () }
+|	'^='								{ () }
+|	'%='								{ () }
+|	'<<='								{ () }
+|	'>>='								{ () }
+
+ExprStmt :: { () }
+ExprStmt
+:	'++' Expr							{ () }
+|	'--' Expr							{ () }
+
+LhsExpr :: { () }
+LhsExpr
+:	ID_VAR								{ () }
+|	'*' LhsExpr %prec DEREF						{ () }
+-- TODO(iphydf): We don't want this, it's most likely a bug:
+|	'*' '(' QualType ')' LhsExpr %prec DEREF			{ () }
+|	LhsExpr '.' ID_VAR						{ () }
+|	LhsExpr '->' ID_VAR						{ () }
+|	LhsExpr '[' Expr ']'						{ () }
+
+FunctionCall :: { () }
+FunctionCall
+:	Expr ArgList							{ () }
+
+ArgList :: { () }
+ArgList
+:	'(' ')'								{ () }
+|	'(' Args ')'							{ () }
+
+Args :: { [()] }
+Args
+:	Expr								{ [$1] }
+|	Args ',' Expr							{ $3 : $1 }
+
+EnumDecl :: { () }
+EnumDecl
+:	typedef enum ID_SUE_TYPE EnumeratorList ID_SUE_TYPE ';'		{ () }
+
+EnumeratorList :: { () }
+EnumeratorList
+:	'{' Enumerators '}'						{ () }
+|	'{' Enumerators ',' '}'						{ () }
+
+Enumerators :: { [()] }
+Enumerators
+:	Enumerator							{ [$1] }
+|	Enumerators ',' Enumerator					{ $3 : $1 }
+
+Enumerator :: { () }
+Enumerator
+:	ID_CONST							{ () }
+|	ID_CONST '=' ConstExpr						{ () }
+
+AggregateDecl :: { () }
+AggregateDecl
+:	AggregateType ';'						{ () }
+|	typedef AggregateType ID_SUE_TYPE ';'				{ () }
+
+AggregateType :: { () }
+AggregateType
+:	struct ID_SUE_TYPE '{' MemberDecls '}'				{ () }
+|	union ID_SUE_TYPE '{' MemberDecls '}'				{ () }
+
+MemberDecls :: { [()] }
+MemberDecls
+:	MemberDecl							{ [$1] }
+|	MemberDecls MemberDecl						{ $2 : $1 }
+
+MemberDecl :: { () }
+MemberDecl
+:	QualType DeclSpec(ConstExpr) ';'				{ () }
+|	PreprocIfdef(MemberDecls)					{ () }
+
+TypedefDecl :: { () }
+TypedefDecl
+:	typedef QualType ID_SUE_TYPE ';'				{ () }
+|	typedef FunctionPrototype(ID_FUNC_TYPE) ';'			{ () }
+
+QualType :: { () }
+QualType
+:	Type								{ () }
+|	const Type							{ () }
+
+Type :: { () }
+Type
+:	LeafType							{ () }
+|	Type '*'							{ () }
+|	Type const							{ () }
+
+LeafType :: { () }
+LeafType
+:	struct ID_SUE_TYPE						{ () }
+|	void								{ () }
+|	ID_FUNC_TYPE							{ () }
+|	ID_STD_TYPE							{ () }
+|	ID_SUE_TYPE							{ () }
+
+FunctionDecl :: { () }
+FunctionDecl
+:	FunctionPrototype(ID_VAR) FunctionBody				{ () }
+|	static FunctionPrototype(ID_VAR) FunctionBody			{ () }
+
+FunctionPrototype(id)
+:	QualType id FunctionParamList					{ () }
+
+FunctionBody :: { () }
+FunctionBody
+:	';'								{ () }
+|	CompoundStmt							{ () }
+
+FunctionParamList :: { () }
+FunctionParamList
+:	'(' void ')'							{ () }
+|	'(' FunctionParams ')'						{ () }
+|	'(' FunctionParams ',' '...' ')'				{ () }
+
+FunctionParams :: { [()] }
+FunctionParams
+:	FunctionParam							{ [$1] }
+|	FunctionParams ',' FunctionParam				{ $3 : $1 }
+
+FunctionParam :: { () }
+FunctionParam
+:	QualType DeclSpec(ConstExpr)					{ () }
+
+ConstDecl :: { () }
+ConstDecl
+:	extern const LeafType ID_VAR ';'				{ () }
+|	const LeafType ID_VAR '=' InitialiserExpr ';'			{ () }
+|	static const LeafType ID_VAR '=' InitialiserExpr ';'		{ () }
+
+{
+parseError :: Lexeme -> Alex a
+parseError = fail . show
+
+lexwrap :: (Lexeme -> Alex a) -> Alex a
+lexwrap = (alexMonadScan >>=)
+}
diff --git a/src/Tokstyle/Result.hs b/src/Tokstyle/Result.hs
new file mode 100644
--- /dev/null
+++ b/src/Tokstyle/Result.hs
@@ -0,0 +1,31 @@
+{-# LANGUAGE DeriveFunctor #-}
+{-# LANGUAGE DeriveGeneric #-}
+{-# LANGUAGE Safe          #-}
+module Tokstyle.Result where
+
+import           Control.Applicative (Applicative (..))
+import           Control.DeepSeq     (NFData)
+import           GHC.Generics        (Generic)
+
+
+data Result a
+  = Success a
+  | Failure String
+  deriving (Read, Show, Eq, Functor, Generic)
+
+instance NFData a => NFData (Result a)
+
+
+instance Applicative Result where
+  pure = Success
+
+  Success f   <*> x = fmap f x
+  Failure msg <*> _ = Failure msg
+
+
+instance Monad Result where
+  return = pure
+  fail = Failure
+
+  Success x   >>= f = f x
+  Failure msg >>= _ = Failure msg
diff --git a/src/Tokstyle/Sources.hs b/src/Tokstyle/Sources.hs
new file mode 100644
--- /dev/null
+++ b/src/Tokstyle/Sources.hs
@@ -0,0 +1,58 @@
+module Tokstyle.Sources (sources) where
+
+sources :: [String]
+sources = map ("../c-toxcore/" ++)
+    [ "toxav/audio.c"
+    {-, "toxav/audio.h"-}
+    {-, "toxav/bwcontroller.c"-}
+    {-, "toxav/bwcontroller.h"-}
+    {-, "toxav/groupav.c"-}
+    {-, "toxav/msi.c"-}
+    {-, "toxav/rtp.c"-}
+    {-, "toxav/toxav.c"-}
+    {-, "toxav/toxav_old.c"-}
+    {-, "toxav/video.c"-}
+    , "toxcore/DHT.c"
+    , "toxcore/DHT.h"
+    , "toxcore/LAN_discovery.c"
+    , "toxcore/LAN_discovery.h"
+    , "toxcore/Messenger.c"
+    , "toxcore/Messenger.h"
+    , "toxcore/TCP_client.c"
+    , "toxcore/TCP_client.h"
+    , "toxcore/TCP_connection.c"
+    , "toxcore/TCP_connection.h"
+    , "toxcore/TCP_server.c"
+    , "toxcore/TCP_server.h"
+    , "toxcore/crypto_core.c"
+    , "toxcore/crypto_core.h"
+    , "toxcore/friend_connection.c"
+    , "toxcore/friend_connection.h"
+    , "toxcore/friend_requests.c"
+    , "toxcore/friend_requests.h"
+    , "toxcore/group.c"
+    , "toxcore/group.h"
+    , "toxcore/list.c"
+    , "toxcore/list.h"
+    , "toxcore/logger.c"
+    , "toxcore/logger.h"
+    , "toxcore/mono_time.c"
+    , "toxcore/mono_time.h"
+    , "toxcore/net_crypto.c"
+    , "toxcore/network.c"
+    , "toxcore/network.h"
+    , "toxcore/onion.c"
+    , "toxcore/onion.h"
+    , "toxcore/onion_announce.c"
+    , "toxcore/onion_announce.h"
+    , "toxcore/onion_client.c"
+    , "toxcore/onion_client.h"
+    , "toxcore/ping.c"
+    , "toxcore/ping.h"
+    , "toxcore/ping_array.c"
+    {-, "toxcore/ping_array.h"-}
+    , "toxcore/tox.c"
+    {-, "toxcore/tox.h"-}
+    , "toxcore/util.c"
+    , "toxcore/util.h"
+    ]
diff --git a/tokstyle.cabal b/tokstyle.cabal
new file mode 100644
--- /dev/null
+++ b/tokstyle.cabal
@@ -0,0 +1,59 @@
+name:                tokstyle
+version:             0.0.1
+synopsis:            TokTok C code style checker
+description:         TokTok C code style checker
+homepage:            https://toktok.github.io/tokstyle
+license:             GPL-3
+license-file:        LICENSE.md
+author:              iphydf
+maintainer:          iphydf@users.noreply.github.com
+category:            Development
+build-type:          Simple
+cabal-version:       >=1.10
+
+source-repository head
+  type: git
+  location: https://github.com/TokTok/tokstyle
+
+library
+  default-language:    Haskell2010
+  exposed-modules:
+      Tokstyle.C
+    , Tokstyle.Cimple
+    , Tokstyle.Sources
+  other-modules:
+      Tokstyle.C.Naming
+    , Tokstyle.Cimple.Lexer
+    , Tokstyle.Cimple.Parser
+    , Tokstyle.Result
+  ghc-options:
+      -Wall
+  build-depends:
+      base >= 4 && < 5
+    , array
+    , deepseq
+    , filepath
+    , language-c
+  hs-source-dirs:      src
+
+executable check-c
+  default-language: Haskell2010
+  hs-source-dirs:
+      tools
+  ghc-options:
+      -Wall
+  build-depends:
+      base < 5
+    , tokstyle
+  main-is: check-c.hs
+
+executable check-cimple
+  default-language: Haskell2010
+  hs-source-dirs:
+      tools
+  ghc-options:
+      -Wall
+  build-depends:
+      base < 5
+    , tokstyle
+  main-is: check-cimple.hs
diff --git a/tools/check-c.hs b/tools/check-c.hs
new file mode 100644
--- /dev/null
+++ b/tools/check-c.hs
@@ -0,0 +1,7 @@
+module Main (main) where
+
+import qualified Tokstyle.C
+import           Tokstyle.Sources (sources)
+
+main :: IO ()
+main = Tokstyle.C.main sources
diff --git a/tools/check-cimple.hs b/tools/check-cimple.hs
new file mode 100644
--- /dev/null
+++ b/tools/check-cimple.hs
@@ -0,0 +1,7 @@
+module Main (main) where
+
+import qualified Tokstyle.Cimple
+import           Tokstyle.Sources (sources)
+
+main :: IO ()
+main = Tokstyle.Cimple.main sources
