In this tool-assisted education video I create a parser in C++ for a B-like programming language using GNU Bison. For the lexicographical analysis, a lexer is generated using re2c.

This is part of a multi-episode series. In the next video, we will focus on optimization.

Become a member: https://youtube.com/Bisqwit/join

Downloads:
— https://github.com/bisqwit/compiler_series/tree/master/ep1 All the material associated with this episode can be downloaded here.

Acknowledgements:
— Picture: Processors :: Jason Rogers
— Music¹: Aryol :: The Strategy Continues :: Kyohei Sada (converted into MIDI and played through OPL3 emulation through homebrew software)
— Music²: Star Ocean :: Past Days :: Motoi Sakuraba (SPC-OPL3 conversion)
— Music³: Rockman & Forte :: Museum :: Kirikiri-Chan and others (SPC-OPL3 conversion)
— Music⁴: Famicom Tantei Club Part II: Ushiro ni Tatsu Shōjo :: Dean’s Room :: Kenji Yamamoto (SPC-OPL3 conversion), original composition: Bach's Invention № 15
— Music⁵: Aryol :: Arrest :: Kyohei Sada…

The recent rash of fires in high-rise hotels and deaths occasioned thereby has given rise to the need for a breathing device and method for supplying a hotel guest and/or fireman with fresh air until he can be rescued. The device and method of this invention provide for the insertion of a breathing tube through the water trap of a toilet to expose an open end thereof to fresh air from a vent pipe connected to a sewer line of the toilet, to enable the user to breathe fresh air through the tube.

Why Pakistan should be on every solo female traveler's bucket list https://t.co/xBg9BHARrP