Do Parsers dream of Electric Guitars?
summary
Builds an Elm program that reads a guitar chord sheet and actually parses tokens like [Am-7] into a Chord record with Note and Quality types instead of relying on a giant regex. Uses elm/parser, runs P.run on a chord parser, composes note and quality parsers, uses lookahead with chomp/jumpIf and accumulator looping with P.loop, then generates guitar fretboard voicings live from the parsed data. Repo is alpha on packages and the demo works.
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chapters (9)
- 0:00Introduction and setup
- 1:07Goal of parsing guitar chords
- 4:02Parsing with regular expressions
- 8:00Introducing Elm parser
- 10:35Building note and quality parsers
- 14:18Parsing the full sheet music
- 21:50Advantages of parser over regex
- 22:33Live demo and future work
- 23:15Q&A and closing
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