Yet Another Musical Esolang
Yet Another Musical Esolang (abbreviated as YAME) is an esoteric programming language that takes music notes as input.
Syntax
Yet Another Musical Esolang uses musical notes and rhythms to represent functions. It behaves as if it has an instruction tape, like brainfuck, and has a pointer that can move and be used to change the values of the instruction tape. At the start, the pointer is at position zero, and all cells are set to zero. The instruction tape is the same as the data tape in brainfuck, but extends to both positive infinity and negative infinity.
Notes and rhythms
Yet Another Musical Esolang uses 13 notes, from E-flat to E-flat an octave above, and 5 rhythms: sixteenth note, eighth note, quarter note, dotted quarter note, and acciaccatura.
| E-flat | E | G | A-flat | B-flat | B | D | E-flat | |
|---|---|---|---|---|---|---|---|---|
| Sixteenth note | accept input of # bytes from user in numerical form, store at position # | accept input of # bytes from user in ascii form, store at position # | output ascii digit corresponding to number under pointer | NOP | add # to number under pointer | move pointer left # cells | NOP | begin loop that will be repeated # times |
| Eighth note | move pointer to position # | NOP | output number under pointer | NOP | subtract # from number under pointer | move pointer right # cells | set the number at position # to the current position of the pointer | NOP |
| Quarter note | NOP | begin loop that runs while the number at position # is greater than # | begin loop that runs while the number at position # is less than # | begin loop that runs while the number at position # is less than or equal to # | multiply # by number under pointer | NOP | NOP | NOP |
| Dotted Quarter note | end program | begin loop that runs while the number at position # is equal to # | begin loop that runs while the number at position # is unequal to # | begin loop that runs while the number at position # is greater than or equal to # | divide # by number under pointer | NOP | set value under pointer to # | end loop |
Functions in bold require two numerical arguments, and functions in italics require one. Yet Another Musical Esolang uses an octal system to represent numbers.
| E-flat | E | G | A-flat | B-flat | B | D | E-flat |
|---|---|---|---|---|---|---|---|
| 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 |
These sequences of notes are compressed into the space of one eighth note, usually using tuples, and placed directly after the function that requires them.
Acciaccaturas
An A acciaccatura is required before the first function, and represents the start of the program.
An F acciaccatura before the note represents that the first numerical argument for the function represented by the note actually represents the value at the position of that numerical argument. Can only be used where this applies.
An F# acciaccatura before the note represents the same thing as an F acciaccatura, but is instead applied to the second argument. Again, can only be used where it applies.
A C acciaccatura means that the first numerical argument is negative. A C-sharp acciaccatura means that the second numerical argument is instead negative.
Measures
Each function or eighth note of numerical input constitutes one beat; each acciaccatura constitutes zero. One measure is always eight beats, including the last, which is buffered with eighth rests. This rule applies no matter how horrible the time signatures get.
Examples
Hello World:
Factorial:
Truth-machine:
Cat:
