| ... | @@ -0,0 +1,31 @@ |
| 1 | const std = @import("std"); |
| 2 | |
| 3 | const source = "A-"; |
| 4 | |
| 5 | fn parseNote() ?i32 { |
| 6 | const letter = source[0]; |
| 7 | const modifier = source[1]; |
| 8 | |
| 9 | const semitone = blk: { |
| 10 | if (letter == 'C' and modifier == '-') break :blk @as(i32, 0); |
| 11 | if (letter == 'C' and modifier == '#') break :blk @as(i32, 1); |
| 12 | if (letter == 'D' and modifier == '-') break :blk @as(i32, 2); |
| 13 | if (letter == 'D' and modifier == '#') break :blk @as(i32, 3); |
| 14 | if (letter == 'E' and modifier == '-') break :blk @as(i32, 4); |
| 15 | if (letter == 'F' and modifier == '-') break :blk @as(i32, 5); |
| 16 | if (letter == 'F' and modifier == '#') break :blk @as(i32, 6); |
| 17 | if (letter == 'G' and modifier == '-') break :blk @as(i32, 7); |
| 18 | if (letter == 'G' and modifier == '#') break :blk @as(i32, 8); |
| 19 | if (letter == 'A' and modifier == '-') break :blk @as(i32, 9); |
| 20 | if (letter == 'A' and modifier == '#') break :blk @as(i32, 10); |
| 21 | if (letter == 'B' and modifier == '-') break :blk @as(i32, 11); |
| 22 | return null; |
| 23 | }; |
| 24 | |
| 25 | return semitone; |
| 26 | } |
| 27 | |
| 28 | test "fixed" { |
| 29 | const result = parseNote(); |
| 30 | std.testing.expect(result.? == 9); |
| 31 | } |