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Author	SHA1	Message	Date
H1K0	a473499fac	feat: implement .chord file parser and canonical transposer; freeze requirements src/tokenizer.py: - parse_chord_file(Path) → ChordPeriod: reads header + bar body, strips // comments, validates bar position counts and chord symbols, raises ChordFormatError with filename and bar number on any violation. - transpose_to_canonical(ChordPeriod) → ChordPeriod: shifts all chord roots and bass notes by the semitone offset to C major / A minor; fast-path returns the original object when shift == 0. tests/test_chord_file_parser.py: 39 tests covering parsing of 4 valid fixtures (C major, F# major, B minor, G# minor), error messages for 2 invalid fixtures, and transposition correctness including slash chord root+bass. tests/fixtures/: 6 .chord fixture files (4 valid, 2 invalid). requirements.txt: pinned to current latest stable versions (torch 2.12.0, music21 10.1.0, pretty_midi 0.2.11, matplotlib 3.10.9, numpy 2.4.6, pandas 3.0.3, pytest 9.0.3); Python >= 3.11 noted. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>	2026-05-19 15:27:57 +03:00
H1K0	dd77de00d0	feat: implement chord symbol parser with full test suite Adds src/chord_parser.py with parse_chord_symbol() → ChordTokens. Handles all 18 qualities (including Unicode °/Δ/ø variants and alternative spellings), shorthand expansion (maj9 → maj7+ext9, C9 → 7+ext9, etc.), slash chords, and flat→sharp root normalization. Raises ChordParseError with a descriptive message on bad input. Adds tests/test_chord_parser.py: 90 tests covering all qualities, all 7 extension values (including shorthands), slash chords, root normalization, all §4.6 spec examples, and 10 invalid-input cases. Adds requirements.txt with project dependencies. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>	2026-05-19 11:17:10 +03:00

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H1K0

a473499fac

feat: implement .chord file parser and canonical transposer; freeze requirements

src/tokenizer.py:
  - parse_chord_file(Path) → ChordPeriod: reads header + bar body, strips //
    comments, validates bar position counts and chord symbols, raises
    ChordFormatError with filename and bar number on any violation.
  - transpose_to_canonical(ChordPeriod) → ChordPeriod: shifts all chord roots
    and bass notes by the semitone offset to C major / A minor; fast-path
    returns the original object when shift == 0.

tests/test_chord_file_parser.py: 39 tests covering parsing of 4 valid fixtures
  (C major, F# major, B minor, G# minor), error messages for 2 invalid
  fixtures, and transposition correctness including slash chord root+bass.

tests/fixtures/: 6 .chord fixture files (4 valid, 2 invalid).

requirements.txt: pinned to current latest stable versions
  (torch 2.12.0, music21 10.1.0, pretty_midi 0.2.11, matplotlib 3.10.9,
  numpy 2.4.6, pandas 3.0.3, pytest 9.0.3); Python >= 3.11 noted.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

2026-05-19 15:27:57 +03:00

H1K0

dd77de00d0

feat: implement chord symbol parser with full test suite

Adds src/chord_parser.py with parse_chord_symbol() → ChordTokens.
Handles all 18 qualities (including Unicode °/Δ/ø variants and
alternative spellings), shorthand expansion (maj9 → maj7+ext9,
C9 → 7+ext9, etc.), slash chords, and flat→sharp root normalization.
Raises ChordParseError with a descriptive message on bad input.

Adds tests/test_chord_parser.py: 90 tests covering all qualities,
all 7 extension values (including shorthands), slash chords, root
normalization, all §4.6 spec examples, and 10 invalid-input cases.

Adds requirements.txt with project dependencies.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

2026-05-19 11:17:10 +03:00

2 Commits