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| def extract_tone(syllable: str) -> int: | |
| return int(syllable[-1]) - 1 | |
| jyutping_initials = ['∅', 'ng', 'gw', 'kw', 'b', 'p', 'm', 'f', 'd', 't', 'n', 'l', 'g', 'k', 'h', 'w', 'z', 'c', 's', 'j'] | |
| def extract_initial(syllable: str) -> (int, str): | |
| for i, initial in enumerate(jyutping_initials): | |
| if syllable.startswith(initial): | |
| return (i, initial) | |
| return (0, '') | |
| def inflate_initial(initial: int) -> str: | |
| return jyutping_initials[initial] if initial != 0 else '' | |
| jyutping_nuclei = ['∅', 'aa', 'yu', 'eo', 'oe', 'a', 'i', 'u', 'e', 'o'] | |
| def extract_nucleus(syllable: str, initial: str) -> int: | |
| syllable = syllable[len(initial):] | |
| for i, nucleus in enumerate(jyutping_nuclei): | |
| if syllable.startswith(nucleus): | |
| return (i, nucleus) | |
| return (0, '') | |
| def inflate_nucleus(nucleus: int) -> str: | |
| return jyutping_nuclei[nucleus] if nucleus != 0 else '' | |
| jyutping_codas = ['∅', 'ng', 'p', 't', 'k', 'm', 'n', 'i', 'u'] | |
| def extract_coda(syllable: str, initial: str, nucleus: str) -> int: | |
| syllable = syllable[len(initial) + len(nucleus):] | |
| for i, coda in enumerate(jyutping_codas): | |
| if syllable.startswith(coda): | |
| return (i, coda) | |
| return (0, '') | |
| def inflate_coda(coda: int) -> str: | |
| return jyutping_codas[coda] if coda != 0 else '' | |
| syllable = 'neoi5' | |
| initial_int, initial = extract_initial(syllable) | |
| nucleus_int, nucleus = extract_nucleus(syllable, initial) | |
| coda_int, coda = extract_coda(syllable, initial, nucleus) | |
| assert(initial == 'n' and initial_int == 10) | |
| assert(nucleus == 'eo' and nucleus_int == 3) | |
| assert(coda == 'i' and coda_int == 7) | |
| syllable = 'gwok3' | |
| initial_int, initial = extract_initial(syllable) | |
| nucleus_int, nucleus = extract_nucleus(syllable, initial) | |
| coda_int, coda = extract_coda(syllable, initial, nucleus) | |
| assert(initial == 'gw' and initial_int == 2) | |
| assert(nucleus == 'o' and nucleus_int == 9) | |
| assert(coda == 'k' and coda_int == 4) | |
| syllable = 'oi3' | |
| initial_int, initial = extract_initial(syllable) | |
| nucleus_int, nucleus = extract_nucleus(syllable, initial) | |
| coda_int, coda = extract_coda(syllable, initial, nucleus) | |
| assert(initial == '' and initial_int == 0) | |
| assert(nucleus == 'o' and nucleus_int == 9) | |
| assert(coda == 'i' and coda_int == 7) | |
| syllable = 'ng4' | |
| initial_int, initial = extract_initial(syllable) | |
| nucleus_int, nucleus = extract_nucleus(syllable, initial) | |
| coda_int, coda = extract_coda(syllable, initial, nucleus) | |
| assert(initial == 'ng' and initial_int == 1) | |
| assert(nucleus == '' and nucleus_int == 0) | |
| assert(coda == '' and coda_int == 0) | |
| syllable = 'ngo5' | |
| initial_int, initial = extract_initial(syllable) | |
| nucleus_int, nucleus = extract_nucleus(syllable, initial) | |
| coda_int, coda = extract_coda(syllable, initial, nucleus) | |
| assert(initial == 'ng' and initial_int == 1) | |
| assert(nucleus == 'o' and nucleus_int == 9) | |
| assert(coda == '' and coda_int == 0) | |
| syllable = 'a3' | |
| initial_int, initial = extract_initial(syllable) | |
| nucleus_int, nucleus = extract_nucleus(syllable, initial) | |
| coda_int, coda = extract_coda(syllable, initial, nucleus) | |
| assert(initial == '' and initial_int == 0) | |
| assert(nucleus == 'a' and nucleus_int == 5) | |
| assert(coda == '' and coda_int == 0) | |
| syllable = 'aa3' | |
| initial_int, initial = extract_initial(syllable) | |
| nucleus_int, nucleus = extract_nucleus(syllable, initial) | |
| coda_int, coda = extract_coda(syllable, initial, nucleus) | |
| assert(initial == '' and initial_int == 0) | |
| assert(nucleus == 'aa' and nucleus_int == 1) | |
| assert(coda == '' and coda_int == 0) | |
| syllable = 'ngaang6' | |
| initial_int, initial = extract_initial(syllable) | |
| nucleus_int, nucleus = extract_nucleus(syllable, initial) | |
| coda_int, coda = extract_coda(syllable, initial, nucleus) | |
| assert(initial == 'ng' and initial_int == 1) | |
| assert(nucleus == 'aa' and nucleus_int == 1) | |
| assert(coda == 'ng' and coda_int == 1) | |
| def extract_jyutping(syllable: str) -> (int, int, int, int): | |
| initial_int, initial = extract_initial(syllable) | |
| nucleus_int, nucleus = extract_nucleus(syllable, initial) | |
| coda_int, _ = extract_coda(syllable, initial, nucleus) | |
| tone = extract_tone(syllable) | |
| return (initial_int, nucleus_int, coda_int, tone) | |
| def inflate_jyutping(initial: int, nucleus: int, coda: int, tone: int) -> str: | |
| return f"{inflate_initial(initial)}{inflate_nucleus(nucleus)}{inflate_coda(coda)}{tone + 1}" | |