add support for word end and phoneme deletion
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a19102f82e
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07be982b51
3 changed files with 63 additions and 16 deletions
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@ -5,15 +5,15 @@ export type initAction = {
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type: "INIT"
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}
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export const initState = (changesArgument: number = -1): stateType => {
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export const initState = (changesArgument: number): stateType => {
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const state = {
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epochs: [
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{
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name: 'epoch 1',
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changes: [
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'[+ occlusive - nasal]>[+ occlusive + nasal]/n_.',
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// 'at>ta/._#',
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// '[+ sonorant - low rounded high back]>0/._.',
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'a>ɯ/._#',
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'[+ sonorant - low rounded high back]>0/._.',
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// 'nn>nun/._.',
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// '[+ nasal][+ obstruent]>[+ nasal obstruent aspirated ]/#_.',
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// '[+ sonorant rounded]>[+ sonorant - rounded]/._#'
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@ -43,7 +43,7 @@ export const initState = (changesArgument: number = -1): stateType => {
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},
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t: {
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grapheme: 't', features: {
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occlusive: true, coronal: true, obstruent: true
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occlusive: true, coronal: true, obstruent: true, nasal: false
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},
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ʰ: {
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grapheme: 'tʰ', features: {
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@ -86,7 +86,7 @@ export const initState = (changesArgument: number = -1): stateType => {
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{lexeme: 'ənta', epoch: state.epochs[0]}
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]
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if(changesArgument > -1) state.epochs[0].changes = state.epochs[0].changes.splice(changesArgument, 1)
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if(changesArgument > -1) state.epochs[0].changes = state.epochs[0].changes.splice(0, changesArgument)
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return state;
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}
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@ -43,6 +43,7 @@ const findFeaturesFromLexeme = (phones: {}, lexeme:string): [] => {
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})
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return featureBundle;
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}
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const findFeaturesFromGrapheme = (phones: {}, lexeme:string): [] => {
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let featureBundle = []
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let lastIndex = lexeme.length - 1;
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@ -94,6 +95,8 @@ const mapToPositiveAndNegativeFeatures = phoneme => (
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const mapStringToFeatures = (ruleString, phones) => {
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if (ruleString) {
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if (ruleString === '.') return [];
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if (ruleString === '#') return ['#']
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if (ruleString === '0') return [];
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const ruleBrackets = ruleString.match(/\[.*\]/)
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if (ruleBrackets) {
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return ruleString
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@ -129,6 +132,7 @@ const isPhonemeBoundByRule = phonemeFeatures => (ruleFeature, index) => {
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const phoneme = phonemeFeatures[index].features;
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return Object.entries(ruleFeature).reduce((bool, [feature, value]) => {
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if (!bool) return false;
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if (!phoneme.hasOwnProperty(feature)) return false;
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if (!phoneme[feature] && !value) return true;
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if (phoneme[feature] !== value) return false;
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return true;
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@ -141,9 +145,8 @@ const isEnvironmentBoundByRule = (phonemeFeatures, ruleFeatures) => {
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? true : false;
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}
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const swapPhoneme = (phoneme, newFeatures, features) => {
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if (!newFeatures) return {}
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const newPhonemeFeatures = Object.entries(newFeatures)
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.reduce((newPhoneme, [newFeature, newValue]) => ({ ...newPhoneme, [newFeature]: newValue })
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, {...phoneme.features});
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@ -154,12 +157,30 @@ const swapPhoneme = (phoneme, newFeatures, features) => {
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, newPhonemeCandidates[newPhonemeCandidates.length - 1])[0];
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}
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const transformLexemeInitial = (newLexeme, pre, post, position, phoneme, index, lexemeBundle, newFeatures, features) => {
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if (index !== pre.length - 1) return [...newLexeme, phoneme];
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if (!isEnvironmentBoundByRule([phoneme], position)) return [...newLexeme, phoneme];
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if (!isEnvironmentBoundByRule(lexemeBundle.slice(index, index + post.length), post)) return [...newLexeme, phoneme];
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const newPhoneme = swapPhoneme(phoneme, newFeatures[0], features);
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return [...newLexeme, newPhoneme];
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}
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const transformLexemeCoda = (newLexeme, pre, post, position, phoneme, index, lexemeBundle, newFeatures, features) => {
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if (index + post.length !== lexemeBundle.length) return [...newLexeme, phoneme];
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if (!isEnvironmentBoundByRule(lexemeBundle.slice(index - pre.length, index), pre)) return [...newLexeme, phoneme];
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if (!isEnvironmentBoundByRule([phoneme], position)) return [...newLexeme, phoneme];
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const newPhoneme = swapPhoneme(phoneme, newFeatures[0], features);
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return [...newLexeme, newPhoneme];
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}
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export const transformLexeme = (lexemeBundle, rule, features) => {
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const {pre, post, position} = rule.environment;
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const newLexeme = lexemeBundle.reduce((newLexeme, phoneme, index) => {
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if (pre.find(val => val === '#')) return transformLexemeInitial(newLexeme, pre, post, position, phoneme, index, lexemeBundle, rule.newFeatures, features);
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if (post.find(val => val === '#')) return transformLexemeCoda(newLexeme, pre, post, position, phoneme, index, lexemeBundle, rule.newFeatures, features);
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if ( index < pre.length || index >= lexemeBundle.length - post.length ) return [...newLexeme, phoneme];
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if (!isEnvironmentBoundByRule(lexemeBundle.slice(index - pre.length, index), pre)) return [...newLexeme, phoneme];
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if (!isEnvironmentBoundByRule([phoneme], rule.environment.position)) return [...newLexeme, phoneme];
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if (!isEnvironmentBoundByRule([phoneme], position)) return [...newLexeme, phoneme];
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if (!isEnvironmentBoundByRule(lexemeBundle.slice(index, index + post.length), post)) return [...newLexeme, phoneme];
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const newPhoneme = swapPhoneme(phoneme, rule.newFeatures[0], features);
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return [...newLexeme, newPhoneme];
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@ -173,7 +194,7 @@ const transformLexicon = lexiconBundle =>
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ruleBundle =>
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features =>
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lexiconBundle.map(lexemeBundle => ruleBundle.reduce(
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(lexeme, rule) => transformLexeme(lexeme, rule, features)
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(lexeme, rule, i) => transformLexeme(lexeme, rule, features)
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, lexemeBundle
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))
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@ -55,7 +55,7 @@ describe('Results', () => {
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},
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{
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grapheme: 't',
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features: { occlusive: true, coronal: true, obstruent: true }
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features: { occlusive: true, coronal: true, obstruent: true, nasal: false }
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},
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{
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grapheme: 'a',
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@ -88,7 +88,7 @@ describe('Results', () => {
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it('results returned from first sound change rule', () => {
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const action = {type: 'RUN'};
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state = initState(0)
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state = initState(1)
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expect(stateReducer(state, action).results).toEqual([
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{
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pass: 'epoch 1',
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@ -99,18 +99,44 @@ describe('Results', () => {
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]);
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});
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if('results returned from sound change suite', () => {
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it('results returned through second sound change rule', () => {
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const action = {type: 'RUN'};
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state = initState()
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console.log(stateReducer(state, action).results)
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state = initState(2)
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expect(stateReducer(state, action).results).toEqual([
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{
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pass: 'epoch 1',
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lexicon: [
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'anna', 'anat', 'anət', 'anna', 'tan', 'ənna'
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'annɯ', 'anat', 'anət', 'annɯ', 'tan', 'ənnɯ'
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]
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}
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]);
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});
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it('results returned through third sound change rule', () => {
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const action = {type: 'RUN'};
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state = initState(3)
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expect(stateReducer(state, action).results).toEqual([
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{
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pass: 'epoch 1',
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lexicon: [
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'annɯ', 'anat', 'ant', 'annɯ', 'tan', 'nnɯ'
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]
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}
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]);
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});
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// if('results returned from sound change suite', () => {
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// const action = {type: 'RUN'};
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// state = initState()
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// console.log(stateReducer(state, action).results)
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// expect(stateReducer(state, action).results).toEqual([
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// {
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// pass: 'epoch 1',
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// lexicon: [
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// 'anna', 'anta', 'anət', 'anna', 'tan', 'ənna'
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// ]
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// }
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// ]);
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// });
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});
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