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refactor rule decomposition for cleanliness

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This commit is contained in:
Sorrel Bri 2020-02-20 17:06:13 -08:00
parent 6885aeba2f
commit 471759a7cf
3 changed files with 47 additions and 52 deletions
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2
src/reducers/reducer.init.js
View file

@ -16,7 +16,7 @@ export const initState = (changesArgument: number): stateType => {
'[+ sonorant - low rounded high back]>0/._.', '[+ sonorant - low rounded high back]>0/._.',
'[+ obstruent]>[+ obstruent aspirated ]/#_.', '[+ obstruent]>[+ obstruent aspirated ]/#_.',
'[+ sonorant - rounded]>[+ sonorant + rounded]/._#', '[+ sonorant - rounded]>[+ sonorant + rounded]/._#',
'nn>nun/._.' 'at>ta/._#'
] ]
} }
], ],

59
src/reducers/reducer.results.js
View file

@ -67,9 +67,9 @@ const findFeaturesFromGrapheme = (phones: {}, lexeme:string): [] => {
const errorMessage = ([prefix, separator], location, err) => `${prefix}${location}${separator}${err}` const errorMessage = ([prefix, separator], location, err) => `${prefix}${location}${separator}${err}`
const lintRule = (rule) => { const lintRule = (rule) => {
if (rule.match(/>/g) === null) throw `Insert '>' operator between target and result` if (!rule.match(/>/g)) throw `Insert '>' operator between target and result`
if (rule.match(/\//g) === null) throw `Insert '/' operator between change and environment` if (!rule.match(/\//g)) throw `Insert '/' operator between change and environment`
if (rule.match(/_/g) === null) throw `Insert '_' operator in environment` if (!rule.match(/_/g)) throw `Insert '_' operator in environment`
if (rule.match(/>/g).length > 1) throw `Too many '>' operators` if (rule.match(/>/g).length > 1) throw `Too many '>' operators`
if (rule.match(/\//g).length > 1) throw `Too many '/' operators` if (rule.match(/\//g).length > 1) throw `Too many '/' operators`
if (rule.match(/_/g).length > 1) throw `Too many '_' operators` if (rule.match(/_/g).length > 1) throw `Too many '_' operators`
@ -77,55 +77,50 @@ const lintRule = (rule) => {
} }
const decomposeRule = (rule: string, index: number): ruleBundle => { const decomposeRule = (rule: string, index: number): ruleBundle => {
// splits rule at '>' '/' and '_' substrings resulting in array of length 4
try { try {
// splits rule at '>' '/' and '_' substrings resulting in array of length 4
const [position, newFeatures, pre, post] = lintRule(rule); const [position, newFeatures, pre, post] = lintRule(rule);
return { return { environment: { pre, position, post }, newFeatures }
environment: { pre, position, post },
newFeatures
}
} catch (err) { } catch (err) {
throw errorMessage`Error in line ${index + 1}: ${err}`; throw errorMessage`Error in line ${index + 1}: ${err}`;
} }
} }
const isUnknownFeatureToken = token => token !== '-' && token !== '+' && token !== ']' && token !== '[' && token !== ' ';
const doesFeatureRuleContainUnknownToken = features => { const doesFeatureRuleContainUnknownToken = features => {
const unknownTokens = features const unknownTokens = features
.match(/\W/g) .match(/\W/g)
.filter(v => v !== '-' && v !== '+' && v !== ']' && v !== '[' && v !== ' ') .filter(isUnknownFeatureToken)
if (unknownTokens.length) throw `Unknown token '${unknownTokens[0]}'`; if (unknownTokens.length) throw `Unknown token '${unknownTokens[0]}'`;
return true return true
} }
const getPositiveFeatures = phoneme => { const reduceFeaturesToBoolean = bool => (map, feature) => ({...map, [feature]: bool})
try {
const positiveFeatures = phoneme.match(/(?=\+.).*(?<=\-)|(?=\+.).*(?!\-).*(?<=\])/g)
if (positiveFeatures) doesFeatureRuleContainUnknownToken(positiveFeatures[0])
return positiveFeatures ? positiveFeatures[0]
.trim().match(/\w+/g)
.reduce((map, feature) => ({...map, [feature]: true}), {})
: {}
} catch (err) {
throw err;
}
}
const getNegativeFeatures = phoneme => { const getFeatures = (phoneme: string, featureBoolean): {} => {
try { try {
const negativeFeatures = phoneme.match(/(?=\-.).*(?<=\+)|(?=\-.).*(?!\+).*(?<=\])/g) const featureMatch = featureBoolean
if (negativeFeatures) doesFeatureRuleContainUnknownToken(negativeFeatures[0]) // regEx to pull positive features
return negativeFeatures ? negativeFeatures[0] ? /(?=\+.).*(?<=\-)|(?=\+.).*(?!\-).*(?<=\])/g
// regEx to pull negative features
: /(?=\-.).*(?<=\+)|(?=\-.).*(?!\+).*(?<=\])/g
const [ features ] = phoneme.match(featureMatch) || [ null ];
if (features) {
doesFeatureRuleContainUnknownToken(features)
return features
.trim() .trim()
.match(/\w+/g) .match(/\w+/g)
.reduce((map, feature) => ({...map, [feature]: false}), {}) .reduce(reduceFeaturesToBoolean(featureBoolean), {})
: {} }
return {}
} catch (err) { } catch (err) {
throw err; throw err;
} }
} }
const mapToPositiveAndNegativeFeatures = phoneme => ( const mapToPositiveAndNegativeFeatures = phoneme => (
{ ...getPositiveFeatures(phoneme), ...getNegativeFeatures(phoneme) } ) { ...getFeatures(phoneme, true), ...getFeatures(phoneme, false) } )
const mapStringToFeatures = (ruleString, phones) => { const mapStringToFeatures = (ruleString, phones) => {
if (ruleString) { if (ruleString) {
@ -194,7 +189,7 @@ const isEnvironmentBoundByRule = (phonemeFeatures, ruleFeatures) => {
? true : false; ? true : false;
} }
const swapPhoneme = (phoneme, newFeatures, features) => { const transformPhoneme = (phoneme, newFeatures, features) => {
if (!newFeatures) return {} if (!newFeatures) return {}
const newPhonemeFeatures = Object.entries(newFeatures) const newPhonemeFeatures = Object.entries(newFeatures)
.reduce((newPhoneme, [newFeature, newValue]) => ({ ...newPhoneme, [newFeature]: newValue }) .reduce((newPhoneme, [newFeature, newValue]) => ({ ...newPhoneme, [newFeature]: newValue })
@ -210,7 +205,7 @@ const transformLexemeInitial = (newLexeme, pre, post, position, phoneme, index,
if (index !== pre.length - 1) return [...newLexeme, phoneme]; if (index !== pre.length - 1) return [...newLexeme, phoneme];
if (!isEnvironmentBoundByRule([phoneme], position)) return [...newLexeme, phoneme]; if (!isEnvironmentBoundByRule([phoneme], position)) return [...newLexeme, phoneme];
if (!isEnvironmentBoundByRule(lexemeBundle.slice(index, index + post.length), post)) return [...newLexeme, phoneme]; if (!isEnvironmentBoundByRule(lexemeBundle.slice(index, index + post.length), post)) return [...newLexeme, phoneme];
const newPhoneme = swapPhoneme(phoneme, newFeatures[0], features); const newPhoneme = transformPhoneme(phoneme, newFeatures[0], features);
return [...newLexeme, newPhoneme]; return [...newLexeme, newPhoneme];
} }
@ -218,7 +213,7 @@ const transformLexemeCoda = (newLexeme, pre, post, position, phoneme, index, lex
if (index + post.length !== lexemeBundle.length) return [...newLexeme, phoneme]; if (index + post.length !== lexemeBundle.length) return [...newLexeme, phoneme];
if (!isEnvironmentBoundByRule(lexemeBundle.slice(index - pre.length, index), pre)) return [...newLexeme, phoneme]; if (!isEnvironmentBoundByRule(lexemeBundle.slice(index - pre.length, index), pre)) return [...newLexeme, phoneme];
if (!isEnvironmentBoundByRule([phoneme], position)) return [...newLexeme, phoneme]; if (!isEnvironmentBoundByRule([phoneme], position)) return [...newLexeme, phoneme];
const newPhoneme = swapPhoneme(phoneme, newFeatures[0], features); const newPhoneme = transformPhoneme(phoneme, newFeatures[0], features);
return [...newLexeme, newPhoneme]; return [...newLexeme, newPhoneme];
} }
@ -231,7 +226,7 @@ export const transformLexeme = (lexemeBundle, rule, features) => {
if (!isEnvironmentBoundByRule(lexemeBundle.slice(index - pre.length, index), pre)) return [...newLexeme, phoneme]; if (!isEnvironmentBoundByRule(lexemeBundle.slice(index - pre.length, index), pre)) return [...newLexeme, phoneme];
if (!isEnvironmentBoundByRule([phoneme], position)) return [...newLexeme, phoneme]; if (!isEnvironmentBoundByRule([phoneme], position)) return [...newLexeme, phoneme];
if (!isEnvironmentBoundByRule(lexemeBundle.slice(index, index + post.length), post)) return [...newLexeme, phoneme]; if (!isEnvironmentBoundByRule(lexemeBundle.slice(index, index + post.length), post)) return [...newLexeme, phoneme];
const newPhoneme = swapPhoneme(phoneme, rule.newFeatures[0], features); const newPhoneme = transformPhoneme(phoneme, rule.newFeatures[0], features);
// if deletion occurs // if deletion occurs
if (!newPhoneme.grapheme) return [ ...newLexeme] ; if (!newPhoneme.grapheme) return [ ...newLexeme] ;
return [...newLexeme, newPhoneme]; return [...newLexeme, newPhoneme];

34
src/reducers/reducer.results.test.js
View file

@ -69,7 +69,7 @@ describe('Results', () => {
expect(transformLexeme(lexemeBundle, rule, initState().features)).toEqual(resultsLexeme) expect(transformLexeme(lexemeBundle, rule, initState().features)).toEqual(resultsLexeme)
}) })
it('results returned from first sound change rule', () => { it('results returned from first sound change rule (feature matching)', () => {
const action = {type: 'RUN'}; const action = {type: 'RUN'};
state = initState(1) state = initState(1)
expect(stateReducer(state, action).results).toEqual([ expect(stateReducer(state, action).results).toEqual([
@ -82,7 +82,7 @@ describe('Results', () => {
]); ]);
}); });
it('results returned through second sound change rule', () => { it('results returned through second sound change rule (phoneme matching)', () => {
const action = {type: 'RUN'}; const action = {type: 'RUN'};
state = initState(2) state = initState(2)
expect(stateReducer(state, action).results).toEqual([ expect(stateReducer(state, action).results).toEqual([
@ -95,7 +95,7 @@ describe('Results', () => {
]); ]);
}); });
it('results returned through third sound change rule', () => { it('results returned through third sound change rule (phoneme dropping)', () => {
const action = {type: 'RUN'}; const action = {type: 'RUN'};
state = initState(3) state = initState(3)
expect(stateReducer(state, action).results).toEqual([ expect(stateReducer(state, action).results).toEqual([
@ -108,7 +108,7 @@ describe('Results', () => {
]); ]);
}); });
it('results returned through fourth sound change rule', () => { it('results returned through fourth sound change rule (lexeme initial environment)', () => {
const action = {type: 'RUN'}; const action = {type: 'RUN'};
state = initState(4) state = initState(4)
expect(stateReducer(state, action).results).toEqual([ expect(stateReducer(state, action).results).toEqual([
@ -121,7 +121,7 @@ describe('Results', () => {
]); ]);
}); });
it('results returned through fifth sound change rule', () => { it('results returned through fifth sound change rule (lexeme final environment)', () => {
const action = {type: 'RUN'}; const action = {type: 'RUN'};
state = initState(5) state = initState(5)
expect(stateReducer(state, action).results).toEqual([ expect(stateReducer(state, action).results).toEqual([
@ -135,18 +135,18 @@ describe('Results', () => {
}); });
// it('results returned through sixth sound change rule', () => { it('results returned through sixth sound change rule (multi-phoneme target)', () => {
// const action = {type: 'RUN'}; const action = {type: 'RUN'};
// state = initState(5) state = initState(5)
// expect(stateReducer(state, action).results).toEqual([ expect(stateReducer(state, action).results).toEqual([
// { {
// pass: 'epoch 1', pass: 'epoch 1',
// lexicon: [ lexicon: [
// 'anunu', 'anat', 'ant', 'anunu', 'tʰan', 'nunu' 'annu', 'anta', 'ant', 'annu', 'tʰan', 'nnu'
// ] ]
// } }
// ]); ]);
// }); });
}); });