mon-entreprise/publicodes/source/parse.tsx

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// This should be the new way to implement mecanisms
// In a specific file
// TODO import them automatically
// TODO convert the legacy functions to new files
import mecanismRound, { unchainRoundMecanism } from './mecanisms/arrondi'
import barème from './mecanisms/barème'
import durée from './mecanisms/durée'
import encadrement from './mecanisms/encadrement'
import grille from './mecanisms/grille'
import operation from './mecanisms/operation'
import régularisation from './mecanisms/régularisation'
import tauxProgressif from './mecanisms/tauxProgressif'
import variableTemporelle from './mecanisms/variableTemporelle'
import variations from './mecanisms/variations'
import { Grammar, Parser } from 'nearley'
import {
add,
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difference,
divide,
equals,
fromPairs,
gt,
gte,
lt,
lte,
multiply,
subtract
} from 'ramda'
import React from 'react'
import { EngineError, syntaxError } from './error'
import { formatValue } from './format'
import grammar from './grammar.ne'
import {
mecanismAllOf,
mecanismInversion,
mecanismMax,
mecanismMin,
mecanismOneOf,
mecanismOnePossibility,
mecanismProduct,
mecanismRecalcul,
mecanismReduction,
mecanismSum,
mecanismSynchronisation
} from './mecanisms'
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import { parseReferenceTransforms } from './parseReference'
import { EvaluatedRule } from './types'
export const parse = (rules, rule, parsedRules) => rawNode => {
if (rawNode == null) {
syntaxError(
rule.dottedName,
`
Une des valeurs de la formule est vide.
Vérifiez que tous les champs à droite des deux points sont remplis`
)
}
if (typeof rawNode === 'boolean') {
syntaxError(
rule.dottedName,
`
Les valeure booléenes true / false ne sont acceptée.
Utilisez leur contrepartie française : 'oui' / 'non'`
)
}
const node =
typeof rawNode === 'object' ? rawNode : parseExpression(rule, '' + rawNode)
const parsedNode = parseMecanism(rules, rule, parsedRules)(node)
parsedNode.evaluate = parsedNode.evaluate ?? ((_, __, ___, node) => node)
return parsedNode
}
const compiledGrammar = Grammar.fromCompiled(grammar)
const parseExpression = (rule, rawNode) => {
/* Strings correspond to infix expressions.
* Indeed, a subset of expressions like simple arithmetic operations `3 + (quantity * 2)` or like `salary [month]` are more explicit that their prefixed counterparts.
* This function makes them prefixed operations. */
try {
const [parseResult] = new Parser(compiledGrammar).feed(rawNode).results
return parseResult
} catch (e) {
syntaxError(
rule.dottedName,
`\`${rawNode}\` n'est pas une expression valide`,
e
)
}
}
const parseMecanism = (rules, rule, parsedRules) => rawNode => {
if (Array.isArray(rawNode)) {
syntaxError(
rule.dottedName,
`
Il manque le nom du mécanisme pour le tableau : [${rawNode
.map(x => `'${x}'`)
.join(', ')}]
Les mécanisme possibles sont : 'somme', 'le maximum de', 'le minimum de', 'toutes ces conditions', 'une de ces conditions'.
`
)
}
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const keys = Object.keys(rawNode)
const unchainableMecanisms = difference(keys, chainableMecanisms)
if (keys.length > 1) {
if (unchainableMecanisms.length > 1) {
syntaxError(
rule.dottedName,
`
Les mécanismes suivants se situent au même niveau : ${unchainableMecanisms
.map(x => `'${x}'`)
.join(', ')}
Cela vient probablement d'une erreur dans l'indentation
`
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)
}
return parseChainedMecanisms(rules, rule, parsedRules, rawNode)
}
const mecanismName = Object.keys(rawNode)[0]
const values = rawNode[mecanismName]
const parseFunctions = {
...statelessParseFunction,
'une possibilité': mecanismOnePossibility(rule.dottedName),
'inversion numérique': mecanismInversion(rule.dottedName),
recalcul: mecanismRecalcul(rule.dottedName),
filter: () =>
parseReferenceTransforms(
rules,
rule,
parsedRules
)({
filter: values.filter,
variable: values.explanation
}),
variable: () =>
parseReferenceTransforms(rules, rule, parsedRules)({ variable: values }),
unitConversion: () =>
parseReferenceTransforms(
rules,
rule,
parsedRules
)({
variable: values.explanation,
unit: values.unit
})
}
const parseFn = parseFunctions[mecanismName]
if (!parseFn) {
syntaxError(
rule.dottedName,
`
Le mécanisme ${mecanismName} est inconnu.
Vérifiez qu'il n'y ait pas d'erreur dans l'orthographe du nom.`
)
}
try {
return parseFn(parse(rules, rule, parsedRules), mecanismName, values)
} catch (e) {
if (e instanceof EngineError) {
throw e
}
syntaxError(rule.dottedName, e.message)
}
}
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const chainableMecanisms = ['arrondi', 'plancher', 'plafond']
function parseChainedMecanisms(rules, rule, parsedRules, rawNode) {
const keys = Object.keys(rawNode)
const recurse = parseMecanism(rules, rule, parsedRules)
if (keys.includes('arrondi')) {
return recurse(
unchainRoundMecanism(parse(rules, rule, parsedRules), rawNode)
)
} else if (keys.includes('plancher')) {
const { plancher, ...valeur } = rawNode
return recurse({
encadrement: {
valeur,
plancher
}
})
} else if (keys.includes('plafond')) {
const { plafond, ...valeur } = rawNode
return recurse({
encadrement: {
valeur,
plafond
}
})
}
}
const knownOperations = {
'*': [multiply, '×'],
'/': [divide, ''],
'+': [add],
'-': [subtract, ''],
'<': [lt],
'<=': [lte, '≤'],
'>': [gt],
'>=': [gte, '≥'],
'=': [equals],
'!=': [(a, b) => !equals(a, b), '≠']
}
const operationDispatch = fromPairs(
Object.entries(knownOperations).map(([k, [f, symbol]]) => [
k,
operation(k, f, symbol)
])
)
const statelessParseFunction = {
...operationDispatch,
'une de ces conditions': mecanismOneOf,
'toutes ces conditions': mecanismAllOf,
somme: mecanismSum,
régularisation,
multiplication: mecanismProduct,
produit: mecanismProduct,
temporalValue: variableTemporelle,
arrondi: mecanismRound,
barème,
grille,
'taux progressif': tauxProgressif,
encadrement,
durée,
'le maximum de': mecanismMax,
'le minimum de': mecanismMin,
allègement: mecanismReduction,
variations,
synchronisation: mecanismSynchronisation,
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valeur: (recurse, __, v) => recurse(v),
constant: (_, __, v) => ({
type: v.type,
constant: true,
nodeValue: v.nodeValue,
unit: v.unit,
// eslint-disable-next-line
jsx: ({ nodeValue, unit }: EvaluatedRule) => (
<span className={v.type}>
{formatValue({
unit,
nodeValue,
language: 'fr',
// We want to display constants with full precision,
// espacilly for percentages like APEC 0,036 %
precision: 5
})}
</span>
)
})
}