overleaf/services/web/scripts/lezer-latex/generate.js

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const { buildParserFile } = require('@lezer/generator')
const { writeFileSync, readFileSync } = require('fs')
const path = require('path')
const grammars = [
{
grammarPath: path.resolve(
__dirname,
'../../frontend/js/features/source-editor/lezer-latex/latex.grammar'
),
parserOutputPath: path.resolve(
__dirname,
'../../frontend/js/features/source-editor/lezer-latex/latex.mjs'
),
termsOutputPath: path.resolve(
__dirname,
'../../frontend/js/features/source-editor/lezer-latex/latex.terms.mjs'
),
},
{
grammarPath: path.resolve(
__dirname,
'../../frontend/js/features/source-editor/lezer-bibtex/bibtex.grammar'
),
parserOutputPath: path.resolve(
__dirname,
'../../frontend/js/features/source-editor/lezer-bibtex/bibtex.mjs'
),
termsOutputPath: path.resolve(
__dirname,
'../../frontend/js/features/source-editor/lezer-bibtex/bibtex.terms.mjs'
),
},
]
function compile(grammar) {
const { grammarPath, termsOutputPath, parserOutputPath } = grammar
const moduleStyle = 'es'
console.info(`Compiling ${grammarPath}`)
const grammarText = readFileSync(grammarPath, 'utf8')
console.info(`Loaded grammar from ${grammarPath}`)
const { parser, terms } = buildParserFile(grammarText, {
fileName: grammarPath,
moduleStyle,
})
console.info(`Built parser`)
writeFileSync(parserOutputPath, parser)
console.info(`Wrote parser to ${parserOutputPath}`)
writeFileSync(termsOutputPath, terms)
console.info(`Wrote terms to ${termsOutputPath}`)
console.info('Done!')
}
module.exports = { compile, grammars }
if (require.main === module) {
try {
grammars.forEach(compile)
process.exit(0)
} catch (err) {
console.error(err)
process.exit(1)
}
}