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These are\n // handled in a separate mode. See `test/markup/r/names.txt` for examples.\n // FIXME: Support Unicode identifiers.\n const IDENT_RE = /(?:(?:[a-zA-Z]|\\.[._a-zA-Z])[._a-zA-Z0-9]*)|\\.(?!\\d)/;\n const SIMPLE_IDENT = /[a-zA-Z][a-zA-Z_0-9]*/;\n\n return {\n name: 'R',\n\n // only in Haskell, not R\n illegal: /->/,\n keywords: {\n $pattern: IDENT_RE,\n keyword:\n 'function if in break next repeat else for while',\n literal:\n 'NULL NA TRUE FALSE Inf NaN NA_integer_|10 NA_real_|10 ' +\n 'NA_character_|10 NA_complex_|10',\n built_in:\n // Builtin constants\n 'LETTERS letters month.abb month.name pi T F ' +\n // Primitive functions\n // These are all the functions in `base` that are implemented as a\n // `.Primitive`, minus those functions that are also keywords.\n 'abs acos acosh all any anyNA Arg as.call as.character ' +\n 'as.complex as.double as.environment as.integer as.logical ' +\n 'as.null.default as.numeric as.raw asin asinh atan atanh attr ' +\n 'attributes baseenv browser c call ceiling class Conj cos cosh ' +\n 'cospi cummax cummin cumprod cumsum digamma dim dimnames ' +\n 'emptyenv exp expression floor forceAndCall gamma gc.time ' +\n 'globalenv Im interactive invisible is.array is.atomic is.call ' +\n 'is.character is.complex is.double is.environment is.expression ' +\n 'is.finite is.function is.infinite is.integer is.language ' +\n 'is.list is.logical is.matrix is.na is.name is.nan is.null ' +\n 'is.numeric is.object is.pairlist is.raw is.recursive is.single ' +\n 'is.symbol lazyLoadDBfetch length lgamma list log max min ' +\n 'missing Mod names nargs nzchar oldClass on.exit pos.to.env ' +\n 'proc.time prod quote range Re rep retracemem return round ' +\n 'seq_along seq_len seq.int sign signif sin sinh sinpi sqrt ' +\n 'standardGeneric substitute sum switch tan tanh tanpi tracemem ' +\n 'trigamma trunc unclass untracemem UseMethod xtfrm',\n },\n\n contains: [\n // Roxygen comments\n hljs.COMMENT(\n /#'/,\n /$/,\n {\n contains: [\n {\n // Handle `@examples` separately to cause all subsequent code\n // until the next `@`-tag on its own line to be kept as-is,\n // preventing highlighting. This code is example R code, so nested\n // doctags shouldn’t be treated as such. See\n // `test/markup/r/roxygen.txt` for an example.\n className: 'doctag',\n begin: '@examples',\n starts: {\n contains: [\n { begin: /\\n/ },\n {\n begin: /#'\\s*(?=@[a-zA-Z]+)/,\n endsParent: true,\n },\n {\n begin: /#'/,\n end: /$/,\n excludeBegin: true,\n }\n ]\n }\n },\n {\n // Handle `@param` to highlight the parameter name following\n // after.\n className: 'doctag',\n begin: '@param',\n end: /$/,\n contains: [\n {\n className: 'variable',\n variants: [\n { begin: IDENT_RE },\n { begin: /`(?:\\\\.|[^`\\\\])+`/ }\n ],\n endsParent: true\n }\n ]\n },\n {\n className: 'doctag',\n begin: /@[a-zA-Z]+/\n },\n {\n className: 'meta-keyword',\n begin: /\\\\[a-zA-Z]+/,\n }\n ]\n }\n ),\n\n hljs.HASH_COMMENT_MODE,\n\n {\n className: 'string',\n contains: [hljs.BACKSLASH_ESCAPE],\n variants: [\n hljs.END_SAME_AS_BEGIN({ begin: /[rR]\"(-*)\\(/, end: /\\)(-*)\"/ }),\n hljs.END_SAME_AS_BEGIN({ begin: /[rR]\"(-*)\\{/, end: /\\}(-*)\"/ }),\n hljs.END_SAME_AS_BEGIN({ begin: /[rR]\"(-*)\\[/, end: /\\](-*)\"/ }),\n hljs.END_SAME_AS_BEGIN({ begin: /[rR]'(-*)\\(/, end: /\\)(-*)'/ }),\n hljs.END_SAME_AS_BEGIN({ begin: /[rR]'(-*)\\{/, end: /\\}(-*)'/ }),\n hljs.END_SAME_AS_BEGIN({ begin: /[rR]'(-*)\\[/, end: /\\](-*)'/ }),\n {begin: '\"', end: '\"', relevance: 0},\n {begin: \"'\", end: \"'\", relevance: 0}\n ],\n },\n {\n className: 'number',\n variants: [\n // TODO: replace with negative look-behind when available\n // { begin: /(?<![a-zA-Z0-9._])0[xX][0-9a-fA-F]+\\.[0-9a-fA-F]*[pP][+-]?\\d+i?/ },\n // { begin: /(?<![a-zA-Z0-9._])0[xX][0-9a-fA-F]+([pP][+-]?\\d+)?[Li]?/ },\n // { begin: /(?<![a-zA-Z0-9._])(\\d+(\\.\\d*)?|\\.\\d+)([eE][+-]?\\d+)?[Li]?/ }\n\n // The below rules all eat an extra character in front (for the\n // look-behind check) and then exclude it from the match, but I think\n // in many cases this will work out just fine.\n {\n // Special case: only hexadecimal binary powers can contain fractions.\n begin: /([^a-zA-Z0-9._])(?=0[xX][0-9a-fA-F]+\\.[0-9a-fA-F]*[pP][+-]?\\d+i?)/,\n end: /0[xX][0-9a-fA-F]+\\.[0-9a-fA-F]*[pP][+-]?\\d+i?/,\n excludeBegin: true\n },\n {\n begin: /([^a-zA-Z0-9._])(?=0[xX][0-9a-fA-F]+([pP][+-]?\\d+)?[Li]?)/,\n end: /0[xX][0-9a-fA-F]+([pP][+-]?\\d+)?[Li]?/ ,\n excludeBegin: true\n },\n {\n begin: /([^a-zA-Z0-9._])(?=(\\d+(\\.\\d*)?|\\.\\d+)([eE][+-]?\\d+)?[Li]?)/,\n end: /(\\d+(\\.\\d*)?|\\.\\d+)([eE][+-]?\\d+)?[Li]?/,\n excludeBegin: true\n }\n ],\n // \"on:begin\": (match, response) => {\n // if (match.index > 0) {\n // let priorChar = match.input[match.index - 1];\n // if (priorChar.match(/[a-zA-Z0-9._]/)) response.ignoreMatch();\n // }\n // },\n relevance: 0\n },\n\n {\n // infix operator\n begin: '%',\n end: '%'\n },\n // relevance boost for assignment\n {\n begin: concat(SIMPLE_IDENT, \"\\\\s+<-\\\\s+\")\n },\n {\n // escaped identifier\n begin: '`',\n end: '`',\n contains: [\n { begin: /\\\\./ }\n ]\n }\n ]\n };\n}\n\nmodule.exports = r;\n"],"sourceRoot":""}
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