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/*
Language: SAS
Author: Mauricio Caceres <mauricio.caceres.bravo@gmail.com>
Description: Syntax Highlighting for SAS
*/
/** @type LanguageFn */
function sas(hljs) {
const regex = hljs.regex;
// Data step and PROC SQL statements
const SAS_KEYWORDS = [
"do",
"if",
"then",
"else",
"end",
"until",
"while",
"abort",
"array",
"attrib",
"by",
"call",
"cards",
"cards4",
"catname",
"continue",
"datalines",
"datalines4",
"delete",
"delim",
"delimiter",
"display",
"dm",
"drop",
"endsas",
"error",
"file",
"filename",
"footnote",
"format",
"goto",
"in",
"infile",
"informat",
"input",
"keep",
"label",
"leave",
"length",
"libname",
"link",
"list",
"lostcard",
"merge",
"missing",
"modify",
"options",
"output",
"out",
"page",
"put",
"redirect",
"remove",
"rename",
"replace",
"retain",
"return",
"select",
"set",
"skip",
"startsas",
"stop",
"title",
"update",
"waitsas",
"where",
"window",
"x|0",
"systask",
"add",
"and",
"alter",
"as",
"cascade",
"check",
"create",
"delete",
"describe",
"distinct",
"drop",
"foreign",
"from",
"group",
"having",
"index",
"insert",
"into",
"in",
"key",
"like",
"message",
"modify",
"msgtype",
"not",
"null",
"on",
"or",
"order",
"primary",
"references",
"reset",
"restrict",
"select",
"set",
"table",
"unique",
"update",
"validate",
"view",
"where"
];
// Built-in SAS functions
const FUNCTIONS = [
"abs",
"addr",
"airy",
"arcos",
"arsin",
"atan",
"attrc",
"attrn",
"band",
"betainv",
"blshift",
"bnot",
"bor",
"brshift",
"bxor",
"byte",
"cdf",
"ceil",
"cexist",
"cinv",
"close",
"cnonct",
"collate",
"compbl",
"compound",
"compress",
"cos",
"cosh",
"css",
"curobs",
"cv",
"daccdb",
"daccdbsl",
"daccsl",
"daccsyd",
"dacctab",
"dairy",
"date",
"datejul",
"datepart",
"datetime",
"day",
"dclose",
"depdb",
"depdbsl",
"depdbsl",
"depsl",
"depsl",
"depsyd",
"depsyd",
"deptab",
"deptab",
"dequote",
"dhms",
"dif",
"digamma",
"dim",
"dinfo",
"dnum",
"dopen",
"doptname",
"doptnum",
"dread",
"dropnote",
"dsname",
"erf",
"erfc",
"exist",
"exp",
"fappend",
"fclose",
"fcol",
"fdelete",
"fetch",
"fetchobs",
"fexist",
"fget",
"fileexist",
"filename",
"fileref",
"finfo",
"finv",
"fipname",
"fipnamel",
"fipstate",
"floor",
"fnonct",
"fnote",
"fopen",
"foptname",
"foptnum",
"fpoint",
"fpos",
"fput",
"fread",
"frewind",
"frlen",
"fsep",
"fuzz",
"fwrite",
"gaminv",
"gamma",
"getoption",
"getvarc",
"getvarn",
"hbound",
"hms",
"hosthelp",
"hour",
"ibessel",
"index",
"indexc",
"indexw",
"input",
"inputc",
"inputn",
"int",
"intck",
"intnx",
"intrr",
"irr",
"jbessel",
"juldate",
"kurtosis",
"lag",
"lbound",
"left",
"length",
"lgamma",
"libname",
"libref",
"log",
"log10",
"log2",
"logpdf",
"logpmf",
"logsdf",
"lowcase",
"max",
"mdy",
"mean",
"min",
"minute",
"mod",
"month",
"mopen",
"mort",
"n",
"netpv",
"nmiss",
"normal",
"note",
"npv",
"open",
"ordinal",
"pathname",
"pdf",
"peek",
"peekc",
"pmf",
"point",
"poisson",
"poke",
"probbeta",
"probbnml",
"probchi",
"probf",
"probgam",
"probhypr",
"probit",
"probnegb",
"probnorm",
"probt",
"put",
"putc",
"putn",
"qtr",
"quote",
"ranbin",
"rancau",
"ranexp",
"rangam",
"range",
"rank",
"rannor",
"ranpoi",
"rantbl",
"rantri",
"ranuni",
"repeat",
"resolve",
"reverse",
"rewind",
"right",
"round",
"saving",
"scan",
"sdf",
"second",
"sign",
"sin",
"sinh",
"skewness",
"soundex",
"spedis",
"sqrt",
"std",
"stderr",
"stfips",
"stname",
"stnamel",
"substr",
"sum",
"symget",
"sysget",
"sysmsg",
"sysprod",
"sysrc",
"system",
"tan",
"tanh",
"time",
"timepart",
"tinv",
"tnonct",
"today",
"translate",
"tranwrd",
"trigamma",
"trim",
"trimn",
"trunc",
"uniform",
"upcase",
"uss",
"var",
"varfmt",
"varinfmt",
"varlabel",
"varlen",
"varname",
"varnum",
"varray",
"varrayx",
"vartype",
"verify",
"vformat",
"vformatd",
"vformatdx",
"vformatn",
"vformatnx",
"vformatw",
"vformatwx",
"vformatx",
"vinarray",
"vinarrayx",
"vinformat",
"vinformatd",
"vinformatdx",
"vinformatn",
"vinformatnx",
"vinformatw",
"vinformatwx",
"vinformatx",
"vlabel",
"vlabelx",
"vlength",
"vlengthx",
"vname",
"vnamex",
"vtype",
"vtypex",
"weekday",
"year",
"yyq",
"zipfips",
"zipname",
"zipnamel",
"zipstate"
];
// Built-in macro functions
const MACRO_FUNCTIONS = [
"bquote",
"nrbquote",
"cmpres",
"qcmpres",
"compstor",
"datatyp",
"display",
"do",
"else",
"end",
"eval",
"global",
"goto",
"if",
"index",
"input",
"keydef",
"label",
"left",
"length",
"let",
"local",
"lowcase",
"macro",
"mend",
"nrbquote",
"nrquote",
"nrstr",
"put",
"qcmpres",
"qleft",
"qlowcase",
"qscan",
"qsubstr",
"qsysfunc",
"qtrim",
"quote",
"qupcase",
"scan",
"str",
"substr",
"superq",
"syscall",
"sysevalf",
"sysexec",
"sysfunc",
"sysget",
"syslput",
"sysprod",
"sysrc",
"sysrput",
"then",
"to",
"trim",
"unquote",
"until",
"upcase",
"verify",
"while",
"window"
];
const LITERALS = [
"null",
"missing",
"_all_",
"_automatic_",
"_character_",
"_infile_",
"_n_",
"_name_",
"_null_",
"_numeric_",
"_user_",
"_webout_"
];
return {
name: 'SAS',
case_insensitive: true,
keywords: {
literal: LITERALS,
keyword: SAS_KEYWORDS
},
contains: [
{
// Distinct highlight for proc <proc>, data, run, quit
className: 'keyword',
begin: /^\s*(proc [\w\d_]+|data|run|quit)[\s;]/
},
{
// Macro variables
className: 'variable',
begin: /&[a-zA-Z_&][a-zA-Z0-9_]*\.?/
},
{
begin: [
/^\s*/,
/datalines;|cards;/,
/(?:.*\n)+/,
/^\s*;\s*$/
],
className: {
2: "keyword",
3: "string"
}
},
{
begin: [
/%mend|%macro/,
/\s+/,
/[a-zA-Z_&][a-zA-Z0-9_]*/
],
className: {
1: "built_in",
3: "title.function"
}
},
{ // Built-in macro variables
className: 'built_in',
begin: '%' + regex.either(...MACRO_FUNCTIONS)
},
{
// User-defined macro functions
className: 'title.function',
begin: /%[a-zA-Z_][a-zA-Z_0-9]*/
},
{
// TODO: this is most likely an incorrect classification
// built_in may need more nuance
// https://github.com/highlightjs/highlight.js/issues/2521
className: 'meta',
begin: regex.either(...FUNCTIONS) + '(?=\\()'
},
{
className: 'string',
variants: [
hljs.APOS_STRING_MODE,
hljs.QUOTE_STRING_MODE
]
},
hljs.COMMENT('\\*', ';'),
hljs.C_BLOCK_COMMENT_MODE
]
};
}
module.exports = sas;

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