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(function (Prism) {
// https://mc-stan.org/docs/2_28/reference-manual/bnf-grammars.html
var higherOrderFunctions =
/\b(?:algebra_solver|algebra_solver_newton|integrate_1d|integrate_ode|integrate_ode_bdf|integrate_ode_rk45|map_rect|ode_(?:adams|bdf|ckrk|rk45)(?:_tol)?|ode_adjoint_tol_ctl|reduce_sum|reduce_sum_static)\b/;
Prism.languages.stan = {
comment: /\/\/.*|\/\*[\s\S]*?\*\/|#(?!include).*/,
string: {
// String literals can contain spaces and any printable ASCII characters except for " and \
// https://mc-stan.org/docs/2_24/reference-manual/print-statements-section.html#string-literals
pattern: /"[\x20\x21\x23-\x5B\x5D-\x7E]*"/,
greedy: true,
},
directive: {
pattern: /^([ \t]*)#include\b.*/m,
lookbehind: true,
alias: 'property',
},
'function-arg': {
pattern: RegExp(
'(' +
higherOrderFunctions.source +
/\s*\(\s*/.source +
')' +
/[a-zA-Z]\w*/.source
),
lookbehind: true,
alias: 'function',
},
constraint: {
pattern: /(\b(?:int|matrix|real|row_vector|vector)\s*)<[^<>]*>/,
lookbehind: true,
inside: {
expression: {
pattern: /(=\s*)\S(?:\S|\s+(?!\s))*?(?=\s*(?:>$|,\s*\w+\s*=))/,
lookbehind: true,
inside: null, // see below
},
property: /\b[a-z]\w*(?=\s*=)/i,
operator: /=/,
punctuation: /^<|>$|,/,
},
},
keyword: [
{
pattern:
/\bdata(?=\s*\{)|\b(?:functions|generated|model|parameters|quantities|transformed)\b/,
alias: 'program-block',
},
/\b(?:array|break|cholesky_factor_corr|cholesky_factor_cov|complex|continue|corr_matrix|cov_matrix|data|else|for|if|in|increment_log_prob|int|matrix|ordered|positive_ordered|print|real|reject|return|row_vector|simplex|target|unit_vector|vector|void|while)\b/,
// these are functions that are known to take another function as their first argument.
higherOrderFunctions,
],
function: /\b[a-z]\w*(?=\s*\()/i,
number:
/(?:\b\d+(?:_\d+)*(?:\.(?:\d+(?:_\d+)*)?)?|\B\.\d+(?:_\d+)*)(?:E[+-]?\d+(?:_\d+)*)?i?(?!\w)/i,
boolean: /\b(?:false|true)\b/,
operator: /<-|\.[*/]=?|\|\|?|&&|[!=<>+\-*/]=?|['^%~?:]/,
punctuation: /[()\[\]{},;]/,
};
Prism.languages.stan.constraint.inside.expression.inside =
Prism.languages.stan;
})(Prism);
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