source: node_modules/prismjs/components/prism-mata.js

// https://www.stata.com/manuals/m.pdf

(function (Prism) {

        var orgType = /\b(?:(?:col|row)?vector|matrix|scalar)\b/.source;
        var type = /\bvoid\b|<org>|\b(?:complex|numeric|pointer(?:\s*\([^()]*\))?|real|string|(?:class|struct)\s+\w+|transmorphic)(?:\s*<org>)?/.source
                .replace(/<org>/g, orgType);

        Prism.languages.mata = {
                'comment': {
                        pattern: /\/\/.*|\/\*(?:[^*/]|\*(?!\/)|\/(?!\*)|\/\*(?:[^*]|\*(?!\/))*\*\/)*\*\//,
                        greedy: true
                },
                'string': {
                        pattern: /"[^"\r\n]*"|[‘`']".*?"[’`']/,
                        greedy: true
                },

                'class-name': {
                        pattern: /(\b(?:class|extends|struct)\s+)\w+(?=\s*(?:\{|\bextends\b))/,
                        lookbehind: true
                },
                'type': {
                        pattern: RegExp(type),
                        alias: 'class-name',
                        inside: {
                                'punctuation': /[()]/,
                                'keyword': /\b(?:class|function|struct|void)\b/
                        }
                },
                'keyword': /\b(?:break|class|continue|do|else|end|extends|external|final|for|function|goto|if|pragma|private|protected|public|return|static|struct|unset|unused|version|virtual|while)\b/,
                'constant': /\bNULL\b/,

                'number': {
                        pattern: /(^|[^\w.])(?:\d+(?:\.\d+)?(?:e[+-]?\d+)?|\d[a-f0-9]*(?:\.[a-f0-9]+)?x[+-]?\d+)i?(?![\w.])/i,
                        lookbehind: true
                },
                'missing': {
                        pattern: /(^|[^\w.])(?:\.[a-z]?)(?![\w.])/,
                        lookbehind: true,
                        alias: 'symbol'
                },

                'function': /\b[a-z_]\w*(?=\s*\()/i,

                'operator': /\.\.|\+\+|--|&&|\|\||:?(?:[!=<>]=|[+\-*/^<>&|:])|[!?=\\#’`']/,
                'punctuation': /[()[\]{},;.]/
        };

}(Prism));