source: node_modules/prismjs/components/prism-plant-uml.js

(function (Prism) {
        var variable = /\$\w+|%[a-z]+%/;

        var arrowAttr = /\[[^[\]]*\]/.source;
        var arrowDirection = /(?:[drlu]|do|down|le|left|ri|right|up)/.source;
        var arrowBody = '(?:-+' + arrowDirection + '-+|\\.+' + arrowDirection + '\\.+|-+(?:' + arrowAttr + '-*)?|' + arrowAttr + '-+|\\.+(?:' + arrowAttr + '\\.*)?|' + arrowAttr + '\\.+)';
        var arrowLeft = /(?:<{1,2}|\/{1,2}|\\{1,2}|<\||[#*^+}xo])/.source;
        var arrowRight = /(?:>{1,2}|\/{1,2}|\\{1,2}|\|>|[#*^+{xo])/.source;
        var arrowPrefix = /[[?]?[ox]?/.source;
        var arrowSuffix = /[ox]?[\]?]?/.source;
        var arrow =
                arrowPrefix +
                '(?:' +
                arrowBody + arrowRight +
                '|' +
                arrowLeft + arrowBody + '(?:' + arrowRight + ')?' +
                ')' +
                arrowSuffix;

        Prism.languages['plant-uml'] = {
                'comment': {
                        pattern: /(^[ \t]*)(?:'.*|\/'[\s\S]*?'\/)/m,
                        lookbehind: true,
                        greedy: true
                },
                'preprocessor': {
                        pattern: /(^[ \t]*)!.*/m,
                        lookbehind: true,
                        greedy: true,
                        alias: 'property',
                        inside: {
                                'variable': variable
                        }
                },
                'delimiter': {
                        pattern: /(^[ \t]*)@(?:end|start)uml\b/m,
                        lookbehind: true,
                        greedy: true,
                        alias: 'punctuation'
                },

                'arrow': {
                        pattern: RegExp(/(^|[^-.<>?|\\[\]ox])/.source + arrow + /(?![-.<>?|\\\]ox])/.source),
                        lookbehind: true,
                        greedy: true,
                        alias: 'operator',
                        inside: {
                                'expression': {
                                        pattern: /(\[)[^[\]]+(?=\])/,
                                        lookbehind: true,
                                        inside: null // see below
                                },
                                'punctuation': /\[(?=$|\])|^\]/
                        }
                },

                'string': {
                        pattern: /"[^"]*"/,
                        greedy: true
                },
                'text': {
                        pattern: /(\[[ \t]*[\r\n]+(?![\r\n]))[^\]]*(?=\])/,
                        lookbehind: true,
                        greedy: true,
                        alias: 'string'
                },

                'keyword': [
                        {
                                pattern: /^([ \t]*)(?:abstract\s+class|end\s+(?:box|fork|group|merge|note|ref|split|title)|(?:fork|split)(?:\s+again)?|activate|actor|agent|alt|annotation|artifact|autoactivate|autonumber|backward|binary|boundary|box|break|caption|card|case|circle|class|clock|cloud|collections|component|concise|control|create|critical|database|deactivate|destroy|detach|diamond|else|elseif|end|end[hr]note|endif|endswitch|endwhile|entity|enum|file|folder|footer|frame|group|[hr]?note|header|hexagon|hide|if|interface|label|legend|loop|map|namespace|network|newpage|node|nwdiag|object|opt|package|page|par|participant|person|queue|rectangle|ref|remove|repeat|restore|return|robust|scale|set|show|skinparam|stack|start|state|stop|storage|switch|title|together|usecase|usecase\/|while)(?=\s|$)/m,
                                lookbehind: true,
                                greedy: true
                        },
                        /\b(?:elseif|equals|not|while)(?=\s*\()/,
                        /\b(?:as|is|then)\b/
                ],

                'divider': {
                        pattern: /^==.+==$/m,
                        greedy: true,
                        alias: 'important'
                },

                'time': {
                        pattern: /@(?:\d+(?:[:/]\d+){2}|[+-]?\d+|:[a-z]\w*(?:[+-]\d+)?)\b/i,
                        greedy: true,
                        alias: 'number'
                },

                'color': {
                        pattern: /#(?:[a-z_]+|[a-fA-F0-9]+)\b/,
                        alias: 'symbol'
                },
                'variable': variable,

                'punctuation': /[:,;()[\]{}]|\.{3}/
        };

        Prism.languages['plant-uml'].arrow.inside.expression.inside = Prism.languages['plant-uml'];

        Prism.languages['plantuml'] = Prism.languages['plant-uml'];

}(Prism));