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

(function (Prism) {

        function literal(str) {
                return function () { return str; };
        }

        var keyword = /\b(?:align|allowzero|and|anyframe|anytype|asm|async|await|break|cancel|catch|comptime|const|continue|defer|else|enum|errdefer|error|export|extern|fn|for|if|inline|linksection|nakedcc|noalias|nosuspend|null|or|orelse|packed|promise|pub|resume|return|stdcallcc|struct|suspend|switch|test|threadlocal|try|undefined|union|unreachable|usingnamespace|var|volatile|while)\b/;

        var IDENTIFIER = '\\b(?!' + keyword.source + ')(?!\\d)\\w+\\b';
        var ALIGN = /align\s*\((?:[^()]|\([^()]*\))*\)/.source;
        var PREFIX_TYPE_OP = /(?:\?|\bpromise->|(?:\[[^[\]]*\]|\*(?!\*)|\*\*)(?:\s*<ALIGN>|\s*const\b|\s*volatile\b|\s*allowzero\b)*)/.source.replace(/<ALIGN>/g, literal(ALIGN));
        var SUFFIX_EXPR = /(?:\bpromise\b|(?:\berror\.)?<ID>(?:\.<ID>)*(?!\s+<ID>))/.source.replace(/<ID>/g, literal(IDENTIFIER));
        var TYPE = '(?!\\s)(?:!?\\s*(?:' + PREFIX_TYPE_OP + '\\s*)*' + SUFFIX_EXPR + ')+';

        /*
         * A simplified grammar for Zig compile time type literals:
         *
         * TypeExpr = ( "!"? PREFIX_TYPE_OP* SUFFIX_EXPR )+
         *
         * SUFFIX_EXPR = ( \b "promise" \b | ( \b "error" "." )? IDENTIFIER ( "." IDENTIFIER )* (?! \s+ IDENTIFIER ) )
         *
         * PREFIX_TYPE_OP = "?"
         *                | \b "promise" "->"
         *                | ( "[" [^\[\]]* "]" | "*" | "**" ) ( ALIGN | "const" \b | "volatile" \b | "allowzero" \b )*
         *
         * ALIGN = "align" "(" ( [^()] | "(" [^()]* ")" )* ")"
         *
         * IDENTIFIER = \b (?! KEYWORD ) [a-zA-Z_] \w* \b
         *
        */

        Prism.languages.zig = {
                'comment': [
                        {
                                pattern: /\/\/[/!].*/,
                                alias: 'doc-comment'
                        },
                        /\/{2}.*/
                ],
                'string': [
                        {
                                // "string" and c"string"
                                pattern: /(^|[^\\@])c?"(?:[^"\\\r\n]|\\.)*"/,
                                lookbehind: true,
                                greedy: true
                        },
                        {
                                // multiline strings and c-strings
                                pattern: /([\r\n])([ \t]+c?\\{2}).*(?:(?:\r\n?|\n)\2.*)*/,
                                lookbehind: true,
                                greedy: true
                        }
                ],
                'char': {
                        // characters 'a', '\n', '\xFF', '\u{10FFFF}'
                        pattern: /(^|[^\\])'(?:[^'\\\r\n]|[\uD800-\uDFFF]{2}|\\(?:.|x[a-fA-F\d]{2}|u\{[a-fA-F\d]{1,6}\}))'/,
                        lookbehind: true,
                        greedy: true
                },
                'builtin': /\B@(?!\d)\w+(?=\s*\()/,
                'label': {
                        pattern: /(\b(?:break|continue)\s*:\s*)\w+\b|\b(?!\d)\w+\b(?=\s*:\s*(?:\{|while\b))/,
                        lookbehind: true
                },
                'class-name': [
                        // const Foo = struct {};
                        /\b(?!\d)\w+(?=\s*=\s*(?:(?:extern|packed)\s+)?(?:enum|struct|union)\s*[({])/,
                        {
                                // const x: i32 = 9;
                                // var x: Bar;
                                // fn foo(x: bool, y: f32) void {}
                                pattern: RegExp(/(:\s*)<TYPE>(?=\s*(?:<ALIGN>\s*)?[=;,)])|<TYPE>(?=\s*(?:<ALIGN>\s*)?\{)/.source.replace(/<TYPE>/g, literal(TYPE)).replace(/<ALIGN>/g, literal(ALIGN))),
                                lookbehind: true,
                                inside: null // see below
                        },
                        {
                                // extern fn foo(x: f64) f64; (optional alignment)
                                pattern: RegExp(/(\)\s*)<TYPE>(?=\s*(?:<ALIGN>\s*)?;)/.source.replace(/<TYPE>/g, literal(TYPE)).replace(/<ALIGN>/g, literal(ALIGN))),
                                lookbehind: true,
                                inside: null // see below
                        }
                ],
                'builtin-type': {
                        pattern: /\b(?:anyerror|bool|c_u?(?:int|long|longlong|short)|c_longdouble|c_void|comptime_(?:float|int)|f(?:16|32|64|128)|[iu](?:8|16|32|64|128|size)|noreturn|type|void)\b/,
                        alias: 'keyword'
                },
                'keyword': keyword,
                'function': /\b(?!\d)\w+(?=\s*\()/,
                'number': /\b(?:0b[01]+|0o[0-7]+|0x[a-fA-F\d]+(?:\.[a-fA-F\d]*)?(?:[pP][+-]?[a-fA-F\d]+)?|\d+(?:\.\d*)?(?:[eE][+-]?\d+)?)\b/,
                'boolean': /\b(?:false|true)\b/,
                'operator': /\.[*?]|\.{2,3}|[-=]>|\*\*|\+\+|\|\||(?:<<|>>|[-+*]%|[-+*/%^&|<>!=])=?|[?~]/,
                'punctuation': /[.:,;(){}[\]]/
        };

        Prism.languages.zig['class-name'].forEach(function (obj) {
                if (obj.inside === null) {
                        obj.inside = Prism.languages.zig;
                }
        });

}(Prism));