prism-java.js

(function (Prism) {

    var keywords = /\b(?:abstract|assert|boolean|break|byte|case|catch|char|class|const|continue|default|do|double|else|enum|exports|extends|final|finally|float|for|goto|if|implements|import|instanceof|int|interface|long|module|native|new|non-sealed|null|open|opens|package|permits|private|protected|provides|public|record|requires|return|sealed|short|static|strictfp|super|switch|synchronized|this|throw|throws|to|transient|transitive|try|uses|var|void|volatile|while|with|yield)\b/;

    // full package (optional) + parent classes (optional)
    var classNamePrefix = /(^|[^\w.])(?:[a-z]\w*\s*\.\s*)*(?:[A-Z]\w*\s*\.\s*)*/.source;

    // based on the java naming conventions
    var className = {
        pattern: RegExp(classNamePrefix + /[A-Z](?:[\d_A-Z]*[a-z]\w*)?\b/.source),
        lookbehind: true,
        inside: {
            'namespace': {
                pattern: /^[a-z]\w*(?:\s*\.\s*[a-z]\w*)*(?:\s*\.)?/,
                inside: {
                    'punctuation': /\./
                }
            },
            'punctuation': /\./
        }
    };

    Prism.languages.java = Prism.languages.extend('clike', {
        'class-name': [
            className,
            {
                // variables and parameters
                // this to support class names (or generic parameters) which do not contain a lower case letter (also works for methods)
                pattern: RegExp(classNamePrefix + /[A-Z]\w*(?=\s+\w+\s*[;,=())])/.source),
                lookbehind: true,
                inside: className.inside
            }
        ],
        'keyword': keywords,
        'function': [
            Prism.languages.clike.function,
            {
                pattern: /(\:\:\s*)[a-z_]\w*/,
                lookbehind: true
            }
        ],
        'number': /\b0b[01][01_]*L?\b|\b0x(?:\.[\da-f_p+-]+|[\da-f_]+(?:\.[\da-f_p+-]+)?)\b|(?:\b\d[\d_]*(?:\.[\d_]*)?|\B\.\d[\d_]*)(?:e[+-]?\d[\d_]*)?[dfl]?/i,
        'operator': {
            pattern: /(^|[^.])(?:<<=?|>>>?=?|->|--|\+\+|&&|\|\||::|[?:~]|[-+*/%&|^!=<>]=?)/m,
            lookbehind: true
        }
    });

    Prism.languages.insertBefore('java', 'string', {
        'triple-quoted-string': {
            // http://openjdk.java.net/jeps/355#Description
            pattern: /"""[ \t]*[\r\n](?:(?:"|"")?(?:\\.|[^"\\]))*"""/,
            greedy: true,
            alias: 'string'
        }
    });

    Prism.languages.insertBefore('java', 'class-name', {
        'annotation': {
            pattern: /(^|[^.])@\w+(?:\s*\.\s*\w+)*/,
            lookbehind: true,
            alias: 'punctuation'
        },
        'generics': {
            pattern: /<(?:[\w\s,.&?]|<(?:[\w\s,.&?]|<(?:[\w\s,.&?]|<[\w\s,.&?]*>)*>)*>)*>/,
            inside: {
                'class-name': className,
                'keyword': keywords,
                'punctuation': /[<>(),.:]/,
                'operator': /[?&|]/
            }
        },
        'namespace': {
            pattern: RegExp(
                /(\b(?:exports|import(?:\s+static)?|module|open|opens|package|provides|requires|to|transitive|uses|with)\s+)(?!<keyword>)[a-z]\w*(?:\.[a-z]\w*)*\.?/
                    .source.replace(/<keyword>/g, function () { return keywords.source; })),
            lookbehind: true,
            inside: {
                'punctuation': /\./,
            }
        }
    });
}(Prism));