return function(node, nodes, i) {
var opts = extend({}, this.options, options);
var replaceRe = /(?:lang(uage)?|highlight|source|brush:\s*)[-]?| /g;
var testRe = /(?:lang(uage)?|highlight|source|brush:\s*)/;
var code = opts.literalPre;
if (!code && !util.hasType(node, 'code')) {
code = true;
}
if (code) {
node.lang = (node.attr && node.attr['data-lang']) || '';
var attribs = node.attribs;
if (!node.lang && attribs && attribs.class) {
var cls = attribs.class;
if (cls && testRe.test(cls)) {
node.lang = cls.replace(replaceRe, '');
}
}
var parent = node.parent || {};
if (!node.lang && parent && parent.attribs) {
cls = parent.attribs.class;
if (cls && testRe.test(cls)) {
node.lang = cls.replace(replaceRe, '');
}
}
if (!node.lang && /<[^>]+>/.test(node.text)) {
return this.emit(node.outer, node);
}
this.emit('\n\n```', node);
this.emit(node.lang);
this.emit(code ? node.html : node.text, node);
this.emit('```\n\n', node);
} else if (/<pre\s*[^>]*><(?!code)[^>]+>/.test(node.outer)) {
this.emit(node.outer, node);
} else if (node.nodes) {
this.mapVisit(node);
}
};
Node.prototype.hasType = function(type) {
return utils.hasType(this, type);
};