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var Promise = require('../utils/promise');
/**
Walk over a list of articles
@param {List<Article>} articles
@param {Function(article)}
@return {Promise}
*/
function walkArticles(articles, fn) {
return Promise.forEach(articles, function(article) {
return Promise(fn(article))
.then(function() {
return walkArticles(article.getArticles(), fn);
});
});
}
/**
Walk over summary and execute "fn" on each article
@param {Summary} summary
@param {Function(article)}
@return {Promise}
*/
function walkSummary(summary, fn) {
var parts = summary.getParts();
return Promise.forEach(parts, function(part) {
return walkArticles(part.getArticles(), fn);
});
}
module.exports = walkSummary;
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