aglio-theme-goose/lib/inherit.js

Custom theme for the Aglio API Blueprint renderer

// Generated by CoffeeScript 2.2.1
(function() {
  // Handle MSON inheritance. This is interesting because certain attributes,
  // items, members, etc can be overridden. For example, the `id` property is
  // overridden to be any valid `string` below:

  // # My Type
  // + id (number)
  // + name (string)

  // # Another Type (My Type)
  // + id (string)

  // Make sure all members are unique, removing all duplicates before the last
  // occurence of the member key name.
  var uniqueMembers,
    hasProp = {}.hasOwnProperty;

  uniqueMembers = function(content) {
    var i, key, known, results;
    known = [];
    i = content.length - 1;
    results = [];
    while (i >= 0) {
      if (content[i].element === 'member') {
        key = content[i].content.key.content;
        if (known.indexOf(key) !== -1) {
          content.splice(i, 1);
          continue;
        }
        known.push(key);
      }
      results.push(i--);
    }
    return results;
  };

  // Have `element` inherit from `base`.
  module.exports = function(base, element) {
    var combined, item, j, key, len, ref, ref1, ref2, ref3, ref4, value;
    // First, we do a deep copy of the base (parent) element
    combined = JSON.parse(JSON.stringify(base));
    // Next, we copy or overwrite any metadata and attributes
    if (element.meta) {
      if (combined.meta == null) {
        combined.meta = {};
      }
      ref = element.meta;
      for (key in ref) {
        if (!hasProp.call(ref, key)) continue;
        value = ref[key];
        combined.meta[key] = value;
      }
    }
    if (element.attributes) {
      if (combined.attributes == null) {
        combined.attributes = {};
      }
      ref1 = element.attributes;
      for (key in ref1) {
        if (!hasProp.call(ref1, key)) continue;
        value = ref1[key];
        combined.attributes[key] = value;
      }
    }
    // Lastly, we combine the content if we can. For simple types, this means
    // overwriting the content. For arrays it adds to the content list and for
    // objects is adds *or* overwrites (if an existing key already exists).
    if (element.content) {
      if (((ref2 = combined.content) != null ? ref2.push : void 0) || ((ref3 = element.content) != null ? ref3.push : void 0)) {
        // This could be an object or array
        if (combined.content == null) {
          combined.content = [];
        }
        ref4 = element.content;
        for (j = 0, len = ref4.length; j < len; j++) {
          item = ref4[j];
          combined.content.push(item);
        }
        if (combined.content.length && combined.content[0].element === 'member') {
          // This is probably an object - remove duplicate keys!
          uniqueMembers(combined.content);
        }
      } else {
        // Not an array or object, just overwrite the content
        combine.content = element.content;
      }
    }
    return combined;
  };

}).call(this);