WIP - add extractor, generate snippet_data

node_modules/mdast-util-toc/lib/insert.js

@@ -0,0 +1,108 @@
+/**
+ * @author Titus Wormer
+ * @copyright 2015 Titus Wormer
+ * @license MIT
+ * @module mdast:toc
+ * @fileoverview Generate a Table of Contents (TOC) from a given Markdown file.
+ */
+
+/* Expose. */
+module.exports = insert;
+
+/* Dependencies */
+var listItem = require('./list-item');
+var list = require('./list');
+
+/* Constants */
+var LIST = 'list';
+var LIST_ITEM = 'listItem';
+var PARAGRAPH = 'paragraph';
+var LINK = 'link';
+var TEXT = 'text';
+
+/**
+ * Insert a `node` into a `parent`.
+ *
+ * @param {Object} node - `node` to insert.
+ * @param {Object} parent - Parent of `node`.
+ * @param {boolean?} [tight] - Prefer tight list-items.
+ * @return {undefined}
+ */
+function insert(node, parent, tight) {
+    var children = parent.children;
+    var length = children.length;
+    var last = children[length - 1];
+    var isLoose = false;
+    var index;
+    var item;
+
+    if (node.depth === 1) {
+        item = listItem();
+
+        item.children.push({
+            type: PARAGRAPH,
+            children: [
+                {
+                    type: LINK,
+                    title: null,
+                    url: '#' + node.id,
+                    children: [
+                        {
+                            type: TEXT,
+                            value: node.value
+                        }
+                    ]
+                }
+            ]
+        });
+
+        children.push(item);
+    } else if (last && last.type === LIST_ITEM) {
+        insert(node, last, tight);
+    } else if (last && last.type === LIST) {
+        node.depth--;
+
+        insert(node, last, tight);
+    } else if (parent.type === LIST) {
+        item = listItem();
+
+        insert(node, item, tight);
+
+        children.push(item);
+    } else {
+        item = list();
+        node.depth--;
+
+        insert(node, item, tight);
+
+        children.push(item);
+    }
+
+    /*
+    * Properly style list-items with new lines.
+    */
+
+    if (parent.type === LIST_ITEM) {
+        parent.loose = tight ? false : children.length > 1;
+    } else {
+        if (tight) {
+            isLoose = false;
+        } else {
+            index = -1;
+
+            while (++index < length) {
+                if (children[index].loose) {
+                    isLoose = true;
+
+                    break;
+                }
+            }
+        }
+
+        index = -1;
+
+        while (++index < length) {
+            children[index].loose = isLoose;
+        }
+    }
+}