clown/lib/traverse.js

clown computing with pkgcloud

var joi = require('joi'),
    traverse = require('traverse');

module.exports = function traverser(schema, visitor) {
  traverse(joi.compile(schema)).forEach(function(node) {
    if (node && node.isJoi) {
      var self = this,
          ctx = {},
          parent = self.parent || {};

      ctx.node = self.node;
      ctx.path = self.path.filter(function(p) { return p !== '_inner'; });
      ctx.parent = parent.parent;
      ctx.key = parent.key;
      ctx.isRoot = self.isRoot;
      ctx.notRoot = self.notRoot;
      ctx.isLeaf = !Object.keys(node._inner || {}).length;
      ctx.notLeaf = !ctx.isLeaf;
      ctx.level = Math.floor(self.level / 2);
      ctx.update = self.update.bind(self);
      ctx.remove = self.remove.bind(self);
      ctx.delete = self.remove.bind(self);

      visitor.call(ctx, node.describe());
    }
  });
};