treebank-parser/lib/json-utils.js

A simple parser for treebanks stored in S-Expressions

exports.get_node = function(tree, properties) {
  var node = tree;

  for (var i=0; i<properties.length; i++) {
    node = node[properties[i]];
  }

  return node;
};

exports.set_tree_value = function(tree, properties, value) {
  var property = properties[properties.length-1];
  var node = exports.get_node(tree, properties.slice(0, properties.length-1));

  node[property] = value;
};

exports.get_property_name_for_duplicate = function(node, property_name) {
  var property_count = 0, match_regexp = new RegExp('^' + property_name + '_\\d+$');

  for (var property in node) {
    if (node.hasOwnProperty(property) && match_regexp.exec(property)) {
      property_count++;
    }
  }

  var new_property_name = property_name + '_' + property_count;
  return new_property_name;
};

exports.strip_duplicate_indicator = function(property_name) {
  var stripped_property_name = property_name.replace(/_\d+$/, '');
  return stripped_property_name;
};