jade -> json trees

gistfile1.js

var _ = require('underscore'),
  Parser = require('jade/lib/parser');

module.exports = {
  toJSON: toJSON,
  fromJSON: fromJSON
}

function toJSON(src, options) {
  var parser = new Parser(src),
    parsed = parser.parse(),
    compiled = _.map(parsed.nodes, compile);

  return compiled;
}

function fromJSON(o) {
  return decompile(o);
}

function compile(node) {
  if (node.val) {
    return {
      type: 'text',
      props: {
        value: node.val
      }
    };
  }
  var o = {
    type: node.name,
    props: _.reduce(node.attrs, (o, a) => {
      o[a.name] = eval('(' + a.val + ')');
      return o;
    }, {}),
  }

  if (node.block && node.block.nodes && node.block.nodes.length > 0) {
    o.children = _.map(node.block.nodes, compile);
  }
  return o;

}

function tabs(n) {
  return new Array(n + 1).join('  ');
}

function decompile(node, depth) {
  depth = depth || 0;
  var str = tabs(depth);
  if (node.type === 'text') {
    str += '| ' + node.props.value
    return str;
  }
  str += node.type + (node.props ? ('(' + _.map(node.props, (v, k) => k + '=' + JSON.stringify(v)).join(' ') + ')') : '') + '\n';
  if (node.children) {
    str += _.map(node.children, c => decompile(c, depth + 1)).join('')
  }
  return str;

}