function dump_any()

in watchman/node/bser/index.js [497:567]

• 69 lines of code
• 18 McCabe index (conditional complexity)

function dump_any(buf, val) {
  switch (typeof(val)) {
    case 'number':
      // check if it is an integer or a float
      if (isFinite(val) && Math.floor(val) === val) {
        dump_int(buf, val);
      } else {
        buf.writeByte(BSER_REAL);
        buf.writeDouble(val);
      }
      return;
    case 'string':
      buf.writeByte(BSER_STRING);
      dump_int(buf, Buffer.byteLength(val));
      buf.append(val);
      return;
    case 'boolean':
      buf.writeByte(val ? BSER_TRUE : BSER_FALSE);
      return;
    case 'object':
      if (val === null) {
        buf.writeByte(BSER_NULL);
        return;
      }
      if (val instanceof Int64) {
        dump_int64(buf, val);
        return;
      }
      if (Array.isArray(val)) {
        buf.writeByte(BSER_ARRAY);
        dump_int(buf, val.length);
        for (var i = 0; i < val.length; ++i) {
          dump_any(buf, val[i]);
        }
        return;
      }
      buf.writeByte(BSER_OBJECT);
      var keys = Object.keys(val);

      // First pass to compute number of defined keys
      var num_keys = keys.length;
      for (var i = 0; i < keys.length; ++i) {
        var key = keys[i];
        var v = val[key];
        if (typeof(v) == 'undefined') {
          num_keys--;
        }
      }
      dump_int(buf, num_keys);
      for (var i = 0; i < keys.length; ++i) {
        var key = keys[i];
        var v = val[key];
        if (typeof(v) == 'undefined') {
          // Don't include it
          continue;
        }
        dump_any(buf, key);
        try {
          dump_any(buf, v);
        } catch (e) {
          throw new Error(
            e.message + ' (while serializing object property with name `' +
              key + "')");
        }
      }
      return;

    default:
      throw new Error('cannot serialize type ' + typeof(val) + ' to BSER');
  }
}