def _process_scalar_value(name, parse_fn, var_type, m_dict, values, results_dictionary):
    """Update results_dictionary with a scalar value.

    Used to update the results_dictionary to be returned by parse_values when
    encountering a clause with a scalar RHS (e.g.  "s=5" or "arr[0]=5".)

    Mutates results_dictionary.

    Args:
      name: Name of variable in assignment ("s" or "arr").
      parse_fn: Function for parsing the actual value.
      var_type: Type of named variable.
      m_dict: Dictionary constructed from regex parsing.
        m_dict['val']: RHS value (scalar)
        m_dict['index']: List index value (or None)
      values: Full expression being parsed
      results_dictionary: The dictionary being updated for return by the parsing
        function.

    Raises:
      ValueError: If the name has already been used.
    """
    try:
        parsed_value = parse_fn(m_dict["val"])
    except ValueError:
        _parse_fail(name, var_type, m_dict["val"], values)

    # If no index is provided
    if not m_dict["index"]:
        if name in results_dictionary:
            _reuse_fail(name, values)
        results_dictionary[name] = parsed_value
    else:
        if name in results_dictionary:
            # The name has already been used as a scalar, then it
            # will be in this dictionary and map to a non-dictionary.
            if not isinstance(results_dictionary.get(name), dict):
                _reuse_fail(name, values)
        else:
            results_dictionary[name] = {}

        index = int(m_dict["index"])
        # Make sure the index position hasn't already been assigned a value.
        if index in results_dictionary[name]:
            _reuse_fail("{}[{}]".format(name, index), values)
        results_dictionary[name][index] = parsed_value
Update results_dictionary with a scalar value.

Used to update the results_dictionary to be returned by parse_values when
encountering a clause with a scalar RHS (e.g.  "s=5" or "arr[0]=5".)

Mutates results_dictionary.

Args:
name: Name of variable in assignment ("s" or "arr").
parse_fn: Function for parsing the actual value.
var_type: Type of named variable.
m_dict: Dictionary constructed from regex parsing.
m_dict['val']: RHS value (scalar)
m_dict['index']: List index value (or None)
values: Full expression being parsed
results_dictionary: The dictionary being updated for return by the parsing
function.

Raises:
ValueError: If the name has already been used.
utils/hparam.py