Feature/recursive parsing

[drodarie]

Describe the work done

Add recursive configuration file parsing. This will also allow Configuration parsing though different type of parsers. Merge ConfigurationParser and ReferenceConfigurationParser.

NOTE: Configuration file reference path are currently relative to the files instead of the script, but this can be changed

List which issues this resolves:

closes #845

Tasks

• [x] Updated tests

[Helveg]

ConfigurationParser needs to keep this abstract interface:

class ConfigurationParser:
  def parse(): ...
  def generate(): ...

I propose to instead create functional mixin classes that postprocess the return value:

class ParsesReferences:
  def __init_subclass__(cls):
    wrap(cls.parse, cls.parse_references)

class ParsesImports:
  def __init_subclass__(cls):
    wrap(cls.parse, cls.parse_imports)

So developers can:

class MyParser(ParsesRecursively, ConfigurationParser):
  def parse():
    return { "parsed": "value" }

and if the return value contains anything recursive it would be parsed.