def clear_grammar_cache(self):
"""
Since grammars are just Python modules, Python will cache them in
`sys.modules` once they've been imported. This function will clear the
cache so changes in grammars can be reloaded.
"""
grammars = utilities.get_grammar_names()
for grammar in grammars:
module = ".".join(["grammars", grammar])
del sys.modules[module]
def load_grammars(self):
"""
Loads each compiled grammar from the subdirectories of the grammars
directory.
"""
grammar_names = utilities.get_grammar_names()
for grammar_name in grammar_names:
module = ".".join(["grammars", grammar_name])
grammar = importlib.import_module(module)
self.grammars[grammar_name] = grammar.grammar
utilities.log("Compiling grammar: '" + grammar_name + "'", verbose=True)
self.compiled_grammars[grammar_name] = globals.Compiler.compile(parser.parse(grammar.grammar))