def p_actions_evolution(p):
'''actions : block
| actions block'''
if len(p) == 2:
p[0] = AST.Actions(series=[p[1]])
else:
p[0] = AST.Actions(series=[p[1], p[2]])
def p_block_evolution(p):
'''block : CURL_BRACKET actions CLOSE_CURL_BRACKET
| action'''
p[0] = AST.Actions(series=[p[1] if len(p) == 2 else p[2]])