lara

#!/bin/python
import sys

from langtools.lexer.lexer import tokenize
from langtools.parser.cfg import CFG

from src.config.lexer import TOKENIZER
from src.config.parser import PRODUCTION_RULES, START
from src.eval import Evaluator

num_args = len(sys.argv)

if num_args > 1:
    tokens = tokenize(open(sys.argv[1]), TOKENIZER, white_space_delimit=True)
    lara_grammar = CFG(
        production_rules=PRODUCTION_RULES,
        alphabet=[chr(i) for i in range(128)],
        start_symbol=START,
    )
    ast = lara_grammar.LL1_parse(tokens)
    ast.flatten(
        {
            "STATEMENTS": {"STATEMENTS"},
            "ARGUMENTS": {"ANOTHER_ARGUMENT", "ARGUMENTS"},
            "ANOTHER_ARGUMENT": {"ARGUMENTS"},
            "ARGUMENTS_DEF": {"ANOTHER_ARGUMENT_DEF", "ARGUMENTS_DEF"},
            "ANOTHER_ARGUMENT_DEF": {"ARGUMENTS_DEF"},
            "IF_BLOCK": {"IF_BLOCK_CONTINUE"},
            # "EXPRESSION": {"TERM_OPERATOR"},
        }
    )
    evaluator = Evaluator(ast)
    evaluator.evaluate()