from collections import defaultdict

data = open('./grammar.txt').read().split()

productions = defaultdict(lambda: [])


def recurse(prod):
    prods = []
    if prod not in productions.keys():
        prods.append(prod)
    else:
        for p in productions[prod]:
            if len(p):
                prods += recurse(p[0])

    return prods


while len(data):
    name = data.pop(0)
    data.pop(0)  # ->

    symbols = []
    while True:
        symbol = data.pop(0)
        if symbol == '.':
            productions[name].append(symbols)
            break
        if symbol == '|':
            productions[name].append(symbols)
            symbols = []
            continue
        symbols.append(symbol)

for prod, defs in productions.items():
    func = f"""private void {prod}() {{
    Token token = lexAn.peekToken();
    switch(token.symbol()) {{
"""
    for d in defs:
        for r in recurse(d[0]):
            func += f"        case {r}:\n"

        func += f'            System.out.println("{prod} -> {defs}");'

        for d2 in d:
            if d2.isupper():
                func += f"check({d2});"

    func += """    }
}"""
    print(func)