def __init__(self, grammar, lexer):
self.grammar = grammar
self.glexer = glexer
self.mp = MetaParser(grammar, glexer, False)
self.sm = LLStateMachine(self.mp)
self.table = table
self.start = self.mp.productions.start
def __init__(self, grammar):
self.grammar = grammar # GRAMMAR FOR LANGUAGE
grammar_lexer = MyLexer(grammar)
grammar_lexer.lex()
self.mp = MetaParser(grammar, grammar_lexer, False)
self.sm = LLStateMachine(self.mp)
self.table = self.sm.table
self.start = self.mp.productions.start
def test_grammar(grammar):
global errors
Symbol.reset()
print('=' * 80)
print('{0:=^80}'.format(' Testing Grammar '))
print('=' * 80)
print(grammar)
try:
print("Creating Lexer")
lexer = Lexer(grammar)
print("Creating MetaParser")
mp = MetaParser(grammar, lexer)
except Exception as e:
print("ERROR:")
print(e)
errors += 1
from cup.lexer.lexer import Lexer
from cup.parser.metaparser import MetaParser
from cup.lexer.tokens import *
from cup.parser.symbols import Terminal, NonTerminal, Production
from cup.parser.statemachine import Item, State, LRStateMachine
from cup.utils.helper import print_banner
with open("test/grammar.bcup") as f:
grammar = f.read()
lexer = Lexer(grammar)
mp = MetaParser(grammar, lexer)
print_banner("TERMINALS")
print(mp.terminals)
print_banner("NONTERMINALS")
print(mp.nonterminals)
print(mp.token_map)
print_banner("PRODUCTIONS")
print(mp.productions)
mp.compute_firsts()
mp.compute_follows()
follows = mp.productions.follows
firsts = mp.productions.firsts
print_banner("FIRSTS")
for key in firsts:
s = "FIRST({}) = {{".format(key)