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main.py
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main.py
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import sys
import antlr4
from kmmszarp.kmmszarpLexer import kmmszarpLexer
from kmmszarp.kmmszarpParser import kmmszarpParser
from visitor import Visitor
from err import ErrorListener, ExecutionError
def main(argv):
# Input
try:
input_stream = antlr4.FileStream(argv[1], encoding="utf-8")
except FileNotFoundError:
print("Plik nie istnieje")
sys.exit(1)
except KeyError:
print("Nie podano pliku")
sys.exit(1)
except Exception as e:
print("Nie udało się otworzyć pliku: " + e)
sys.exit(1)
# Lexer
lexer = kmmszarpLexer(input_stream)
lexer.removeErrorListeners()
# Parser
stream = antlr4.CommonTokenStream(lexer)
parser = kmmszarpParser(stream)
parser.removeErrorListeners()
parser.addErrorListener(ErrorListener())
tree = parser.program()
if parser.getNumberOfSyntaxErrors() > 0:
sys.exit(2)
# Visitor
visitor = Visitor()
try:
visitor.visitProgram(tree)
except ExecutionError as e:
print(e, file=sys.stderr)
sys.exit(3)
if __name__ == '__main__':
main(sys.argv)