def main():
while True:
try:
text = input('rafmath: ')
except (EOFError, KeyboardInterrupt):
break
if not text:
continue
if (text.lower() == 'exit'):
break
try:
lexer = Lexer(text)
parser = Parser(lexer)
interpreter = Interpreter(parser)
result = interpreter.interpret()
if isinstance(result, int):
print(result)
if isinstance(result, float):
result *= 1000
result = int(result)
result = result / 1000
print(result)
except:
print('ERROR')
pass
def run(source: str, interpreter: Interpreter) -> None:
scanner = Scanner(source)
scanner.scan_tokens()
if scanner.had_error:
print(f'Error scanning')
return
parser = Parser(scanner.tokens)
statements = parser.parse()
if parser.had_error:
print(f'Error parsing')
for err in parser.errors:
parser_error_print(err, scanner.source_lines)
else:
resolve_statements(statements)
try:
interpreter.interpret(statements)
except LoxRuntimeError as err:
print(f'{err.msg}')
def main():
arg = sys.argv[1]
processtime_in_ms = time.time() * 1000
with open(arg) as fs:
# Generate Tokens
lexer = Lexer(fs.read())
tokens = lexer.generate_tokens()
# Generate AST
parser = Parser(tokens)
ast = parser.parse()
# Global conductor instance
conductor = Conductor()
# Interpret AST
interpreter = Interpreter(ast, conductor)
interpreter.interpret()
print(f"\nPROCESS TIME: {time.time() * 1000 - processtime_in_ms}ms")
def main():
while True:
try:
# To run under Python3 replace 'raw_input' call
# with 'input'
text = input('alng >>')
except EOFError:
break
if not text:
continue
lexer = Lexer(text)
parser = Parser(lexer)
interpreter = Interpreter(parser)
result = interpreter.interpret()
print(result)
def main():
while True:
try:
text = input('rafmath: ')
except (EOFError, KeyboardInterrupt):
break
if text == 'exit':
exit('Goodbye')
if not text:
continue
text += ' '
lexer = Lexer(text)
parser = Parser(lexer)
interpreter = Interpreter(parser)
result = interpreter.interpret()
print(result)
def run_interpreter(text):
result = {}
result['output'] = []
with Capturing() as output:
try:
lexer = Lexer(text)
parser = Parser(lexer)
tree = parser.parse()
sem_an = SemanticAnalyzer(tree)
sem_an.analyse()
interpreter = Interpreter(tree)
result['final_result'] = interpreter.interpret()
except Exception as exc:
result['exception'] = str(exc)
if output:
result['output'] = output
return result
def main():
while True:
try:
text = input('>>>RAFMATH ')
except (EOFError, KeyboardInterrupt):
break
if not text:
continue
lexer = Lexer(text)
parser = Parser(lexer)
interpreter = Interpreter(parser)
result = interpreter.interpret()
if result in (True, False):
print(result)
elif float(result).is_integer():
print("%.0f" % result)
else:
print("%.3f" % result)
def interpret(expression):
"""Interpret expression and return the result."""
lexer = Lexer(expression)
parser = Parser(lexer)
interpreter = Interpreter(parser)
return interpreter.interpret()
def test_int_5(tree, capsys):
interpreter = Interpreter(tree)
with pytest.raises(Exception) as excinfo:
result = interpreter.interpret()
assert 'Invalid syntax' in str(excinfo)
def test_int_4(tree, capsys):
interpreter = Interpreter(tree)
result = interpreter.interpret()
assert result == 'success'
captured = capsys.readouterr()
assert captured.out == 'Factorial of 3 is : 24\n'
def test_int_3(tree, capsys):
interpreter = Interpreter(tree)
result = interpreter.interpret()
assert result == 'success'
captured = capsys.readouterr()
assert captured.out == '3\n'
def test_int_7(tree, capsys):
interpreter = Interpreter(tree)
with pytest.raises(Exception) as excinfo:
result = interpreter.interpret()
assert 'Error: Can not run + operation on types str and int' in str(excinfo)