def main():
interpreter = Interpreter()
while True:
try:
buffer = get_input('eLisp> ')
except EOFError:
print()
break
lexer = Lexer(buffer)
try:
exprs = Parser(lexer).parse()
if not exprs:
continue
expr = exprs[0]
if is_load(expr):
load(interpreter, expr)
continue
result_expr = interpreter.interpret(expr)
if procedure.is_compound_procedure(result_expr):
print (procedure.get_procedure_repr(result_expr))
else:
print (result_expr)
except Exception as e:
print (str(e))
continue
def _apply(self, proc, args):
if procedure.is_primitive_procedure(proc):
return procedure.apply_primitive_procedure(proc, args)
elif procedure.is_compound_procedure(proc):
return self._eval_sequence(
procedure.procedure_body(proc),
extend_environment(
procedure.procedure_parameters(proc),
args,
procedure.procedure_environment(proc)))
