def eval(self, ns):
if eval(self.cond, ns):
return eval(self.then, ns)
elif self.else_:
return eval(self.else_, ns)
else:
return None
def eval(self, ns):
try:
return eval(self.expr, ns)
except:
ex = sys.exc_info()[1]
for ex_type_expr, handler in self.handlers:
ex_type = eval(ex_type_expr, ns)
if isinstance(ex, ex_type):
return eval(handler, ns)
raise
def eval_all(exprs, ns):
result = None
for e in exprs:
result = eval(e, ns)
return result
def eval(self, ns):
return ns.define_global(self.symbol.name, eval(self.value, ns))
def eval(self, ns):
if isinstance(self.exception, str):
raise Exception(self.exception)
else:
raise eval(self.exception, ns)
