def assign(self, varname: Symbol, varval: Expression):
if log.logger.fragile and not self.temp:
raise IrreversibleOperationError()
if isinstance(varval, Thunk):
assert varname == log.return_symbol
varval.bind(self)
return
self.vars[varname.value] = varval
log.logger.frame_store(self, varname.value, varval)
def apply(operator: Expression, operands: List[Expression], frame: Frame, gui_holder: log.Holder):
if isinstance(operator, Callable):
return operator.execute(operands, frame, gui_holder)
elif isinstance(operator, Symbol):
raise CallableResolutionError(f"Unable to pass parameters into the Symbol '{operator}'")
else:
raise CallableResolutionError(f"Unable to pass parameters into: '{operator}'")
def record(self, expr: Expression) -> 'Heap.HeapKey':
if isinstance(expr, evaluate_apply.Thunk):
return (False, 'thunk')
if (expr.id is None):
expr.id = get_id()
if ((expr.id not in self.prev) and (expr.id not in self.curr)):
if isinstance(expr, ValueHolder):
return (False, repr(expr))
elif isinstance(expr, Pair):
val = [self.record(expr.first), self.record(expr.rest)]
elif isinstance(expr, Promise):
val = expr.bind()
elif isinstance(expr, NilType):
return (False, 'nil')
elif isinstance(expr, UndefinedType):
return (False, 'undefined')
else:
val = [(False, repr(expr))]
self.curr[expr.id] = val
return (True, expr.id)
def record(self, expr: Expression) -> 'Heap.HeapKey':
if isinstance(expr, evaluate_apply.Thunk):
return False, "thunk"
if expr.id is None:
expr.id = get_id()
if expr.id not in self.prev and expr.id not in self.curr:
if isinstance(expr, ValueHolder):
return False, repr(expr)
elif isinstance(expr, Pair):
val = [self.record(expr.first), self.record(expr.rest)]
elif isinstance(expr, Promise):
val = expr.bind()
elif isinstance(expr, NilType):
return False, "nil"
elif isinstance(expr, UndefinedType):
return False, "undefined"
else:
# assume the repr method is good enough
val = [(False, repr(expr))]
self.curr[expr.id] = val
return True, expr.id
def apply(operator: Expression, operands: List[Expression], frame: Frame,
gui_holder: log.Holder):
if isinstance(operator, Callable):
return operator.execute(operands, frame, gui_holder)
elif isinstance(operator, Symbol):
raise CallableResolutionError(''.join([
"Unable to pass parameters into the Symbol '",
'{}'.format(operator), "'"
]))
else:
raise CallableResolutionError(''.join(
["Unable to pass parameters into: '", '{}'.format(operator), "'"]))