本文整理汇总了Python中SymbolTable.SymbolTable.is_inside_loop方法的典型用法代码示例。如果您正苦于以下问题：Python SymbolTable.is_inside_loop方法的具体用法？Python SymbolTable.is_inside_loop怎么用？Python SymbolTable.is_inside_loop使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类SymbolTable.SymbolTable的用法示例。
在下文中一共展示了SymbolTable.is_inside_loop方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Python代码示例。
示例1: TypeChecker
# 需要导入模块: from SymbolTable import SymbolTable [as 别名]
# 或者: from SymbolTable.SymbolTable import is_inside_loop [as 别名]
#.........这里部分代码省略.........
self.symbol_table.set_inside_loop(1)
for item in node.body:
self.visit(item)
self.visit(node.condition)
self.symbol_table.set_inside_loop(0)
def visit_ReturnInstr(self, node):
ret_type = self.get_return_type(node.expression)
scope = self.symbol_table
while scope and scope.name != "FunctionDef":
scope = scope.get_parent_scope()
if scope:
fun_def = scope.get(scope.function_name)
if fun_def:
function_ret_type = fun_def.type.name
scope.set_return_present(1)
if ret_type and function_ret_type:
if function_ret_type == 'int' and ret_type == 'float':
print("Warning: Possible loss of precision: returning %s from function returning %s: line %s" %
(ret_type, function_ret_type, node.lineno))
elif function_ret_type == 'float' and ret_type == 'int':
pass
elif ret_type != function_ret_type:
print("Error: Improper returned type, expected %s, got %s: line %s" %
(function_ret_type, ret_type, node.lineno))
else:
# should not happen...
print("something bad happened while parsing or checking")
else:
print("Error: return instruction outside a function: line %s" % node.lineno)
def visit_ContinueInstr(self, node):
if not self.symbol_table.is_inside_loop():
print("Error: continue instruction outside a loop: line %s" % node.lineno)
def visit_BreakInstr(self, node):
if not self.symbol_table.is_inside_loop():
print("Error: break instruction outside a loop: line %s" % node.lineno)
def visit_CompoundInstr(self, node):
self.symbol_table = self.symbol_table.push_scope("CompoundInstr")
for item in node.declarations:
self.visit(item)
for item in node.instructions:
self.visit(item)
self.symbol_table = self.symbol_table.pop_scope()
def visit_BinaryExpr(self, node):
type_1 = self.get_return_type(node.left)
if not type_1:
print("Error: Usage of undeclared variable '%s': line %s" % (self.visit(node.left), node.lineno))
type_2 = self.get_return_type(node.right)
if not type_2:
print("Error: Usage of undeclared variable '%s': line %s" % (self.visit(node.right), node.lineno))
op = self.visit(node.op)
ret = self.ttypes[op][type_1][type_2]
if not ret:
print("Error: Illegal operation, %s %s %s: line %s" % (type_1, op, type_2, node.left.lineno))
return ret
def visit_MethodCallExpr(self, node):
name = self.visit(node.name)
fun_def = self.symbol_table.get(name)
if fun_def:
if len(fun_def.args) != len(node.args):