Paddle

Author	SHA1	Message	Date
dongzhihong	4b6b4bc84a	"change GetOrCreate to Var"	9 years ago
dongzhihong	5d6a3eee5b	new_var to get_or_create	9 years ago
Yu Yang	5d134a03f1	Refine remove std::shared_ptr in Scope * Make interface of Operator to `const Scope&`	9 years ago
Yu Yang	d027f47d7d	Default scope function `Paddle` manages Scope as programming language's scope. It just a thread-local stack of Scope. Top of that stack is current scope, the bottom of that stack is all scopes' parent. Invoking `create_var/get_var` can `create/get` variable in current scope. Invoking `enter_local_scope/leave_local_scope` can create or destroy local scope. A `scoped_function` will take a `function` as input. That function will be invoked in a new local scope.	9 years ago