Public Member Functions |
virtual void | operator() (typename Const< Ast >::type &e) |
| The entry point: visit e.
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virtual void | operator() (typename Const< ClassTy >::type &)=0 |
virtual void | operator() (typename Const< MethodCallExp >::type &)=0 |
virtual void | operator() (typename Const< MethodDec >::type &)=0 |
virtual void | operator() (typename Const< ObjectExp >::type &)=0 |
template<class E > |
void | operator() (E *e) |
| Helper to visit nodes manipulated via a pointer.
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| GenDefaultVisitor () |
| Construct a default visitor.
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virtual | ~GenDefaultVisitor () |
| Destroy a default visitor.
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virtual void | operator() (typename Const< SimpleVar >::type &e) override |
virtual void | operator() (typename Const< FieldVar >::type &e) override |
virtual void | operator() (typename Const< SubscriptVar >::type &e) override |
virtual void | operator() (typename Const< CastVar >::type &e) override |
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virtual void | operator() (typename Const< NilExp >::type &e) override |
virtual void | operator() (typename Const< IntExp >::type &e) override |
virtual void | operator() (typename Const< StringExp >::type &e) override |
virtual void | operator() (typename Const< CallExp >::type &e) override |
virtual void | operator() (typename Const< OpExp >::type &e) override |
virtual void | operator() (typename Const< RecordExp >::type &e) override |
virtual void | operator() (typename Const< SeqExp >::type &e) override |
virtual void | operator() (typename Const< AssignExp >::type &e) override |
virtual void | operator() (typename Const< IfExp >::type &e) override |
virtual void | operator() (typename Const< WhileExp >::type &e) override |
virtual void | operator() (typename Const< ForExp >::type &e) override |
virtual void | operator() (typename Const< BreakExp >::type &) override |
virtual void | operator() (typename Const< LetExp >::type &e) override |
virtual void | operator() (typename Const< ArrayExp >::type &e) override |
virtual void | operator() (typename Const< CastExp >::type &e) override |
virtual void | operator() (typename Const< FieldInit >::type &e) override |
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Visiting declarations is simple, but there are many clauses. This is because in Tiger, the declarations are processed by chunks (a chunk of Function declarations, then Var or Type, then ...). So we have to explain
- How to visit a list of chunks;
- how to visit chunks of function, var, or type declarations;
- how to visit a single function, var, or type declaration.
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virtual void | operator() (typename Const< DecsList >::type &e) override |
| Visit a list of function, type and/or variables declarations.
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virtual void | operator() (typename Const< Decs >::type &e) |
| Visit a Decs chunks.
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template<typename DecsType > |
void | decs_visit (typename Const< DecsType >::type &e) |
| Visit a chunk (i.e., a list of Function, Var, and Type decs).
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virtual void | operator() (typename Const< VarDecs >::type &e) override |
| Visit Var declarations.
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virtual void | operator() (typename Const< VarDec >::type &e) override |
virtual void | operator() (typename Const< FunctionDecs >::type &e) override |
| Visit Function declarations.
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virtual void | operator() (typename Const< FunctionDec >::type &e) override |
virtual void | operator() (typename Const< TypeDecs >::type &e) override |
| Visit Type declarations.
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virtual void | operator() (typename Const< TypeDec >::type &e) override |
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virtual void | operator() (typename Const< NameTy >::type &e) override |
virtual void | operator() (typename Const< RecordTy >::type &e) override |
virtual void | operator() (typename Const< ArrayTy >::type &e) override |
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virtual void | operator() (typename Const< Field >::type &e) override |
template<template< typename > class Const>
class ast::GenDefaultVisitor< Const >
Just visit the whole Ast tree (except object-related nodes).
GenDefaultVisitor<CONSTNESS-SELECTOR> visits non-object-related node of the the whole Ast tree, but does nothing else.
Beware, as there are no implementations visiting object-oriented constructs (classes, objects, methods), hence this class is abstract.
ast::GenDefaultVisitor inherits virtually from ast::GenVisitor to allow diamond inheritance, e.g. so that a subclass of ast::GenDefaultVisitor can also inherit missing object-related implementations from another class (inheriting from ast::GenVisitor).
- See Also
- ast::NonObjectVisitor for more information.
template<template< typename > class Const>
template<typename E >
A convenient shortcut for recurring code like this:
However, the drawback of this approach is that it doesn't take care of the constness, and any const violation will be reported within the body of this method, not at its corresponding call site.
We cannot use the misc/select_const.hh approach here, since the compiler cannot resolve a function overloaded or specialized on an associated type of a template. E.g., writing accept like this:
template <typename E>
void accept(
typename Const<E>::type* e);
won't work directly. Of course, one can help the compiler, providing it with E
accept<ast::NameTy>(e.result_get());
but this is painful.
template<template< typename > class Const>
template<typename DecsType >
Visit a chunk (i.e., a list of Function, Var, and Type decs).
It is exactly the same in the three cases, so the code is factored via a template method.