escapes::EscapesVisitor Class Reference

Compute the escapes. More...

#include <escapes-visitor.hh>

Inheritance diagram for escapes::EscapesVisitor:

Collaboration diagram for escapes::EscapesVisitor:

Public Types
typedef ast::DefaultVisitor	super_type
	Super class type.

Public Member Functions
virtual void	operator() (typename Const< Ast >::type &e)
	The entry point: visit e.
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.
Visit Variable related nodes.
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
Visit Expression related nodes.
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
Visit Declaration related nodes.
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.
virtual void	operator() (typename Const< DecsList >::type &e) override
	Visit a list of function, type and/or variables declarations.
virtual void	operator() (typename Const< Decs >::type &e)
	Visit a Decs chunks.
virtual void	operator() (typename Const< VarDecs >::type &e) override
	Visit Var declarations.
virtual void	operator() (typename Const< VarDec >::type &e) override
virtual void	operator() (typename Const< FunctionDecs >::type &e) override
	Visit Function declarations.
virtual void	operator() (typename Const< FunctionDec >::type &e) override
virtual void	operator() (typename Const< TypeDecs >::type &e) override
	Visit Type declarations.
virtual void	operator() (typename Const< TypeDec >::type &e) override
template<typename DecsType >
void	decs_visit (typename Const< DecsType >::type &e)
	Visit a chunk (i.e., a list of Function, Var, and Type decs).
Visit Type related nodes.
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
Visit Field related nodes.
virtual void	operator() (typename Const< Field >::type &e) override
Object-related visits.
The methods should not be used, since this visitor is for the non-object flavor of the language.
virtual void	operator() (typename Const< ClassTy >::type &e) override
virtual void	operator() (typename Const< MethodDecs >::type &e) override
virtual void	operator() (typename Const< MethodDec >::type &e) override
virtual void	operator() (typename Const< MethodCallExp >::type &e) override
virtual void	operator() (typename Const< ObjectExp >::type &e) override

Protected Member Functions
template<typename E >
void	accept (E *e)

Detailed Description

Compute the escapes.

The EscapeVisitor is extremely similar to type::TypeChecker: in its course of operation it must relate uses to definitions. Therefore it will be run after the bind::Binder. It also needs auxiliary information about the definitions (their depth): a simple map suffice, since scoping issues were handled by the bind::Binder.

Note that this EscapesVisitor is mainly doing nothing: it is just interested in declaration and uses of variables/formals (and, of course, function declaration...). It would be somewhat stupid to write all the methods that `do nothing but walk'. This is why we will inherit from the non const ast::DefaultVisitor.

Member Typedef Documentation

typedef ast::DefaultVisitor escapes::EscapesVisitor::super_type

Super class type.

Member Function Documentation

template<template< typename > class Const>

template<typename E >

void ast::GenVisitor< Const >::accept ( E *  e )

protectedinherited

A convenient shortcut for recurring code like this:

if (e)
  e->accept(*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 >

void ast::GenDefaultVisitor< Const >::decs_visit ( typename Const< DecsType >::type &  e )

inlineinherited

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.

template<template< typename > class Const>

virtual void ast::GenVisitor< Const >::operator() ( typename Const< ClassTy >::type &  )

pure virtualinherited

Implemented in ast::GenNonObjectVisitor< Const >, and ast::GenObjectVisitor< Const >.

template<template< typename > class Const>

virtual void ast::GenVisitor< Const >::operator() ( typename Const< MethodCallExp >::type &  )

pure virtualinherited

Implemented in ast::GenNonObjectVisitor< Const >, and ast::GenObjectVisitor< Const >.

template<template< typename > class Const>

virtual void ast::GenVisitor< Const >::operator() ( typename Const< MethodDec >::type &  )

pure virtualinherited

Implemented in ast::GenNonObjectVisitor< Const >, and ast::GenObjectVisitor< Const >.

template<template< typename > class Const>

virtual void ast::GenVisitor< Const >::operator() ( typename Const< ObjectExp >::type &  )

pure virtualinherited

Implemented in ast::GenNonObjectVisitor< Const >, and ast::GenObjectVisitor< Const >.

template<template< typename > class Const>

void ast::GenDefaultVisitor< Const >::operator() ( typename Const< Ast >::type &  e )

virtualinherited

The entry point: visit e.

Reimplemented from ast::GenVisitor< Const >.

Referenced by callgraph::CallGraphVisitor::operator()(), object::Renamer::operator()(), and translate::Translator::operator()().

template<template< typename > class Const>

void ast::GenDefaultVisitor< Const >::operator() ( typename Const< SimpleVar >::type &  e )

overridevirtualinherited

Implements ast::GenVisitor< Const >.

template<template< typename > class Const>

void ast::GenDefaultVisitor< Const >::operator() ( typename Const< FieldVar >::type &  e )

overridevirtualinherited

Implements ast::GenVisitor< Const >.

template<template< typename > class Const>

void ast::GenDefaultVisitor< Const >::operator() ( typename Const< SubscriptVar >::type &  e )

overridevirtualinherited

Implements ast::GenVisitor< Const >.

template<template< typename > class Const>

void ast::GenDefaultVisitor< Const >::operator() ( typename Const< CastVar >::type &  e )

overridevirtualinherited

Implements ast::GenVisitor< Const >.

template<template< typename > class Const>

void ast::GenNonObjectVisitor< Const >::operator() ( typename Const< ClassTy >::type &  e )

overridevirtualinherited

Implements ast::GenVisitor< Const >.

References unreached.

template<template< typename > class Const>

template<class E >

void ast::GenVisitor< Const >::operator() ( E *  e )

inherited

Helper to visit nodes manipulated via a pointer.

template<template< typename > class Const>

void ast::GenDefaultVisitor< Const >::operator() ( typename Const< NilExp >::type &  e )

overridevirtualinherited

Implements ast::GenVisitor< Const >.

template<template< typename > class Const>

void ast::GenNonObjectVisitor< Const >::operator() ( typename Const< MethodDecs >::type &  e )

overridevirtualinherited

Implements ast::GenVisitor< Const >.

References unreached.

template<template< typename > class Const>

void ast::GenDefaultVisitor< Const >::operator() ( typename Const< IntExp >::type &  e )

overridevirtualinherited

Implements ast::GenVisitor< Const >.

template<template< typename > class Const>

void ast::GenDefaultVisitor< Const >::operator() ( typename Const< StringExp >::type &  e )

overridevirtualinherited

Implements ast::GenVisitor< Const >.

template<template< typename > class Const>

void ast::GenNonObjectVisitor< Const >::operator() ( typename Const< MethodDec >::type &  e )

overridevirtualinherited

Implements ast::GenVisitor< Const >.

References unreached.

template<template< typename > class Const>

void ast::GenDefaultVisitor< Const >::operator() ( typename Const< CallExp >::type &  e )

overridevirtualinherited

Implements ast::GenVisitor< Const >.

template<template< typename > class Const>

void ast::GenDefaultVisitor< Const >::operator() ( typename Const< OpExp >::type &  e )

overridevirtualinherited

Implements ast::GenVisitor< Const >.

template<template< typename > class Const>

void ast::GenNonObjectVisitor< Const >::operator() ( typename Const< MethodCallExp >::type &  e )

overridevirtualinherited

Implements ast::GenVisitor< Const >.

References unreached.

template<template< typename > class Const>

void ast::GenNonObjectVisitor< Const >::operator() ( typename Const< ObjectExp >::type &  e )

overridevirtualinherited

Implements ast::GenVisitor< Const >.

References unreached.

template<template< typename > class Const>

void ast::GenDefaultVisitor< Const >::operator() ( typename Const< RecordExp >::type &  e )

overridevirtualinherited

Implements ast::GenVisitor< Const >.

template<template< typename > class Const>

void ast::GenDefaultVisitor< Const >::operator() ( typename Const< SeqExp >::type &  e )

overridevirtualinherited

Implements ast::GenVisitor< Const >.

template<template< typename > class Const>

void ast::GenDefaultVisitor< Const >::operator() ( typename Const< AssignExp >::type &  e )

overridevirtualinherited

Implements ast::GenVisitor< Const >.

template<template< typename > class Const>

void ast::GenDefaultVisitor< Const >::operator() ( typename Const< IfExp >::type &  e )

overridevirtualinherited

Implements ast::GenVisitor< Const >.

template<template< typename > class Const>

void ast::GenDefaultVisitor< Const >::operator() ( typename Const< WhileExp >::type &  e )

overridevirtualinherited

Implements ast::GenVisitor< Const >.

template<template< typename > class Const>

void ast::GenDefaultVisitor< Const >::operator() ( typename Const< ForExp >::type &  e )

overridevirtualinherited

Implements ast::GenVisitor< Const >.

template<template< typename > class Const>

void ast::GenDefaultVisitor< Const >::operator() ( typename Const< BreakExp >::type &  )

overridevirtualinherited

Implements ast::GenVisitor< Const >.

template<template< typename > class Const>

void ast::GenDefaultVisitor< Const >::operator() ( typename Const< LetExp >::type &  e )

overridevirtualinherited

Implements ast::GenVisitor< Const >.

template<template< typename > class Const>

void ast::GenDefaultVisitor< Const >::operator() ( typename Const< ArrayExp >::type &  e )

overridevirtualinherited

Implements ast::GenVisitor< Const >.

template<template< typename > class Const>

void ast::GenDefaultVisitor< Const >::operator() ( typename Const< CastExp >::type &  e )

overridevirtualinherited

Implements ast::GenVisitor< Const >.

template<template< typename > class Const>

void ast::GenDefaultVisitor< Const >::operator() ( typename Const< FieldInit >::type &  e )

overridevirtualinherited

Implements ast::GenVisitor< Const >.

template<template< typename > class Const>

void ast::GenDefaultVisitor< Const >::operator() ( typename Const< DecsList >::type &  e )

overridevirtualinherited

Visit a list of function, type and/or variables declarations.

Implements ast::GenVisitor< Const >.

References misc::for_each().

template<template< typename > class Const>

void ast::GenDefaultVisitor< Const >::operator() ( typename Const< Decs >::type &  e )

virtualinherited

Visit a Decs chunks.

template<template< typename > class Const>

void ast::GenDefaultVisitor< Const >::operator() ( typename Const< VarDecs >::type &  e )

overridevirtualinherited

Visit Var declarations.

Implements ast::GenVisitor< Const >.

template<template< typename > class Const>

void ast::GenDefaultVisitor< Const >::operator() ( typename Const< VarDec >::type &  e )

overridevirtualinherited

Implements ast::GenVisitor< Const >.

template<template< typename > class Const>

virtual void ast::GenDefaultVisitor< Const >::operator() ( typename Const< FunctionDecs >::type &  e )

overridevirtualinherited

Visit Function declarations.

Implements ast::GenVisitor< Const >.

template<template< typename > class Const>

void ast::GenDefaultVisitor< Const >::operator() ( typename Const< FunctionDec >::type &  e )

overridevirtualinherited

Implements ast::GenVisitor< Const >.

template<template< typename > class Const>

virtual void ast::GenDefaultVisitor< Const >::operator() ( typename Const< TypeDecs >::type &  e )

overridevirtualinherited

Visit Type declarations.

Implements ast::GenVisitor< Const >.

template<template< typename > class Const>

void ast::GenDefaultVisitor< Const >::operator() ( typename Const< TypeDec >::type &  e )

overridevirtualinherited

Implements ast::GenVisitor< Const >.

template<template< typename > class Const>

void ast::GenDefaultVisitor< Const >::operator() ( typename Const< NameTy >::type &  e )

overridevirtualinherited

Implements ast::GenVisitor< Const >.

template<template< typename > class Const>

void ast::GenDefaultVisitor< Const >::operator() ( typename Const< RecordTy >::type &  e )

overridevirtualinherited

Implements ast::GenVisitor< Const >.

template<template< typename > class Const>

void ast::GenDefaultVisitor< Const >::operator() ( typename Const< ArrayTy >::type &  e )

overridevirtualinherited

Implements ast::GenVisitor< Const >.

template<template< typename > class Const>

void ast::GenDefaultVisitor< Const >::operator() ( typename Const< Field >::type &  e )

overridevirtualinherited

Implements ast::GenVisitor< Const >.

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The documentation for this class was generated from the following file:

• escapes/escapes-visitor.hh