desugar::DesugarVisitor Class Reference

Desugar some syntactic structures while duplicating an Ast. More...

#include <desugar-visitor.hh>

Inheritance diagram for desugar::DesugarVisitor:

Collaboration diagram for desugar::DesugarVisitor:

Public Types
typedef astclone::Cloner	super_type
	Superclass.

Public Member Functions
	DesugarVisitor (bool desugar_for_p, bool desugar_string_cmp_p)
	Build a DesugarVisitor.
virtual	~DesugarVisitor ()
	Destroy a DesugarVisitor.
ast::Ast *	result_get ()
template<typename T >
T *	recurse (const T &t)
template<typename T >
T *	recurse (const T *const t)
template<typename CollectionType >
CollectionType *	recurse_collection (const CollectionType &c)
	Clone a collection object.
virtual void	operator() (const ast::ArrayExp &) override
virtual void	operator() (const ast::ArrayTy &) override
virtual void	operator() (const ast::AssignExp &) override
virtual void	operator() (const ast::BreakExp &) override
virtual void	operator() (const ast::CallExp &) override
virtual void	operator() (const ast::CastExp &) override
virtual void	operator() (const ast::CastVar &) override
virtual void	operator() (const ast::ClassTy &) override
virtual void	operator() (const ast::DecsList &) override
virtual void	operator() (const ast::Field &) override
virtual void	operator() (const ast::FieldInit &) override
virtual void	operator() (const ast::FieldVar &) override
virtual void	operator() (const ast::FunctionDec &) override
virtual void	operator() (const ast::IfExp &) override
virtual void	operator() (const ast::IntExp &) override
virtual void	operator() (const ast::LetExp &) override
virtual void	operator() (const ast::MethodCallExp &) override
virtual void	operator() (const ast::MethodDec &) override
virtual void	operator() (const ast::NameTy &) override
virtual void	operator() (const ast::NilExp &) override
virtual void	operator() (const ast::ObjectExp &) override
virtual void	operator() (const ast::RecordExp &) override
virtual void	operator() (const ast::RecordTy &) override
virtual void	operator() (const ast::SeqExp &) override
virtual void	operator() (const ast::SimpleVar &) override
virtual void	operator() (const ast::StringExp &) override
virtual void	operator() (const ast::SubscriptVar &) override
virtual void	operator() (const ast::TypeDec &) override
virtual void	operator() (const ast::VarDec &) override
virtual void	operator() (const ast::WhileExp &) override
virtual void	operator() (const ast::FunctionDecs &) override
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.
template<typename DecsType >
void	decs_visit (const DecsType &e)
	Visit a chunk (i.e., a list of Function, Var, and Type decs).
Visit methods.
virtual void	operator() (const ast::OpExp &) override
	Desugar string comparisons.
virtual void	operator() (const ast::ForExp &) override
	Desugar `for' loops as `while' loops.
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< FunctionDec >::type &e) override
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

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

Protected Attributes
ast::Ast *	result_
	The cloned Ast.

Private Attributes
bool	desugar_for_p_
	Desugar `for' loops?
bool	desugar_string_cmp_p_
	Desugar string comparisons?

Detailed Description

Desugar some syntactic structures while duplicating an Ast.

Member Typedef Documentation

typedef astclone::Cloner desugar::DesugarVisitor::super_type

Superclass.

Constructor & Destructor Documentation

desugar::DesugarVisitor::DesugarVisitor	(	bool	desugar_for_p,
		bool	desugar_string_cmp_p
	)

Build a DesugarVisitor.

desugar::DesugarVisitor::~DesugarVisitor ( )

virtual

Destroy a DesugarVisitor.

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<typename DecsType >

void astclone::Cloner::decs_visit ( const DecsType &  e )

inherited

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.

References assertion.

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.

virtual void desugar::DesugarVisitor::operator() ( const ast::OpExp &  )

overridevirtual

Desugar string comparisons.

Reimplemented from astclone::Cloner.

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 >.

virtual void desugar::DesugarVisitor::operator() ( const ast::ForExp &  )

overridevirtual

Desugar `for' loops as `while' loops.

Reimplemented from astclone::Cloner.

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 >.

void astclone::Cloner::operator() ( const ast::ArrayExp &  e )

overridevirtualinherited

Referenced by object::DesugarVisitor::operator()().

void astclone::Cloner::operator() ( const ast::ArrayTy &  e )

overridevirtualinherited

References ast::ArrayTy::base_type_get(), ast::Ast::location_get(), astclone::Cloner::recurse(), and astclone::Cloner::result_.

void astclone::Cloner::operator() ( const ast::AssignExp &  e )

overridevirtualinherited

Reimplemented in object::DesugarVisitor.

void astclone::Cloner::operator() ( const ast::BreakExp &  e )

overridevirtualinherited

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()().

void astclone::Cloner::operator() ( const ast::CallExp &  e )

overridevirtualinherited

Reimplemented in object::DesugarVisitor.

void astclone::Cloner::operator() ( const ast::CastExp &  e )

overridevirtualinherited

References ast::CastExp::exp_get(), ast::Ast::location_get(), astclone::Cloner::recurse(), astclone::Cloner::result_, and ast::CastExp::ty_get().

void astclone::Cloner::operator() ( const ast::CastVar &  e )

overridevirtualinherited

References astclone::Cloner::recurse(), astclone::Cloner::result_, ast::CastVar::ty_get(), and ast::CastVar::var_get().

void astclone::Cloner::operator() ( const ast::ClassTy &  e )

overridevirtualinherited

References ast::ClassTy::decs_get(), ast::Ast::location_get(), astclone::Cloner::recurse(), astclone::Cloner::result_, and ast::ClassTy::super_get().

template<template< typename > class Const>

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

overridevirtualinherited

Implements ast::GenVisitor< Const >.

void astclone::Cloner::operator() ( const ast::DecsList &  e )

overridevirtualinherited

Reimplemented in object::DesugarVisitor.

References ast::DecsList::decs_get(), ast::Ast::location_get(), astclone::Cloner::recurse_collection(), and astclone::Cloner::result_.

void astclone::Cloner::operator() ( const ast::Field &  e )

overridevirtualinherited

References ast::Ast::location_get(), ast::Field::name_get(), astclone::Cloner::recurse(), astclone::Cloner::result_, and ast::Field::type_name_get().

template<template< typename > class Const>

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

overridevirtualinherited

Implements ast::GenVisitor< Const >.

void astclone::Cloner::operator() ( const ast::FieldInit &  e )

overridevirtualinherited

References ast::FieldInit::init_get(), ast::Ast::location_get(), ast::FieldInit::name_get(), astclone::Cloner::recurse(), and astclone::Cloner::result_.

template<template< typename > class Const>

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

overridevirtualinherited

Implements ast::GenVisitor< Const >.

void astclone::Cloner::operator() ( const ast::FieldVar &  e )

overridevirtualinherited

Reimplemented in object::DesugarVisitor.

template<template< typename > class Const>

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

overridevirtualinherited

Implements ast::GenVisitor< Const >.

void astclone::Cloner::operator() ( const ast::FunctionDec &  e )

overridevirtualinherited

Reimplemented in object::DesugarVisitor.

References ast::FunctionDec::body_get(), ast::FunctionDec::formals_get(), ast::Ast::location_get(), ast::Dec::name_get(), astclone::Cloner::recurse(), astclone::Cloner::result_, and ast::FunctionDec::result_get().

void astclone::Cloner::operator() ( const ast::IfExp &  e )

overridevirtualinherited

void astclone::Cloner::operator() ( const ast::IntExp &  e )

overridevirtualinherited

References ast::Ast::location_get(), astclone::Cloner::result_, and ast::IntExp::value_get().

void astclone::Cloner::operator() ( const ast::LetExp &  e )

overridevirtualinherited

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 >.

void astclone::Cloner::operator() ( const ast::MethodCallExp &  e )

overridevirtualinherited

Reimplemented in object::DesugarVisitor.

template<template< typename > class Const>

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

overridevirtualinherited

Implements ast::GenVisitor< Const >.

void astclone::Cloner::operator() ( const ast::MethodDec &  e )

overridevirtualinherited

References ast::FunctionDec::body_get(), ast::FunctionDec::formals_get(), ast::Ast::location_get(), ast::Dec::name_get(), astclone::Cloner::recurse(), astclone::Cloner::result_, and ast::FunctionDec::result_get().

template<template< typename > class Const>

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

overridevirtualinherited

Implements ast::GenVisitor< Const >.

void astclone::Cloner::operator() ( const ast::NameTy &  e )

overridevirtualinherited

Reimplemented in object::DesugarVisitor.

References ast::Ast::location_get(), ast::NameTy::name_get(), and astclone::Cloner::result_.

template<template< typename > class Const>

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

overridevirtualinherited

Implements ast::GenVisitor< Const >.

void astclone::Cloner::operator() ( const ast::NilExp &  e )

overridevirtualinherited

References ast::Ast::location_get(), and astclone::Cloner::result_.

template<template< typename > class Const>

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

overridevirtualinherited

Implements ast::GenVisitor< Const >.

void astclone::Cloner::operator() ( const ast::ObjectExp &  e )

overridevirtualinherited

Reimplemented in object::DesugarVisitor.

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 >.

void astclone::Cloner::operator() ( const ast::RecordExp &  e )

overridevirtualinherited

template<template< typename > class Const>

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

overridevirtualinherited

Implements ast::GenVisitor< Const >.

void astclone::Cloner::operator() ( const ast::RecordTy &  e )

overridevirtualinherited

template<template< typename > class Const>

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

overridevirtualinherited

Implements ast::GenVisitor< Const >.

void astclone::Cloner::operator() ( const ast::SeqExp &  e )

overridevirtualinherited

template<template< typename > class Const>

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

overridevirtualinherited

Implements ast::GenVisitor< Const >.

void astclone::Cloner::operator() ( const ast::SimpleVar &  e )

overridevirtualinherited

References ast::SimpleVar::name_get(), and astclone::Cloner::result_.

void astclone::Cloner::operator() ( const ast::StringExp &  e )

overridevirtualinherited

template<template< typename > class Const>

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

overridevirtualinherited

Implements ast::GenVisitor< Const >.

void astclone::Cloner::operator() ( const ast::SubscriptVar &  e )

overridevirtualinherited

References ast::SubscriptVar::index_get(), astclone::Cloner::recurse(), astclone::Cloner::result_, and ast::SubscriptVar::var_get().

template<template< typename > class Const>

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

overridevirtualinherited

Implements ast::GenVisitor< Const >.

void astclone::Cloner::operator() ( const ast::TypeDec &  e )

overridevirtualinherited

References ast::Ast::location_get(), ast::Dec::name_get(), astclone::Cloner::recurse(), astclone::Cloner::result_, and ast::TypeDec::ty_get().

template<template< typename > class Const>

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

overridevirtualinherited

Implements ast::GenVisitor< Const >.

void astclone::Cloner::operator() ( const ast::VarDec &  e )

overridevirtualinherited

Reimplemented in object::DesugarVisitor.

References ast::VarDec::init_get(), ast::Ast::location_get(), ast::Dec::name_get(), astclone::Cloner::recurse(), and ast::VarDec::type_name_get().

template<template< typename > class Const>

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

overridevirtualinherited

Implements ast::GenVisitor< Const >.

void astclone::Cloner::operator() ( const ast::WhileExp &  e )

overridevirtualinherited

References ast::WhileExp::body_get(), ast::Ast::location_get(), astclone::Cloner::recurse(), astclone::Cloner::result_, and ast::WhileExp::test_get().

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 >.

void astclone::Cloner::operator() ( const ast::FunctionDecs &  e )

overridevirtualinherited

Reimplemented in object::DesugarVisitor.

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>

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

overridevirtualinherited

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 >.

template<typename T >

T * astclone::Cloner::recurse ( const T &  t )

inherited

References assertion.

Referenced by object::DesugarVisitor::operator()(), astclone::Cloner::operator()(), and object::DesugarVisitor::recurse_args().

template<typename T >

T * astclone::Cloner::recurse ( const T *const  t )

inherited

References assertion.

template<typename CollectionType >

CollectionType * astclone::Cloner::recurse_collection ( const CollectionType &  c )

inherited

Clone a collection object.

Using overloading for this method is tempting, but it would lead to the same prototype than the first recurse method.

A partial specialization for std::list<T> would work, but is not allowed by C++ standard. As a consequence, we are stuck to using different names.

References assertion.

Referenced by astclone::Cloner::operator()().

Ast * astclone::Cloner::result_get ( )

inherited

References astclone::Cloner::result_.

Referenced by astclone::clone(), inlining::inline_expand(), inlining::prune(), desugar::raw_bound_checks_add(), desugar::raw_desugar(), and object::raw_desugar().

Member Data Documentation

bool desugar::DesugarVisitor::desugar_for_p_

private

Desugar `for' loops?

bool desugar::DesugarVisitor::desugar_string_cmp_p_

private

Desugar string comparisons?

ast::Ast* astclone::Cloner::result_

protectedinherited

The cloned Ast.

Referenced by object::DesugarVisitor::operator()(), astclone::Cloner::operator()(), and astclone::Cloner::result_get().

---

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

• desugar/desugar-visitor.hh
• desugar/desugar-visitor.cc