Blassic/function.cpp at master · NotFound/Blassic · GitHub

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// function.cpp
// Revision 10-jul-2004

#include"function.h"
#include"error.h"

#include<vector>
#include<map>

classParameterList::Internal {
public:
static Internal * getnew ();
voidaddref ();
voiddelref ();
voidpush_back (const std::string & name);
size_tsize () const;
//const std::string & get (size_t n) const;
	std::string get (size_t n) const;
private:
Internal ();
Internal (const Internal &); // Forbidden
~Internal () { }
voidoperator= (const Internal &); // Forbidden
size_t counter;
	std::vector <std::string> element;
};

ParameterList::Internal::Internal () :
	counter (1)
{
}

voidParameterList::Internal::addref ()
{
	++counter;
}

voidParameterList::Internal::delref ()
{
if (--counter == 0)
deletethis;
}

ParameterList::Internal * ParameterList::Internal::getnew ()
{
returnnew Internal;
}

voidParameterList::Internal::push_back (const std::string & name)
{
	element.push_back (name);
}

size_tParameterList::Internal::size () const
{
return element.size ();
}

//const std::string & ParameterList::Internal::get (size_t n) const
std::string ParameterList::Internal::get (size_t n) const
{
if (n >= element.size () )
throw ErrBlassicInternal;
return element [n];
}

ParameterList::ParameterList () :
	pin (Internal::getnew () )
{
}

ParameterList::ParameterList (const ParameterList & pl) :
	pin (pl.pin)
{
	pin->addref ();
}

ParameterList::~ParameterList ()
{
	pin->delref ();
}

ParameterList & ParameterList::operator= (const ParameterList & pl)
{
	pl.pin->addref ();
	pin->delref ();
	pin= pl.pin;
return * this;
}

voidParameterList::push_back (const std::string & name)
{
	pin->push_back (name);
}

size_tParameterList::size () const
{
return pin->size ();
}

//const std::string & ParameterList::operator [] (size_t n) const
std::string ParameterList::operator [] (size_t n) const
{
return pin->get (n);
}

classFunction::Internal {
public:
voidaddref ();
voiddelref ();
static Internal * getnew
 (const std::string & strdef, const ParameterList & param)
	{
returnnewInternal (strdef, param);
	}
static Internal * getnew
 (ProgramPos posfn, const ParameterList & param)
	{
returnnewInternal (posfn, param);
	}
	DefType getdeftype () const { return deftype; }
	CodeLine & getcode () { return code; }
	ProgramPos getpos () const { return pos; }
const ParameterList & getparam () { return param; }
protected:
// Protected to avoid a warning on certain versions of gcc.
Internal (const std::string & strdef, const ParameterList & param);
~Internal () { }
private:
Internal (ProgramPos posfn, const ParameterList & param);
Internal (const Internal &); // Forbidden
voidoperator = (const Internal &); // Forbidden
size_t counter;
	DefType deftype;
	CodeLine code;
	ProgramPos pos;
	ParameterList param;
};

Function::Internal::Internal
 (const std::string & strdef, const ParameterList & param) :
counter (1),
	deftype (DefSingle),
	param (param)
{
	code.scan (strdef);
}

Function::Internal::Internal
 (ProgramPos posfn, const ParameterList & param) :
counter (1),
	deftype (DefMulti),
	pos (posfn),
	param (param)
{
}

voidFunction::Internal::addref ()
{
	++counter;
}

voidFunction::Internal::delref ()
{
if (--counter == 0)
deletethis;
}

Function::Function (const std::string & strdef, const ParameterList & param) :
	pin (Internal::getnew (strdef, param) )
{
}

Function::Function (ProgramPos posfn, const ParameterList & param) :
	pin (Internal::getnew (posfn, param) )
{
}

Function::Function (const Function & f) :
	pin (f.pin)
{
	pin->addref ();
}

Function::~Function ()
{
	pin->delref ();
}

Function & Function::operator= (const Function & f)
{
	f.pin->addref ();
	pin->delref ();
	pin= f.pin;
return * this;
}

Function::DefType Function::getdeftype () const
{
return pin->getdeftype ();
}

CodeLine & Function::getcode ()
{
return pin->getcode ();
}

ProgramPos Function::getpos () const
{
return pin->getpos ();
}

const ParameterList & Function::getparam ()
{
return pin->getparam ();
}

namespace {

typedef std::map <std::string, Function> mapfunction_t;
mapfunction_t mapfunction;

} // namespace

voidFunction::clear ()
{
	mapfunction.clear ();
}

voidFunction::insert (const std::string & name)
{
mapfunction_t::iterator it=
 mapfunction.find (name);
if (it != mapfunction.end () )
 it->second= * this;
else
 mapfunction.insert (std::make_pair (name, * this) );
}

Function & Function::get (const std::string & name)
{
mapfunction_t::iterator it=
 mapfunction.find (name);
if (it != mapfunction.end () )
return it->second;
throw ErrFunctionNoDefined;
}

// Fin de function.cpp