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memory.c
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memory.c
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#include "memory.h"
dtstr * func0read(list *mem,node *nd)
{
if(validateNode(nd,mem)=='1')
{
return nd->data;
}
return NULL;
}
dtstr * func1write(list *mem,node *nd,dtstr *dt)
{
if(validateNode(nd,mem)=='1')
{
free(nd->data);
nd->data=dt;
return nd;
}
return NULL;
}
node * func2seekp(list *mem,node *nd)
{
if(validateNode(nd,mem)=='1')
{
return nd->next;
}
return NULL;
}
node * func3seekn(list *mem,node *nd)
{
if(validateNode(nd,mem)=='1')
{
return nd->prev;
}
return NULL;
}
dtstr * func4addaftr(list *mem,node *nd,dtstr *dt)
{
if(validateNode(nd,mem)=='1')
{
addAfterNode(dt,nd,mem);
return nd;
}
return NULL;
}
dtstr * func5addbfr(list *mem,node *nd,dtstr *dt)
{
if(validateNode(nd,mem)=='1')
{
addBeforeNode(dt,nd,mem);
return nd;
}
return NULL;
}
dtstr * func7deletebfr(list *mem,node *nd)
{
if(validateNode(nd,mem)=='1')
{
deleteBeforeNode(nd,mem);
return nd;
}
return NULL;
}
dtstr * func6deleteaftr(list *mem,node *nd)
{
if(validateNode(nd,mem)=='1')
{
deleteAfterNode(nd,mem);
return nd;
}
return NULL;
}