C++ templates:
tsSLList.h - type safe single linked list template
tsDLList.h - type safe double linked list template
resourceLib.h - hash table template
tsFreeeList.h - free list allocator / deallocator
the test subdir contains examples
Since I am using templates the linked lists are type safe
(no casting of pointers ala ellList and dllList).
Also, the node class in embedded in the item on the
list (more efficient use of pool).
The file resourceLib.h provides a core hashing library
"resTable <itemClass, idClass>" where "itemClass" objects
are stored in the hash table and "idClass" is the data type
of the key for the hash table. The identifier class provides
the hash alg. I have provided simple string "stringId" and
unsigned integer "uintId" key types in resourceLib.h. It
is easy to implement a new key class.
There are examples under cxxTemplate/test. The list/hashing
templates all depend on a particular inheritance hierarchy.
If the inheritance hierarchy is wrong nothing will compile.
For instance, in tsDLList.h the template data type "T"
must derive from tsDLNode<T>. Likewise, in tsSLList.h
"T" must derive from tsSLNode<T>. Likewise, in resourceLib.h
class "T" (the type stored in the hash table) must derive
from class "ID" (the hash table key type) and also derive from
tsSLNode<T>.
So far, the only confusion I have run into with templates has been:
1) strange compiler messages - unrelated to cause of course -
when I get the class declaration order wrong (so that the
compiler has trouble instantiating the template).
2) sun pro/dec/att compilers use a template database and
gnu/msvc++ compilers use explicit template instantiation.
Therefore blocks of code of this sort are required:
#include "resourceLib.h" // template def
#include "resourceLib.cc" // template functions (that are not inline)
#if defined (EXPL_TEMPL)
//
// From Stroustrups's "The C++ Programming Language"
// Appendix A: r.14.9
//
// This explicitly instantiates the template class's member
// functions into "templInst.o"
//
template class resTable<fred,uintId>;
template class resTable<jane,stringId>;
#endif
