General information
*******************

Some help to people wanting to hack on psycopg. First of all, note that
*every* function in the psycopg module source code is prefixed by one of the
following words:

    psyco is used for function directly callable from python (i.e., functions
        in the psycopg module itself.) the only notable exception is the
        source code for the module itself, that uses "psyco" even for C-only
        functions.

    conn is used for functions related to connection objects.

    curs is used for functions related to cursor objects.

    typecast is used for typecasters and utility function related to
        typecaster creation and registration.

Pythonic definition of types and functions available from python are defined
in *_type.c files. Internal functions, callable only from C are located in
*_int.c files and extensions to the DBAPI can be found in the *_ext.c files.


Patches
*******

If you submit a patch, please send a diff generated with the "-u" switch.
Also note that I don't like that much cosmetic changes (like renaming
already existing variables) and I will rewrap the patch to 78 columns
anyway, so it is much better if you do that beforehand.


The type system
***************

Simple types, like integers and strings, are converted to python base types
(the conversion functions are in typecast_base.c). Complex types are
converted to ad-hoc types, defined in the typeobj_*.{c,h} files. The
conversion function are in the other typecast_*.c files. typecast.c defines
the basic utility functions (available through the psycopg module) used when
defining new typecasters from C and python.