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diff --git a/doc/html/_sources/introduction.txt b/doc/html/_sources/introduction.txt new file mode 100644 index 0000000..8515243 --- /dev/null +++ b/doc/html/_sources/introduction.txt @@ -0,0 +1,169 @@ +Introduction +============ + +This is the reference guide for SIP 4.10.5. SIP is a tool for +automatically generating `Python <http://www.python.org>`__ bindings for C and +C++ libraries. SIP was originally developed in 1998 for +`PyQt <http://www.riverbankcomputing.com/software/pyqt>`__ - the Python +bindings for the Qt GUI toolkit - but is suitable for generating bindings for +any C or C++ library. + +This version of SIP generates bindings for Python v2.3 or later, including +Python v3. + +There are many other similar tools available. One of the original such tools +is `SWIG <http://www.swig.org>`__ and, in fact, SIP is so called because it +started out as a small SWIG. Unlike SWIG, SIP is specifically designed for +bringing together Python and C/C++ and goes to great lengths to make the +integration as tight as possible. + +The homepage for SIP is http://www.riverbankcomputing.com/software/sip. Here +you will always find the latest stable version and the latest version of this +documentation. + +SIP can also be downloaded from the +`Mercurial <http://mercurial.selenic.com/>`__ repository at +http://www.riverbankcomputing.com/hg/sip. + + +License +------- + +SIP is licensed under similar terms as Python itself. SIP is also licensed +under the GPL (both v2 and v3). It is your choice as to which license you +use. If you choose the GPL then any bindings you create must be distributed +under the terms of the GPL. + + +Features +-------- + +SIP, and the bindings it produces, have the following features: + +- bindings are fast to load and minimise memory consumption especially when + only a small sub-set of a large library is being used + +- automatic conversion between standard Python and C/C++ data types + +- overloading of functions and methods with different argument signatures + +- support for Python's keyword argument syntax + +- support for both explicitly specified and automatically generated docstrings + +- access to a C++ class's protected methods + +- the ability to define a Python class that is a sub-class of a C++ class, + including abstract C++ classes + +- Python sub-classes can implement the :meth:`__dtor__` method which will be + called from the C++ class's virtual destructor + +- support for ordinary C++ functions, class methods, static class methods, + virtual class methods and abstract class methods + +- the ability to re-implement C++ virtual and abstract methods in Python + +- support for global and class variables + +- support for global and class operators + +- support for C++ namespaces + +- support for C++ templates + +- support for C++ exceptions and wrapping them as Python exceptions + +- the automatic generation of complementary rich comparison slots + +- support for deprecation warnings + +- the ability to define mappings between C++ classes and similar Python data + types that are automatically invoked + +- the ability to automatically exploit any available run time type information + to ensure that the class of a Python instance object matches the class of the + corresponding C++ instance + +- the ability to change the type and meta-type of the Python object used to + wrap a C/C++ data type + +- full support of the Python global interpreter lock, including the ability to + specify that a C++ function of method may block, therefore allowing the lock + to be released and other Python threads to run + +- support for consolidated modules where the generated wrapper code for a + number of related modules may be included in a single, possibly private, + module + +- support for the concept of ownership of a C++ instance (i.e. what part of the + code is responsible for calling the instance's destructor) and how the + ownership may change during the execution of an application + +- the ability to generate bindings for a C++ class library that itself is built + on another C++ class library which also has had bindings generated so that + the different bindings integrate and share code properly + +- a sophisticated versioning system that allows the full lifetime of a C++ + class library, including any platform specific or optional features, to be + described in a single set of specification files + +- the ability to include documentation in the specification files which can be + extracted and subsequently processed by external tools + +- the ability to include copyright notices and licensing information in the + specification files that is automatically included in all generated source + code + +- a build system, written in Python, that you can extend to configure, compile + and install your own bindings without worrying about platform specific issues + +- support for building your extensions using distutils + +- SIP, and the bindings it produces, runs under UNIX, Linux, Windows and + MacOS/X + + +SIP Components +-------------- + +SIP comprises a number of different components. + +- The SIP code generator (:program:`sip`). This processes :file:`.sip` + specification files and generates C or C++ bindings. It is covered in detail + in :ref:`ref-using`. + +- The SIP header file (:file:`sip.h`). This contains definitions and data + structures needed by the generated C and C++ code. + +- The SIP module (:file:`sip.so` or :file:`sip.pyd`). This is a Python + extension module that is imported automatically by SIP generated bindings and + provides them with some common utility functions. See also + :ref:`ref-python-api`. + +- The SIP build system (:file:`sipconfig.py`). This is a pure Python module + that is created when SIP is configured and encapsulates all the necessary + information about your system including relevant directory names, compiler + and linker flags, and version numbers. It also includes several Python + classes and functions which help you write configuration scripts for your own + bindings. It is covered in detail in :ref:`ref-build-system`. + +- The SIP distutils extension (:file:`sipdistutils.py`). This is a distutils + extension that can be used to build your extension modules using distutils + and is an alternative to writing configuration scripts with the SIP build + system. This can be as simple as adding your .sip files to the list of files + needed to build the extension module. It is covered in detail in + :ref:`ref-distutils`. + + +Qt Support +---------- + +SIP has specific support for the creation of bindings based on Nokia's Qt +toolkit. + +The SIP code generator understands the signal/slot type safe callback mechanism +that Qt uses to connect objects together. This allows applications to define +new Python signals, and allows any Python callable object to be used as a slot. + +SIP itself does not require Qt to be installed. |