130 lines
3.3 KiB
Plaintext
130 lines
3.3 KiB
Plaintext
[section boost/python/function_doc_signature.hpp]
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[section Introduction]
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Boost.Python supports docstrings with automatic appending of Pythonic and C++ signatures. This feature is implemented by class `function_doc_signature_generator`. The class uses all of the overloads, supplied arg names and default values, as well as the user-defined docstrings, to generate documentation for a given function.
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[endsect]
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[section Class `function_doc_signature_generator`]
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The class has only one public function which returns a list of strings documenting the overloads of a function.
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``
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namespace boost { namespace python { namespace objects {
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class function_doc_signature_generator
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{
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public:
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static list function_doc_signatures(function const *f);
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};
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}}}
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``
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[endsect]
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[section Example]
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``
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#include <boost/python/module.hpp>
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#include <boost/python/def.hpp>
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#include <boost/python/args.hpp>
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#include <boost/python/tuple.hpp>
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#include <boost/python/class.hpp>
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#include <boost/python/overloads.hpp>
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#include <boost/python/raw_function.hpp>
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using namespace boost::python;
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tuple f(int x = 1, double y = 4.25, char const* z = "wow")
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{
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return make_tuple(x, y, z);
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}
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BOOST_PYTHON_FUNCTION_OVERLOADS(f_overloads, f, 0, 3)
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struct X
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{
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tuple f(int x = 1, double y = 4.25, char const* z = "wow")
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{
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return make_tuple(x, y, z);
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}
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};
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BOOST_PYTHON_MEMBER_FUNCTION_OVERLOADS(X_f_overloads, X::f, 0, 3)
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tuple raw_func(tuple args, dict kw)
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{
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return make_tuple(args, kw);
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}
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BOOST_PYTHON_MODULE(args_ext)
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{
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def("f", f, (arg("x")=1, arg("y")=4.25, arg("z")="wow")
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, "This is f's docstring"
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);
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def("raw", raw_function(raw_func));
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def("f1", f, f_overloads("f1's docstring", args("x", "y", "z")));
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class_<X>("X", "This is X's docstring", init<>(args("self")))
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.def("f", &X::f
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, "This is X.f's docstring"
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, args("self","x", "y", "z"))
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;
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}
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``
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Python code: [python]
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``
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>>> import args_ext
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>>> help(args_ext)
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Help on module args_ext:
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NAME
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args_ext
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FILE
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args_ext.pyd
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CLASSES
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Boost.Python.instance(__builtin__.object)
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X
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class X(Boost.Python.instance)
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| This is X's docstring
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| Method resolution order:
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| X
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| Boost.Python.instance
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| __builtin__.object
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| Methods defined here:
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| __init__(...)
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| __init__( (object)self) -> None :
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| C++ signature:
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| void __init__(struct _object *)
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| f(...)
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| f( (X)self, (int)x, (float)y, (str)z) -> tuple : This is X.f's docstring
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| C++ signature:
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| class boost::python::tuple f(struct X {lvalue},int,double,char const *)
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| .................
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FUNCTIONS
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f(...)
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f([ (int)x=1 [, (float)y=4.25 [, (str)z='wow']]]) -> tuple : This is f's docstring
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C++ signature:
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class boost::python::tuple f([ int=1 [,double=4.25 [,char const *='wow']]])
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f1(...)
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f1([ (int)x [, (float)y [, (str)z]]]) -> tuple : f1's docstring
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C++ signature:
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class boost::python::tuple f1([ int [,double [,char const *]]])
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raw(...)
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object raw(tuple args, dict kwds) :
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C++ signature:
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object raw(tuple args, dict kwds)
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``
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[endsect]
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[endsect]
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