Toons of changes to improve error handling.

Added attributes function.__name__, function.__signature__, and
the dir(function) feature


[SVN r8313]

gen_caller.py

@@ -31,6 +31,7 @@ body_sections = (
 # include <boost/config.hpp>
 # include "signatures.h"
 # include "none.h"
+# include "objects.h"
 
 namespace python {
 
@@ -56,9 +57,25 @@ struct caller<void>
 ''',
 '''};
 
-}
+namespace detail
+{
+                     
+// create signature tuples
+inline''',
+'''
+// member functions
+''',
+'''
+// const member functions
+''',
+'''
+// free functions
+''',
+'''} // namespace detail
 
-#endif
+} // namespace python
+
+#endif // CALLER_DWA05090_H_
 ''')
 
 #'
@@ -87,6 +104,34 @@ free_function = '''%{    template <%(class A%n%:, %)>
 
 '''
 
+function_signature = '''%{template <%}%(class A%n%:, %)%{>%}
+PyObject* function_signature(%(type<A%n>%:, %)) {
+%(    static const bool is_plain_A%n = BOOST_PYTHON_IS_PLAIN(A%n);
+%)    tuple result(%x);
+%(    result.set_item(%N, python_type_name_selector<is_plain_A%n>::get(type<A%n>()));
+%)
+    return result.reference().release();
+}
+
+'''
+
+member_function_signature = '''template <class R, class T%(, class A%n%)>
+inline PyObject* function_signature(R (T::*pmf)(%(A%n%:, %))%1) {
+    return function_signature(
+        python::type<T>()%(,
+        python::type<A%n>()%));
+}
+
+'''
+
+free_function_signature = '''template <class R%(, class A%n%)>
+inline PyObject* function_signature(R (*f)(%(A%n%:, %))) {
+    return function_signature(%(
+        python::type<A%n>()%:,%));
+}
+
+'''
+
 def gen_caller(member_function_args, free_function_args = None):
     if free_function_args is None:
         free_function_args = member_function_args + 1
@@ -118,6 +163,16 @@ def gen_caller(member_function_args, free_function_args = None):
             + gen_functions(free_function, free_function_args,
                             'void', '', return_none)
             + body_sections[6]
+
+            # create lists describing the function signatures
+            + gen_functions(function_signature, free_function_args)
+            + body_sections[7]
+            + gen_functions(member_function_signature, member_function_args, '')
+            + body_sections[8]
+            + gen_functions(member_function_signature, member_function_args, ' const')
+            + body_sections[9]
+            + gen_functions(free_function_signature, free_function_args)
+            + body_sections[10]
             )
 
 if __name__ == '__main__':