#     Copyright 2013, Kay Hayen, mailto:kay.hayen@gmail.com
#
#     Python tests originally created or extracted from other peoples work. The
#     parts were too small to be protected.
#
#     Licensed under the Apache License, Version 2.0 (the "License");
#     you may not use this file except in compliance with the License.
#     You may obtain a copy of the License at
#
#        http://www.apache.org/licenses/LICENSE-2.0
#
#     Unless required by applicable law or agreed to in writing, software
#     distributed under the License is distributed on an "AS IS" BASIS,
#     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
#     See the License for the specific language governing permissions and
#     limitations under the License.
#

def kwonlysimple( *, a ):
    return a

print( "Most simple case", kwonlysimple( a = 3 ) )

def kwonlysimpledefaulted( *, a = 5 ):
    return a

print( "Default simple case", kwonlysimpledefaulted() )


def default1():
    print( "Called", default1 )
    return 1

def default2():
    print( "Called", default2 )

    return 2

def default3():
    print( "Called", default3 )
    return 3

def default4():
    print( "Called", default4 )

    return 4

def annotation1():
    print ( "Called", annotation1 )

    return "a1"

def annotation2():
    print ( "Called", annotation2 )

    return "a2"

def annotation3():
    print ( "Called", annotation3 )

    return "a3"

def annotation4():
    print ( "Called", annotation4 )

    return "a4"

def annotation5():
    print ( "Called", annotation5 )

    return "a5"

def annotation6():
    print ( "Called", annotation6 )

    return "a6"

def annotation7():
    print ( "Called", annotation7 )

    return "a7"

def annotation8():
    print ( "Called", annotation8 )

    return "a8"

def annotation9():
    print ( "Called", annotation9 )

    return "a9"

def kwonlyfunc( x: annotation1(), y: annotation2() = default1(), z: annotation3() = default2(), *, a: annotation4(), b: annotation5() = default3(), c: annotation6() = default4(), d: annotation7(), **kw: annotation8() ) -> annotation9():
    print( x, y, z, a, b, c, d )

print( kwonlyfunc.__kwdefaults__ )

print( "Keyword only function" )
kwonlyfunc( 7, a = 8, d = 12 )

print( "Annotations come out as", kwonlyfunc.__annotations__ )
kwonlyfunc.__annotations__ = {}
print( "After updating to None it is", kwonlyfunc.__annotations__ )

kwonlyfunc.__annotations__ = { "k" : 9 }
print( "After updating to None it is", kwonlyfunc.__annotations__ )

def kwonlystarfunc( *, a, b, **d ):
    return a, b, d

print( "kwonlystarfunc", kwonlystarfunc( a = 8, b = 12, k = 9, j = 7 ) )

def deeplyNestedNonLocalWrite():
    x = 0
    y = 0
    def f():
        def g():
            nonlocal x

            x = 3

            return x

        return g()
    return f(), x

print( "Deeply nested non local writing function", deeplyNestedNonLocalWrite() )

def deletingClosureVariables():
    try:
        x = 1

        def g():
            nonlocal x

            del x

        g()
        g()
    except Exception as e:
        return e

print( "Using deleted non-local vaiables", deletingClosureVariables() )