#     Copyright 2015, Kay Hayen, mailto:kay.hayen@gmail.com
#
#     Part of "Nuitka", an optimizing Python compiler that is compatible and
#     integrates with CPython, but also works on its own.
#
#     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.
#
""" Main module code templates

This for the main program in case of executables, the module templates and
stuff related to importing, and of course the generated code license.

"""

template_global_copyright = """\
// Generated code for Python source for module '%(name)s'
// created by Nuitka version %(version)s

// This code is in part copyright %(year)s Kay Hayen.
//
// 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.
"""

template_metapath_loader_compiled_module_entry = """\
{ (char *)"%(module_name)s", MOD_INIT_NAME( %(module_identifier)s ), NUITKA_COMPILED_MODULE },"""

template_metapath_loader_compiled_package_entry = """\
{ (char *)"%(module_name)s", MOD_INIT_NAME( %(module_identifier)s ), NUITKA_COMPILED_PACKAGE },"""

template_metapath_loader_shlib_module_entry = """\
{ (char *)"%(module_name)s", NULL, NUITKA_SHLIB_MODULE },"""



template_module_body_template = """
#include "nuitka/prelude.hpp"

#include "__helpers.hpp"

// The _module_%(module_identifier)s is a Python object pointer of module type.

// Note: For full compatibility with CPython, every module variable access
// needs to go through it except for cases where the module cannot possibly
// have changed in the mean time.

PyObject *module_%(module_identifier)s;
PyDictObject *moduledict_%(module_identifier)s;

// The module constants used
%(constant_decl_codes)s

static void _initModuleConstants( void )
{
%(constant_init_codes)s
}

#ifndef __NUITKA_NO_ASSERT__
void checkModuleConstants_%(module_identifier)s( void )
{
%(constant_check_codes)s
}
#endif

// The module code objects.
%(module_code_objects_decl)s

static void _initModuleCodeObjects(void)
{
%(module_code_objects_init)s
}

// The module function declarations.
%(module_functions_decl)s

// The module function definitions.
%(module_functions_code)s


#if PYTHON_VERSION >= 300
static struct PyModuleDef mdef_%(module_identifier)s =
{
    PyModuleDef_HEAD_INIT,
    "%(module_name)s",   /* m_name */
    NULL,                /* m_doc */
    -1,                  /* m_size */
    NULL,                /* m_methods */
    NULL,                /* m_reload */
    NULL,                /* m_traverse */
    NULL,                /* m_clear */
    NULL,                /* m_free */
  };
#endif

#define _MODULE_UNFREEZER %(use_unfreezer)d

#if _MODULE_UNFREEZER

#include "nuitka/unfreezing.hpp"

// Table for lookup to find "frozen" modules or DLLs, i.e. the ones included in
// or along this binary.
%(metapath_module_decls)s
static struct Nuitka_MetaPathBasedLoaderEntry meta_path_loader_entries[] =
{
%(metapath_loader_inittab)s
    { NULL, NULL, 0 }
};

#endif

// The exported interface to CPython. On import of the module, this function
// gets called. It has to have an exact function name, in cases it's a shared
// library export. This is hidden behind the MOD_INIT_DECL.

MOD_INIT_DECL( %(module_identifier)s )
{
#if defined(_NUITKA_EXE) || PYTHON_VERSION >= 300
    static bool _init_done = false;

    // Modules might be imported repeatedly, which is to be ignored.
    if ( _init_done )
    {
        return MOD_RETURN_VALUE( module_%(module_identifier)s );
    }
    else
    {
        _init_done = true;
    }
#endif

#ifdef _NUITKA_MODULE
    // In case of a stand alone extension module, need to call initialization
    // the init here because that's the first and only time we are going to get
    // called here.

    // Initialize the constant values used.
    _initBuiltinModule();
    createGlobalConstants();

    // Initialize the compiled types of Nuitka.
    PyType_Ready( &Nuitka_Generator_Type );
    PyType_Ready( &Nuitka_Function_Type );
    PyType_Ready( &Nuitka_Method_Type );
    PyType_Ready( &Nuitka_Frame_Type );
#if PYTHON_VERSION < 300
    _initSlotCompare();
#endif
#if PYTHON_VERSION >= 270
    _initSlotIternext();
#endif

    patchBuiltinModule();
    patchTypeComparison();

#endif

#if _MODULE_UNFREEZER
    registerMetaPathBasedUnfreezer( meta_path_loader_entries );
#endif

    _initModuleConstants();
    _initModuleCodeObjects();

    // puts( "in init%(module_identifier)s" );

    // Create the module object first. There are no methods initially, all are
    // added dynamically in actual code only.  Also no "__doc__" is initially
    // set at this time, as it could not contain NUL characters this way, they
    // are instead set in early module code.  No "self" for modules, we have no
    // use for it.
#if PYTHON_VERSION < 300
    module_%(module_identifier)s = Py_InitModule4(
        "%(module_name)s",       // Module Name
        NULL,                    // No methods initially, all are added
                                 // dynamically in actual module code only.
        NULL,                    // No __doc__ is initially set, as it could
                                 // not contain NUL this way, added early in
                                 // actual code.
        NULL,                    // No self for modules, we don't use it.
        PYTHON_API_VERSION
    );
#else
    module_%(module_identifier)s = PyModule_Create( &mdef_%(module_identifier)s );
#endif

    moduledict_%(module_identifier)s = (PyDictObject *)((PyModuleObject *)module_%(module_identifier)s)->md_dict;

    CHECK_OBJECT( module_%(module_identifier)s );

// Seems to work for Python2.7 out of the box, but for Python3, the module
// doesn't automatically enter "sys.modules", so do it manually.
#if PYTHON_VERSION >= 300
    {
        int r = PyObject_SetItem( PySys_GetObject( (char *)"modules" ), %(module_name_obj)s, module_%(module_identifier)s );

        assert( r != -1 );
    }
#endif

    // For deep importing of a module we need to have "__builtins__", so we set
    // it ourselves in the same way than CPython does. Note: This must be done
    // before the frame object is allocated, or else it may fail.

    PyObject *module_dict = PyModule_GetDict( module_%(module_identifier)s );

    if ( PyDict_GetItem( module_dict, const_str_plain___builtins__ ) == NULL )
    {
        PyObject *value = (PyObject *)builtin_module;

        // Check if main module, not a dict then.
#if !defined(_NUITKA_EXE) || !%(is_main_module)s
        value = PyModule_GetDict( value );
#endif

#ifndef __NUITKA_NO_ASSERT__
        int res =
#endif
            PyDict_SetItem( module_dict, const_str_plain___builtins__, value );

        assert( res == 0 );
    }

#if PYTHON_VERSION >= 330
#if _MODULE_UNFREEZER
    PyDict_SetItem( module_dict, const_str_plain___loader__, metapath_based_loader );
#else
    PyDict_SetItem( module_dict, const_str_plain___loader__, Py_None );
#endif
#endif

    // Temp variables if any
%(temps_decl)s

    // Module code.
%(module_code)s

    return MOD_RETURN_VALUE( module_%(module_identifier)s );
%(module_exit)s
"""

template_module_exception_exit = """\
    module_exception_exit:
    RESTORE_ERROR_OCCURRED( exception_type, exception_value, exception_tb );
    return MOD_RETURN_VALUE( NULL );
}"""

template_module_noexception_exit = """\
}"""

template_helper_impl_decl = """\
// This file contains helper functions that are automatically created from
// templates.

#include "nuitka/prelude.hpp"

extern PyObject *callPythonFunction( PyObject *func, PyObject **args, int count );

"""

template_header_guard = """\
#ifndef %(header_guard_name)s
#define %(header_guard_name)s

%(header_body)s
#endif
"""

from . import TemplateDebugWrapper # isort:skip
TemplateDebugWrapper.checkDebug(globals())
