#     Copyright 2023, 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.
#
""" Generator function (with yield) related templates.

"""

template_genfunc_yielder_maker_decl = """\
static PyObject *%(generator_maker_identifier)s(%(generator_creation_args)s);
"""

template_genfunc_yielder_body_template = """
#if %(has_heap_declaration)s
struct %(function_identifier)s_locals {
%(function_local_types)s
};
#endif

static PyObject *%(function_identifier)s_context(PyThreadState *tstate, struct Nuitka_GeneratorObject *generator, PyObject *yield_return_value) {
    CHECK_OBJECT(generator);
    assert(Nuitka_Generator_Check((PyObject *)generator));
    CHECK_OBJECT_X(yield_return_value);

#if %(has_heap_declaration)s
    // Heap access.
%(heap_declaration)s
#endif

    // Dispatch to yield based on return label index:
%(function_dispatch)s

    // Local variable initialization
%(function_var_inits)s

    // Actual generator function body.
%(function_body)s

%(generator_exit)s
}

static PyObject *%(generator_maker_identifier)s(%(generator_creation_args)s) {
    return Nuitka_Generator_New(
        %(function_identifier)s_context,
        %(generator_module)s,
        %(generator_name_obj)s,
#if PYTHON_VERSION >= 0x350
        %(generator_qualname_obj)s,
#endif
        %(code_identifier)s,
        %(closure_name)s,
        %(closure_count)d,
#if %(has_heap_declaration)s
        sizeof(struct %(function_identifier)s_locals)
#else
        0
#endif
    );
}
"""

template_make_generator = """\
%(closure_copy)s
%(to_name)s = %(generator_maker_identifier)s(%(args)s);
"""

template_make_empty_generator = """\
%(closure_copy)s
%(to_name)s = Nuitka_Generator_NewEmpty(
    %(generator_module)s,
    %(generator_name_obj)s,
#if PYTHON_VERSION >= 0x350
    %(generator_qualname_obj)s,
#endif
    %(code_identifier)s,
    %(closure_name)s,
    %(closure_count)d
);
"""


template_generator_exception_exit = """\
%(function_cleanup)s
    return NULL;

    function_exception_exit:
%(function_cleanup)s
    assert(%(exception_type)s);
    RESTORE_ERROR_OCCURRED(tstate, %(exception_type)s, %(exception_value)s, %(exception_tb)s);

    return NULL;
"""

template_generator_noexception_exit = """\
    // Return statement need not be present.
%(function_cleanup)s
    return NULL;
"""

template_generator_return_exit = """\
    NUITKA_CANNOT_GET_HERE("Generator must have exited already.");
    return NULL;

    function_return_exit:
#if PYTHON_VERSION >= 0x300
    generator->m_returned = %(return_value)s;
#endif

%(function_cleanup)s
    return NULL;
"""


from . import TemplateDebugWrapper  # isort:skip

TemplateDebugWrapper.checkDebug(globals())
