#     Copyright 2014, 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.
#

from .ErrorCodes import getErrorExitBoolCode, getErrorExitCode, getReleaseCodes


def getIntegerSubscriptLookupCode(to_name, target_name, subscript_name,
                                  subscript_value, emit, context):
    emit(
        "%s = LOOKUP_SUBSCRIPT_CONST( %s, %s, %s );" % (
            to_name,
            target_name,
            subscript_name,
            subscript_value
        )
    )

    getReleaseCodes(
        release_names = (target_name, subscript_name),
        emit          = emit,
        context       = context
    )

    getErrorExitCode(
        check_name = to_name,
        emit       = emit,
        context    = context
    )

    context.addCleanupTempName(to_name)

def getSubscriptLookupCode(to_name, subscript_name, subscribed_name, emit,
                           context):
    emit(
        "%s = LOOKUP_SUBSCRIPT( %s, %s );" % (
            to_name,
            subscribed_name,
            subscript_name,
        )
    )

    getReleaseCodes(
        release_names = (subscribed_name, subscript_name),
        emit          = emit,
        context       = context
    )

    getErrorExitCode(
        check_name = to_name,
        emit       = emit,
        context    = context
    )

    context.addCleanupTempName(to_name)


def getIntegerSubscriptAssignmentCode(subscribed_name, subscript_name,
                                      subscript_value, value_name, emit,
                                      context):
    assert abs(subscript_value) < 2**31

    res_name = context.allocateTempName("ass_subscript_res", "int")

    emit(
        "%s = SET_SUBSCRIPT_CONST( %s, %s, %s, %s );" % (
            res_name,
            subscribed_name,
            subscript_name,
            subscript_value,
            value_name,
        )
    )

    getReleaseCodes(
        release_names = (subscribed_name, value_name),
        emit          = emit,
        context       = context
    )

    getErrorExitBoolCode(
        condition = "%s == false" % res_name,
        emit      = emit,
        context   = context
    )

def getSubscriptAssignmentCode(target_name, subscript_name, value_name,
                               emit, context):
    res_name = context.getBoolResName()

    emit(
        "%s = SET_SUBSCRIPT( %s, %s, %s );" % (
            res_name,
            target_name,
            subscript_name,
            value_name,
        )
    )

    getReleaseCodes(
        release_names = (target_name, subscript_name, value_name),
        emit          = emit,
        context       = context
    )

    getErrorExitBoolCode(
        condition = "%s == false" % res_name,
        emit      = emit,
        context   = context
    )


def getSubscriptDelCode(target_name, subscript_name, emit, context):
    res_name = context.getBoolResName()

    emit(
        "%s = DEL_SUBSCRIPT( %s, %s );" % (
            res_name,
            target_name,
            subscript_name,
        )
    )

    getReleaseCodes(
        release_names = (target_name, subscript_name),
        emit          = emit,
        context       = context
    )

    getErrorExitBoolCode(
        condition = "%s == false" % res_name,
        emit      = emit,
        context   = context
    )
