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// Licensed to the Apache Software Foundation (ASF) under one
// or more contributor license agreements.  See the NOTICE file
// distributed with this work for additional information
// regarding copyright ownership.  The ASF licenses this file
// to you 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.

//! This is a fairly simple unpacked error representation that's used on
//! non-64bit targets, where the packed 64 bit representation wouldn't work, and
//! would have no benefit.

use super::{Custom, ErrorData, ErrorKind, RawOsError, SimpleMessage};
use alloc_crate::boxed::Box;

use sgx_types::error::SgxStatus;

type Inner = ErrorData<Box<Custom>>;

pub(super) struct Repr(Inner);

impl Repr {
    #[inline]
    pub(super) fn new(dat: ErrorData<Box<Custom>>) -> Self {
        Self(dat)
    }
    pub(super) fn new_custom(b: Box<Custom>) -> Self {
        Self(Inner::Custom(b))
    }
    #[inline]
    pub(super) fn new_os(code: RawOsError) -> Self {
        Self(Inner::Os(code))
    }
    #[inline]
    pub(super) fn new_simple(kind: ErrorKind) -> Self {
        Self(Inner::Simple(kind))
    }
    #[inline]
    pub(super) const fn new_simple_message(m: &'static SimpleMessage) -> Self {
        Self(Inner::SimpleMessage(m))
    }
    #[inline]
    pub(super) const fn new_sgx(status: SgxStatus) -> Self {
        Self(Inner::SgxStatus(status))
    }
    #[inline]
    pub(super) fn into_data(self) -> ErrorData<Box<Custom>> {
        self.0
    }
    #[inline]
    pub(super) fn data(&self) -> ErrorData<&Custom> {
        match &self.0 {
            Inner::Os(c) => ErrorData::Os(*c),
            Inner::Simple(k) => ErrorData::Simple(*k),
            Inner::SimpleMessage(m) => ErrorData::SimpleMessage(*m),
            Inner::Custom(m) => ErrorData::Custom(m),
            Inner::SgxStatus(s) => ErrorData::SgxStatus(*s),
        }
    }
    #[inline]
    pub(super) fn data_mut(&mut self) -> ErrorData<&mut Custom> {
        match &mut self.0 {
            Inner::Os(c) => ErrorData::Os(*c),
            Inner::Simple(k) => ErrorData::Simple(*k),
            Inner::SimpleMessage(m) => ErrorData::SimpleMessage(*m),
            Inner::Custom(m) => ErrorData::Custom(&mut *m),
            Inner::SgxStatus(s) => ErrorData::SgxStatus(*s),
        }
    }
}