80 lines
2 KiB
Rust
80 lines
2 KiB
Rust
// Copyright 2018 Mozilla
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//
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// Licensed under the Apache License, Version 2.0 (the "License"); you may not use
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// this file except in compliance with the License. You may obtain a copy of the
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// License at http://www.apache.org/licenses/LICENSE-2.0
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// Unless required by applicable law or agreed to in writing, software distributed
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// under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
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// CONDITIONS OF ANY KIND, either express or implied. See the License for the
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// specific language governing permissions and limitations under the License.
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use std; // To refer to std::result::Result.
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use db_traits::errors::DbError;
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use failure::{ Backtrace, Context, Fail, };
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use core_traits::Entid;
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use std::fmt;
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pub type Result<T> = std::result::Result<T, PullError>;
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#[derive(Debug)]
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pub struct PullErrorKind(Box<Context<PullErrorKind>>);
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impl Fail for PullError {
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#[inline]
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fn cause(&self) -> Option<&dyn Fail> {
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self.0.cause()
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}
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#[inline]
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fn backtrace(&self) -> Option<&Backtrace> {
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self.0.backtrace()
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}
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}
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impl fmt::Display for PullError {
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#[inline]
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fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
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fmt::Display::fmt(&*self.0, f)
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}
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}
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impl PullError {
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#[inline]
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pub fn kind(&self) -> &PullErrorKind {
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&*self.0.get_context()
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}
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}
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impl From<PullErrorKind> for PullError {
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#[inline]
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fn from(kind: PullErrorKind) -> PullError {
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PullErrorKind(Box::new(Context::new(kind)))
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}
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}
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#[derive(Debug, Fail)]
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pub enum PullError {
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#[fail(display = "attribute {:?} has no name", _0)]
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UnnamedAttribute(Entid),
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#[fail(display = ":db/id repeated")]
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RepeatedDbId,
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#[fail(display = "{}", _0)]
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DbError(#[cause] DbError),
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}
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impl From<DbError> for PullErrorKind {
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fn from(error: DbError) -> PullErrorKind {
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PullErrorKind::DbError(error)
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}
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}
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impl From<DbError> for PullError {
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fn from(error: DbError) -> PullError {
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PullErrorKind::from(error).into()
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}
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}
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