error_impl.rs.html -- source

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backtrace

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symbolize

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cfg_if

cookie

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cookie_store

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crc32fast

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list.rs mod.rs queue.rs

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crossbeam_queue

array_queue.rs err.rs lib.rs seg_queue.rs

crossbeam_utils

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sync

mod.rs parker.rs sharded_lock.rs wait_group.rs

backoff.rs cache_padded.rs lib.rs thread.rs

curl

easy

form.rs handle.rs handler.rs list.rs mod.rs windows.rs

error.rs lib.rs multi.rs panic.rs version.rs

curl_sys

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diyfp.rs dtoa.rs lib.rs

either

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error_chain

backtrace.rs error_chain.rs impl_error_chain_kind.rs lib.rs quick_main.rs

failure

backtrace

internal.rs mod.rs

error

error_impl.rs mod.rs

as_fail.rs box_std.rs compat.rs context.rs error_message.rs lib.rs macros.rs result_ext.rs sync_failure.rs

failure_derive

flate2

deflate

bufread.rs mod.rs read.rs write.rs

ffi

gz

bufread.rs mod.rs read.rs write.rs

zlib

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bufreader.rs crc.rs lib.rs mem.rs zio.rs

fnv

foreign_types

foreign_types_shared

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future

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stream

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mpsc

mod.rs queue.rs

bilock.rs mod.rs oneshot.rs

task_impl

std

data.rs mod.rs task_rc.rs unpark_mutex.rs

atomic_task.rs core.rs mod.rs

unsync

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executor.rs lib.rs lock.rs poll.rs resultstream.rs task.rs

futures_cpupool

goauth

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h2

http

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uri

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client

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io

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proto

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h2

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server

conn.rs mod.rs shutdown.rs tcp.rs

service

make_service.rs mod.rs new_service.rs service.rs

error.rs headers.rs lib.rs rt.rs upgrade.rs

hyper_tls

client.rs lib.rs stream.rs

idna

lib.rs punycode.rs uts46.rs

indexmap

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iovec

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inline_lazy.rs lib.rs

libc

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linux_like

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b64

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align.rs mod.rs

align.rs mod.rs

align.rs mod.rs

fixed_width_ints.rs lib.rs macros.rs

libz_sys

lock_api

lib.rs mutex.rs remutex.rs rwlock.rs

log

lib.rs macros.rs

matches

maybe_uninit

memoffset

lib.rs offset_of.rs span_of.rs

mime

lib.rs parse.rs

mime_guess

impl_bin_search.rs lib.rs

miniz_oxide

deflate

buffer.rs core.rs mod.rs stream.rs

inflate

core.rs mod.rs output_buffer.rs stream.rs

lib.rs shared.rs

mio

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imp

net2

sys

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impls.rs mod.rs

ext.rs lib.rs socket.rs tcp.rs udp.rs unix.rs utils.rs

num_cpus

num_traits

openssl

openssl_probe

openssl_sys

parking_lot

condvar.rs deadlock.rs elision.rs lib.rs mutex.rs once.rs raw_mutex.rs raw_rwlock.rs remutex.rs rwlock.rs util.rs

parking_lot_core

thread_parker

linux.rs mod.rs

lib.rs parking_lot.rs spinwait.rs util.rs word_lock.rs

percent_encoding

proc_macro2

fallback.rs lib.rs strnom.rs wrapper.rs

protobuf

protobuf_json

publicsuffix

errors.rs lib.rs

quote

ext.rs format.rs ident_fragment.rs lib.rs runtime.rs spanned.rs to_tokens.rs

rand

rand_chacha

chacha.rs lib.rs

rand_core

rand_hc

hc128.rs lib.rs

rand_isaac

isaac.rs isaac64.rs isaac_array.rs lib.rs

rand_jitter

dummy_log.rs error.rs lib.rs platform.rs

rand_os

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rand_pcg

lib.rs pcg128.rs pcg64.rs

rand_xorshift

regex

literal

backtrack.rs cache.rs compile.rs error.rs exec.rs expand.rs find_byte.rs input.rs lib.rs pikevm.rs prog.rs re_builder.rs re_bytes.rs re_set.rs re_trait.rs re_unicode.rs sparse.rs utf8.rs

regex_syntax

ast

mod.rs parse.rs print.rs visitor.rs

hir

literal

interval.rs mod.rs print.rs translate.rs visitor.rs

unicode_tables

either.rs error.rs lib.rs parser.rs unicode.rs utf8.rs

reqwest

rustc_demangle

legacy.rs lib.rs v0.rs

rustc_serialize

base64.rs collection_impls.rs hex.rs json.rs lib.rs serialize.rs

ryu

buffer

pretty

exponent.rs mantissa.rs mod.rs

common.rs d2s.rs d2s_full_table.rs d2s_intrinsics.rs digit_table.rs f2s.rs lib.rs

scopeguard

serde

de

from_primitive.rs ignored_any.rs impls.rs mod.rs utf8.rs value.rs

private

de.rs macros.rs mod.rs ser.rs

ser

impls.rs impossible.rs mod.rs

export.rs integer128.rs lib.rs macros.rs

serde_codegen_internals

ast.rs attr.rs case.rs ctxt.rs lib.rs

serde_derive

internals

ast.rs attr.rs case.rs check.rs ctxt.rs mod.rs symbol.rs

bound.rs de.rs dummy.rs fragment.rs lib.rs pretend.rs ser.rs try.rs

serde_json

value

de.rs from.rs index.rs mod.rs partial_eq.rs ser.rs

de.rs error.rs iter.rs lib.rs macros.rs map.rs number.rs read.rs ser.rs

serde_urlencoded

ser

key.rs mod.rs pair.rs part.rs value.rs

slab

smallvec

smpl_jwt

error.rs lib.rs

socket2

sys

lib.rs sockaddr.rs socket.rs utils.rs

string

syn

synom

helper.rs lib.rs space.rs

synstructure

lib.rs macros.rs

time

display.rs duration.rs lib.rs parse.rs sys.rs

tokio

executor

current_thread

reactor

mod.rs poll_evented.rs

runtime

current_thread

builder.rs mod.rs runtime.rs

threadpool

builder.rs mod.rs shutdown.rs task_executor.rs

util

enumerate.rs future.rs mod.rs stream.rs

clock.rs io.rs lib.rs net.rs prelude.rs timer.rs

tokio_buf

util

chain.rs collect.rs from.rs iter.rs limit.rs mod.rs stream.rs

lib.rs never.rs size_hint.rs str.rs u8.rs

tokio_current_thread

lib.rs scheduler.rs

tokio_executor

enter.rs error.rs executor.rs global.rs lib.rs park.rs typed.rs

tokio_io

tokio_reactor

background.rs lib.rs poll_evented.rs registration.rs sharded_rwlock.rs

tokio_sync

mpsc

block.rs bounded.rs chan.rs list.rs mod.rs unbounded.rs

task

atomic_task.rs mod.rs

lib.rs lock.rs loom.rs oneshot.rs semaphore.rs watch.rs

tokio_tcp

incoming.rs lib.rs listener.rs stream.rs

tokio_threadpool

tokio_timer

try_from

char.rs int.rs lib.rs

try_lock

unicase

unicode

ascii.rs lib.rs

unicode_bidi

char_data

mod.rs tables.rs

deprecated.rs explicit.rs format_chars.rs implicit.rs level.rs lib.rs prepare.rs

unicode_normalization

__test_api.rs decompose.rs lib.rs lookups.rs normalize.rs perfect_hash.rs quick_check.rs recompose.rs stream_safe.rs tables.rs

unicode_xid

lib.rs tables.rs

url

form_urlencoded.rs host.rs lib.rs origin.rs parser.rs path_segments.rs query_encoding.rs quirks.rs slicing.rs

uuid

adapter

core_support

parser

core_support.rs mod.rs std_support.rs

builder.rs core_support.rs lib.rs prelude.rs std_support.rs v4.rs

want

use core::any::TypeId;

use Fail;
use backtrace::Backtrace;

pub(crate) struct ErrorImpl {
    inner: Box<Inner<dyn Fail>>,
}

struct Inner<F: ?Sized + Fail> {
    backtrace: Backtrace,
    pub(crate) failure: F,
}

impl<F: Fail> From<F> for ErrorImpl {
    fn from(failure: F) -> ErrorImpl {
        let inner: Inner<F> = {
            let backtrace = if failure.backtrace().is_none() {
                Backtrace::new()
            } else { Backtrace::none() };
            Inner { failure, backtrace }
        };
        ErrorImpl { inner: Box::new(inner) }
    }
}

impl ErrorImpl {
    pub(crate) fn failure(&self) -> &dyn Fail {
        &self.inner.failure
    }

    pub(crate) fn failure_mut(&mut self) -> &mut dyn Fail {
        &mut self.inner.failure
    }

    pub(crate) fn backtrace(&self) -> &Backtrace {
        &self.inner.backtrace
    }

    pub(crate) fn downcast<T: Fail>(self) -> Result<T, ErrorImpl> {
        if self.failure().__private_get_type_id__() == TypeId::of::<T>() {
            let ErrorImpl { inner } = self;
            let casted = unsafe { Box::from_raw(Box::into_raw(inner) as *mut Inner<T>) };
            let Inner { backtrace:_, failure } = *casted;
            Ok(failure)
        } else {
            Err(self)
        }
    }
}