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#[macro_use]
extern crate enum_display_derive;
mod convert;
mod internal;
pub mod util;
use failure::{Backtrace, Context, Fail};
pub use internal::{InternalError, InternalErrorKind};
use std::fmt::{self, Display};
#[derive(Debug, Clone, Copy, Eq, PartialEq, Display)]
pub enum ErrorKind {
OutPoint,
Transaction,
SubmitTransaction,
Script,
Header,
Block,
Internal,
Dao,
Spec,
}
#[derive(Debug)]
pub struct Error {
kind: Context<ErrorKind>,
}
impl fmt::Display for Error {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
if let Some(cause) = self.cause() {
if f.alternate() {
write!(f, "{}: {}", self.kind(), cause)
} else {
write!(f, "{}({})", self.kind(), cause)
}
} else {
write!(f, "{}", self.kind())
}
}
}
impl From<Context<ErrorKind>> for Error {
fn from(inner: Context<ErrorKind>) -> Self {
Self { kind: inner }
}
}
impl Fail for Error {
fn cause(&self) -> Option<&dyn Fail> {
self.kind.cause()
}
fn backtrace(&self) -> Option<&Backtrace> {
self.kind.backtrace()
}
}
impl Error {
pub fn kind(&self) -> &ErrorKind {
self.kind.get_context()
}
pub fn downcast_ref<T: Fail>(&self) -> Option<&T> {
self.cause().and_then(|cause| cause.downcast_ref::<T>())
}
pub fn unwrap_cause_or_self(&self) -> &dyn Fail {
self.cause().unwrap_or(self)
}
}