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use std::cell::RefCell;
use std::error::Error as StdError;
use std::fmt;
use std::rc::Rc;
use crate::spec::Spec;
#[derive(Clone)]
pub struct SpecErr<C> {
pub spec: Rc<RefCell<Spec<C>>>,
pub msg: String
}
impl<C> fmt::Display for SpecErr<C> {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
f.write_fmt(format_args!("spec"))
}
}
#[derive(Clone)]
pub enum ErrKind<C> {
MissArg(SpecErr<C>),
MissSpec(String),
BadContext(String),
UnknownOpt(String),
Collision(String)
}
impl<C> StdError for ErrKind<C> {}
impl<C> fmt::Display for ErrKind<C> {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
match &*self {
ErrKind::MissArg(s) => {
f.write_fmt(format_args!("Missing argument ({})", s))
}
ErrKind::MissSpec(s) => {
f.write_fmt(format_args!("Missing argspec; {}", s))
}
ErrKind::BadContext(s) => {
f.write_fmt(format_args!("Bad context; {}", s))
}
ErrKind::UnknownOpt(s) => {
f.write_fmt(format_args!("Unknown option; {}", s))
}
ErrKind::Collision(s) => {
f.write_fmt(format_args!("Colliding options; {}", s))
}
}
}
}
impl<C> fmt::Debug for ErrKind<C> {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
match &*self {
ErrKind::MissArg(s) => {
f.write_fmt(format_args!("Missing argument ({})", s))
}
ErrKind::MissSpec(s) => {
f.write_fmt(format_args!("Missing argspec; {}", s))
}
ErrKind::BadContext(s) => {
f.write_fmt(format_args!("Bad context; {}", s))
}
ErrKind::UnknownOpt(s) => {
f.write_fmt(format_args!("Unknown option; {}", s))
}
ErrKind::Collision(s) => {
f.write_fmt(format_args!("Colliding options; {}", s))
}
}
}
}