use std::fmt::Display;
pub type Result<T> = std::result::Result<T, Error>;
#[derive(Clone)]
pub enum Error {
Null,
InvalidBlockName(String),
DuplicatedBlockName(String),
InvalidStoreName(String),
DuplicatedStoreName(String),
DuplicatedCommandName(String),
Error(String),
}
impl Default for Error {
fn default() -> Self {
Self::Null
}
}
impl std::fmt::Debug for Error {
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
write!(f, "{}", self.display())
}
}
impl std::error::Error for Error {
fn source(&self) -> Option<&(dyn std::error::Error + 'static)> {
None
}
fn cause(&self) -> Option<&dyn std::error::Error> {
self.source()
}
}
impl Display for Error {
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
write!(f, "{}", self.display())
}
}
impl Error {
pub fn raise(msg: String) -> Self {
Self::Error(msg)
}
pub fn display(&self) -> String {
match self {
Error::Null => {
panic!("Can not use Error::Null")
}
Error::InvalidBlockName(name) => {
format!("Invalid block name {}", name)
}
Error::DuplicatedBlockName(name) => {
format!("Duplicated block name {}", name)
}
Error::InvalidStoreName(name) => {
format!("Invalid store name {}", name)
}
Error::DuplicatedStoreName(name) => {
format!("Duplicated store name {}", name)
}
Error::DuplicatedCommandName(name) => {
format!("Duplicated command name {}", name)
}
Error::Error(msg) => msg.clone(),
}
}
}