use std::error::Error;
use std::fmt::Debug;
use downcast_rs::Downcast;
pub trait ValicoError: Downcast + Error + Send + Debug + erased_serde::Serialize {
fn get_code(&self) -> &str;
fn get_path(&self) -> &str;
fn get_title(&self) -> &str;
fn get_detail(&self) -> Option<&str> {
None
}
}
erased_serde::serialize_trait_object!(ValicoError);
downcast_rs::impl_downcast!(ValicoError);
pub type ValicoErrors = Vec<Box<dyn ValicoError>>;
macro_rules! impl_basic_err {
($err:ty, $code:expr) => {
impl ::std::error::Error for $err {}
impl ::std::fmt::Display for $err {
fn fmt(&self, formatter: &mut ::std::fmt::Formatter<'_>) -> ::std::fmt::Result {
write!(formatter, $code)
}
}
};
}
macro_rules! impl_err {
($err:ty, $code:expr, $title:expr) => {
impl_basic_err!($err, $code);
impl $crate::common::error::ValicoError for $err {
fn get_code(&self) -> &str {
$code
}
fn get_title(&self) -> &str {
$title
}
fn get_path(&self) -> &str {
self.path.as_ref()
}
}
};
($err:ty, $code:expr, $title:expr, +detail) => {
impl_basic_err!($err, $code);
impl $crate::common::error::ValicoError for $err {
fn get_code(&self) -> &str {
$code
}
fn get_title(&self) -> &str {
$title
}
fn get_path(&self) -> &str {
self.path.as_ref()
}
fn get_detail(&self) -> Option<&str> {
Some(self.detail.as_ref())
}
}
};
($err:ty, $code:expr, $title:expr, +opt_detail) => {
impl_basic_err!($err, $code);
impl $crate::common::error::ValicoError for $err {
fn get_code(&self) -> &str {
$code
}
fn get_title(&self) -> &str {
$title
}
fn get_path(&self) -> &str {
self.path.as_ref()
}
fn get_detail(&self) -> Option<&str> {
self.detail.as_ref().map(|s| s.as_ref())
}
}
};
}
macro_rules! impl_serialize {
($err:ty) => {
impl Serialize for $err {
fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error> where S: Serializer {
let mut map = ::serde_json::Map::new();
map.insert("code".to_string(), to_value(self.get_code()).unwrap());
map.insert("title".to_string(), to_value(self.get_title()).unwrap());
map.insert("path".to_string(), to_value(self.get_path()).unwrap());
if let Some(ref detail) = self.get_detail() {
map.insert("detail".to_string(), to_value(detail).unwrap());
}
Value::Object(map).serialize(serializer)
}
}
};
($err:ty, $($sp:expr),+) => {
impl Serialize for $err {
fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error> where S: Serializer {
let mut map = ::serde_json::Map::new();
map.insert("code".to_string(), to_value(self.get_code()).unwrap());
map.insert("title".to_string(), to_value(self.get_title()).unwrap());
map.insert("path".to_string(), to_value(self.get_path()).unwrap());
if let Some(ref detail) = self.get_detail() {
map.insert("detail".to_string(), to_value(detail).unwrap());
}
$({
let closure = $sp;
closure(self, &mut map);
})+
Value::Object(map).serialize(serializer)
}
}
}
}