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#![feature(conservative_impl_trait)]
#[macro_use]
extern crate serde_derive;
extern crate serde;
extern crate serde_json;
pub mod validators;
#[derive(Debug, Clone, Serialize)]
pub struct Invalid {
pub msg: String,
pub args: Vec<String>,
}
#[derive(Debug, Clone, Serialize)]
pub struct MultipleInvalid {
pub tag: String,
pub invalids: Vec<Invalid>,
}
impl MultipleInvalid {
pub fn invalid(tag: String, msg: String, args: Vec<String>) -> MultipleInvalid {
MultipleInvalid {
tag: tag,
invalids: vec![Invalid {
msg: msg,
args: args,
}],
}
}
}
#[derive(Debug, Clone, Serialize)]
pub struct Error(pub Vec<Invalid>);
#[derive(Debug, Clone, Serialize)]
pub struct MultipleError(pub Vec<MultipleInvalid>);
pub type ValidatorResult = std::result::Result<(), Invalid>;
pub type Result = std::result::Result<(), MultipleError>;
pub trait Accord {
fn validate(&self) -> Result;
}
#[macro_export]
macro_rules! rules {
( $a:expr, [ $( $b:expr ),* ] ) => {{
let invalids = [$($b(&$a)),*]
.iter()
.cloned()
.filter_map(move |r| r.err())
.collect::<Vec<_>>();
if invalids.len() > 0 {
Err(Error(invalids))
} else {
Ok(())
}
}};
( $( $a:expr => $b:expr => [ $( $c:expr ),* ] ),* ) => {{
let multiple_invalids = vec![$(MultipleInvalid {
tag: $a.to_string(),
invalids: [$($c(&$b)),*]
.iter()
.cloned()
.filter_map(move |r| r.err())
.collect::<Vec<_>>()
}),*]
.iter()
.cloned()
.filter(|m| m.invalids.len() > 0)
.collect::<Vec<_>>();
if multiple_invalids.len() > 0 {
Err(MultipleError(multiple_invalids))
} else {
Ok(())
}
}};
}