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use crate::parser;
use std::error;
use std::fmt;
use std::result::Result;
#[allow(missing_docs)]
#[rustversion::attr(since(1.40), non_exhaustive)]
#[derive(Debug, PartialEq)]
pub enum ValidateError {
ParseError(parser::ParseError),
Structural(String),
Mismatch(Mismatch),
MapCut(Mismatch),
MissingRule(String),
Unsupported(String),
ValueError(String),
}
impl ValidateError {
pub(crate) fn is_fatal(&self) -> bool {
match self {
ValidateError::Mismatch(_) => false,
ValidateError::MapCut(_) => false,
_ => true,
}
}
pub(crate) fn erase_mapcut(self) -> ValidateError {
match self {
ValidateError::MapCut(m) => ValidateError::Mismatch(m),
_ => self,
}
}
pub(crate) fn is_mismatch(&self) -> bool {
match self {
ValidateError::Mismatch(_) => true,
_ => false,
}
}
}
#[derive(Debug, PartialEq)]
pub struct Mismatch {
expected: String,
}
#[doc(hidden)]
pub fn mismatch<E: Into<String>>(expected: E) -> ValidateError {
ValidateError::Mismatch(Mismatch {
expected: expected.into(),
})
}
impl fmt::Display for ValidateError {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
use ValidateError::*;
match self {
ParseError(p) => p.fmt(f),
Structural(msg) => write!(f, "Structural({})", msg),
Mismatch(mismatch) => write!(f, "Mismatch(expected {})", mismatch.expected),
MapCut(mismatch) => write!(f, "Mismatch(expected {})", mismatch.expected),
MissingRule(rule) => write!(f, "MissingRule({})", rule),
Unsupported(msg) => write!(f, "Unsupported {}", msg),
ValueError(msg) => write!(f, "ValueError({})", msg),
}
}
}
impl error::Error for ValidateError {
fn source(&self) -> Option<&(dyn error::Error + 'static)> {
None
}
}
pub type ValidateResult = Result<(), ValidateError>;