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#[cfg(doc)]
use crate::index::DevTreeIndex;
use crate::priv_util::SliceReadError;
use core::fmt;
use core::result;
use core::str::Utf8Error;
#[derive(Debug, Clone, Copy, PartialEq, Eq)]
pub enum DevTreeError {
InvalidParameter(&'static str),
InvalidMagicNumber,
InvalidOffset,
ParseError,
StrError(Utf8Error),
NotEnoughMemory,
}
impl From<SliceReadError> for DevTreeError {
fn from(_: SliceReadError) -> DevTreeError {
DevTreeError::ParseError
}
}
impl From<Utf8Error> for DevTreeError {
fn from(e: Utf8Error) -> DevTreeError {
DevTreeError::StrError(e)
}
}
pub type Result<T> = core::result::Result<T, DevTreeError>;
impl fmt::Display for DevTreeError {
fn fmt(&self, f: &mut fmt::Formatter) -> result::Result<(), fmt::Error> {
match *self {
DevTreeError::InvalidParameter(err) => write!(f, "Invalid paramter supplied: {}", err),
DevTreeError::InvalidOffset => write!(f, "Invalid offset provided."),
DevTreeError::InvalidMagicNumber => {
write!(f, "Device tree contains invalid magic number.")
}
DevTreeError::ParseError => write!(f, "Failed to parse device tree. It is invalid."),
DevTreeError::StrError(utf_err) => {
write!(f, "Failed to parse device tree string: {}", utf_err)
}
DevTreeError::NotEnoughMemory => write!(
f,
"Unable to fit device tree index into the provided buffer."
),
}
}
}