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-rw-r--r--src/error/mod.rs27
1 files changed, 25 insertions, 2 deletions
diff --git a/src/error/mod.rs b/src/error/mod.rs
index 964d83e..6eb6c15 100644
--- a/src/error/mod.rs
+++ b/src/error/mod.rs
@@ -23,6 +23,7 @@
use std::error::Error as StdError;
use std::fmt::{Display, Formatter};
+use std::str::Utf8Error;
/// Mapping of [`std::result::Result`].
pub type Result<T> = std::result::Result<T, Error>;
@@ -37,10 +38,14 @@ pub enum Error {
EndOfDStream { len: usize, ok_len: usize },
+ FixedStringTooShort { len: usize, s: String },
+
InvalidBoolean { value: u8 },
InvalidCodePoint { value: u32 },
+ InvalidUtf8 { source: Utf8Error },
+
NullInteger,
}
@@ -57,13 +62,21 @@ impl Display for Error {
write!(f, "({ok_len}) byte(s) were requested but only ({len}) byte(s) were left")
},
+ FixedStringTooShort { len, ref s } => {
+ write!(f, "fixed string with `N = {len}` cannot hold {s:?}")
+ },
+
InvalidBoolean { value } => {
write!(f, "expected boolean but got {value:#02X}")
},
InvalidCodePoint { value } => {
write!(f, "code point U+{value:04X} is not valid")
- }
+ },
+
+ InvalidUtf8 { ref source } =>{
+ write!(f, "unable to parse utf8: \"{source}\"")
+ },
NullInteger => {
write!(f, "expected non-zero integer but got (0)")
@@ -72,4 +85,14 @@ impl Display for Error {
}
}
-impl StdError for Error { }
+impl StdError for Error {
+ fn source(&self) -> Option<&(dyn StdError + 'static)> {
+ use Error::*;
+
+ match *self {
+ InvalidUtf8 { ref source } => Some(source),
+
+ _ => None,
+ }
+ }
+}