custom error for end of input parsing integer

src/parsers/error.rs

@@ -14,11 +14,14 @@ pub enum Error {
     #[error("R/W error: {0}")]
     Rw(#[from] rw::error::Error),
 
+    #[error("Unrecognized first byte for new bencoded value: {0}, char: {1}")]
+    UnrecognizedFirstBencodeValueByte(u8, char),
+
     #[error("Unexpected byte parsing integer: {0}, char: {1}")]
     UnexpectedByteParsingInteger(u8, char),
 
-    #[error("Unrecognized first byte for new bencoded value: {0}, char: {1}")]
-    UnrecognizedFirstBencodeValueByte(u8, char),
+    #[error("Unexpected end of input parsing integer")]
+    UnexpectedEndOfInputParsingInteger,
 
     #[error("Unexpected end of list or dict. No matching start for the list or dict end")]
     NoMatchingStartForListOrDictEnd,

src/parsers/integer.rs

@@ -1,7 +1,7 @@
 //! Bencoded integer parser.
 //!
 //! It reads bencoded bytes from the input and writes JSON bytes to the output.
-use std::io::Read;
+use std::io::{self, Read};
 
 use crate::rw::{byte_reader::ByteReader, writer::Writer};
 
@@ -39,7 +39,15 @@ pub fn parse<R: Read, W: Writer>(
     loop {
         let byte = match reader.read_byte() {
             Ok(byte) => byte,
-            Err(err) => return Err(err.into()),
+            Err(err) => match err {
+                crate::rw::error::Error::Io(ref io_error) => {
+                    if io_error.kind() == io::ErrorKind::UnexpectedEof {
+                        return Err(Error::UnexpectedEndOfInputParsingInteger);
+                    }
+                    return Err(err.into());
+                }
+                crate::rw::error::Error::Fmt(_fmt_error) => return Err(err.into()),
+            },
         };
 
         let char = byte as char;