va_ts/
error.rs

1use std::error::Error as StdError;
2use std::fmt;
3use std::io::Error as IoError;
4
5#[derive(Debug)]
6pub enum Kind {
7    SyncByte(u8),
8    Buf(usize, usize),
9    PESStartCode(u32),
10    SectionSyntaxIndicatorNotSet,
11    AnnexA2EmptyBuf,
12    AnnexA2UnsupportedEncoding,
13    AnnexA2Decode,
14    AnnexA2TableA3Unexpected(u8),
15    AnnexA2TableA4Buf(usize, usize),
16    AnnexA2TableA4Unexpected(u8),
17    AnnexCBuf(usize, usize),
18
19    Io(IoError),
20}
21
22pub struct Error(Kind);
23
24impl Error {
25    pub fn new(kind: Kind) -> Error {
26        Error(kind)
27    }
28}
29
30impl fmt::Display for Error {
31    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
32        write!(f, "{:?}", self)
33    }
34}
35
36impl fmt::Debug for Error {
37    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
38        write!(
39            f,
40            r#"(:error ({:?}) (:txt "{}""#,
41            self.0,
42            self.description()
43        )?;
44
45        match self.0 {
46            Kind::SyncByte(b) => write!(f, " (:got 0x{:02X})", b)?,
47            Kind::Buf(actual, expected) => {
48                write!(f, " (:sz-actual {} :sz-expected {})", actual, expected)?
49            }
50            Kind::PESStartCode(actual) => write!(f, " (:actual 0x{:08X})", actual)?,
51
52            Kind::AnnexA2TableA3Unexpected(b) => write!(f, " (:got 0x{:02X})", b)?,
53            Kind::AnnexA2TableA4Buf(actual, expected) => {
54                write!(f, " (:sz-actual {} :sz-expected {})", actual, expected)?
55            }
56            Kind::AnnexA2TableA4Unexpected(b) => write!(f, " (:got 0x{:02X})", b)?,
57
58            Kind::AnnexCBuf(actual, expected) => {
59                write!(f, " (:sz-actual {} :sz-expected {})", actual, expected)?
60            }
61
62            _ => {}
63        }
64
65        write!(f, "))")
66    }
67}
68
69impl StdError for Error {
70    fn description(&self) -> &str {
71        match self.0 {
72            Kind::SyncByte(..) => "expected sync byte as first element",
73            Kind::Buf(..) => "buffer is too small, more data required",
74            Kind::PESStartCode(..) => "(pes) unexpected start code",
75            Kind::SectionSyntaxIndicatorNotSet => "(psi) section-syntax-indicator must be set",
76
77            Kind::AnnexA2UnsupportedEncoding => "(annex-a2) unsupported encoding",
78            Kind::AnnexA2Decode => "(annex-a2) decode error",
79            Kind::AnnexA2EmptyBuf => "(annex-a2 parse) got empty character buffer",
80            Kind::AnnexA2TableA3Unexpected(..) => "(annex-a2 table-a3 parse) unexpected value",
81            Kind::AnnexA2TableA4Buf(..) => {
82                "(annex-a2 table-a4 parse) buffer is too small, more data required"
83            }
84            Kind::AnnexA2TableA4Unexpected(..) => "(annex-a2 table-a4 parse) unexpected value",
85
86            Kind::AnnexCBuf(..) => "(annex-c parse) buffer is too small, more data required",
87
88            Kind::Io(ref err) => err.description(),
89        }
90    }
91
92    fn cause(&self) -> Option<&dyn StdError> {
93        match self.0 {
94            Kind::Io(ref err) => Some(err),
95            _ => None,
96        }
97    }
98}
99
100impl PartialEq for Error {
101    fn eq(&self, other: &Error) -> bool {
102        match (&self.0, &other.0) {
103            (Kind::SyncByte(a1), Kind::SyncByte(a2)) => a1 == a2,
104            (Kind::Buf(a1, b1), Kind::Buf(a2, b2)) => a1 == a2 && b1 == b2,
105            (Kind::PESStartCode(a1), Kind::PESStartCode(a2)) => a1 == a2,
106            (Kind::SectionSyntaxIndicatorNotSet, Kind::SectionSyntaxIndicatorNotSet) => true,
107            (Kind::AnnexA2EmptyBuf, Kind::AnnexA2EmptyBuf) => true,
108            (Kind::AnnexA2UnsupportedEncoding, Kind::AnnexA2UnsupportedEncoding) => true,
109            (Kind::AnnexA2Decode, Kind::AnnexA2Decode) => true,
110            (Kind::AnnexA2TableA3Unexpected(a1), Kind::AnnexA2TableA3Unexpected(a2)) => a1 == a2,
111            (Kind::AnnexA2TableA4Buf(a1, b1), Kind::AnnexA2TableA4Buf(a2, b2)) => {
112                a1 == a2 && b1 == b2
113            }
114            (Kind::AnnexA2TableA4Unexpected(a1), Kind::AnnexA2TableA4Unexpected(a2)) => a1 == a2,
115            (Kind::AnnexCBuf(a1, a2), Kind::AnnexCBuf(b1, b2)) => a1 == a2 && b1 == b2,
116            (Kind::Io(..), Kind::Io(..)) => true,
117            _ => false,
118        }
119    }
120}
121impl Eq for Error {}
122
123impl From<IoError> for Error {
124    fn from(err: IoError) -> Error {
125        Error::new(Kind::Io(err))
126    }
127}
va_ts/error.rs

va_ts/
error.rs
