readcon_core/
error.rs

1use std::fmt;
2use std::num::{ParseFloatError, ParseIntError};
3
4#[derive(Debug)]
5pub enum ParseError {
6    IncompleteHeader,
7    IncompleteFrame,
8    IncompleteVelocitySection,
9    InvalidVectorLength { expected: usize, found: usize },
10    InvalidNumberFormat(String),
11    MissingSpecVersion,
12    UnsupportedSpecVersion(u32),
13    InvalidMetadataJson(String),
14    IncompleteForceSection,
15    UnknownSection(String),
16    ValidationError(String),
17}
18
19impl fmt::Display for ParseError {
20    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
21        match self {
22            ParseError::IncompleteHeader => {
23                write!(f, "file ended unexpectedly while parsing frame header")
24            }
25            ParseError::IncompleteFrame => {
26                write!(f, "file ended unexpectedly while reading atom data")
27            }
28            ParseError::IncompleteVelocitySection => {
29                write!(f, "file ended unexpectedly while reading velocity section")
30            }
31            ParseError::InvalidVectorLength { expected, found } => {
32                write!(f, "expected {expected} values on line, found {found}")
33            }
34            ParseError::InvalidNumberFormat(msg) => {
35                write!(f, "invalid number format: {msg}")
36            }
37            ParseError::MissingSpecVersion => {
38                write!(
39                    f,
40                    "line 1 must be a JSON object containing \"con_spec_version\""
41                )
42            }
43            ParseError::UnsupportedSpecVersion(v) => {
44                write!(f, "unsupported con_spec_version: {v}")
45            }
46            ParseError::InvalidMetadataJson(msg) => {
47                write!(f, "invalid JSON metadata on line 1: {msg}")
48            }
49            ParseError::IncompleteForceSection => {
50                write!(f, "file ended unexpectedly while reading force section")
51            }
52            ParseError::UnknownSection(name) => {
53                write!(f, "unknown section type in metadata: {name}")
54            }
55            ParseError::ValidationError(msg) => {
56                write!(f, "CON validation failed: {msg}")
57            }
58        }
59    }
60}
61
62impl std::error::Error for ParseError {}
63
64impl From<ParseFloatError> for ParseError {
65    fn from(e: ParseFloatError) -> Self {
66        ParseError::InvalidNumberFormat(e.to_string())
67    }
68}
69
70impl From<ParseIntError> for ParseError {
71    fn from(e: ParseIntError) -> Self {
72        ParseError::InvalidNumberFormat(e.to_string())
73    }
74}
75
76impl From<serde_json::Error> for ParseError {
77    fn from(e: serde_json::Error) -> Self {
78        ParseError::InvalidMetadataJson(e.to_string())
79    }
80}
readcon_core/error.rs

readcon_core/
error.rs
