1 | use std::fmt;
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2 | use std::num::ParseFloatError;
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3 | use std::num::ParseIntError;
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4 | use std::str::ParseBoolError;
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5 |
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6 | #[derive (Debug)]
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7 | pub enum Error {
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8 | Xml(roxmltree::Error),
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9 | NoFontconfig,
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10 | InvalidFormat(String),
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11 | IoError(std::io::Error),
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12 | ParseEnumError(&'static str, String),
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13 | ParseIntError(ParseIntError),
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14 | ParseFloatError(ParseFloatError),
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15 | ParseBoolError(ParseBoolError),
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16 | }
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17 |
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18 | impl From<std::io::Error> for Error {
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19 | fn from(e: std::io::Error) -> Self {
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20 | Self::IoError(e)
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21 | }
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22 | }
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23 |
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24 | impl From<roxmltree::Error> for Error {
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25 | fn from(e: roxmltree::Error) -> Self {
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26 | Self::Xml(e)
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27 | }
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28 | }
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29 |
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30 | impl From<ParseIntError> for Error {
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31 | fn from(e: ParseIntError) -> Self {
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32 | Self::ParseIntError(e)
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33 | }
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34 | }
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35 |
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36 | impl From<ParseFloatError> for Error {
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37 | fn from(e: ParseFloatError) -> Self {
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38 | Self::ParseFloatError(e)
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39 | }
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40 | }
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41 |
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42 | impl From<ParseBoolError> for Error {
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43 | fn from(e: ParseBoolError) -> Self {
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44 | Self::ParseBoolError(e)
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45 | }
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46 | }
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47 |
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48 | impl fmt::Display for Error {
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49 | fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
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50 | match self {
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51 | Error::Xml(e: &Error) => e.fmt(f),
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52 | Error::NoFontconfig => write!(f, "Can't find fontconfig element" ),
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53 | Error::InvalidFormat(msg: &String) => write!(f, "Config format is invalid: {}" , msg),
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54 | Error::IoError(e: &Error) => write!(f, "IO error: {}" , e),
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55 | Error::ParseEnumError(ty: &&str, s: &String) => write!(f, "Unknown variant for {}: {}" , ty, s),
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56 | Error::ParseIntError(e: &ParseIntError) => e.fmt(f),
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57 | Error::ParseFloatError(e: &ParseFloatError) => e.fmt(f),
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58 | Error::ParseBoolError(e: &ParseBoolError) => e.fmt(f),
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59 | }
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60 | }
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61 | }
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62 |
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63 | impl std::error::Error for Error {}
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64 | |