tz/error/
mod.rs

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
//! Error types.

use core::array::TryFromSliceError;
use core::fmt;
use core::num::TryFromIntError;
use core::str::Utf8Error;

#[cfg(feature = "std")]
mod parse {
    use super::*;

    use core::num::ParseIntError;

    /// Unified error type for parsing a TZ string
    #[cfg_attr(docsrs, doc(cfg(feature = "std")))]
    #[non_exhaustive]
    #[derive(Debug)]
    pub enum TzStringError {
        /// UTF-8 error
        Utf8Error(Utf8Error),
        /// Integer parsing error
        ParseIntError(ParseIntError),
        /// I/O error
        IoError(std::io::Error),
        /// Invalid TZ string
        InvalidTzString(&'static str),
        /// Unsupported TZ string
        UnsupportedTzString(&'static str),
    }

    impl fmt::Display for TzStringError {
        fn fmt(&self, f: &mut fmt::Formatter) -> Result<(), fmt::Error> {
            match self {
                Self::Utf8Error(error) => error.fmt(f),
                Self::ParseIntError(error) => error.fmt(f),
                Self::IoError(error) => error.fmt(f),
                Self::InvalidTzString(error) => write!(f, "invalid TZ string: {}", error),
                Self::UnsupportedTzString(error) => write!(f, "unsupported TZ string: {}", error),
            }
        }
    }

    impl std::error::Error for TzStringError {}

    impl From<Utf8Error> for TzStringError {
        fn from(error: Utf8Error) -> Self {
            Self::Utf8Error(error)
        }
    }

    impl From<ParseIntError> for TzStringError {
        fn from(error: ParseIntError) -> Self {
            Self::ParseIntError(error)
        }
    }

    impl From<std::io::Error> for TzStringError {
        fn from(error: std::io::Error) -> Self {
            Self::IoError(error)
        }
    }

    /// Unified error type for parsing a TZif file
    #[cfg_attr(docsrs, doc(cfg(feature = "std")))]
    #[non_exhaustive]
    #[derive(Debug)]
    pub enum TzFileError {
        /// Conversion from slice to array error
        TryFromSliceError(TryFromSliceError),
        /// I/O error
        IoError(std::io::Error),
        /// Unified error for parsing a TZ string
        TzStringError(TzStringError),
        /// Invalid TZif file
        InvalidTzFile(&'static str),
        /// Unsupported TZif file
        UnsupportedTzFile(&'static str),
    }

    impl fmt::Display for TzFileError {
        fn fmt(&self, f: &mut fmt::Formatter) -> Result<(), fmt::Error> {
            match self {
                Self::TryFromSliceError(error) => error.fmt(f),
                Self::IoError(error) => error.fmt(f),
                Self::TzStringError(error) => error.fmt(f),
                Self::InvalidTzFile(error) => write!(f, "invalid TZ file: {}", error),
                Self::UnsupportedTzFile(error) => write!(f, "unsupported TZ file: {}", error),
            }
        }
    }

    impl std::error::Error for TzFileError {}

    impl From<TryFromSliceError> for TzFileError {
        fn from(error: TryFromSliceError) -> Self {
            Self::TryFromSliceError(error)
        }
    }

    impl From<std::io::Error> for TzFileError {
        fn from(error: std::io::Error) -> Self {
            Self::IoError(error)
        }
    }

    impl From<TzStringError> for TzFileError {
        fn from(error: TzStringError) -> Self {
            Self::TzStringError(error)
        }
    }
}

#[cfg(feature = "std")]
pub use parse::{TzFileError, TzStringError};

macro_rules! create_error {
    (#[$doc:meta], $name:ident) => {
        #[$doc]
        #[derive(Debug)]
        pub struct $name(
            /// Error description
            pub &'static str,
        );

        impl fmt::Display for $name {
            fn fmt(&self, f: &mut fmt::Formatter) -> Result<(), fmt::Error> {
                self.0.fmt(f)
            }
        }

        #[cfg(feature = "std")]
        #[cfg_attr(docsrs, doc(cfg(feature = "std")))]
        impl std::error::Error for $name {}
    };
}

create_error!(#[doc = "Out of range error"], OutOfRangeError);
create_error!(#[doc = "Local time type error"], LocalTimeTypeError);
create_error!(#[doc = "Transition rule error"], TransitionRuleError);
create_error!(#[doc = "Time zone error"], TimeZoneError);
create_error!(#[doc = "Date time error"], DateTimeError);
create_error!(#[doc = "Local time type search error"], FindLocalTimeTypeError);
create_error!(#[doc = "Date time projection error"], ProjectDateTimeError);

impl From<OutOfRangeError> for ProjectDateTimeError {
    fn from(error: OutOfRangeError) -> Self {
        Self(error.0)
    }
}

impl From<FindLocalTimeTypeError> for ProjectDateTimeError {
    fn from(error: FindLocalTimeTypeError) -> Self {
        Self(error.0)
    }
}

/// Unified error type for everything in the crate
#[non_exhaustive]
#[derive(Debug)]
pub enum TzError {
    /// UTF-8 error
    Utf8Error(Utf8Error),
    /// Conversion from slice to array error
    TryFromSliceError(TryFromSliceError),
    /// I/O error
    #[cfg(feature = "std")]
    #[cfg_attr(docsrs, doc(cfg(feature = "std")))]
    IoError(std::io::Error),
    /// System time error
    #[cfg(feature = "std")]
    #[cfg_attr(docsrs, doc(cfg(feature = "std")))]
    SystemTimeError(std::time::SystemTimeError),
    /// Unified error for parsing a TZif file
    #[cfg(feature = "std")]
    #[cfg_attr(docsrs, doc(cfg(feature = "std")))]
    TzFileError(TzFileError),
    /// Unified error for parsing a TZ string
    #[cfg(feature = "std")]
    #[cfg_attr(docsrs, doc(cfg(feature = "std")))]
    TzStringError(TzStringError),
    /// Out of range error
    OutOfRangeError(OutOfRangeError),
    /// Local time type error
    LocalTimeTypeError(LocalTimeTypeError),
    /// Transition rule error
    TransitionRuleError(TransitionRuleError),
    /// Time zone error
    TimeZoneError(TimeZoneError),
    /// Date time error
    DateTimeError(DateTimeError),
    /// Local time type search error
    FindLocalTimeTypeError(FindLocalTimeTypeError),
    /// Date time projection error
    ProjectDateTimeError(ProjectDateTimeError),
}

impl fmt::Display for TzError {
    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
        match self {
            Self::Utf8Error(error) => error.fmt(f),
            Self::TryFromSliceError(error) => error.fmt(f),
            #[cfg(feature = "std")]
            Self::IoError(error) => error.fmt(f),
            #[cfg(feature = "std")]
            Self::SystemTimeError(error) => error.fmt(f),
            #[cfg(feature = "std")]
            Self::TzFileError(error) => error.fmt(f),
            #[cfg(feature = "std")]
            Self::TzStringError(error) => error.fmt(f),
            Self::OutOfRangeError(error) => error.fmt(f),
            Self::LocalTimeTypeError(error) => write!(f, "invalid local time type: {}", error),
            Self::TransitionRuleError(error) => write!(f, "invalid transition rule: {}", error),
            Self::TimeZoneError(error) => write!(f, "invalid time zone: {}", error),
            Self::DateTimeError(error) => write!(f, "invalid date time: {}", error),
            Self::FindLocalTimeTypeError(error) => error.fmt(f),
            Self::ProjectDateTimeError(error) => error.fmt(f),
        }
    }
}

#[cfg(feature = "std")]
#[cfg_attr(docsrs, doc(cfg(feature = "std")))]
impl std::error::Error for TzError {}

impl From<Utf8Error> for TzError {
    fn from(error: Utf8Error) -> Self {
        Self::Utf8Error(error)
    }
}

impl From<TryFromSliceError> for TzError {
    fn from(error: TryFromSliceError) -> Self {
        Self::TryFromSliceError(error)
    }
}

#[cfg(feature = "std")]
#[cfg_attr(docsrs, doc(cfg(feature = "std")))]
impl From<std::io::Error> for TzError {
    fn from(error: std::io::Error) -> Self {
        Self::IoError(error)
    }
}

#[cfg(feature = "std")]
#[cfg_attr(docsrs, doc(cfg(feature = "std")))]
impl From<std::time::SystemTimeError> for TzError {
    fn from(error: std::time::SystemTimeError) -> Self {
        Self::SystemTimeError(error)
    }
}

#[cfg(feature = "std")]
#[cfg_attr(docsrs, doc(cfg(feature = "std")))]
impl From<TzFileError> for TzError {
    fn from(error: TzFileError) -> Self {
        Self::TzFileError(error)
    }
}

#[cfg(feature = "std")]
#[cfg_attr(docsrs, doc(cfg(feature = "std")))]
impl From<TzStringError> for TzError {
    fn from(error: TzStringError) -> Self {
        Self::TzStringError(error)
    }
}

impl From<OutOfRangeError> for TzError {
    fn from(error: OutOfRangeError) -> Self {
        Self::OutOfRangeError(error)
    }
}

impl From<TryFromIntError> for TzError {
    fn from(_: TryFromIntError) -> Self {
        Self::OutOfRangeError(OutOfRangeError("out of range integer conversion"))
    }
}

impl From<LocalTimeTypeError> for TzError {
    fn from(error: LocalTimeTypeError) -> Self {
        Self::LocalTimeTypeError(error)
    }
}

impl From<TransitionRuleError> for TzError {
    fn from(error: TransitionRuleError) -> Self {
        Self::TransitionRuleError(error)
    }
}

impl From<TimeZoneError> for TzError {
    fn from(error: TimeZoneError) -> Self {
        Self::TimeZoneError(error)
    }
}

impl From<DateTimeError> for TzError {
    fn from(error: DateTimeError) -> Self {
        Self::DateTimeError(error)
    }
}

impl From<FindLocalTimeTypeError> for TzError {
    fn from(error: FindLocalTimeTypeError) -> Self {
        Self::FindLocalTimeTypeError(error)
    }
}

impl From<ProjectDateTimeError> for TzError {
    fn from(error: ProjectDateTimeError) -> Self {
        Self::ProjectDateTimeError(error)
    }
}