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| 1 | +use range_set_blaze::RangeSetBlaze; |
| 2 | +use serde::{Deserialize, Deserializer, Serialize, Serializer}; |
| 3 | +use std::fmt::{Debug, Display, Formatter}; |
| 4 | +use std::str::FromStr; |
| 5 | +use thiserror::Error; |
| 6 | + |
| 7 | +#[derive(Clone, PartialEq)] |
| 8 | +pub struct CoreRange(pub(crate) RangeSetBlaze<usize>); |
| 9 | + |
| 10 | +impl Debug for CoreRange { |
| 11 | + fn fmt(&self, f: &mut Formatter<'_>) -> std::fmt::Result { |
| 12 | + f.write_str(self.0.to_string().as_str()) |
| 13 | + } |
| 14 | +} |
| 15 | + |
| 16 | +impl Default for CoreRange { |
| 17 | + fn default() -> Self { |
| 18 | + CoreRange(RangeSetBlaze::from_iter(0..num_cpus::get_physical())) |
| 19 | + } |
| 20 | +} |
| 21 | + |
| 22 | +impl TryFrom<&[usize]> for CoreRange { |
| 23 | + type Error = ParseError; |
| 24 | + |
| 25 | + fn try_from(value: &[usize]) -> Result<Self, Self::Error> { |
| 26 | + if value.is_empty() { |
| 27 | + return Err(ParseError::EmptyRange); |
| 28 | + } |
| 29 | + Ok(CoreRange(RangeSetBlaze::from_iter(value))) |
| 30 | + } |
| 31 | +} |
| 32 | + |
| 33 | +impl FromStr for CoreRange { |
| 34 | + type Err = ParseError; |
| 35 | + |
| 36 | + /// Parse CoreRange from string like "1,2-30,31" |
| 37 | + fn from_str(s: &str) -> Result<Self, Self::Err> { |
| 38 | + let mut result: RangeSetBlaze<usize> = RangeSetBlaze::new(); |
| 39 | + let trimmed = s.trim(); |
| 40 | + if trimmed.is_empty() { |
| 41 | + return Err(ParseError::EmptyRange); |
| 42 | + } |
| 43 | + |
| 44 | + for part in trimmed.split(',') { |
| 45 | + let trimmed = part.trim(); |
| 46 | + // either a single number or a dash range |
| 47 | + let range: Vec<&str> = trimmed.split('-').collect(); |
| 48 | + match range[..] { |
| 49 | + [l, r] => { |
| 50 | + let l = l |
| 51 | + .parse::<usize>() |
| 52 | + .map_err(|_| ParseError::WrongRangeFormat { |
| 53 | + raw_str: trimmed.to_string(), |
| 54 | + })?; |
| 55 | + let r = r |
| 56 | + .parse::<usize>() |
| 57 | + .map_err(|_| ParseError::WrongRangeFormat { |
| 58 | + raw_str: trimmed.to_string(), |
| 59 | + })?; |
| 60 | + // insert the inclusive range |
| 61 | + result.ranges_insert(l..=r); |
| 62 | + } |
| 63 | + [value] => { |
| 64 | + let value = |
| 65 | + value |
| 66 | + .parse::<usize>() |
| 67 | + .map_err(|_| ParseError::WrongRangeFormat { |
| 68 | + raw_str: trimmed.to_string(), |
| 69 | + })?; |
| 70 | + result.insert(value); |
| 71 | + } |
| 72 | + _ => { |
| 73 | + return Err(ParseError::WrongRangeFormat { |
| 74 | + raw_str: trimmed.to_string(), |
| 75 | + }); |
| 76 | + } |
| 77 | + } |
| 78 | + } |
| 79 | + |
| 80 | + Ok(CoreRange(result)) |
| 81 | + } |
| 82 | +} |
| 83 | + |
| 84 | +impl Display for CoreRange { |
| 85 | + fn fmt(&self, f: &mut Formatter<'_>) -> std::fmt::Result { |
| 86 | + for (index, range) in self.0.ranges().enumerate() { |
| 87 | + if index != 0 { |
| 88 | + write!(f, ",")?; |
| 89 | + }; |
| 90 | + let start = range.start(); |
| 91 | + let end = range.end(); |
| 92 | + if start == end { |
| 93 | + write!(f, "{}", start)?; |
| 94 | + } else { |
| 95 | + write!(f, "{}-{}", start, end)?; |
| 96 | + } |
| 97 | + } |
| 98 | + Ok(()) |
| 99 | + } |
| 100 | +} |
| 101 | + |
| 102 | +impl Serialize for CoreRange { |
| 103 | + fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error> |
| 104 | + where |
| 105 | + S: Serializer, |
| 106 | + { |
| 107 | + serializer.serialize_str(self.to_string().as_str()) |
| 108 | + } |
| 109 | +} |
| 110 | + |
| 111 | +impl<'de> Deserialize<'de> for CoreRange { |
| 112 | + fn deserialize<D>(deserializer: D) -> Result<Self, D::Error> |
| 113 | + where |
| 114 | + D: Deserializer<'de>, |
| 115 | + { |
| 116 | + let raw_str = String::deserialize(deserializer)?; |
| 117 | + CoreRange::from_str(raw_str.as_str()).map_err(|e| { |
| 118 | + serde::de::Error::custom(format!("failed to deserialize core range {raw_str} {e:?}")) |
| 119 | + }) |
| 120 | + } |
| 121 | +} |
| 122 | + |
| 123 | +#[derive(Debug, Error, PartialEq)] |
| 124 | +pub enum ParseError { |
| 125 | + #[error("Range can't be an empty")] |
| 126 | + EmptyRange, |
| 127 | + #[error("Failed to parse: {raw_str}")] |
| 128 | + WrongRangeFormat { raw_str: String }, |
| 129 | +} |
| 130 | + |
| 131 | +#[cfg(test)] |
| 132 | +mod tests { |
| 133 | + use crate::core_range::{CoreRange, ParseError}; |
| 134 | + |
| 135 | + #[test] |
| 136 | + fn range_parsing_test() { |
| 137 | + let core_range: CoreRange = "0-2".parse().unwrap(); |
| 138 | + assert!(core_range.0.contains(0)); |
| 139 | + assert!(core_range.0.contains(1)); |
| 140 | + assert!(core_range.0.contains(2)); |
| 141 | + assert!(!core_range.0.contains(3)); |
| 142 | + } |
| 143 | + |
| 144 | + #[test] |
| 145 | + fn values_parsing_test() { |
| 146 | + let core_range: CoreRange = "0,1,3".parse().unwrap(); |
| 147 | + assert!(core_range.0.contains(0)); |
| 148 | + assert!(core_range.0.contains(1)); |
| 149 | + assert!(!core_range.0.contains(2)); |
| 150 | + assert!(core_range.0.contains(3)); |
| 151 | + } |
| 152 | + |
| 153 | + #[test] |
| 154 | + fn wrong_parsing_test() { |
| 155 | + let result = "aaaa".parse::<CoreRange>(); |
| 156 | + assert!(result.is_err()); |
| 157 | + if let Err(err) = result { |
| 158 | + assert_eq!( |
| 159 | + err, |
| 160 | + ParseError::WrongRangeFormat { |
| 161 | + raw_str: "aaaa".to_string() |
| 162 | + } |
| 163 | + ); |
| 164 | + assert_eq!(err.to_string(), "Failed to parse: aaaa") |
| 165 | + } |
| 166 | + } |
| 167 | + |
| 168 | + #[test] |
| 169 | + fn wrong_parsing_test_2() { |
| 170 | + let result = "1-a".parse::<CoreRange>(); |
| 171 | + assert!(result.is_err()); |
| 172 | + if let Err(err) = result { |
| 173 | + assert_eq!( |
| 174 | + err, |
| 175 | + ParseError::WrongRangeFormat { |
| 176 | + raw_str: "1-a".to_string() |
| 177 | + } |
| 178 | + ); |
| 179 | + assert_eq!(err.to_string(), "Failed to parse: 1-a") |
| 180 | + } |
| 181 | + } |
| 182 | + |
| 183 | + #[test] |
| 184 | + fn wrong_parsing_test_3() { |
| 185 | + let result = "a-1".parse::<CoreRange>(); |
| 186 | + assert!(result.is_err()); |
| 187 | + if let Err(err) = result { |
| 188 | + assert_eq!( |
| 189 | + err, |
| 190 | + ParseError::WrongRangeFormat { |
| 191 | + raw_str: "a-1".to_string() |
| 192 | + } |
| 193 | + ); |
| 194 | + assert_eq!(err.to_string(), "Failed to parse: a-1") |
| 195 | + } |
| 196 | + } |
| 197 | + |
| 198 | + #[test] |
| 199 | + fn wrong_parsing_test_4() { |
| 200 | + let result = "a-1-2,3".parse::<CoreRange>(); |
| 201 | + assert!(result.is_err()); |
| 202 | + if let Err(err) = result { |
| 203 | + assert_eq!( |
| 204 | + err, |
| 205 | + ParseError::WrongRangeFormat { |
| 206 | + raw_str: "a-1-2".to_string() |
| 207 | + } |
| 208 | + ); |
| 209 | + assert_eq!(err.to_string(), "Failed to parse: a-1-2") |
| 210 | + } |
| 211 | + } |
| 212 | + |
| 213 | + #[test] |
| 214 | + fn empty_parsing_test_3() { |
| 215 | + let result = "".parse::<CoreRange>(); |
| 216 | + assert!(result.is_err()); |
| 217 | + if let Err(err) = result { |
| 218 | + assert_eq!(err, ParseError::EmptyRange); |
| 219 | + } |
| 220 | + } |
| 221 | + |
| 222 | + #[test] |
| 223 | + fn slice_convert() { |
| 224 | + let core_range = CoreRange::try_from(&vec![1, 2, 3, 10][..]).unwrap(); |
| 225 | + |
| 226 | + assert!(!core_range.0.contains(0)); |
| 227 | + assert!(core_range.0.contains(1)); |
| 228 | + assert!(core_range.0.contains(2)); |
| 229 | + assert!(core_range.0.contains(3)); |
| 230 | + assert!(core_range.0.contains(10)); |
| 231 | + assert!(!core_range.0.contains(11)); |
| 232 | + } |
| 233 | + |
| 234 | + #[test] |
| 235 | + fn empty_slice_convert() { |
| 236 | + let result = CoreRange::try_from(&vec![][..]); |
| 237 | + |
| 238 | + assert!(result.is_err()); |
| 239 | + if let Err(err) = result { |
| 240 | + assert_eq!(err, ParseError::EmptyRange); |
| 241 | + assert_eq!(err.to_string(), "Range can't be an empty") |
| 242 | + } |
| 243 | + } |
| 244 | + |
| 245 | + #[test] |
| 246 | + fn last() { |
| 247 | + let core_range: CoreRange = "0-2".parse().unwrap(); |
| 248 | + assert!(core_range.0.contains(0)); |
| 249 | + assert!(core_range.0.contains(1)); |
| 250 | + assert!(core_range.0.contains(2)); |
| 251 | + assert!(!core_range.0.contains(3)); |
| 252 | + } |
| 253 | + |
| 254 | + #[test] |
| 255 | + fn compare_ranges() { |
| 256 | + let core_range_1: CoreRange = "0-2".parse().unwrap(); |
| 257 | + let core_range_2: CoreRange = "0,1,2".parse().unwrap(); |
| 258 | + assert_eq!(core_range_1, core_range_2); |
| 259 | + } |
| 260 | + |
| 261 | + #[test] |
| 262 | + fn fmt() { |
| 263 | + let core_range_1: CoreRange = "0-2,5,7-9".parse().unwrap(); |
| 264 | + assert_eq!(format!("{}", core_range_1), "0-2,5,7-9"); |
| 265 | + } |
| 266 | +} |
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