Add some utility functions/iterators
Getty Ritter
6 years ago
| 30 | 30 | pub fn size(&self) -> usize { |
| 31 | 31 | self.fields.len() |
| 32 | 32 | } |
| 33 | ||
| 34 | pub fn get<'a>(&'a self, name: &str) -> Option<&'a str> { | |
| 35 | self.fields.iter() | |
| 36 | .find(|&&(ref p, _)| p == name) | |
| 37 | .map(|&(_, ref q)| q.as_ref()) | |
| 38 | } | |
| 33 | 39 | } |
| 34 | 40 | |
| 35 | 41 | |
| 54 | 60 | Some(ref t) => t == type_name, |
| 55 | 61 | None => false, |
| 56 | 62 | }); |
| 63 | } | |
| 64 | ||
| 65 | pub fn iter_by_type<'a>(&'a self, type_name: &'a str) -> RecIterator<'a> { | |
| 66 | RecIterator { | |
| 67 | typ: type_name, | |
| 68 | rec: self.records.iter(), | |
| 69 | } | |
| 70 | } | |
| 71 | ||
| 72 | pub fn iter<'a>(&'a self) -> std::slice::Iter<'a, Record> { | |
| 73 | self.records.iter() | |
| 74 | } | |
| 75 | } | |
| 76 | ||
| 77 | pub struct RecIterator<'a> { | |
| 78 | pub typ: &'a str, | |
| 79 | pub rec: std::slice::Iter<'a, Record>, | |
| 80 | } | |
| 81 | ||
| 82 | impl<'a> Iterator for RecIterator<'a> { | |
| 83 | type Item = &'a Record; | |
| 84 | ||
| 85 | fn next(&mut self) -> Option<&'a Record> { | |
| 86 | while let Some(r) = self.rec.next() { | |
| 87 | match r.rec_type { | |
| 88 | Some(ref n) if n == self.typ => return Some(r), | |
| 89 | _ => (), | |
| 90 | } | |
| 91 | } | |
| 92 | return None; | |
| 57 | 93 | } |
| 58 | 94 | } |
| 59 | 95 | |
| 122 | 158 | val[1..].trim_left().to_owned())); |
| 123 | 159 | if key == "%rec" { |
| 124 | 160 | ctx.current_record_type = Some(val[1..].trim_left().to_owned()); |
| 161 | current.rec_type = None; | |
| 125 | 162 | } |
| 126 | 163 | } else { |
| 127 | 164 | return Err(RecError::InvalidLine { ln: ln.to_owned() }); |