| 5 | mod types; |
| 6 | |
| 7 | pub trait WriteSource { |
| 8 | /// Converts self to its source representation according to specified |
| 9 | /// options. |
| 10 | /// |
| 11 | /// Returns `None` if source does not fit into [WriteOpt::rem_width]. |
| 12 | fn write(&self, opt: WriteOpt) -> Option<String>; |
| 13 | |
| 14 | fn write_between<S: ToString>( |
| 15 | &self, |
| 16 | prefix: S, |
| 17 | suffix: &str, |
| 18 | mut opt: WriteOpt, |
| 19 | ) -> Option<String> { |
| 20 | let mut r = String::new(); |
| 21 | r += opt.consume(&prefix.to_string())?; |
| 22 | opt.context_strength = 0; |
| 23 | opt.unbound_expr = false; |
| 24 | |
| 25 | let source = self.write(opt.clone())?; |
| 26 | r += opt.consume(&source)?; |
| 27 | |
| 28 | r += opt.consume(suffix)?; |
| 29 | Some(r) |
| 30 | } |
| 31 | |
| 32 | fn write_or_expand(&self, mut opt: WriteOpt) -> String { |
| 33 | loop { |
| 34 | if let Some(s) = self.write(opt.clone()) { |
| 35 | return s; |
| 36 | } else { |
| 37 | opt.max_width += opt.max_width / 2; |
| 38 | opt.reset_line(); |
| 39 | } |
| 40 | } |
| 41 | } |
| 42 | } |
| 43 | |
| 44 | impl<T: WriteSource> WriteSource for &T { |
| 45 | fn write(&self, opt: WriteOpt) -> Option<String> { |