Represents string types that can be escape-printed. # Safety `source_len` and `layout` must be accurate, and `layout.len` must not be equal to `Some(source_len)` if the string contains non-printable characters.
| 45 | /// `source_len` and `layout` must be accurate, and `layout.len` must not be equal |
| 46 | /// to `Some(source_len)` if the string contains non-printable characters. |
| 47 | pub unsafe trait Escape { |
| 48 | fn source_len(&self) -> usize; |
| 49 | fn layout(&self) -> &EscapeLayout; |
| 50 | fn changed(&self) -> bool { |
| 51 | self.layout().len != Some(self.source_len()) |
| 52 | } |
| 53 | |
| 54 | /// Write the body of the string directly to the formatter. |
| 55 | /// |
| 56 | /// # Safety |
| 57 | /// |
| 58 | /// This string must only contain printable characters. |
| 59 | unsafe fn write_source(&self, formatter: &mut impl core::fmt::Write) -> core::fmt::Result; |
| 60 | fn write_body_slow(&self, formatter: &mut impl core::fmt::Write) -> core::fmt::Result; |
| 61 | fn write_body(&self, formatter: &mut impl core::fmt::Write) -> core::fmt::Result { |
| 62 | if self.changed() { |
| 63 | self.write_body_slow(formatter) |
| 64 | } else { |
| 65 | // SAFETY: verified the string contains only printable characters. |
| 66 | unsafe { self.write_source(formatter) } |
| 67 | } |
| 68 | } |
| 69 | } |
| 70 | |
| 71 | /// Returns the outer quotes to use and the number of quotes that need to be |
| 72 | /// escaped. |
no outgoing calls
no test coverage detected