diff options
Diffstat (limited to '')
-rw-r--r-- | vendor/serde/src/de/format.rs | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/vendor/serde/src/de/format.rs b/vendor/serde/src/de/format.rs new file mode 100644 index 000000000..58ec0968d --- /dev/null +++ b/vendor/serde/src/de/format.rs @@ -0,0 +1,30 @@ +use lib::fmt::{self, Write}; +use lib::str; + +pub struct Buf<'a> { + bytes: &'a mut [u8], + offset: usize, +} + +impl<'a> Buf<'a> { + pub fn new(bytes: &'a mut [u8]) -> Self { + Buf { bytes, offset: 0 } + } + + pub fn as_str(&self) -> &str { + let slice = &self.bytes[..self.offset]; + unsafe { str::from_utf8_unchecked(slice) } + } +} + +impl<'a> Write for Buf<'a> { + fn write_str(&mut self, s: &str) -> fmt::Result { + if self.offset + s.len() > self.bytes.len() { + Err(fmt::Error) + } else { + self.bytes[self.offset..self.offset + s.len()].copy_from_slice(s.as_bytes()); + self.offset += s.len(); + Ok(()) + } + } +} |