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-rw-r--r--vendor/serde/src/de/format.rs30
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(())
+ }
+ }
+}