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Don't panic. (#96)

This commit is contained in:
Lena Hellström 2017-01-31 13:21:07 -06:00 committed by Ty Overby
parent ecb51cb8bd
commit ab3f627ca8
1 changed files with 5 additions and 4 deletions
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9
src/serde/writer.rs
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@ -5,6 +5,7 @@ use std::io::Write;
use std::u32;
use serde_crate as serde;
use serde_crate::ser::Error as SeError;
use byteorder::{BigEndian, WriteBytesExt};
@ -172,7 +173,7 @@ impl<'a, W: Write> serde::Serializer for &'a mut Serializer<W> {
}
fn serialize_seq(self, len: Option<usize>) -> SerializeResult<Self::SerializeSeq> {
let len = len.expect("do not know how to serialize a sequence with no length");
let len = try!(len.ok_or(SerializeError::custom("do not know how to serialize a sequence with no length")));
try!(self.serialize_u64(len as u64));
Ok(Compound {ser: self})
}
@ -200,7 +201,7 @@ impl<'a, W: Write> serde::Serializer for &'a mut Serializer<W> {
}
fn serialize_map(self, len: Option<usize>) -> SerializeResult<Self::SerializeMap> {
let len = len.expect("do not know how to serialize a map with no length");
let len = try!(len.ok_or(SerializeError::custom("do not know how to serialize a map with no length")));
try!(self.serialize_u64(len as u64));
Ok(Compound {ser: self})
}
@ -367,7 +368,7 @@ impl<'a> serde::Serializer for &'a mut SizeChecker {
}
fn serialize_seq(self, len: Option<usize>) -> SerializeResult<Self::SerializeSeq> {
let len = len.expect("do not know how to serialize a sequence with no length");
let len = try!(len.ok_or(SerializeError::custom("do not know how to serialize a sequence with no length")));
try!(self.serialize_u64(len as u64));
Ok(SizeCompound {ser: self})
@ -397,7 +398,7 @@ impl<'a> serde::Serializer for &'a mut SizeChecker {
fn serialize_map(self, len: Option<usize>) -> SerializeResult<Self::SerializeMap>
{
let len = len.expect("do not know how to serialize a map with no length");
let len = try!(len.ok_or(SerializeError::custom("do not know how to serialize a map with no length")));
try!(self.serialize_u64(len as u64));
Ok(SizeCompound {ser: self})