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std: add some better failure msgs to json

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This commit is contained in:
Erick Tryzelaar 2013-03-26 23:15:14 -07:00
parent 83e831bc22
commit c317d3f6fa
1 changed files with 3 additions and 3 deletions
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6
src/libstd/json.rs
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@ -827,7 +827,7 @@ impl<'self> serialize::Decoder for Decoder<'self> {
debug!("read_owned_str");
match *self.pop() {
String(ref s) => copy *s,
_ => fail!(~"not a string")
ref json => fail!(fmt!("not a string: %?", *json))
}
}
@ -835,7 +835,7 @@ impl<'self> serialize::Decoder for Decoder<'self> {
debug!("read_managed_str");
match *self.pop() {
String(ref s) => s.to_managed(),
_ => fail!(~"not a string")
ref json => fail!(fmt!("not a string: %?", *json))
}
}
@ -872,7 +872,7 @@ impl<'self> serialize::Decoder for Decoder<'self> {
let name = match *self.peek() {
String(ref s) => s,
List([String(ref s), .. _]) => s,
json => fail!(fmt!("invalid variant: %?", json)),
ref json => fail!(fmt!("invalid variant: %?", *json)),
};
let idx = match vec::position(names, |n| str::eq_slice(*n, *name)) {
Some(idx) => idx,