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Mass rename if_ok! to try!

This "bubble up an error" macro was originally named if_ok! in order to get it
landed, but after the fact it was discovered that this name is not exactly
desirable.

The name `if_ok!` isn't immediately clear that is has much to do with error
handling, and it doesn't look fantastic in all contexts (if if_ok!(...) {}). In
general, the agreed opinion about `if_ok!` is that is came in as subpar.

The name `try!` is more invocative of error handling, it's shorter by 2 letters,
and it looks fitting in almost all circumstances. One concern about the word
`try!` is that it's too invocative of exceptions, but the belief is that this
will be overcome with documentation and examples.

Close #12037
This commit is contained in:
Alex Crichton 2014-02-19 10:07:49 -08:00
parent 06e1281198
commit 7bb498bd7a
32 changed files with 1222 additions and 1226 deletions

View file

@ -29,7 +29,7 @@ impl<'a> fmt::Show for Escape<'a> {
for (i, ch) in s.bytes().enumerate() {
match ch as char {
'<' | '>' | '&' | '\'' | '"' => {
if_ok!(fmt.buf.write(pile_o_bits.slice(last, i).as_bytes()));
try!(fmt.buf.write(pile_o_bits.slice(last, i).as_bytes()));
let s = match ch as char {
'>' => "&gt;",
'<' => "&lt;",
@ -38,7 +38,7 @@ impl<'a> fmt::Show for Escape<'a> {
'"' => "&quot;",
_ => unreachable!()
};
if_ok!(fmt.buf.write(s.as_bytes()));
try!(fmt.buf.write(s.as_bytes()));
last = i + 1;
}
_ => {}
@ -46,7 +46,7 @@ impl<'a> fmt::Show for Escape<'a> {
}
if last < s.len() {
if_ok!(fmt.buf.write(pile_o_bits.slice_from(last).as_bytes()));
try!(fmt.buf.write(pile_o_bits.slice_from(last).as_bytes()));
}
Ok(())
}