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Merge pull request #146 from marcusklaas/fix-inverted-span

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Format unnamed function arguments
This commit is contained in:
Nick Cameron 2015-07-21 07:38:20 +12:00
commit 8e8a5b3990
2 changed files with 29 additions and 5 deletions
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30
src/items.rs
View File

@ -289,10 +289,10 @@ impl<'a> FmtVisitor<'a> {
arg_items = itemize_list(self.codemap,
arg_items,
args[min_args-1..].iter(),
args[min_args-1..].iter().cloned(),
",",
")",
|arg| arg.pat.span.lo,
span_lo_for_arg,
|arg| arg.ty.span.hi,
|_| String::new(),
comment_span_start,
@ -780,9 +780,29 @@ impl<'a> FmtVisitor<'a> {
// TODO we farm this out, but this could spill over the column limit, so we
// ought to handle it properly.
fn rewrite_fn_input(&self, arg: &ast::Arg) -> String {
format!("{}: {}",
pprust::pat_to_string(&arg.pat),
pprust::ty_to_string(&arg.ty))
if is_named_arg(arg) {
format!("{}: {}",
pprust::pat_to_string(&arg.pat),
pprust::ty_to_string(&arg.ty))
} else {
pprust::ty_to_string(&arg.ty)
}
}
}
fn span_lo_for_arg(arg: &ast::Arg) -> BytePos {
if is_named_arg(arg) {
arg.pat.span.lo
} else {
arg.ty.span.lo
}
}
fn is_named_arg(arg: &ast::Arg) -> bool {
if let ast::Pat_::PatIdent(_, ident, _) = arg.pat.node {
ident.node != token::special_idents::invalid
} else {
true
}
}

4
tests/target/trait.rs
View File

@ -18,3 +18,7 @@ trait Foo {
fn read(&mut self, x: BufReader<R> /* Used to be MemReader */)
where R: Read;
}
pub trait WriteMessage {
fn write_message(&mut self, &FrontendMessage) -> io::Result<()>;
}