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Limit when we emit a trailing where clause comma.

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This commit is contained in:
Jeremy Wazny 2016-01-26 15:53:04 +11:00
parent d82d3b2cd1
commit 7297bc320f
1 changed files with 8 additions and 1 deletions
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9
src/items.rs
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@ -491,6 +491,7 @@ pub fn format_impl(context: &RewriteContext, item: &ast::Item, offset: Indent) -
where_budget,
context.config.where_density,
"{",
true,
None));
if try_opt!(is_impl_single_line(context, &items, &result, &where_clause_str, &item)) {
@ -737,6 +738,7 @@ fn format_tuple_struct(context: &RewriteContext,
where_budget,
Density::Compressed,
";",
false,
None))
}
None => "".to_owned(),
@ -818,6 +820,7 @@ pub fn rewrite_type_alias(context: &RewriteContext,
where_budget,
context.config.where_density,
"=",
false,
Some(span.hi)));
result.push_str(&where_clause_str);
result.push_str(" = ");
@ -1248,6 +1251,7 @@ fn rewrite_fn_base(context: &RewriteContext,
where_budget,
where_density,
"{",
has_body,
Some(span.hi)));
if last_line_width(&result) + where_clause_str.len() > context.config.max_width &&
@ -1487,6 +1491,7 @@ fn rewrite_where_clause(context: &RewriteContext,
width: usize,
density: Density,
terminator: &str,
allow_trailing_comma: bool,
span_end: Option<BytePos>)
-> Option<String> {
if where_clause.predicates.is_empty() {
@ -1526,11 +1531,12 @@ fn rewrite_where_clause(context: &RewriteContext,
// FIXME: we don't need to collect here if the where_layout isn't
// HorizontalVertical.
let tactic = definitive_tactic(&item_vec, context.config.where_layout, budget);
let use_trailing_comma = allow_trailing_comma && context.config.where_trailing_comma;
let fmt = ListFormatting {
tactic: tactic,
separator: ",",
trailing_separator: SeparatorTactic::from_bool(context.config.where_trailing_comma),
trailing_separator: SeparatorTactic::from_bool(use_trailing_comma),
indent: offset,
width: budget,
ends_with_newline: true,
@ -1592,6 +1598,7 @@ fn format_generics(context: &RewriteContext,
budget,
Density::Tall,
terminator,
true,
Some(span.hi)));
result.push_str(&where_clause_str);
if !force_same_line_brace &&